driver_nl80211.c revision 80da0428ce21beb670d31bd06d025d8609d658b4
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#ifndef ANDROID_P2P 2570 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2571#endif 2572 info->device_ap_sme = 1; 2573 2574 if (tb[NL80211_ATTR_FEATURE_FLAGS]) { 2575 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]); 2576 2577 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2578 info->data_tx_status = 1; 2579 2580 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 2581 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 2582 } 2583 2584 if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) { 2585 int protocols = 2586 nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2587 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response " 2588 "offload in AP mode"); 2589 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2590 capa->probe_resp_offloads = 2591 probe_resp_offload_support(protocols); 2592 } 2593 2594 return NL_SKIP; 2595} 2596 2597 2598static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2599 struct wiphy_info_data *info) 2600{ 2601 struct nl_msg *msg; 2602 2603 os_memset(info, 0, sizeof(*info)); 2604 info->capa = &drv->capa; 2605 2606 msg = nlmsg_alloc(); 2607 if (!msg) 2608 return -1; 2609 2610 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2611 2612 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2613 2614 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0) 2615 return 0; 2616 msg = NULL; 2617nla_put_failure: 2618 nlmsg_free(msg); 2619 return -1; 2620} 2621 2622 2623static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2624{ 2625 struct wiphy_info_data info; 2626 if (wpa_driver_nl80211_get_info(drv, &info)) 2627 return -1; 2628 2629 if (info.error) 2630 return -1; 2631 2632 drv->has_capability = 1; 2633 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2634 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2635 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2636 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2637 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2638 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2639 WPA_DRIVER_CAPA_ENC_WEP104 | 2640 WPA_DRIVER_CAPA_ENC_TKIP | 2641 WPA_DRIVER_CAPA_ENC_CCMP; 2642 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2643 WPA_DRIVER_AUTH_SHARED | 2644 WPA_DRIVER_AUTH_LEAP; 2645 2646 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2647 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2648 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2649#ifndef ANDROID_P2P 2650 if (!info.device_ap_sme) 2651#endif 2652 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2653 2654 drv->device_ap_sme = info.device_ap_sme; 2655 drv->poll_command_supported = info.poll_command_supported; 2656 drv->data_tx_status = info.data_tx_status; 2657 2658#ifdef ANDROID_P2P 2659 if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { 2660 /* Driver is new enough to support monitorless mode*/ 2661 wpa_printf(MSG_DEBUG, "nl80211: Driver is new " 2662 "enough to support monitor-less mode"); 2663 drv->use_monitor = 0; 2664 } 2665#else 2666 /* 2667 * If poll command is supported mac80211 is new enough to 2668 * have everything we need to not need monitor interfaces. 2669 */ 2670 drv->use_monitor = !info.poll_command_supported; 2671#endif 2672 2673 if (drv->device_ap_sme && drv->use_monitor) { 2674 /* 2675 * Non-mac80211 drivers may not support monitor interface. 2676 * Make sure we do not get stuck with incorrect capability here 2677 * by explicitly testing this. 2678 */ 2679 if (!info.monitor_supported) { 2680 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 2681 "with device_ap_sme since no monitor mode " 2682 "support detected"); 2683 drv->use_monitor = 0; 2684 } 2685 } 2686 2687 /* 2688 * If we aren't going to use monitor interfaces, but the 2689 * driver doesn't support data TX status, we won't get TX 2690 * status for EAPOL frames. 2691 */ 2692 if (!drv->use_monitor && !info.data_tx_status) 2693 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2694 2695 return 0; 2696} 2697 2698 2699#ifdef ANDROID 2700static int android_genl_ctrl_resolve(struct nl_handle *handle, 2701 const char *name) 2702{ 2703 /* 2704 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 2705 * need to work around that. 2706 */ 2707 struct nl_cache *cache = NULL; 2708 struct genl_family *nl80211 = NULL; 2709 int id = -1; 2710 2711 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 2712 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 2713 "netlink cache"); 2714 goto fail; 2715 } 2716 2717 nl80211 = genl_ctrl_search_by_name(cache, name); 2718 if (nl80211 == NULL) 2719 goto fail; 2720 2721 id = genl_family_get_id(nl80211); 2722 2723fail: 2724 if (nl80211) 2725 genl_family_put(nl80211); 2726 if (cache) 2727 nl_cache_free(cache); 2728 2729 return id; 2730} 2731#define genl_ctrl_resolve android_genl_ctrl_resolve 2732#endif /* ANDROID */ 2733 2734 2735static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 2736{ 2737 int ret; 2738 2739 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2740 if (global->nl_cb == NULL) { 2741 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 2742 "callbacks"); 2743 return -1; 2744 } 2745 2746 global->nl = nl_create_handle(global->nl_cb, "nl"); 2747 if (global->nl == NULL) 2748 goto err; 2749 2750 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 2751 if (global->nl80211_id < 0) { 2752 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 2753 "found"); 2754 goto err; 2755 } 2756 2757 global->nl_event = nl_create_handle(global->nl_cb, "event"); 2758 if (global->nl_event == NULL) 2759 goto err; 2760 2761 ret = nl_get_multicast_id(global, "nl80211", "scan"); 2762 if (ret >= 0) 2763 ret = nl_socket_add_membership(global->nl_event, ret); 2764 if (ret < 0) { 2765 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2766 "membership for scan events: %d (%s)", 2767 ret, strerror(-ret)); 2768 goto err; 2769 } 2770 2771 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 2772 if (ret >= 0) 2773 ret = nl_socket_add_membership(global->nl_event, ret); 2774 if (ret < 0) { 2775 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2776 "membership for mlme events: %d (%s)", 2777 ret, strerror(-ret)); 2778 goto err; 2779 } 2780 2781 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 2782 if (ret >= 0) 2783 ret = nl_socket_add_membership(global->nl_event, ret); 2784 if (ret < 0) { 2785 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 2786 "membership for regulatory events: %d (%s)", 2787 ret, strerror(-ret)); 2788 /* Continue without regulatory events */ 2789 } 2790 2791 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2792 no_seq_check, NULL); 2793 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2794 process_global_event, global); 2795 2796 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 2797 wpa_driver_nl80211_event_receive, 2798 global->nl_cb, global->nl_event); 2799 2800 return 0; 2801 2802err: 2803 nl_destroy_handles(&global->nl_event); 2804 nl_destroy_handles(&global->nl); 2805 nl_cb_put(global->nl_cb); 2806 global->nl_cb = NULL; 2807 return -1; 2808} 2809 2810 2811static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 2812{ 2813 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2814 if (!drv->nl_cb) { 2815 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 2816 return -1; 2817 } 2818 2819 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2820 no_seq_check, NULL); 2821 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2822 process_drv_event, drv); 2823 2824 return 0; 2825} 2826 2827 2828static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 2829{ 2830 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 2831 /* 2832 * This may be for any interface; use ifdown event to disable 2833 * interface. 2834 */ 2835} 2836 2837 2838static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 2839{ 2840 struct wpa_driver_nl80211_data *drv = ctx; 2841 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 2842 if (linux_set_iface_flags(drv->global->ioctl_sock, 2843 drv->first_bss.ifname, 1)) { 2844 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 2845 "after rfkill unblock"); 2846 return; 2847 } 2848 /* rtnetlink ifup handler will report interface as enabled */ 2849} 2850 2851 2852static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 2853{ 2854 /* Find phy (radio) to which this interface belongs */ 2855 char buf[90], *pos; 2856 int f, rv; 2857 2858 drv->phyname[0] = '\0'; 2859 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 2860 drv->first_bss.ifname); 2861 f = open(buf, O_RDONLY); 2862 if (f < 0) { 2863 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 2864 buf, strerror(errno)); 2865 return; 2866 } 2867 2868 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 2869 close(f); 2870 if (rv < 0) { 2871 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 2872 buf, strerror(errno)); 2873 return; 2874 } 2875 2876 drv->phyname[rv] = '\0'; 2877 pos = os_strchr(drv->phyname, '\n'); 2878 if (pos) 2879 *pos = '\0'; 2880 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 2881 drv->first_bss.ifname, drv->phyname); 2882} 2883 2884 2885static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 2886 void *eloop_ctx, 2887 void *handle) 2888{ 2889 struct wpa_driver_nl80211_data *drv = eloop_ctx; 2890 u8 data[2048]; 2891 struct msghdr msg; 2892 struct iovec entry; 2893 u8 control[512]; 2894 struct cmsghdr *cmsg; 2895 int res, found_ee = 0, found_wifi = 0, acked = 0; 2896 union wpa_event_data event; 2897 2898 memset(&msg, 0, sizeof(msg)); 2899 msg.msg_iov = &entry; 2900 msg.msg_iovlen = 1; 2901 entry.iov_base = data; 2902 entry.iov_len = sizeof(data); 2903 msg.msg_control = &control; 2904 msg.msg_controllen = sizeof(control); 2905 2906 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 2907 /* if error or not fitting 802.3 header, return */ 2908 if (res < 14) 2909 return; 2910 2911 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 2912 { 2913 if (cmsg->cmsg_level == SOL_SOCKET && 2914 cmsg->cmsg_type == SCM_WIFI_STATUS) { 2915 int *ack; 2916 2917 found_wifi = 1; 2918 ack = (void *)CMSG_DATA(cmsg); 2919 acked = *ack; 2920 } 2921 2922 if (cmsg->cmsg_level == SOL_PACKET && 2923 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 2924 struct sock_extended_err *err = 2925 (struct sock_extended_err *)CMSG_DATA(cmsg); 2926 2927 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 2928 found_ee = 1; 2929 } 2930 } 2931 2932 if (!found_ee || !found_wifi) 2933 return; 2934 2935 memset(&event, 0, sizeof(event)); 2936 event.eapol_tx_status.dst = data; 2937 event.eapol_tx_status.data = data + 14; 2938 event.eapol_tx_status.data_len = res - 14; 2939 event.eapol_tx_status.ack = acked; 2940 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 2941} 2942 2943 2944static int nl80211_init_bss(struct i802_bss *bss) 2945{ 2946 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2947 if (!bss->nl_cb) 2948 return -1; 2949 2950 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2951 no_seq_check, NULL); 2952 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2953 process_bss_event, bss); 2954 2955 return 0; 2956} 2957 2958 2959static void nl80211_destroy_bss(struct i802_bss *bss) 2960{ 2961 nl_cb_put(bss->nl_cb); 2962 bss->nl_cb = NULL; 2963} 2964 2965 2966/** 2967 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 2968 * @ctx: context to be used when calling wpa_supplicant functions, 2969 * e.g., wpa_supplicant_event() 2970 * @ifname: interface name, e.g., wlan0 2971 * @global_priv: private driver global data from global_init() 2972 * Returns: Pointer to private data, %NULL on failure 2973 */ 2974static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 2975 void *global_priv) 2976{ 2977 struct wpa_driver_nl80211_data *drv; 2978 struct rfkill_config *rcfg; 2979 struct i802_bss *bss; 2980 2981 if (global_priv == NULL) 2982 return NULL; 2983 drv = os_zalloc(sizeof(*drv)); 2984 if (drv == NULL) 2985 return NULL; 2986 drv->global = global_priv; 2987 drv->ctx = ctx; 2988 bss = &drv->first_bss; 2989 bss->drv = drv; 2990 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 2991 drv->monitor_ifidx = -1; 2992 drv->monitor_sock = -1; 2993 drv->eapol_tx_sock = -1; 2994 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2995 2996 if (wpa_driver_nl80211_init_nl(drv)) { 2997 os_free(drv); 2998 return NULL; 2999 } 3000 3001 if (nl80211_init_bss(bss)) 3002 goto failed; 3003 3004 nl80211_get_phy_name(drv); 3005 3006 rcfg = os_zalloc(sizeof(*rcfg)); 3007 if (rcfg == NULL) 3008 goto failed; 3009 rcfg->ctx = drv; 3010 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3011 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3012 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3013 drv->rfkill = rfkill_init(rcfg); 3014 if (drv->rfkill == NULL) { 3015 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3016 os_free(rcfg); 3017 } 3018 3019 if (wpa_driver_nl80211_finish_drv_init(drv)) 3020 goto failed; 3021 3022 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3023 if (drv->eapol_tx_sock < 0) 3024 goto failed; 3025 3026 if (drv->data_tx_status) { 3027 int enabled = 1; 3028 3029 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3030 &enabled, sizeof(enabled)) < 0) { 3031 wpa_printf(MSG_DEBUG, 3032 "nl80211: wifi status sockopt failed\n"); 3033 drv->data_tx_status = 0; 3034 if (!drv->use_monitor) 3035 drv->capa.flags &= 3036 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3037 } else { 3038 eloop_register_read_sock(drv->eapol_tx_sock, 3039 wpa_driver_nl80211_handle_eapol_tx_status, 3040 drv, NULL); 3041 } 3042 } 3043 3044 if (drv->global) { 3045 dl_list_add(&drv->global->interfaces, &drv->list); 3046 drv->in_interface_list = 1; 3047 } 3048 3049 return bss; 3050 3051failed: 3052 wpa_driver_nl80211_deinit(bss); 3053 return NULL; 3054} 3055 3056 3057static int nl80211_register_frame(struct i802_bss *bss, 3058 struct nl_handle *nl_handle, 3059 u16 type, const u8 *match, size_t match_len) 3060{ 3061 struct wpa_driver_nl80211_data *drv = bss->drv; 3062 struct nl_msg *msg; 3063 int ret = -1; 3064 3065 msg = nlmsg_alloc(); 3066 if (!msg) 3067 return -1; 3068 3069 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3070 type, nl_handle); 3071 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3072 match, match_len); 3073 3074 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3075 3076 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3077 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3078 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3079 3080 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3081 msg = NULL; 3082 if (ret) { 3083 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3084 "failed (type=%u): ret=%d (%s)", 3085 type, ret, strerror(-ret)); 3086 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3087 match, match_len); 3088 goto nla_put_failure; 3089 } 3090 ret = 0; 3091nla_put_failure: 3092 nlmsg_free(msg); 3093 return ret; 3094} 3095 3096 3097static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3098{ 3099 struct wpa_driver_nl80211_data *drv = bss->drv; 3100 3101 if (bss->nl_mgmt) { 3102 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3103 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3104 return -1; 3105 } 3106 3107 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3108 if (bss->nl_mgmt == NULL) 3109 return -1; 3110 3111 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3112 wpa_driver_nl80211_event_receive, bss->nl_cb, 3113 bss->nl_mgmt); 3114 3115 return 0; 3116} 3117 3118 3119static int nl80211_register_action_frame(struct i802_bss *bss, 3120 const u8 *match, size_t match_len) 3121{ 3122 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3123 return nl80211_register_frame(bss, bss->nl_mgmt, 3124 type, match, match_len); 3125} 3126 3127 3128static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3129{ 3130 struct wpa_driver_nl80211_data *drv = bss->drv; 3131 3132 if (nl80211_alloc_mgmt_handle(bss)) 3133 return -1; 3134 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3135 "handle %p", bss->nl_mgmt); 3136 3137#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3138 /* GAS Initial Request */ 3139 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3140 return -1; 3141 /* GAS Initial Response */ 3142 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3143 return -1; 3144 /* GAS Comeback Request */ 3145 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3146 return -1; 3147 /* GAS Comeback Response */ 3148 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3149 return -1; 3150#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3151#ifdef CONFIG_P2P 3152 /* P2P Public Action */ 3153 if (nl80211_register_action_frame(bss, 3154 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3155 6) < 0) 3156 return -1; 3157 /* P2P Action */ 3158 if (nl80211_register_action_frame(bss, 3159 (u8 *) "\x7f\x50\x6f\x9a\x09", 3160 5) < 0) 3161 return -1; 3162#endif /* CONFIG_P2P */ 3163#ifdef CONFIG_IEEE80211W 3164 /* SA Query Response */ 3165 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3166 return -1; 3167#endif /* CONFIG_IEEE80211W */ 3168#ifdef CONFIG_TDLS 3169 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3170 /* TDLS Discovery Response */ 3171 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3172 0) 3173 return -1; 3174 } 3175#endif /* CONFIG_TDLS */ 3176 3177 /* FT Action frames */ 3178 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3179 return -1; 3180 else 3181 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3182 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3183 3184 /* WNM - BSS Transition Management Request */ 3185 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3186 return -1; 3187 3188 return 0; 3189} 3190 3191 3192static int nl80211_register_spurious_class3(struct i802_bss *bss) 3193{ 3194 struct wpa_driver_nl80211_data *drv = bss->drv; 3195 struct nl_msg *msg; 3196 int ret = -1; 3197 3198 msg = nlmsg_alloc(); 3199 if (!msg) 3200 return -1; 3201 3202 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3203 3204 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3205 3206 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3207 msg = NULL; 3208 if (ret) { 3209 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3210 "failed: ret=%d (%s)", 3211 ret, strerror(-ret)); 3212 goto nla_put_failure; 3213 } 3214 ret = 0; 3215nla_put_failure: 3216 nlmsg_free(msg); 3217 return ret; 3218} 3219 3220 3221static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3222{ 3223 static const int stypes[] = { 3224 WLAN_FC_STYPE_AUTH, 3225 WLAN_FC_STYPE_ASSOC_REQ, 3226 WLAN_FC_STYPE_REASSOC_REQ, 3227 WLAN_FC_STYPE_DISASSOC, 3228 WLAN_FC_STYPE_DEAUTH, 3229 WLAN_FC_STYPE_ACTION, 3230 WLAN_FC_STYPE_PROBE_REQ, 3231/* Beacon doesn't work as mac80211 doesn't currently allow 3232 * it, but it wouldn't really be the right thing anyway as 3233 * it isn't per interface ... maybe just dump the scan 3234 * results periodically for OLBC? 3235 */ 3236// WLAN_FC_STYPE_BEACON, 3237 }; 3238 unsigned int i; 3239 3240 if (nl80211_alloc_mgmt_handle(bss)) 3241 return -1; 3242 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3243 "handle %p", bss->nl_mgmt); 3244 3245 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3246 if (nl80211_register_frame(bss, bss->nl_mgmt, 3247 (WLAN_FC_TYPE_MGMT << 2) | 3248 (stypes[i] << 4), 3249 NULL, 0) < 0) { 3250 goto out_err; 3251 } 3252 } 3253 3254 if (nl80211_register_spurious_class3(bss)) 3255 goto out_err; 3256 3257 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3258 goto out_err; 3259 3260 return 0; 3261 3262out_err: 3263 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3264 nl_destroy_handles(&bss->nl_mgmt); 3265 return -1; 3266} 3267 3268 3269static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3270{ 3271 if (nl80211_alloc_mgmt_handle(bss)) 3272 return -1; 3273 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3274 "handle %p (device SME)", bss->nl_mgmt); 3275 3276 if (nl80211_register_frame(bss, bss->nl_mgmt, 3277 (WLAN_FC_TYPE_MGMT << 2) | 3278 (WLAN_FC_STYPE_ACTION << 4), 3279 NULL, 0) < 0) 3280 goto out_err; 3281 3282 return 0; 3283 3284out_err: 3285 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3286 nl_destroy_handles(&bss->nl_mgmt); 3287 return -1; 3288} 3289 3290 3291static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3292{ 3293 if (bss->nl_mgmt == NULL) 3294 return; 3295 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3296 "(%s)", bss->nl_mgmt, reason); 3297 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3298 nl_destroy_handles(&bss->nl_mgmt); 3299 3300 nl80211_put_wiphy_data_ap(bss); 3301} 3302 3303 3304static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3305{ 3306 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3307} 3308 3309 3310static int 3311wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3312{ 3313 struct i802_bss *bss = &drv->first_bss; 3314 int send_rfkill_event = 0; 3315 3316 drv->ifindex = if_nametoindex(bss->ifname); 3317 drv->first_bss.ifindex = drv->ifindex; 3318 3319#ifndef HOSTAPD 3320 /* 3321 * Make sure the interface starts up in station mode unless this is a 3322 * dynamically added interface (e.g., P2P) that was already configured 3323 * with proper iftype. 