driver_nl80211.c revision f86232838cf712377867cb42417c1613ab5dc425
1/* 2 * Driver interaction with Linux nl80211/cfg80211 3 * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi> 4 * Copyright (c) 2003-2004, Instant802 Networks, Inc. 5 * Copyright (c) 2005-2006, Devicescape Software, Inc. 6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net> 7 * Copyright (c) 2009-2010, Atheros Communications 8 * 9 * This software may be distributed under the terms of the BSD license. 10 * See README for more details. 11 */ 12 13#include "includes.h" 14#include <sys/ioctl.h> 15#include <sys/types.h> 16#include <sys/stat.h> 17#include <fcntl.h> 18#include <net/if.h> 19#include <netlink/genl/genl.h> 20#include <netlink/genl/family.h> 21#include <netlink/genl/ctrl.h> 22#include <linux/rtnetlink.h> 23#include <netpacket/packet.h> 24#include <linux/filter.h> 25#include <linux/errqueue.h> 26#include "nl80211_copy.h" 27 28#include "common.h" 29#include "eloop.h" 30#include "utils/list.h" 31#include "common/ieee802_11_defs.h" 32#include "common/ieee802_11_common.h" 33#include "l2_packet/l2_packet.h" 34#include "netlink.h" 35#include "linux_ioctl.h" 36#include "radiotap.h" 37#include "radiotap_iter.h" 38#include "rfkill.h" 39#include "driver.h" 40 41#ifndef SO_WIFI_STATUS 42# if defined(__sparc__) 43# define SO_WIFI_STATUS 0x0025 44# elif defined(__parisc__) 45# define SO_WIFI_STATUS 0x4022 46# else 47# define SO_WIFI_STATUS 41 48# endif 49 50# define SCM_WIFI_STATUS SO_WIFI_STATUS 51#endif 52 53#ifndef SO_EE_ORIGIN_TXSTATUS 54#define SO_EE_ORIGIN_TXSTATUS 4 55#endif 56 57#ifndef PACKET_TX_TIMESTAMP 58#define PACKET_TX_TIMESTAMP 16 59#endif 60 61#ifdef ANDROID 62#include "android_drv.h" 63#endif /* ANDROID */ 64#ifdef CONFIG_LIBNL20 65/* libnl 2.0 compatibility code */ 66#define nl_handle nl_sock 67#define nl80211_handle_alloc nl_socket_alloc_cb 68#define nl80211_handle_destroy nl_socket_free 69#else 70/* 71 * libnl 1.1 has a bug, it tries to allocate socket numbers densely 72 * but when you free a socket again it will mess up its bitmap and 73 * and use the wrong number the next time it needs a socket ID. 74 * Therefore, we wrap the handle alloc/destroy and add our own pid 75 * accounting. 76 */ 77static uint32_t port_bitmap[32] = { 0 }; 78 79static struct nl_handle *nl80211_handle_alloc(void *cb) 80{ 81 struct nl_handle *handle; 82 uint32_t pid = getpid() & 0x3FFFFF; 83 int i; 84 85 handle = nl_handle_alloc_cb(cb); 86 87 for (i = 0; i < 1024; i++) { 88 if (port_bitmap[i / 32] & (1 << (i % 32))) 89 continue; 90 port_bitmap[i / 32] |= 1 << (i % 32); 91 pid += i << 22; 92 break; 93 } 94 95 nl_socket_set_local_port(handle, pid); 96 97 return handle; 98} 99 100static void nl80211_handle_destroy(struct nl_handle *handle) 101{ 102 uint32_t port = nl_socket_get_local_port(handle); 103 104 port >>= 22; 105 port_bitmap[port / 32] &= ~(1 << (port % 32)); 106 107 nl_handle_destroy(handle); 108} 109#endif /* CONFIG_LIBNL20 */ 110 111 112static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg) 113{ 114 struct nl_handle *handle; 115 116 handle = nl80211_handle_alloc(cb); 117 if (handle == NULL) { 118 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 119 "callbacks (%s)", dbg); 120 return NULL; 121 } 122 123 if (genl_connect(handle)) { 124 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 125 "netlink (%s)", dbg); 126 nl80211_handle_destroy(handle); 127 return NULL; 128 } 129 130 return handle; 131} 132 133 134static void nl_destroy_handles(struct nl_handle **handle) 135{ 136 if (*handle == NULL) 137 return; 138 nl80211_handle_destroy(*handle); 139 *handle = NULL; 140} 141 142 143#ifndef IFF_LOWER_UP 144#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ 145#endif 146#ifndef IFF_DORMANT 147#define IFF_DORMANT 0x20000 /* driver signals dormant */ 148#endif 149 150#ifndef IF_OPER_DORMANT 151#define IF_OPER_DORMANT 5 152#endif 153#ifndef IF_OPER_UP 154#define IF_OPER_UP 6 155#endif 156 157struct nl80211_global { 158 struct dl_list interfaces; 159 int if_add_ifindex; 160 struct netlink_data *netlink; 161 struct nl_cb *nl_cb; 162 struct nl_handle *nl; 163 int nl80211_id; 164 int ioctl_sock; /* socket for ioctl() use */ 165 166 struct nl_handle *nl_event; 167}; 168 169struct nl80211_wiphy_data { 170 struct dl_list list; 171 struct dl_list bsss; 172 struct dl_list drvs; 173 174 struct nl_handle *nl_beacons; 175 struct nl_cb *nl_cb; 176 177 int wiphy_idx; 178}; 179 180static void nl80211_global_deinit(void *priv); 181 182struct i802_bss { 183 struct wpa_driver_nl80211_data *drv; 184 struct i802_bss *next; 185 int ifindex; 186 char ifname[IFNAMSIZ + 1]; 187 char brname[IFNAMSIZ]; 188 unsigned int beacon_set:1; 189 unsigned int added_if_into_bridge:1; 190 unsigned int added_bridge:1; 191 unsigned int in_deinit:1; 192 193 u8 addr[ETH_ALEN]; 194 195 int freq; 196 197 void *ctx; 198 struct nl_handle *nl_preq, *nl_mgmt; 199 struct nl_cb *nl_cb; 200 201 struct nl80211_wiphy_data *wiphy_data; 202 struct dl_list wiphy_list; 203}; 204 205struct wpa_driver_nl80211_data { 206 struct nl80211_global *global; 207 struct dl_list list; 208 struct dl_list wiphy_list; 209 char phyname[32]; 210 void *ctx; 211 int ifindex; 212 int if_removed; 213 int if_disabled; 214 int ignore_if_down_event; 215 struct rfkill_data *rfkill; 216 struct wpa_driver_capa capa; 217 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 unsigned int ignore_next_local_disconnect:1; 248 249 u64 remain_on_chan_cookie; 250 u64 send_action_cookie; 251 252 unsigned int last_mgmt_freq; 253 254 struct wpa_driver_scan_filter *filter_ssids; 255 size_t num_filter_ssids; 256 257 struct i802_bss first_bss; 258 259 int eapol_tx_sock; 260 261#ifdef HOSTAPD 262 int eapol_sock; /* socket for EAPOL frames */ 263 264 int default_if_indices[16]; 265 int *if_indices; 266 int num_if_indices; 267 268 int last_freq; 269 int last_freq_ht; 270#endif /* HOSTAPD */ 271 272 /* From failed authentication command */ 273 int auth_freq; 274 u8 auth_bssid_[ETH_ALEN]; 275 u8 auth_ssid[32]; 276 size_t auth_ssid_len; 277 int auth_alg; 278 u8 *auth_ie; 279 size_t auth_ie_len; 280 u8 auth_wep_key[4][16]; 281 size_t auth_wep_key_len[4]; 282 int auth_wep_tx_keyidx; 283 int auth_local_state_change; 284 int auth_p2p; 285}; 286 287 288static void wpa_driver_nl80211_deinit(struct i802_bss *bss); 289static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 290 void *timeout_ctx); 291static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 292 enum nl80211_iftype nlmode); 293static int 294wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); 295static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 296 const u8 *addr, int cmd, u16 reason_code, 297 int local_state_change); 298static void nl80211_remove_monitor_interface( 299 struct wpa_driver_nl80211_data *drv); 300static int nl80211_send_frame_cmd(struct i802_bss *bss, 301 unsigned int freq, unsigned int wait, 302 const u8 *buf, size_t buf_len, u64 *cookie, 303 int no_cck, int no_ack, int offchanok); 304static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, 305 int report); 306#ifdef ANDROID 307static int android_pno_start(struct i802_bss *bss, 308 struct wpa_driver_scan_params *params); 309static int android_pno_stop(struct i802_bss *bss); 310#endif /* ANDROID */ 311#ifdef ANDROID_P2P 312int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 313int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 314int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 315int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 316 const struct wpabuf *proberesp, 317 const struct wpabuf *assocresp); 318 319#endif 320#ifdef HOSTAPD 321static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 322static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 323static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 324static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 325 enum wpa_driver_if_type type, 326 const char *ifname); 327#else /* HOSTAPD */ 328static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 329{ 330} 331 332static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 333{ 334} 335 336static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 337{ 338 return 0; 339} 340#endif /* HOSTAPD */ 341#ifdef ANDROID 342extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 343 size_t buf_len); 344#endif 345 346static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 347 struct hostapd_freq_params *freq); 348static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 349 int ifindex, int disabled); 350 351static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 352static int wpa_driver_nl80211_authenticate_retry( 353 struct wpa_driver_nl80211_data *drv); 354 355 356static int is_ap_interface(enum nl80211_iftype nlmode) 357{ 358 return (nlmode == NL80211_IFTYPE_AP || 359 nlmode == NL80211_IFTYPE_P2P_GO); 360} 361 362 363static int is_sta_interface(enum nl80211_iftype nlmode) 364{ 365 return (nlmode == NL80211_IFTYPE_STATION || 366 nlmode == NL80211_IFTYPE_P2P_CLIENT); 367} 368 369 370static int is_p2p_interface(enum nl80211_iftype nlmode) 371{ 372 return (nlmode == NL80211_IFTYPE_P2P_CLIENT || 373 nlmode == NL80211_IFTYPE_P2P_GO); 374} 375 376 377struct nl80211_bss_info_arg { 378 struct wpa_driver_nl80211_data *drv; 379 struct wpa_scan_results *res; 380 unsigned int assoc_freq; 381 u8 assoc_bssid[ETH_ALEN]; 382}; 383 384static int bss_info_handler(struct nl_msg *msg, void *arg); 385 386 387/* nl80211 code */ 388static int ack_handler(struct nl_msg *msg, void *arg) 389{ 390 int *err = arg; 391 *err = 0; 392 return NL_STOP; 393} 394 395static int finish_handler(struct nl_msg *msg, void *arg) 396{ 397 int *ret = arg; 398 *ret = 0; 399 return NL_SKIP; 400} 401 402static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 403 void *arg) 404{ 405 int *ret = arg; 406 *ret = err->error; 407 return NL_SKIP; 408} 409 410 411static int no_seq_check(struct nl_msg *msg, void *arg) 412{ 413 return NL_OK; 414} 415 416 417static int send_and_recv(struct nl80211_global *global, 418 struct nl_handle *nl_handle, struct nl_msg *msg, 419 int (*valid_handler)(struct nl_msg *, void *), 420 void *valid_data) 421{ 422 struct nl_cb *cb; 423 int err = -ENOMEM; 424 425 cb = nl_cb_clone(global->nl_cb); 426 if (!cb) 427 goto out; 428 429 err = nl_send_auto_complete(nl_handle, msg); 430 if (err < 0) 431 goto out; 432 433 err = 1; 434 435 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 436 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 437 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 438 439 if (valid_handler) 440 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 441 valid_handler, valid_data); 442 443 while (err > 0) 444 nl_recvmsgs(nl_handle, cb); 445 out: 446 nl_cb_put(cb); 447 nlmsg_free(msg); 448 return err; 449} 450 451 452static int send_and_recv_msgs_global(struct nl80211_global *global, 453 struct nl_msg *msg, 454 int (*valid_handler)(struct nl_msg *, void *), 455 void *valid_data) 456{ 457 return send_and_recv(global, global->nl, msg, valid_handler, 458 valid_data); 459} 460 461 462#ifndef ANDROID 463static 464#endif 465int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 466 struct nl_msg *msg, 467 int (*valid_handler)(struct nl_msg *, void *), 468 void *valid_data) 469{ 470 return send_and_recv(drv->global, drv->global->nl, msg, 471 valid_handler, valid_data); 472} 473 474 475struct family_data { 476 const char *group; 477 int id; 478}; 479 480 481static int family_handler(struct nl_msg *msg, void *arg) 482{ 483 struct family_data *res = arg; 484 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 485 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 486 struct nlattr *mcgrp; 487 int i; 488 489 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 490 genlmsg_attrlen(gnlh, 0), NULL); 491 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 492 return NL_SKIP; 493 494 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 495 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 496 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 497 nla_len(mcgrp), NULL); 498 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 499 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 500 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 501 res->group, 502 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 503 continue; 504 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 505 break; 506 }; 507 508 return NL_SKIP; 509} 510 511 512static int nl_get_multicast_id(struct nl80211_global *global, 513 const char *family, const char *group) 514{ 515 struct nl_msg *msg; 516 int ret = -1; 517 struct family_data res = { group, -ENOENT }; 518 519 msg = nlmsg_alloc(); 520 if (!msg) 521 return -ENOMEM; 522 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 523 0, 0, CTRL_CMD_GETFAMILY, 0); 524 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 525 526 ret = send_and_recv_msgs_global(global, msg, family_handler, &res); 527 msg = NULL; 528 if (ret == 0) 529 ret = res.id; 530 531nla_put_failure: 532 nlmsg_free(msg); 533 return ret; 534} 535 536 537static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 538 struct nl_msg *msg, int flags, uint8_t cmd) 539{ 540 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 541 0, flags, cmd, 0); 542} 543 544 545struct wiphy_idx_data { 546 int wiphy_idx; 547}; 548 549 550static int netdev_info_handler(struct nl_msg *msg, void *arg) 551{ 552 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 553 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 554 struct wiphy_idx_data *info = arg; 555 556 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 557 genlmsg_attrlen(gnlh, 0), NULL); 558 559 if (tb[NL80211_ATTR_WIPHY]) 560 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 561 562 return NL_SKIP; 563} 564 565 566static int nl80211_get_wiphy_index(struct i802_bss *bss) 567{ 568 struct nl_msg *msg; 569 struct wiphy_idx_data data = { 570 .wiphy_idx = -1, 571 }; 572 573 msg = nlmsg_alloc(); 574 if (!msg) 575 return -1; 576 577 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 578 579 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 580 581 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 582 return data.wiphy_idx; 583 msg = NULL; 584nla_put_failure: 585 nlmsg_free(msg); 586 return -1; 587} 588 589 590static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 591 struct nl80211_wiphy_data *w) 592{ 593 struct nl_msg *msg; 594 int ret = -1; 595 596 msg = nlmsg_alloc(); 597 if (!msg) 598 return -1; 599 600 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); 601 602 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); 603 604 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 605 msg = NULL; 606 if (ret) { 607 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 608 "failed: ret=%d (%s)", 609 ret, strerror(-ret)); 610 goto nla_put_failure; 611 } 612 ret = 0; 613nla_put_failure: 614 nlmsg_free(msg); 615 return ret; 616} 617 618 619static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 620{ 621 struct nl80211_wiphy_data *w = eloop_ctx; 622 623 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 624 625 nl_recvmsgs(handle, w->nl_cb); 626} 627 628 629static int process_beacon_event(struct nl_msg *msg, void *arg) 630{ 631 struct nl80211_wiphy_data *w = arg; 632 struct wpa_driver_nl80211_data *drv; 633 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 634 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 635 union wpa_event_data event; 636 637 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 638 genlmsg_attrlen(gnlh, 0), NULL); 639 640 if (gnlh->cmd != NL80211_CMD_FRAME) { 641 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 642 gnlh->cmd); 643 return NL_SKIP; 644 } 645 646 if (!tb[NL80211_ATTR_FRAME]) 647 return NL_SKIP; 648 649 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 650 wiphy_list) { 651 os_memset(&event, 0, sizeof(event)); 652 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 653 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 654 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 655 } 656 657 return NL_SKIP; 658} 659 660 661static struct nl80211_wiphy_data * 662nl80211_get_wiphy_data_ap(struct i802_bss *bss) 663{ 664 static DEFINE_DL_LIST(nl80211_wiphys); 665 struct nl80211_wiphy_data *w; 666 int wiphy_idx, found = 0; 667 struct i802_bss *tmp_bss; 668 669 if (bss->wiphy_data != NULL) 670 return bss->wiphy_data; 671 672 wiphy_idx = nl80211_get_wiphy_index(bss); 673 674 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 675 if (w->wiphy_idx == wiphy_idx) 676 goto add; 677 } 678 679 /* alloc new one */ 680 w = os_zalloc(sizeof(*w)); 681 if (w == NULL) 682 return NULL; 683 w->wiphy_idx = wiphy_idx; 684 dl_list_init(&w->bsss); 685 dl_list_init(&w->drvs); 686 687 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 688 if (!w->nl_cb) { 689 os_free(w); 690 return NULL; 691 } 692 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 693 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, 694 w); 695 696 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 697 "wiphy beacons"); 698 if (w->nl_beacons == NULL) { 699 os_free(w); 700 return NULL; 701 } 702 703 if (nl80211_register_beacons(bss->drv, w)) { 704 nl_destroy_handles(&w->nl_beacons); 705 os_free(w); 706 return NULL; 707 } 708 709 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons), 710 nl80211_recv_beacons, w, w->nl_beacons); 711 712 dl_list_add(&nl80211_wiphys, &w->list); 713 714add: 715 /* drv entry for this bss already there? */ 716 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 717 if (tmp_bss->drv == bss->drv) { 718 found = 1; 719 break; 720 } 721 } 722 /* if not add it */ 723 if (!found) 724 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 725 726 dl_list_add(&w->bsss, &bss->wiphy_list); 727 bss->wiphy_data = w; 728 return w; 729} 730 731 732static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 733{ 734 struct nl80211_wiphy_data *w = bss->wiphy_data; 735 struct i802_bss *tmp_bss; 736 int found = 0; 737 738 if (w == NULL) 739 return; 740 bss->wiphy_data = NULL; 741 dl_list_del(&bss->wiphy_list); 742 743 /* still any for this drv present? */ 744 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 745 if (tmp_bss->drv == bss->drv) { 746 found = 1; 747 break; 748 } 749 } 750 /* if not remove it */ 751 if (!found) 752 dl_list_del(&bss->drv->wiphy_list); 753 754 if (!dl_list_empty(&w->bsss)) 755 return; 756 757 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons)); 758 759 nl_cb_put(w->nl_cb); 760 nl_destroy_handles(&w->nl_beacons); 761 dl_list_del(&w->list); 762 os_free(w); 763} 764 765 766static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 767{ 768 struct i802_bss *bss = priv; 769 struct wpa_driver_nl80211_data *drv = bss->drv; 770 if (!drv->associated) 771 return -1; 772 os_memcpy(bssid, drv->bssid, ETH_ALEN); 773 return 0; 774} 775 776 777static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 778{ 779 struct i802_bss *bss = priv; 780 struct wpa_driver_nl80211_data *drv = bss->drv; 781 if (!drv->associated) 782 return -1; 783 os_memcpy(ssid, drv->ssid, drv->ssid_len); 784 return drv->ssid_len; 785} 786 787 788static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, 789 char *buf, size_t len, int del) 790{ 791 union wpa_event_data event; 792 793 os_memset(&event, 0, sizeof(event)); 794 if (len > sizeof(event.interface_status.ifname)) 795 len = sizeof(event.interface_status.ifname) - 1; 796 os_memcpy(event.interface_status.ifname, buf, len); 797 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : 798 EVENT_INTERFACE_ADDED; 799 800 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", 801 del ? "DEL" : "NEW", 802 event.interface_status.ifname, 803 del ? "removed" : "added"); 804 805 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) { 806 if (del) { 807 if (drv->if_removed) { 808 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 809 "already set - ignore event"); 810 return; 811 } 812 drv->if_removed = 1; 813 } else { 814 if (if_nametoindex(drv->first_bss.ifname) == 0) { 815 wpa_printf(MSG_DEBUG, "nl80211: Interface %s " 816 "does not exist - ignore " 817 "RTM_NEWLINK", 818 drv->first_bss.ifname); 819 return; 820 } 821 if (!drv->if_removed) { 822 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 823 "already cleared - ignore event"); 824 return; 825 } 826 drv->if_removed = 0; 827 } 828 } 829 830 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 831} 832 833 834static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 835 u8 *buf, size_t len) 836{ 837 int attrlen, rta_len; 838 struct rtattr *attr; 839 840 attrlen = len; 841 attr = (struct rtattr *) buf; 842 843 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 844 while (RTA_OK(attr, attrlen)) { 845 if (attr->rta_type == IFLA_IFNAME) { 846 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname) 847 == 0) 848 return 1; 849 else 850 break; 851 } 852 attr = RTA_NEXT(attr, attrlen); 853 } 854 855 return 0; 856} 857 858 859static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 860 int ifindex, u8 *buf, size_t len) 861{ 862 if (drv->ifindex == ifindex) 863 return 1; 864 865 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 866 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname); 867 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 868 "interface"); 869 wpa_driver_nl80211_finish_drv_init(drv); 870 return 1; 871 } 872 873 return 0; 874} 875 876 877static struct wpa_driver_nl80211_data * 878nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 879{ 880 struct wpa_driver_nl80211_data *drv; 881 dl_list_for_each(drv, &global->interfaces, 882 struct wpa_driver_nl80211_data, list) { 883 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 884 have_ifidx(drv, idx)) 885 return drv; 886 } 887 return NULL; 888} 889 890 891static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 892 struct ifinfomsg *ifi, 893 u8 *buf, size_t len) 894{ 895 struct nl80211_global *global = ctx; 896 struct wpa_driver_nl80211_data *drv; 897 int attrlen, rta_len; 898 struct rtattr *attr; 899 u32 brid = 0; 900 char namebuf[IFNAMSIZ]; 901 902 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 903 if (!drv) { 904 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " 905 "ifindex %d", ifi->ifi_index); 906 return; 907 } 908 909 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " 910 "(%s%s%s%s)", 911 drv->operstate, ifi->ifi_flags, 912 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 913 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 914 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 915 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 916 917 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 918 if (if_indextoname(ifi->ifi_index, namebuf) && 919 linux_iface_up(drv->global->ioctl_sock, 920 drv->first_bss.ifname) > 0) { 921 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 922 "event since interface %s is up", namebuf); 923 return; 924 } 925 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 926 if (drv->ignore_if_down_event) { 927 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 928 "event generated by mode change"); 929 drv->ignore_if_down_event = 0; 930 } else { 931 drv->if_disabled = 1; 932 wpa_supplicant_event(drv->ctx, 933 EVENT_INTERFACE_DISABLED, NULL); 934 } 935 } 936 937 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 938 if (if_indextoname(ifi->ifi_index, namebuf) && 939 linux_iface_up(drv->global->ioctl_sock, 940 drv->first_bss.ifname) == 0) { 941 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 942 "event since interface %s is down", 943 namebuf); 944 } else if (if_nametoindex(drv->first_bss.ifname) == 0) { 945 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 946 "event since interface %s does not exist", 947 drv->first_bss.ifname); 948 } else if (drv->if_removed) { 949 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 950 "event since interface %s is marked " 951 "removed", drv->first_bss.ifname); 952 } else { 953 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 954 drv->if_disabled = 0; 955 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 956 NULL); 957 } 958 } 959 960 /* 961 * Some drivers send the association event before the operup event--in 962 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 963 * fails. This will hit us when wpa_supplicant does not need to do 964 * IEEE 802.1X authentication 965 */ 966 if (drv->operstate == 1 && 967 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 968 !(ifi->ifi_flags & IFF_RUNNING)) 969 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 970 -1, IF_OPER_UP); 971 972 attrlen = len; 973 attr = (struct rtattr *) buf; 974 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 975 while (RTA_OK(attr, attrlen)) { 976 if (attr->rta_type == IFLA_IFNAME) { 977 wpa_driver_nl80211_event_link( 978 drv, 979 ((char *) attr) + rta_len, 980 attr->rta_len - rta_len, 0); 981 } else if (attr->rta_type == IFLA_MASTER) 982 brid = nla_get_u32((struct nlattr *) attr); 983 attr = RTA_NEXT(attr, attrlen); 984 } 985 986 if (ifi->ifi_family == AF_BRIDGE && brid) { 987 /* device has been added to bridge */ 988 if_indextoname(brid, namebuf); 989 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 990 brid, namebuf); 991 add_ifidx(drv, brid); 992 } 993} 994 995 996static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 997 struct ifinfomsg *ifi, 998 u8 *buf, size_t len) 999{ 1000 struct nl80211_global *global = ctx; 1001 struct wpa_driver_nl80211_data *drv; 1002 int attrlen, rta_len; 1003 struct rtattr *attr; 1004 u32 brid = 0; 1005 1006 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1007 if (!drv) { 1008 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for " 1009 "foreign ifindex %d", ifi->ifi_index); 1010 return; 1011 } 1012 1013 attrlen = len; 1014 attr = (struct rtattr *) buf; 1015 1016 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1017 while (RTA_OK(attr, attrlen)) { 1018 if (attr->rta_type == IFLA_IFNAME) { 1019 wpa_driver_nl80211_event_link( 1020 drv, 1021 ((char *) attr) + rta_len, 1022 attr->rta_len - rta_len, 1); 1023 } else if (attr->rta_type == IFLA_MASTER) 1024 brid = nla_get_u32((struct nlattr *) attr); 1025 attr = RTA_NEXT(attr, attrlen); 1026 } 1027 1028 if (ifi->ifi_family == AF_BRIDGE && brid) { 1029 /* device has been removed from bridge */ 1030 char namebuf[IFNAMSIZ]; 1031 if_indextoname(brid, namebuf); 1032 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 1033 "%s", brid, namebuf); 1034 del_ifidx(drv, brid); 1035 } 1036} 1037 1038 1039static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 1040 const u8 *frame, size_t len) 1041{ 1042 const struct ieee80211_mgmt *mgmt; 1043 union wpa_event_data event; 1044 1045 wpa_printf(MSG_DEBUG, "nl80211: Authenticate event"); 1046 mgmt = (const struct ieee80211_mgmt *) frame; 1047 if (len < 24 + sizeof(mgmt->u.auth)) { 1048 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1049 "frame"); 1050 return; 1051 } 1052 1053 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 1054 os_memset(&event, 0, sizeof(event)); 1055 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 1056 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 1057 event.auth.auth_transaction = 1058 le_to_host16(mgmt->u.auth.auth_transaction); 1059 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 1060 if (len > 24 + sizeof(mgmt->u.auth)) { 1061 event.auth.ies = mgmt->u.auth.variable; 1062 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 1063 } 1064 1065 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 1066} 1067 1068 1069static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1070{ 1071 struct nl_msg *msg; 1072 int ret; 1073 struct nl80211_bss_info_arg arg; 1074 1075 os_memset(&arg, 0, sizeof(arg)); 1076 msg = nlmsg_alloc(); 1077 if (!msg) 1078 goto nla_put_failure; 1079 1080 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1081 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1082 1083 arg.drv = drv; 1084 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 1085 msg = NULL; 1086 if (ret == 0) { 1087 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1088 "associated BSS from scan results: %u MHz", 1089 arg.assoc_freq); 1090 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq; 1091 } 1092 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1093 "(%s)", ret, strerror(-ret)); 1094nla_put_failure: 1095 nlmsg_free(msg); 1096 return drv->assoc_freq; 1097} 1098 1099 1100static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 1101 const u8 *frame, size_t len) 1102{ 1103 const struct ieee80211_mgmt *mgmt; 1104 union wpa_event_data event; 1105 u16 status; 1106 1107 wpa_printf(MSG_DEBUG, "nl80211: Associate event"); 1108 mgmt = (const struct ieee80211_mgmt *) frame; 1109 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 1110 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1111 "frame"); 1112 return; 1113 } 1114 1115 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1116 if (status != WLAN_STATUS_SUCCESS) { 1117 os_memset(&event, 0, sizeof(event)); 1118 event.assoc_reject.bssid = mgmt->bssid; 1119 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1120 event.assoc_reject.resp_ies = 1121 (u8 *) mgmt->u.assoc_resp.variable; 1122 event.assoc_reject.resp_ies_len = 1123 len - 24 - sizeof(mgmt->u.assoc_resp); 1124 } 1125 event.assoc_reject.status_code = status; 1126 1127 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1128 return; 1129 } 1130 1131 drv->associated = 1; 1132 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 1133 1134 os_memset(&event, 0, sizeof(event)); 1135 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1136 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 1137 event.assoc_info.resp_ies_len = 1138 len - 24 - sizeof(mgmt->u.assoc_resp); 1139 } 1140 1141 event.assoc_info.freq = drv->assoc_freq; 1142 1143 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1144} 1145 1146 1147static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 1148 enum nl80211_commands cmd, struct nlattr *status, 1149 struct nlattr *addr, struct nlattr *req_ie, 1150 struct nlattr *resp_ie) 1151{ 1152 union wpa_event_data event; 1153 1154 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1155 /* 1156 * Avoid reporting two association events that would confuse 1157 * the core code. 1158 */ 1159 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 1160 "when using userspace SME", cmd); 1161 return; 1162 } 1163 1164 if (cmd == NL80211_CMD_CONNECT) 1165 wpa_printf(MSG_DEBUG, "nl80211: Connect event"); 1166 else if (cmd == NL80211_CMD_ROAM) 1167 wpa_printf(MSG_DEBUG, "nl80211: Roam event"); 1168 1169 os_memset(&event, 0, sizeof(event)); 1170 if (cmd == NL80211_CMD_CONNECT && 1171 nla_get_u16(status) != WLAN_STATUS_SUCCESS) { 1172 if (addr) 1173 event.assoc_reject.bssid = nla_data(addr); 1174 if (resp_ie) { 1175 event.assoc_reject.resp_ies = nla_data(resp_ie); 1176 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 1177 } 1178 event.assoc_reject.status_code = nla_get_u16(status); 1179 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1180 return; 1181 } 1182 1183 drv->associated = 1; 1184 if (addr) 1185 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 1186 1187 if (req_ie) { 1188 event.assoc_info.req_ies = nla_data(req_ie); 1189 event.assoc_info.req_ies_len = nla_len(req_ie); 1190 } 1191 if (resp_ie) { 1192 event.assoc_info.resp_ies = nla_data(resp_ie); 1193 event.assoc_info.resp_ies_len = nla_len(resp_ie); 1194 } 1195 1196 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 1197 1198 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1199} 1200 1201 1202static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, 1203 struct nlattr *reason, struct nlattr *addr, 1204 struct nlattr *by_ap) 1205{ 1206 union wpa_event_data data; 1207 unsigned int locally_generated = by_ap == NULL; 1208 1209 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1210 /* 1211 * Avoid reporting two disassociation events that could 1212 * confuse the core code. 1213 */ 1214 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1215 "event when using userspace SME"); 1216 return; 1217 } 1218 1219 if (drv->ignore_next_local_disconnect) { 1220 drv->ignore_next_local_disconnect = 0; 1221 if (locally_generated) { 1222 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1223 "event triggered during reassociation"); 1224 return; 1225 } 1226 wpa_printf(MSG_WARNING, "nl80211: Was expecting local " 1227 "disconnect but got another disconnect " 1228 "event first"); 1229 } 1230 1231 wpa_printf(MSG_DEBUG, "nl80211: Disconnect event"); 1232 drv->associated = 0; 1233 os_memset(&data, 0, sizeof(data)); 1234 if (reason) 1235 data.deauth_info.reason_code = nla_get_u16(reason); 1236 data.deauth_info.locally_generated = by_ap == NULL; 1237 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data); 1238} 1239 1240 1241static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv, 1242 struct nlattr *freq, struct nlattr *type) 1243{ 1244 union wpa_event_data data; 1245 int ht_enabled = 1; 1246 int chan_offset = 0; 1247 1248 wpa_printf(MSG_DEBUG, "nl80211: Channel switch event"); 1249 1250 if (!freq || !type) 1251 return; 1252 1253 switch (nla_get_u32(type)) { 1254 case NL80211_CHAN_NO_HT: 1255 ht_enabled = 0; 1256 break; 1257 case NL80211_CHAN_HT20: 1258 break; 1259 case NL80211_CHAN_HT40PLUS: 1260 chan_offset = 1; 1261 break; 1262 case NL80211_CHAN_HT40MINUS: 1263 chan_offset = -1; 1264 break; 1265 } 1266 1267 data.ch_switch.freq = nla_get_u32(freq); 1268 data.ch_switch.ht_enabled = ht_enabled; 1269 data.ch_switch.ch_offset = chan_offset; 1270 1271 wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data); 1272} 1273 1274 1275static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 1276 enum nl80211_commands cmd, struct nlattr *addr) 1277{ 1278 union wpa_event_data event; 1279 enum wpa_event_type ev; 1280 1281 if (nla_len(addr) != ETH_ALEN) 1282 return; 1283 1284 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 1285 cmd, MAC2STR((u8 *) nla_data(addr))); 1286 1287 if (cmd == NL80211_CMD_AUTHENTICATE) 1288 ev = EVENT_AUTH_TIMED_OUT; 1289 else if (cmd == NL80211_CMD_ASSOCIATE) 1290 ev = EVENT_ASSOC_TIMED_OUT; 1291 else 1292 return; 1293 1294 os_memset(&event, 0, sizeof(event)); 1295 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 1296 wpa_supplicant_event(drv->ctx, ev, &event); 1297} 1298 1299 1300static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, 1301 struct nlattr *freq, struct nlattr *sig, 1302 const u8 *frame, size_t len) 1303{ 1304 const struct ieee80211_mgmt *mgmt; 1305 union wpa_event_data event; 1306 u16 fc, stype; 1307 int ssi_signal = 0; 1308 1309 wpa_printf(MSG_DEBUG, "nl80211: Frame event"); 1310 mgmt = (const struct ieee80211_mgmt *) frame; 1311 if (len < 24) { 1312 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); 1313 return; 1314 } 1315 1316 fc = le_to_host16(mgmt->frame_control); 1317 stype = WLAN_FC_GET_STYPE(fc); 1318 1319 if (sig) 1320 ssi_signal = (s32) nla_get_u32(sig); 1321 1322 os_memset(&event, 0, sizeof(event)); 1323 if (freq) { 1324 event.rx_action.freq = nla_get_u32(freq); 1325 drv->last_mgmt_freq = event.rx_action.freq; 1326 } 1327 if (stype == WLAN_FC_STYPE_ACTION) { 1328 event.rx_action.da = mgmt->da; 1329 event.rx_action.sa = mgmt->sa; 1330 event.rx_action.bssid = mgmt->bssid; 1331 event.rx_action.category = mgmt->u.action.category; 1332 event.rx_action.data = &mgmt->u.action.category + 1; 1333 event.rx_action.len = frame + len - event.rx_action.data; 1334 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); 1335 } else { 1336 event.rx_mgmt.frame = frame; 1337 event.rx_mgmt.frame_len = len; 1338 event.rx_mgmt.ssi_signal = ssi_signal; 1339 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 1340 } 1341} 1342 1343 1344static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, 1345 struct nlattr *cookie, const u8 *frame, 1346 size_t len, struct nlattr *ack) 1347{ 1348 union wpa_event_data event; 1349 const struct ieee80211_hdr *hdr; 1350 u16 fc; 1351 1352 wpa_printf(MSG_DEBUG, "nl80211: Frame TX status event"); 1353 if (!is_ap_interface(drv->nlmode)) { 1354 u64 cookie_val; 1355 1356 if (!cookie) 1357 return; 1358 1359 cookie_val = nla_get_u64(cookie); 1360 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" 1361 " cookie=0%llx%s (ack=%d)", 1362 (long long unsigned int) cookie_val, 1363 cookie_val == drv->send_action_cookie ? 1364 " (match)" : " (unknown)", ack != NULL); 1365 if (cookie_val != drv->send_action_cookie) 1366 return; 1367 } 1368 1369 hdr = (const struct ieee80211_hdr *) frame; 1370 fc = le_to_host16(hdr->frame_control); 1371 1372 os_memset(&event, 0, sizeof(event)); 1373 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 1374 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 1375 event.tx_status.dst = hdr->addr1; 1376 event.tx_status.data = frame; 1377 event.tx_status.data_len = len; 1378 event.tx_status.ack = ack != NULL; 1379 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 1380} 1381 1382 1383static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 1384 enum wpa_event_type type, 1385 const u8 *frame, size_t len) 1386{ 1387 const struct ieee80211_mgmt *mgmt; 1388 union wpa_event_data event; 1389 const u8 *bssid = NULL; 1390 u16 reason_code = 0; 1391 1392 if (type == EVENT_DEAUTH) 1393 wpa_printf(MSG_DEBUG, "nl80211: Deauthenticate event"); 1394 else 1395 wpa_printf(MSG_DEBUG, "nl80211: Disassociate event"); 1396 1397 mgmt = (const struct ieee80211_mgmt *) frame; 1398 if (len >= 24) { 1399 bssid = mgmt->bssid; 1400 1401 if (drv->associated != 0 && 1402 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 1403 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 1404 /* 1405 * We have presumably received this deauth as a 1406 * response to a clear_state_mismatch() outgoing 1407 * deauth. Don't let it take us offline! 1408 */ 1409 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 1410 "from Unknown BSSID " MACSTR " -- ignoring", 1411 MAC2STR(bssid)); 1412 return; 1413 } 1414 } 1415 1416 drv->associated = 0; 1417 os_memset(&event, 0, sizeof(event)); 1418 1419 /* Note: Same offset for Reason Code in both frame subtypes */ 1420 if (len >= 24 + sizeof(mgmt->u.deauth)) 1421 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1422 1423 if (type == EVENT_DISASSOC) { 1424 event.disassoc_info.locally_generated = 1425 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1426 event.disassoc_info.addr = bssid; 1427 event.disassoc_info.reason_code = reason_code; 1428 if (frame + len > mgmt->u.disassoc.variable) { 1429 event.disassoc_info.ie = mgmt->u.disassoc.variable; 1430 event.disassoc_info.ie_len = frame + len - 1431 mgmt->u.disassoc.variable; 1432 } 1433 } else { 1434 event.deauth_info.locally_generated = 1435 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1436 event.deauth_info.addr = bssid; 1437 event.deauth_info.reason_code = reason_code; 1438 if (frame + len > mgmt->u.deauth.variable) { 1439 event.deauth_info.ie = mgmt->u.deauth.variable; 1440 event.deauth_info.ie_len = frame + len - 1441 mgmt->u.deauth.variable; 1442 } 1443 } 1444 1445 wpa_supplicant_event(drv->ctx, type, &event); 1446} 1447 1448 1449static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 1450 enum wpa_event_type type, 1451 const u8 *frame, size_t len) 1452{ 1453 const struct ieee80211_mgmt *mgmt; 1454 union wpa_event_data event; 1455 u16 reason_code = 0; 1456 1457 if (type == EVENT_UNPROT_DEAUTH) 1458 wpa_printf(MSG_DEBUG, "nl80211: Unprot Deauthenticate event"); 1459 else 1460 wpa_printf(MSG_DEBUG, "nl80211: Unprot Disassociate event"); 1461 1462 if (len < 24) 1463 return; 1464 1465 mgmt = (const struct ieee80211_mgmt *) frame; 1466 1467 os_memset(&event, 0, sizeof(event)); 1468 /* Note: Same offset for Reason Code in both frame subtypes */ 1469 if (len >= 24 + sizeof(mgmt->u.deauth)) 1470 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1471 1472 if (type == EVENT_UNPROT_DISASSOC) { 1473 event.unprot_disassoc.sa = mgmt->sa; 1474 event.unprot_disassoc.da = mgmt->da; 1475 event.unprot_disassoc.reason_code = reason_code; 1476 } else { 1477 event.unprot_deauth.sa = mgmt->sa; 1478 event.unprot_deauth.da = mgmt->da; 1479 event.unprot_deauth.reason_code = reason_code; 1480 } 1481 1482 wpa_supplicant_event(drv->ctx, type, &event); 1483} 1484 1485 1486static void mlme_event(struct wpa_driver_nl80211_data *drv, 1487 enum nl80211_commands cmd, struct nlattr *frame, 1488 struct nlattr *addr, struct nlattr *timed_out, 1489 struct nlattr *freq, struct nlattr *ack, 1490 struct nlattr *cookie, struct nlattr *sig) 1491{ 1492 if (timed_out && addr) { 1493 mlme_timeout_event(drv, cmd, addr); 1494 return; 1495 } 1496 1497 if (frame == NULL) { 1498 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " 1499 "data", cmd); 1500 return; 1501 } 1502 1503 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd); 1504 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 1505 nla_data(frame), nla_len(frame)); 1506 1507 switch (cmd) { 1508 case NL80211_CMD_AUTHENTICATE: 1509 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1510 break; 1511 case NL80211_CMD_ASSOCIATE: 1512 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1513 break; 1514 case NL80211_CMD_DEAUTHENTICATE: 1515 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1516 nla_data(frame), nla_len(frame)); 1517 break; 1518 case NL80211_CMD_DISASSOCIATE: 1519 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1520 nla_data(frame), nla_len(frame)); 1521 break; 1522 case NL80211_CMD_FRAME: 1523 mlme_event_mgmt(drv, freq, sig, nla_data(frame), 1524 nla_len(frame)); 1525 break; 1526 case NL80211_CMD_FRAME_TX_STATUS: 1527 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 1528 nla_len(frame), ack); 1529 break; 1530 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1531 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1532 nla_data(frame), nla_len(frame)); 1533 break; 1534 case NL80211_CMD_UNPROT_DISASSOCIATE: 1535 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1536 nla_data(frame), nla_len(frame)); 1537 break; 1538 default: 1539 break; 1540 } 1541} 1542 1543 1544static void mlme_event_michael_mic_failure(struct i802_bss *bss, 1545 struct nlattr *tb[]) 1546{ 1547 union wpa_event_data data; 1548 1549 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1550 os_memset(&data, 0, sizeof(data)); 1551 if (tb[NL80211_ATTR_MAC]) { 1552 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1553 nla_data(tb[NL80211_ATTR_MAC]), 1554 nla_len(tb[NL80211_ATTR_MAC])); 1555 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1556 } 1557 if (tb[NL80211_ATTR_KEY_SEQ]) { 1558 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1559 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1560 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1561 } 1562 if (tb[NL80211_ATTR_KEY_TYPE]) { 1563 enum nl80211_key_type key_type = 1564 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1565 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1566 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1567 data.michael_mic_failure.unicast = 1; 1568 } else 1569 data.michael_mic_failure.unicast = 1; 1570 1571 if (tb[NL80211_ATTR_KEY_IDX]) { 1572 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1573 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1574 } 1575 1576 wpa_supplicant_event(bss->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1577} 1578 1579 1580static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1581 struct nlattr *tb[]) 1582{ 1583 if (tb[NL80211_ATTR_MAC] == NULL) { 1584 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1585 "event"); 1586 return; 1587 } 1588 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1589 drv->associated = 1; 1590 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1591 MAC2STR(drv->bssid)); 1592 1593 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1594} 1595 1596 1597static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1598 int cancel_event, struct nlattr *tb[]) 1599{ 1600 unsigned int freq, chan_type, duration; 1601 union wpa_event_data data; 1602 u64 cookie; 1603 1604 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1605 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1606 else 1607 freq = 0; 1608 1609 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1610 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1611 else 1612 chan_type = 0; 1613 1614 if (tb[NL80211_ATTR_DURATION]) 1615 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1616 else 1617 duration = 0; 1618 1619 if (tb[NL80211_ATTR_COOKIE]) 1620 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1621 else 1622 cookie = 0; 1623 1624 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1625 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1626 cancel_event, freq, chan_type, duration, 1627 (long long unsigned int) cookie, 1628 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1629 1630 if (cookie != drv->remain_on_chan_cookie) 1631 return; /* not for us */ 1632 1633 if (cancel_event) 1634 drv->pending_remain_on_chan = 0; 1635 1636 os_memset(&data, 0, sizeof(data)); 1637 data.remain_on_channel.freq = freq; 1638 data.remain_on_channel.duration = duration; 1639 wpa_supplicant_event(drv->ctx, cancel_event ? 1640 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1641 EVENT_REMAIN_ON_CHANNEL, &data); 1642} 1643 1644 1645static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1646 struct nlattr *tb[]) 1647{ 1648 union wpa_event_data event; 1649 struct nlattr *nl; 1650 int rem; 1651 struct scan_info *info; 1652#define MAX_REPORT_FREQS 50 1653 int freqs[MAX_REPORT_FREQS]; 1654 int num_freqs = 0; 1655 1656 if (drv->scan_for_auth) { 1657 drv->scan_for_auth = 0; 1658 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1659 "cfg80211 BSS entry"); 1660 wpa_driver_nl80211_authenticate_retry(drv); 1661 return; 1662 } 1663 1664 os_memset(&event, 0, sizeof(event)); 1665 info = &event.scan_info; 1666 info->aborted = aborted; 1667 1668 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1669 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1670 struct wpa_driver_scan_ssid *s = 1671 &info->ssids[info->num_ssids]; 1672 s->ssid = nla_data(nl); 1673 s->ssid_len = nla_len(nl); 1674 info->num_ssids++; 1675 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1676 break; 1677 } 1678 } 1679 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1680 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1681 { 1682 freqs[num_freqs] = nla_get_u32(nl); 1683 num_freqs++; 1684 if (num_freqs == MAX_REPORT_FREQS - 1) 1685 break; 1686 } 1687 info->freqs = freqs; 1688 info->num_freqs = num_freqs; 1689 } 1690 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1691} 1692 1693 1694static int get_link_signal(struct nl_msg *msg, void *arg) 1695{ 1696 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1697 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1698 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1699 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1700 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1701 }; 1702 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1703 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1704 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1705 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1706 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1707 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1708 }; 1709 struct wpa_signal_info *sig_change = arg; 1710 1711 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1712 genlmsg_attrlen(gnlh, 0), NULL); 1713 if (!tb[NL80211_ATTR_STA_INFO] || 1714 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1715 tb[NL80211_ATTR_STA_INFO], policy)) 1716 return NL_SKIP; 1717 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1718 return NL_SKIP; 1719 1720 sig_change->current_signal = 1721 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1722 1723 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1724 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1725 sinfo[NL80211_STA_INFO_TX_BITRATE], 1726 rate_policy)) { 1727 sig_change->current_txrate = 0; 1728 } else { 1729 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1730 sig_change->current_txrate = 1731 nla_get_u16(rinfo[ 1732 NL80211_RATE_INFO_BITRATE]) * 100; 1733 } 1734 } 1735 } 1736 1737 return NL_SKIP; 1738} 1739 1740 1741static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1742 struct wpa_signal_info *sig) 1743{ 1744 struct nl_msg *msg; 1745 1746 sig->current_signal = -9999; 1747 sig->current_txrate = 0; 1748 1749 msg = nlmsg_alloc(); 1750 if (!msg) 1751 return -ENOMEM; 1752 1753 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 1754 1755 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1756 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1757 1758 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1759 nla_put_failure: 1760 nlmsg_free(msg); 1761 return -ENOBUFS; 1762} 1763 1764 1765static int get_link_noise(struct nl_msg *msg, void *arg) 1766{ 1767 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1768 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1769 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1770 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1771 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1772 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1773 }; 1774 struct wpa_signal_info *sig_change = arg; 1775 1776 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1777 genlmsg_attrlen(gnlh, 0), NULL); 1778 1779 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1780 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1781 return NL_SKIP; 1782 } 1783 1784 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1785 tb[NL80211_ATTR_SURVEY_INFO], 1786 survey_policy)) { 1787 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1788 "attributes!"); 1789 return NL_SKIP; 1790 } 1791 1792 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1793 return NL_SKIP; 1794 1795 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1796 sig_change->frequency) 1797 return NL_SKIP; 1798 1799 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1800 return NL_SKIP; 1801 1802 sig_change->current_noise = 1803 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1804 1805 return NL_SKIP; 1806} 1807 1808 1809static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1810 struct wpa_signal_info *sig_change) 1811{ 1812 struct nl_msg *msg; 1813 1814 sig_change->current_noise = 9999; 1815 sig_change->frequency = drv->assoc_freq; 1816 1817 msg = nlmsg_alloc(); 1818 if (!msg) 1819 return -ENOMEM; 1820 1821 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1822 1823 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1824 1825 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1826 nla_put_failure: 1827 nlmsg_free(msg); 1828 return -ENOBUFS; 1829} 1830 1831 1832static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 1833{ 1834 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1835 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1836 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1837 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1838 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1839 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1840 }; 1841 struct wpa_scan_results *scan_results = arg; 1842 struct wpa_scan_res *scan_res; 1843 size_t i; 1844 1845 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1846 genlmsg_attrlen(gnlh, 0), NULL); 1847 1848 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1849 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 1850 return NL_SKIP; 1851 } 1852 1853 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1854 tb[NL80211_ATTR_SURVEY_INFO], 1855 survey_policy)) { 1856 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 1857 "attributes"); 1858 return NL_SKIP; 1859 } 1860 1861 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1862 return NL_SKIP; 1863 1864 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1865 return NL_SKIP; 1866 1867 for (i = 0; i < scan_results->num; ++i) { 1868 scan_res = scan_results->res[i]; 1869 if (!scan_res) 1870 continue; 1871 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1872 scan_res->freq) 1873 continue; 1874 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 1875 continue; 1876 scan_res->noise = (s8) 1877 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1878 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 1879 } 1880 1881 return NL_SKIP; 1882} 1883 1884 1885static int nl80211_get_noise_for_scan_results( 1886 struct wpa_driver_nl80211_data *drv, 1887 struct wpa_scan_results *scan_res) 1888{ 1889 struct nl_msg *msg; 1890 1891 msg = nlmsg_alloc(); 1892 if (!msg) 1893 return -ENOMEM; 1894 1895 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1896 1897 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1898 1899 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 1900 scan_res); 1901 nla_put_failure: 1902 nlmsg_free(msg); 1903 return -ENOBUFS; 1904} 1905 1906 1907static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1908 struct nlattr *tb[]) 1909{ 1910 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1911 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1912 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1913 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1914 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1915 }; 1916 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1917 enum nl80211_cqm_rssi_threshold_event event; 1918 union wpa_event_data ed; 1919 struct wpa_signal_info sig; 1920 int res; 1921 1922 if (tb[NL80211_ATTR_CQM] == NULL || 1923 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1924 cqm_policy)) { 1925 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1926 return; 1927 } 1928 1929 os_memset(&ed, 0, sizeof(ed)); 1930 1931 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1932 if (!tb[NL80211_ATTR_MAC]) 1933 return; 1934 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1935 ETH_ALEN); 1936 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1937 return; 1938 } 1939 1940 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1941 return; 1942 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1943 1944 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1945 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1946 "event: RSSI high"); 1947 ed.signal_change.above_threshold = 1; 1948 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1949 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1950 "event: RSSI low"); 1951 ed.signal_change.above_threshold = 0; 1952 } else 1953 return; 1954 1955 res = nl80211_get_link_signal(drv, &sig); 1956 if (res == 0) { 1957 ed.signal_change.current_signal = sig.current_signal; 1958 ed.signal_change.current_txrate = sig.current_txrate; 1959 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 1960 sig.current_signal, sig.current_txrate); 1961 } 1962 1963 res = nl80211_get_link_noise(drv, &sig); 1964 if (res == 0) { 1965 ed.signal_change.current_noise = sig.current_noise; 1966 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 1967 sig.current_noise); 1968 } 1969 1970 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 1971} 1972 1973 1974static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 1975 struct nlattr **tb) 1976{ 1977 u8 *addr; 1978 union wpa_event_data data; 1979 1980 if (tb[NL80211_ATTR_MAC] == NULL) 1981 return; 1982 addr = nla_data(tb[NL80211_ATTR_MAC]); 1983 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 1984 1985 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 1986 u8 *ies = NULL; 1987 size_t ies_len = 0; 1988 if (tb[NL80211_ATTR_IE]) { 1989 ies = nla_data(tb[NL80211_ATTR_IE]); 1990 ies_len = nla_len(tb[NL80211_ATTR_IE]); 1991 } 1992 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 1993 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 1994 return; 1995 } 1996 1997 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1998 return; 1999 2000 os_memset(&data, 0, sizeof(data)); 2001 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 2002 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 2003} 2004 2005 2006static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 2007 struct nlattr **tb) 2008{ 2009 u8 *addr; 2010 union wpa_event_data data; 2011 2012 if (tb[NL80211_ATTR_MAC] == NULL) 2013 return; 2014 addr = nla_data(tb[NL80211_ATTR_MAC]); 2015 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 2016 MAC2STR(addr)); 2017 2018 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2019 drv_event_disassoc(drv->ctx, addr); 2020 return; 2021 } 2022 2023 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2024 return; 2025 2026 os_memset(&data, 0, sizeof(data)); 2027 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 2028 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 2029} 2030 2031 2032static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 2033 struct nlattr **tb) 2034{ 2035 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 2036 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 2037 [NL80211_REKEY_DATA_KEK] = { 2038 .minlen = NL80211_KEK_LEN, 2039 .maxlen = NL80211_KEK_LEN, 2040 }, 2041 [NL80211_REKEY_DATA_KCK] = { 2042 .minlen = NL80211_KCK_LEN, 2043 .maxlen = NL80211_KCK_LEN, 2044 }, 2045 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2046 .minlen = NL80211_REPLAY_CTR_LEN, 2047 .maxlen = NL80211_REPLAY_CTR_LEN, 2048 }, 2049 }; 2050 union wpa_event_data data; 2051 2052 if (!tb[NL80211_ATTR_MAC]) 2053 return; 2054 if (!tb[NL80211_ATTR_REKEY_DATA]) 2055 return; 2056 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2057 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2058 return; 2059 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2060 return; 2061 2062 os_memset(&data, 0, sizeof(data)); 2063 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2064 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2065 MAC2STR(data.driver_gtk_rekey.bssid)); 2066 data.driver_gtk_rekey.replay_ctr = 2067 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2068 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2069 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2070 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2071} 2072 2073 2074static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2075 struct nlattr **tb) 2076{ 2077 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2078 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2079 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2080 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2081 .minlen = ETH_ALEN, 2082 .maxlen = ETH_ALEN, 2083 }, 2084 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2085 }; 2086 union wpa_event_data data; 2087 2088 wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event"); 2089 2090 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2091 return; 2092 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2093 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2094 return; 2095 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2096 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2097 return; 2098 2099 os_memset(&data, 0, sizeof(data)); 2100 os_memcpy(data.pmkid_candidate.bssid, 2101 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2102 data.pmkid_candidate.index = 2103 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2104 data.pmkid_candidate.preauth = 2105 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2106 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2107} 2108 2109 2110static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2111 struct nlattr **tb) 2112{ 2113 union wpa_event_data data; 2114 2115 wpa_printf(MSG_DEBUG, "nl80211: Probe client event"); 2116 2117 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2118 return; 2119 2120 os_memset(&data, 0, sizeof(data)); 2121 os_memcpy(data.client_poll.addr, 2122 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2123 2124 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2125} 2126 2127 2128static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv, 2129 struct nlattr **tb) 2130{ 2131 union wpa_event_data data; 2132 2133 wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event"); 2134 2135 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION]) 2136 return; 2137 2138 os_memset(&data, 0, sizeof(data)); 2139 os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2140 switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) { 2141 case NL80211_TDLS_SETUP: 2142 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer " 2143 MACSTR, MAC2STR(data.tdls.peer)); 2144 data.tdls.oper = TDLS_REQUEST_SETUP; 2145 break; 2146 case NL80211_TDLS_TEARDOWN: 2147 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer " 2148 MACSTR, MAC2STR(data.tdls.peer)); 2149 data.tdls.oper = TDLS_REQUEST_TEARDOWN; 2150 break; 2151 default: 2152 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione " 2153 "event"); 2154 return; 2155 } 2156 if (tb[NL80211_ATTR_REASON_CODE]) { 2157 data.tdls.reason_code = 2158 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]); 2159 } 2160 2161 wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data); 2162} 2163 2164 2165static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv, 2166 struct nlattr **tb) 2167{ 2168 union wpa_event_data data; 2169 u32 reason; 2170 2171 wpa_printf(MSG_DEBUG, "nl80211: Connect failed event"); 2172 2173 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON]) 2174 return; 2175 2176 os_memset(&data, 0, sizeof(data)); 2177 os_memcpy(data.connect_failed_reason.addr, 2178 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2179 2180 reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]); 2181 switch (reason) { 2182 case NL80211_CONN_FAIL_MAX_CLIENTS: 2183 wpa_printf(MSG_DEBUG, "nl80211: Max client reached"); 2184 data.connect_failed_reason.code = MAX_CLIENT_REACHED; 2185 break; 2186 case NL80211_CONN_FAIL_BLOCKED_CLIENT: 2187 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR 2188 " tried to connect", 2189 MAC2STR(data.connect_failed_reason.addr)); 2190 data.connect_failed_reason.code = BLOCKED_CLIENT; 2191 break; 2192 default: 2193 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason " 2194 "%u", reason); 2195 return; 2196 } 2197 2198 wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data); 2199} 2200 2201 2202static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2203 int wds) 2204{ 2205 struct wpa_driver_nl80211_data *drv = bss->drv; 2206 union wpa_event_data event; 2207 2208 if (!tb[NL80211_ATTR_MAC]) 2209 return; 2210 2211 os_memset(&event, 0, sizeof(event)); 2212 event.rx_from_unknown.bssid = bss->addr; 2213 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2214 event.rx_from_unknown.wds = wds; 2215 2216 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2217} 2218 2219 2220static void do_process_drv_event(struct i802_bss *bss, int cmd, 2221 struct nlattr **tb) 2222{ 2223 struct wpa_driver_nl80211_data *drv = bss->drv; 2224 2225 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2226 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2227 cmd == NL80211_CMD_SCAN_ABORTED)) { 2228 wpa_driver_nl80211_set_mode(&drv->first_bss, 2229 drv->ap_scan_as_station); 2230 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2231 } 2232 2233 switch (cmd) { 2234 case NL80211_CMD_TRIGGER_SCAN: 2235 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger"); 2236 break; 2237 case NL80211_CMD_START_SCHED_SCAN: 2238 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started"); 2239 break; 2240 case NL80211_CMD_SCHED_SCAN_STOPPED: 2241 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped"); 2242 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2243 break; 2244 case NL80211_CMD_NEW_SCAN_RESULTS: 2245 wpa_printf(MSG_DEBUG, "nl80211: New scan results available"); 2246 drv->scan_complete_events = 1; 2247 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2248 drv->ctx); 2249 send_scan_event(drv, 0, tb); 2250 break; 2251 case NL80211_CMD_SCHED_SCAN_RESULTS: 2252 wpa_printf(MSG_DEBUG, 2253 "nl80211: New sched scan results available"); 2254 send_scan_event(drv, 0, tb); 2255 break; 2256 case NL80211_CMD_SCAN_ABORTED: 2257 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted"); 2258 /* 2259 * Need to indicate that scan results are available in order 2260 * not to make wpa_supplicant stop its scanning. 2261 */ 2262 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2263 drv->ctx); 2264 send_scan_event(drv, 1, tb); 2265 break; 2266 case NL80211_CMD_AUTHENTICATE: 2267 case NL80211_CMD_ASSOCIATE: 2268 case NL80211_CMD_DEAUTHENTICATE: 2269 case NL80211_CMD_DISASSOCIATE: 2270 case NL80211_CMD_FRAME_TX_STATUS: 2271 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2272 case NL80211_CMD_UNPROT_DISASSOCIATE: 2273 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME], 2274 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2275 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2276 tb[NL80211_ATTR_COOKIE], 2277 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2278 break; 2279 case NL80211_CMD_CONNECT: 2280 case NL80211_CMD_ROAM: 2281 mlme_event_connect(drv, cmd, 2282 tb[NL80211_ATTR_STATUS_CODE], 2283 tb[NL80211_ATTR_MAC], 2284 tb[NL80211_ATTR_REQ_IE], 2285 tb[NL80211_ATTR_RESP_IE]); 2286 break; 2287 case NL80211_CMD_CH_SWITCH_NOTIFY: 2288 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], 2289 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2290 break; 2291 case NL80211_CMD_DISCONNECT: 2292 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2293 tb[NL80211_ATTR_MAC], 2294 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2295 break; 2296 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2297 mlme_event_michael_mic_failure(bss, tb); 2298 break; 2299 case NL80211_CMD_JOIN_IBSS: 2300 mlme_event_join_ibss(drv, tb); 2301 break; 2302 case NL80211_CMD_REMAIN_ON_CHANNEL: 2303 mlme_event_remain_on_channel(drv, 0, tb); 2304 break; 2305 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2306 mlme_event_remain_on_channel(drv, 1, tb); 2307 break; 2308 case NL80211_CMD_NOTIFY_CQM: 2309 nl80211_cqm_event(drv, tb); 2310 break; 2311 case NL80211_CMD_REG_CHANGE: 2312 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2313 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2314 NULL); 2315 break; 2316 case NL80211_CMD_REG_BEACON_HINT: 2317 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2318 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2319 NULL); 2320 break; 2321 case NL80211_CMD_NEW_STATION: 2322 nl80211_new_station_event(drv, tb); 2323 break; 2324 case NL80211_CMD_DEL_STATION: 2325 nl80211_del_station_event(drv, tb); 2326 break; 2327 case NL80211_CMD_SET_REKEY_OFFLOAD: 2328 nl80211_rekey_offload_event(drv, tb); 2329 break; 2330 case NL80211_CMD_PMKSA_CANDIDATE: 2331 nl80211_pmksa_candidate_event(drv, tb); 2332 break; 2333 case NL80211_CMD_PROBE_CLIENT: 2334 nl80211_client_probe_event(drv, tb); 2335 break; 2336 case NL80211_CMD_TDLS_OPER: 2337 nl80211_tdls_oper_event(drv, tb); 2338 break; 2339 case NL80211_CMD_CONN_FAILED: 2340 nl80211_connect_failed_event(drv, tb); 2341 break; 2342 default: 2343 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2344 "(cmd=%d)", cmd); 2345 break; 2346 } 2347} 2348 2349 2350static int process_drv_event(struct nl_msg *msg, void *arg) 2351{ 2352 struct wpa_driver_nl80211_data *drv = arg; 2353 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2354 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2355 struct i802_bss *bss; 2356 int ifidx = -1; 2357 2358 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2359 genlmsg_attrlen(gnlh, 0), NULL); 2360 2361 if (tb[NL80211_ATTR_IFINDEX]) 2362 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2363 2364 for (bss = &drv->first_bss; bss; bss = bss->next) { 2365 if (ifidx == -1 || ifidx == bss->ifindex) { 2366 do_process_drv_event(bss, gnlh->cmd, tb); 2367 return NL_SKIP; 2368 } 2369 } 2370 2371 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d) for foreign " 2372 "interface (ifindex %d)", gnlh->cmd, ifidx); 2373 2374 return NL_SKIP; 2375} 2376 2377 2378static int process_global_event(struct nl_msg *msg, void *arg) 2379{ 2380 struct nl80211_global *global = arg; 2381 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2382 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2383 struct wpa_driver_nl80211_data *drv, *tmp; 2384 int ifidx = -1; 2385 struct i802_bss *bss; 2386 2387 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2388 genlmsg_attrlen(gnlh, 0), NULL); 2389 2390 if (tb[NL80211_ATTR_IFINDEX]) 2391 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2392 2393 dl_list_for_each_safe(drv, tmp, &global->interfaces, 2394 struct wpa_driver_nl80211_data, list) { 2395 for (bss = &drv->first_bss; bss; bss = bss->next) { 2396 if (ifidx == -1 || ifidx == bss->ifindex) { 2397 do_process_drv_event(bss, gnlh->cmd, tb); 2398 return NL_SKIP; 2399 } 2400 } 2401 } 2402 2403 return NL_SKIP; 2404} 2405 2406 2407static int process_bss_event(struct nl_msg *msg, void *arg) 2408{ 2409 struct i802_bss *bss = arg; 2410 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2411 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2412 2413 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2414 genlmsg_attrlen(gnlh, 0), NULL); 2415 2416 switch (gnlh->cmd) { 2417 case NL80211_CMD_FRAME: 2418 case NL80211_CMD_FRAME_TX_STATUS: 2419 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2420 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2421 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2422 tb[NL80211_ATTR_COOKIE], 2423 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2424 break; 2425 case NL80211_CMD_UNEXPECTED_FRAME: 2426 nl80211_spurious_frame(bss, tb, 0); 2427 break; 2428 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2429 nl80211_spurious_frame(bss, tb, 1); 2430 break; 2431 default: 2432 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2433 "(cmd=%d)", gnlh->cmd); 2434 break; 2435 } 2436 2437 return NL_SKIP; 2438} 2439 2440 2441static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2442 void *handle) 2443{ 2444 struct nl_cb *cb = eloop_ctx; 2445 2446 wpa_printf(MSG_DEBUG, "nl80211: Event message available"); 2447 2448 nl_recvmsgs(handle, cb); 2449} 2450 2451 2452/** 2453 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2454 * @priv: driver_nl80211 private data 2455 * @alpha2_arg: country to which to switch to 2456 * Returns: 0 on success, -1 on failure 2457 * 2458 * This asks nl80211 to set the regulatory domain for given 2459 * country ISO / IEC alpha2. 