3324 */ 3325 if (drv->ifindex != drv->global->if_add_ifindex && 3326 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3327 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3328 "use managed mode"); 3329 return -1; 3330 } 3331 3332 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3333 if (rfkill_is_blocked(drv->rfkill)) { 3334 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3335 "interface '%s' due to rfkill", 3336 bss->ifname); 3337 drv->if_disabled = 1; 3338 send_rfkill_event = 1; 3339 } else { 3340 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3341 "interface '%s' UP", bss->ifname); 3342 return -1; 3343 } 3344 } 3345 3346 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3347 1, IF_OPER_DORMANT); 3348#endif /* HOSTAPD */ 3349 3350 if (wpa_driver_nl80211_capa(drv)) 3351 return -1; 3352 3353 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3354 bss->addr)) 3355 return -1; 3356 3357 if (send_rfkill_event) { 3358 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3359 drv, drv->ctx); 3360 } 3361 3362 return 0; 3363} 3364 3365 3366static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3367{ 3368 struct nl_msg *msg; 3369 3370 msg = nlmsg_alloc(); 3371 if (!msg) 3372 return -ENOMEM; 3373 3374 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3375 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3376 3377 return send_and_recv_msgs(drv, msg, NULL, NULL); 3378 nla_put_failure: 3379 nlmsg_free(msg); 3380 return -ENOBUFS; 3381} 3382 3383 3384/** 3385 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3386 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3387 * 3388 * Shut down driver interface and processing of driver events. Free 3389 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3390 */ 3391static void wpa_driver_nl80211_deinit(void *priv) 3392{ 3393 struct i802_bss *bss = priv; 3394 struct wpa_driver_nl80211_data *drv = bss->drv; 3395 3396 bss->in_deinit = 1; 3397 if (drv->data_tx_status) 3398 eloop_unregister_read_sock(drv->eapol_tx_sock); 3399 if (drv->eapol_tx_sock >= 0) 3400 close(drv->eapol_tx_sock); 3401 3402 if (bss->nl_preq) 3403 wpa_driver_nl80211_probe_req_report(bss, 0); 3404 if (bss->added_if_into_bridge) { 3405 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3406 bss->ifname) < 0) 3407 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3408 "interface %s from bridge %s: %s", 3409 bss->ifname, bss->brname, strerror(errno)); 3410 } 3411 if (bss->added_bridge) { 3412 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3413 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3414 "bridge %s: %s", 3415 bss->brname, strerror(errno)); 3416 } 3417 3418 nl80211_remove_monitor_interface(drv); 3419 3420 if (is_ap_interface(drv->nlmode)) 3421 wpa_driver_nl80211_del_beacon(drv); 3422 3423#ifdef HOSTAPD 3424 if (drv->last_freq_ht) { 3425 /* Clear HT flags from the driver */ 3426 struct hostapd_freq_params freq; 3427 os_memset(&freq, 0, sizeof(freq)); 3428 freq.freq = drv->last_freq; 3429 i802_set_freq(priv, &freq); 3430 } 3431 3432 if (drv->eapol_sock >= 0) { 3433 eloop_unregister_read_sock(drv->eapol_sock); 3434 close(drv->eapol_sock); 3435 } 3436 3437 if (drv->if_indices != drv->default_if_indices) 3438 os_free(drv->if_indices); 3439#endif /* HOSTAPD */ 3440 3441 if (drv->disabled_11b_rates) 3442 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3443 3444 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3445 IF_OPER_UP); 3446 rfkill_deinit(drv->rfkill); 3447 3448 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3449 3450 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3451 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3452 nl80211_mgmt_unsubscribe(bss, "deinit"); 3453 3454 nl_cb_put(drv->nl_cb); 3455 3456 nl80211_destroy_bss(&drv->first_bss); 3457 3458 os_free(drv->filter_ssids); 3459 3460 os_free(drv->auth_ie); 3461 3462 if (drv->in_interface_list) 3463 dl_list_del(&drv->list); 3464 3465 os_free(drv); 3466} 3467 3468 3469/** 3470 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3471 * @eloop_ctx: Driver private data 3472 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3473 * 3474 * This function can be used as registered timeout when starting a scan to 3475 * generate a scan completed event if the driver does not report this. 3476 */ 3477static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3478{ 3479 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3480 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3481 wpa_driver_nl80211_set_mode(&drv->first_bss, 3482 drv->ap_scan_as_station); 3483 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3484 } 3485 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3486 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3487} 3488 3489 3490/** 3491 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3492 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3493 * @params: Scan parameters 3494 * Returns: 0 on success, -1 on failure 3495 */ 3496static int wpa_driver_nl80211_scan(void *priv, 3497 struct wpa_driver_scan_params *params) 3498{ 3499 struct i802_bss *bss = priv; 3500 struct wpa_driver_nl80211_data *drv = bss->drv; 3501 int ret = 0, timeout; 3502 struct nl_msg *msg, *ssids, *freqs, *rates; 3503 size_t i; 3504 3505 drv->scan_for_auth = 0; 3506 3507 msg = nlmsg_alloc(); 3508 ssids = nlmsg_alloc(); 3509 freqs = nlmsg_alloc(); 3510 rates = nlmsg_alloc(); 3511 if (!msg || !ssids || !freqs || !rates) { 3512 nlmsg_free(msg); 3513 nlmsg_free(ssids); 3514 nlmsg_free(freqs); 3515 nlmsg_free(rates); 3516 return -1; 3517 } 3518 3519 os_free(drv->filter_ssids); 3520 drv->filter_ssids = params->filter_ssids; 3521 params->filter_ssids = NULL; 3522 drv->num_filter_ssids = params->num_filter_ssids; 3523 3524 nl80211_cmd(drv, msg, 0, NL80211_CMD_TRIGGER_SCAN); 3525 3526 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3527 3528 for (i = 0; i < params->num_ssids; i++) { 3529 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3530 params->ssids[i].ssid, 3531 params->ssids[i].ssid_len); 3532 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len, 3533 params->ssids[i].ssid); 3534 } 3535 if (params->num_ssids) 3536 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3537 3538 if (params->extra_ies) { 3539 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3540 params->extra_ies, params->extra_ies_len); 3541 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len, 3542 params->extra_ies); 3543 } 3544 3545 if (params->freqs) { 3546 for (i = 0; params->freqs[i]; i++) { 3547 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3548 "MHz", params->freqs[i]); 3549 NLA_PUT_U32(freqs, i + 1, params->freqs[i]); 3550 } 3551 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); 3552 } 3553 3554 if (params->p2p_probe) { 3555 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 3556 3557 /* 3558 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3559 * by masking out everything else apart from the OFDM rates 6, 3560 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3561 * rates are left enabled. 3562 */ 3563 NLA_PUT(rates, NL80211_BAND_2GHZ, 8, 3564 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3565 nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates); 3566 3567 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3568 } 3569 3570 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3571 msg = NULL; 3572 if (ret) { 3573 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3574 "(%s)", ret, strerror(-ret)); 3575#ifdef HOSTAPD 3576 if (is_ap_interface(drv->nlmode)) { 3577 /* 3578 * mac80211 does not allow scan requests in AP mode, so 3579 * try to do this in station mode. 3580 */ 3581 if (wpa_driver_nl80211_set_mode( 3582 bss, NL80211_IFTYPE_STATION)) 3583 goto nla_put_failure; 3584 3585 if (wpa_driver_nl80211_scan(drv, params)) { 3586 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3587 goto nla_put_failure; 3588 } 3589 3590 /* Restore AP mode when processing scan results */ 3591 drv->ap_scan_as_station = drv->nlmode; 3592 ret = 0; 3593 } else 3594 goto nla_put_failure; 3595#else /* HOSTAPD */ 3596 goto nla_put_failure; 3597#endif /* HOSTAPD */ 3598 } 3599 3600 /* Not all drivers generate "scan completed" wireless event, so try to 3601 * read results after a timeout. */ 3602 timeout = 10; 3603 if (drv->scan_complete_events) { 3604 /* 3605 * The driver seems to deliver events to notify when scan is 3606 * complete, so use longer timeout to avoid race conditions 3607 * with scanning and following association request. 3608 */ 3609 timeout = 30; 3610 } 3611 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3612 "seconds", ret, timeout); 3613 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3614 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3615 drv, drv->ctx); 3616 3617nla_put_failure: 3618 nlmsg_free(ssids); 3619 nlmsg_free(msg); 3620 nlmsg_free(freqs); 3621 nlmsg_free(rates); 3622 return ret; 3623} 3624 3625 3626/** 3627 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3628 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3629 * @params: Scan parameters 3630 * @interval: Interval between scan cycles in milliseconds 3631 * Returns: 0 on success, -1 on failure or if not supported 3632 */ 3633static int wpa_driver_nl80211_sched_scan(void *priv, 3634 struct wpa_driver_scan_params *params, 3635 u32 interval) 3636{ 3637 struct i802_bss *bss = priv; 3638 struct wpa_driver_nl80211_data *drv = bss->drv; 3639 int ret = 0; 3640 struct nl_msg *msg, *ssids, *freqs, *match_set_ssid, *match_sets; 3641 size_t i; 3642 3643#ifdef ANDROID 3644 if (!drv->capa.sched_scan_supported) 3645 return android_pno_start(bss, params); 3646#endif /* ANDROID */ 3647 3648 msg = nlmsg_alloc(); 3649 ssids = nlmsg_alloc(); 3650 freqs = nlmsg_alloc(); 3651 if (!msg || !ssids || !freqs) { 3652 nlmsg_free(msg); 3653 nlmsg_free(ssids); 3654 nlmsg_free(freqs); 3655 return -1; 3656 } 3657 3658 os_free(drv->filter_ssids); 3659 drv->filter_ssids = params->filter_ssids; 3660 params->filter_ssids = NULL; 3661 drv->num_filter_ssids = params->num_filter_ssids; 3662 3663 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_SCHED_SCAN); 3664 3665 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3666 3667 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 3668 3669 if (drv->num_filter_ssids && 3670 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) { 3671 match_sets = nlmsg_alloc(); 3672 3673 for (i = 0; i < drv->num_filter_ssids; i++) { 3674 wpa_hexdump_ascii(MSG_MSGDUMP, 3675 "nl80211: Sched scan filter SSID", 3676 drv->filter_ssids[i].ssid, 3677 drv->filter_ssids[i].ssid_len); 3678 3679 match_set_ssid = nlmsg_alloc(); 3680 nla_put(match_set_ssid, 3681 NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 3682 drv->filter_ssids[i].ssid_len, 3683 drv->filter_ssids[i].ssid); 3684 3685 nla_put_nested(match_sets, i + 1, match_set_ssid); 3686 3687 nlmsg_free(match_set_ssid); 3688 } 3689 3690 nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH, 3691 match_sets); 3692 nlmsg_free(match_sets); 3693 } 3694 3695 for (i = 0; i < params->num_ssids; i++) { 3696 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan SSID", 3697 params->ssids[i].ssid, 3698 params->ssids[i].ssid_len); 3699 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len, 3700 params->ssids[i].ssid); 3701 } 3702 if (params->num_ssids) 3703 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3704 3705 if (params->extra_ies) { 3706 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan extra IEs", 3707 params->extra_ies, params->extra_ies_len); 3708 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len, 3709 params->extra_ies); 3710 } 3711 3712 if (params->freqs) { 3713 for (i = 0; params->freqs[i]; i++) { 3714 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3715 "MHz", params->freqs[i]); 3716 NLA_PUT_U32(freqs, i + 1, params->freqs[i]); 3717 } 3718 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); 3719 } 3720 3721 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3722 3723 /* TODO: if we get an error here, we should fall back to normal scan */ 3724 3725 msg = NULL; 3726 if (ret) { 3727 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 3728 "ret=%d (%s)", ret, strerror(-ret)); 3729 goto nla_put_failure; 3730 } 3731 3732 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 3733 "scan interval %d msec", ret, interval); 3734 3735nla_put_failure: 3736 nlmsg_free(ssids); 3737 nlmsg_free(msg); 3738 nlmsg_free(freqs); 3739 return ret; 3740} 3741 3742 3743/** 3744 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 3745 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3746 * Returns: 0 on success, -1 on failure or if not supported 3747 */ 3748static int wpa_driver_nl80211_stop_sched_scan(void *priv) 3749{ 3750 struct i802_bss *bss = priv; 3751 struct wpa_driver_nl80211_data *drv = bss->drv; 3752 int ret = 0; 3753 struct nl_msg *msg; 3754 3755#ifdef ANDROID 3756 if (!drv->capa.sched_scan_supported) 3757 return android_pno_stop(bss); 3758#endif /* ANDROID */ 3759 3760 msg = nlmsg_alloc(); 3761 if (!msg) 3762 return -1; 3763 3764 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 3765 3766 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3767 3768 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3769 msg = NULL; 3770 if (ret) { 3771 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 3772 "ret=%d (%s)", ret, strerror(-ret)); 3773 goto nla_put_failure; 3774 } 3775 3776 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 3777 3778nla_put_failure: 3779 nlmsg_free(msg); 3780 return ret; 3781} 3782 3783 3784static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 3785{ 3786 const u8 *end, *pos; 3787 3788 if (ies == NULL) 3789 return NULL; 3790 3791 pos = ies; 3792 end = ies + ies_len; 3793 3794 while (pos + 1 < end) { 3795 if (pos + 2 + pos[1] > end) 3796 break; 3797 if (pos[0] == ie) 3798 return pos; 3799 pos += 2 + pos[1]; 3800 } 3801 3802 return NULL; 3803} 3804 3805 3806static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 3807 const u8 *ie, size_t ie_len) 3808{ 3809 const u8 *ssid; 3810 size_t i; 3811 3812 if (drv->filter_ssids == NULL) 3813 return 0; 3814 3815 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 3816 if (ssid == NULL) 3817 return 1; 3818 3819 for (i = 0; i < drv->num_filter_ssids; i++) { 3820 if (ssid[1] == drv->filter_ssids[i].ssid_len && 3821 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 3822 0) 3823 return 0; 3824 } 3825 3826 return 1; 3827} 3828 3829 3830static int bss_info_handler(struct nl_msg *msg, void *arg) 3831{ 3832 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 3833 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3834 struct nlattr *bss[NL80211_BSS_MAX + 1]; 3835 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 3836 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 3837 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 3838 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 3839 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 3840 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 3841 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 3842 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 3843 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 3844 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 3845 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 3846 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 3847 }; 3848 struct nl80211_bss_info_arg *_arg = arg; 3849 struct wpa_scan_results *res = _arg->res; 3850 struct wpa_scan_res **tmp; 3851 struct wpa_scan_res *r; 3852 const u8 *ie, *beacon_ie; 3853 size_t ie_len, beacon_ie_len; 3854 u8 *pos; 3855 size_t i; 3856 3857 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3858 genlmsg_attrlen(gnlh, 0), NULL); 3859 if (!tb[NL80211_ATTR_BSS]) 3860 return NL_SKIP; 3861 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 3862 bss_policy)) 3863 return NL_SKIP; 3864 if (bss[NL80211_BSS_STATUS]) { 3865 enum nl80211_bss_status status; 3866 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 3867 if (status == NL80211_BSS_STATUS_ASSOCIATED && 3868 bss[NL80211_BSS_FREQUENCY]) { 3869 _arg->assoc_freq = 3870 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 3871 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 3872 _arg->assoc_freq); 3873 } 3874 if (status == NL80211_BSS_STATUS_ASSOCIATED && 3875 bss[NL80211_BSS_BSSID]) { 3876 os_memcpy(_arg->assoc_bssid, 3877 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 3878 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 3879 MACSTR, MAC2STR(_arg->assoc_bssid)); 3880 } 3881 } 3882 if (!res) 3883 return NL_SKIP; 3884 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 3885 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 3886 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 3887 } else { 3888 ie = NULL; 3889 ie_len = 0; 3890 } 3891 if (bss[NL80211_BSS_BEACON_IES]) { 3892 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 3893 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 3894 } else { 3895 beacon_ie = NULL; 3896 beacon_ie_len = 0; 3897 } 3898 3899 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 3900 ie ? ie_len : beacon_ie_len)) 3901 return NL_SKIP; 3902 3903 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 3904 if (r == NULL) 3905 return NL_SKIP; 3906 if (bss[NL80211_BSS_BSSID]) 3907 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 3908 ETH_ALEN); 3909 if (bss[NL80211_BSS_FREQUENCY]) 3910 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 3911 if (bss[NL80211_BSS_BEACON_INTERVAL]) 3912 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 3913 if (bss[NL80211_BSS_CAPABILITY]) 3914 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 3915 r->flags |= WPA_SCAN_NOISE_INVALID; 3916 if (bss[NL80211_BSS_SIGNAL_MBM]) { 3917 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 3918 r->level /= 100; /* mBm to dBm */ 3919 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 3920 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 3921 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 3922 r->flags |= WPA_SCAN_QUAL_INVALID; 3923 } else 3924 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 3925 if (bss[NL80211_BSS_TSF]) 3926 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 3927 if (bss[NL80211_BSS_SEEN_MS_AGO]) 3928 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 3929 r->ie_len = ie_len; 3930 pos = (u8 *) (r + 1); 3931 if (ie) { 3932 os_memcpy(pos, ie, ie_len); 3933 pos += ie_len; 3934 } 3935 r->beacon_ie_len = beacon_ie_len; 3936 if (beacon_ie) 3937 os_memcpy(pos, beacon_ie, beacon_ie_len); 3938 3939 if (bss[NL80211_BSS_STATUS]) { 3940 enum nl80211_bss_status status; 3941 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 3942 switch (status) { 3943 case NL80211_BSS_STATUS_AUTHENTICATED: 3944 r->flags |= WPA_SCAN_AUTHENTICATED; 3945 break; 3946 case NL80211_BSS_STATUS_ASSOCIATED: 3947 r->flags |= WPA_SCAN_ASSOCIATED; 3948 break; 3949 default: 3950 break; 3951 } 3952 } 3953 3954 /* 3955 * cfg80211 maintains separate BSS table entries for APs if the same 3956 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 3957 * not use frequency as a separate key in the BSS table, so filter out 3958 * duplicated entries. Prefer associated BSS entry in such a case in 3959 * order to get the correct frequency into the BSS table. 3960 */ 3961 for (i = 0; i < res->num; i++) { 3962 const u8 *s1, *s2; 3963 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 3964 continue; 3965 3966 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 3967 res->res[i]->ie_len, WLAN_EID_SSID); 3968 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 3969 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 3970 os_memcmp(s1, s2, 2 + s1[1]) != 0) 3971 continue; 3972 3973 /* Same BSSID,SSID was already included in scan results */ 3974 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 3975 "for " MACSTR, MAC2STR(r->bssid)); 3976 3977 if ((r->flags & WPA_SCAN_ASSOCIATED) && 3978 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 3979 os_free(res->res[i]); 3980 res->res[i] = r; 3981 } else 3982 os_free(r); 3983 return NL_SKIP; 3984 } 3985 3986 tmp = os_realloc(res->res, 3987 (res->num + 1) * sizeof(struct wpa_scan_res *)); 3988 if (tmp == NULL) { 3989 os_free(r); 3990 return NL_SKIP; 3991 } 3992 tmp[res->num++] = r; 3993 res->res = tmp; 3994 3995 return NL_SKIP; 3996} 3997 3998 3999static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 4000 const u8 *addr) 4001{ 4002 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4003 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4004 "mismatch (" MACSTR ")", MAC2STR(addr)); 4005 wpa_driver_nl80211_mlme(drv, addr, 4006 NL80211_CMD_DEAUTHENTICATE, 4007 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4008 } 4009} 4010 4011 4012static void wpa_driver_nl80211_check_bss_status( 4013 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4014{ 4015 size_t i; 4016 4017 for (i = 0; i < res->num; i++) { 4018 struct wpa_scan_res *r = res->res[i]; 4019 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4020 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4021 "indicates BSS status with " MACSTR 4022 " as authenticated", 4023 MAC2STR(r->bssid)); 4024 if (is_sta_interface(drv->nlmode) && 4025 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4026 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4027 0) { 4028 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4029 " in local state (auth=" MACSTR 4030 " assoc=" MACSTR ")", 4031 MAC2STR(drv->auth_bssid), 4032 MAC2STR(drv->bssid)); 4033 clear_state_mismatch(drv, r->bssid); 4034 } 4035 } 4036 4037 if (r->flags & WPA_SCAN_ASSOCIATED) { 4038 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4039 "indicate BSS status with " MACSTR 4040 " as associated", 4041 MAC2STR(r->bssid)); 4042 if (is_sta_interface(drv->nlmode) && 4043 !drv->associated) { 4044 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4045 "(not associated) does not match " 4046 "with BSS state"); 4047 clear_state_mismatch(drv, r->bssid); 4048 } else if (is_sta_interface(drv->nlmode) && 4049 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4050 0) { 4051 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4052 "(associated with " MACSTR ") does " 4053 "not match with BSS state", 4054 MAC2STR(drv->bssid)); 4055 clear_state_mismatch(drv, r->bssid); 4056 clear_state_mismatch(drv, drv->bssid); 4057 } 4058 } 4059 } 4060} 4061 4062 4063static struct wpa_scan_results * 4064nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4065{ 4066 struct nl_msg *msg; 4067 struct wpa_scan_results *res; 4068 int ret; 4069 struct nl80211_bss_info_arg arg; 4070 4071 res = os_zalloc(sizeof(*res)); 4072 if (res == NULL) 4073 return NULL; 4074 msg = nlmsg_alloc(); 4075 if (!msg) 4076 goto nla_put_failure; 4077 4078 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 4079 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4080 4081 arg.drv = drv; 4082 arg.res = res; 4083 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 4084 msg = NULL; 4085 if (ret == 0) { 4086 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4087 "BSSes)", (unsigned long) res->num); 4088 nl80211_get_noise_for_scan_results(drv, res); 4089 return res; 4090 } 4091 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4092 "(%s)", ret, strerror(-ret)); 4093nla_put_failure: 4094 nlmsg_free(msg); 4095 wpa_scan_results_free(res); 4096 return NULL; 4097} 4098 4099 4100/** 4101 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4102 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4103 * Returns: Scan results on success, -1 on failure 4104 */ 4105static struct wpa_scan_results * 4106wpa_driver_nl80211_get_scan_results(void *priv) 4107{ 4108 struct i802_bss *bss = priv; 4109 struct wpa_driver_nl80211_data *drv = bss->drv; 4110 struct wpa_scan_results *res; 4111 4112 res = nl80211_get_scan_results(drv); 4113 if (res) 4114 wpa_driver_nl80211_check_bss_status(drv, res); 4115 return res; 4116} 4117 4118 4119static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4120{ 4121 struct wpa_scan_results *res; 4122 size_t i; 4123 4124 res = nl80211_get_scan_results(drv); 4125 if (res == NULL) { 4126 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4127 return; 4128 } 4129 4130 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4131 for (i = 0; i < res->num; i++) { 4132 struct wpa_scan_res *r = res->res[i]; 4133 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4134 (int) i, (int) res->num, MAC2STR(r->bssid), 4135 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4136 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4137 } 4138 4139 wpa_scan_results_free(res); 4140} 4141 4142 4143static int wpa_driver_nl80211_set_key(const char *ifname, void *priv, 4144 enum wpa_alg alg, const u8 *addr, 4145 int key_idx, int set_tx, 4146 const u8 *seq, size_t seq_len, 4147 const u8 *key, size_t key_len) 4148{ 4149 struct i802_bss *bss = priv; 4150 struct wpa_driver_nl80211_data *drv = bss->drv; 4151 int ifindex = if_nametoindex(ifname); 4152 struct nl_msg *msg; 4153 int ret; 4154 4155 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4156 "set_tx=%d seq_len=%lu key_len=%lu", 4157 __func__, ifindex, alg, addr, key_idx, set_tx, 4158 (unsigned long) seq_len, (unsigned long) key_len); 4159#ifdef CONFIG_TDLS 4160 if (key_idx == -1) 4161 key_idx = 0; 4162#endif /* CONFIG_TDLS */ 4163 4164 msg = nlmsg_alloc(); 4165 if (!msg) 4166 return -ENOMEM; 4167 4168 if (alg == WPA_ALG_NONE) { 4169 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4170 } else { 4171 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4172 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4173 switch (alg) { 4174 case WPA_ALG_WEP: 4175 if (key_len == 5) 4176 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4177 WLAN_CIPHER_SUITE_WEP40); 4178 else 4179 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4180 WLAN_CIPHER_SUITE_WEP104); 4181 break; 4182 case WPA_ALG_TKIP: 4183 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4184 WLAN_CIPHER_SUITE_TKIP); 4185 break; 4186 case WPA_ALG_CCMP: 4187 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4188 WLAN_CIPHER_SUITE_CCMP); 4189 break; 4190 case WPA_ALG_IGTK: 4191 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4192 WLAN_CIPHER_SUITE_AES_CMAC); 4193 break; 4194 default: 4195 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4196 "algorithm %d", __func__, alg); 4197 nlmsg_free(msg); 4198 return -1; 4199 } 4200 } 4201 4202 if (seq && seq_len) 4203 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4204 4205 if (addr && !is_broadcast_ether_addr(addr)) { 4206 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4207 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4208 4209 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4210 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4211 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4212 NL80211_KEYTYPE_GROUP); 4213 } 4214 } else if (addr && is_broadcast_ether_addr(addr)) { 4215 struct nl_msg *types; 4216 int err; 4217 wpa_printf(MSG_DEBUG, " broadcast key"); 4218 types = nlmsg_alloc(); 4219 if (!types) 4220 goto nla_put_failure; 4221 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4222 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4223 types); 4224 nlmsg_free(types); 4225 if (err) 4226 goto nla_put_failure; 4227 } 4228 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4229 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4230 4231 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4232 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4233 ret = 0; 4234 if (ret) 4235 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4236 ret, strerror(-ret)); 4237 4238 /* 4239 * If we failed or don't need to set the default TX key (below), 4240 * we're done here. 4241 */ 4242 if (ret || !set_tx || alg == WPA_ALG_NONE) 4243 return ret; 4244 if (is_ap_interface(drv->nlmode) && addr && 4245 !is_broadcast_ether_addr(addr)) 4246 return ret; 4247 4248 msg = nlmsg_alloc(); 4249 if (!msg) 4250 return -ENOMEM; 4251 4252 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4253 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4254 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4255 if (alg == WPA_ALG_IGTK) 4256 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4257 else 4258 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4259 if (addr && is_broadcast_ether_addr(addr)) { 4260 struct nl_msg *types; 4261 int err; 4262 types = nlmsg_alloc(); 4263 if (!types) 4264 goto nla_put_failure; 4265 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4266 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4267 types); 4268 nlmsg_free(types); 4269 if (err) 4270 goto nla_put_failure; 4271 } else if (addr) { 4272 struct nl_msg *types; 4273 int err; 4274 types = nlmsg_alloc(); 4275 if (!types) 4276 goto nla_put_failure; 4277 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4278 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4279 types); 4280 nlmsg_free(types); 4281 if (err) 4282 goto nla_put_failure; 4283 } 4284 4285 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4286 if (ret == -ENOENT) 4287 ret = 0; 4288 if (ret) 4289 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4290 "err=%d %s)", ret, strerror(-ret)); 4291 return ret; 4292 4293nla_put_failure: 4294 nlmsg_free(msg); 4295 return -ENOBUFS; 4296} 4297 4298 4299static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4300 int key_idx, int defkey, 4301 const u8 *seq, size_t seq_len, 4302 const u8 *key, size_t key_len) 4303{ 4304 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4305 if (!key_attr) 4306 return -1; 4307 4308 if (defkey && alg == WPA_ALG_IGTK) 4309 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4310 else if (defkey) 4311 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4312 4313 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4314 4315 switch (alg) { 4316 case WPA_ALG_WEP: 4317 if (key_len == 5) 4318 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4319 WLAN_CIPHER_SUITE_WEP40); 4320 else 4321 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4322 WLAN_CIPHER_SUITE_WEP104); 4323 break; 4324 case WPA_ALG_TKIP: 4325 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4326 break; 4327 case WPA_ALG_CCMP: 4328 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4329 break; 4330 case WPA_ALG_IGTK: 4331 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4332 WLAN_CIPHER_SUITE_AES_CMAC); 4333 break; 4334 default: 4335 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4336 "algorithm %d", __func__, alg); 4337 return -1; 4338 } 4339 4340 if (seq && seq_len) 4341 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4342 4343 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4344 4345 nla_nest_end(msg, key_attr); 4346 4347 return 0; 4348 nla_put_failure: 4349 return -1; 4350} 4351 4352 4353static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4354 struct nl_msg *msg) 4355{ 4356 int i, privacy = 0; 4357 struct nlattr *nl_keys, *nl_key; 4358 4359 for (i = 0; i < 4; i++) { 4360 if (!params->wep_key[i]) 4361 continue; 4362 privacy = 1; 4363 break; 4364 } 4365 if (params->wps == WPS_MODE_PRIVACY) 4366 privacy = 1; 4367 if (params->pairwise_suite && 4368 params->pairwise_suite != WPA_CIPHER_NONE) 4369 privacy = 1; 4370 4371 if (!privacy) 4372 return 0; 4373 4374 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4375 4376 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4377 if (!nl_keys) 4378 goto nla_put_failure; 4379 4380 for (i = 0; i < 4; i++) { 4381 if (!params->wep_key[i]) 4382 continue; 4383 4384 nl_key = nla_nest_start(msg, i); 4385 if (!nl_key) 4386 goto nla_put_failure; 4387 4388 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4389 params->wep_key[i]); 4390 if (params->wep_key_len[i] == 5) 4391 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4392 WLAN_CIPHER_SUITE_WEP40); 4393 else 4394 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4395 WLAN_CIPHER_SUITE_WEP104); 4396 4397 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4398 4399 if (i == params->wep_tx_keyidx) 4400 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4401 4402 nla_nest_end(msg, nl_key); 4403 } 4404 nla_nest_end(msg, nl_keys); 4405 4406 return 0; 4407 4408nla_put_failure: 4409 return -ENOBUFS; 4410} 4411 4412 4413static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4414 const u8 *addr, int cmd, u16 reason_code, 4415 int local_state_change) 4416{ 4417 int ret = -1; 4418 struct nl_msg *msg; 4419 4420 msg = nlmsg_alloc(); 4421 if (!msg) 4422 return -1; 4423 4424 nl80211_cmd(drv, msg, 0, cmd); 4425 4426 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4427 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4428 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4429 if (local_state_change) 4430 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4431 4432 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4433 msg = NULL; 4434 if (ret) { 4435 wpa_dbg(drv->ctx, MSG_DEBUG, 4436 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4437 reason_code, ret, strerror(-ret)); 4438 goto nla_put_failure; 4439 } 4440 ret = 0; 4441 4442nla_put_failure: 4443 nlmsg_free(msg); 4444 return ret; 4445} 4446 4447 4448static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4449 const u8 *addr, int reason_code) 4450{ 4451 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4452 __func__, MAC2STR(addr), reason_code); 4453 drv->associated = 0; 4454 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT, 4455 reason_code, 0); 4456} 4457 4458 4459static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr, 4460 int reason_code) 4461{ 4462 struct i802_bss *bss = priv; 4463 struct wpa_driver_nl80211_data *drv = bss->drv; 4464 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4465 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 4466 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4467 __func__, MAC2STR(addr), reason_code); 4468 drv->associated = 0; 4469 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4470 return nl80211_leave_ibss(drv); 4471 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4472 reason_code, 0); 4473} 4474 4475 4476static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr, 4477 int reason_code) 4478{ 4479 struct i802_bss *bss = priv; 4480 struct wpa_driver_nl80211_data *drv = bss->drv; 4481 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4482 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 4483 wpa_printf(MSG_DEBUG, "%s", __func__); 4484 drv->associated = 0; 4485 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE, 4486 reason_code, 0); 4487} 4488 4489 4490static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4491 struct wpa_driver_auth_params *params) 4492{ 4493 int i; 4494 4495 drv->auth_freq = params->freq; 4496 drv->auth_alg = params->auth_alg; 4497 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4498 drv->auth_local_state_change = params->local_state_change; 4499 drv->auth_p2p = params->p2p; 4500 4501 if (params->bssid) 4502 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4503 else 4504 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4505 4506 if (params->ssid) { 4507 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4508 drv->auth_ssid_len = params->ssid_len; 4509 } else 4510 drv->auth_ssid_len = 0; 4511 4512 4513 os_free(drv->auth_ie); 4514 drv->auth_ie = NULL; 4515 drv->auth_ie_len = 0; 4516 if (params->ie) { 4517 drv->auth_ie = os_malloc(params->ie_len); 4518 if (drv->auth_ie) { 4519 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4520 drv->auth_ie_len = params->ie_len; 4521 } 4522 } 4523 4524 for (i = 0; i < 4; i++) { 4525 if (params->wep_key[i] && params->wep_key_len[i] && 4526 params->wep_key_len[i] <= 16) { 4527 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4528 params->wep_key_len[i]); 4529 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4530 } else 4531 drv->auth_wep_key_len[i] = 0; 4532 } 4533} 4534 4535 4536static int wpa_driver_nl80211_authenticate( 4537 void *priv, struct wpa_driver_auth_params *params) 4538{ 4539 struct i802_bss *bss = priv; 4540 struct wpa_driver_nl80211_data *drv = bss->drv; 4541 int ret = -1, i; 4542 struct nl_msg *msg; 4543 enum nl80211_auth_type type; 4544 enum nl80211_iftype nlmode; 4545 int count = 0; 4546 int is_retry; 4547 4548 is_retry = drv->retry_auth; 4549 drv->retry_auth = 0; 4550 4551 drv->associated = 0; 4552 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4553 /* FIX: IBSS mode */ 4554 nlmode = params->p2p ? 4555 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4556 if (drv->nlmode != nlmode && 4557 wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 4558 return -1; 4559 4560retry: 4561 msg = nlmsg_alloc(); 4562 if (!msg) 4563 return -1; 4564 4565 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4566 drv->ifindex); 4567 4568 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4569 4570 for (i = 0; i < 4; i++) { 4571 if (!params->wep_key[i]) 4572 continue; 4573 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP, 4574 NULL, i, 4575 i == params->wep_tx_keyidx, NULL, 0, 4576 params->wep_key[i], 4577 params->wep_key_len[i]); 4578 if (params->wep_tx_keyidx != i) 4579 continue; 4580 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4581 params->wep_key[i], params->wep_key_len[i])) { 4582 nlmsg_free(msg); 4583 return -1; 4584 } 4585 } 4586 4587 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4588 if (params->bssid) { 4589 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4590 MAC2STR(params->bssid)); 4591 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4592 } 4593 if (params->freq) { 4594 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4595 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4596 } 4597 if (params->ssid) { 4598 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4599 params->ssid, params->ssid_len); 4600 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4601 params->ssid); 4602 } 4603 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4604 if (params->ie) 4605 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4606 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4607 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4608 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4609 type = NL80211_AUTHTYPE_SHARED_KEY; 4610 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4611 type = NL80211_AUTHTYPE_NETWORK_EAP; 4612 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4613 type = NL80211_AUTHTYPE_FT; 4614 else 4615 goto nla_put_failure; 4616 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4617 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4618 if (params->local_state_change) { 4619 wpa_printf(MSG_DEBUG, " * Local state change only"); 4620 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4621 } 4622 4623 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4624 msg = NULL; 4625 if (ret) { 4626 wpa_dbg(drv->ctx, MSG_DEBUG, 4627 "nl80211: MLME command failed (auth): ret=%d (%s)", 4628 ret, strerror(-ret)); 4629 count++; 4630 if (ret == -EALREADY && count == 1 && params->bssid && 4631 !params->local_state_change) { 4632 /* 4633 * mac80211 does not currently accept new 4634 * authentication if we are already authenticated. As a 4635 * workaround, force deauthentication and try again. 4636 */ 4637 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4638 "after forced deauthentication"); 4639 wpa_driver_nl80211_deauthenticate( 4640 bss, params->bssid, 4641 WLAN_REASON_PREV_AUTH_NOT_VALID); 4642 nlmsg_free(msg); 4643 goto retry; 4644 } 4645 4646 if (ret == -ENOENT && params->freq && !is_retry) { 4647 /* 4648 * cfg80211 has likely expired the BSS entry even 4649 * though it was previously available in our internal 4650 * BSS table. To recover quickly, start a single 4651 * channel scan on the specified channel. 4652 */ 4653 struct wpa_driver_scan_params scan; 4654 int freqs[2]; 4655 4656 os_memset(&scan, 0, sizeof(scan)); 4657 scan.num_ssids = 1; 4658 if (params->ssid) { 4659 scan.ssids[0].ssid = params->ssid; 4660 scan.ssids[0].ssid_len = params->ssid_len; 4661 } 4662 freqs[0] = params->freq; 4663 freqs[1] = 0; 4664 scan.freqs = freqs; 4665 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 4666 "channel scan to refresh cfg80211 BSS " 4667 "entry"); 4668 ret = wpa_driver_nl80211_scan(bss, &scan); 4669 if (ret == 0) { 4670 nl80211_copy_auth_params(drv, params); 4671 drv->scan_for_auth = 1; 4672 } 4673 } else if (is_retry) { 4674 /* 4675 * Need to indicate this with an event since the return 4676 * value from the retry is not delivered to core code. 4677 */ 4678 union wpa_event_data event; 4679 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 4680 "failed"); 4681 os_memset(&event, 0, sizeof(event)); 4682 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 4683 ETH_ALEN); 4684 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 4685 &event); 4686 } 4687 4688 goto nla_put_failure; 4689 } 4690 ret = 0; 4691 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 4692 "successfully"); 4693 4694nla_put_failure: 4695 nlmsg_free(msg); 4696 return ret; 4697} 4698 4699 4700static int wpa_driver_nl80211_authenticate_retry( 4701 struct wpa_driver_nl80211_data *drv) 4702{ 4703 struct wpa_driver_auth_params params; 4704 struct i802_bss *bss = &drv->first_bss; 4705 int i; 4706 4707 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 4708 4709 os_memset(¶ms, 0, sizeof(params)); 4710 params.freq = drv->auth_freq; 4711 params.auth_alg = drv->auth_alg; 4712 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 4713 params.local_state_change = drv->auth_local_state_change; 4714 params.p2p = drv->auth_p2p; 4715 4716 if (!is_zero_ether_addr(drv->auth_bssid_)) 4717 params.bssid = drv->auth_bssid_; 4718 4719 if (drv->auth_ssid_len) { 4720 params.ssid = drv->auth_ssid; 4721 params.ssid_len = drv->auth_ssid_len; 4722 } 4723 4724 params.ie = drv->auth_ie; 4725 params.ie_len = drv->auth_ie_len; 4726 4727 for (i = 0; i < 4; i++) { 4728 if (drv->auth_wep_key_len[i]) { 4729 params.wep_key[i] = drv->auth_wep_key[i]; 4730 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 4731 } 4732 } 4733 4734 drv->retry_auth = 1; 4735 return wpa_driver_nl80211_authenticate(bss, ¶ms); 4736} 4737 4738 4739struct phy_info_arg { 4740 u16 *num_modes; 4741 struct hostapd_hw_modes *modes; 4742}; 4743 4744static int phy_info_handler(struct nl_msg *msg, void *arg) 4745{ 4746 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 4747 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4748 struct phy_info_arg *phy_info = arg; 4749 4750 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 4751 4752 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 4753 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 4754 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 4755 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 4756 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 4757 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 4758 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 4759 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 4760 }; 4761 4762 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 4763 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 4764 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 4765 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG }, 4766 }; 4767 4768 struct nlattr *nl_band; 4769 struct nlattr *nl_freq; 4770 struct nlattr *nl_rate; 4771 int rem_band, rem_freq, rem_rate; 4772 struct hostapd_hw_modes *mode; 4773 int idx, mode_is_set; 4774 4775 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4776 genlmsg_attrlen(gnlh, 0), NULL); 4777 4778 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 4779 return NL_SKIP; 4780 4781 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) { 4782 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode)); 4783 if (!mode) 4784 return NL_SKIP; 4785 phy_info->modes = mode; 4786 4787 mode_is_set = 0; 4788 4789 mode = &phy_info->modes[*(phy_info->num_modes)]; 4790 memset(mode, 0, sizeof(*mode)); 4791 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 4792 *(phy_info->num_modes) += 1; 4793 4794 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 4795 nla_len(nl_band), NULL); 4796 4797 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) { 4798 mode->ht_capab = nla_get_u16( 4799 tb_band[NL80211_BAND_ATTR_HT_CAPA]); 4800 } 4801 4802 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) { 4803 mode->a_mpdu_params |= nla_get_u8( 4804 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) & 4805 0x03; 4806 } 4807 4808 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) { 4809 mode->a_mpdu_params |= nla_get_u8( 4810 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) << 4811 2; 4812 } 4813 4814 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] && 4815 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) { 4816 u8 *mcs; 4817 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 4818 os_memcpy(mode->mcs_set, mcs, 16); 4819 } 4820 4821 if (tb_band[NL80211_BAND_ATTR_VHT_CAPA]) { 4822 mode->vht_capab = nla_get_u32( 4823 tb_band[NL80211_BAND_ATTR_VHT_CAPA]); 4824 } 4825 4826 if (tb_band[NL80211_BAND_ATTR_VHT_MCS_SET] && 4827 nla_len(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])) { 4828 u8 *mcs; 4829 mcs = nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 4830 os_memcpy(mode->vht_mcs_set, mcs, 8); 4831 } 4832 4833 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 4834 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 4835 nla_len(nl_freq), freq_policy); 4836 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 4837 continue; 4838 mode->num_channels++; 4839 } 4840 4841 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data)); 4842 if (!mode->channels) 4843 return NL_SKIP; 4844 4845 idx = 0; 4846 4847 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 4848 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 4849 nla_len(nl_freq), freq_policy); 4850 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 4851 continue; 4852 4853 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 4854 mode->channels[idx].flag = 0; 4855 4856 if (!mode_is_set) { 4857 /* crude heuristic */ 4858 if (mode->channels[idx].freq < 4000) 4859 mode->mode = HOSTAPD_MODE_IEEE80211B; 4860 else 4861 mode->mode = HOSTAPD_MODE_IEEE80211A; 4862 mode_is_set = 1; 4863 } 4864 4865 /* crude heuristic */ 4866 if (mode->channels[idx].freq < 4000) 4867 if (mode->channels[idx].freq == 2484) 4868 mode->channels[idx].chan = 14; 4869 else 4870 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5; 4871 else 4872 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000; 4873 4874 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 4875 mode->channels[idx].flag |= 4876 HOSTAPD_CHAN_DISABLED; 4877 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 4878 mode->channels[idx].flag |= 4879 HOSTAPD_CHAN_PASSIVE_SCAN; 4880 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 4881 mode->channels[idx].flag |= 4882 HOSTAPD_CHAN_NO_IBSS; 4883 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 4884 mode->channels[idx].flag |= 4885 HOSTAPD_CHAN_RADAR; 4886 4887 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 4888 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 4889 mode->channels[idx].max_tx_power = 4890 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 4891 4892 idx++; 4893 } 4894 4895 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 4896 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 4897 nla_len(nl_rate), rate_policy); 4898 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 4899 continue; 4900 mode->num_rates++; 4901 } 4902 4903 mode->rates = os_zalloc(mode->num_rates * sizeof(int)); 4904 if (!mode->rates) 4905 return NL_SKIP; 4906 4907 idx = 0; 4908 4909 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 4910 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 4911 nla_len(nl_rate), rate_policy); 4912 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 4913 continue; 4914 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]); 4915 4916 /* crude heuristic */ 4917 if (mode->mode == HOSTAPD_MODE_IEEE80211B && 4918 mode->rates[idx] > 200) 4919 mode->mode = HOSTAPD_MODE_IEEE80211G; 4920 4921 idx++; 4922 } 4923 } 4924 4925 return NL_SKIP; 4926} 4927 4928static struct hostapd_hw_modes * 4929wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes) 4930{ 4931 u16 m; 4932 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 4933 int i, mode11g_idx = -1; 4934 4935 /* If only 802.11g mode is included, use it to construct matching 4936 * 802.11b mode data. */ 4937 4938 for (m = 0; m < *num_modes; m++) { 4939 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 4940 return modes; /* 802.11b already included */ 4941 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 4942 mode11g_idx = m; 4943 } 4944 4945 if (mode11g_idx < 0) 4946 return modes; /* 2.4 GHz band not supported at all */ 4947 4948 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes)); 4949 if (nmodes == NULL) 4950 return modes; /* Could not add 802.11b mode */ 4951 4952 mode = &nmodes[*num_modes]; 4953 os_memset(mode, 0, sizeof(*mode)); 4954 (*num_modes)++; 4955 modes = nmodes; 4956 4957 mode->mode = HOSTAPD_MODE_IEEE80211B; 4958 4959 mode11g = &modes[mode11g_idx]; 4960 mode->num_channels = mode11g->num_channels; 4961 mode->channels = os_malloc(mode11g->num_channels * 4962 sizeof(struct hostapd_channel_data)); 4963 if (mode->channels == NULL) { 4964 (*num_modes)--; 4965 return modes; /* Could not add 802.11b mode */ 4966 } 4967 os_memcpy(mode->channels, mode11g->channels, 4968 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 4969 4970 mode->num_rates = 0; 4971 mode->rates = os_malloc(4 * sizeof(int)); 4972 if (mode->rates == NULL) { 4973 os_free(mode->channels); 4974 (*num_modes)--; 4975 return modes; /* Could not add 802.11b mode */ 4976 } 4977 4978 for (i = 0; i < mode11g->num_rates; i++) { 4979 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 4980 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 4981 continue; 4982 mode->rates[mode->num_rates] = mode11g->rates[i]; 4983 mode->num_rates++; 4984 if (mode->num_rates == 4) 4985 break; 4986 } 4987 4988 if (mode->num_rates == 0) { 4989 os_free(mode->channels); 4990 os_free(mode->rates); 4991 (*num_modes)--; 4992 return modes; /* No 802.11b rates */ 4993 } 4994 4995 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 4996 "information"); 4997 4998 return modes; 4999} 5000 5001 5002static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5003 int end) 5004{ 5005 int c; 5006 5007 for (c = 0; c < mode->num_channels; c++) { 5008 struct hostapd_channel_data *chan = &mode->channels[c]; 5009 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5010 chan->flag |= HOSTAPD_CHAN_HT40; 5011 } 5012} 5013 5014 5015static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5016 int end) 5017{ 5018 int c; 5019 5020 for (c = 0; c < mode->num_channels; c++) { 5021 struct hostapd_channel_data *chan = &mode->channels[c]; 5022 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5023 continue; 5024 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5025 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5026 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5027 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5028 } 5029} 5030 5031 5032static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5033 struct phy_info_arg *results) 5034{ 5035 u32 start, end, max_bw; 5036 u16 m; 5037 5038 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5039 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5040 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5041 return; 5042 5043 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5044 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5045 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5046 5047 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5048 start, end, max_bw); 5049 if (max_bw < 40) 5050 return; 5051 5052 for (m = 0; m < *results->num_modes; m++) { 5053 if (!