2460 */ 2461static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2462{ 2463 struct i802_bss *bss = priv; 2464 struct wpa_driver_nl80211_data *drv = bss->drv; 2465 char alpha2[3]; 2466 struct nl_msg *msg; 2467 2468 msg = nlmsg_alloc(); 2469 if (!msg) 2470 return -ENOMEM; 2471 2472 alpha2[0] = alpha2_arg[0]; 2473 alpha2[1] = alpha2_arg[1]; 2474 alpha2[2] = '\0'; 2475 2476 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2477 2478 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2479 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2480 return -EINVAL; 2481 return 0; 2482nla_put_failure: 2483 nlmsg_free(msg); 2484 return -EINVAL; 2485} 2486 2487 2488struct wiphy_info_data { 2489 struct wpa_driver_capa *capa; 2490 2491 unsigned int error:1; 2492 unsigned int device_ap_sme:1; 2493 unsigned int poll_command_supported:1; 2494 unsigned int data_tx_status:1; 2495 unsigned int monitor_supported:1; 2496}; 2497 2498 2499static unsigned int probe_resp_offload_support(int supp_protocols) 2500{ 2501 unsigned int prot = 0; 2502 2503 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 2504 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 2505 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 2506 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 2507 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 2508 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 2509 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 2510 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 2511 2512 return prot; 2513} 2514 2515 2516static int wiphy_info_handler(struct nl_msg *msg, void *arg) 2517{ 2518 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2519 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2520 struct wiphy_info_data *info = arg; 2521 int p2p_go_supported = 0, p2p_client_supported = 0; 2522 int p2p_concurrent = 0, p2p_multichan_concurrent = 0; 2523 int auth_supported = 0, connect_supported = 0; 2524 struct wpa_driver_capa *capa = info->capa; 2525 static struct nla_policy 2526 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 2527 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 2528 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 2529 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 2530 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 2531 }, 2532 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 2533 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 2534 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 2535 }; 2536 2537 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2538 genlmsg_attrlen(gnlh, 0), NULL); 2539 2540 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 2541 capa->max_scan_ssids = 2542 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 2543 2544 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 2545 capa->max_sched_scan_ssids = 2546 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 2547 2548 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 2549 capa->max_match_sets = 2550 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 2551 2552 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) { 2553 struct nlattr *nl_mode; 2554 int i; 2555 nla_for_each_nested(nl_mode, 2556 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) { 2557 switch (nla_type(nl_mode)) { 2558 case NL80211_IFTYPE_AP: 2559 capa->flags |= WPA_DRIVER_FLAGS_AP; 2560 break; 2561 case NL80211_IFTYPE_P2P_GO: 2562 p2p_go_supported = 1; 2563 break; 2564 case NL80211_IFTYPE_P2P_CLIENT: 2565 p2p_client_supported = 1; 2566 break; 2567 case NL80211_IFTYPE_MONITOR: 2568 info->monitor_supported = 1; 2569 break; 2570 } 2571 } 2572 } 2573 2574 if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) { 2575 struct nlattr *nl_combi; 2576 int rem_combi; 2577 2578 nla_for_each_nested(nl_combi, 2579 tb[NL80211_ATTR_INTERFACE_COMBINATIONS], 2580 rem_combi) { 2581 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 2582 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 2583 struct nlattr *nl_limit, *nl_mode; 2584 int err, rem_limit, rem_mode; 2585 int combination_has_p2p = 0, combination_has_mgd = 0; 2586 2587 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 2588 nl_combi, 2589 iface_combination_policy); 2590 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 2591 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 2592 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 2593 goto broken_combination; 2594 2595 nla_for_each_nested(nl_limit, 2596 tb_comb[NL80211_IFACE_COMB_LIMITS], 2597 rem_limit) { 2598 err = nla_parse_nested(tb_limit, 2599 MAX_NL80211_IFACE_LIMIT, 2600 nl_limit, 2601 iface_limit_policy); 2602 if (err || 2603 !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 2604 goto broken_combination; 2605 2606 nla_for_each_nested( 2607 nl_mode, 2608 tb_limit[NL80211_IFACE_LIMIT_TYPES], 2609 rem_mode) { 2610 int ift = nla_type(nl_mode); 2611 if (ift == NL80211_IFTYPE_P2P_GO || 2612 ift == NL80211_IFTYPE_P2P_CLIENT) 2613 combination_has_p2p = 1; 2614 if (ift == NL80211_IFTYPE_STATION) 2615 combination_has_mgd = 1; 2616 } 2617 if (combination_has_p2p && combination_has_mgd) 2618 break; 2619 } 2620 2621 if (combination_has_p2p && combination_has_mgd) { 2622 p2p_concurrent = 1; 2623 if (nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) > 1) 2624 p2p_multichan_concurrent = 1; 2625 break; 2626 } 2627 2628broken_combination: 2629 ; 2630 } 2631 } 2632 2633 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) { 2634 struct nlattr *nl_cmd; 2635 int i; 2636 2637 nla_for_each_nested(nl_cmd, 2638 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) { 2639 switch (nla_get_u32(nl_cmd)) { 2640 case NL80211_CMD_AUTHENTICATE: 2641 auth_supported = 1; 2642 break; 2643 case NL80211_CMD_CONNECT: 2644 connect_supported = 1; 2645 break; 2646 case NL80211_CMD_START_SCHED_SCAN: 2647 capa->sched_scan_supported = 1; 2648 break; 2649 case NL80211_CMD_PROBE_CLIENT: 2650 info->poll_command_supported = 1; 2651 break; 2652 } 2653 } 2654 } 2655 2656 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 2657 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 2658 "off-channel TX"); 2659 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 2660 } 2661 2662 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 2663 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 2664 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 2665 } 2666 2667 /* default to 5000 since early versions of mac80211 don't set it */ 2668 capa->max_remain_on_chan = 5000; 2669 2670 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 2671 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 2672 2673 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]) 2674 capa->max_remain_on_chan = 2675 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 2676 2677 if (auth_supported) 2678 capa->flags |= WPA_DRIVER_FLAGS_SME; 2679 else if (!connect_supported) { 2680 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 2681 "authentication/association or connect commands"); 2682 info->error = 1; 2683 } 2684 2685 if (p2p_go_supported && p2p_client_supported) 2686 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 2687 if (p2p_concurrent) { 2688 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 2689 "interface (driver advertised support)"); 2690 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 2691 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 2692 2693 if (p2p_multichan_concurrent) { 2694 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 2695 "concurrent (driver advertised support)"); 2696 capa->flags |= 2697 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 2698 } 2699 } 2700 2701 if (tb[NL80211_ATTR_TDLS_SUPPORT]) { 2702 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 2703 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 2704 2705 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) { 2706 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 2707 capa->flags |= 2708 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 2709 } 2710 } 2711 2712 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2713 info->device_ap_sme = 1; 2714 2715 if (tb[NL80211_ATTR_FEATURE_FLAGS]) { 2716 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]); 2717 2718 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2719 info->data_tx_status = 1; 2720 2721 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 2722 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 2723 2724 if (flags & NL80211_FEATURE_SAE) 2725 capa->flags |= WPA_DRIVER_FLAGS_SAE; 2726 2727 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 2728 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 2729 } 2730 2731 if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) { 2732 int protocols = 2733 nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2734 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response " 2735 "offload in AP mode"); 2736 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2737 capa->probe_resp_offloads = 2738 probe_resp_offload_support(protocols); 2739 } 2740 2741 return NL_SKIP; 2742} 2743 2744 2745static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2746 struct wiphy_info_data *info) 2747{ 2748 struct nl_msg *msg; 2749 2750 os_memset(info, 0, sizeof(*info)); 2751 info->capa = &drv->capa; 2752 2753 msg = nlmsg_alloc(); 2754 if (!msg) 2755 return -1; 2756 2757 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2758 2759 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2760 2761 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0) 2762 return 0; 2763 msg = NULL; 2764nla_put_failure: 2765 nlmsg_free(msg); 2766 return -1; 2767} 2768 2769 2770static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2771{ 2772 struct wiphy_info_data info; 2773 if (wpa_driver_nl80211_get_info(drv, &info)) 2774 return -1; 2775 2776 if (info.error) 2777 return -1; 2778 2779 drv->has_capability = 1; 2780 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2781 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2782 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2783 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2784 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2785 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2786 WPA_DRIVER_CAPA_ENC_WEP104 | 2787 WPA_DRIVER_CAPA_ENC_TKIP | 2788 WPA_DRIVER_CAPA_ENC_CCMP; 2789 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2790 WPA_DRIVER_AUTH_SHARED | 2791 WPA_DRIVER_AUTH_LEAP; 2792 2793 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2794 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2795 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2796 2797 if (!info.device_ap_sme) { 2798 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2799 2800 /* 2801 * No AP SME is currently assumed to also indicate no AP MLME 2802 * in the driver/firmware. 2803 */ 2804 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 2805 } 2806 2807 drv->device_ap_sme = info.device_ap_sme; 2808 drv->poll_command_supported = info.poll_command_supported; 2809 drv->data_tx_status = info.data_tx_status; 2810 2811#ifdef ANDROID_P2P 2812 if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { 2813 /* Driver is new enough to support monitorless mode*/ 2814 wpa_printf(MSG_DEBUG, "nl80211: Driver is new " 2815 "enough to support monitor-less mode"); 2816 drv->use_monitor = 0; 2817 } 2818#else 2819 /* 2820 * If poll command and tx status are supported, mac80211 is new enough 2821 * to have everything we need to not need monitor interfaces. 2822 */ 2823 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 2824#endif 2825 2826 if (drv->device_ap_sme && drv->use_monitor) { 2827 /* 2828 * Non-mac80211 drivers may not support monitor interface. 2829 * Make sure we do not get stuck with incorrect capability here 2830 * by explicitly testing this. 2831 */ 2832 if (!info.monitor_supported) { 2833 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 2834 "with device_ap_sme since no monitor mode " 2835 "support detected"); 2836 drv->use_monitor = 0; 2837 } 2838 } 2839 2840 /* 2841 * If we aren't going to use monitor interfaces, but the 2842 * driver doesn't support data TX status, we won't get TX 2843 * status for EAPOL frames. 2844 */ 2845 if (!drv->use_monitor && !info.data_tx_status) 2846 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2847 2848 return 0; 2849} 2850 2851 2852#ifdef ANDROID 2853static int android_genl_ctrl_resolve(struct nl_handle *handle, 2854 const char *name) 2855{ 2856 /* 2857 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 2858 * need to work around that. 2859 */ 2860 struct nl_cache *cache = NULL; 2861 struct genl_family *nl80211 = NULL; 2862 int id = -1; 2863 2864 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 2865 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 2866 "netlink cache"); 2867 goto fail; 2868 } 2869 2870 nl80211 = genl_ctrl_search_by_name(cache, name); 2871 if (nl80211 == NULL) 2872 goto fail; 2873 2874 id = genl_family_get_id(nl80211); 2875 2876fail: 2877 if (nl80211) 2878 genl_family_put(nl80211); 2879 if (cache) 2880 nl_cache_free(cache); 2881 2882 return id; 2883} 2884#define genl_ctrl_resolve android_genl_ctrl_resolve 2885#endif /* ANDROID */ 2886 2887 2888static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 2889{ 2890 int ret; 2891 2892 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2893 if (global->nl_cb == NULL) { 2894 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 2895 "callbacks"); 2896 return -1; 2897 } 2898 2899 global->nl = nl_create_handle(global->nl_cb, "nl"); 2900 if (global->nl == NULL) 2901 goto err; 2902 2903 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 2904 if (global->nl80211_id < 0) { 2905 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 2906 "found"); 2907 goto err; 2908 } 2909 2910 global->nl_event = nl_create_handle(global->nl_cb, "event"); 2911 if (global->nl_event == NULL) 2912 goto err; 2913 2914 ret = nl_get_multicast_id(global, "nl80211", "scan"); 2915 if (ret >= 0) 2916 ret = nl_socket_add_membership(global->nl_event, ret); 2917 if (ret < 0) { 2918 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2919 "membership for scan events: %d (%s)", 2920 ret, strerror(-ret)); 2921 goto err; 2922 } 2923 2924 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 2925 if (ret >= 0) 2926 ret = nl_socket_add_membership(global->nl_event, ret); 2927 if (ret < 0) { 2928 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2929 "membership for mlme events: %d (%s)", 2930 ret, strerror(-ret)); 2931 goto err; 2932 } 2933 2934 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 2935 if (ret >= 0) 2936 ret = nl_socket_add_membership(global->nl_event, ret); 2937 if (ret < 0) { 2938 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 2939 "membership for regulatory events: %d (%s)", 2940 ret, strerror(-ret)); 2941 /* Continue without regulatory events */ 2942 } 2943 2944 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2945 no_seq_check, NULL); 2946 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2947 process_global_event, global); 2948 2949 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 2950 wpa_driver_nl80211_event_receive, 2951 global->nl_cb, global->nl_event); 2952 2953 return 0; 2954 2955err: 2956 nl_destroy_handles(&global->nl_event); 2957 nl_destroy_handles(&global->nl); 2958 nl_cb_put(global->nl_cb); 2959 global->nl_cb = NULL; 2960 return -1; 2961} 2962 2963 2964static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 2965{ 2966 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2967 if (!drv->nl_cb) { 2968 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 2969 return -1; 2970 } 2971 2972 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2973 no_seq_check, NULL); 2974 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2975 process_drv_event, drv); 2976 2977 return 0; 2978} 2979 2980 2981static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 2982{ 2983 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 2984 /* 2985 * This may be for any interface; use ifdown event to disable 2986 * interface. 2987 */ 2988} 2989 2990 2991static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 2992{ 2993 struct wpa_driver_nl80211_data *drv = ctx; 2994 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 2995 if (linux_set_iface_flags(drv->global->ioctl_sock, 2996 drv->first_bss.ifname, 1)) { 2997 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 2998 "after rfkill unblock"); 2999 return; 3000 } 3001 /* rtnetlink ifup handler will report interface as enabled */ 3002} 3003 3004 3005static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 3006{ 3007 /* Find phy (radio) to which this interface belongs */ 3008 char buf[90], *pos; 3009 int f, rv; 3010 3011 drv->phyname[0] = '\0'; 3012 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 3013 drv->first_bss.ifname); 3014 f = open(buf, O_RDONLY); 3015 if (f < 0) { 3016 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 3017 buf, strerror(errno)); 3018 return; 3019 } 3020 3021 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 3022 close(f); 3023 if (rv < 0) { 3024 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 3025 buf, strerror(errno)); 3026 return; 3027 } 3028 3029 drv->phyname[rv] = '\0'; 3030 pos = os_strchr(drv->phyname, '\n'); 3031 if (pos) 3032 *pos = '\0'; 3033 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 3034 drv->first_bss.ifname, drv->phyname); 3035} 3036 3037 3038static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 3039 void *eloop_ctx, 3040 void *handle) 3041{ 3042 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3043 u8 data[2048]; 3044 struct msghdr msg; 3045 struct iovec entry; 3046 u8 control[512]; 3047 struct cmsghdr *cmsg; 3048 int res, found_ee = 0, found_wifi = 0, acked = 0; 3049 union wpa_event_data event; 3050 3051 memset(&msg, 0, sizeof(msg)); 3052 msg.msg_iov = &entry; 3053 msg.msg_iovlen = 1; 3054 entry.iov_base = data; 3055 entry.iov_len = sizeof(data); 3056 msg.msg_control = &control; 3057 msg.msg_controllen = sizeof(control); 3058 3059 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 3060 /* if error or not fitting 802.3 header, return */ 3061 if (res < 14) 3062 return; 3063 3064 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 3065 { 3066 if (cmsg->cmsg_level == SOL_SOCKET && 3067 cmsg->cmsg_type == SCM_WIFI_STATUS) { 3068 int *ack; 3069 3070 found_wifi = 1; 3071 ack = (void *)CMSG_DATA(cmsg); 3072 acked = *ack; 3073 } 3074 3075 if (cmsg->cmsg_level == SOL_PACKET && 3076 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 3077 struct sock_extended_err *err = 3078 (struct sock_extended_err *)CMSG_DATA(cmsg); 3079 3080 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 3081 found_ee = 1; 3082 } 3083 } 3084 3085 if (!found_ee || !found_wifi) 3086 return; 3087 3088 memset(&event, 0, sizeof(event)); 3089 event.eapol_tx_status.dst = data; 3090 event.eapol_tx_status.data = data + 14; 3091 event.eapol_tx_status.data_len = res - 14; 3092 event.eapol_tx_status.ack = acked; 3093 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 3094} 3095 3096 3097static int nl80211_init_bss(struct i802_bss *bss) 3098{ 3099 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3100 if (!bss->nl_cb) 3101 return -1; 3102 3103 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3104 no_seq_check, NULL); 3105 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3106 process_bss_event, bss); 3107 3108 return 0; 3109} 3110 3111 3112static void nl80211_destroy_bss(struct i802_bss *bss) 3113{ 3114 nl_cb_put(bss->nl_cb); 3115 bss->nl_cb = NULL; 3116} 3117 3118 3119/** 3120 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 3121 * @ctx: context to be used when calling wpa_supplicant functions, 3122 * e.g., wpa_supplicant_event() 3123 * @ifname: interface name, e.g., wlan0 3124 * @global_priv: private driver global data from global_init() 3125 * Returns: Pointer to private data, %NULL on failure 3126 */ 3127static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 3128 void *global_priv) 3129{ 3130 struct wpa_driver_nl80211_data *drv; 3131 struct rfkill_config *rcfg; 3132 struct i802_bss *bss; 3133 3134 if (global_priv == NULL) 3135 return NULL; 3136 drv = os_zalloc(sizeof(*drv)); 3137 if (drv == NULL) 3138 return NULL; 3139 drv->global = global_priv; 3140 drv->ctx = ctx; 3141 bss = &drv->first_bss; 3142 bss->drv = drv; 3143 bss->ctx = ctx; 3144 3145 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 3146 drv->monitor_ifidx = -1; 3147 drv->monitor_sock = -1; 3148 drv->eapol_tx_sock = -1; 3149 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3150 3151 if (wpa_driver_nl80211_init_nl(drv)) { 3152 os_free(drv); 3153 return NULL; 3154 } 3155 3156 if (nl80211_init_bss(bss)) 3157 goto failed; 3158 3159 nl80211_get_phy_name(drv); 3160 3161 rcfg = os_zalloc(sizeof(*rcfg)); 3162 if (rcfg == NULL) 3163 goto failed; 3164 rcfg->ctx = drv; 3165 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3166 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3167 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3168 drv->rfkill = rfkill_init(rcfg); 3169 if (drv->rfkill == NULL) { 3170 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3171 os_free(rcfg); 3172 } 3173 3174 if (wpa_driver_nl80211_finish_drv_init(drv)) 3175 goto failed; 3176 3177 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3178 if (drv->eapol_tx_sock < 0) 3179 goto failed; 3180 3181 if (drv->data_tx_status) { 3182 int enabled = 1; 3183 3184 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3185 &enabled, sizeof(enabled)) < 0) { 3186 wpa_printf(MSG_DEBUG, 3187 "nl80211: wifi status sockopt failed\n"); 3188 drv->data_tx_status = 0; 3189 if (!drv->use_monitor) 3190 drv->capa.flags &= 3191 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3192 } else { 3193 eloop_register_read_sock(drv->eapol_tx_sock, 3194 wpa_driver_nl80211_handle_eapol_tx_status, 3195 drv, NULL); 3196 } 3197 } 3198 3199 if (drv->global) { 3200 dl_list_add(&drv->global->interfaces, &drv->list); 3201 drv->in_interface_list = 1; 3202 } 3203 3204 return bss; 3205 3206failed: 3207 wpa_driver_nl80211_deinit(bss); 3208 return NULL; 3209} 3210 3211 3212static int nl80211_register_frame(struct i802_bss *bss, 3213 struct nl_handle *nl_handle, 3214 u16 type, const u8 *match, size_t match_len) 3215{ 3216 struct wpa_driver_nl80211_data *drv = bss->drv; 3217 struct nl_msg *msg; 3218 int ret = -1; 3219 3220 msg = nlmsg_alloc(); 3221 if (!msg) 3222 return -1; 3223 3224 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3225 type, nl_handle); 3226 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3227 match, match_len); 3228 3229 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3230 3231 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3232 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3233 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3234 3235 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3236 msg = NULL; 3237 if (ret) { 3238 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3239 "failed (type=%u): ret=%d (%s)", 3240 type, ret, strerror(-ret)); 3241 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3242 match, match_len); 3243 goto nla_put_failure; 3244 } 3245 ret = 0; 3246nla_put_failure: 3247 nlmsg_free(msg); 3248 return ret; 3249} 3250 3251 3252static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3253{ 3254 struct wpa_driver_nl80211_data *drv = bss->drv; 3255 3256 if (bss->nl_mgmt) { 3257 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3258 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3259 return -1; 3260 } 3261 3262 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3263 if (bss->nl_mgmt == NULL) 3264 return -1; 3265 3266 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3267 wpa_driver_nl80211_event_receive, bss->nl_cb, 3268 bss->nl_mgmt); 3269 3270 return 0; 3271} 3272 3273 3274static int nl80211_register_action_frame(struct i802_bss *bss, 3275 const u8 *match, size_t match_len) 3276{ 3277 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3278 return nl80211_register_frame(bss, bss->nl_mgmt, 3279 type, match, match_len); 3280} 3281 3282 3283static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3284{ 3285 struct wpa_driver_nl80211_data *drv = bss->drv; 3286 3287 if (nl80211_alloc_mgmt_handle(bss)) 3288 return -1; 3289 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3290 "handle %p", bss->nl_mgmt); 3291 3292#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3293 /* GAS Initial Request */ 3294 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3295 return -1; 3296 /* GAS Initial Response */ 3297 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3298 return -1; 3299 /* GAS Comeback Request */ 3300 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3301 return -1; 3302 /* GAS Comeback Response */ 3303 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3304 return -1; 3305#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3306#ifdef CONFIG_P2P 3307 /* P2P Public Action */ 3308 if (nl80211_register_action_frame(bss, 3309 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3310 6) < 0) 3311 return -1; 3312 /* P2P Action */ 3313 if (nl80211_register_action_frame(bss, 3314 (u8 *) "\x7f\x50\x6f\x9a\x09", 3315 5) < 0) 3316 return -1; 3317#endif /* CONFIG_P2P */ 3318#ifdef CONFIG_IEEE80211W 3319 /* SA Query Response */ 3320 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3321 return -1; 3322#endif /* CONFIG_IEEE80211W */ 3323#ifdef CONFIG_TDLS 3324 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3325 /* TDLS Discovery Response */ 3326 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3327 0) 3328 return -1; 3329 } 3330#endif /* CONFIG_TDLS */ 3331 3332 /* FT Action frames */ 3333 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3334 return -1; 3335 else 3336 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3337 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3338 3339 /* WNM - BSS Transition Management Request */ 3340 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3341 return -1; 3342 /* WNM-Sleep Mode Response */ 3343 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0) 3344 return -1; 3345 3346 return 0; 3347} 3348 3349 3350static int nl80211_register_spurious_class3(struct i802_bss *bss) 3351{ 3352 struct wpa_driver_nl80211_data *drv = bss->drv; 3353 struct nl_msg *msg; 3354 int ret = -1; 3355 3356 msg = nlmsg_alloc(); 3357 if (!msg) 3358 return -1; 3359 3360 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3361 3362 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3363 3364 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3365 msg = NULL; 3366 if (ret) { 3367 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3368 "failed: ret=%d (%s)", 3369 ret, strerror(-ret)); 3370 goto nla_put_failure; 3371 } 3372 ret = 0; 3373nla_put_failure: 3374 nlmsg_free(msg); 3375 return ret; 3376} 3377 3378 3379static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3380{ 3381 static const int stypes[] = { 3382 WLAN_FC_STYPE_AUTH, 3383 WLAN_FC_STYPE_ASSOC_REQ, 3384 WLAN_FC_STYPE_REASSOC_REQ, 3385 WLAN_FC_STYPE_DISASSOC, 3386 WLAN_FC_STYPE_DEAUTH, 3387 WLAN_FC_STYPE_ACTION, 3388 WLAN_FC_STYPE_PROBE_REQ, 3389/* Beacon doesn't work as mac80211 doesn't currently allow 3390 * it, but it wouldn't really be the right thing anyway as 3391 * it isn't per interface ... maybe just dump the scan 3392 * results periodically for OLBC? 3393 */ 3394// WLAN_FC_STYPE_BEACON, 3395 }; 3396 unsigned int i; 3397 3398 if (nl80211_alloc_mgmt_handle(bss)) 3399 return -1; 3400 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3401 "handle %p", bss->nl_mgmt); 3402 3403 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3404 if (nl80211_register_frame(bss, bss->nl_mgmt, 3405 (WLAN_FC_TYPE_MGMT << 2) | 3406 (stypes[i] << 4), 3407 NULL, 0) < 0) { 3408 goto out_err; 3409 } 3410 } 3411 3412 if (nl80211_register_spurious_class3(bss)) 3413 goto out_err; 3414 3415 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3416 goto out_err; 3417 3418 return 0; 3419 3420out_err: 3421 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3422 nl_destroy_handles(&bss->nl_mgmt); 3423 return -1; 3424} 3425 3426 3427static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3428{ 3429 if (nl80211_alloc_mgmt_handle(bss)) 3430 return -1; 3431 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3432 "handle %p (device SME)", bss->nl_mgmt); 3433 3434 if (nl80211_register_frame(bss, bss->nl_mgmt, 3435 (WLAN_FC_TYPE_MGMT << 2) | 3436 (WLAN_FC_STYPE_ACTION << 4), 3437 NULL, 0) < 0) 3438 goto out_err; 3439 3440 return 0; 3441 3442out_err: 3443 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3444 nl_destroy_handles(&bss->nl_mgmt); 3445 return -1; 3446} 3447 3448 3449static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3450{ 3451 if (bss->nl_mgmt == NULL) 3452 return; 3453 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3454 "(%s)", bss->nl_mgmt, reason); 3455 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3456 nl_destroy_handles(&bss->nl_mgmt); 3457 3458 nl80211_put_wiphy_data_ap(bss); 3459} 3460 3461 3462static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3463{ 3464 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3465} 3466 3467 3468static int 3469wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3470{ 3471 struct i802_bss *bss = &drv->first_bss; 3472 int send_rfkill_event = 0; 3473 3474 drv->ifindex = if_nametoindex(bss->ifname); 3475 drv->first_bss.ifindex = drv->ifindex; 3476 3477#ifndef HOSTAPD 3478 /* 3479 * Make sure the interface starts up in station mode unless this is a 3480 * dynamically added interface (e.g., P2P) that was already configured 3481 * with proper iftype. 3482 */ 3483 if (drv->ifindex != drv->global->if_add_ifindex && 3484 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3485 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3486 "use managed mode"); 3487 return -1; 3488 } 3489 3490 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3491 if (rfkill_is_blocked(drv->rfkill)) { 3492 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3493 "interface '%s' due to rfkill", 3494 bss->ifname); 3495 drv->if_disabled = 1; 3496 send_rfkill_event = 1; 3497 } else { 3498 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3499 "interface '%s' UP", bss->ifname); 3500 return -1; 3501 } 3502 } 3503 3504 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3505 1, IF_OPER_DORMANT); 3506#endif /* HOSTAPD */ 3507 3508 if (wpa_driver_nl80211_capa(drv)) 3509 return -1; 3510 3511 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3512 bss->addr)) 3513 return -1; 3514 3515 if (send_rfkill_event) { 3516 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3517 drv, drv->ctx); 3518 } 3519 3520 return 0; 3521} 3522 3523 3524static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3525{ 3526 struct nl_msg *msg; 3527 3528 msg = nlmsg_alloc(); 3529 if (!msg) 3530 return -ENOMEM; 3531 3532 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3533 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3534 3535 return send_and_recv_msgs(drv, msg, NULL, NULL); 3536 nla_put_failure: 3537 nlmsg_free(msg); 3538 return -ENOBUFS; 3539} 3540 3541 3542/** 3543 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3544 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3545 * 3546 * Shut down driver interface and processing of driver events. Free 3547 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3548 */ 3549static void wpa_driver_nl80211_deinit(struct i802_bss *bss) 3550{ 3551 struct wpa_driver_nl80211_data *drv = bss->drv; 3552 3553 bss->in_deinit = 1; 3554 if (drv->data_tx_status) 3555 eloop_unregister_read_sock(drv->eapol_tx_sock); 3556 if (drv->eapol_tx_sock >= 0) 3557 close(drv->eapol_tx_sock); 3558 3559 if (bss->nl_preq) 3560 wpa_driver_nl80211_probe_req_report(bss, 0); 3561 if (bss->added_if_into_bridge) { 3562 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3563 bss->ifname) < 0) 3564 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3565 "interface %s from bridge %s: %s", 3566 bss->ifname, bss->brname, strerror(errno)); 3567 } 3568 if (bss->added_bridge) { 3569 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3570 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3571 "bridge %s: %s", 3572 bss->brname, strerror(errno)); 3573 } 3574 3575 nl80211_remove_monitor_interface(drv); 3576 3577 if (is_ap_interface(drv->nlmode)) 3578 wpa_driver_nl80211_del_beacon(drv); 3579 3580#ifdef HOSTAPD 3581 if (drv->last_freq_ht) { 3582 /* Clear HT flags from the driver */ 3583 struct hostapd_freq_params freq; 3584 os_memset(&freq, 0, sizeof(freq)); 3585 freq.freq = drv->last_freq; 3586 wpa_driver_nl80211_set_freq(bss, &freq); 3587 } 3588 3589 if (drv->eapol_sock >= 0) { 3590 eloop_unregister_read_sock(drv->eapol_sock); 3591 close(drv->eapol_sock); 3592 } 3593 3594 if (drv->if_indices != drv->default_if_indices) 3595 os_free(drv->if_indices); 3596#endif /* HOSTAPD */ 3597 3598 if (drv->disabled_11b_rates) 3599 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3600 3601 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3602 IF_OPER_UP); 3603 rfkill_deinit(drv->rfkill); 3604 3605 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3606 3607 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3608 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3609 nl80211_mgmt_unsubscribe(bss, "deinit"); 3610 3611 nl_cb_put(drv->nl_cb); 3612 3613 nl80211_destroy_bss(&drv->first_bss); 3614 3615 os_free(drv->filter_ssids); 3616 3617 os_free(drv->auth_ie); 3618 3619 if (drv->in_interface_list) 3620 dl_list_del(&drv->list); 3621 3622 os_free(drv); 3623} 3624 3625 3626/** 3627 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3628 * @eloop_ctx: Driver private data 3629 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3630 * 3631 * This function can be used as registered timeout when starting a scan to 3632 * generate a scan completed event if the driver does not report this. 3633 */ 3634static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3635{ 3636 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3637 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3638 wpa_driver_nl80211_set_mode(&drv->first_bss, 3639 drv->ap_scan_as_station); 3640 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3641 } 3642 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3643 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3644} 3645 3646 3647static struct nl_msg * 3648nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, 3649 struct wpa_driver_scan_params *params) 3650{ 3651 struct nl_msg *msg; 3652 int err; 3653 size_t i; 3654 3655 msg = nlmsg_alloc(); 3656 if (!msg) 3657 return NULL; 3658 3659 nl80211_cmd(drv, msg, 0, cmd); 3660 3661 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0) 3662 goto fail; 3663 3664 if (params->num_ssids) { 3665 struct nl_msg *ssids = nlmsg_alloc(); 3666 if (ssids == NULL) 3667 goto fail; 3668 for (i = 0; i < params->num_ssids; i++) { 3669 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3670 params->ssids[i].ssid, 3671 params->ssids[i].ssid_len); 3672 if (nla_put(ssids, i + 1, params->ssids[i].ssid_len, 3673 params->ssids[i].ssid) < 0) { 3674 nlmsg_free(ssids); 3675 goto fail; 3676 } 3677 } 3678 err = nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3679 nlmsg_free(ssids); 3680 if (err < 0) 3681 goto fail; 3682 } 3683 3684 if (params->extra_ies) { 3685 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3686 params->extra_ies, params->extra_ies_len); 3687 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, 3688 params->extra_ies) < 0) 3689 goto fail; 3690 } 3691 3692 if (params->freqs) { 3693 struct nl_msg *freqs = nlmsg_alloc(); 3694 if (freqs == NULL) 3695 goto fail; 3696 for (i = 0; params->freqs[i]; i++) { 3697 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3698 "MHz", params->freqs[i]); 3699 if (nla_put_u32(freqs, i + 1, params->freqs[i]) < 0) { 3700 nlmsg_free(freqs); 3701 goto fail; 3702 } 3703 } 3704 err = nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, 3705 freqs); 3706 nlmsg_free(freqs); 3707 if (err < 0) 3708 goto fail; 3709 } 3710 3711 os_free(drv->filter_ssids); 3712 drv->filter_ssids = params->filter_ssids; 3713 params->filter_ssids = NULL; 3714 drv->num_filter_ssids = params->num_filter_ssids; 3715 3716 return msg; 3717 3718fail: 3719 nlmsg_free(msg); 3720 return NULL; 3721} 3722 3723 3724/** 3725 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3726 * @bss: Pointer to private driver data from wpa_driver_nl80211_init() 3727 * @params: Scan parameters 3728 * Returns: 0 on success, -1 on failure 3729 */ 3730static int wpa_driver_nl80211_scan(struct i802_bss *bss, 3731 struct wpa_driver_scan_params *params) 3732{ 3733 struct wpa_driver_nl80211_data *drv = bss->drv; 3734 int ret = -1, timeout; 3735 struct nl_msg *msg, *rates = NULL; 3736 3737 drv->scan_for_auth = 0; 3738 3739 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params); 3740 if (!msg) 3741 return -1; 3742 3743 if (params->p2p_probe) { 3744 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 3745 3746 rates = nlmsg_alloc(); 3747 if (rates == NULL) 3748 goto nla_put_failure; 3749 3750 /* 3751 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3752 * by masking out everything else apart from the OFDM rates 6, 3753 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3754 * rates are left enabled. 