(results->modes[m].ht_capab & 5054 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5055 continue; 5056 nl80211_set_ht40_mode(&results->modes[m], start, end); 5057 } 5058} 5059 5060 5061static void nl80211_reg_rule_sec(struct nlattr *tb[], 5062 struct phy_info_arg *results) 5063{ 5064 u32 start, end, max_bw; 5065 u16 m; 5066 5067 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5068 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5069 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5070 return; 5071 5072 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5073 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5074 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5075 5076 if (max_bw < 20) 5077 return; 5078 5079 for (m = 0; m < *results->num_modes; m++) { 5080 if (!(results->modes[m].ht_capab & 5081 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5082 continue; 5083 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5084 } 5085} 5086 5087 5088static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5089{ 5090 struct phy_info_arg *results = arg; 5091 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5092 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5093 struct nlattr *nl_rule; 5094 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5095 int rem_rule; 5096 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5097 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5098 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5099 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5100 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5101 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5102 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5103 }; 5104 5105 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5106 genlmsg_attrlen(gnlh, 0), NULL); 5107 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5108 !tb_msg[NL80211_ATTR_REG_RULES]) { 5109 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5110 "available"); 5111 return NL_SKIP; 5112 } 5113 5114 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5115 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5116 5117 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5118 { 5119 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5120 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5121 nl80211_reg_rule_ht40(tb_rule, results); 5122 } 5123 5124 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5125 { 5126 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5127 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5128 nl80211_reg_rule_sec(tb_rule, results); 5129 } 5130 5131 return NL_SKIP; 5132} 5133 5134 5135static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5136 struct phy_info_arg *results) 5137{ 5138 struct nl_msg *msg; 5139 5140 msg = nlmsg_alloc(); 5141 if (!msg) 5142 return -ENOMEM; 5143 5144 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5145 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5146} 5147 5148 5149static struct hostapd_hw_modes * 5150wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5151{ 5152 struct i802_bss *bss = priv; 5153 struct wpa_driver_nl80211_data *drv = bss->drv; 5154 struct nl_msg *msg; 5155 struct phy_info_arg result = { 5156 .num_modes = num_modes, 5157 .modes = NULL, 5158 }; 5159 5160 *num_modes = 0; 5161 *flags = 0; 5162 5163 msg = nlmsg_alloc(); 5164 if (!msg) 5165 return NULL; 5166 5167 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5168 5169 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5170 5171 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5172 nl80211_set_ht40_flags(drv, &result); 5173 return wpa_driver_nl80211_add_11b(result.modes, num_modes); 5174 } 5175 msg = NULL; 5176 nla_put_failure: 5177 nlmsg_free(msg); 5178 return NULL; 5179} 5180 5181 5182static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5183 const void *data, size_t len, 5184 int encrypt, int noack) 5185{ 5186 __u8 rtap_hdr[] = { 5187 0x00, 0x00, /* radiotap version */ 5188 0x0e, 0x00, /* radiotap length */ 5189 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5190 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5191 0x00, /* padding */ 5192 0x00, 0x00, /* RX and TX flags to indicate that */ 5193 0x00, 0x00, /* this is the injected frame directly */ 5194 }; 5195 struct iovec iov[2] = { 5196 { 5197 .iov_base = &rtap_hdr, 5198 .iov_len = sizeof(rtap_hdr), 5199 }, 5200 { 5201 .iov_base = (void *) data, 5202 .iov_len = len, 5203 } 5204 }; 5205 struct msghdr msg = { 5206 .msg_name = NULL, 5207 .msg_namelen = 0, 5208 .msg_iov = iov, 5209 .msg_iovlen = 2, 5210 .msg_control = NULL, 5211 .msg_controllen = 0, 5212 .msg_flags = 0, 5213 }; 5214 int res; 5215 u16 txflags = 0; 5216 5217 if (encrypt) 5218 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5219 5220 if (drv->monitor_sock < 0) { 5221 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5222 "for %s", __func__); 5223 return -1; 5224 } 5225 5226 if (noack) 5227 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5228 *(le16 *) &rtap_hdr[12] = host_to_le16(txflags); 5229 5230 res = sendmsg(drv->monitor_sock, &msg, 0); 5231 if (res < 0) { 5232 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5233 return -1; 5234 } 5235 return 0; 5236} 5237 5238 5239static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5240 const void *data, size_t len, 5241 int encrypt, int noack, 5242 unsigned int freq, int no_cck, 5243 int offchanok, unsigned int wait_time) 5244{ 5245 struct wpa_driver_nl80211_data *drv = bss->drv; 5246 u64 cookie; 5247 5248 if (freq == 0) 5249 freq = bss->freq; 5250 5251 if (drv->use_monitor) 5252 return wpa_driver_nl80211_send_mntr(drv, data, len, 5253 encrypt, noack); 5254 5255 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5256 &cookie, no_cck, noack, offchanok); 5257} 5258 5259 5260static int wpa_driver_nl80211_send_mlme_freq(struct i802_bss *bss, 5261 const u8 *data, 5262 size_t data_len, int noack, 5263 unsigned int freq, int no_cck, 5264 int offchanok, 5265 unsigned int wait_time) 5266{ 5267 struct wpa_driver_nl80211_data *drv = bss->drv; 5268 struct ieee80211_mgmt *mgmt; 5269 int encrypt = 1; 5270 u16 fc; 5271 5272 mgmt = (struct ieee80211_mgmt *) data; 5273 fc = le_to_host16(mgmt->frame_control); 5274 5275 if (is_sta_interface(drv->nlmode) && 5276 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5277 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5278 /* 5279 * The use of last_mgmt_freq is a bit of a hack, 5280 * but it works due to the single-threaded nature 5281 * of wpa_supplicant. 5282 */ 5283 if (freq == 0) 5284 freq = drv->last_mgmt_freq; 5285 return nl80211_send_frame_cmd(bss, freq, 0, 5286 data, data_len, NULL, 1, noack, 5287 1); 5288 } 5289 5290 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5291 if (freq == 0) 5292 freq = bss->freq; 5293 return nl80211_send_frame_cmd(bss, freq, 5294 (int) freq == bss->freq ? 0 : 5295 wait_time, 5296 data, data_len, 5297 &drv->send_action_cookie, 5298 no_cck, noack, offchanok); 5299 } 5300 5301 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5302 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5303 /* 5304 * Only one of the authentication frame types is encrypted. 5305 * In order for static WEP encryption to work properly (i.e., 5306 * to not encrypt the frame), we need to tell mac80211 about 5307 * the frames that must not be encrypted. 5308 */ 5309 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5310 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5311 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5312 encrypt = 0; 5313 } 5314 5315 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5316 noack, freq, no_cck, offchanok, 5317 wait_time); 5318} 5319 5320 5321static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data, 5322 size_t data_len, int noack) 5323{ 5324 struct i802_bss *bss = priv; 5325 return wpa_driver_nl80211_send_mlme_freq(bss, data, data_len, noack, 5326 0, 0, 0, 0); 5327} 5328 5329 5330static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5331 int slot, int ht_opmode, int ap_isolate, 5332 int *basic_rates) 5333{ 5334 struct wpa_driver_nl80211_data *drv = bss->drv; 5335 struct nl_msg *msg; 5336 5337 msg = nlmsg_alloc(); 5338 if (!msg) 5339 return -ENOMEM; 5340 5341 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5342 5343 if (cts >= 0) 5344 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5345 if (preamble >= 0) 5346 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5347 if (slot >= 0) 5348 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5349 if (ht_opmode >= 0) 5350 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5351 if (ap_isolate >= 0) 5352 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5353 5354 if (basic_rates) { 5355 u8 rates[NL80211_MAX_SUPP_RATES]; 5356 u8 rates_len = 0; 5357 int i; 5358 5359 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5360 i++) 5361 rates[rates_len++] = basic_rates[i] / 5; 5362 5363 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5364 } 5365 5366 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5367 5368 return send_and_recv_msgs(drv, msg, NULL, NULL); 5369 nla_put_failure: 5370 nlmsg_free(msg); 5371 return -ENOBUFS; 5372} 5373 5374 5375static int wpa_driver_nl80211_set_ap(void *priv, 5376 struct wpa_driver_ap_params *params) 5377{ 5378 struct i802_bss *bss = priv; 5379 struct wpa_driver_nl80211_data *drv = bss->drv; 5380 struct nl_msg *msg; 5381 u8 cmd = NL80211_CMD_NEW_BEACON; 5382 int ret; 5383 int beacon_set; 5384 int ifindex = if_nametoindex(bss->ifname); 5385 int num_suites; 5386 u32 suites[10]; 5387 u32 ver; 5388 5389 beacon_set = bss->beacon_set; 5390 5391 msg = nlmsg_alloc(); 5392 if (!msg) 5393 return -ENOMEM; 5394 5395 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5396 beacon_set); 5397 if (beacon_set) 5398 cmd = NL80211_CMD_SET_BEACON; 5399 5400 nl80211_cmd(drv, msg, 0, cmd); 5401 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5402 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5403 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5404 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5405 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5406 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5407 params->ssid); 5408 if (params->proberesp && params->proberesp_len) 5409 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5410 params->proberesp); 5411 switch (params->hide_ssid) { 5412 case NO_SSID_HIDING: 5413 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5414 NL80211_HIDDEN_SSID_NOT_IN_USE); 5415 break; 5416 case HIDDEN_SSID_ZERO_LEN: 5417 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5418 NL80211_HIDDEN_SSID_ZERO_LEN); 5419 break; 5420 case HIDDEN_SSID_ZERO_CONTENTS: 5421 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5422 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5423 break; 5424 } 5425 if (params->privacy) 5426 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5427 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5428 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5429 /* Leave out the attribute */ 5430 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5431 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5432 NL80211_AUTHTYPE_SHARED_KEY); 5433 else 5434 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5435 NL80211_AUTHTYPE_OPEN_SYSTEM); 5436 5437 ver = 0; 5438 if (params->wpa_version & WPA_PROTO_WPA) 5439 ver |= NL80211_WPA_VERSION_1; 5440 if (params->wpa_version & WPA_PROTO_RSN) 5441 ver |= NL80211_WPA_VERSION_2; 5442 if (ver) 5443 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5444 5445 num_suites = 0; 5446 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5447 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5448 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5449 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5450 if (num_suites) { 5451 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5452 num_suites * sizeof(u32), suites); 5453 } 5454 5455 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5456 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5457 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5458 5459 num_suites = 0; 5460 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5461 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5462 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5463 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5464 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5465 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5466 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5467 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5468 if (num_suites) { 5469 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5470 num_suites * sizeof(u32), suites); 5471 } 5472 5473 switch (params->group_cipher) { 5474 case WPA_CIPHER_CCMP: 5475 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5476 WLAN_CIPHER_SUITE_CCMP); 5477 break; 5478 case WPA_CIPHER_TKIP: 5479 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5480 WLAN_CIPHER_SUITE_TKIP); 5481 break; 5482 case WPA_CIPHER_WEP104: 5483 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5484 WLAN_CIPHER_SUITE_WEP104); 5485 break; 5486 case WPA_CIPHER_WEP40: 5487 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5488 WLAN_CIPHER_SUITE_WEP40); 5489 break; 5490 } 5491 5492 if (params->beacon_ies) { 5493 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5494 wpabuf_head(params->beacon_ies)); 5495 } 5496 if (params->proberesp_ies) { 5497 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5498 wpabuf_len(params->proberesp_ies), 5499 wpabuf_head(params->proberesp_ies)); 5500 } 5501 if (params->assocresp_ies) { 5502 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5503 wpabuf_len(params->assocresp_ies), 5504 wpabuf_head(params->assocresp_ies)); 5505 } 5506 5507 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5508 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5509 params->ap_max_inactivity); 5510 } 5511 5512 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5513 if (ret) { 5514 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5515 ret, strerror(-ret)); 5516 } else { 5517 bss->beacon_set = 1; 5518 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5519 params->short_slot_time, params->ht_opmode, 5520 params->isolate, params->basic_rates); 5521 } 5522 return ret; 5523 nla_put_failure: 5524 nlmsg_free(msg); 5525 return -ENOBUFS; 5526} 5527 5528 5529static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5530 int freq, int ht_enabled, 5531 int sec_channel_offset) 5532{ 5533 struct wpa_driver_nl80211_data *drv = bss->drv; 5534 struct nl_msg *msg; 5535 int ret; 5536 5537 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d " 5538 "sec_channel_offset=%d)", 5539 freq, ht_enabled, sec_channel_offset); 5540 msg = nlmsg_alloc(); 5541 if (!msg) 5542 return -1; 5543 5544 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5545 5546 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5547 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 5548 if (ht_enabled) { 5549 switch (sec_channel_offset) { 5550 case -1: 5551 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5552 NL80211_CHAN_HT40MINUS); 5553 break; 5554 case 1: 5555 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5556 NL80211_CHAN_HT40PLUS); 5557 break; 5558 default: 5559 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5560 NL80211_CHAN_HT20); 5561 break; 5562 } 5563 } 5564 5565 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5566 msg = NULL; 5567 if (ret == 0) { 5568 bss->freq = freq; 5569 return 0; 5570 } 5571 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 5572 "%d (%s)", freq, ret, strerror(-ret)); 5573nla_put_failure: 5574 nlmsg_free(msg); 5575 return -1; 5576} 5577 5578 5579static u32 sta_flags_nl80211(int flags) 5580{ 5581 u32 f = 0; 5582 5583 if (flags & WPA_STA_AUTHORIZED) 5584 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 5585 if (flags & WPA_STA_WMM) 5586 f |= BIT(NL80211_STA_FLAG_WME); 5587 if (flags & WPA_STA_SHORT_PREAMBLE) 5588 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 5589 if (flags & WPA_STA_MFP) 5590 f |= BIT(NL80211_STA_FLAG_MFP); 5591 if (flags & WPA_STA_TDLS_PEER) 5592 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 5593 5594 return f; 5595} 5596 5597 5598static int wpa_driver_nl80211_sta_add(void *priv, 5599 struct hostapd_sta_add_params *params) 5600{ 5601 struct i802_bss *bss = priv; 5602 struct wpa_driver_nl80211_data *drv = bss->drv; 5603 struct nl_msg *msg, *wme = NULL; 5604 struct nl80211_sta_flag_update upd; 5605 int ret = -ENOBUFS; 5606 5607 if ((params->flags & WPA_STA_TDLS_PEER) && 5608 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 5609 return -EOPNOTSUPP; 5610 5611 msg = nlmsg_alloc(); 5612 if (!msg) 5613 return -ENOMEM; 5614 5615 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 5616 NL80211_CMD_NEW_STATION); 5617 5618 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5619 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 5620 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 5621 params->supp_rates); 5622 if (!params->set) { 5623 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 5624 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 5625 params->listen_interval); 5626 } 5627 if (params->ht_capabilities) { 5628 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 5629 sizeof(*params->ht_capabilities), 5630 params->ht_capabilities); 5631 } 5632 5633 os_memset(&upd, 0, sizeof(upd)); 5634 upd.mask = sta_flags_nl80211(params->flags); 5635 upd.set = upd.mask; 5636 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 5637 5638 if (params->flags & WPA_STA_WMM) { 5639 wme = nlmsg_alloc(); 5640 if (!wme) 5641 goto nla_put_failure; 5642 5643 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES, 5644 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 5645 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP, 5646 (params->qosinfo > WMM_QOSINFO_STA_SP_SHIFT) & 5647 WMM_QOSINFO_STA_SP_MASK); 5648 nla_put_nested(msg, NL80211_ATTR_STA_WME, wme); 5649 } 5650 5651 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5652 msg = NULL; 5653 if (ret) 5654 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 5655 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 5656 strerror(-ret)); 5657 if (ret == -EEXIST) 5658 ret = 0; 5659 nla_put_failure: 5660 nlmsg_free(wme); 5661 nlmsg_free(msg); 5662 return ret; 5663} 5664 5665 5666static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr) 5667{ 5668 struct i802_bss *bss = priv; 5669 struct wpa_driver_nl80211_data *drv = bss->drv; 5670 struct nl_msg *msg; 5671 int ret; 5672 5673 msg = nlmsg_alloc(); 5674 if (!msg) 5675 return -ENOMEM; 5676 5677 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 5678 5679 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 5680 if_nametoindex(bss->ifname)); 5681 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5682 5683 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5684 if (ret == -ENOENT) 5685 return 0; 5686 return ret; 5687 nla_put_failure: 5688 nlmsg_free(msg); 5689 return -ENOBUFS; 5690} 5691 5692 5693static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 5694 int ifidx) 5695{ 5696 struct nl_msg *msg; 5697 5698 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 5699 5700 /* stop listening for EAPOL on this interface */ 5701 del_ifidx(drv, ifidx); 5702 5703 msg = nlmsg_alloc(); 5704 if (!msg) 5705 goto nla_put_failure; 5706 5707 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 5708 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 5709 5710 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 5711 return; 5712 msg = NULL; 5713 nla_put_failure: 5714 nlmsg_free(msg); 5715 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 5716} 5717 5718 5719static const char * nl80211_iftype_str(enum nl80211_iftype mode) 5720{ 5721 switch (mode) { 5722 case NL80211_IFTYPE_ADHOC: 5723 return "ADHOC"; 5724 case NL80211_IFTYPE_STATION: 5725 return "STATION"; 5726 case NL80211_IFTYPE_AP: 5727 return "AP"; 5728 case NL80211_IFTYPE_MONITOR: 5729 return "MONITOR"; 5730 case NL80211_IFTYPE_P2P_CLIENT: 5731 return "P2P_CLIENT"; 5732 case NL80211_IFTYPE_P2P_GO: 5733 return "P2P_GO"; 5734 default: 5735 return "unknown"; 5736 } 5737} 5738 5739 5740static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 5741 const char *ifname, 5742 enum nl80211_iftype iftype, 5743 const u8 *addr, int wds) 5744{ 5745 struct nl_msg *msg, *flags = NULL; 5746 int ifidx; 5747 int ret = -ENOBUFS; 5748 5749 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 5750 iftype, nl80211_iftype_str(iftype)); 5751 5752 msg = nlmsg_alloc(); 5753 if (!msg) 5754 return -1; 5755 5756 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 5757 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5758 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 5759 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 5760 5761 if (iftype == NL80211_IFTYPE_MONITOR) { 5762 int err; 5763 5764 flags = nlmsg_alloc(); 5765 if (!flags) 5766 goto nla_put_failure; 5767 5768 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); 5769 5770 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); 5771 5772 nlmsg_free(flags); 5773 5774 if (err) 5775 goto nla_put_failure; 5776 } else if (wds) { 5777 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 5778 } 5779 5780 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5781 msg = NULL; 5782 if (ret) { 5783 nla_put_failure: 5784 nlmsg_free(msg); 5785 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 5786 ifname, ret, strerror(-ret)); 5787 return ret; 5788 } 5789 5790 ifidx = if_nametoindex(ifname); 5791 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 5792 ifname, ifidx); 5793 5794 if (ifidx <= 0) 5795 return -1; 5796 5797 /* start listening for EAPOL on this interface */ 5798 add_ifidx(drv, ifidx); 5799 5800 if (addr && iftype != NL80211_IFTYPE_MONITOR && 5801 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 5802 nl80211_remove_iface(drv, ifidx); 5803 return -1; 5804 } 5805 5806 return ifidx; 5807} 5808 5809 5810static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 5811 const char *ifname, enum nl80211_iftype iftype, 5812 const u8 *addr, int wds) 5813{ 5814 int ret; 5815 5816 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 5817 5818 /* if error occurred and interface exists already */ 5819 if (ret == -ENFILE && if_nametoindex(ifname)) { 5820 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 5821 5822 /* Try to remove the interface that was already there. */ 5823 nl80211_remove_iface(drv, if_nametoindex(ifname)); 5824 5825 /* Try to create the interface again */ 5826 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 5827 wds); 5828 } 5829 5830 if (ret >= 0 && is_p2p_interface(iftype)) 5831 nl80211_disable_11b_rates(drv, ret, 1); 5832 5833 return ret; 5834} 5835 5836 5837static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 5838{ 5839 struct ieee80211_hdr *hdr; 5840 u16 fc; 5841 union wpa_event_data event; 5842 5843 hdr = (struct ieee80211_hdr *) buf; 5844 fc = le_to_host16(hdr->frame_control); 5845 5846 os_memset(&event, 0, sizeof(event)); 5847 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 5848 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 5849 event.tx_status.dst = hdr->addr1; 5850 event.tx_status.data = buf; 5851 event.tx_status.data_len = len; 5852 event.tx_status.ack = ok; 5853 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 5854} 5855 5856 5857static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 5858 u8 *buf, size_t len) 5859{ 5860 struct ieee80211_hdr *hdr = (void *)buf; 5861 u16 fc; 5862 union wpa_event_data event; 5863 5864 if (len < sizeof(*hdr)) 5865 return; 5866 5867 fc = le_to_host16(hdr->frame_control); 5868 5869 os_memset(&event, 0, sizeof(event)); 5870 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 5871 event.rx_from_unknown.addr = hdr->addr2; 5872 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 5873 (WLAN_FC_FROMDS | WLAN_FC_TODS); 5874 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 5875} 5876 5877 5878static void handle_frame(struct wpa_driver_nl80211_data *drv, 5879 u8 *buf, size_t len, int datarate, int ssi_signal) 5880{ 5881 struct ieee80211_hdr *hdr; 5882 u16 fc; 5883 union wpa_event_data event; 5884 5885 hdr = (struct ieee80211_hdr *) buf; 5886 fc = le_to_host16(hdr->frame_control); 5887 5888 switch (WLAN_FC_GET_TYPE(fc)) { 5889 case WLAN_FC_TYPE_MGMT: 5890 os_memset(&event, 0, sizeof(event)); 5891 event.rx_mgmt.frame = buf; 5892 event.rx_mgmt.frame_len = len; 5893 event.rx_mgmt.datarate = datarate; 5894 event.rx_mgmt.ssi_signal = ssi_signal; 5895 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 5896 break; 5897 case WLAN_FC_TYPE_CTRL: 5898 /* can only get here with PS-Poll frames */ 5899 wpa_printf(MSG_DEBUG, "CTRL"); 5900 from_unknown_sta(drv, buf, len); 5901 break; 5902 case WLAN_FC_TYPE_DATA: 5903 from_unknown_sta(drv, buf, len); 5904 break; 5905 } 5906} 5907 5908 5909static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 5910{ 5911 struct wpa_driver_nl80211_data *drv = eloop_ctx; 5912 int len; 5913 unsigned char buf[3000]; 5914 struct ieee80211_radiotap_iterator iter; 5915 int ret; 5916 int datarate = 0, ssi_signal = 0; 5917 int injected = 0, failed = 0, rxflags = 0; 5918 5919 len = recv(sock, buf, sizeof(buf), 0); 5920 if (len < 0) { 5921 perror("recv"); 5922 return; 5923 } 5924 5925 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 5926 printf("received invalid radiotap frame\n"); 5927 return; 5928 } 5929 5930 while (1) { 5931 ret = ieee80211_radiotap_iterator_next(&iter); 5932 if (ret == -ENOENT) 5933 break; 5934 if (ret) { 5935 printf("received invalid radiotap frame (%d)\n", ret); 5936 return; 5937 } 5938 switch (iter.this_arg_index) { 5939 case IEEE80211_RADIOTAP_FLAGS: 5940 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 5941 len -= 4; 5942 break; 5943 case IEEE80211_RADIOTAP_RX_FLAGS: 5944 rxflags = 1; 5945 break; 5946 case IEEE80211_RADIOTAP_TX_FLAGS: 5947 injected = 1; 5948 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 5949 IEEE80211_RADIOTAP_F_TX_FAIL; 5950 break; 5951 case IEEE80211_RADIOTAP_DATA_RETRIES: 5952 break; 5953 case IEEE80211_RADIOTAP_CHANNEL: 5954 /* TODO: convert from freq/flags to channel number */ 5955 break; 5956 case IEEE80211_RADIOTAP_RATE: 5957 datarate = *iter.this_arg * 5; 5958 break; 5959 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 5960 ssi_signal = (s8) *iter.this_arg; 5961 break; 5962 } 5963 } 5964 5965 if (rxflags && injected) 5966 return; 5967 5968 if (!injected) 5969 handle_frame(drv, buf + iter.max_length, 5970 len - iter.max_length, datarate, ssi_signal); 5971 else 5972 handle_tx_callback(drv->ctx, buf + iter.max_length, 5973 len - iter.max_length, !failed); 5974} 5975 5976 5977/* 5978 * we post-process the filter code later and rewrite 5979 * this to the offset to the last instruction 5980 */ 5981#define PASS 0xFF 5982#define FAIL 0xFE 5983 5984static struct sock_filter msock_filter_insns[] = { 5985 /* 5986 * do a little-endian load of the radiotap length field 5987 */ 5988 /* load lower byte into A */ 5989 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 5990 /* put it into X (== index register) */ 5991 BPF_STMT(BPF_MISC| BPF_TAX, 0), 5992 /* load upper byte into A */ 5993 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 5994 /* left-shift it by 8 */ 5995 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 5996 /* or with X */ 5997 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 5998 /* put result into X */ 5999 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6000 6001 /* 6002 * Allow management frames through, this also gives us those 6003 * management frames that we sent ourselves with status 6004 */ 6005 /* load the lower byte of the IEEE 802.11 frame control field */ 6006 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6007 /* mask off frame type and version */ 6008 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6009 /* accept frame if it's both 0, fall through otherwise */ 6010 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6011 6012 /* 6013 * TODO: add a bit to radiotap RX flags that indicates 6014 * that the sending station is not associated, then 6015 * add a filter here that filters on our DA and that flag 6016 * to allow us to deauth frames to that bad station. 6017 * 6018 * For now allow all To DS data frames through. 6019 */ 6020 /* load the IEEE 802.11 frame control field */ 6021 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6022 /* mask off frame type, version and DS status */ 6023 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6024 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6025 */ 6026 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6027 6028#if 0 6029 /* 6030 * drop non-data frames 6031 */ 6032 /* load the lower byte of the frame control field */ 6033 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6034 /* mask off QoS bit */ 6035 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6036 /* drop non-data frames */ 6037 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6038#endif 6039 /* load the upper byte of the frame control field */ 6040 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6041 /* mask off toDS/fromDS */ 6042 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6043 /* accept WDS frames */ 6044 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6045 6046 /* 6047 * add header length to index 6048 */ 6049 /* load the lower byte of the frame control field */ 6050 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6051 /* mask off QoS bit */ 6052 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6053 /* right shift it by 6 to give 0 or 2 */ 6054 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6055 /* add data frame header length */ 6056 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6057 /* add index, was start of 802.11 header */ 6058 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6059 /* move to index, now start of LL header */ 6060 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6061 6062 /* 6063 * Accept empty data frames, we use those for 6064 * polling activity. 6065 */ 6066 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6067 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6068 6069 /* 6070 * Accept EAPOL frames 6071 */ 6072 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6073 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6074 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6075 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6076 6077 /* keep these last two statements or change the code below */ 6078 /* return 0 == "DROP" */ 6079 BPF_STMT(BPF_RET | BPF_K, 0), 6080 /* return ~0 == "keep all" */ 6081 BPF_STMT(BPF_RET | BPF_K, ~0), 6082}; 6083 6084static struct sock_fprog msock_filter = { 6085 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6086 .filter = msock_filter_insns, 6087}; 6088 6089 6090static int add_monitor_filter(int s) 6091{ 6092 int idx; 6093 6094 /* rewrite all PASS/FAIL jump offsets */ 6095 for (idx = 0; idx < msock_filter.len; idx++) { 6096 struct sock_filter *insn = &msock_filter_insns[idx]; 6097 6098 if (BPF_CLASS(insn->code) == BPF_JMP) { 6099 if (insn->code == (BPF_JMP|BPF_JA)) { 6100 if (insn->k == PASS) 6101 insn->k = msock_filter.len - idx - 2; 6102 else if (insn->k == FAIL) 6103 insn->k = msock_filter.len - idx - 3; 6104 } 6105 6106 if (insn->jt == PASS) 6107 insn->jt = msock_filter.len - idx - 2; 6108 else if (insn->jt == FAIL) 6109 insn->jt = msock_filter.len - idx - 3; 6110 6111 if (insn->jf == PASS) 6112 insn->jf = msock_filter.len - idx - 2; 6113 else if (insn->jf == FAIL) 6114 insn->jf = msock_filter.len - idx - 3; 6115 } 6116 } 6117 6118 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6119 &msock_filter, sizeof(msock_filter))) { 6120 perror("SO_ATTACH_FILTER"); 6121 return -1; 6122 } 6123 6124 return 0; 6125} 6126 6127 6128static void nl80211_remove_monitor_interface( 6129 struct wpa_driver_nl80211_data *drv) 6130{ 6131 drv->monitor_refcount--; 6132 if (drv->monitor_refcount > 0) 6133 return; 6134 6135 if (drv->monitor_ifidx >= 0) { 6136 nl80211_remove_iface(drv, drv->monitor_ifidx); 6137 drv->monitor_ifidx = -1; 6138 } 6139 if (drv->monitor_sock >= 0) { 6140 eloop_unregister_read_sock(drv->monitor_sock); 6141 close(drv->monitor_sock); 6142 drv->monitor_sock = -1; 6143 } 6144} 6145 6146 6147static int 6148nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6149{ 6150 char buf[IFNAMSIZ]; 6151 struct sockaddr_ll ll; 6152 int optval; 6153 socklen_t optlen; 6154 6155 if (drv->monitor_ifidx >= 0) { 6156 drv->monitor_refcount++; 6157 return 0; 6158 } 6159 6160 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6161 /* 6162 * P2P interface name is of the format p2p-%s-%d. For monitor 6163 * interface name corresponding to P2P GO, replace "p2p-" with 6164 * "mon-" to retain the same interface name length and to 6165 * indicate that it is a monitor interface. 6166 */ 6167 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6168 } else { 6169 /* Non-P2P interface with AP functionality. */ 6170 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6171 } 6172 6173 buf[IFNAMSIZ - 1] = '\0'; 6174 6175 drv->monitor_ifidx = 6176 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6177 0); 6178 6179 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6180 /* 6181 * This is backward compatibility for a few versions of 6182 * the kernel only that didn't advertise the right 6183 * attributes for the only driver that then supported 6184 * AP mode w/o monitor -- ath6kl. 6185 */ 6186 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6187 "monitor interface type - try to run without it"); 6188 drv->device_ap_sme = 1; 6189 } 6190 6191 if (drv->monitor_ifidx < 0) 6192 return -1; 6193 6194 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6195 goto error; 6196 6197 memset(&ll, 0, sizeof(ll)); 6198 ll.sll_family = AF_PACKET; 6199 ll.sll_ifindex = drv->monitor_ifidx; 6200 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6201 if (drv->monitor_sock < 0) { 6202 perror("socket[PF_PACKET,SOCK_RAW]"); 6203 goto error; 6204 } 6205 6206 if (add_monitor_filter(drv->monitor_sock)) { 6207 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6208 "interface; do filtering in user space"); 6209 /* This works, but will cost in performance. */ 6210 } 6211 6212 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6213 perror("monitor socket bind"); 6214 goto error; 6215 } 6216 6217 optlen = sizeof(optval); 6218 optval = 20; 6219 if (setsockopt 6220 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6221 perror("Failed to set socket priority"); 6222 goto error; 6223 } 6224 6225 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6226 drv, NULL)) { 6227 printf("Could not register monitor read socket\n"); 6228 goto error; 6229 } 6230 6231 return 0; 6232 error: 6233 nl80211_remove_monitor_interface(drv); 6234 return -1; 6235} 6236 6237 6238static int nl80211_setup_ap(struct i802_bss *bss) 6239{ 6240 struct wpa_driver_nl80211_data *drv = bss->drv; 6241 6242 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6243 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6244 6245 /* 6246 * Disable Probe Request reporting unless we need it in this way for 6247 * devices that include the AP SME, in the other case (unless using 6248 * monitor iface) we'll get it through the nl_mgmt socket instead. 6249 */ 6250 if (!drv->device_ap_sme) 6251 wpa_driver_nl80211_probe_req_report(bss, 0); 6252 6253 if (!drv->device_ap_sme && !drv->use_monitor) 6254 if (nl80211_mgmt_subscribe_ap(bss)) 6255 return -1; 6256 6257 if (drv->device_ap_sme && !drv->use_monitor) 6258 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6259 return -1; 6260 6261 if (!drv->device_ap_sme && drv->use_monitor && 6262 nl80211_create_monitor_interface(drv) && 6263 !drv->device_ap_sme) 6264 return -1; 6265 6266#ifdef ANDROID_P2P 6267 if (drv->device_ap_sme && drv->use_monitor) 6268 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6269 return -1; 6270 6271 if (drv->use_monitor && 6272 nl80211_create_monitor_interface(drv)) 6273 return -1; 6274#endif 6275 6276 if (drv->device_ap_sme && 6277 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6278 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6279 "Probe Request frame reporting in AP mode"); 6280 /* Try to survive without this */ 6281 } 6282 6283 return 0; 6284} 6285 6286 6287static void nl80211_teardown_ap(struct i802_bss *bss) 6288{ 6289 struct wpa_driver_nl80211_data *drv = bss->drv; 6290 6291 if (drv->device_ap_sme) { 6292 wpa_driver_nl80211_probe_req_report(bss, 0); 6293 if (!drv->use_monitor) 6294 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6295 } else if (drv->use_monitor) 6296 nl80211_remove_monitor_interface(drv); 6297 else 6298 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6299 6300 bss->beacon_set = 0; 6301} 6302 6303 6304static int nl80211_send_eapol_data(struct i802_bss *bss, 6305 const u8 *addr, const u8 *data, 6306 size_t data_len) 6307{ 6308 struct sockaddr_ll ll; 6309 int ret; 6310 6311 if (bss->drv->eapol_tx_sock < 0) { 6312 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6313 return -1; 6314 } 6315 6316 os_memset(&ll, 0, sizeof(ll)); 6317 ll.sll_family = AF_PACKET; 6318 ll.sll_ifindex = bss->ifindex; 6319 ll.sll_protocol = htons(ETH_P_PAE); 6320 ll.sll_halen = ETH_ALEN; 6321 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6322 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6323 (struct sockaddr *) &ll, sizeof(ll)); 6324 if (ret < 0) 6325 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6326 strerror(errno)); 6327 6328 return ret; 6329} 6330 6331 6332static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6333 6334static int wpa_driver_nl80211_hapd_send_eapol( 6335 void *priv, const u8 *addr, const u8 *data, 6336 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6337{ 6338 struct i802_bss *bss = priv; 6339 struct wpa_driver_nl80211_data *drv = bss->drv; 6340 struct ieee80211_hdr *hdr; 6341 size_t len; 6342 u8 *pos; 6343 int res; 6344 int qos = flags & WPA_STA_WMM; 6345#ifndef ANDROID_P2P 6346 if (drv->device_ap_sme || !drv->use_monitor) 6347#else 6348 if (drv->device_ap_sme && !drv->use_monitor) 6349#endif 6350 return nl80211_send_eapol_data(bss, addr, data, data_len); 6351 6352 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6353 data_len; 6354 hdr = os_zalloc(len); 6355 if (hdr == NULL) { 6356 printf("malloc() failed for i802_send_data(len=%lu)\n", 6357 (unsigned long) len); 6358 return -1; 6359 } 6360 6361 hdr->frame_control = 6362 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6363 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6364 if (encrypt) 6365 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6366 if (qos) { 6367 hdr->frame_control |= 6368 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6369 } 6370 6371 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6372 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6373 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6374 pos = (u8 *) (hdr + 1); 6375 6376 if (qos) { 6377 /* add an empty QoS header if needed */ 6378 pos[0] = 0; 6379 pos[1] = 0; 6380 pos += 2; 6381 } 6382 6383 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6384 pos += sizeof(rfc1042_header); 6385 WPA_PUT_BE16(pos, ETH_P_PAE); 6386 pos += 2; 6387 memcpy(pos, data, data_len); 6388 6389 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6390 0, 0, 0, 0); 6391 if (res < 0) { 6392 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6393 "failed: %d (%s)", 6394 (unsigned long) len, errno, strerror(errno)); 6395 } 6396 os_free(hdr); 6397 6398 return res; 6399} 6400 6401 6402static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6403 int total_flags, 6404 int flags_or, int flags_and) 6405{ 6406 struct i802_bss *bss = priv; 6407 struct wpa_driver_nl80211_data *drv = bss->drv; 6408 struct nl_msg *msg, *flags = NULL; 6409 struct nl80211_sta_flag_update upd; 6410 6411 msg = nlmsg_alloc(); 6412 if (!msg) 6413 return -ENOMEM; 6414 6415 flags = nlmsg_alloc(); 6416 if (!flags) { 6417 nlmsg_free(msg); 6418 return -ENOMEM; 6419 } 6420 6421 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6422 6423 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6424 if_nametoindex(bss->ifname)); 6425 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6426 6427 /* 6428 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6429 * can be removed eventually. 6430 */ 6431 if (total_flags & WPA_STA_AUTHORIZED) 6432 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED); 6433 6434 if (total_flags & WPA_STA_WMM) 6435 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME); 6436 6437 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6438 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE); 6439 6440 if (total_flags & WPA_STA_MFP) 6441 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP); 6442 6443 if (total_flags & WPA_STA_TDLS_PEER) 6444 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER); 6445 6446 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags)) 6447 goto nla_put_failure; 6448 6449 os_memset(&upd, 0, sizeof(upd)); 6450 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6451 upd.set = sta_flags_nl80211(flags_or); 6452 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6453 6454 nlmsg_free(flags); 6455 6456 return send_and_recv_msgs(drv, msg, NULL, NULL); 6457 nla_put_failure: 6458 nlmsg_free(msg); 6459 nlmsg_free(flags); 6460 return -ENOBUFS; 6461} 6462 6463 6464static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6465 struct wpa_driver_associate_params *params) 6466{ 6467 enum nl80211_iftype nlmode; 6468 6469 if (params->p2p) { 6470 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6471 "group (GO)"); 6472 nlmode = NL80211_IFTYPE_P2P_GO; 6473 } else 6474 nlmode = NL80211_IFTYPE_AP; 6475 6476 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) || 6477 wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) { 6478 nl80211_remove_monitor_interface(drv); 6479 return -1; 6480 } 6481 6482 return 0; 6483} 6484 6485 6486static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 6487{ 6488 struct nl_msg *msg; 6489 int ret = -1; 6490 6491 msg = nlmsg_alloc(); 6492 if (!msg) 6493 return -1; 6494 6495 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 6496 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6497 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6498 msg = NULL; 6499 if (ret) { 6500 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 6501 "(%s)", ret, strerror(-ret)); 6502 goto nla_put_failure; 6503 } 6504 6505 ret = 0; 6506 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 6507 6508nla_put_failure: 6509 nlmsg_free(msg); 6510 return ret; 6511} 6512 6513 6514static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 6515 struct wpa_driver_associate_params *params) 6516{ 6517 struct nl_msg *msg; 6518 int ret = -1; 6519 int count = 0; 6520 6521 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 6522 6523 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 6524 NL80211_IFTYPE_ADHOC)) { 6525 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 6526 "IBSS mode"); 6527 return -1; 6528 } 6529 6530retry: 6531 msg = nlmsg_alloc(); 6532 if (!msg) 6533 return -1; 6534 6535 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 6536 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6537 6538 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 6539 goto nla_put_failure; 6540 6541 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6542 params->ssid, params->ssid_len); 6543 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6544 params->ssid); 6545 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6546 drv->ssid_len = params->ssid_len; 6547 6548 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6549 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6550 6551 ret = nl80211_set_conn_keys(params, msg); 6552 if (ret) 6553 goto nla_put_failure; 6554 6555 if (params->bssid && params->fixed_bssid) { 6556 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 6557 MAC2STR(params->bssid)); 6558 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6559 } 6560 6561 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6562 params->key_mgmt_suite == KEY_MGMT_PSK || 6563 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 6564 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 6565 wpa_printf(MSG_DEBUG, " * control port"); 6566 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 6567 } 6568 6569 if (params->wpa_ie) { 6570 wpa_hexdump(MSG_DEBUG, 6571 " * Extra IEs for Beacon/Probe Response frames", 6572 params->wpa_ie, params->wpa_ie_len); 6573 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6574 params->wpa_ie); 6575 } 6576 6577 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6578 msg = NULL; 6579 if (ret) { 6580 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 6581 ret, strerror(-ret)); 6582 count++; 6583 if (ret == -EALREADY && count == 1) { 6584 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 6585 "forced leave"); 6586 nl80211_leave_ibss(drv); 6587 nlmsg_free(msg); 6588 goto retry; 6589 } 6590 6591 goto nla_put_failure; 6592 } 6593 ret = 0; 6594 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 6595 6596nla_put_failure: 6597 nlmsg_free(msg); 6598 return ret; 6599} 6600 6601 6602static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv, 6603 u8 *bssid) 6604{ 6605 struct nl_msg *msg; 6606 int ret; 6607 struct nl80211_bss_info_arg arg; 6608 6609 os_memset(&arg, 0, sizeof(arg)); 6610 msg = nlmsg_alloc(); 6611 if (!msg) 6612 goto nla_put_failure; 6613 6614 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 6615 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6616 6617 arg.drv = drv; 6618 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 6619 msg = NULL; 6620 if (ret == 0) { 6621 if (is_zero_ether_addr(arg.assoc_bssid)) 6622 return -ENOTCONN; 6623 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN); 6624 return 0; 6625 } 6626 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 6627 "(%s)", ret, strerror(-ret)); 6628nla_put_failure: 6629 nlmsg_free(msg); 6630 return drv->assoc_freq; 6631} 6632 6633 6634static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 6635 const u8 *bssid) 6636{ 6637 u8 addr[ETH_ALEN]; 6638 6639 if (bssid == NULL) { 6640 int res = nl80211_get_assoc_bssid(drv, addr); 6641 if (res) 6642 return res; 6643 bssid = addr; 6644 } 6645 6646 return wpa_driver_nl80211_disconnect(drv, bssid, 6647 WLAN_REASON_PREV_AUTH_NOT_VALID); 