3755 */ 3756 NLA_PUT(rates, NL80211_BAND_2GHZ, 8, 3757 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3758 if (nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates) < 3759 0) 3760 goto nla_put_failure; 3761 3762 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3763 } 3764 3765 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3766 msg = NULL; 3767 if (ret) { 3768 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3769 "(%s)", ret, strerror(-ret)); 3770#ifdef HOSTAPD 3771 if (is_ap_interface(drv->nlmode)) { 3772 /* 3773 * mac80211 does not allow scan requests in AP mode, so 3774 * try to do this in station mode. 3775 */ 3776 if (wpa_driver_nl80211_set_mode( 3777 bss, NL80211_IFTYPE_STATION)) 3778 goto nla_put_failure; 3779 3780 if (wpa_driver_nl80211_scan(bss, params)) { 3781 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3782 goto nla_put_failure; 3783 } 3784 3785 /* Restore AP mode when processing scan results */ 3786 drv->ap_scan_as_station = drv->nlmode; 3787 ret = 0; 3788 } else 3789 goto nla_put_failure; 3790#else /* HOSTAPD */ 3791 goto nla_put_failure; 3792#endif /* HOSTAPD */ 3793 } 3794 3795 /* Not all drivers generate "scan completed" wireless event, so try to 3796 * read results after a timeout. */ 3797 timeout = 10; 3798 if (drv->scan_complete_events) { 3799 /* 3800 * The driver seems to deliver events to notify when scan is 3801 * complete, so use longer timeout to avoid race conditions 3802 * with scanning and following association request. 3803 */ 3804 timeout = 30; 3805 } 3806 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3807 "seconds", ret, timeout); 3808 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3809 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3810 drv, drv->ctx); 3811 3812nla_put_failure: 3813 nlmsg_free(msg); 3814 nlmsg_free(rates); 3815 return ret; 3816} 3817 3818 3819/** 3820 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3821 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3822 * @params: Scan parameters 3823 * @interval: Interval between scan cycles in milliseconds 3824 * Returns: 0 on success, -1 on failure or if not supported 3825 */ 3826static int wpa_driver_nl80211_sched_scan(void *priv, 3827 struct wpa_driver_scan_params *params, 3828 u32 interval) 3829{ 3830 struct i802_bss *bss = priv; 3831 struct wpa_driver_nl80211_data *drv = bss->drv; 3832 int ret = -1; 3833 struct nl_msg *msg; 3834 struct nl_msg *match_set_ssid = NULL, *match_sets = NULL; 3835 struct nl_msg *match_set_rssi = NULL; 3836 size_t i; 3837 3838#ifdef ANDROID 3839 if (!drv->capa.sched_scan_supported) 3840 return android_pno_start(bss, params); 3841#endif /* ANDROID */ 3842 3843 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params); 3844 if (!msg) 3845 goto nla_put_failure; 3846 3847 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 3848 3849 if ((drv->num_filter_ssids && 3850 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || 3851 params->filter_rssi) { 3852 match_sets = nlmsg_alloc(); 3853 if (match_sets == NULL) 3854 goto nla_put_failure; 3855 3856 for (i = 0; i < drv->num_filter_ssids; i++) { 3857 wpa_hexdump_ascii(MSG_MSGDUMP, 3858 "nl80211: Sched scan filter SSID", 3859 drv->filter_ssids[i].ssid, 3860 drv->filter_ssids[i].ssid_len); 3861 3862 match_set_ssid = nlmsg_alloc(); 3863 if (match_set_ssid == NULL) 3864 goto nla_put_failure; 3865 NLA_PUT(match_set_ssid, 3866 NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 3867 drv->filter_ssids[i].ssid_len, 3868 drv->filter_ssids[i].ssid); 3869 3870 if (nla_put_nested(match_sets, i + 1, match_set_ssid) < 3871 0) 3872 goto nla_put_failure; 3873 } 3874 3875 if (params->filter_rssi) { 3876 match_set_rssi = nlmsg_alloc(); 3877 if (match_set_rssi == NULL) 3878 goto nla_put_failure; 3879 NLA_PUT_U32(match_set_rssi, 3880 NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 3881 params->filter_rssi); 3882 wpa_printf(MSG_MSGDUMP, 3883 "nl80211: Sched scan RSSI filter %d dBm", 3884 params->filter_rssi); 3885 if (nla_put_nested(match_sets, 0, match_set_rssi) < 0) 3886 goto nla_put_failure; 3887 } 3888 3889 if (nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH, 3890 match_sets) < 0) 3891 goto nla_put_failure; 3892 } 3893 3894 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3895 3896 /* TODO: if we get an error here, we should fall back to normal scan */ 3897 3898 msg = NULL; 3899 if (ret) { 3900 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 3901 "ret=%d (%s)", ret, strerror(-ret)); 3902 goto nla_put_failure; 3903 } 3904 3905 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 3906 "scan interval %d msec", ret, interval); 3907 3908nla_put_failure: 3909 nlmsg_free(match_set_ssid); 3910 nlmsg_free(match_sets); 3911 nlmsg_free(match_set_rssi); 3912 nlmsg_free(msg); 3913 return ret; 3914} 3915 3916 3917/** 3918 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 3919 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3920 * Returns: 0 on success, -1 on failure or if not supported 3921 */ 3922static int wpa_driver_nl80211_stop_sched_scan(void *priv) 3923{ 3924 struct i802_bss *bss = priv; 3925 struct wpa_driver_nl80211_data *drv = bss->drv; 3926 int ret = 0; 3927 struct nl_msg *msg; 3928 3929#ifdef ANDROID 3930 if (!drv->capa.sched_scan_supported) 3931 return android_pno_stop(bss); 3932#endif /* ANDROID */ 3933 3934 msg = nlmsg_alloc(); 3935 if (!msg) 3936 return -1; 3937 3938 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 3939 3940 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3941 3942 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3943 msg = NULL; 3944 if (ret) { 3945 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 3946 "ret=%d (%s)", ret, strerror(-ret)); 3947 goto nla_put_failure; 3948 } 3949 3950 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 3951 3952nla_put_failure: 3953 nlmsg_free(msg); 3954 return ret; 3955} 3956 3957 3958static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 3959{ 3960 const u8 *end, *pos; 3961 3962 if (ies == NULL) 3963 return NULL; 3964 3965 pos = ies; 3966 end = ies + ies_len; 3967 3968 while (pos + 1 < end) { 3969 if (pos + 2 + pos[1] > end) 3970 break; 3971 if (pos[0] == ie) 3972 return pos; 3973 pos += 2 + pos[1]; 3974 } 3975 3976 return NULL; 3977} 3978 3979 3980static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 3981 const u8 *ie, size_t ie_len) 3982{ 3983 const u8 *ssid; 3984 size_t i; 3985 3986 if (drv->filter_ssids == NULL) 3987 return 0; 3988 3989 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 3990 if (ssid == NULL) 3991 return 1; 3992 3993 for (i = 0; i < drv->num_filter_ssids; i++) { 3994 if (ssid[1] == drv->filter_ssids[i].ssid_len && 3995 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 3996 0) 3997 return 0; 3998 } 3999 4000 return 1; 4001} 4002 4003 4004static int bss_info_handler(struct nl_msg *msg, void *arg) 4005{ 4006 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 4007 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4008 struct nlattr *bss[NL80211_BSS_MAX + 1]; 4009 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 4010 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 4011 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 4012 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 4013 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 4014 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 4015 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 4016 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 4017 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 4018 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 4019 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 4020 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 4021 }; 4022 struct nl80211_bss_info_arg *_arg = arg; 4023 struct wpa_scan_results *res = _arg->res; 4024 struct wpa_scan_res **tmp; 4025 struct wpa_scan_res *r; 4026 const u8 *ie, *beacon_ie; 4027 size_t ie_len, beacon_ie_len; 4028 u8 *pos; 4029 size_t i; 4030 4031 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4032 genlmsg_attrlen(gnlh, 0), NULL); 4033 if (!tb[NL80211_ATTR_BSS]) 4034 return NL_SKIP; 4035 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 4036 bss_policy)) 4037 return NL_SKIP; 4038 if (bss[NL80211_BSS_STATUS]) { 4039 enum nl80211_bss_status status; 4040 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4041 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4042 bss[NL80211_BSS_FREQUENCY]) { 4043 _arg->assoc_freq = 4044 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4045 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 4046 _arg->assoc_freq); 4047 } 4048 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4049 bss[NL80211_BSS_BSSID]) { 4050 os_memcpy(_arg->assoc_bssid, 4051 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 4052 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 4053 MACSTR, MAC2STR(_arg->assoc_bssid)); 4054 } 4055 } 4056 if (!res) 4057 return NL_SKIP; 4058 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 4059 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4060 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4061 } else { 4062 ie = NULL; 4063 ie_len = 0; 4064 } 4065 if (bss[NL80211_BSS_BEACON_IES]) { 4066 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 4067 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 4068 } else { 4069 beacon_ie = NULL; 4070 beacon_ie_len = 0; 4071 } 4072 4073 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 4074 ie ? ie_len : beacon_ie_len)) 4075 return NL_SKIP; 4076 4077 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 4078 if (r == NULL) 4079 return NL_SKIP; 4080 if (bss[NL80211_BSS_BSSID]) 4081 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 4082 ETH_ALEN); 4083 if (bss[NL80211_BSS_FREQUENCY]) 4084 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4085 if (bss[NL80211_BSS_BEACON_INTERVAL]) 4086 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 4087 if (bss[NL80211_BSS_CAPABILITY]) 4088 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 4089 r->flags |= WPA_SCAN_NOISE_INVALID; 4090 if (bss[NL80211_BSS_SIGNAL_MBM]) { 4091 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 4092 r->level /= 100; /* mBm to dBm */ 4093 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 4094 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 4095 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 4096 r->flags |= WPA_SCAN_QUAL_INVALID; 4097 } else 4098 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 4099 if (bss[NL80211_BSS_TSF]) 4100 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 4101 if (bss[NL80211_BSS_SEEN_MS_AGO]) 4102 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 4103 r->ie_len = ie_len; 4104 pos = (u8 *) (r + 1); 4105 if (ie) { 4106 os_memcpy(pos, ie, ie_len); 4107 pos += ie_len; 4108 } 4109 r->beacon_ie_len = beacon_ie_len; 4110 if (beacon_ie) 4111 os_memcpy(pos, beacon_ie, beacon_ie_len); 4112 4113 if (bss[NL80211_BSS_STATUS]) { 4114 enum nl80211_bss_status status; 4115 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4116 switch (status) { 4117 case NL80211_BSS_STATUS_AUTHENTICATED: 4118 r->flags |= WPA_SCAN_AUTHENTICATED; 4119 break; 4120 case NL80211_BSS_STATUS_ASSOCIATED: 4121 r->flags |= WPA_SCAN_ASSOCIATED; 4122 break; 4123 default: 4124 break; 4125 } 4126 } 4127 4128 /* 4129 * cfg80211 maintains separate BSS table entries for APs if the same 4130 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 4131 * not use frequency as a separate key in the BSS table, so filter out 4132 * duplicated entries. Prefer associated BSS entry in such a case in 4133 * order to get the correct frequency into the BSS table. 4134 */ 4135 for (i = 0; i < res->num; i++) { 4136 const u8 *s1, *s2; 4137 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 4138 continue; 4139 4140 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 4141 res->res[i]->ie_len, WLAN_EID_SSID); 4142 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 4143 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 4144 os_memcmp(s1, s2, 2 + s1[1]) != 0) 4145 continue; 4146 4147 /* Same BSSID,SSID was already included in scan results */ 4148 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 4149 "for " MACSTR, MAC2STR(r->bssid)); 4150 4151 if ((r->flags & WPA_SCAN_ASSOCIATED) && 4152 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 4153 os_free(res->res[i]); 4154 res->res[i] = r; 4155 } else 4156 os_free(r); 4157 return NL_SKIP; 4158 } 4159 4160 tmp = os_realloc_array(res->res, res->num + 1, 4161 sizeof(struct wpa_scan_res *)); 4162 if (tmp == NULL) { 4163 os_free(r); 4164 return NL_SKIP; 4165 } 4166 tmp[res->num++] = r; 4167 res->res = tmp; 4168 4169 return NL_SKIP; 4170} 4171 4172 4173static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 4174 const u8 *addr) 4175{ 4176 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4177 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4178 "mismatch (" MACSTR ")", MAC2STR(addr)); 4179 wpa_driver_nl80211_mlme(drv, addr, 4180 NL80211_CMD_DEAUTHENTICATE, 4181 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4182 } 4183} 4184 4185 4186static void wpa_driver_nl80211_check_bss_status( 4187 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4188{ 4189 size_t i; 4190 4191 for (i = 0; i < res->num; i++) { 4192 struct wpa_scan_res *r = res->res[i]; 4193 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4194 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4195 "indicates BSS status with " MACSTR 4196 " as authenticated", 4197 MAC2STR(r->bssid)); 4198 if (is_sta_interface(drv->nlmode) && 4199 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4200 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4201 0) { 4202 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4203 " in local state (auth=" MACSTR 4204 " assoc=" MACSTR ")", 4205 MAC2STR(drv->auth_bssid), 4206 MAC2STR(drv->bssid)); 4207 clear_state_mismatch(drv, r->bssid); 4208 } 4209 } 4210 4211 if (r->flags & WPA_SCAN_ASSOCIATED) { 4212 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4213 "indicate BSS status with " MACSTR 4214 " as associated", 4215 MAC2STR(r->bssid)); 4216 if (is_sta_interface(drv->nlmode) && 4217 !drv->associated) { 4218 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4219 "(not associated) does not match " 4220 "with BSS state"); 4221 clear_state_mismatch(drv, r->bssid); 4222 } else if (is_sta_interface(drv->nlmode) && 4223 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4224 0) { 4225 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4226 "(associated with " MACSTR ") does " 4227 "not match with BSS state", 4228 MAC2STR(drv->bssid)); 4229 clear_state_mismatch(drv, r->bssid); 4230 clear_state_mismatch(drv, drv->bssid); 4231 } 4232 } 4233 } 4234} 4235 4236 4237static struct wpa_scan_results * 4238nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4239{ 4240 struct nl_msg *msg; 4241 struct wpa_scan_results *res; 4242 int ret; 4243 struct nl80211_bss_info_arg arg; 4244 4245 res = os_zalloc(sizeof(*res)); 4246 if (res == NULL) 4247 return NULL; 4248 msg = nlmsg_alloc(); 4249 if (!msg) 4250 goto nla_put_failure; 4251 4252 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 4253 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4254 4255 arg.drv = drv; 4256 arg.res = res; 4257 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 4258 msg = NULL; 4259 if (ret == 0) { 4260 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4261 "BSSes)", (unsigned long) res->num); 4262 nl80211_get_noise_for_scan_results(drv, res); 4263 return res; 4264 } 4265 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4266 "(%s)", ret, strerror(-ret)); 4267nla_put_failure: 4268 nlmsg_free(msg); 4269 wpa_scan_results_free(res); 4270 return NULL; 4271} 4272 4273 4274/** 4275 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4276 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4277 * Returns: Scan results on success, -1 on failure 4278 */ 4279static struct wpa_scan_results * 4280wpa_driver_nl80211_get_scan_results(void *priv) 4281{ 4282 struct i802_bss *bss = priv; 4283 struct wpa_driver_nl80211_data *drv = bss->drv; 4284 struct wpa_scan_results *res; 4285 4286 res = nl80211_get_scan_results(drv); 4287 if (res) 4288 wpa_driver_nl80211_check_bss_status(drv, res); 4289 return res; 4290} 4291 4292 4293static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4294{ 4295 struct wpa_scan_results *res; 4296 size_t i; 4297 4298 res = nl80211_get_scan_results(drv); 4299 if (res == NULL) { 4300 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4301 return; 4302 } 4303 4304 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4305 for (i = 0; i < res->num; i++) { 4306 struct wpa_scan_res *r = res->res[i]; 4307 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4308 (int) i, (int) res->num, MAC2STR(r->bssid), 4309 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4310 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4311 } 4312 4313 wpa_scan_results_free(res); 4314} 4315 4316 4317static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss, 4318 enum wpa_alg alg, const u8 *addr, 4319 int key_idx, int set_tx, 4320 const u8 *seq, size_t seq_len, 4321 const u8 *key, size_t key_len) 4322{ 4323 struct wpa_driver_nl80211_data *drv = bss->drv; 4324 int ifindex = if_nametoindex(ifname); 4325 struct nl_msg *msg; 4326 int ret; 4327 4328 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4329 "set_tx=%d seq_len=%lu key_len=%lu", 4330 __func__, ifindex, alg, addr, key_idx, set_tx, 4331 (unsigned long) seq_len, (unsigned long) key_len); 4332#ifdef CONFIG_TDLS 4333 if (key_idx == -1) 4334 key_idx = 0; 4335#endif /* CONFIG_TDLS */ 4336 4337 msg = nlmsg_alloc(); 4338 if (!msg) 4339 return -ENOMEM; 4340 4341 if (alg == WPA_ALG_NONE) { 4342 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4343 } else { 4344 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4345 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4346 switch (alg) { 4347 case WPA_ALG_WEP: 4348 if (key_len == 5) 4349 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4350 WLAN_CIPHER_SUITE_WEP40); 4351 else 4352 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4353 WLAN_CIPHER_SUITE_WEP104); 4354 break; 4355 case WPA_ALG_TKIP: 4356 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4357 WLAN_CIPHER_SUITE_TKIP); 4358 break; 4359 case WPA_ALG_CCMP: 4360 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4361 WLAN_CIPHER_SUITE_CCMP); 4362 break; 4363 case WPA_ALG_GCMP: 4364 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4365 WLAN_CIPHER_SUITE_GCMP); 4366 break; 4367 case WPA_ALG_IGTK: 4368 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4369 WLAN_CIPHER_SUITE_AES_CMAC); 4370 break; 4371 case WPA_ALG_SMS4: 4372 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4373 WLAN_CIPHER_SUITE_SMS4); 4374 break; 4375 case WPA_ALG_KRK: 4376 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4377 WLAN_CIPHER_SUITE_KRK); 4378 break; 4379 default: 4380 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4381 "algorithm %d", __func__, alg); 4382 nlmsg_free(msg); 4383 return -1; 4384 } 4385 } 4386 4387 if (seq && seq_len) 4388 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4389 4390 if (addr && !is_broadcast_ether_addr(addr)) { 4391 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4392 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4393 4394 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4395 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4396 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4397 NL80211_KEYTYPE_GROUP); 4398 } 4399 } else if (addr && is_broadcast_ether_addr(addr)) { 4400 struct nl_msg *types; 4401 int err; 4402 wpa_printf(MSG_DEBUG, " broadcast key"); 4403 types = nlmsg_alloc(); 4404 if (!types) 4405 goto nla_put_failure; 4406 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4407 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4408 types); 4409 nlmsg_free(types); 4410 if (err) 4411 goto nla_put_failure; 4412 } 4413 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4414 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4415 4416 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4417 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4418 ret = 0; 4419 if (ret) 4420 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4421 ret, strerror(-ret)); 4422 4423 /* 4424 * If we failed or don't need to set the default TX key (below), 4425 * we're done here. 4426 */ 4427 if (ret || !set_tx || alg == WPA_ALG_NONE) 4428 return ret; 4429 if (is_ap_interface(drv->nlmode) && addr && 4430 !is_broadcast_ether_addr(addr)) 4431 return ret; 4432 4433 msg = nlmsg_alloc(); 4434 if (!msg) 4435 return -ENOMEM; 4436 4437 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4438 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4439 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4440 if (alg == WPA_ALG_IGTK) 4441 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4442 else 4443 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4444 if (addr && is_broadcast_ether_addr(addr)) { 4445 struct nl_msg *types; 4446 int err; 4447 types = nlmsg_alloc(); 4448 if (!types) 4449 goto nla_put_failure; 4450 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4451 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4452 types); 4453 nlmsg_free(types); 4454 if (err) 4455 goto nla_put_failure; 4456 } else if (addr) { 4457 struct nl_msg *types; 4458 int err; 4459 types = nlmsg_alloc(); 4460 if (!types) 4461 goto nla_put_failure; 4462 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4463 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4464 types); 4465 nlmsg_free(types); 4466 if (err) 4467 goto nla_put_failure; 4468 } 4469 4470 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4471 if (ret == -ENOENT) 4472 ret = 0; 4473 if (ret) 4474 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4475 "err=%d %s)", ret, strerror(-ret)); 4476 return ret; 4477 4478nla_put_failure: 4479 nlmsg_free(msg); 4480 return -ENOBUFS; 4481} 4482 4483 4484static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4485 int key_idx, int defkey, 4486 const u8 *seq, size_t seq_len, 4487 const u8 *key, size_t key_len) 4488{ 4489 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4490 if (!key_attr) 4491 return -1; 4492 4493 if (defkey && alg == WPA_ALG_IGTK) 4494 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4495 else if (defkey) 4496 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4497 4498 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4499 4500 switch (alg) { 4501 case WPA_ALG_WEP: 4502 if (key_len == 5) 4503 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4504 WLAN_CIPHER_SUITE_WEP40); 4505 else 4506 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4507 WLAN_CIPHER_SUITE_WEP104); 4508 break; 4509 case WPA_ALG_TKIP: 4510 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4511 break; 4512 case WPA_ALG_CCMP: 4513 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4514 break; 4515 case WPA_ALG_GCMP: 4516 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); 4517 break; 4518 case WPA_ALG_IGTK: 4519 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4520 WLAN_CIPHER_SUITE_AES_CMAC); 4521 break; 4522 default: 4523 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4524 "algorithm %d", __func__, alg); 4525 return -1; 4526 } 4527 4528 if (seq && seq_len) 4529 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4530 4531 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4532 4533 nla_nest_end(msg, key_attr); 4534 4535 return 0; 4536 nla_put_failure: 4537 return -1; 4538} 4539 4540 4541static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4542 struct nl_msg *msg) 4543{ 4544 int i, privacy = 0; 4545 struct nlattr *nl_keys, *nl_key; 4546 4547 for (i = 0; i < 4; i++) { 4548 if (!params->wep_key[i]) 4549 continue; 4550 privacy = 1; 4551 break; 4552 } 4553 if (params->wps == WPS_MODE_PRIVACY) 4554 privacy = 1; 4555 if (params->pairwise_suite && 4556 params->pairwise_suite != WPA_CIPHER_NONE) 4557 privacy = 1; 4558 4559 if (!privacy) 4560 return 0; 4561 4562 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4563 4564 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4565 if (!nl_keys) 4566 goto nla_put_failure; 4567 4568 for (i = 0; i < 4; i++) { 4569 if (!params->wep_key[i]) 4570 continue; 4571 4572 nl_key = nla_nest_start(msg, i); 4573 if (!nl_key) 4574 goto nla_put_failure; 4575 4576 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4577 params->wep_key[i]); 4578 if (params->wep_key_len[i] == 5) 4579 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4580 WLAN_CIPHER_SUITE_WEP40); 4581 else 4582 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4583 WLAN_CIPHER_SUITE_WEP104); 4584 4585 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4586 4587 if (i == params->wep_tx_keyidx) 4588 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4589 4590 nla_nest_end(msg, nl_key); 4591 } 4592 nla_nest_end(msg, nl_keys); 4593 4594 return 0; 4595 4596nla_put_failure: 4597 return -ENOBUFS; 4598} 4599 4600 4601static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4602 const u8 *addr, int cmd, u16 reason_code, 4603 int local_state_change) 4604{ 4605 int ret = -1; 4606 struct nl_msg *msg; 4607 4608 msg = nlmsg_alloc(); 4609 if (!msg) 4610 return -1; 4611 4612 nl80211_cmd(drv, msg, 0, cmd); 4613 4614 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4615 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4616 if (addr) 4617 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4618 if (local_state_change) 4619 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4620 4621 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4622 msg = NULL; 4623 if (ret) { 4624 wpa_dbg(drv->ctx, MSG_DEBUG, 4625 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4626 reason_code, ret, strerror(-ret)); 4627 goto nla_put_failure; 4628 } 4629 ret = 0; 4630 4631nla_put_failure: 4632 nlmsg_free(msg); 4633 return ret; 4634} 4635 4636 4637static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4638 int reason_code) 4639{ 4640 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code); 4641 drv->associated = 0; 4642 drv->ignore_next_local_disconnect = 0; 4643 /* Disconnect command doesn't need BSSID - it uses cached value */ 4644 return wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT, 4645 reason_code, 0); 4646} 4647 4648 4649static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss, 4650 const u8 *addr, int reason_code) 4651{ 4652 struct wpa_driver_nl80211_data *drv = bss->drv; 4653 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4654 return wpa_driver_nl80211_disconnect(drv, reason_code); 4655 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4656 __func__, MAC2STR(addr), reason_code); 4657 drv->associated = 0; 4658 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4659 return nl80211_leave_ibss(drv); 4660 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4661 reason_code, 0); 4662} 4663 4664 4665static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4666 struct wpa_driver_auth_params *params) 4667{ 4668 int i; 4669 4670 drv->auth_freq = params->freq; 4671 drv->auth_alg = params->auth_alg; 4672 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4673 drv->auth_local_state_change = params->local_state_change; 4674 drv->auth_p2p = params->p2p; 4675 4676 if (params->bssid) 4677 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4678 else 4679 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4680 4681 if (params->ssid) { 4682 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4683 drv->auth_ssid_len = params->ssid_len; 4684 } else 4685 drv->auth_ssid_len = 0; 4686 4687 4688 os_free(drv->auth_ie); 4689 drv->auth_ie = NULL; 4690 drv->auth_ie_len = 0; 4691 if (params->ie) { 4692 drv->auth_ie = os_malloc(params->ie_len); 4693 if (drv->auth_ie) { 4694 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4695 drv->auth_ie_len = params->ie_len; 4696 } 4697 } 4698 4699 for (i = 0; i < 4; i++) { 4700 if (params->wep_key[i] && params->wep_key_len[i] && 4701 params->wep_key_len[i] <= 16) { 4702 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4703 params->wep_key_len[i]); 4704 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4705 } else 4706 drv->auth_wep_key_len[i] = 0; 4707 } 4708} 4709 4710 4711static int wpa_driver_nl80211_authenticate( 4712 struct i802_bss *bss, struct wpa_driver_auth_params *params) 4713{ 4714 struct wpa_driver_nl80211_data *drv = bss->drv; 4715 int ret = -1, i; 4716 struct nl_msg *msg; 4717 enum nl80211_auth_type type; 4718 enum nl80211_iftype nlmode; 4719 int count = 0; 4720 int is_retry; 4721 4722 is_retry = drv->retry_auth; 4723 drv->retry_auth = 0; 4724 4725 drv->associated = 0; 4726 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4727 /* FIX: IBSS mode */ 4728 nlmode = params->p2p ? 4729 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4730 if (drv->nlmode != nlmode && 4731 wpa_driver_nl80211_set_mode(bss, nlmode) < 0) 4732 return -1; 4733 4734retry: 4735 msg = nlmsg_alloc(); 4736 if (!msg) 4737 return -1; 4738 4739 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4740 drv->ifindex); 4741 4742 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4743 4744 for (i = 0; i < 4; i++) { 4745 if (!params->wep_key[i]) 4746 continue; 4747 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP, 4748 NULL, i, 4749 i == params->wep_tx_keyidx, NULL, 0, 4750 params->wep_key[i], 4751 params->wep_key_len[i]); 4752 if (params->wep_tx_keyidx != i) 4753 continue; 4754 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4755 params->wep_key[i], params->wep_key_len[i])) { 4756 nlmsg_free(msg); 4757 return -1; 4758 } 4759 } 4760 4761 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4762 if (params->bssid) { 4763 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4764 MAC2STR(params->bssid)); 4765 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4766 } 4767 if (params->freq) { 4768 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4769 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4770 } 4771 if (params->ssid) { 4772 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4773 params->ssid, params->ssid_len); 4774 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4775 params->ssid); 4776 } 4777 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4778 if (params->ie) 4779 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4780 if (params->sae_data) { 4781 wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data, 4782 params->sae_data_len); 4783 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len, 4784 params->sae_data); 4785 } 4786 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4787 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4788 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4789 type = NL80211_AUTHTYPE_SHARED_KEY; 4790 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4791 type = NL80211_AUTHTYPE_NETWORK_EAP; 4792 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4793 type = NL80211_AUTHTYPE_FT; 4794 else if (params->auth_alg & WPA_AUTH_ALG_SAE) 4795 type = NL80211_AUTHTYPE_SAE; 4796 else 4797 goto nla_put_failure; 4798 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4799 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4800 if (params->local_state_change) { 4801 wpa_printf(MSG_DEBUG, " * Local state change only"); 4802 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4803 } 4804 4805 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4806 msg = NULL; 4807 if (ret) { 4808 wpa_dbg(drv->ctx, MSG_DEBUG, 4809 "nl80211: MLME command failed (auth): ret=%d (%s)", 4810 ret, strerror(-ret)); 4811 count++; 4812 if (ret == -EALREADY && count == 1 && params->bssid && 4813 !params->local_state_change) { 4814 /* 4815 * mac80211 does not currently accept new 4816 * authentication if we are already authenticated. As a 4817 * workaround, force deauthentication and try again. 4818 */ 4819 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4820 "after forced deauthentication"); 4821 wpa_driver_nl80211_deauthenticate( 4822 bss, params->bssid, 4823 WLAN_REASON_PREV_AUTH_NOT_VALID); 4824 nlmsg_free(msg); 4825 goto retry; 4826 } 4827 4828 if (ret == -ENOENT && params->freq && !is_retry) { 4829 /* 4830 * cfg80211 has likely expired the BSS entry even 4831 * though it was previously available in our internal 4832 * BSS table. To recover quickly, start a single 4833 * channel scan on the specified channel. 4834 */ 4835 struct wpa_driver_scan_params scan; 4836 int freqs[2]; 4837 4838 os_memset(&scan, 0, sizeof(scan)); 4839 scan.num_ssids = 1; 4840 if (params->ssid) { 4841 scan.ssids[0].ssid = params->ssid; 4842 scan.ssids[0].ssid_len = params->ssid_len; 4843 } 4844 freqs[0] = params->freq; 4845 freqs[1] = 0; 4846 scan.freqs = freqs; 4847 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 4848 "channel scan to refresh cfg80211 BSS " 4849 "entry"); 4850 ret = wpa_driver_nl80211_scan(bss, &scan); 4851 if (ret == 0) { 4852 nl80211_copy_auth_params(drv, params); 4853 drv->scan_for_auth = 1; 4854 } 4855 } else if (is_retry) { 4856 /* 4857 * Need to indicate this with an event since the return 4858 * value from the retry is not delivered to core code. 4859 */ 4860 union wpa_event_data event; 4861 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 4862 "failed"); 4863 os_memset(&event, 0, sizeof(event)); 4864 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 4865 ETH_ALEN); 4866 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 4867 &event); 4868 } 4869 4870 goto nla_put_failure; 4871 } 4872 ret = 0; 4873 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 4874 "successfully"); 4875 4876nla_put_failure: 4877 nlmsg_free(msg); 4878 return ret; 4879} 4880 4881 4882static int wpa_driver_nl80211_authenticate_retry( 4883 struct wpa_driver_nl80211_data *drv) 4884{ 4885 struct wpa_driver_auth_params params; 4886 struct i802_bss *bss = &drv->first_bss; 4887 int i; 4888 4889 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 4890 4891 os_memset(¶ms, 0, sizeof(params)); 4892 params.freq = drv->auth_freq; 4893 params.auth_alg = drv->auth_alg; 4894 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 4895 params.local_state_change = drv->auth_local_state_change; 4896 params.p2p = drv->auth_p2p; 4897 4898 if (!is_zero_ether_addr(drv->auth_bssid_)) 4899 params.bssid = drv->auth_bssid_; 4900 4901 if (drv->auth_ssid_len) { 4902 params.ssid = drv->auth_ssid; 4903 params.ssid_len = drv->auth_ssid_len; 4904 } 4905 4906 params.ie = drv->auth_ie; 4907 params.ie_len = drv->auth_ie_len; 4908 4909 for (i = 0; i < 4; i++) { 4910 if (drv->auth_wep_key_len[i]) { 4911 params.wep_key[i] = drv->auth_wep_key[i]; 4912 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 4913 } 4914 } 4915 4916 drv->retry_auth = 1; 4917 return wpa_driver_nl80211_authenticate(bss, ¶ms); 4918} 4919 4920 4921struct phy_info_arg { 4922 u16 *num_modes; 4923 struct hostapd_hw_modes *modes; 4924}; 4925 4926static int phy_info_handler(struct nl_msg *msg, void *arg) 4927{ 4928 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 4929 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4930 struct phy_info_arg *phy_info = arg; 4931 4932 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 4933 4934 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 4935 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 4936 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 4937 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 4938 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 4939 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 4940 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 4941 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 4942 }; 4943 4944 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 4945 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 4946 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 4947 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG }, 4948 }; 4949 4950 struct nlattr *nl_band; 4951 struct nlattr *nl_freq; 4952 struct nlattr *nl_rate; 4953 int rem_band, rem_freq, rem_rate; 4954 struct hostapd_hw_modes *mode; 4955 int idx, mode_is_set; 4956 4957 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4958 genlmsg_attrlen(gnlh, 0), NULL); 4959 4960 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 4961 return NL_SKIP; 4962 4963 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) { 4964 mode = os_realloc_array(phy_info->modes, 4965 *phy_info->num_modes + 1, 4966 sizeof(*mode)); 4967 if (!mode) 4968 return NL_SKIP; 4969 phy_info->modes = mode; 4970 4971 mode_is_set = 0; 4972 4973 mode = &phy_info->modes[*(phy_info->num_modes)]; 4974 memset(mode, 0, sizeof(*mode)); 4975 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 4976 *(phy_info->num_modes) += 1; 4977 4978 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 4979 nla_len(nl_band), NULL); 4980 4981 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) { 4982 mode->ht_capab = nla_get_u16( 4983 tb_band[NL80211_BAND_ATTR_HT_CAPA]); 4984 } 4985 4986 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) { 4987 mode->a_mpdu_params |= nla_get_u8( 4988 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) & 4989 0x03; 4990 } 4991 4992 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) { 4993 mode->a_mpdu_params |= nla_get_u8( 4994 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) << 4995 2; 4996 } 4997 4998 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] && 4999 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) { 5000 u8 *mcs; 5001 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 5002 os_memcpy(mode->mcs_set, mcs, 16); 5003 } 5004 5005 if (tb_band[NL80211_BAND_ATTR_VHT_CAPA]) { 5006 mode->vht_capab = nla_get_u32( 5007 tb_band[NL80211_BAND_ATTR_VHT_CAPA]); 5008 } 5009 5010 if (tb_band[NL80211_BAND_ATTR_VHT_MCS_SET] && 5011 nla_len(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])) { 5012 u8 *mcs; 5013 mcs = nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 5014 os_memcpy(mode->vht_mcs_set, mcs, 8); 5015 } 5016 5017 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 5018 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 5019 nla_len(nl_freq), freq_policy); 5020 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5021 continue; 5022 mode->num_channels++; 5023 } 5024 5025 mode->channels = os_calloc(mode->num_channels, 5026 sizeof(struct hostapd_channel_data)); 5027 if (!mode->channels) 5028 return NL_SKIP; 5029 5030 idx = 0; 5031 5032 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 5033 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 5034 nla_len(nl_freq), freq_policy); 5035 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5036 continue; 5037 5038 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 5039 mode->channels[idx].flag = 0; 5040 5041 if (!mode_is_set) { 5042 /* crude heuristic */ 5043 if (mode->channels[idx].freq < 4000) 5044 mode->mode = HOSTAPD_MODE_IEEE80211B; 5045 else if (mode->channels[idx].freq > 50000) 5046 mode->mode = HOSTAPD_MODE_IEEE80211AD; 5047 else 5048 mode->mode = HOSTAPD_MODE_IEEE80211A; 5049 mode_is_set = 1; 5050 } 5051 5052 switch (mode->mode) { 5053 case HOSTAPD_MODE_IEEE80211AD: 5054 mode->channels[idx].chan = 5055 (mode->channels[idx].freq - 56160) / 5056 2160; 5057 break; 5058 case HOSTAPD_MODE_IEEE80211A: 5059 mode->channels[idx].chan = 5060 mode->channels[idx].freq / 5 - 1000; 5061 break; 5062 case HOSTAPD_MODE_IEEE80211B: 5063 case HOSTAPD_MODE_IEEE80211G: 5064 if (mode->channels[idx].freq == 2484) 5065 mode->channels[idx].chan = 14; 5066 else 5067 mode->channels[idx].chan = 5068 (mode->channels[idx].freq - 5069 2407) / 5; 5070 break; 5071 default: 5072 break; 5073 } 5074 5075 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5076 mode->channels[idx].flag |= 5077 HOSTAPD_CHAN_DISABLED; 5078 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 5079 mode->channels[idx].flag |= 5080 HOSTAPD_CHAN_PASSIVE_SCAN; 5081 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 5082 mode->channels[idx].flag |= 5083 HOSTAPD_CHAN_NO_IBSS; 5084 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 5085 mode->channels[idx].flag |= 5086 HOSTAPD_CHAN_RADAR; 5087 5088 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 5089 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5090 mode->channels[idx].max_tx_power = 5091 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 5092 5093 idx++; 5094 } 5095 5096 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 5097 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 5098 nla_len(nl_rate), rate_policy); 5099 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5100 continue; 5101 mode->num_rates++; 5102 } 5103 5104 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 5105 if (!mode->rates) 5106 return NL_SKIP; 5107 5108 idx = 0; 5109 5110 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 5111 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 5112 nla_len(nl_rate), rate_policy); 5113 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5114 continue; 5115 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]); 5116 5117 /* crude heuristic */ 5118 if (mode->mode == HOSTAPD_MODE_IEEE80211B && 5119 mode->rates[idx] > 200) 5120 mode->mode = HOSTAPD_MODE_IEEE80211G; 5121 5122 idx++; 5123 } 5124 } 5125 5126 return NL_SKIP; 5127} 5128 5129static struct hostapd_hw_modes * 5130wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes) 5131{ 5132 u16 m; 5133 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 5134 int i, mode11g_idx = -1; 5135 5136 /* If only 802.11g mode is included, use it to construct matching 5137 * 802.11b mode data. */ 5138 5139 for (m = 0; m < *num_modes; m++) { 5140 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 5141 return modes; /* 802.11b already included */ 5142 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 5143 mode11g_idx = m; 5144 } 5145 5146 if (mode11g_idx < 0) 5147 return modes; /* 2.4 GHz band not supported at all */ 5148 5149 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 5150 if (nmodes == NULL) 5151 return modes; /* Could not add 802.11b mode */ 5152 5153 mode = &nmodes[*num_modes]; 5154 os_memset(mode, 0, sizeof(*mode)); 5155 (*num_modes)++; 5156 modes = nmodes; 5157 5158 mode->mode = HOSTAPD_MODE_IEEE80211B; 5159 5160 mode11g = &modes[mode11g_idx]; 5161 mode->num_channels = mode11g->num_channels; 5162 mode->channels = os_malloc(mode11g->num_channels * 5163 sizeof(struct hostapd_channel_data)); 5164 if (mode->channels == NULL) { 5165 (*num_modes)--; 5166 return modes; /* Could not add 802.11b mode */ 5167 } 5168 os_memcpy(mode->channels, mode11g->channels, 5169 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 5170 5171 mode->num_rates = 0; 5172 mode->rates = os_malloc(4 * sizeof(int)); 5173 if (mode->rates == NULL) { 5174 os_free(mode->channels); 5175 (*num_modes)--; 5176 return modes; /* Could not add 802.11b mode */ 5177 } 5178 5179 for (i = 0; i < mode11g->num_rates; i++) { 5180 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 5181 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 5182 continue; 5183 mode->rates[mode->num_rates] = mode11g->rates[i]; 5184 mode->num_rates++; 5185 if (mode->num_rates == 4) 5186 break; 5187 } 5188 5189 if (mode->num_rates == 0) { 5190 os_free(mode->channels); 5191 os_free(mode->rates); 5192 (*num_modes)--; 5193 return modes; /* No 802.11b rates */ 5194 } 5195 5196 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 5197 "information"); 5198 5199 return modes; 5200} 5201 5202 5203static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5204 int end) 5205{ 5206 int c; 5207 5208 for (c = 0; c < mode->num_channels; c++) { 5209 struct hostapd_channel_data *chan = &mode->channels[c]; 5210 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5211 chan->flag |= HOSTAPD_CHAN_HT40; 5212 } 5213} 5214 5215 5216static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5217 int end) 5218{ 5219 int c; 5220 5221 for (c = 0; c < mode->num_channels; c++) { 5222 struct hostapd_channel_data *chan = &mode->channels[c]; 5223 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5224 continue; 5225 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5226 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5227 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5228 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5229 } 5230} 5231 5232 5233static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5234 struct phy_info_arg *results) 5235{ 5236 u32 start, end, max_bw; 5237 u16 m; 5238 5239 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5240 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5241 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5242 return; 5243 5244 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5245 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5246 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5247 5248 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5249 start, end, max_bw); 5250 if (max_bw < 40) 5251 return; 5252 5253 for (m = 0; m < *results->num_modes; m++) { 5254 if (!(results->modes[m].ht_capab & 5255 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5256 continue; 5257 nl80211_set_ht40_mode(&results->modes[m], start, end); 5258 } 5259} 5260 5261 5262static void nl80211_reg_rule_sec(struct nlattr *tb[], 5263 struct phy_info_arg *results) 5264{ 5265 u32 start, end, max_bw; 5266 u16 m; 5267 5268 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5269 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5270 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5271 return; 5272 5273 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5274 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5275 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5276 5277 if (max_bw < 20) 5278 return; 5279 5280 for (m = 0; m < *results->num_modes; m++) { 5281 if (!(results->modes[m].ht_capab & 5282 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5283 continue; 5284 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5285 } 5286} 5287 5288 5289static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5290{ 5291 struct phy_info_arg *results = arg; 5292 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5293 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5294 struct nlattr *nl_rule; 5295 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5296 int rem_rule; 5297 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5298 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5299 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5300 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5301 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5302 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5303 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5304 }; 5305 5306 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5307 genlmsg_attrlen(gnlh, 0), NULL); 5308 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5309 !tb_msg[NL80211_ATTR_REG_RULES]) { 5310 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5311 "available"); 5312 return NL_SKIP; 5313 } 5314 5315 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5316 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5317 5318 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5319 { 5320 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5321 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5322 nl80211_reg_rule_ht40(tb_rule, results); 5323 } 5324 5325 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5326 { 5327 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5328 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5329 nl80211_reg_rule_sec(tb_rule, results); 5330 } 5331 5332 return NL_SKIP; 5333} 5334 5335 5336static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5337 struct phy_info_arg *results) 5338{ 5339 struct nl_msg *msg; 5340 5341 msg = nlmsg_alloc(); 5342 if (!msg) 5343 return -ENOMEM; 5344 5345 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5346 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5347} 5348 5349 5350static struct hostapd_hw_modes * 5351wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5352{ 5353 struct i802_bss *bss = priv; 5354 struct wpa_driver_nl80211_data *drv = bss->drv; 5355 struct nl_msg *msg; 5356 struct phy_info_arg result = { 5357 .num_modes = num_modes, 5358 .modes = NULL, 5359 }; 5360 5361 *num_modes = 0; 5362 *flags = 0; 5363 5364 msg = nlmsg_alloc(); 5365 if (!msg) 5366 return NULL; 5367 5368 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5369 5370 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5371 5372 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5373 nl80211_set_ht40_flags(drv, &result); 5374 return wpa_driver_nl80211_add_11b(result.modes, num_modes); 5375 } 5376 msg = NULL; 5377 nla_put_failure: 5378 nlmsg_free(msg); 5379 return NULL; 5380} 5381 5382 5383static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5384 const void *data, size_t len, 5385 int encrypt, int noack) 5386{ 5387 __u8 rtap_hdr[] = { 5388 0x00, 0x00, /* radiotap version */ 5389 0x0e, 0x00, /* radiotap length */ 5390 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5391 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5392 0x00, /* padding */ 5393 0x00, 0x00, /* RX and TX flags to indicate that */ 5394 0x00, 0x00, /* this is the injected frame directly */ 5395 }; 5396 struct iovec iov[2] = { 5397 { 5398 .iov_base = &rtap_hdr, 5399 .iov_len = sizeof(rtap_hdr), 5400 }, 5401 { 5402 .iov_base = (void *) data, 5403 .iov_len = len, 5404 } 5405 }; 5406 struct msghdr msg = { 5407 .msg_name = NULL, 5408 .msg_namelen = 0, 5409 .msg_iov = iov, 5410 .msg_iovlen = 2, 5411 .msg_control = NULL, 5412 .msg_controllen = 0, 5413 .msg_flags = 0, 5414 }; 5415 int res; 5416 u16 txflags = 0; 5417 5418 if (encrypt) 5419 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5420 5421 if (drv->monitor_sock < 0) { 5422 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5423 "for %s", __func__); 5424 return -1; 5425 } 5426 5427 if (noack) 5428 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5429 WPA_PUT_LE16(&rtap_hdr[12], txflags); 5430 5431 res = sendmsg(drv->monitor_sock, &msg, 0); 5432 if (res < 0) { 5433 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5434 return -1; 5435 } 5436 return 0; 5437} 5438 5439 5440static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5441 const void *data, size_t len, 5442 int encrypt, int noack, 5443 unsigned int freq, int no_cck, 5444 int offchanok, unsigned int wait_time) 5445{ 5446 struct wpa_driver_nl80211_data *drv = bss->drv; 5447 u64 cookie; 5448 5449 if (freq == 0) 5450 freq = bss->freq; 5451 5452 if (drv->use_monitor) 5453 return wpa_driver_nl80211_send_mntr(drv, data, len, 5454 encrypt, noack); 5455 5456 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5457 &cookie, no_cck, noack, offchanok); 5458} 5459 5460 5461static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data, 5462 size_t data_len, int noack, 5463 unsigned int freq, int no_cck, 5464 int offchanok, 5465 unsigned int wait_time) 5466{ 5467 struct wpa_driver_nl80211_data *drv = bss->drv; 5468 struct ieee80211_mgmt *mgmt; 5469 int encrypt = 1; 5470 u16 fc; 5471 5472 mgmt = (struct ieee80211_mgmt *) data; 5473 fc = le_to_host16(mgmt->frame_control); 5474 5475 if (is_sta_interface(drv->nlmode) && 5476 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5477 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5478 /* 5479 * The use of last_mgmt_freq is a bit of a hack, 5480 * but it works due to the single-threaded nature 5481 * of wpa_supplicant. 5482 */ 5483 if (freq == 0) 5484 freq = drv->last_mgmt_freq; 5485 return nl80211_send_frame_cmd(bss, freq, 0, 5486 data, data_len, NULL, 1, noack, 5487 1); 5488 } 5489 5490 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5491 if (freq == 0) 5492 freq = bss->freq; 5493 return nl80211_send_frame_cmd(bss, freq, 5494 (int) freq == bss->freq ? 0 : 5495 wait_time, 5496 data, data_len, 5497 &drv->send_action_cookie, 5498 no_cck, noack, offchanok); 5499 } 5500 5501 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5502 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5503 /* 5504 * Only one of the authentication frame types is encrypted. 5505 * In order for static WEP encryption to work properly (i.e., 5506 * to not encrypt the frame), we need to tell mac80211 about 5507 * the frames that must not be encrypted. 5508 */ 5509 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5510 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5511 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5512 encrypt = 0; 5513 } 5514 5515 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5516 noack, freq, no_cck, offchanok, 5517 wait_time); 5518} 5519 5520 5521static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5522 int slot, int ht_opmode, int ap_isolate, 5523 int *basic_rates) 5524{ 5525 struct wpa_driver_nl80211_data *drv = bss->drv; 5526 struct nl_msg *msg; 5527 5528 msg = nlmsg_alloc(); 5529 if (!msg) 5530 return -ENOMEM; 5531 5532 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5533 5534 if (cts >= 0) 5535 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5536 if (preamble >= 0) 5537 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5538 if (slot >= 0) 5539 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5540 if (ht_opmode >= 0) 5541 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5542 if (ap_isolate >= 0) 5543 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5544 5545 if (basic_rates) { 5546 u8 rates[NL80211_MAX_SUPP_RATES]; 5547 u8 rates_len = 0; 5548 int i; 5549 5550 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5551 i++) 5552 rates[rates_len++] = basic_rates[i] / 5; 5553 5554 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5555 } 5556 5557 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5558 5559 return send_and_recv_msgs(drv, msg, NULL, NULL); 5560 nla_put_failure: 5561 nlmsg_free(msg); 5562 return -ENOBUFS; 5563} 5564 5565 5566static int wpa_driver_nl80211_set_ap(void *priv, 5567 struct wpa_driver_ap_params *params) 5568{ 5569 struct i802_bss *bss = priv; 5570 struct wpa_driver_nl80211_data *drv = bss->drv; 5571 struct nl_msg *msg; 5572 u8 cmd = NL80211_CMD_NEW_BEACON; 5573 int ret; 5574 int beacon_set; 5575 int ifindex = if_nametoindex(bss->ifname); 5576 int num_suites; 5577 u32 suites[10]; 5578 u32 ver; 5579 5580 beacon_set = bss->beacon_set; 5581 5582 msg = nlmsg_alloc(); 5583 if (!msg) 5584 return -ENOMEM; 5585 5586 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5587 beacon_set); 5588 if (beacon_set) 5589 cmd = NL80211_CMD_SET_BEACON; 5590 5591 nl80211_cmd(drv, msg, 0, cmd); 5592 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5593 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5594 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5595 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5596 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5597 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5598 params->ssid); 5599 if (params->proberesp && params->proberesp_len) 5600 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5601 params->proberesp); 5602 switch (params->hide_ssid) { 5603 case NO_SSID_HIDING: 5604 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5605 NL80211_HIDDEN_SSID_NOT_IN_USE); 5606 break; 5607 case HIDDEN_SSID_ZERO_LEN: 5608 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5609 NL80211_HIDDEN_SSID_ZERO_LEN); 5610 break; 5611 case HIDDEN_SSID_ZERO_CONTENTS: 5612 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5613 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5614 break; 5615 } 5616 if (params->privacy) 5617 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5618 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5619 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5620 /* Leave out the attribute */ 5621 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5622 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5623 NL80211_AUTHTYPE_SHARED_KEY); 5624 else 5625 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5626 NL80211_AUTHTYPE_OPEN_SYSTEM); 5627 5628 ver = 0; 5629 if (params->wpa_version & WPA_PROTO_WPA) 5630 ver |= NL80211_WPA_VERSION_1; 5631 if (params->wpa_version & WPA_PROTO_RSN) 5632 ver |= NL80211_WPA_VERSION_2; 5633 if (ver) 5634 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5635 5636 num_suites = 0; 5637 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5638 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5639 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5640 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5641 if (num_suites) { 5642 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5643 num_suites * sizeof(u32), suites); 5644 } 5645 5646 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5647 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5648 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5649 5650 num_suites = 0; 5651 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5652 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5653 if (params->pairwise_ciphers & WPA_CIPHER_GCMP) 5654 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; 5655 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5656 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5657 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5658 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5659 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5660 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5661 if (num_suites) { 5662 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5663 num_suites * sizeof(u32), suites); 5664 } 5665 5666 switch (params->group_cipher) { 5667 case WPA_CIPHER_CCMP: 5668 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5669 WLAN_CIPHER_SUITE_CCMP); 5670 break; 5671 case WPA_CIPHER_GCMP: 5672 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5673 WLAN_CIPHER_SUITE_GCMP); 5674 break; 5675 case WPA_CIPHER_TKIP: 5676 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5677 WLAN_CIPHER_SUITE_TKIP); 5678 break; 5679 case WPA_CIPHER_WEP104: 5680 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5681 WLAN_CIPHER_SUITE_WEP104); 5682 break; 5683 case WPA_CIPHER_WEP40: 5684 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5685 WLAN_CIPHER_SUITE_WEP40); 5686 break; 5687 } 5688 5689 if (params->beacon_ies) { 5690 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5691 wpabuf_head(params->beacon_ies)); 5692 } 5693 if (params->proberesp_ies) { 5694 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5695 wpabuf_len(params->proberesp_ies), 5696 wpabuf_head(params->proberesp_ies)); 5697 } 5698 if (params->assocresp_ies) { 5699 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5700 wpabuf_len(params->assocresp_ies), 5701 wpabuf_head(params->assocresp_ies)); 5702 } 5703 5704 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5705 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5706 params->ap_max_inactivity); 5707 } 5708 5709 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5710 if (ret) { 5711 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5712 ret, strerror(-ret)); 5713 } else { 5714 bss->beacon_set = 1; 5715 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5716 params->short_slot_time, params->ht_opmode, 5717 params->isolate, params->basic_rates); 5718 } 5719 return ret; 5720 nla_put_failure: 5721 nlmsg_free(msg); 5722 return -ENOBUFS; 5723} 5724 5725 5726static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5727 struct hostapd_freq_params *freq) 5728{ 5729 struct wpa_driver_nl80211_data *drv = bss->drv; 5730 struct nl_msg *msg; 5731 int ret; 5732 5733 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d," 5734 " bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 5735 freq->freq, freq->ht_enabled, freq->vht_enabled, 5736 freq->bandwidth, freq->center_freq1, freq->center_freq2); 5737 msg = nlmsg_alloc(); 5738 if (!msg) 5739 return -1; 5740 5741 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5742 5743 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5744 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq); 5745 if (freq->vht_enabled) { 5746 switch (freq->bandwidth) { 5747 case 20: 5748 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5749 NL80211_CHAN_WIDTH_20); 5750 break; 5751 case 40: 5752 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5753 NL80211_CHAN_WIDTH_40); 5754 break; 5755 case 80: 5756 if (freq->center_freq2) 5757 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5758 NL80211_CHAN_WIDTH_80P80); 5759 else 5760 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5761 NL80211_CHAN_WIDTH_80); 5762 break; 5763 case 160: 5764 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5765 NL80211_CHAN_WIDTH_160); 5766 break; 5767 default: 5768 return -1; 5769 } 5770 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1); 5771 if (freq->center_freq2) 5772 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2, 5773 freq->center_freq2); 5774 } else if (freq->ht_enabled) { 5775 switch (freq->sec_channel_offset) { 5776 case -1: 5777 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5778 NL80211_CHAN_HT40MINUS); 5779 break; 5780 case 1: 5781 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5782 NL80211_CHAN_HT40PLUS); 5783 break; 5784 default: 5785 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5786 NL80211_CHAN_HT20); 5787 break; 5788 } 5789 } 5790 5791 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5792 msg = NULL; 5793 if (ret == 0) { 5794 bss->freq = freq->freq; 5795 return 0; 5796 } 5797 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 5798 "%d (%s)", freq->freq, ret, strerror(-ret)); 5799nla_put_failure: 5800 nlmsg_free(msg); 5801 return -1; 5802} 5803 5804 5805static u32 sta_flags_nl80211(int flags) 5806{ 5807 u32 f = 0; 5808 5809 if (flags & WPA_STA_AUTHORIZED) 5810 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 5811 if (flags & WPA_STA_WMM) 5812 f |= BIT(NL80211_STA_FLAG_WME); 5813 if (flags & WPA_STA_SHORT_PREAMBLE) 5814 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 5815 if (flags & WPA_STA_MFP) 5816 f |= BIT(NL80211_STA_FLAG_MFP); 5817 if (flags & WPA_STA_TDLS_PEER) 5818 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 5819 5820 return f; 5821} 5822 5823 5824static int wpa_driver_nl80211_sta_add(void *priv, 5825 struct hostapd_sta_add_params *params) 5826{ 5827 struct i802_bss *bss = priv; 5828 struct wpa_driver_nl80211_data *drv = bss->drv; 5829 struct nl_msg *msg, *wme = NULL; 5830 struct nl80211_sta_flag_update upd; 5831 int ret = -ENOBUFS; 5832 5833 if ((params->flags & WPA_STA_TDLS_PEER) && 5834 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 5835 return -EOPNOTSUPP; 5836 5837 msg = nlmsg_alloc(); 5838 if (!msg) 5839 return -ENOMEM; 5840 5841 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR, 5842 params->set ? "Set" : "Add", MAC2STR(params->addr)); 5843 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 5844 NL80211_CMD_NEW_STATION); 5845 5846 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5847 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 5848 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 5849 params->supp_rates); 5850 wpa_hexdump(MSG_DEBUG, " * supported rates", params->supp_rates, 5851 params->supp_rates_len); 5852 if (!params->set) { 5853 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 5854 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 5855 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 5856 params->listen_interval); 5857 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 5858 params->listen_interval); 5859 } 5860 if (params->ht_capabilities) { 5861 wpa_hexdump(MSG_DEBUG, " * ht_capabilities", 5862 (u8 *) params->ht_capabilities, 5863 sizeof(*params->ht_capabilities)); 5864 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 5865 sizeof(*params->ht_capabilities), 5866 params->ht_capabilities); 5867 } 5868 5869 if (params->vht_capabilities) { 5870 wpa_hexdump(MSG_DEBUG, " * vht_capabilities", 5871 (u8 *) params->vht_capabilities, 5872 sizeof(*params->vht_capabilities)); 5873 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, 5874 sizeof(*params->vht_capabilities), 5875 params->vht_capabilities); 5876 } 5877 5878 wpa_printf(MSG_DEBUG, " * capability=0x%x", params->capability); 5879 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability); 5880 5881 if (params->ext_capab) { 5882 wpa_hexdump(MSG_DEBUG, " * ext_capab", 5883 params->ext_capab, params->ext_capab_len); 5884 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY, 5885 params->ext_capab_len, params->ext_capab); 5886 } 5887 5888 os_memset(&upd, 0, sizeof(upd)); 5889 upd.mask = sta_flags_nl80211(params->flags); 5890 upd.set = upd.mask; 5891 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x", 5892 upd.set, upd.mask); 5893 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 5894 5895 if (params->flags & WPA_STA_WMM) { 5896 wme = nlmsg_alloc(); 5897 if (!wme) 5898 goto nla_put_failure; 5899 5900 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo); 5901 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES, 5902 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 5903 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP, 5904 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) & 5905 WMM_QOSINFO_STA_SP_MASK); 5906 if (nla_put_nested(msg, NL80211_ATTR_STA_WME, wme) < 0) 5907 goto nla_put_failure; 