6648} 6649 6650 6651static int wpa_driver_nl80211_connect( 6652 struct wpa_driver_nl80211_data *drv, 6653 struct wpa_driver_associate_params *params) 6654{ 6655 struct nl_msg *msg; 6656 enum nl80211_auth_type type; 6657 int ret = 0; 6658 int algs; 6659 6660 msg = nlmsg_alloc(); 6661 if (!msg) 6662 return -1; 6663 6664 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 6665 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 6666 6667 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6668 if (params->bssid) { 6669 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 6670 MAC2STR(params->bssid)); 6671 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6672 } 6673 if (params->freq) { 6674 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6675 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6676 } 6677 if (params->bg_scan_period >= 0) { 6678 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 6679 params->bg_scan_period); 6680 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 6681 params->bg_scan_period); 6682 } 6683 if (params->ssid) { 6684 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6685 params->ssid, params->ssid_len); 6686 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6687 params->ssid); 6688 if (params->ssid_len > sizeof(drv->ssid)) 6689 goto nla_put_failure; 6690 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6691 drv->ssid_len = params->ssid_len; 6692 } 6693 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 6694 if (params->wpa_ie) 6695 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6696 params->wpa_ie); 6697 6698 algs = 0; 6699 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6700 algs++; 6701 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6702 algs++; 6703 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6704 algs++; 6705 if (algs > 1) { 6706 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 6707 "selection"); 6708 goto skip_auth_type; 6709 } 6710 6711 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6712 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 6713 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6714 type = NL80211_AUTHTYPE_SHARED_KEY; 6715 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6716 type = NL80211_AUTHTYPE_NETWORK_EAP; 6717 else if (params->auth_alg & WPA_AUTH_ALG_FT) 6718 type = NL80211_AUTHTYPE_FT; 6719 else 6720 goto nla_put_failure; 6721 6722 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 6723 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 6724 6725skip_auth_type: 6726 if (params->wpa_proto) { 6727 enum nl80211_wpa_versions ver = 0; 6728 6729 if (params->wpa_proto & WPA_PROTO_WPA) 6730 ver |= NL80211_WPA_VERSION_1; 6731 if (params->wpa_proto & WPA_PROTO_RSN) 6732 ver |= NL80211_WPA_VERSION_2; 6733 6734 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 6735 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 6736 } 6737 6738 if (params->pairwise_suite != CIPHER_NONE) { 6739 int cipher; 6740 6741 switch (params->pairwise_suite) { 6742 case CIPHER_WEP40: 6743 cipher = WLAN_CIPHER_SUITE_WEP40; 6744 break; 6745 case CIPHER_WEP104: 6746 cipher = WLAN_CIPHER_SUITE_WEP104; 6747 break; 6748 case CIPHER_CCMP: 6749 cipher = WLAN_CIPHER_SUITE_CCMP; 6750 break; 6751 case CIPHER_TKIP: 6752 default: 6753 cipher = WLAN_CIPHER_SUITE_TKIP; 6754 break; 6755 } 6756 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 6757 } 6758 6759 if (params->group_suite != CIPHER_NONE) { 6760 int cipher; 6761 6762 switch (params->group_suite) { 6763 case CIPHER_WEP40: 6764 cipher = WLAN_CIPHER_SUITE_WEP40; 6765 break; 6766 case CIPHER_WEP104: 6767 cipher = WLAN_CIPHER_SUITE_WEP104; 6768 break; 6769 case CIPHER_CCMP: 6770 cipher = WLAN_CIPHER_SUITE_CCMP; 6771 break; 6772 case CIPHER_TKIP: 6773 default: 6774 cipher = WLAN_CIPHER_SUITE_TKIP; 6775 break; 6776 } 6777 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 6778 } 6779 6780 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6781 params->key_mgmt_suite == KEY_MGMT_PSK) { 6782 int mgmt = WLAN_AKM_SUITE_PSK; 6783 6784 switch (params->key_mgmt_suite) { 6785 case KEY_MGMT_802_1X: 6786 mgmt = WLAN_AKM_SUITE_8021X; 6787 break; 6788 case KEY_MGMT_PSK: 6789 default: 6790 mgmt = WLAN_AKM_SUITE_PSK; 6791 break; 6792 } 6793 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 6794 } 6795 6796 if (params->disable_ht) 6797 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 6798 6799 if (params->htcaps && params->htcaps_mask) { 6800 int sz = sizeof(struct ieee80211_ht_capabilities); 6801 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 6802 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 6803 params->htcaps_mask); 6804 } 6805 6806 ret = nl80211_set_conn_keys(params, msg); 6807 if (ret) 6808 goto nla_put_failure; 6809 6810 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6811 msg = NULL; 6812 if (ret) { 6813 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 6814 "(%s)", ret, strerror(-ret)); 6815 /* 6816 * cfg80211 does not currently accept new connection if we are 6817 * already connected. As a workaround, force disconnection and 6818 * try again once the driver indicates it completed 6819 * disconnection. 6820 */ 6821 if (ret == -EALREADY) 6822 nl80211_disconnect(drv, params->bssid); 6823 goto nla_put_failure; 6824 } 6825 ret = 0; 6826 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 6827 6828nla_put_failure: 6829 nlmsg_free(msg); 6830 return ret; 6831 6832} 6833 6834 6835static int wpa_driver_nl80211_associate( 6836 void *priv, struct wpa_driver_associate_params *params) 6837{ 6838 struct i802_bss *bss = priv; 6839 struct wpa_driver_nl80211_data *drv = bss->drv; 6840 int ret = -1; 6841 struct nl_msg *msg; 6842 6843 if (params->mode == IEEE80211_MODE_AP) 6844 return wpa_driver_nl80211_ap(drv, params); 6845 6846 if (params->mode == IEEE80211_MODE_IBSS) 6847 return wpa_driver_nl80211_ibss(drv, params); 6848 6849 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 6850 enum nl80211_iftype nlmode = params->p2p ? 6851 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 6852 6853 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 6854 return -1; 6855 return wpa_driver_nl80211_connect(drv, params); 6856 } 6857 6858 drv->associated = 0; 6859 6860 msg = nlmsg_alloc(); 6861 if (!msg) 6862 return -1; 6863 6864 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 6865 drv->ifindex); 6866 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 6867 6868 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6869 if (params->bssid) { 6870 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 6871 MAC2STR(params->bssid)); 6872 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6873 } 6874 if (params->freq) { 6875 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6876 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6877 drv->assoc_freq = params->freq; 6878 } else 6879 drv->assoc_freq = 0; 6880 if (params->bg_scan_period >= 0) { 6881 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 6882 params->bg_scan_period); 6883 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 6884 params->bg_scan_period); 6885 } 6886 if (params->ssid) { 6887 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6888 params->ssid, params->ssid_len); 6889 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6890 params->ssid); 6891 if (params->ssid_len > sizeof(drv->ssid)) 6892 goto nla_put_failure; 6893 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6894 drv->ssid_len = params->ssid_len; 6895 } 6896 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 6897 if (params->wpa_ie) 6898 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6899 params->wpa_ie); 6900 6901 if (params->pairwise_suite != CIPHER_NONE) { 6902 int cipher; 6903 6904 switch (params->pairwise_suite) { 6905 case CIPHER_WEP40: 6906 cipher = WLAN_CIPHER_SUITE_WEP40; 6907 break; 6908 case CIPHER_WEP104: 6909 cipher = WLAN_CIPHER_SUITE_WEP104; 6910 break; 6911 case CIPHER_CCMP: 6912 cipher = WLAN_CIPHER_SUITE_CCMP; 6913 break; 6914 case CIPHER_TKIP: 6915 default: 6916 cipher = WLAN_CIPHER_SUITE_TKIP; 6917 break; 6918 } 6919 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 6920 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 6921 } 6922 6923 if (params->group_suite != CIPHER_NONE) { 6924 int cipher; 6925 6926 switch (params->group_suite) { 6927 case CIPHER_WEP40: 6928 cipher = WLAN_CIPHER_SUITE_WEP40; 6929 break; 6930 case CIPHER_WEP104: 6931 cipher = WLAN_CIPHER_SUITE_WEP104; 6932 break; 6933 case CIPHER_CCMP: 6934 cipher = WLAN_CIPHER_SUITE_CCMP; 6935 break; 6936 case CIPHER_TKIP: 6937 default: 6938 cipher = WLAN_CIPHER_SUITE_TKIP; 6939 break; 6940 } 6941 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 6942 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 6943 } 6944 6945#ifdef CONFIG_IEEE80211W 6946 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 6947 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 6948#endif /* CONFIG_IEEE80211W */ 6949 6950 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 6951 6952 if (params->prev_bssid) { 6953 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 6954 MAC2STR(params->prev_bssid)); 6955 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 6956 params->prev_bssid); 6957 } 6958 6959 if (params->disable_ht) 6960 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 6961 6962 if (params->htcaps && params->htcaps_mask) { 6963 int sz = sizeof(struct ieee80211_ht_capabilities); 6964 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 6965 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 6966 params->htcaps_mask); 6967 } 6968 6969 if (params->p2p) 6970 wpa_printf(MSG_DEBUG, " * P2P group"); 6971 6972 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6973 msg = NULL; 6974 if (ret) { 6975 wpa_dbg(drv->ctx, MSG_DEBUG, 6976 "nl80211: MLME command failed (assoc): ret=%d (%s)", 6977 ret, strerror(-ret)); 6978 nl80211_dump_scan(drv); 6979 goto nla_put_failure; 6980 } 6981 ret = 0; 6982 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 6983 "successfully"); 6984 6985nla_put_failure: 6986 nlmsg_free(msg); 6987 return ret; 6988} 6989 6990 6991static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 6992 int ifindex, enum nl80211_iftype mode) 6993{ 6994 struct nl_msg *msg; 6995 int ret = -ENOBUFS; 6996 6997 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 6998 ifindex, mode, nl80211_iftype_str(mode)); 6999 7000 msg = nlmsg_alloc(); 7001 if (!msg) 7002 return -ENOMEM; 7003 7004 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7005 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7006 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7007 7008 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7009 msg = NULL; 7010 if (!ret) 7011 return 0; 7012nla_put_failure: 7013 nlmsg_free(msg); 7014 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7015 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7016 return ret; 7017} 7018 7019 7020static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7021 enum nl80211_iftype nlmode) 7022{ 7023 struct wpa_driver_nl80211_data *drv = bss->drv; 7024 int ret = -1; 7025 int i; 7026 int was_ap = is_ap_interface(drv->nlmode); 7027 int res; 7028 7029 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7030 if (res == 0) { 7031 drv->nlmode = nlmode; 7032 ret = 0; 7033 goto done; 7034 } 7035 7036 if (res == -ENODEV) 7037 return -1; 7038 7039 if (nlmode == drv->nlmode) { 7040 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7041 "requested mode - ignore error"); 7042 ret = 0; 7043 goto done; /* Already in the requested mode */ 7044 } 7045 7046 /* mac80211 doesn't allow mode changes while the device is up, so 7047 * take the device down, try to set the mode again, and bring the 7048 * device back up. 7049 */ 7050 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7051 "interface down"); 7052 for (i = 0; i < 10; i++) { 7053 res = linux_set_iface_flags(drv->global->ioctl_sock, 7054 bss->ifname, 0); 7055 if (res == -EACCES || res == -ENODEV) 7056 break; 7057 if (res == 0) { 7058 /* Try to set the mode again while the interface is 7059 * down */ 7060 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7061 if (ret == -EACCES) 7062 break; 7063 res = linux_set_iface_flags(drv->global->ioctl_sock, 7064 bss->ifname, 1); 7065 if (res && !ret) 7066 ret = -1; 7067 else if (ret != -EBUSY) 7068 break; 7069 } else 7070 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7071 "interface down"); 7072 os_sleep(0, 100000); 7073 } 7074 7075 if (!ret) { 7076 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7077 "interface is down"); 7078 drv->nlmode = nlmode; 7079 drv->ignore_if_down_event = 1; 7080 } 7081 7082done: 7083 if (ret) { 7084 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7085 "from %d failed", nlmode, drv->nlmode); 7086 return ret; 7087 } 7088 7089 if (is_ap_interface(nlmode)) { 7090 nl80211_mgmt_unsubscribe(bss, "start AP"); 7091 /* Setup additional AP mode functionality if needed */ 7092 if (nl80211_setup_ap(bss)) 7093 return -1; 7094 } else if (was_ap) { 7095 /* Remove additional AP mode functionality */ 7096 nl80211_teardown_ap(bss); 7097 } else { 7098 nl80211_mgmt_unsubscribe(bss, "mode change"); 7099 } 7100 7101 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7102 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7103 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7104 "frame processing - ignore for now"); 7105 7106 return 0; 7107} 7108 7109 7110static int wpa_driver_nl80211_get_capa(void *priv, 7111 struct wpa_driver_capa *capa) 7112{ 7113 struct i802_bss *bss = priv; 7114 struct wpa_driver_nl80211_data *drv = bss->drv; 7115 if (!drv->has_capability) 7116 return -1; 7117 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7118 return 0; 7119} 7120 7121 7122static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7123{ 7124 struct i802_bss *bss = priv; 7125 struct wpa_driver_nl80211_data *drv = bss->drv; 7126 7127 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7128 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7129 drv->operstate = state; 7130 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7131 state ? IF_OPER_UP : IF_OPER_DORMANT); 7132} 7133 7134 7135static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7136{ 7137 struct i802_bss *bss = priv; 7138 struct wpa_driver_nl80211_data *drv = bss->drv; 7139 struct nl_msg *msg; 7140 struct nl80211_sta_flag_update upd; 7141 7142 msg = nlmsg_alloc(); 7143 if (!msg) 7144 return -ENOMEM; 7145 7146 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7147 7148 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7149 if_nametoindex(bss->ifname)); 7150 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7151 7152 os_memset(&upd, 0, sizeof(upd)); 7153 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7154 if (authorized) 7155 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7156 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7157 7158 return send_and_recv_msgs(drv, msg, NULL, NULL); 7159 nla_put_failure: 7160 nlmsg_free(msg); 7161 return -ENOBUFS; 7162} 7163 7164 7165/* Set kernel driver on given frequency (MHz) */ 7166static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7167{ 7168 struct i802_bss *bss = priv; 7169 return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled, 7170 freq->sec_channel_offset); 7171} 7172 7173 7174#if defined(HOSTAPD) || defined(CONFIG_AP) 7175 7176static inline int min_int(int a, int b) 7177{ 7178 if (a < b) 7179 return a; 7180 return b; 7181} 7182 7183 7184static int get_key_handler(struct nl_msg *msg, void *arg) 7185{ 7186 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7187 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7188 7189 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7190 genlmsg_attrlen(gnlh, 0), NULL); 7191 7192 /* 7193 * TODO: validate the key index and mac address! 7194 * Otherwise, there's a race condition as soon as 7195 * the kernel starts sending key notifications. 7196 */ 7197 7198 if (tb[NL80211_ATTR_KEY_SEQ]) 7199 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7200 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7201 return NL_SKIP; 7202} 7203 7204 7205static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7206 int idx, u8 *seq) 7207{ 7208 struct i802_bss *bss = priv; 7209 struct wpa_driver_nl80211_data *drv = bss->drv; 7210 struct nl_msg *msg; 7211 7212 msg = nlmsg_alloc(); 7213 if (!msg) 7214 return -ENOMEM; 7215 7216 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7217 7218 if (addr) 7219 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7220 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7221 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7222 7223 memset(seq, 0, 6); 7224 7225 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7226 nla_put_failure: 7227 nlmsg_free(msg); 7228 return -ENOBUFS; 7229} 7230 7231 7232static int i802_set_rts(void *priv, int rts) 7233{ 7234 struct i802_bss *bss = priv; 7235 struct wpa_driver_nl80211_data *drv = bss->drv; 7236 struct nl_msg *msg; 7237 int ret = -ENOBUFS; 7238 u32 val; 7239 7240 msg = nlmsg_alloc(); 7241 if (!msg) 7242 return -ENOMEM; 7243 7244 if (rts >= 2347) 7245 val = (u32) -1; 7246 else 7247 val = rts; 7248 7249 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7250 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7251 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7252 7253 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7254 msg = NULL; 7255 if (!ret) 7256 return 0; 7257nla_put_failure: 7258 nlmsg_free(msg); 7259 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7260 "%d (%s)", rts, ret, strerror(-ret)); 7261 return ret; 7262} 7263 7264 7265static int i802_set_frag(void *priv, int frag) 7266{ 7267 struct i802_bss *bss = priv; 7268 struct wpa_driver_nl80211_data *drv = bss->drv; 7269 struct nl_msg *msg; 7270 int ret = -ENOBUFS; 7271 u32 val; 7272 7273 msg = nlmsg_alloc(); 7274 if (!msg) 7275 return -ENOMEM; 7276 7277 if (frag >= 2346) 7278 val = (u32) -1; 7279 else 7280 val = frag; 7281 7282 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7283 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7284 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7285 7286 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7287 msg = NULL; 7288 if (!ret) 7289 return 0; 7290nla_put_failure: 7291 nlmsg_free(msg); 7292 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7293 "%d: %d (%s)", frag, ret, strerror(-ret)); 7294 return ret; 7295} 7296 7297 7298static int i802_flush(void *priv) 7299{ 7300 struct i802_bss *bss = priv; 7301 struct wpa_driver_nl80211_data *drv = bss->drv; 7302 struct nl_msg *msg; 7303 int res; 7304 7305 msg = nlmsg_alloc(); 7306 if (!msg) 7307 return -1; 7308 7309 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7310 7311 /* 7312 * XXX: FIX! this needs to flush all VLANs too 7313 */ 7314 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7315 if_nametoindex(bss->ifname)); 7316 7317 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7318 if (res) { 7319 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7320 "(%s)", res, strerror(-res)); 7321 } 7322 return res; 7323 nla_put_failure: 7324 nlmsg_free(msg); 7325 return -ENOBUFS; 7326} 7327 7328 7329static int get_sta_handler(struct nl_msg *msg, void *arg) 7330{ 7331 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7332 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7333 struct hostap_sta_driver_data *data = arg; 7334 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7335 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7336 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7337 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7338 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7339 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7340 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7341 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7342 }; 7343 7344 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7345 genlmsg_attrlen(gnlh, 0), NULL); 7346 7347 /* 7348 * TODO: validate the interface and mac address! 7349 * Otherwise, there's a race condition as soon as 7350 * the kernel starts sending station notifications. 7351 */ 7352 7353 if (!tb[NL80211_ATTR_STA_INFO]) { 7354 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7355 return NL_SKIP; 7356 } 7357 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7358 tb[NL80211_ATTR_STA_INFO], 7359 stats_policy)) { 7360 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7361 return NL_SKIP; 7362 } 7363 7364 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7365 data->inactive_msec = 7366 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7367 if (stats[NL80211_STA_INFO_RX_BYTES]) 7368 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7369 if (stats[NL80211_STA_INFO_TX_BYTES]) 7370 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7371 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7372 data->rx_packets = 7373 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7374 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7375 data->tx_packets = 7376 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7377 if (stats[NL80211_STA_INFO_TX_FAILED]) 7378 data->tx_retry_failed = 7379 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7380 7381 return NL_SKIP; 7382} 7383 7384static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data, 7385 const u8 *addr) 7386{ 7387 struct i802_bss *bss = priv; 7388 struct wpa_driver_nl80211_data *drv = bss->drv; 7389 struct nl_msg *msg; 7390 7391 os_memset(data, 0, sizeof(*data)); 7392 msg = nlmsg_alloc(); 7393 if (!msg) 7394 return -ENOMEM; 7395 7396 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7397 7398 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7399 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7400 7401 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7402 nla_put_failure: 7403 nlmsg_free(msg); 7404 return -ENOBUFS; 7405} 7406 7407 7408static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7409 int cw_min, int cw_max, int burst_time) 7410{ 7411 struct i802_bss *bss = priv; 7412 struct wpa_driver_nl80211_data *drv = bss->drv; 7413 struct nl_msg *msg; 7414 struct nlattr *txq, *params; 7415 7416 msg = nlmsg_alloc(); 7417 if (!msg) 7418 return -1; 7419 7420 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7421 7422 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7423 7424 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7425 if (!txq) 7426 goto nla_put_failure; 7427 7428 /* We are only sending parameters for a single TXQ at a time */ 7429 params = nla_nest_start(msg, 1); 7430 if (!params) 7431 goto nla_put_failure; 7432 7433 switch (queue) { 7434 case 0: 7435 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7436 break; 7437 case 1: 7438 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7439 break; 7440 case 2: 7441 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7442 break; 7443 case 3: 7444 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7445 break; 7446 } 7447 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 7448 * 32 usec, so need to convert the value here. */ 7449 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 7450 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 7451 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 7452 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 7453 7454 nla_nest_end(msg, params); 7455 7456 nla_nest_end(msg, txq); 7457 7458 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 7459 return 0; 7460 msg = NULL; 7461 nla_put_failure: 7462 nlmsg_free(msg); 7463 return -1; 7464} 7465 7466 7467static int i802_set_sta_vlan(void *priv, const u8 *addr, 7468 const char *ifname, int vlan_id) 7469{ 7470 struct i802_bss *bss = priv; 7471 struct wpa_driver_nl80211_data *drv = bss->drv; 7472 struct nl_msg *msg; 7473 int ret = -ENOBUFS; 7474 7475 msg = nlmsg_alloc(); 7476 if (!msg) 7477 return -ENOMEM; 7478 7479 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7480 