5908 } 5909 5910 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5911 msg = NULL; 5912 if (ret) 5913 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 5914 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 5915 strerror(-ret)); 5916 if (ret == -EEXIST) 5917 ret = 0; 5918 nla_put_failure: 5919 nlmsg_free(wme); 5920 nlmsg_free(msg); 5921 return ret; 5922} 5923 5924 5925static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr) 5926{ 5927 struct wpa_driver_nl80211_data *drv = bss->drv; 5928 struct nl_msg *msg; 5929 int ret; 5930 5931 msg = nlmsg_alloc(); 5932 if (!msg) 5933 return -ENOMEM; 5934 5935 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 5936 5937 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 5938 if_nametoindex(bss->ifname)); 5939 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5940 5941 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5942 if (ret == -ENOENT) 5943 return 0; 5944 return ret; 5945 nla_put_failure: 5946 nlmsg_free(msg); 5947 return -ENOBUFS; 5948} 5949 5950 5951static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 5952 int ifidx) 5953{ 5954 struct nl_msg *msg; 5955 5956 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 5957 5958 /* stop listening for EAPOL on this interface */ 5959 del_ifidx(drv, ifidx); 5960 5961 msg = nlmsg_alloc(); 5962 if (!msg) 5963 goto nla_put_failure; 5964 5965 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 5966 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 5967 5968 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 5969 return; 5970 msg = NULL; 5971 nla_put_failure: 5972 nlmsg_free(msg); 5973 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 5974} 5975 5976 5977static const char * nl80211_iftype_str(enum nl80211_iftype mode) 5978{ 5979 switch (mode) { 5980 case NL80211_IFTYPE_ADHOC: 5981 return "ADHOC"; 5982 case NL80211_IFTYPE_STATION: 5983 return "STATION"; 5984 case NL80211_IFTYPE_AP: 5985 return "AP"; 5986 case NL80211_IFTYPE_MONITOR: 5987 return "MONITOR"; 5988 case NL80211_IFTYPE_P2P_CLIENT: 5989 return "P2P_CLIENT"; 5990 case NL80211_IFTYPE_P2P_GO: 5991 return "P2P_GO"; 5992 default: 5993 return "unknown"; 5994 } 5995} 5996 5997 5998static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 5999 const char *ifname, 6000 enum nl80211_iftype iftype, 6001 const u8 *addr, int wds) 6002{ 6003 struct nl_msg *msg, *flags = NULL; 6004 int ifidx; 6005 int ret = -ENOBUFS; 6006 6007 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 6008 iftype, nl80211_iftype_str(iftype)); 6009 6010 msg = nlmsg_alloc(); 6011 if (!msg) 6012 return -1; 6013 6014 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 6015 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6016 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 6017 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 6018 6019 if (iftype == NL80211_IFTYPE_MONITOR) { 6020 int err; 6021 6022 flags = nlmsg_alloc(); 6023 if (!flags) 6024 goto nla_put_failure; 6025 6026 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); 6027 6028 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); 6029 6030 nlmsg_free(flags); 6031 6032 if (err) 6033 goto nla_put_failure; 6034 } else if (wds) { 6035 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 6036 } 6037 6038 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6039 msg = NULL; 6040 if (ret) { 6041 nla_put_failure: 6042 nlmsg_free(msg); 6043 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 6044 ifname, ret, strerror(-ret)); 6045 return ret; 6046 } 6047 6048 ifidx = if_nametoindex(ifname); 6049 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 6050 ifname, ifidx); 6051 6052 if (ifidx <= 0) 6053 return -1; 6054 6055 /* start listening for EAPOL on this interface */ 6056 add_ifidx(drv, ifidx); 6057 6058 if (addr && iftype != NL80211_IFTYPE_MONITOR && 6059 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 6060 nl80211_remove_iface(drv, ifidx); 6061 return -1; 6062 } 6063 6064 return ifidx; 6065} 6066 6067 6068static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 6069 const char *ifname, enum nl80211_iftype iftype, 6070 const u8 *addr, int wds) 6071{ 6072 int ret; 6073 6074 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 6075 6076 /* if error occurred and interface exists already */ 6077 if (ret == -ENFILE && if_nametoindex(ifname)) { 6078 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 6079 6080 /* Try to remove the interface that was already there. */ 6081 nl80211_remove_iface(drv, if_nametoindex(ifname)); 6082 6083 /* Try to create the interface again */ 6084 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 6085 wds); 6086 } 6087 6088 if (ret >= 0 && is_p2p_interface(iftype)) 6089 nl80211_disable_11b_rates(drv, ret, 1); 6090 6091 return ret; 6092} 6093 6094 6095static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 6096{ 6097 struct ieee80211_hdr *hdr; 6098 u16 fc; 6099 union wpa_event_data event; 6100 6101 hdr = (struct ieee80211_hdr *) buf; 6102 fc = le_to_host16(hdr->frame_control); 6103 6104 os_memset(&event, 0, sizeof(event)); 6105 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 6106 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 6107 event.tx_status.dst = hdr->addr1; 6108 event.tx_status.data = buf; 6109 event.tx_status.data_len = len; 6110 event.tx_status.ack = ok; 6111 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 6112} 6113 6114 6115static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 6116 u8 *buf, size_t len) 6117{ 6118 struct ieee80211_hdr *hdr = (void *)buf; 6119 u16 fc; 6120 union wpa_event_data event; 6121 6122 if (len < sizeof(*hdr)) 6123 return; 6124 6125 fc = le_to_host16(hdr->frame_control); 6126 6127 os_memset(&event, 0, sizeof(event)); 6128 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 6129 event.rx_from_unknown.addr = hdr->addr2; 6130 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 6131 (WLAN_FC_FROMDS | WLAN_FC_TODS); 6132 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 6133} 6134 6135 6136static void handle_frame(struct wpa_driver_nl80211_data *drv, 6137 u8 *buf, size_t len, int datarate, int ssi_signal) 6138{ 6139 struct ieee80211_hdr *hdr; 6140 u16 fc; 6141 union wpa_event_data event; 6142 6143 hdr = (struct ieee80211_hdr *) buf; 6144 fc = le_to_host16(hdr->frame_control); 6145 6146 switch (WLAN_FC_GET_TYPE(fc)) { 6147 case WLAN_FC_TYPE_MGMT: 6148 os_memset(&event, 0, sizeof(event)); 6149 event.rx_mgmt.frame = buf; 6150 event.rx_mgmt.frame_len = len; 6151 event.rx_mgmt.datarate = datarate; 6152 event.rx_mgmt.ssi_signal = ssi_signal; 6153 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 6154 break; 6155 case WLAN_FC_TYPE_CTRL: 6156 /* can only get here with PS-Poll frames */ 6157 wpa_printf(MSG_DEBUG, "CTRL"); 6158 from_unknown_sta(drv, buf, len); 6159 break; 6160 case WLAN_FC_TYPE_DATA: 6161 from_unknown_sta(drv, buf, len); 6162 break; 6163 } 6164} 6165 6166 6167static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 6168{ 6169 struct wpa_driver_nl80211_data *drv = eloop_ctx; 6170 int len; 6171 unsigned char buf[3000]; 6172 struct ieee80211_radiotap_iterator iter; 6173 int ret; 6174 int datarate = 0, ssi_signal = 0; 6175 int injected = 0, failed = 0, rxflags = 0; 6176 6177 len = recv(sock, buf, sizeof(buf), 0); 6178 if (len < 0) { 6179 perror("recv"); 6180 return; 6181 } 6182 6183 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 6184 printf("received invalid radiotap frame\n"); 6185 return; 6186 } 6187 6188 while (1) { 6189 ret = ieee80211_radiotap_iterator_next(&iter); 6190 if (ret == -ENOENT) 6191 break; 6192 if (ret) { 6193 printf("received invalid radiotap frame (%d)\n", ret); 6194 return; 6195 } 6196 switch (iter.this_arg_index) { 6197 case IEEE80211_RADIOTAP_FLAGS: 6198 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 6199 len -= 4; 6200 break; 6201 case IEEE80211_RADIOTAP_RX_FLAGS: 6202 rxflags = 1; 6203 break; 6204 case IEEE80211_RADIOTAP_TX_FLAGS: 6205 injected = 1; 6206 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 6207 IEEE80211_RADIOTAP_F_TX_FAIL; 6208 break; 6209 case IEEE80211_RADIOTAP_DATA_RETRIES: 6210 break; 6211 case IEEE80211_RADIOTAP_CHANNEL: 6212 /* TODO: convert from freq/flags to channel number */ 6213 break; 6214 case IEEE80211_RADIOTAP_RATE: 6215 datarate = *iter.this_arg * 5; 6216 break; 6217 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 6218 ssi_signal = (s8) *iter.this_arg; 6219 break; 6220 } 6221 } 6222 6223 if (rxflags && injected) 6224 return; 6225 6226 if (!injected) 6227 handle_frame(drv, buf + iter.max_length, 6228 len - iter.max_length, datarate, ssi_signal); 6229 else 6230 handle_tx_callback(drv->ctx, buf + iter.max_length, 6231 len - iter.max_length, !failed); 6232} 6233 6234 6235/* 6236 * we post-process the filter code later and rewrite 6237 * this to the offset to the last instruction 6238 */ 6239#define PASS 0xFF 6240#define FAIL 0xFE 6241 6242static struct sock_filter msock_filter_insns[] = { 6243 /* 6244 * do a little-endian load of the radiotap length field 6245 */ 6246 /* load lower byte into A */ 6247 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 6248 /* put it into X (== index register) */ 6249 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6250 /* load upper byte into A */ 6251 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 6252 /* left-shift it by 8 */ 6253 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 6254 /* or with X */ 6255 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 6256 /* put result into X */ 6257 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6258 6259 /* 6260 * Allow management frames through, this also gives us those 6261 * management frames that we sent ourselves with status 6262 */ 6263 /* load the lower byte of the IEEE 802.11 frame control field */ 6264 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6265 /* mask off frame type and version */ 6266 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6267 /* accept frame if it's both 0, fall through otherwise */ 6268 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6269 6270 /* 6271 * TODO: add a bit to radiotap RX flags that indicates 6272 * that the sending station is not associated, then 6273 * add a filter here that filters on our DA and that flag 6274 * to allow us to deauth frames to that bad station. 6275 * 6276 * For now allow all To DS data frames through. 6277 */ 6278 /* load the IEEE 802.11 frame control field */ 6279 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6280 /* mask off frame type, version and DS status */ 6281 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6282 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6283 */ 6284 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6285 6286#if 0 6287 /* 6288 * drop non-data frames 6289 */ 6290 /* load the lower byte of the frame control field */ 6291 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6292 /* mask off QoS bit */ 6293 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6294 /* drop non-data frames */ 6295 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6296#endif 6297 /* load the upper byte of the frame control field */ 6298 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6299 /* mask off toDS/fromDS */ 6300 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6301 /* accept WDS frames */ 6302 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6303 6304 /* 6305 * add header length to index 6306 */ 6307 /* load the lower byte of the frame control field */ 6308 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6309 /* mask off QoS bit */ 6310 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6311 /* right shift it by 6 to give 0 or 2 */ 6312 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6313 /* add data frame header length */ 6314 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6315 /* add index, was start of 802.11 header */ 6316 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6317 /* move to index, now start of LL header */ 6318 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6319 6320 /* 6321 * Accept empty data frames, we use those for 6322 * polling activity. 6323 */ 6324 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6325 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6326 6327 /* 6328 * Accept EAPOL frames 6329 */ 6330 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6331 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6332 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6333 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6334 6335 /* keep these last two statements or change the code below */ 6336 /* return 0 == "DROP" */ 6337 BPF_STMT(BPF_RET | BPF_K, 0), 6338 /* return ~0 == "keep all" */ 6339 BPF_STMT(BPF_RET | BPF_K, ~0), 6340}; 6341 6342static struct sock_fprog msock_filter = { 6343 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6344 .filter = msock_filter_insns, 6345}; 6346 6347 6348static int add_monitor_filter(int s) 6349{ 6350 int idx; 6351 6352 /* rewrite all PASS/FAIL jump offsets */ 6353 for (idx = 0; idx < msock_filter.len; idx++) { 6354 struct sock_filter *insn = &msock_filter_insns[idx]; 6355 6356 if (BPF_CLASS(insn->code) == BPF_JMP) { 6357 if (insn->code == (BPF_JMP|BPF_JA)) { 6358 if (insn->k == PASS) 6359 insn->k = msock_filter.len - idx - 2; 6360 else if (insn->k == FAIL) 6361 insn->k = msock_filter.len - idx - 3; 6362 } 6363 6364 if (insn->jt == PASS) 6365 insn->jt = msock_filter.len - idx - 2; 6366 else if (insn->jt == FAIL) 6367 insn->jt = msock_filter.len - idx - 3; 6368 6369 if (insn->jf == PASS) 6370 insn->jf = msock_filter.len - idx - 2; 6371 else if (insn->jf == FAIL) 6372 insn->jf = msock_filter.len - idx - 3; 6373 } 6374 } 6375 6376 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6377 &msock_filter, sizeof(msock_filter))) { 6378 perror("SO_ATTACH_FILTER"); 6379 return -1; 6380 } 6381 6382 return 0; 6383} 6384 6385 6386static void nl80211_remove_monitor_interface( 6387 struct wpa_driver_nl80211_data *drv) 6388{ 6389 drv->monitor_refcount--; 6390 if (drv->monitor_refcount > 0) 6391 return; 6392 6393 if (drv->monitor_ifidx >= 0) { 6394 nl80211_remove_iface(drv, drv->monitor_ifidx); 6395 drv->monitor_ifidx = -1; 6396 } 6397 if (drv->monitor_sock >= 0) { 6398 eloop_unregister_read_sock(drv->monitor_sock); 6399 close(drv->monitor_sock); 6400 drv->monitor_sock = -1; 6401 } 6402} 6403 6404 6405static int 6406nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6407{ 6408 char buf[IFNAMSIZ]; 6409 struct sockaddr_ll ll; 6410 int optval; 6411 socklen_t optlen; 6412 6413 if (drv->monitor_ifidx >= 0) { 6414 drv->monitor_refcount++; 6415 return 0; 6416 } 6417 6418 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6419 /* 6420 * P2P interface name is of the format p2p-%s-%d. For monitor 6421 * interface name corresponding to P2P GO, replace "p2p-" with 6422 * "mon-" to retain the same interface name length and to 6423 * indicate that it is a monitor interface. 6424 */ 6425 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6426 } else { 6427 /* Non-P2P interface with AP functionality. */ 6428 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6429 } 6430 6431 buf[IFNAMSIZ - 1] = '\0'; 6432 6433 drv->monitor_ifidx = 6434 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6435 0); 6436 6437 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6438 /* 6439 * This is backward compatibility for a few versions of 6440 * the kernel only that didn't advertise the right 6441 * attributes for the only driver that then supported 6442 * AP mode w/o monitor -- ath6kl. 6443 */ 6444 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6445 "monitor interface type - try to run without it"); 6446 drv->device_ap_sme = 1; 6447 } 6448 6449 if (drv->monitor_ifidx < 0) 6450 return -1; 6451 6452 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6453 goto error; 6454 6455 memset(&ll, 0, sizeof(ll)); 6456 ll.sll_family = AF_PACKET; 6457 ll.sll_ifindex = drv->monitor_ifidx; 6458 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6459 if (drv->monitor_sock < 0) { 6460 perror("socket[PF_PACKET,SOCK_RAW]"); 6461 goto error; 6462 } 6463 6464 if (add_monitor_filter(drv->monitor_sock)) { 6465 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6466 "interface; do filtering in user space"); 6467 /* This works, but will cost in performance. */ 6468 } 6469 6470 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6471 perror("monitor socket bind"); 6472 goto error; 6473 } 6474 6475 optlen = sizeof(optval); 6476 optval = 20; 6477 if (setsockopt 6478 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6479 perror("Failed to set socket priority"); 6480 goto error; 6481 } 6482 6483 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6484 drv, NULL)) { 6485 printf("Could not register monitor read socket\n"); 6486 goto error; 6487 } 6488 6489 return 0; 6490 error: 6491 nl80211_remove_monitor_interface(drv); 6492 return -1; 6493} 6494 6495 6496static int nl80211_setup_ap(struct i802_bss *bss) 6497{ 6498 struct wpa_driver_nl80211_data *drv = bss->drv; 6499 6500 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6501 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6502 6503 /* 6504 * Disable Probe Request reporting unless we need it in this way for 6505 * devices that include the AP SME, in the other case (unless using 6506 * monitor iface) we'll get it through the nl_mgmt socket instead. 6507 */ 6508 if (!drv->device_ap_sme) 6509 wpa_driver_nl80211_probe_req_report(bss, 0); 6510 6511 if (!drv->device_ap_sme && !drv->use_monitor) 6512 if (nl80211_mgmt_subscribe_ap(bss)) 6513 return -1; 6514 6515 if (drv->device_ap_sme && !drv->use_monitor) 6516 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6517 return -1; 6518 6519 if (!drv->device_ap_sme && drv->use_monitor && 6520 nl80211_create_monitor_interface(drv) && 6521 !drv->device_ap_sme) 6522 return -1; 6523 6524#ifdef ANDROID_P2P 6525 if (drv->device_ap_sme && drv->use_monitor) 6526 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6527 return -1; 6528 6529 if (drv->use_monitor && 6530 nl80211_create_monitor_interface(drv)) 6531 return -1; 6532#endif 6533 6534 if (drv->device_ap_sme && 6535 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6536 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6537 "Probe Request frame reporting in AP mode"); 6538 /* Try to survive without this */ 6539 } 6540 6541 return 0; 6542} 6543 6544 6545static void nl80211_teardown_ap(struct i802_bss *bss) 6546{ 6547 struct wpa_driver_nl80211_data *drv = bss->drv; 6548 6549 if (drv->device_ap_sme) { 6550 wpa_driver_nl80211_probe_req_report(bss, 0); 6551 if (!drv->use_monitor) 6552 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6553 } else if (drv->use_monitor) 6554 nl80211_remove_monitor_interface(drv); 6555 else 6556 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6557 6558 bss->beacon_set = 0; 6559} 6560 6561 6562static int nl80211_send_eapol_data(struct i802_bss *bss, 6563 const u8 *addr, const u8 *data, 6564 size_t data_len) 6565{ 6566 struct sockaddr_ll ll; 6567 int ret; 6568 6569 if (bss->drv->eapol_tx_sock < 0) { 6570 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6571 return -1; 6572 } 6573 6574 os_memset(&ll, 0, sizeof(ll)); 6575 ll.sll_family = AF_PACKET; 6576 ll.sll_ifindex = bss->ifindex; 6577 ll.sll_protocol = htons(ETH_P_PAE); 6578 ll.sll_halen = ETH_ALEN; 6579 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6580 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6581 (struct sockaddr *) &ll, sizeof(ll)); 6582 if (ret < 0) 6583 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6584 strerror(errno)); 6585 6586 return ret; 6587} 6588 6589 6590static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6591 6592static int wpa_driver_nl80211_hapd_send_eapol( 6593 void *priv, const u8 *addr, const u8 *data, 6594 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6595{ 6596 struct i802_bss *bss = priv; 6597 struct wpa_driver_nl80211_data *drv = bss->drv; 6598 struct ieee80211_hdr *hdr; 6599 size_t len; 6600 u8 *pos; 6601 int res; 6602 int qos = flags & WPA_STA_WMM; 6603#ifndef ANDROID_P2P 6604 if (drv->device_ap_sme || !drv->use_monitor) 6605#else 6606 if (drv->device_ap_sme && !drv->use_monitor) 6607#endif 6608 return nl80211_send_eapol_data(bss, addr, data, data_len); 6609 6610 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6611 data_len; 6612 hdr = os_zalloc(len); 6613 if (hdr == NULL) { 6614 printf("malloc() failed for i802_send_data(len=%lu)\n", 6615 (unsigned long) len); 6616 return -1; 6617 } 6618 6619 hdr->frame_control = 6620 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6621 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6622 if (encrypt) 6623 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6624 if (qos) { 6625 hdr->frame_control |= 6626 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6627 } 6628 6629 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6630 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6631 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6632 pos = (u8 *) (hdr + 1); 6633 6634 if (qos) { 6635 /* Set highest priority in QoS header */ 6636 pos[0] = 7; 6637 pos[1] = 0; 6638 pos += 2; 6639 } 6640 6641 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6642 pos += sizeof(rfc1042_header); 6643 WPA_PUT_BE16(pos, ETH_P_PAE); 6644 pos += 2; 6645 memcpy(pos, data, data_len); 6646 6647 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6648 0, 0, 0, 0); 6649 if (res < 0) { 6650 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6651 "failed: %d (%s)", 6652 (unsigned long) len, errno, strerror(errno)); 6653 } 6654 os_free(hdr); 6655 6656 return res; 6657} 6658 6659 6660static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6661 int total_flags, 6662 int flags_or, int flags_and) 6663{ 6664 struct i802_bss *bss = priv; 6665 struct wpa_driver_nl80211_data *drv = bss->drv; 6666 struct nl_msg *msg, *flags = NULL; 6667 struct nl80211_sta_flag_update upd; 6668 6669 msg = nlmsg_alloc(); 6670 if (!msg) 6671 return -ENOMEM; 6672 6673 flags = nlmsg_alloc(); 6674 if (!flags) { 6675 nlmsg_free(msg); 6676 return -ENOMEM; 6677 } 6678 6679 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6680 6681 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6682 if_nametoindex(bss->ifname)); 6683 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6684 6685 /* 6686 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6687 * can be removed eventually. 6688 */ 6689 if (total_flags & WPA_STA_AUTHORIZED) 6690 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED); 6691 6692 if (total_flags & WPA_STA_WMM) 6693 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME); 6694 6695 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6696 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE); 6697 6698 if (total_flags & WPA_STA_MFP) 6699 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP); 6700 6701 if (total_flags & WPA_STA_TDLS_PEER) 6702 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER); 6703 6704 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags)) 6705 goto nla_put_failure; 6706 6707 os_memset(&upd, 0, sizeof(upd)); 6708 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6709 upd.set = sta_flags_nl80211(flags_or); 6710 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6711 6712 nlmsg_free(flags); 6713 6714 return send_and_recv_msgs(drv, msg, NULL, NULL); 6715 nla_put_failure: 6716 nlmsg_free(msg); 6717 nlmsg_free(flags); 6718 return -ENOBUFS; 6719} 6720 6721 6722static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6723 struct wpa_driver_associate_params *params) 6724{ 6725 enum nl80211_iftype nlmode, old_mode; 6726 struct hostapd_freq_params freq = { 6727 .freq = params->freq, 6728 }; 6729 6730 if (params->p2p) { 6731 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6732 "group (GO)"); 6733 nlmode = NL80211_IFTYPE_P2P_GO; 6734 } else 6735 nlmode = NL80211_IFTYPE_AP; 6736 6737 old_mode = drv->nlmode; 6738 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode)) { 6739 nl80211_remove_monitor_interface(drv); 6740 return -1; 6741 } 6742 6743 if (wpa_driver_nl80211_set_freq(&drv->first_bss, &freq)) { 6744 if (old_mode != nlmode) 6745 wpa_driver_nl80211_set_mode(&drv->first_bss, old_mode); 6746 nl80211_remove_monitor_interface(drv); 6747 return -1; 6748 } 6749 6750 return 0; 6751} 6752 6753 6754static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 6755{ 6756 struct nl_msg *msg; 6757 int ret = -1; 6758 6759 msg = nlmsg_alloc(); 6760 if (!msg) 6761 return -1; 6762 6763 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 6764 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6765 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6766 msg = NULL; 6767 if (ret) { 6768 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 6769 "(%s)", ret, strerror(-ret)); 6770 goto nla_put_failure; 6771 } 6772 6773 ret = 0; 6774 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 6775 6776nla_put_failure: 6777 nlmsg_free(msg); 6778 return ret; 6779} 6780 6781 6782static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 6783 struct wpa_driver_associate_params *params) 6784{ 6785 struct nl_msg *msg; 6786 int ret = -1; 6787 int count = 0; 6788 6789 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 6790 6791 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 6792 NL80211_IFTYPE_ADHOC)) { 6793 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 6794 "IBSS mode"); 6795 return -1; 6796 } 6797 6798retry: 6799 msg = nlmsg_alloc(); 6800 if (!msg) 6801 return -1; 6802 6803 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 6804 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6805 6806 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 6807 goto nla_put_failure; 6808 6809 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6810 params->ssid, params->ssid_len); 6811 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6812 params->ssid); 6813 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6814 drv->ssid_len = params->ssid_len; 6815 6816 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6817 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6818 6819 ret = nl80211_set_conn_keys(params, msg); 6820 if (ret) 6821 goto nla_put_failure; 6822 6823 if (params->bssid && params->fixed_bssid) { 6824 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 6825 MAC2STR(params->bssid)); 6826 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6827 } 6828 6829 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6830 params->key_mgmt_suite == KEY_MGMT_PSK || 6831 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 6832 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 6833 wpa_printf(MSG_DEBUG, " * control port"); 6834 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 6835 } 6836 6837 if (params->wpa_ie) { 6838 wpa_hexdump(MSG_DEBUG, 6839 " * Extra IEs for Beacon/Probe Response frames", 6840 params->wpa_ie, params->wpa_ie_len); 6841 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6842 params->wpa_ie); 6843 } 6844 6845 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6846 msg = NULL; 6847 if (ret) { 6848 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 6849 ret, strerror(-ret)); 6850 count++; 6851 if (ret == -EALREADY && count == 1) { 6852 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 6853 "forced leave"); 6854 nl80211_leave_ibss(drv); 6855 nlmsg_free(msg); 6856 goto retry; 6857 } 6858 6859 goto nla_put_failure; 6860 } 6861 ret = 0; 6862 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 6863 6864nla_put_failure: 6865 nlmsg_free(msg); 6866 return ret; 6867} 6868 6869 6870static int wpa_driver_nl80211_try_connect( 6871 struct wpa_driver_nl80211_data *drv, 6872 struct wpa_driver_associate_params *params) 6873{ 6874 struct nl_msg *msg; 6875 enum nl80211_auth_type type; 6876 int ret = 0; 6877 int algs; 6878 6879 msg = nlmsg_alloc(); 6880 if (!msg) 6881 return -1; 6882 6883 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 6884 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 6885 6886 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6887 if (params->bssid) { 6888 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 6889 MAC2STR(params->bssid)); 6890 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6891 } 6892 if (params->freq) { 6893 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6894 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6895 } 6896 if (params->bg_scan_period >= 0) { 6897 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 6898 params->bg_scan_period); 6899 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 6900 params->bg_scan_period); 6901 } 6902 if (params->ssid) { 6903 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6904 params->ssid, params->ssid_len); 6905 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6906 params->ssid); 6907 if (params->ssid_len > sizeof(drv->ssid)) 6908 goto nla_put_failure; 6909 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6910 drv->ssid_len = params->ssid_len; 6911 } 6912 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 6913 if (params->wpa_ie) 6914 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6915 params->wpa_ie); 6916 6917 algs = 0; 6918 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6919 algs++; 6920 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6921 algs++; 6922 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6923 algs++; 6924 if (algs > 1) { 6925 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 6926 "selection"); 6927 goto skip_auth_type; 6928 } 6929 6930 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6931 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 6932 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6933 type = NL80211_AUTHTYPE_SHARED_KEY; 6934 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6935 type = NL80211_AUTHTYPE_NETWORK_EAP; 6936 else if (params->auth_alg & WPA_AUTH_ALG_FT) 6937 type = NL80211_AUTHTYPE_FT; 6938 else 6939 goto nla_put_failure; 6940 6941 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 6942 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 6943 6944skip_auth_type: 6945 if (params->wpa_proto) { 6946 enum nl80211_wpa_versions ver = 0; 6947 6948 if (params->wpa_proto & WPA_PROTO_WPA) 6949 ver |= NL80211_WPA_VERSION_1; 6950 if (params->wpa_proto & WPA_PROTO_RSN) 6951 ver |= NL80211_WPA_VERSION_2; 6952 6953 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 6954 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 6955 } 6956 6957 if (params->pairwise_suite != CIPHER_NONE) { 6958 int cipher; 6959 6960 switch (params->pairwise_suite) { 6961 case CIPHER_SMS4: 6962 cipher = WLAN_CIPHER_SUITE_SMS4; 6963 break; 6964 case CIPHER_WEP40: 6965 cipher = WLAN_CIPHER_SUITE_WEP40; 6966 break; 6967 case CIPHER_WEP104: 6968 cipher = WLAN_CIPHER_SUITE_WEP104; 6969 break; 6970 case CIPHER_CCMP: 6971 cipher = WLAN_CIPHER_SUITE_CCMP; 6972 break; 6973 case CIPHER_GCMP: 6974 cipher = WLAN_CIPHER_SUITE_GCMP; 6975 break; 6976 case CIPHER_TKIP: 6977 default: 6978 cipher = WLAN_CIPHER_SUITE_TKIP; 6979 break; 6980 } 6981 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 6982 } 6983 6984 if (params->group_suite != CIPHER_NONE) { 6985 int cipher; 6986 6987 switch (params->group_suite) { 6988 case CIPHER_SMS4: 6989 cipher = WLAN_CIPHER_SUITE_SMS4; 6990 break; 6991 case CIPHER_WEP40: 6992 cipher = WLAN_CIPHER_SUITE_WEP40; 6993 break; 6994 case CIPHER_WEP104: 6995 cipher = WLAN_CIPHER_SUITE_WEP104; 6996 break; 6997 case CIPHER_CCMP: 6998 cipher = WLAN_CIPHER_SUITE_CCMP; 6999 break; 7000 case CIPHER_GCMP: 7001 cipher = WLAN_CIPHER_SUITE_GCMP; 7002 break; 7003 case CIPHER_TKIP: 7004 default: 7005 cipher = WLAN_CIPHER_SUITE_TKIP; 7006 break; 7007 } 7008 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7009 } 7010 7011 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7012 params->key_mgmt_suite == KEY_MGMT_PSK || 7013 params->key_mgmt_suite == KEY_MGMT_CCKM) { 7014 int mgmt = WLAN_AKM_SUITE_PSK; 7015 7016 switch (params->key_mgmt_suite) { 7017 case KEY_MGMT_CCKM: 7018 mgmt = WLAN_AKM_SUITE_CCKM; 7019 break; 7020 case KEY_MGMT_802_1X: 7021 mgmt = WLAN_AKM_SUITE_8021X; 7022 break; 7023 case KEY_MGMT_PSK: 7024 default: 7025 mgmt = WLAN_AKM_SUITE_PSK; 7026 break; 7027 } 7028 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 7029 } 7030 7031#ifdef CONFIG_IEEE80211W 7032 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7033 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7034#endif /* CONFIG_IEEE80211W */ 7035 7036 if (params->disable_ht) 7037 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7038 7039 if (params->htcaps && params->htcaps_mask) { 7040 int sz = sizeof(struct ieee80211_ht_capabilities); 7041 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7042 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7043 params->htcaps_mask); 7044 } 7045 7046 ret = nl80211_set_conn_keys(params, msg); 7047 if (ret) 7048 goto nla_put_failure; 7049 7050 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7051 msg = NULL; 7052 if (ret) { 7053 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 7054 "(%s)", ret, strerror(-ret)); 7055 goto nla_put_failure; 7056 } 7057 ret = 0; 7058 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 7059 7060nla_put_failure: 7061 nlmsg_free(msg); 7062 return ret; 7063 7064} 7065 7066 7067static int wpa_driver_nl80211_connect( 7068 struct wpa_driver_nl80211_data *drv, 7069 struct wpa_driver_associate_params *params) 7070{ 7071 int ret = wpa_driver_nl80211_try_connect(drv, params); 7072 if (ret == -EALREADY) { 7073 /* 7074 * cfg80211 does not currently accept new connections if 7075 * we are already connected. As a workaround, force 7076 * disconnection and try again. 7077 */ 7078 wpa_printf(MSG_DEBUG, "nl80211: Explicitly " 7079 "disconnecting before reassociation " 7080 "attempt"); 7081 if (wpa_driver_nl80211_disconnect( 7082 drv, WLAN_REASON_PREV_AUTH_NOT_VALID)) 7083 return -1; 7084 /* Ignore the next local disconnect message. */ 7085 drv->ignore_next_local_disconnect = 1; 7086 ret = wpa_driver_nl80211_try_connect(drv, params); 7087 } 7088 return ret; 7089} 7090 7091 7092static int wpa_driver_nl80211_associate( 7093 void *priv, struct wpa_driver_associate_params *params) 7094{ 7095 struct i802_bss *bss = priv; 7096 struct wpa_driver_nl80211_data *drv = bss->drv; 7097 int ret = -1; 7098 struct nl_msg *msg; 7099 7100 if (params->mode == IEEE80211_MODE_AP) 7101 return wpa_driver_nl80211_ap(drv, params); 7102 7103 if (params->mode == IEEE80211_MODE_IBSS) 7104 return wpa_driver_nl80211_ibss(drv, params); 7105 7106 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 7107 enum nl80211_iftype nlmode = params->p2p ? 7108 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 7109 7110 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 7111 return -1; 7112 return wpa_driver_nl80211_connect(drv, params); 7113 } 7114 7115 drv->associated = 0; 7116 7117 msg = nlmsg_alloc(); 7118 if (!msg) 7119 return -1; 7120 7121 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 7122 drv->ifindex); 7123 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 7124 7125 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7126 if (params->bssid) { 7127 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7128 MAC2STR(params->bssid)); 7129 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7130 } 7131 if (params->freq) { 7132 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7133 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7134 drv->assoc_freq = params->freq; 7135 } else 7136 drv->assoc_freq = 0; 7137 if (params->bg_scan_period >= 0) { 7138 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7139 params->bg_scan_period); 7140 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7141 params->bg_scan_period); 7142 } 7143 if (params->ssid) { 7144 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7145 params->ssid, params->ssid_len); 7146 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7147 params->ssid); 7148 if (params->ssid_len > sizeof(drv->ssid)) 7149 goto nla_put_failure; 7150 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7151 drv->ssid_len = params->ssid_len; 7152 } 7153 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7154 if (params->wpa_ie) 7155 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7156 params->wpa_ie); 7157 7158 if (params->pairwise_suite != CIPHER_NONE) { 7159 int cipher; 7160 7161 switch (params->pairwise_suite) { 7162 case CIPHER_WEP40: 7163 cipher = WLAN_CIPHER_SUITE_WEP40; 7164 break; 7165 case CIPHER_WEP104: 7166 cipher = WLAN_CIPHER_SUITE_WEP104; 7167 break; 7168 case CIPHER_CCMP: 7169 cipher = WLAN_CIPHER_SUITE_CCMP; 7170 break; 7171 case CIPHER_GCMP: 7172 cipher = WLAN_CIPHER_SUITE_GCMP; 7173 break; 7174 case CIPHER_TKIP: 7175 default: 7176 cipher = WLAN_CIPHER_SUITE_TKIP; 7177 break; 7178 } 7179 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 7180 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7181 } 7182 7183 if (params->group_suite != CIPHER_NONE) { 7184 int cipher; 7185 7186 switch (params->group_suite) { 7187 case CIPHER_WEP40: 7188 cipher = WLAN_CIPHER_SUITE_WEP40; 7189 break; 7190 case CIPHER_WEP104: 7191 cipher = WLAN_CIPHER_SUITE_WEP104; 7192 break; 7193 case CIPHER_CCMP: 7194 cipher = WLAN_CIPHER_SUITE_CCMP; 7195 break; 7196 case CIPHER_GCMP: 7197 cipher = WLAN_CIPHER_SUITE_GCMP; 7198 break; 7199 case CIPHER_TKIP: 7200 default: 7201 cipher = WLAN_CIPHER_SUITE_TKIP; 7202 break; 7203 } 7204 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 7205 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7206 } 7207 7208#ifdef CONFIG_IEEE80211W 7209 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7210 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7211#endif /* CONFIG_IEEE80211W */ 7212 7213 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7214 7215 if (params->prev_bssid) { 7216 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 7217 MAC2STR(params->prev_bssid)); 7218 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 7219 params->prev_bssid); 7220 } 7221 7222 if (params->disable_ht) 7223 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7224 7225 if (params->htcaps && params->htcaps_mask) { 7226 int sz = sizeof(struct ieee80211_ht_capabilities); 7227 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7228 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7229 params->htcaps_mask); 7230 } 7231 7232 if (params->p2p) 7233 wpa_printf(MSG_DEBUG, " * P2P group"); 7234 7235 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7236 msg = NULL; 7237 if (ret) { 7238 wpa_dbg(drv->ctx, MSG_DEBUG, 7239 "nl80211: MLME command failed (assoc): ret=%d (%s)", 7240 ret, strerror(-ret)); 7241 nl80211_dump_scan(drv); 7242 goto nla_put_failure; 7243 } 7244 ret = 0; 7245 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 7246 "successfully"); 7247 7248nla_put_failure: 7249 nlmsg_free(msg); 7250 return ret; 7251} 7252 7253 7254static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 7255 int ifindex, enum nl80211_iftype mode) 7256{ 7257 struct nl_msg *msg; 7258 int ret = -ENOBUFS; 7259 7260 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 7261 ifindex, mode, nl80211_iftype_str(mode)); 7262 7263 msg = nlmsg_alloc(); 7264 if (!msg) 7265 return -ENOMEM; 7266 7267 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7268 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7269 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7270 7271 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7272 msg = NULL; 7273 if (!ret) 7274 return 0; 7275nla_put_failure: 7276 nlmsg_free(msg); 7277 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7278 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7279 return ret; 7280} 7281 7282 7283static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7284 enum nl80211_iftype nlmode) 7285{ 7286 struct wpa_driver_nl80211_data *drv = bss->drv; 7287 int ret = -1; 7288 int i; 7289 int was_ap = is_ap_interface(drv->nlmode); 7290 int res; 7291 7292 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7293 if (res == 0) { 7294 drv->nlmode = nlmode; 7295 ret = 0; 7296 goto done; 7297 } 7298 7299 if (res == -ENODEV) 7300 return -1; 7301 7302 if (nlmode == drv->nlmode) { 7303 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7304 "requested mode - ignore error"); 7305 ret = 0; 7306 goto done; /* Already in the requested mode */ 7307 } 7308 7309 /* mac80211 doesn't allow mode changes while the device is up, so 7310 * take the device down, try to set the mode again, and bring the 7311 * device back up. 7312 */ 7313 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7314 "interface down"); 7315 for (i = 0; i < 10; i++) { 7316 res = linux_set_iface_flags(drv->global->ioctl_sock, 7317 bss->ifname, 0); 7318 if (res == -EACCES || res == -ENODEV) 7319 break; 7320 if (res == 0) { 7321 /* Try to set the mode again while the interface is 7322 * down */ 7323 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7324 if (ret == -EACCES) 7325 break; 7326 res = linux_set_iface_flags(drv->global->ioctl_sock, 7327 bss->ifname, 1); 7328 if (res && !ret) 7329 ret = -1; 7330 else if (ret != -EBUSY) 7331 break; 7332 } else 7333 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7334 "interface down"); 7335 os_sleep(0, 100000); 7336 } 7337 7338 if (!ret) { 7339 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7340 "interface is down"); 7341 drv->nlmode = nlmode; 7342 drv->ignore_if_down_event = 1; 7343 } 7344 7345done: 7346 if (ret) { 7347 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7348 "from %d failed", nlmode, drv->nlmode); 7349 return ret; 7350 } 7351 7352 if (is_p2p_interface(nlmode)) 7353 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 7354 else if (drv->disabled_11b_rates) 7355 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 7356 7357 if (is_ap_interface(nlmode)) { 7358 nl80211_mgmt_unsubscribe(bss, "start AP"); 7359 /* Setup additional AP mode functionality if needed */ 7360 if (nl80211_setup_ap(bss)) 7361 return -1; 7362 } else if (was_ap) { 7363 /* Remove additional AP mode functionality */ 7364 nl80211_teardown_ap(bss); 7365 } else { 7366 nl80211_mgmt_unsubscribe(bss, "mode change"); 7367 } 7368 7369 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7370 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7371 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7372 "frame processing - ignore for now"); 7373 7374 return 0; 7375} 7376 7377 7378static int wpa_driver_nl80211_get_capa(void *priv, 7379 struct wpa_driver_capa *capa) 7380{ 7381 struct i802_bss *bss = priv; 7382 struct wpa_driver_nl80211_data *drv = bss->drv; 7383 if (!drv->has_capability) 7384 return -1; 7385 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7386 return 0; 7387} 7388 7389 7390static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7391{ 7392 struct i802_bss *bss = priv; 7393 struct wpa_driver_nl80211_data *drv = bss->drv; 7394 7395 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7396 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7397 drv->operstate = state; 7398 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7399 state ? IF_OPER_UP : IF_OPER_DORMANT); 7400} 7401 7402 7403static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7404{ 7405 struct i802_bss *bss = priv; 7406 struct wpa_driver_nl80211_data *drv = bss->drv; 7407 struct nl_msg *msg; 7408 struct nl80211_sta_flag_update upd; 7409 7410 msg = nlmsg_alloc(); 7411 if (!msg) 7412 return -ENOMEM; 7413 7414 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7415 7416 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7417 if_nametoindex(bss->ifname)); 7418 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7419 7420 os_memset(&upd, 0, sizeof(upd)); 7421 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7422 if (authorized) 7423 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7424 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7425 7426 return send_and_recv_msgs(drv, msg, NULL, NULL); 7427 nla_put_failure: 7428 nlmsg_free(msg); 7429 return -ENOBUFS; 7430} 7431 7432 7433/* Set kernel driver on given frequency (MHz) */ 7434static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7435{ 7436 struct i802_bss *bss = priv; 7437 return wpa_driver_nl80211_set_freq(bss, freq); 7438} 7439 7440 7441#if defined(HOSTAPD) || defined(CONFIG_AP) 7442 7443static inline int min_int(int a, int b) 7444{ 7445 if (a < b) 7446 return a; 7447 return b; 7448} 7449 7450 7451static int get_key_handler(struct nl_msg *msg, void *arg) 7452{ 7453 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7454 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7455 7456 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7457 genlmsg_attrlen(gnlh, 0), NULL); 7458 7459 /* 7460 * TODO: validate the key index and mac address! 7461 * Otherwise, there's a race condition as soon as 7462 * the kernel starts sending key notifications. 7463 */ 7464 7465 if (tb[NL80211_ATTR_KEY_SEQ]) 7466 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7467 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7468 return NL_SKIP; 7469} 7470 7471 7472static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7473 int idx, u8 *seq) 7474{ 7475 struct i802_bss *bss = priv; 7476 struct wpa_driver_nl80211_data *drv = bss->drv; 7477 struct nl_msg *msg; 7478 7479 msg = nlmsg_alloc(); 7480 if (!msg) 7481 return -ENOMEM; 7482 7483 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7484 7485 if (addr) 7486 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7487 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7488 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7489 7490 memset(seq, 0, 6); 7491 7492 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7493 nla_put_failure: 7494 nlmsg_free(msg); 7495 return -ENOBUFS; 7496} 7497 7498 7499static int i802_set_rts(void *priv, int rts) 7500{ 7501 struct i802_bss *bss = priv; 7502 struct wpa_driver_nl80211_data *drv = bss->drv; 7503 struct nl_msg *msg; 7504 int ret = -ENOBUFS; 7505 u32 val; 7506 7507 msg = nlmsg_alloc(); 7508 if (!msg) 7509 return -ENOMEM; 7510 7511 if (rts >= 2347) 7512 val = (u32) -1; 7513 else 7514 val = rts; 7515 7516 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7517 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7518 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7519 7520 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7521 msg = NULL; 7522 if (!ret) 7523 return 0; 7524nla_put_failure: 7525 nlmsg_free(msg); 7526 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7527 "%d (%s)", rts, ret, strerror(-ret)); 7528 return ret; 7529} 7530 7531 7532static int i802_set_frag(void *priv, int frag) 7533{ 7534 struct i802_bss *bss = priv; 7535 struct wpa_driver_nl80211_data *drv = bss->drv; 7536 struct nl_msg *msg; 7537 int ret = -ENOBUFS; 7538 u32 val; 7539 7540 msg = nlmsg_alloc(); 7541 if (!msg) 7542 return -ENOMEM; 7543 7544 if (frag >= 2346) 7545 val = (u32) -1; 7546 else 7547 val = frag; 7548 7549 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7550 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7551 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7552 7553 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7554 msg = NULL; 7555 if (!ret) 7556 return 0; 7557nla_put_failure: 7558 nlmsg_free(msg); 7559 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7560 "%d: %d (%s)", frag, ret, strerror(-ret)); 7561 return ret; 7562} 7563 7564 7565static int i802_flush(void *priv) 7566{ 7567 struct i802_bss *bss = priv; 7568 struct wpa_driver_nl80211_data *drv = bss->drv; 7569 struct nl_msg *msg; 7570 int res; 7571 7572 msg = nlmsg_alloc(); 7573 if (!msg) 7574 return -1; 7575 7576 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7577 7578 /* 7579 * XXX: FIX! this needs to flush all VLANs too 7580 */ 7581 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7582 if_nametoindex(bss->ifname)); 7583 7584 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7585 if (res) { 7586 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7587 "(%s)", res, strerror(-res)); 7588 } 7589 return res; 7590 nla_put_failure: 7591 nlmsg_free(msg); 7592 return -ENOBUFS; 7593} 7594 7595#endif /* HOSTAPD || CONFIG_AP */ 7596 7597 7598static int get_sta_handler(struct nl_msg *msg, void *arg) 7599{ 7600 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7601 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7602 struct hostap_sta_driver_data *data = arg; 7603 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7604 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7605 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7606 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7607 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7608 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7609 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7610 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7611 }; 7612 7613 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7614 genlmsg_attrlen(gnlh, 0), NULL); 7615 7616 /* 7617 * TODO: validate the interface and mac address! 7618 * Otherwise, there's a race condition as soon as 7619 * the kernel starts sending station notifications. 7620 */ 7621 7622 if (!tb[NL80211_ATTR_STA_INFO]) { 7623 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7624 return NL_SKIP; 7625 } 7626 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7627 tb[NL80211_ATTR_STA_INFO], 7628 stats_policy)) { 7629 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7630 return NL_SKIP; 7631 } 7632 7633 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7634 data->inactive_msec = 7635 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7636 if (stats[NL80211_STA_INFO_RX_BYTES]) 7637 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7638 if (stats[NL80211_STA_INFO_TX_BYTES]) 7639 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7640 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7641 data->rx_packets = 7642 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7643 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7644 data->tx_packets = 7645 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7646 if (stats[NL80211_STA_INFO_TX_FAILED]) 7647 data->tx_retry_failed = 7648 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7649 7650 return NL_SKIP; 7651} 7652 7653static int i802_read_sta_data(struct i802_bss *bss, 7654 struct hostap_sta_driver_data *data, 7655 const u8 *addr) 7656{ 7657 struct wpa_driver_nl80211_data *drv = bss->drv; 7658 struct nl_msg *msg; 7659 7660 os_memset(data, 0, sizeof(*data)); 7661 msg = nlmsg_alloc(); 7662 if (!msg) 7663 return -ENOMEM; 7664 7665 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7666 7667 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7668 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7669 7670 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7671 nla_put_failure: 7672 nlmsg_free(msg); 7673 return -ENOBUFS; 7674} 7675 7676 7677#if defined(HOSTAPD) || defined(CONFIG_AP) 7678 7679static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7680 int cw_min, int cw_max, int burst_time) 7681{ 7682 struct i802_bss *bss = priv; 7683 struct wpa_driver_nl80211_data *drv = bss->drv; 7684 struct nl_msg *msg; 7685 struct nlattr *txq, *params; 7686 7687 msg = nlmsg_alloc(); 7688 if (!msg) 7689 return -1; 7690 7691 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7692 7693 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7694 7695 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7696 if (!txq) 7697 goto nla_put_failure; 7698 7699 /* We are only sending parameters for a single TXQ at a time */ 7700 params = nla_nest_start(msg, 1); 7701 if (!params) 7702 goto nla_put_failure; 7703 7704 switch (queue) { 7705 case 0: 7706 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7707 break; 7708 case 1: 7709 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7710 break; 7711 case 2: 7712 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7713 break; 7714 case 3: 7715 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7716 break; 7717 } 7718 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 7719 * 32 usec, so need to convert the value here. */ 7720 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 7721 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 7722 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 7723 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 7724 7725 nla_nest_end(msg, params); 7726 7727 nla_nest_end(msg, txq); 7728 7729 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 7730 return 0; 7731 msg = NULL; 7732 nla_put_failure: 7733 nlmsg_free(msg); 7734 return -1; 7735} 7736 7737 7738static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr, 7739 const char *ifname, int vlan_id) 7740{ 7741 struct wpa_driver_nl80211_data *drv = bss->drv; 7742 struct nl_msg *msg; 7743 int ret = -ENOBUFS; 7744 7745 msg = nlmsg_alloc(); 7746 if (!msg) 7747 return -ENOMEM; 7748 7749 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7750 7751 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7752 if_nametoindex(bss->ifname)); 7753 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7754 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 7755 if_nametoindex(ifname)); 7756 7757 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7758 msg = NULL; 7759 if (ret < 0) { 7760 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 7761 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 7762 MAC2STR(addr), ifname, vlan_id, ret, 7763 strerror(-ret)); 7764 } 7765 nla_put_failure: 7766 nlmsg_free(msg); 7767 return ret; 7768} 7769 7770 7771static int i802_get_inact_sec(void *priv, const u8 *addr) 7772{ 7773 struct hostap_sta_driver_data data; 7774 int ret; 7775 7776 data.inactive_msec = (unsigned long) -1; 7777 ret = i802_read_sta_data(priv, &data, addr); 7778 if (ret || data.inactive_msec == (unsigned long) -1) 7779 return -1; 7780 return data.inactive_msec / 1000; 7781} 7782 7783 7784static int i802_sta_clear_stats(void *priv, const u8 *addr) 7785{ 7786#if 0 7787 /* TODO */ 7788#endif 7789 return 0; 7790} 7791 7792 7793static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 7794 int reason) 7795{ 7796 struct i802_bss *bss = priv; 7797 struct wpa_driver_nl80211_data *drv = bss->drv; 7798 struct ieee80211_mgmt mgmt; 7799 7800 if (drv->device_ap_sme) 7801 return wpa_driver_nl80211_sta_remove(bss, addr); 7802 7803 memset(&mgmt, 0, sizeof(mgmt)); 7804 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7805 WLAN_FC_STYPE_DEAUTH); 7806 memcpy(mgmt.da, addr, ETH_ALEN); 7807 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7808 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7809 mgmt.u.deauth.reason_code = host_to_le16(reason); 7810 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7811 IEEE80211_HDRLEN + 7812 sizeof(mgmt.u.deauth), 0, 0, 0, 0, 7813 0); 7814} 7815 7816 7817static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 7818 int reason) 7819{ 7820 struct i802_bss *bss = priv; 7821 struct wpa_driver_nl80211_data *drv = bss->drv; 7822 struct ieee80211_mgmt mgmt; 7823 7824 if (drv->device_ap_sme) 7825 return wpa_driver_nl80211_sta_remove(bss, addr); 7826 7827 memset(&mgmt, 0, sizeof(mgmt)); 7828 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7829 WLAN_FC_STYPE_DISASSOC); 7830 memcpy(mgmt.da, addr, ETH_ALEN); 7831 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7832 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7833 mgmt.u.disassoc.reason_code = host_to_le16(reason); 7834 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7835 IEEE80211_HDRLEN + 7836 sizeof(mgmt.u.disassoc), 0, 0, 0, 0, 7837 0); 7838} 7839 7840#endif /* HOSTAPD || CONFIG_AP */ 7841 7842#ifdef HOSTAPD 7843 7844static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7845{ 7846 int i; 7847 int *old; 7848 7849 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 7850 ifidx); 7851 for (i = 0; i < drv->num_if_indices; i++) { 7852 if (drv->if_indices[i] == 0) { 7853 drv->if_indices[i] = ifidx; 7854 return; 7855 } 7856 } 7857 7858 if (drv->if_indices != drv->default_if_indices) 7859 old = drv->if_indices; 7860 else 7861 old = NULL; 7862 7863 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 7864 sizeof(int)); 7865 if (!drv->if_indices) { 7866 if (!old) 7867 drv->if_indices = drv->default_if_indices; 7868 else 7869 drv->if_indices = old; 7870 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 7871 "interfaces"); 7872 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 7873 return; 7874 } else if (!old) 7875 os_memcpy(drv->if_indices, drv->default_if_indices, 7876 sizeof(drv->default_if_indices)); 7877 drv->if_indices[drv->num_if_indices] = ifidx; 7878 drv->num_if_indices++; 7879} 7880 7881 7882static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7883{ 7884 int i; 7885 7886 for (i = 0; i < drv->num_if_indices; i++) { 7887 if (drv->if_indices[i] == ifidx) { 7888 drv->if_indices[i] = 0; 7889 break; 7890 } 7891 } 7892} 7893 7894 7895static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7896{ 7897 int i; 7898 7899 for (i = 0; i < drv->num_if_indices; i++) 7900 if (drv->if_indices[i] == ifidx) 7901 return 1; 7902 7903 return 0; 7904} 7905 7906 7907static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 7908 const char *bridge_ifname) 7909{ 7910 struct i802_bss *bss = priv; 7911 struct wpa_driver_nl80211_data *drv = bss->drv; 7912 char name[IFNAMSIZ + 1]; 7913 7914 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 7915 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 7916 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 7917 if (val) { 7918 if (!if_nametoindex(name)) { 7919 if (nl80211_create_iface(drv, name, 7920 NL80211_IFTYPE_AP_VLAN, 7921 NULL, 1) < 0) 7922 return -1; 7923 if (bridge_ifname && 7924 linux_br_add_if(drv->global->ioctl_sock, 7925 bridge_ifname, name) < 0) 7926 return -1; 7927 } 7928 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 7929 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 7930 "interface %s up", name); 7931 } 7932 return i802_set_sta_vlan(priv, addr, name, 0); 7933 } else { 7934 if (bridge_ifname) 7935 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 7936 name); 7937 7938 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 7939 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 7940 name); 7941 } 7942} 7943 7944 7945static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 7946{ 7947 struct wpa_driver_nl80211_data *drv = eloop_ctx; 7948 struct sockaddr_ll lladdr; 7949 unsigned char buf[3000]; 7950 int len; 7951 socklen_t fromlen = sizeof(lladdr); 7952 7953 len = recvfrom(sock, buf, sizeof(buf), 0, 7954 (struct sockaddr *)&lladdr, &fromlen); 7955 if (len < 0) { 7956 perror("recv"); 7957 return; 7958 } 7959 7960 if (have_ifidx(drv, lladdr.sll_ifindex)) 7961 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 7962} 7963 7964 7965static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 7966 struct i802_bss *bss, 7967 const char *brname, const char *ifname) 7968{ 7969 int ifindex; 7970 char in_br[IFNAMSIZ]; 7971 7972 os_strlcpy(bss->brname, brname, IFNAMSIZ); 7973 ifindex = if_nametoindex(brname); 7974 if (ifindex == 0) { 7975 /* 7976 * Bridge was configured, but the bridge device does 7977 * not exist. Try to add it now. 7978 */ 7979 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 7980 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 7981 "bridge interface %s: %s", 7982 brname, strerror(errno)); 7983 return -1; 7984 } 7985 bss->added_bridge = 1; 7986 add_ifidx(drv, if_nametoindex(brname)); 7987 } 7988 7989 if (linux_br_get(in_br, ifname) == 0) { 7990 if (os_strcmp(in_br, brname) == 0) 7991 return 0; /* already in the bridge */ 7992 7993 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 7994 "bridge %s", ifname, in_br); 7995 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 7996 0) { 7997 wpa_printf(MSG_ERROR, "nl80211: Failed to " 7998 "remove interface %s from bridge " 7999 "%s: %s", 8000 ifname, brname, strerror(errno)); 8001 return -1; 8002 } 8003 } 8004 8005 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 8006 ifname, brname); 8007 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 8008 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 8009 "into bridge %s: %s", 8010 ifname, brname, strerror(errno)); 8011 return -1; 8012 } 8013 bss->added_if_into_bridge = 1; 8014 8015 return 0; 8016} 8017 8018 8019static void *i802_init(struct hostapd_data *hapd, 8020 struct wpa_init_params *params) 8021{ 8022 struct wpa_driver_nl80211_data *drv; 8023 struct i802_bss *bss; 8024 size_t i; 8025 char brname[IFNAMSIZ]; 8026 int ifindex, br_ifindex; 8027 int br_added = 0; 8028 8029 bss = wpa_driver_nl80211_init(hapd, params->ifname, 8030 params->global_priv); 8031 if (bss == NULL) 8032 return NULL; 8033 8034 drv = bss->drv; 8035 drv->nlmode = NL80211_IFTYPE_AP; 8036 drv->eapol_sock = -1; 8037 8038 if (linux_br_get(brname, params->ifname) == 0) { 8039 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 8040 params->ifname, brname); 8041 br_ifindex = if_nametoindex(brname); 8042 } else { 8043 brname[0] = '\0'; 8044 br_ifindex = 0; 8045 } 8046 8047 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 8048 drv->if_indices = drv->default_if_indices; 8049 for (i = 0; i < params->num_bridge; i++) { 8050 if (params->bridge[i]) { 8051 ifindex = if_nametoindex(params->bridge[i]); 8052 if (ifindex) 8053 add_ifidx(drv, ifindex); 8054 if (ifindex == br_ifindex) 8055 br_added = 1; 8056 } 8057 } 8058 if (!br_added && br_ifindex && 8059 (params->num_bridge == 0 || !params->bridge[0])) 8060 add_ifidx(drv, br_ifindex); 8061 8062 /* start listening for EAPOL on the default AP interface */ 8063 add_ifidx(drv, drv->ifindex); 8064 8065 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 8066 goto failed; 8067 8068 if (params->bssid) { 8069 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8070 params->bssid)) 8071 goto failed; 8072 } 8073 8074 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 8075 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 8076 "into AP mode", bss->ifname); 8077 goto failed; 8078 } 8079 8080 if (params->num_bridge && params->bridge[0] && 8081 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 8082 goto failed; 8083 8084 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 8085 goto failed; 8086 8087 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 8088 if (drv->eapol_sock < 0) { 8089 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 8090 goto failed; 8091 } 8092 8093 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 8094 { 8095 printf("Could not register read socket for eapol\n"); 8096 goto failed; 8097 } 8098 8099 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8100 params->own_addr)) 8101 goto failed; 8102 8103 memcpy(bss->addr, params->own_addr, ETH_ALEN); 8104 8105 return bss; 8106 8107failed: 8108 wpa_driver_nl80211_deinit(bss); 8109 return NULL; 8110} 8111 8112 8113static void i802_deinit(void *priv) 8114{ 8115 struct i802_bss *bss = priv; 8116 wpa_driver_nl80211_deinit(bss); 8117} 8118 8119#endif /* HOSTAPD */ 8120 8121 8122static enum nl80211_iftype wpa_driver_nl80211_if_type( 8123 enum wpa_driver_if_type type) 8124{ 8125 switch (type) { 8126 case WPA_IF_STATION: 8127 return NL80211_IFTYPE_STATION; 8128 case WPA_IF_P2P_CLIENT: 8129 case WPA_IF_P2P_GROUP: 8130 return NL80211_IFTYPE_P2P_CLIENT; 8131 case WPA_IF_AP_VLAN: 8132 return NL80211_IFTYPE_AP_VLAN; 8133 case WPA_IF_AP_BSS: 8134 return NL80211_IFTYPE_AP; 8135 case WPA_IF_P2P_GO: 8136 return NL80211_IFTYPE_P2P_GO; 8137 } 8138 return -1; 8139} 8140 8141 8142#ifdef CONFIG_P2P 8143 8144static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 8145{ 8146 struct wpa_driver_nl80211_data *drv; 8147 dl_list_for_each(drv, &global->interfaces, 8148 struct wpa_driver_nl80211_data, list) { 8149 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 8150 return 1; 8151 } 8152 return 0; 8153} 8154 8155 8156static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 8157 u8 *new_addr) 8158{ 8159 unsigned int idx; 8160 8161 if (!drv->global) 8162 return -1; 8163 8164 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 8165 for (idx = 0; idx < 64; idx++) { 8166 new_addr[0] = drv->first_bss.addr[0] | 0x02; 8167 new_addr[0] ^= idx << 2; 8168 if (!nl80211_addr_in_use(drv->global, new_addr)) 8169 break; 8170 } 8171 if (idx == 64) 8172 return -1; 8173 8174 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 8175 MACSTR, MAC2STR(new_addr)); 8176 8177 return 0; 8178} 8179 8180#endif /* CONFIG_P2P */ 8181 8182 8183static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 8184 const char *ifname, const u8 *addr, 8185 void *bss_ctx, void **drv_priv, 8186 char *force_ifname, u8 *if_addr, 8187 const char *bridge) 8188{ 8189 struct i802_bss *bss = priv; 8190 struct wpa_driver_nl80211_data *drv = bss->drv; 8191 int ifidx; 8192#ifdef HOSTAPD 8193 struct i802_bss *new_bss = NULL; 8194 8195 if (type == WPA_IF_AP_BSS) { 8196 new_bss = os_zalloc(sizeof(*new_bss)); 8197 if (new_bss == NULL) 8198 return -1; 8199 } 8200#endif /* HOSTAPD */ 8201 8202 if (addr) 8203 os_memcpy(if_addr, addr, ETH_ALEN); 8204 ifidx = nl80211_create_iface(drv, ifname, 8205 wpa_driver_nl80211_if_type(type), addr, 8206 0); 8207 if (ifidx < 0) { 8208#ifdef HOSTAPD 8209 os_free(new_bss); 8210#endif /* HOSTAPD */ 8211 return -1; 8212 } 8213 8214 if (!addr && 8215 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8216 if_addr) < 0) { 8217 nl80211_remove_iface(drv, ifidx); 8218 return -1; 8219 } 8220 8221#ifdef CONFIG_P2P 8222 if (!addr && 8223 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 8224 type == WPA_IF_P2P_GO)) { 8225 /* Enforce unique P2P Interface Address */ 8226 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 8227 8228 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8229 own_addr) < 0 || 8230 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 8231 new_addr) < 0) { 8232 nl80211_remove_iface(drv, ifidx); 8233 return -1; 8234 } 8235 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 8236 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 8237 "for P2P group interface"); 8238 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 8239 nl80211_remove_iface(drv, ifidx); 8240 return -1; 8241 } 8242 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 8243 new_addr) < 0) { 8244 nl80211_remove_iface(drv, ifidx); 8245 return -1; 8246 } 8247 } 8248 os_memcpy(if_addr, new_addr, ETH_ALEN); 8249 } 8250#endif /* CONFIG_P2P */ 8251 8252#ifdef HOSTAPD 8253 if (bridge && 8254 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 8255 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 8256 "interface %s to a bridge %s", ifname, bridge); 8257 nl80211_remove_iface(drv, ifidx); 8258 os_free(new_bss); 8259 return -1; 8260 } 8261 8262 if (type == WPA_IF_AP_BSS) { 8263 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 8264 { 8265 nl80211_remove_iface(drv, ifidx); 8266 os_free(new_bss); 8267 return -1; 8268 } 8269 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 8270 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 8271 new_bss->ifindex = ifidx; 8272 new_bss->drv = drv; 8273 new_bss->next = drv->first_bss.next; 8274 new_bss->freq = drv->first_bss.freq; 8275 new_bss->ctx = bss_ctx; 8276 drv->first_bss.next = new_bss; 8277 if (drv_priv) 8278 *drv_priv = new_bss; 8279 nl80211_init_bss(new_bss); 8280 8281 /* Subscribe management frames for this WPA_IF_AP_BSS */ 8282 if (nl80211_setup_ap(new_bss)) 8283 return -1; 8284 } 8285#endif /* HOSTAPD */ 8286 8287 if (drv->global) 8288 drv->global->if_add_ifindex = ifidx; 8289 8290 return 0; 8291} 8292 8293 8294static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 8295 enum wpa_driver_if_type type, 8296 const char *ifname) 8297{ 8298 struct wpa_driver_nl80211_data *drv = bss->drv; 8299 int ifindex = if_nametoindex(ifname); 8300 8301 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8302 __func__, type, ifname, ifindex); 8303 if (ifindex <= 0) 8304 return -1; 8305 8306 nl80211_remove_iface(drv, ifindex); 8307 8308#ifdef HOSTAPD 8309 if (type != WPA_IF_AP_BSS) 8310 return 0; 8311 8312 if (bss->added_if_into_bridge) { 8313 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8314 bss->ifname) < 0) 8315 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8316 "interface %s from bridge %s: %s", 8317 bss->ifname, bss->brname, strerror(errno)); 8318 } 8319 if (bss->added_bridge) { 8320 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8321 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8322 "bridge %s: %s", 8323 bss->brname, strerror(errno)); 8324 } 8325 8326 if (bss != &drv->first_bss) { 8327 struct i802_bss *tbss; 8328 8329 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8330 if (tbss->next == bss) { 8331 tbss->next = bss->next; 8332 /* Unsubscribe management frames */ 8333 nl80211_teardown_ap(bss); 8334 nl80211_destroy_bss(bss); 8335 os_free(bss); 8336 bss = NULL; 8337 break; 8338 } 8339 } 8340 if (bss) 8341 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8342 "BSS %p in the list", __func__, bss); 8343 } 8344#endif /* HOSTAPD */ 8345 8346 return 0; 8347} 8348 8349 8350static int cookie_handler(struct nl_msg *msg, void *arg) 8351{ 8352 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8353 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8354 u64 *cookie = arg; 8355 