7481 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7482 if_nametoindex(bss->ifname)); 7483 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7484 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 7485 if_nametoindex(ifname)); 7486 7487 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7488 msg = NULL; 7489 if (ret < 0) { 7490 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 7491 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 7492 MAC2STR(addr), ifname, vlan_id, ret, 7493 strerror(-ret)); 7494 } 7495 nla_put_failure: 7496 nlmsg_free(msg); 7497 return ret; 7498} 7499 7500 7501static int i802_get_inact_sec(void *priv, const u8 *addr) 7502{ 7503 struct hostap_sta_driver_data data; 7504 int ret; 7505 7506 data.inactive_msec = (unsigned long) -1; 7507 ret = i802_read_sta_data(priv, &data, addr); 7508 if (ret || data.inactive_msec == (unsigned long) -1) 7509 return -1; 7510 return data.inactive_msec / 1000; 7511} 7512 7513 7514static int i802_sta_clear_stats(void *priv, const u8 *addr) 7515{ 7516#if 0 7517 /* TODO */ 7518#endif 7519 return 0; 7520} 7521 7522 7523static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 7524 int reason) 7525{ 7526 struct i802_bss *bss = priv; 7527 struct wpa_driver_nl80211_data *drv = bss->drv; 7528 struct ieee80211_mgmt mgmt; 7529 7530 if (drv->device_ap_sme) 7531 return wpa_driver_nl80211_sta_remove(bss, addr); 7532 7533 memset(&mgmt, 0, sizeof(mgmt)); 7534 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7535 WLAN_FC_STYPE_DEAUTH); 7536 memcpy(mgmt.da, addr, ETH_ALEN); 7537 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7538 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7539 mgmt.u.deauth.reason_code = host_to_le16(reason); 7540 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7541 IEEE80211_HDRLEN + 7542 sizeof(mgmt.u.deauth), 0); 7543} 7544 7545 7546static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 7547 int reason) 7548{ 7549 struct i802_bss *bss = priv; 7550 struct wpa_driver_nl80211_data *drv = bss->drv; 7551 struct ieee80211_mgmt mgmt; 7552 7553 if (drv->device_ap_sme) 7554 return wpa_driver_nl80211_sta_remove(bss, addr); 7555 7556 memset(&mgmt, 0, sizeof(mgmt)); 7557 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7558 WLAN_FC_STYPE_DISASSOC); 7559 memcpy(mgmt.da, addr, ETH_ALEN); 7560 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7561 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7562 mgmt.u.disassoc.reason_code = host_to_le16(reason); 7563 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7564 IEEE80211_HDRLEN + 7565 sizeof(mgmt.u.disassoc), 0); 7566} 7567 7568#endif /* HOSTAPD || CONFIG_AP */ 7569 7570#ifdef HOSTAPD 7571 7572static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7573{ 7574 int i; 7575 int *old; 7576 7577 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 7578 ifidx); 7579 for (i = 0; i < drv->num_if_indices; i++) { 7580 if (drv->if_indices[i] == 0) { 7581 drv->if_indices[i] = ifidx; 7582 return; 7583 } 7584 } 7585 7586 if (drv->if_indices != drv->default_if_indices) 7587 old = drv->if_indices; 7588 else 7589 old = NULL; 7590 7591 drv->if_indices = os_realloc(old, 7592 sizeof(int) * (drv->num_if_indices + 1)); 7593 if (!drv->if_indices) { 7594 if (!old) 7595 drv->if_indices = drv->default_if_indices; 7596 else 7597 drv->if_indices = old; 7598 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 7599 "interfaces"); 7600 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 7601 return; 7602 } else if (!old) 7603 os_memcpy(drv->if_indices, drv->default_if_indices, 7604 sizeof(drv->default_if_indices)); 7605 drv->if_indices[drv->num_if_indices] = ifidx; 7606 drv->num_if_indices++; 7607} 7608 7609 7610static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7611{ 7612 int i; 7613 7614 for (i = 0; i < drv->num_if_indices; i++) { 7615 if (drv->if_indices[i] == ifidx) { 7616 drv->if_indices[i] = 0; 7617 break; 7618 } 7619 } 7620} 7621 7622 7623static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7624{ 7625 int i; 7626 7627 for (i = 0; i < drv->num_if_indices; i++) 7628 if (drv->if_indices[i] == ifidx) 7629 return 1; 7630 7631 return 0; 7632} 7633 7634 7635static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 7636 const char *bridge_ifname) 7637{ 7638 struct i802_bss *bss = priv; 7639 struct wpa_driver_nl80211_data *drv = bss->drv; 7640 char name[IFNAMSIZ + 1]; 7641 7642 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 7643 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 7644 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 7645 if (val) { 7646 if (!if_nametoindex(name)) { 7647 if (nl80211_create_iface(drv, name, 7648 NL80211_IFTYPE_AP_VLAN, 7649 NULL, 1) < 0) 7650 return -1; 7651 if (bridge_ifname && 7652 linux_br_add_if(drv->global->ioctl_sock, 7653 bridge_ifname, name) < 0) 7654 return -1; 7655 } 7656 linux_set_iface_flags(drv->global->ioctl_sock, name, 1); 7657 return i802_set_sta_vlan(priv, addr, name, 0); 7658 } else { 7659 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 7660 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 7661 name); 7662 } 7663} 7664 7665 7666static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 7667{ 7668 struct wpa_driver_nl80211_data *drv = eloop_ctx; 7669 struct sockaddr_ll lladdr; 7670 unsigned char buf[3000]; 7671 int len; 7672 socklen_t fromlen = sizeof(lladdr); 7673 7674 len = recvfrom(sock, buf, sizeof(buf), 0, 7675 (struct sockaddr *)&lladdr, &fromlen); 7676 if (len < 0) { 7677 perror("recv"); 7678 return; 7679 } 7680 7681 if (have_ifidx(drv, lladdr.sll_ifindex)) 7682 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 7683} 7684 7685 7686static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 7687 struct i802_bss *bss, 7688 const char *brname, const char *ifname) 7689{ 7690 int ifindex; 7691 char in_br[IFNAMSIZ]; 7692 7693 os_strlcpy(bss->brname, brname, IFNAMSIZ); 7694 ifindex = if_nametoindex(brname); 7695 if (ifindex == 0) { 7696 /* 7697 * Bridge was configured, but the bridge device does 7698 * not exist. Try to add it now. 7699 */ 7700 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 7701 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 7702 "bridge interface %s: %s", 7703 brname, strerror(errno)); 7704 return -1; 7705 } 7706 bss->added_bridge = 1; 7707 add_ifidx(drv, if_nametoindex(brname)); 7708 } 7709 7710 if (linux_br_get(in_br, ifname) == 0) { 7711 if (os_strcmp(in_br, brname) == 0) 7712 return 0; /* already in the bridge */ 7713 7714 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 7715 "bridge %s", ifname, in_br); 7716 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 7717 0) { 7718 wpa_printf(MSG_ERROR, "nl80211: Failed to " 7719 "remove interface %s from bridge " 7720 "%s: %s", 7721 ifname, brname, strerror(errno)); 7722 return -1; 7723 } 7724 } 7725 7726 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 7727 ifname, brname); 7728 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 7729 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 7730 "into bridge %s: %s", 7731 ifname, brname, strerror(errno)); 7732 return -1; 7733 } 7734 bss->added_if_into_bridge = 1; 7735 7736 return 0; 7737} 7738 7739 7740static void *i802_init(struct hostapd_data *hapd, 7741 struct wpa_init_params *params) 7742{ 7743 struct wpa_driver_nl80211_data *drv; 7744 struct i802_bss *bss; 7745 size_t i; 7746 char brname[IFNAMSIZ]; 7747 int ifindex, br_ifindex; 7748 int br_added = 0; 7749 7750 bss = wpa_driver_nl80211_init(hapd, params->ifname, 7751 params->global_priv); 7752 if (bss == NULL) 7753 return NULL; 7754 7755 drv = bss->drv; 7756 drv->nlmode = NL80211_IFTYPE_AP; 7757 drv->eapol_sock = -1; 7758 7759 if (linux_br_get(brname, params->ifname) == 0) { 7760 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 7761 params->ifname, brname); 7762 br_ifindex = if_nametoindex(brname); 7763 } else { 7764 brname[0] = '\0'; 7765 br_ifindex = 0; 7766 } 7767 7768 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 7769 drv->if_indices = drv->default_if_indices; 7770 for (i = 0; i < params->num_bridge; i++) { 7771 if (params->bridge[i]) { 7772 ifindex = if_nametoindex(params->bridge[i]); 7773 if (ifindex) 7774 add_ifidx(drv, ifindex); 7775 if (ifindex == br_ifindex) 7776 br_added = 1; 7777 } 7778 } 7779 if (!br_added && br_ifindex && 7780 (params->num_bridge == 0 || !params->bridge[0])) 7781 add_ifidx(drv, br_ifindex); 7782 7783 /* start listening for EAPOL on the default AP interface */ 7784 add_ifidx(drv, drv->ifindex); 7785 7786 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 7787 goto failed; 7788 7789 if (params->bssid) { 7790 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7791 params->bssid)) 7792 goto failed; 7793 } 7794 7795 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 7796 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 7797 "into AP mode", bss->ifname); 7798 goto failed; 7799 } 7800 7801 if (params->num_bridge && params->bridge[0] && 7802 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 7803 goto failed; 7804 7805 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 7806 goto failed; 7807 7808 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 7809 if (drv->eapol_sock < 0) { 7810 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 7811 goto failed; 7812 } 7813 7814 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 7815 { 7816 printf("Could not register read socket for eapol\n"); 7817 goto failed; 7818 } 7819 7820 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7821 params->own_addr)) 7822 goto failed; 7823 7824 memcpy(bss->addr, params->own_addr, ETH_ALEN); 7825 7826 return bss; 7827 7828failed: 7829 wpa_driver_nl80211_deinit(bss); 7830 return NULL; 7831} 7832 7833 7834static void i802_deinit(void *priv) 7835{ 7836 wpa_driver_nl80211_deinit(priv); 7837} 7838 7839#endif /* HOSTAPD */ 7840 7841 7842static enum nl80211_iftype wpa_driver_nl80211_if_type( 7843 enum wpa_driver_if_type type) 7844{ 7845 switch (type) { 7846 case WPA_IF_STATION: 7847 return NL80211_IFTYPE_STATION; 7848 case WPA_IF_P2P_CLIENT: 7849 case WPA_IF_P2P_GROUP: 7850 return NL80211_IFTYPE_P2P_CLIENT; 7851 case WPA_IF_AP_VLAN: 7852 return NL80211_IFTYPE_AP_VLAN; 7853 case WPA_IF_AP_BSS: 7854 return NL80211_IFTYPE_AP; 7855 case WPA_IF_P2P_GO: 7856 return NL80211_IFTYPE_P2P_GO; 7857 } 7858 return -1; 7859} 7860 7861 7862#ifdef CONFIG_P2P 7863 7864static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 7865{ 7866 struct wpa_driver_nl80211_data *drv; 7867 dl_list_for_each(drv, &global->interfaces, 7868 struct wpa_driver_nl80211_data, list) { 7869 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 7870 return 1; 7871 } 7872 return 0; 7873} 7874 7875 7876static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 7877 u8 *new_addr) 7878{ 7879 unsigned int idx; 7880 7881 if (!drv->global) 7882 return -1; 7883 7884 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 7885 for (idx = 0; idx < 64; idx++) { 7886 new_addr[0] = drv->first_bss.addr[0] | 0x02; 7887 new_addr[0] ^= idx << 2; 7888 if (!nl80211_addr_in_use(drv->global, new_addr)) 7889 break; 7890 } 7891 if (idx == 64) 7892 return -1; 7893 7894 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 7895 MACSTR, MAC2STR(new_addr)); 7896 7897 return 0; 7898} 7899 7900#endif /* CONFIG_P2P */ 7901 7902 7903static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 7904 const char *ifname, const u8 *addr, 7905 void *bss_ctx, void **drv_priv, 7906 char *force_ifname, u8 *if_addr, 7907 const char *bridge) 7908{ 7909 struct i802_bss *bss = priv; 7910 struct wpa_driver_nl80211_data *drv = bss->drv; 7911 int ifidx; 7912#ifdef HOSTAPD 7913 struct i802_bss *new_bss = NULL; 7914 7915 if (type == WPA_IF_AP_BSS) { 7916 new_bss = os_zalloc(sizeof(*new_bss)); 7917 if (new_bss == NULL) 7918 return -1; 7919 } 7920#endif /* HOSTAPD */ 7921 7922 if (addr) 7923 os_memcpy(if_addr, addr, ETH_ALEN); 7924 ifidx = nl80211_create_iface(drv, ifname, 7925 wpa_driver_nl80211_if_type(type), addr, 7926 0); 7927 if (ifidx < 0) { 7928#ifdef HOSTAPD 7929 os_free(new_bss); 7930#endif /* HOSTAPD */ 7931 return -1; 7932 } 7933 7934 if (!addr && 7935 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7936 if_addr) < 0) { 7937 nl80211_remove_iface(drv, ifidx); 7938 return -1; 7939 } 7940 7941#ifdef CONFIG_P2P 7942 if (!addr && 7943 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 7944 type == WPA_IF_P2P_GO)) { 7945 /* Enforce unique P2P Interface Address */ 7946 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 7947 7948 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7949 own_addr) < 0 || 7950 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 7951 new_addr) < 0) { 7952 nl80211_remove_iface(drv, ifidx); 7953 return -1; 7954 } 7955 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 7956 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 7957 "for P2P group interface"); 7958 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 7959 nl80211_remove_iface(drv, ifidx); 7960 return -1; 7961 } 7962 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 7963 new_addr) < 0) { 7964 nl80211_remove_iface(drv, ifidx); 7965 return -1; 7966 } 7967 } 7968 os_memcpy(if_addr, new_addr, ETH_ALEN); 7969 } 7970#endif /* CONFIG_P2P */ 7971 7972#ifdef HOSTAPD 7973 if (bridge && 7974 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 7975 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 7976 "interface %s to a bridge %s", ifname, bridge); 7977 nl80211_remove_iface(drv, ifidx); 7978 os_free(new_bss); 7979 return -1; 7980 } 7981 7982 if (type == WPA_IF_AP_BSS) { 7983 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 7984 { 7985 nl80211_remove_iface(drv, ifidx); 7986 os_free(new_bss); 7987 return -1; 7988 } 7989 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 7990 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 7991 new_bss->ifindex = ifidx; 7992 new_bss->drv = drv; 7993 new_bss->next = drv->first_bss.next; 7994 new_bss->freq = drv->first_bss.freq; 7995 drv->first_bss.next = new_bss; 7996 if (drv_priv) 7997 *drv_priv = new_bss; 7998 nl80211_init_bss(new_bss); 7999 8000 /* Subscribe management frames for this WPA_IF_AP_BSS */ 8001 if (nl80211_setup_ap(new_bss)) 8002 return -1; 8003 } 8004#endif /* HOSTAPD */ 8005 8006 if (drv->global) 8007 drv->global->if_add_ifindex = ifidx; 8008 8009 return 0; 8010} 8011 8012 8013static int wpa_driver_nl80211_if_remove(void *priv, 8014 enum wpa_driver_if_type type, 8015 const char *ifname) 8016{ 8017 struct i802_bss *bss = priv; 8018 struct wpa_driver_nl80211_data *drv = bss->drv; 8019 int ifindex = if_nametoindex(ifname); 8020 8021 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8022 __func__, type, ifname, ifindex); 8023 if (ifindex <= 0) 8024 return -1; 8025 8026#ifdef HOSTAPD 8027 if (bss->added_if_into_bridge) { 8028 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8029 bss->ifname) < 0) 8030 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8031 "interface %s from bridge %s: %s", 8032 bss->ifname, bss->brname, strerror(errno)); 8033 } 8034 if (bss->added_bridge) { 8035 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8036 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8037 "bridge %s: %s", 8038 bss->brname, strerror(errno)); 8039 } 8040#endif /* HOSTAPD */ 8041 8042 nl80211_remove_iface(drv, ifindex); 8043 8044#ifdef HOSTAPD 8045 if (type != WPA_IF_AP_BSS) 8046 return 0; 8047 8048 if (bss != &drv->first_bss) { 8049 struct i802_bss *tbss; 8050 8051 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8052 if (tbss->next == bss) { 8053 tbss->next = bss->next; 8054 /* Unsubscribe management frames */ 8055 nl80211_teardown_ap(bss); 8056 nl80211_destroy_bss(bss); 8057 os_free(bss); 8058 bss = NULL; 8059 break; 8060 } 8061 } 8062 if (bss) 8063 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8064 "BSS %p in the list", __func__, bss); 8065 } 8066#endif /* HOSTAPD */ 8067 8068 return 0; 8069} 8070 8071 8072static int cookie_handler(struct nl_msg *msg, void *arg) 8073{ 8074 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8075 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8076 u64 *cookie = arg; 8077 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8078 genlmsg_attrlen(gnlh, 0), NULL); 8079 if (tb[NL80211_ATTR_COOKIE]) 8080 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8081 return NL_SKIP; 8082} 8083 8084 8085static int nl80211_send_frame_cmd(struct i802_bss *bss, 8086 unsigned int freq, unsigned int wait, 8087 const u8 *buf, size_t buf_len, 8088 u64 *cookie_out, int no_cck, int no_ack, 8089 int offchanok) 8090{ 8091 struct wpa_driver_nl80211_data *drv = bss->drv; 8092 struct nl_msg *msg; 8093 u64 cookie; 8094 int ret = -1; 8095 8096 msg = nlmsg_alloc(); 8097 if (!msg) 8098 return -1; 8099 8100 wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8101 "no_ack=%d offchanok=%d", 8102 freq, wait, no_cck, no_ack, offchanok); 8103 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8104 8105 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8106 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8107#ifndef ANDROID_P2P 8108 if (wait) 8109 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8110#endif 8111 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8112 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8113 if (no_cck) 8114 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8115 if (no_ack) 8116 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8117 8118 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8119 8120 cookie = 0; 8121 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8122 msg = NULL; 8123 if (ret) { 8124 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8125 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8126 freq, wait); 8127 goto nla_put_failure; 8128 } 8129 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; " 8130 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8131 (long long unsigned int) cookie); 8132 8133 if (cookie_out) 8134 *cookie_out = no_ack ? (u64) -1 : cookie; 8135 8136nla_put_failure: 8137 nlmsg_free(msg); 8138 return ret; 8139} 8140 8141 8142static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq, 8143 unsigned int wait_time, 8144 const u8 *dst, const u8 *src, 8145 const u8 *bssid, 8146 const u8 *data, size_t data_len, 8147 int no_cck) 8148{ 8149 struct i802_bss *bss = priv; 8150 struct wpa_driver_nl80211_data *drv = bss->drv; 8151 int ret = -1; 8152 u8 *buf; 8153 struct ieee80211_hdr *hdr; 8154 8155 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8156 "freq=%u MHz wait=%d ms no_cck=%d)", 8157 drv->ifindex, freq, wait_time, no_cck); 8158 8159 buf = os_zalloc(24 + data_len); 8160 if (buf == NULL) 8161 return ret; 8162 os_memcpy(buf + 24, data, data_len); 8163 hdr = (struct ieee80211_hdr *) buf; 8164 hdr->frame_control = 8165 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8166 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8167 os_memcpy(hdr->addr2, src, ETH_ALEN); 8168 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8169 8170 if (is_ap_interface(drv->nlmode)) 8171 ret = wpa_driver_nl80211_send_mlme_freq(priv, buf, 8172 24 + data_len, 8173 0, freq, no_cck, 1, 8174 wait_time); 8175 else 8176 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8177 24 + data_len, 8178 &drv->send_action_cookie, 8179 no_cck, 0, 1); 8180 8181 os_free(buf); 8182 return ret; 8183} 8184 8185 8186static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8187{ 8188 struct i802_bss *bss = priv; 8189 struct wpa_driver_nl80211_data *drv = bss->drv; 8190 struct nl_msg *msg; 8191 int ret; 8192 8193 msg = nlmsg_alloc(); 8194 if (!msg) 8195 return; 8196 8197 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8198 8199 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8200 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8201 8202 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8203 msg = NULL; 8204 if (ret) 8205 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8206 "(%s)", ret, strerror(-ret)); 8207 8208 nla_put_failure: 8209 nlmsg_free(msg); 8210} 8211 8212 8213static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8214 unsigned int duration) 8215{ 8216 struct i802_bss *bss = priv; 8217 struct wpa_driver_nl80211_data *drv = bss->drv; 8218 struct nl_msg *msg; 8219 int ret; 8220 u64 cookie; 8221 8222 msg = nlmsg_alloc(); 8223 if (!msg) 8224 return -1; 8225 8226 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8227 8228 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8229 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8230 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8231 8232 cookie = 0; 8233 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8234 msg = NULL; 8235 if (ret == 0) { 8236 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8237 "0x%llx for freq=%u MHz duration=%u", 8238 (long long unsigned int) cookie, freq, duration); 8239 drv->remain_on_chan_cookie = cookie; 8240 drv->pending_remain_on_chan = 1; 8241 return 0; 8242 } 8243 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8244 "(freq=%d duration=%u): %d (%s)", 8245 freq, duration, ret, strerror(-ret)); 8246nla_put_failure: 8247 nlmsg_free(msg); 8248 return -1; 8249} 8250 8251 8252static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8253{ 8254 struct i802_bss *bss = priv; 8255 struct wpa_driver_nl80211_data *drv = bss->drv; 8256 struct nl_msg *msg; 8257 int ret; 8258 8259 if (!drv->pending_remain_on_chan) { 8260 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8261 "to cancel"); 8262 return -1; 8263 } 8264 8265 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8266 "0x%llx", 8267 (long long unsigned int) drv->remain_on_chan_cookie); 8268 8269 msg = nlmsg_alloc(); 8270 if (!msg) 8271 return -1; 8272 8273 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8274 8275 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8276 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8277 8278 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8279 msg = NULL; 8280 if (ret == 0) 8281 return 0; 8282 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8283 "%d (%s)", ret, strerror(-ret)); 8284nla_put_failure: 8285 nlmsg_free(msg); 8286 return -1; 8287} 8288 8289 8290static int wpa_driver_nl80211_probe_req_report(void *priv, int report) 8291{ 8292 struct i802_bss *bss = priv; 8293 struct wpa_driver_nl80211_data *drv = bss->drv; 8294 8295 if (!report) { 8296 if (bss->nl_preq && drv->device_ap_sme && 8297 is_ap_interface(drv->nlmode)) { 8298 /* 8299 * Do not disable Probe Request reporting that was 8300 * enabled in nl80211_setup_ap(). 8301 */ 8302 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8303 "Probe Request reporting nl_preq=%p while " 8304 "in AP mode", bss->nl_preq); 8305 } else if (bss->nl_preq) { 8306 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8307 "reporting nl_preq=%p", bss->nl_preq); 8308 eloop_unregister_read_sock( 8309 nl_socket_get_fd(bss->nl_preq)); 8310 nl_destroy_handles(&bss->nl_preq); 8311 } 8312 return 0; 8313 } 8314 8315 if (bss->nl_preq) { 8316 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8317 "already on! nl_preq=%p", bss->nl_preq); 8318 return 0; 8319 } 8320 8321 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8322 if (bss->nl_preq == NULL) 8323 return -1; 8324 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8325 "reporting nl_preq=%p", bss->nl_preq); 8326 8327 if (nl80211_register_frame(bss, bss->nl_preq, 8328 (WLAN_FC_TYPE_MGMT << 2) | 8329 (WLAN_FC_STYPE_PROBE_REQ << 4), 8330 NULL, 0) < 0) 8331 goto out_err; 8332 8333 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8334 wpa_driver_nl80211_event_receive, bss->nl_cb, 8335 bss->nl_preq); 8336 8337 return 0; 8338 8339 out_err: 8340 nl_destroy_handles(&bss->nl_preq); 8341 return -1; 8342} 8343 8344 8345static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8346 int ifindex, int disabled) 8347{ 8348 struct nl_msg *msg; 8349 struct nlattr *bands, *band; 8350 int ret; 8351 8352 msg = nlmsg_alloc(); 8353 if (!msg) 8354 return -1; 8355 8356 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8357 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8358 8359 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8360 if (!bands) 8361 goto nla_put_failure; 8362 8363 /* 8364 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8365 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8366 * rates. All 5 GHz rates are left enabled. 