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8356 genlmsg_attrlen(gnlh, 0), NULL); 8357 if (tb[NL80211_ATTR_COOKIE]) 8358 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8359 return NL_SKIP; 8360} 8361 8362 8363static int nl80211_send_frame_cmd(struct i802_bss *bss, 8364 unsigned int freq, unsigned int wait, 8365 const u8 *buf, size_t buf_len, 8366 u64 *cookie_out, int no_cck, int no_ack, 8367 int offchanok) 8368{ 8369 struct wpa_driver_nl80211_data *drv = bss->drv; 8370 struct nl_msg *msg; 8371 u64 cookie; 8372 int ret = -1; 8373 8374 msg = nlmsg_alloc(); 8375 if (!msg) 8376 return -1; 8377 8378 wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8379 "no_ack=%d offchanok=%d", 8380 freq, wait, no_cck, no_ack, offchanok); 8381 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8382 8383 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8384 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8385 if (wait) 8386 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8387 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8388 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8389 if (no_cck) 8390 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8391 if (no_ack) 8392 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8393 8394 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8395 8396 cookie = 0; 8397 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8398 msg = NULL; 8399 if (ret) { 8400 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8401 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8402 freq, wait); 8403 goto nla_put_failure; 8404 } 8405 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; " 8406 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8407 (long long unsigned int) cookie); 8408 8409 if (cookie_out) 8410 *cookie_out = no_ack ? (u64) -1 : cookie; 8411 8412nla_put_failure: 8413 nlmsg_free(msg); 8414 return ret; 8415} 8416 8417 8418static int wpa_driver_nl80211_send_action(struct i802_bss *bss, 8419 unsigned int freq, 8420 unsigned int wait_time, 8421 const u8 *dst, const u8 *src, 8422 const u8 *bssid, 8423 const u8 *data, size_t data_len, 8424 int no_cck) 8425{ 8426 struct wpa_driver_nl80211_data *drv = bss->drv; 8427 int ret = -1; 8428 u8 *buf; 8429 struct ieee80211_hdr *hdr; 8430 8431 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8432 "freq=%u MHz wait=%d ms no_cck=%d)", 8433 drv->ifindex, freq, wait_time, no_cck); 8434 8435 buf = os_zalloc(24 + data_len); 8436 if (buf == NULL) 8437 return ret; 8438 os_memcpy(buf + 24, data, data_len); 8439 hdr = (struct ieee80211_hdr *) buf; 8440 hdr->frame_control = 8441 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8442 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8443 os_memcpy(hdr->addr2, src, ETH_ALEN); 8444 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8445 8446 if (is_ap_interface(drv->nlmode)) 8447 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len, 8448 0, freq, no_cck, 1, 8449 wait_time); 8450 else 8451 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8452 24 + data_len, 8453 &drv->send_action_cookie, 8454 no_cck, 0, 1); 8455 8456 os_free(buf); 8457 return ret; 8458} 8459 8460 8461static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8462{ 8463 struct i802_bss *bss = priv; 8464 struct wpa_driver_nl80211_data *drv = bss->drv; 8465 struct nl_msg *msg; 8466 int ret; 8467 8468 msg = nlmsg_alloc(); 8469 if (!msg) 8470 return; 8471 8472 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8473 8474 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8475 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8476 8477 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8478 msg = NULL; 8479 if (ret) 8480 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8481 "(%s)", ret, strerror(-ret)); 8482 8483 nla_put_failure: 8484 nlmsg_free(msg); 8485} 8486 8487 8488static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8489 unsigned int duration) 8490{ 8491 struct i802_bss *bss = priv; 8492 struct wpa_driver_nl80211_data *drv = bss->drv; 8493 struct nl_msg *msg; 8494 int ret; 8495 u64 cookie; 8496 8497 msg = nlmsg_alloc(); 8498 if (!msg) 8499 return -1; 8500 8501 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8502 8503 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8504 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8505 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8506 8507 cookie = 0; 8508 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8509 msg = NULL; 8510 if (ret == 0) { 8511 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8512 "0x%llx for freq=%u MHz duration=%u", 8513 (long long unsigned int) cookie, freq, duration); 8514 drv->remain_on_chan_cookie = cookie; 8515 drv->pending_remain_on_chan = 1; 8516 return 0; 8517 } 8518 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8519 "(freq=%d duration=%u): %d (%s)", 8520 freq, duration, ret, strerror(-ret)); 8521nla_put_failure: 8522 nlmsg_free(msg); 8523 return -1; 8524} 8525 8526 8527static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8528{ 8529 struct i802_bss *bss = priv; 8530 struct wpa_driver_nl80211_data *drv = bss->drv; 8531 struct nl_msg *msg; 8532 int ret; 8533 8534 if (!drv->pending_remain_on_chan) { 8535 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8536 "to cancel"); 8537 return -1; 8538 } 8539 8540 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8541 "0x%llx", 8542 (long long unsigned int) drv->remain_on_chan_cookie); 8543 8544 msg = nlmsg_alloc(); 8545 if (!msg) 8546 return -1; 8547 8548 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8549 8550 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8551 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8552 8553 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8554 msg = NULL; 8555 if (ret == 0) 8556 return 0; 8557 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8558 "%d (%s)", ret, strerror(-ret)); 8559nla_put_failure: 8560 nlmsg_free(msg); 8561 return -1; 8562} 8563 8564 8565static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report) 8566{ 8567 struct wpa_driver_nl80211_data *drv = bss->drv; 8568 8569 if (!report) { 8570 if (bss->nl_preq && drv->device_ap_sme && 8571 is_ap_interface(drv->nlmode)) { 8572 /* 8573 * Do not disable Probe Request reporting that was 8574 * enabled in nl80211_setup_ap(). 8575 */ 8576 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8577 "Probe Request reporting nl_preq=%p while " 8578 "in AP mode", bss->nl_preq); 8579 } else if (bss->nl_preq) { 8580 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8581 "reporting nl_preq=%p", bss->nl_preq); 8582 eloop_unregister_read_sock( 8583 nl_socket_get_fd(bss->nl_preq)); 8584 nl_destroy_handles(&bss->nl_preq); 8585 } 8586 return 0; 8587 } 8588 8589 if (bss->nl_preq) { 8590 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8591 "already on! nl_preq=%p", bss->nl_preq); 8592 return 0; 8593 } 8594 8595 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8596 if (bss->nl_preq == NULL) 8597 return -1; 8598 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8599 "reporting nl_preq=%p", bss->nl_preq); 8600 8601 if (nl80211_register_frame(bss, bss->nl_preq, 8602 (WLAN_FC_TYPE_MGMT << 2) | 8603 (WLAN_FC_STYPE_PROBE_REQ << 4), 8604 NULL, 0) < 0) 8605 goto out_err; 8606 8607 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8608 wpa_driver_nl80211_event_receive, bss->nl_cb, 8609 bss->nl_preq); 8610 8611 return 0; 8612 8613 out_err: 8614 nl_destroy_handles(&bss->nl_preq); 8615 return -1; 8616} 8617 8618 8619static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8620 int ifindex, int disabled) 8621{ 8622 struct nl_msg *msg; 8623 struct nlattr *bands, *band; 8624 int ret; 8625 8626 msg = nlmsg_alloc(); 8627 if (!msg) 8628 return -1; 8629 8630 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8631 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8632 8633 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8634 if (!bands) 8635 goto nla_put_failure; 8636 8637 /* 8638 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8639 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8640 * rates. All 5 GHz rates are left enabled. 8641 */ 8642 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8643 if (!band) 8644 goto nla_put_failure; 8645 if (disabled) { 8646 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8647 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8648 } 8649 nla_nest_end(msg, band); 8650 8651 nla_nest_end(msg, bands); 8652 8653 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8654 msg = NULL; 8655 if (ret) { 8656 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8657 "(%s)", ret, strerror(-ret)); 8658 } else 8659 drv->disabled_11b_rates = disabled; 8660 8661 return ret; 8662 8663nla_put_failure: 8664 nlmsg_free(msg); 8665 return -1; 8666} 8667 8668 8669static int wpa_driver_nl80211_deinit_ap(void *priv) 8670{ 8671 struct i802_bss *bss = priv; 8672 struct wpa_driver_nl80211_data *drv = bss->drv; 8673 if (!is_ap_interface(drv->nlmode)) 8674 return -1; 8675 wpa_driver_nl80211_del_beacon(drv); 8676 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8677} 8678 8679 8680static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8681{ 8682 struct i802_bss *bss = priv; 8683 struct wpa_driver_nl80211_data *drv = bss->drv; 8684 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8685 return -1; 8686 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8687} 8688 8689 8690static void wpa_driver_nl80211_resume(void *priv) 8691{ 8692 struct i802_bss *bss = priv; 8693 struct wpa_driver_nl80211_data *drv = bss->drv; 8694 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8695 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8696 "resume event"); 8697 } 8698} 8699 8700 8701static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8702 const u8 *ies, size_t ies_len) 8703{ 8704 struct i802_bss *bss = priv; 8705 struct wpa_driver_nl80211_data *drv = bss->drv; 8706 int ret; 8707 u8 *data, *pos; 8708 size_t data_len; 8709 const u8 *own_addr = bss->addr; 8710 8711 if (action != 1) { 8712 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8713 "action %d", action); 8714 return -1; 8715 } 8716 8717 /* 8718 * Action frame payload: 8719 * Category[1] = 6 (Fast BSS Transition) 8720 * Action[1] = 1 (Fast BSS Transition Request) 8721 * STA Address 8722 * Target AP Address 8723 * FT IEs 8724 */ 8725 8726 data_len = 2 + 2 * ETH_ALEN + ies_len; 8727 data = os_malloc(data_len); 8728 if (data == NULL) 8729 return -1; 8730 pos = data; 8731 *pos++ = 0x06; /* FT Action category */ 8732 *pos++ = action; 8733 os_memcpy(pos, own_addr, ETH_ALEN); 8734 pos += ETH_ALEN; 8735 os_memcpy(pos, target_ap, ETH_ALEN); 8736 pos += ETH_ALEN; 8737 os_memcpy(pos, ies, ies_len); 8738 8739 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 8740 drv->bssid, own_addr, drv->bssid, 8741 data, data_len, 0); 8742 os_free(data); 8743 8744 return ret; 8745} 8746 8747 8748static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 8749{ 8750 struct i802_bss *bss = priv; 8751 struct wpa_driver_nl80211_data *drv = bss->drv; 8752 struct nl_msg *msg, *cqm = NULL; 8753 int ret = -1; 8754 8755 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 8756 "hysteresis=%d", threshold, hysteresis); 8757 8758 msg = nlmsg_alloc(); 8759 if (!msg) 8760 return -1; 8761 8762 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 8763 8764 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8765 8766 cqm = nlmsg_alloc(); 8767 if (cqm == NULL) 8768 goto nla_put_failure; 8769 8770 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 8771 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 8772 if (nla_put_nested(msg, NL80211_ATTR_CQM, cqm) < 0) 8773 goto nla_put_failure; 8774 8775 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8776 msg = NULL; 8777 8778nla_put_failure: 8779 nlmsg_free(cqm); 8780 nlmsg_free(msg); 8781 return ret; 8782} 8783 8784 8785static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 8786{ 8787 struct i802_bss *bss = priv; 8788 struct wpa_driver_nl80211_data *drv = bss->drv; 8789 int res; 8790 8791 os_memset(si, 0, sizeof(*si)); 8792 res = nl80211_get_link_signal(drv, si); 8793 if (res != 0) 8794 return res; 8795 8796 return nl80211_get_link_noise(drv, si); 8797} 8798 8799 8800static int wpa_driver_nl80211_shared_freq(void *priv) 8801{ 8802 struct i802_bss *bss = priv; 8803 struct wpa_driver_nl80211_data *drv = bss->drv; 8804 struct wpa_driver_nl80211_data *driver; 8805 int freq = 0; 8806 8807 /* 8808 * If the same PHY is in connected state with some other interface, 8809 * then retrieve the assoc freq. 8810 */ 8811 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 8812 drv->phyname); 8813 8814 dl_list_for_each(driver, &drv->global->interfaces, 8815 struct wpa_driver_nl80211_data, list) { 8816 if (drv == driver || 8817 os_strcmp(drv->phyname, driver->phyname) != 0 || 8818#ifdef ANDROID_P2P 8819 (!driver->associated && !is_ap_interface(driver->nlmode))) 8820#else 8821 !driver->associated) 8822#endif 8823 continue; 8824 8825 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 8826 MACSTR, 8827 driver->phyname, driver->first_bss.ifname, 8828 MAC2STR(driver->first_bss.addr)); 8829 if (is_ap_interface(driver->nlmode)) 8830 freq = driver->first_bss.freq; 8831 else 8832 freq = nl80211_get_assoc_freq(driver); 8833 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 8834 drv->phyname, freq); 8835 } 8836 8837 if (!freq) 8838 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 8839 "PHY (%s) in associated state", drv->phyname); 8840 8841 return freq; 8842} 8843 8844 8845static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 8846 int encrypt) 8847{ 8848 struct i802_bss *bss = priv; 8849 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 8850 0, 0, 0, 0); 8851} 8852 8853 8854static int nl80211_set_param(void *priv, const char *param) 8855{ 8856 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 8857 if (param == NULL) 8858 return 0; 8859 8860#ifdef CONFIG_P2P 8861 if (os_strstr(param, "use_p2p_group_interface=1")) { 8862 struct i802_bss *bss = priv; 8863 struct wpa_driver_nl80211_data *drv = bss->drv; 8864 8865 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 8866 "interface"); 8867 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 8868 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 8869 } 8870#ifdef ANDROID_P2P 8871 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 8872 struct i802_bss *bss = priv; 8873 struct wpa_driver_nl80211_data *drv = bss->drv; 8874 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 8875 "concurrency"); 8876 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 8877 } 8878#endif 8879#endif /* CONFIG_P2P */ 8880 8881 return 0; 8882} 8883 8884 8885static void * nl80211_global_init(void) 8886{ 8887 struct nl80211_global *global; 8888 struct netlink_config *cfg; 8889 8890 global = os_zalloc(sizeof(*global)); 8891 if (global == NULL) 8892 return NULL; 8893 global->ioctl_sock = -1; 8894 dl_list_init(&global->interfaces); 8895 global->if_add_ifindex = -1; 8896 8897 cfg = os_zalloc(sizeof(*cfg)); 8898 if (cfg == NULL) 8899 goto err; 8900 8901 cfg->ctx = global; 8902 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 8903 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 8904 global->netlink = netlink_init(cfg); 8905 if (global->netlink == NULL) { 8906 os_free(cfg); 8907 goto err; 8908 } 8909 8910 if (wpa_driver_nl80211_init_nl_global(global) < 0) 8911 goto err; 8912 8913 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 8914 if (global->ioctl_sock < 0) { 8915 perror("socket(PF_INET,SOCK_DGRAM)"); 8916 goto err; 8917 } 8918 8919 return global; 8920 8921err: 8922 nl80211_global_deinit(global); 8923 return NULL; 8924} 8925 8926 8927static void nl80211_global_deinit(void *priv) 8928{ 8929 struct nl80211_global *global = priv; 8930 if (global == NULL) 8931 return; 8932 if (!dl_list_empty(&global->interfaces)) { 8933 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 8934 "nl80211_global_deinit", 8935 dl_list_len(&global->interfaces)); 8936 } 8937 8938 if (global->netlink) 8939 netlink_deinit(global->netlink); 8940 8941 nl_destroy_handles(&global->nl); 8942 8943 if (global->nl_event) { 8944 eloop_unregister_read_sock( 8945 nl_socket_get_fd(global->nl_event)); 8946 nl_destroy_handles(&global->nl_event); 8947 } 8948 8949 nl_cb_put(global->nl_cb); 8950 8951 if (global->ioctl_sock >= 0) 8952 close(global->ioctl_sock); 8953 8954 os_free(global); 8955} 8956 8957 8958static const char * nl80211_get_radio_name(void *priv) 8959{ 8960 struct i802_bss *bss = priv; 8961 struct wpa_driver_nl80211_data *drv = bss->drv; 8962 return drv->phyname; 8963} 8964 8965 8966static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 8967 const u8 *pmkid) 8968{ 8969 struct nl_msg *msg; 8970 8971 msg = nlmsg_alloc(); 8972 if (!msg) 8973 return -ENOMEM; 8974 8975 nl80211_cmd(bss->drv, msg, 0, cmd); 8976 8977 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 8978 if (pmkid) 8979 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 8980 if (bssid) 8981 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 8982 8983 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 8984 nla_put_failure: 8985 nlmsg_free(msg); 8986 return -ENOBUFS; 8987} 8988 8989 8990static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8991{ 8992 struct i802_bss *bss = priv; 8993 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 8994 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 8995} 8996 8997 8998static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8999{ 9000 struct i802_bss *bss = priv; 9001 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 9002 MAC2STR(bssid)); 9003 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 9004} 9005 9006 9007static int nl80211_flush_pmkid(void *priv) 9008{ 9009 struct i802_bss *bss = priv; 9010 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 9011 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 9012} 9013 9014 9015static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 9016 const u8 *replay_ctr) 9017{ 9018 struct i802_bss *bss = priv; 9019 struct wpa_driver_nl80211_data *drv = bss->drv; 9020 struct nlattr *replay_nested; 9021 struct nl_msg *msg; 9022 9023 msg = nlmsg_alloc(); 9024 if (!msg) 9025 return; 9026 9027 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 9028 9029 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9030 9031 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 9032 if (!replay_nested) 9033 goto nla_put_failure; 9034 9035 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 9036 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 9037 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 9038 replay_ctr); 9039 9040 nla_nest_end(msg, replay_nested); 9041 9042 send_and_recv_msgs(drv, msg, NULL, NULL); 9043 return; 9044 nla_put_failure: 9045 nlmsg_free(msg); 9046} 9047 9048 9049static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 9050 const u8 *addr, int qos) 9051{ 9052 /* send data frame to poll STA and check whether 9053 * this frame is ACKed */ 9054 struct { 9055 struct ieee80211_hdr hdr; 9056 u16 qos_ctl; 9057 } STRUCT_PACKED nulldata; 9058 size_t size; 9059 9060 /* Send data frame to poll STA and check whether this frame is ACKed */ 9061 9062 os_memset(&nulldata, 0, sizeof(nulldata)); 9063 9064 if (qos) { 9065 nulldata.hdr.frame_control = 9066 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9067 WLAN_FC_STYPE_QOS_NULL); 9068 size = sizeof(nulldata); 9069 } else { 9070 nulldata.hdr.frame_control = 9071 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9072 WLAN_FC_STYPE_NULLFUNC); 9073 size = sizeof(struct ieee80211_hdr); 9074 } 9075 9076 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 9077 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 9078 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 9079 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 9080 9081 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0, 9082 0, 0) < 0) 9083 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 9084 "send poll frame"); 9085} 9086 9087static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 9088 int qos) 9089{ 9090 struct i802_bss *bss = priv; 9091 struct wpa_driver_nl80211_data *drv = bss->drv; 9092 struct nl_msg *msg; 9093 9094 if (!drv->poll_command_supported) { 9095 nl80211_send_null_frame(bss, own_addr, addr, qos); 9096 return; 9097 } 9098 9099 msg = nlmsg_alloc(); 9100 if (!msg) 9101 return; 9102 9103 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 9104 9105 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9106 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 9107 9108 send_and_recv_msgs(drv, msg, NULL, NULL); 9109 return; 9110 nla_put_failure: 9111 nlmsg_free(msg); 9112} 9113 9114 9115static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 9116{ 9117 struct nl_msg *msg; 9118 9119 msg = nlmsg_alloc(); 9120 if (!msg) 9121 return -ENOMEM; 9122 9123 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 9124 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9125 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 9126 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 9127 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9128nla_put_failure: 9129 nlmsg_free(msg); 9130 return -ENOBUFS; 9131} 9132 9133 9134static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 9135 int ctwindow) 9136{ 9137 struct i802_bss *bss = priv; 9138 9139 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 9140 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 9141 9142 if (opp_ps != -1 || ctwindow != -1) 9143#ifdef ANDROID_P2P 9144 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 9145#else 9146 return -1; /* Not yet supported */ 9147#endif 9148 9149 if (legacy_ps == -1) 9150 return 0; 9151 if (legacy_ps != 0 && legacy_ps != 1) 9152 return -1; /* Not yet supported */ 9153 9154 return nl80211_set_power_save(bss, legacy_ps); 9155} 9156 9157 9158#ifdef CONFIG_TDLS 9159 9160static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 9161 u8 dialog_token, u16 status_code, 9162 const u8 *buf, size_t len) 9163{ 9164 struct i802_bss *bss = priv; 9165 struct wpa_driver_nl80211_data *drv = bss->drv; 9166 struct nl_msg *msg; 9167 9168 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9169 return -EOPNOTSUPP; 9170 9171 if (!dst) 9172 return -EINVAL; 9173 9174 msg = nlmsg_alloc(); 9175 if (!msg) 9176 return -ENOMEM; 9177 9178 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 9179 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9180 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 9181 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 9182 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 9183 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 9184 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 9185 9186 return send_and_recv_msgs(drv, msg, NULL, NULL); 9187 9188nla_put_failure: 9189 nlmsg_free(msg); 9190 return -ENOBUFS; 9191} 9192 9193 9194static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 9195{ 9196 struct i802_bss *bss = priv; 9197 struct wpa_driver_nl80211_data *drv = bss->drv; 9198 struct nl_msg *msg; 9199 enum nl80211_tdls_operation nl80211_oper; 9200 9201 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9202 return -EOPNOTSUPP; 9203 9204 switch (oper) { 9205 case TDLS_DISCOVERY_REQ: 9206 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 9207 break; 9208 case TDLS_SETUP: 9209 nl80211_oper = NL80211_TDLS_SETUP; 9210 break; 9211 case TDLS_TEARDOWN: 9212 nl80211_oper = NL80211_TDLS_TEARDOWN; 9213 break; 9214 case TDLS_ENABLE_LINK: 9215 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 9216 break; 9217 case TDLS_DISABLE_LINK: 9218 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 9219 break; 9220 case TDLS_ENABLE: 9221 return 0; 9222 case TDLS_DISABLE: 9223 return 0; 9224 default: 9225 return -EINVAL; 9226 } 9227 9228 msg = nlmsg_alloc(); 9229 if (!msg) 9230 return -ENOMEM; 9231 9232 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 9233 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 9234 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9235 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 9236 9237 return send_and_recv_msgs(drv, msg, NULL, NULL); 9238 9239nla_put_failure: 9240 nlmsg_free(msg); 9241 return -ENOBUFS; 9242} 9243 9244#endif /* CONFIG TDLS */ 9245 9246 9247#ifdef ANDROID 9248 9249typedef struct android_wifi_priv_cmd { 9250 char *buf; 9251 int used_len; 9252 int total_len; 9253} android_wifi_priv_cmd; 9254 9255static int drv_errors = 0; 9256 9257static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 9258{ 9259 drv_errors++; 9260 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 9261 drv_errors = 0; 9262 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 9263 } 9264} 9265 9266 9267static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 9268{ 9269 struct wpa_driver_nl80211_data *drv = bss->drv; 9270 struct ifreq ifr; 9271 android_wifi_priv_cmd priv_cmd; 9272 char buf[MAX_DRV_CMD_SIZE]; 9273 int ret; 9274 9275 os_memset(&ifr, 0, sizeof(ifr)); 9276 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 9277 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9278 9279 os_memset(buf, 0, sizeof(buf)); 9280 os_strlcpy(buf, cmd, sizeof(buf)); 9281 9282 priv_cmd.buf = buf; 9283 priv_cmd.used_len = sizeof(buf); 9284 priv_cmd.total_len = sizeof(buf); 9285 ifr.ifr_data = &priv_cmd; 9286 9287 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9288 if (ret < 0) { 9289 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9290 __func__); 9291 wpa_driver_send_hang_msg(drv); 9292 return ret; 9293 } 9294 9295 drv_errors = 0; 9296 return 0; 9297} 9298 9299 9300static int android_pno_start(struct i802_bss *bss, 9301 struct wpa_driver_scan_params *params) 9302{ 9303 struct wpa_driver_nl80211_data *drv = bss->drv; 9304 struct ifreq ifr; 9305 android_wifi_priv_cmd priv_cmd; 9306 int ret = 0, i = 0, bp; 9307 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9308 9309 bp = WEXT_PNOSETUP_HEADER_SIZE; 9310 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9311 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9312 buf[bp++] = WEXT_PNO_TLV_VERSION; 9313 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9314 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9315 9316 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9317 /* Check that there is enough space needed for 1 more SSID, the 9318 * other sections and null termination */ 9319 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9320 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9321 break; 9322 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9323 params->ssids[i].ssid, 9324 params->ssids[i].ssid_len); 9325 buf[bp++] = WEXT_PNO_SSID_SECTION; 9326 buf[bp++] = params->ssids[i].ssid_len; 9327 os_memcpy(&buf[bp], params->ssids[i].ssid, 9328 params->ssids[i].ssid_len); 9329 bp += params->ssids[i].ssid_len; 9330 i++; 9331 } 9332 9333 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9334 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9335 WEXT_PNO_SCAN_INTERVAL); 9336 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9337 9338 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9339 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9340 WEXT_PNO_REPEAT); 9341 bp += WEXT_PNO_REPEAT_LENGTH; 9342 9343 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9344 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9345 WEXT_PNO_MAX_REPEAT); 9346 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9347 9348 memset(&ifr, 0, sizeof(ifr)); 9349 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9350 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9351 9352 priv_cmd.buf = buf; 9353 priv_cmd.used_len = bp; 9354 priv_cmd.total_len = bp; 9355 ifr.ifr_data = &priv_cmd; 9356 9357 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9358 9359 if (ret < 0) { 9360 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9361 ret); 9362 wpa_driver_send_hang_msg(drv); 9363 return ret; 9364 } 9365 9366 drv_errors = 0; 9367 9368 return android_priv_cmd(bss, "PNOFORCE 1"); 9369} 9370 9371 9372static int android_pno_stop(struct i802_bss *bss) 9373{ 9374 return android_priv_cmd(bss, "PNOFORCE 0"); 9375} 9376 9377#endif /* ANDROID */ 9378 9379 9380static int driver_nl80211_set_key(const char *ifname, void *priv, 9381 enum wpa_alg alg, const u8 *addr, 9382 int key_idx, int set_tx, 9383 const u8 *seq, size_t seq_len, 9384 const u8 *key, size_t key_len) 9385{ 9386 struct i802_bss *bss = priv; 9387 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx, 9388 set_tx, seq, seq_len, key, key_len); 9389} 9390 9391 9392static int driver_nl80211_scan2(void *priv, 9393 struct wpa_driver_scan_params *params) 9394{ 9395 struct i802_bss *bss = priv; 9396 return wpa_driver_nl80211_scan(bss, params); 9397} 9398 9399 9400static int driver_nl80211_deauthenticate(void *priv, const u8 *addr, 9401 int reason_code) 9402{ 9403 struct i802_bss *bss = priv; 9404 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code); 9405} 9406 9407 9408static int driver_nl80211_authenticate(void *priv, 9409 struct wpa_driver_auth_params *params) 9410{ 9411 struct i802_bss *bss = priv; 9412 return wpa_driver_nl80211_authenticate(bss, params); 9413} 9414 9415 9416static void driver_nl80211_deinit(void *priv) 9417{ 9418 struct i802_bss *bss = priv; 9419 wpa_driver_nl80211_deinit(bss); 9420} 9421 9422 9423static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, 9424 const char *ifname) 9425{ 9426 struct i802_bss *bss = priv; 9427 return wpa_driver_nl80211_if_remove(bss, type, ifname); 9428} 9429 9430 9431static int driver_nl80211_send_mlme(void *priv, const u8 *data, 9432 size_t data_len, int noack) 9433{ 9434 struct i802_bss *bss = priv; 9435 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack, 9436 0, 0, 0, 0); 9437} 9438 9439 9440static int driver_nl80211_sta_remove(void *priv, const u8 *addr) 9441{ 9442 struct i802_bss *bss = priv; 9443 return wpa_driver_nl80211_sta_remove(bss, addr); 9444} 9445 9446 9447#if defined(HOSTAPD) || defined(CONFIG_AP) 9448static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr, 9449 const char *ifname, int vlan_id) 9450{ 9451 struct i802_bss *bss = priv; 9452 return i802_set_sta_vlan(bss, addr, ifname, vlan_id); 9453} 9454#endif /* HOSTAPD || CONFIG_AP */ 9455 9456 9457static int driver_nl80211_read_sta_data(void *priv, 9458 struct hostap_sta_driver_data *data, 9459 const u8 *addr) 9460{ 9461 struct i802_bss *bss = priv; 9462 return i802_read_sta_data(bss, data, addr); 9463} 9464 9465 9466static int driver_nl80211_send_action(void *priv, unsigned int freq, 9467 unsigned int wait_time, 9468 const u8 *dst, const u8 *src, 9469 const u8 *bssid, 9470 const u8 *data, size_t data_len, 9471 int no_cck) 9472{ 9473 struct i802_bss *bss = priv; 9474 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src, 9475 bssid, data, data_len, no_cck); 9476} 9477 9478 9479static int driver_nl80211_probe_req_report(void *priv, int report) 9480{ 9481 struct i802_bss *bss = priv; 9482 return wpa_driver_nl80211_probe_req_report(bss, report); 9483} 9484 9485 9486const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9487 .name = "nl80211", 9488 .desc = "Linux nl80211/cfg80211", 9489 .get_bssid = wpa_driver_nl80211_get_bssid, 9490 .get_ssid = wpa_driver_nl80211_get_ssid, 9491 .set_key = driver_nl80211_set_key, 9492 .scan2 = driver_nl80211_scan2, 9493 .sched_scan = wpa_driver_nl80211_sched_scan, 9494 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9495 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9496 .deauthenticate = driver_nl80211_deauthenticate, 9497 .authenticate = driver_nl80211_authenticate, 9498 .associate = wpa_driver_nl80211_associate, 9499 .global_init = nl80211_global_init, 9500 .global_deinit = nl80211_global_deinit, 9501 .init2 = wpa_driver_nl80211_init, 9502 .deinit = driver_nl80211_deinit, 9503 .get_capa = wpa_driver_nl80211_get_capa, 9504 .set_operstate = wpa_driver_nl80211_set_operstate, 9505 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9506 .set_country = wpa_driver_nl80211_set_country, 9507 .set_ap = wpa_driver_nl80211_set_ap, 9508 .if_add = wpa_driver_nl80211_if_add, 9509 .if_remove = driver_nl80211_if_remove, 9510 .send_mlme = driver_nl80211_send_mlme, 9511 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9512 .sta_add = wpa_driver_nl80211_sta_add, 9513 .sta_remove = driver_nl80211_sta_remove, 9514 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9515 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9516#ifdef HOSTAPD 9517 .hapd_init = i802_init, 9518 .hapd_deinit = i802_deinit, 9519 .set_wds_sta = i802_set_wds_sta, 9520#endif /* HOSTAPD */ 9521#if defined(HOSTAPD) || defined(CONFIG_AP) 9522 .get_seqnum = i802_get_seqnum, 9523 .flush = i802_flush, 9524 .get_inact_sec = i802_get_inact_sec, 9525 .sta_clear_stats = i802_sta_clear_stats, 9526 .set_rts = i802_set_rts, 9527 .set_frag = i802_set_frag, 9528 .set_tx_queue_params = i802_set_tx_queue_params, 9529 .set_sta_vlan = driver_nl80211_set_sta_vlan, 9530 .sta_deauth = i802_sta_deauth, 9531 .sta_disassoc = i802_sta_disassoc, 9532#endif /* HOSTAPD || CONFIG_AP */ 9533 .read_sta_data = driver_nl80211_read_sta_data, 9534 .set_freq = i802_set_freq, 9535 .send_action = driver_nl80211_send_action, 9536 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9537 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9538 .cancel_remain_on_channel = 9539 wpa_driver_nl80211_cancel_remain_on_channel, 9540 .probe_req_report = driver_nl80211_probe_req_report, 9541 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9542 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9543 .resume = wpa_driver_nl80211_resume, 9544 .send_ft_action = nl80211_send_ft_action, 9545 .signal_monitor = nl80211_signal_monitor, 9546 .signal_poll = nl80211_signal_poll, 9547 .send_frame = nl80211_send_frame, 9548 .shared_freq = wpa_driver_nl80211_shared_freq, 9549 .set_param = nl80211_set_param, 9550 .get_radio_name = nl80211_get_radio_name, 9551 .add_pmkid = nl80211_add_pmkid, 9552 .remove_pmkid = nl80211_remove_pmkid, 9553 .flush_pmkid = nl80211_flush_pmkid, 9554 .set_rekey_info = nl80211_set_rekey_info, 9555 .poll_client = nl80211_poll_client, 9556 .set_p2p_powersave = nl80211_set_p2p_powersave, 9557#ifdef CONFIG_TDLS 9558 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9559 .tdls_oper = nl80211_tdls_oper, 9560#endif /* CONFIG_TDLS */ 9561#ifdef ANDROID_P2P 9562 .set_noa = wpa_driver_set_p2p_noa, 9563 .get_noa = wpa_driver_get_p2p_noa, 9564 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9565#endif 9566#ifdef ANDROID 9567 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9568#endif 9569}; 9570