8367 */ 8368 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8369 if (!band) 8370 goto nla_put_failure; 8371 if (disabled) { 8372 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8373 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8374 } 8375 nla_nest_end(msg, band); 8376 8377 nla_nest_end(msg, bands); 8378 8379 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8380 msg = NULL; 8381 if (ret) { 8382 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8383 "(%s)", ret, strerror(-ret)); 8384 } 8385 return ret; 8386 8387nla_put_failure: 8388 nlmsg_free(msg); 8389 return -1; 8390} 8391 8392 8393static int wpa_driver_nl80211_deinit_ap(void *priv) 8394{ 8395 struct i802_bss *bss = priv; 8396 struct wpa_driver_nl80211_data *drv = bss->drv; 8397 if (!is_ap_interface(drv->nlmode)) 8398 return -1; 8399 wpa_driver_nl80211_del_beacon(drv); 8400 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8401} 8402 8403 8404static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8405{ 8406 struct i802_bss *bss = priv; 8407 struct wpa_driver_nl80211_data *drv = bss->drv; 8408 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8409 return -1; 8410 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8411} 8412 8413 8414static void wpa_driver_nl80211_resume(void *priv) 8415{ 8416 struct i802_bss *bss = priv; 8417 struct wpa_driver_nl80211_data *drv = bss->drv; 8418 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8419 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8420 "resume event"); 8421 } 8422} 8423 8424 8425static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8426 const u8 *ies, size_t ies_len) 8427{ 8428 struct i802_bss *bss = priv; 8429 struct wpa_driver_nl80211_data *drv = bss->drv; 8430 int ret; 8431 u8 *data, *pos; 8432 size_t data_len; 8433 const u8 *own_addr = bss->addr; 8434 8435 if (action != 1) { 8436 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8437 "action %d", action); 8438 return -1; 8439 } 8440 8441 /* 8442 * Action frame payload: 8443 * Category[1] = 6 (Fast BSS Transition) 8444 * Action[1] = 1 (Fast BSS Transition Request) 8445 * STA Address 8446 * Target AP Address 8447 * FT IEs 8448 */ 8449 8450 data_len = 2 + 2 * ETH_ALEN + ies_len; 8451 data = os_malloc(data_len); 8452 if (data == NULL) 8453 return -1; 8454 pos = data; 8455 *pos++ = 0x06; /* FT Action category */ 8456 *pos++ = action; 8457 os_memcpy(pos, own_addr, ETH_ALEN); 8458 pos += ETH_ALEN; 8459 os_memcpy(pos, target_ap, ETH_ALEN); 8460 pos += ETH_ALEN; 8461 os_memcpy(pos, ies, ies_len); 8462 8463 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 8464 drv->bssid, own_addr, drv->bssid, 8465 data, data_len, 0); 8466 os_free(data); 8467 8468 return ret; 8469} 8470 8471 8472static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 8473{ 8474 struct i802_bss *bss = priv; 8475 struct wpa_driver_nl80211_data *drv = bss->drv; 8476 struct nl_msg *msg, *cqm = NULL; 8477 8478 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 8479 "hysteresis=%d", threshold, hysteresis); 8480 8481 msg = nlmsg_alloc(); 8482 if (!msg) 8483 return -1; 8484 8485 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 8486 8487 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8488 8489 cqm = nlmsg_alloc(); 8490 if (cqm == NULL) 8491 return -1; 8492 8493 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 8494 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 8495 nla_put_nested(msg, NL80211_ATTR_CQM, cqm); 8496 8497 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 8498 return 0; 8499 msg = NULL; 8500 8501nla_put_failure: 8502 nlmsg_free(cqm); 8503 nlmsg_free(msg); 8504 return -1; 8505} 8506 8507 8508static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 8509{ 8510 struct i802_bss *bss = priv; 8511 struct wpa_driver_nl80211_data *drv = bss->drv; 8512 int res; 8513 8514 os_memset(si, 0, sizeof(*si)); 8515 res = nl80211_get_link_signal(drv, si); 8516 if (res != 0) 8517 return res; 8518 8519 return nl80211_get_link_noise(drv, si); 8520} 8521 8522 8523static int wpa_driver_nl80211_shared_freq(void *priv) 8524{ 8525 struct i802_bss *bss = priv; 8526 struct wpa_driver_nl80211_data *drv = bss->drv; 8527 struct wpa_driver_nl80211_data *driver; 8528 int freq = 0; 8529 8530 /* 8531 * If the same PHY is in connected state with some other interface, 8532 * then retrieve the assoc freq. 8533 */ 8534 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 8535 drv->phyname); 8536 8537 dl_list_for_each(driver, &drv->global->interfaces, 8538 struct wpa_driver_nl80211_data, list) { 8539 if (drv == driver || 8540 os_strcmp(drv->phyname, driver->phyname) != 0 || 8541#ifdef ANDROID_P2P 8542 (!driver->associated && !is_ap_interface(driver->nlmode))) 8543#else 8544 !driver->associated) 8545#endif 8546 continue; 8547 8548 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 8549 MACSTR, 8550 driver->phyname, driver->first_bss.ifname, 8551 MAC2STR(driver->first_bss.addr)); 8552 if (is_ap_interface(driver->nlmode)) 8553 freq = driver->first_bss.freq; 8554 else 8555 freq = nl80211_get_assoc_freq(driver); 8556 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 8557 drv->phyname, freq); 8558 } 8559 8560 if (!freq) 8561 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 8562 "PHY (%s) in associated state", drv->phyname); 8563 8564 return freq; 8565} 8566 8567 8568static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 8569 int encrypt) 8570{ 8571 struct i802_bss *bss = priv; 8572 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 8573 0, 0, 0, 0); 8574} 8575 8576 8577static int nl80211_set_param(void *priv, const char *param) 8578{ 8579 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 8580 if (param == NULL) 8581 return 0; 8582 8583#ifdef CONFIG_P2P 8584 if (os_strstr(param, "use_p2p_group_interface=1")) { 8585 struct i802_bss *bss = priv; 8586 struct wpa_driver_nl80211_data *drv = bss->drv; 8587 8588 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 8589 "interface"); 8590 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 8591 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 8592 } 8593#ifdef ANDROID_P2P 8594 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 8595 struct i802_bss *bss = priv; 8596 struct wpa_driver_nl80211_data *drv = bss->drv; 8597 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 8598 "concurrency"); 8599 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 8600 } 8601#endif 8602#endif /* CONFIG_P2P */ 8603 8604 return 0; 8605} 8606 8607 8608static void * nl80211_global_init(void) 8609{ 8610 struct nl80211_global *global; 8611 struct netlink_config *cfg; 8612 8613 global = os_zalloc(sizeof(*global)); 8614 if (global == NULL) 8615 return NULL; 8616 global->ioctl_sock = -1; 8617 dl_list_init(&global->interfaces); 8618 global->if_add_ifindex = -1; 8619 8620 cfg = os_zalloc(sizeof(*cfg)); 8621 if (cfg == NULL) 8622 goto err; 8623 8624 cfg->ctx = global; 8625 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 8626 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 8627 global->netlink = netlink_init(cfg); 8628 if (global->netlink == NULL) { 8629 os_free(cfg); 8630 goto err; 8631 } 8632 8633 if (wpa_driver_nl80211_init_nl_global(global) < 0) 8634 goto err; 8635 8636 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 8637 if (global->ioctl_sock < 0) { 8638 perror("socket(PF_INET,SOCK_DGRAM)"); 8639 goto err; 8640 } 8641 8642 return global; 8643 8644err: 8645 nl80211_global_deinit(global); 8646 return NULL; 8647} 8648 8649 8650static void nl80211_global_deinit(void *priv) 8651{ 8652 struct nl80211_global *global = priv; 8653 if (global == NULL) 8654 return; 8655 if (!dl_list_empty(&global->interfaces)) { 8656 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 8657 "nl80211_global_deinit", 8658 dl_list_len(&global->interfaces)); 8659 } 8660 8661 if (global->netlink) 8662 netlink_deinit(global->netlink); 8663 8664 nl_destroy_handles(&global->nl); 8665 8666 if (global->nl_event) { 8667 eloop_unregister_read_sock( 8668 nl_socket_get_fd(global->nl_event)); 8669 nl_destroy_handles(&global->nl_event); 8670 } 8671 8672 nl_cb_put(global->nl_cb); 8673 8674 if (global->ioctl_sock >= 0) 8675 close(global->ioctl_sock); 8676 8677 os_free(global); 8678} 8679 8680 8681static const char * nl80211_get_radio_name(void *priv) 8682{ 8683 struct i802_bss *bss = priv; 8684 struct wpa_driver_nl80211_data *drv = bss->drv; 8685 return drv->phyname; 8686} 8687 8688 8689static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 8690 const u8 *pmkid) 8691{ 8692 struct nl_msg *msg; 8693 8694 msg = nlmsg_alloc(); 8695 if (!msg) 8696 return -ENOMEM; 8697 8698 nl80211_cmd(bss->drv, msg, 0, cmd); 8699 8700 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 8701 if (pmkid) 8702 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 8703 if (bssid) 8704 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 8705 8706 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 8707 nla_put_failure: 8708 nlmsg_free(msg); 8709 return -ENOBUFS; 8710} 8711 8712 8713static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8714{ 8715 struct i802_bss *bss = priv; 8716 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 8717 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 8718} 8719 8720 8721static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8722{ 8723 struct i802_bss *bss = priv; 8724 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 8725 MAC2STR(bssid)); 8726 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 8727} 8728 8729 8730static int nl80211_flush_pmkid(void *priv) 8731{ 8732 struct i802_bss *bss = priv; 8733 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 8734 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 8735} 8736 8737 8738static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 8739 const u8 *replay_ctr) 8740{ 8741 struct i802_bss *bss = priv; 8742 struct wpa_driver_nl80211_data *drv = bss->drv; 8743 struct nlattr *replay_nested; 8744 struct nl_msg *msg; 8745 8746 msg = nlmsg_alloc(); 8747 if (!msg) 8748 return; 8749 8750 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 8751 8752 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8753 8754 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 8755 if (!replay_nested) 8756 goto nla_put_failure; 8757 8758 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 8759 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 8760 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 8761 replay_ctr); 8762 8763 nla_nest_end(msg, replay_nested); 8764 8765 send_and_recv_msgs(drv, msg, NULL, NULL); 8766 return; 8767 nla_put_failure: 8768 nlmsg_free(msg); 8769} 8770 8771 8772static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 8773 const u8 *addr, int qos) 8774{ 8775 /* send data frame to poll STA and check whether 8776 * this frame is ACKed */ 8777 struct { 8778 struct ieee80211_hdr hdr; 8779 u16 qos_ctl; 8780 } STRUCT_PACKED nulldata; 8781 size_t size; 8782 8783 /* Send data frame to poll STA and check whether this frame is ACKed */ 8784 8785 os_memset(&nulldata, 0, sizeof(nulldata)); 8786 8787 if (qos) { 8788 nulldata.hdr.frame_control = 8789 IEEE80211_FC(WLAN_FC_TYPE_DATA, 8790 WLAN_FC_STYPE_QOS_NULL); 8791 size = sizeof(nulldata); 8792 } else { 8793 nulldata.hdr.frame_control = 8794 IEEE80211_FC(WLAN_FC_TYPE_DATA, 8795 WLAN_FC_STYPE_NULLFUNC); 8796 size = sizeof(struct ieee80211_hdr); 8797 } 8798 8799 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 8800 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 8801 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 8802 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 8803 8804 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0) 8805 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 8806 "send poll frame"); 8807} 8808 8809static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 8810 int qos) 8811{ 8812 struct i802_bss *bss = priv; 8813 struct wpa_driver_nl80211_data *drv = bss->drv; 8814 struct nl_msg *msg; 8815 8816 if (!drv->poll_command_supported) { 8817 nl80211_send_null_frame(bss, own_addr, addr, qos); 8818 return; 8819 } 8820 8821 msg = nlmsg_alloc(); 8822 if (!msg) 8823 return; 8824 8825 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 8826 8827 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8828 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8829 8830 send_and_recv_msgs(drv, msg, NULL, NULL); 8831 return; 8832 nla_put_failure: 8833 nlmsg_free(msg); 8834} 8835 8836 8837static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 8838{ 8839 struct nl_msg *msg; 8840 8841 msg = nlmsg_alloc(); 8842 if (!msg) 8843 return -ENOMEM; 8844 8845 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 8846 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8847 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 8848 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 8849 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 8850nla_put_failure: 8851 nlmsg_free(msg); 8852 return -ENOBUFS; 8853} 8854 8855 8856static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 8857 int ctwindow) 8858{ 8859 struct i802_bss *bss = priv; 8860 8861 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 8862 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 8863 8864 if (opp_ps != -1 || ctwindow != -1) 8865#ifdef ANDROID_P2P 8866 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 8867#else 8868 return -1; /* Not yet supported */ 8869#endif 8870 8871 if (legacy_ps == -1) 8872 return 0; 8873 if (legacy_ps != 0 && legacy_ps != 1) 8874 return -1; /* Not yet supported */ 8875 8876 return nl80211_set_power_save(bss, legacy_ps); 8877} 8878 8879 8880#ifdef CONFIG_TDLS 8881 8882static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 8883 u8 dialog_token, u16 status_code, 8884 const u8 *buf, size_t len) 8885{ 8886 struct i802_bss *bss = priv; 8887 struct wpa_driver_nl80211_data *drv = bss->drv; 8888 struct nl_msg *msg; 8889 8890 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 8891 return -EOPNOTSUPP; 8892 8893 if (!dst) 8894 return -EINVAL; 8895 8896 msg = nlmsg_alloc(); 8897 if (!msg) 8898 return -ENOMEM; 8899 8900 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 8901 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8902 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 8903 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 8904 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 8905 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 8906 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 8907 8908 return send_and_recv_msgs(drv, msg, NULL, NULL); 8909 8910nla_put_failure: 8911 nlmsg_free(msg); 8912 return -ENOBUFS; 8913} 8914 8915 8916static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 8917{ 8918 struct i802_bss *bss = priv; 8919 struct wpa_driver_nl80211_data *drv = bss->drv; 8920 struct nl_msg *msg; 8921 enum nl80211_tdls_operation nl80211_oper; 8922 8923 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 8924 return -EOPNOTSUPP; 8925 8926 switch (oper) { 8927 case TDLS_DISCOVERY_REQ: 8928 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 8929 break; 8930 case TDLS_SETUP: 8931 nl80211_oper = NL80211_TDLS_SETUP; 8932 break; 8933 case TDLS_TEARDOWN: 8934 nl80211_oper = NL80211_TDLS_TEARDOWN; 8935 break; 8936 case TDLS_ENABLE_LINK: 8937 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 8938 break; 8939 case TDLS_DISABLE_LINK: 8940 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 8941 break; 8942 case TDLS_ENABLE: 8943 return 0; 8944 case TDLS_DISABLE: 8945 return 0; 8946 default: 8947 return -EINVAL; 8948 } 8949 8950 msg = nlmsg_alloc(); 8951 if (!msg) 8952 return -ENOMEM; 8953 8954 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 8955 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 8956 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8957 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 8958 8959 return send_and_recv_msgs(drv, msg, NULL, NULL); 8960 8961nla_put_failure: 8962 nlmsg_free(msg); 8963 return -ENOBUFS; 8964} 8965 8966#endif /* CONFIG TDLS */ 8967 8968 8969#ifdef ANDROID 8970 8971typedef struct android_wifi_priv_cmd { 8972 char *buf; 8973 int used_len; 8974 int total_len; 8975} android_wifi_priv_cmd; 8976 8977static int drv_errors = 0; 8978 8979static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 8980{ 8981 drv_errors++; 8982 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 8983 drv_errors = 0; 8984 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 8985 } 8986} 8987 8988 8989static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 8990{ 8991 struct wpa_driver_nl80211_data *drv = bss->drv; 8992 struct ifreq ifr; 8993 android_wifi_priv_cmd priv_cmd; 8994 char buf[MAX_DRV_CMD_SIZE]; 8995 int ret; 8996 8997 os_memset(&ifr, 0, sizeof(ifr)); 8998 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 8999 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9000 9001 os_memset(buf, 0, sizeof(buf)); 9002 os_strlcpy(buf, cmd, sizeof(buf)); 9003 9004 priv_cmd.buf = buf; 9005 priv_cmd.used_len = sizeof(buf); 9006 priv_cmd.total_len = sizeof(buf); 9007 ifr.ifr_data = &priv_cmd; 9008 9009 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9010 if (ret < 0) { 9011 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9012 __func__); 9013 wpa_driver_send_hang_msg(drv); 9014 return ret; 9015 } 9016 9017 drv_errors = 0; 9018 return 0; 9019} 9020 9021 9022static int android_pno_start(struct i802_bss *bss, 9023 struct wpa_driver_scan_params *params) 9024{ 9025 struct wpa_driver_nl80211_data *drv = bss->drv; 9026 struct ifreq ifr; 9027 android_wifi_priv_cmd priv_cmd; 9028 int ret = 0, i = 0, bp; 9029 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9030 9031 bp = WEXT_PNOSETUP_HEADER_SIZE; 9032 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9033 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9034 buf[bp++] = WEXT_PNO_TLV_VERSION; 9035 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9036 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9037 9038 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9039 /* Check that there is enough space needed for 1 more SSID, the 9040 * other sections and null termination */ 9041 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9042 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9043 break; 9044 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9045 params->ssids[i].ssid, 9046 params->ssids[i].ssid_len); 9047 buf[bp++] = WEXT_PNO_SSID_SECTION; 9048 buf[bp++] = params->ssids[i].ssid_len; 9049 os_memcpy(&buf[bp], params->ssids[i].ssid, 9050 params->ssids[i].ssid_len); 9051 bp += params->ssids[i].ssid_len; 9052 i++; 9053 } 9054 9055 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9056 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9057 WEXT_PNO_SCAN_INTERVAL); 9058 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9059 9060 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9061 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9062 WEXT_PNO_REPEAT); 9063 bp += WEXT_PNO_REPEAT_LENGTH; 9064 9065 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9066 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9067 WEXT_PNO_MAX_REPEAT); 9068 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9069 9070 memset(&ifr, 0, sizeof(ifr)); 9071 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9072 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9073 9074 priv_cmd.buf = buf; 9075 priv_cmd.used_len = bp; 9076 priv_cmd.total_len = bp; 9077 ifr.ifr_data = &priv_cmd; 9078 9079 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9080 9081 if (ret < 0) { 9082 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9083 ret); 9084 wpa_driver_send_hang_msg(drv); 9085 return ret; 9086 } 9087 9088 drv_errors = 0; 9089 9090 return android_priv_cmd(bss, "PNOFORCE 1"); 9091} 9092 9093 9094static int android_pno_stop(struct i802_bss *bss) 9095{ 9096 return android_priv_cmd(bss, "PNOFORCE 0"); 9097} 9098 9099#endif /* ANDROID */ 9100 9101 9102const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9103 .name = "nl80211", 9104 .desc = "Linux nl80211/cfg80211", 9105 .get_bssid = wpa_driver_nl80211_get_bssid, 9106 .get_ssid = wpa_driver_nl80211_get_ssid, 9107 .set_key = wpa_driver_nl80211_set_key, 9108 .scan2 = wpa_driver_nl80211_scan, 9109 .sched_scan = wpa_driver_nl80211_sched_scan, 9110 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9111 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9112 .deauthenticate = wpa_driver_nl80211_deauthenticate, 9113 .disassociate = wpa_driver_nl80211_disassociate, 9114 .authenticate = wpa_driver_nl80211_authenticate, 9115 .associate = wpa_driver_nl80211_associate, 9116 .global_init = nl80211_global_init, 9117 .global_deinit = nl80211_global_deinit, 9118 .init2 = wpa_driver_nl80211_init, 9119 .deinit = wpa_driver_nl80211_deinit, 9120 .get_capa = wpa_driver_nl80211_get_capa, 9121 .set_operstate = wpa_driver_nl80211_set_operstate, 9122 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9123 .set_country = wpa_driver_nl80211_set_country, 9124 .set_ap = wpa_driver_nl80211_set_ap, 9125 .if_add = wpa_driver_nl80211_if_add, 9126 .if_remove = wpa_driver_nl80211_if_remove, 9127 .send_mlme = wpa_driver_nl80211_send_mlme, 9128 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9129 .sta_add = wpa_driver_nl80211_sta_add, 9130 .sta_remove = wpa_driver_nl80211_sta_remove, 9131 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9132 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9133#ifdef HOSTAPD 9134 .hapd_init = i802_init, 9135 .hapd_deinit = i802_deinit, 9136 .set_wds_sta = i802_set_wds_sta, 9137#endif /* HOSTAPD */ 9138#if defined(HOSTAPD) || defined(CONFIG_AP) 9139 .get_seqnum = i802_get_seqnum, 9140 .flush = i802_flush, 9141 .read_sta_data = i802_read_sta_data, 9142 .get_inact_sec = i802_get_inact_sec, 9143 .sta_clear_stats = i802_sta_clear_stats, 9144 .set_rts = i802_set_rts, 9145 .set_frag = i802_set_frag, 9146 .set_tx_queue_params = i802_set_tx_queue_params, 9147 .set_sta_vlan = i802_set_sta_vlan, 9148 .sta_deauth = i802_sta_deauth, 9149 .sta_disassoc = i802_sta_disassoc, 9150#endif /* HOSTAPD || CONFIG_AP */ 9151 .set_freq = i802_set_freq, 9152 .send_action = wpa_driver_nl80211_send_action, 9153 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9154 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9155 .cancel_remain_on_channel = 9156 wpa_driver_nl80211_cancel_remain_on_channel, 9157 .probe_req_report = wpa_driver_nl80211_probe_req_report, 9158 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9159 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9160 .resume = wpa_driver_nl80211_resume, 9161 .send_ft_action = nl80211_send_ft_action, 9162 .signal_monitor = nl80211_signal_monitor, 9163 .signal_poll = nl80211_signal_poll, 9164 .send_frame = nl80211_send_frame, 9165 .shared_freq = wpa_driver_nl80211_shared_freq, 9166 .set_param = nl80211_set_param, 9167 .get_radio_name = nl80211_get_radio_name, 9168 .add_pmkid = nl80211_add_pmkid, 9169 .remove_pmkid = nl80211_remove_pmkid, 9170 .flush_pmkid = nl80211_flush_pmkid, 9171 .set_rekey_info = nl80211_set_rekey_info, 9172 .poll_client = nl80211_poll_client, 9173 .set_p2p_powersave = nl80211_set_p2p_powersave, 9174#ifdef CONFIG_TDLS 9175 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9176 .tdls_oper = nl80211_tdls_oper, 9177#endif /* CONFIG_TDLS */ 9178#ifdef ANDROID_P2P 9179 .set_noa = wpa_driver_set_p2p_noa, 9180 .get_noa = wpa_driver_get_p2p_noa, 9181 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9182#endif 9183#ifdef ANDROID 9184 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9185#endif 9186}; 9187