driver_nl80211.c revision 0ccb66edb8d2a0a397320ace3ec2a03fb0d00d5f
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 mlme_event_ft_event(struct wpa_driver_nl80211_data *drv, 1646 struct nlattr *tb[]) 1647{ 1648 union wpa_event_data data; 1649 1650 os_memset(&data, 0, sizeof(data)); 1651 1652 if (tb[NL80211_ATTR_IE]) { 1653 data.ft_ies.ies = nla_data(tb[NL80211_ATTR_IE]); 1654 data.ft_ies.ies_len = nla_len(tb[NL80211_ATTR_IE]); 1655 } 1656 1657 if (tb[NL80211_ATTR_IE_RIC]) { 1658 data.ft_ies.ric_ies = nla_data(tb[NL80211_ATTR_IE_RIC]); 1659 data.ft_ies.ric_ies_len = nla_len(tb[NL80211_ATTR_IE_RIC]); 1660 } 1661 1662 if (tb[NL80211_ATTR_MAC]) 1663 os_memcpy(data.ft_ies.target_ap, 1664 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1665 1666 wpa_printf(MSG_DEBUG, "nl80211: FT event target_ap " MACSTR, 1667 MAC2STR(data.ft_ies.target_ap)); 1668 1669 wpa_supplicant_event(drv->ctx, EVENT_FT_RESPONSE, &data); 1670} 1671 1672 1673static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1674 struct nlattr *tb[]) 1675{ 1676 union wpa_event_data event; 1677 struct nlattr *nl; 1678 int rem; 1679 struct scan_info *info; 1680#define MAX_REPORT_FREQS 50 1681 int freqs[MAX_REPORT_FREQS]; 1682 int num_freqs = 0; 1683 1684 if (drv->scan_for_auth) { 1685 drv->scan_for_auth = 0; 1686 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1687 "cfg80211 BSS entry"); 1688 wpa_driver_nl80211_authenticate_retry(drv); 1689 return; 1690 } 1691 1692 os_memset(&event, 0, sizeof(event)); 1693 info = &event.scan_info; 1694 info->aborted = aborted; 1695 1696 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1697 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1698 struct wpa_driver_scan_ssid *s = 1699 &info->ssids[info->num_ssids]; 1700 s->ssid = nla_data(nl); 1701 s->ssid_len = nla_len(nl); 1702 info->num_ssids++; 1703 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1704 break; 1705 } 1706 } 1707 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1708 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1709 { 1710 freqs[num_freqs] = nla_get_u32(nl); 1711 num_freqs++; 1712 if (num_freqs == MAX_REPORT_FREQS - 1) 1713 break; 1714 } 1715 info->freqs = freqs; 1716 info->num_freqs = num_freqs; 1717 } 1718 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1719} 1720 1721 1722static int get_link_signal(struct nl_msg *msg, void *arg) 1723{ 1724 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1725 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1726 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1727 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1728 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1729 }; 1730 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1731 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1732 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1733 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1734 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1735 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1736 }; 1737 struct wpa_signal_info *sig_change = arg; 1738 1739 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1740 genlmsg_attrlen(gnlh, 0), NULL); 1741 if (!tb[NL80211_ATTR_STA_INFO] || 1742 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1743 tb[NL80211_ATTR_STA_INFO], policy)) 1744 return NL_SKIP; 1745 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1746 return NL_SKIP; 1747 1748 sig_change->current_signal = 1749 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1750 1751 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1752 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1753 sinfo[NL80211_STA_INFO_TX_BITRATE], 1754 rate_policy)) { 1755 sig_change->current_txrate = 0; 1756 } else { 1757 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1758 sig_change->current_txrate = 1759 nla_get_u16(rinfo[ 1760 NL80211_RATE_INFO_BITRATE]) * 100; 1761 } 1762 } 1763 } 1764 1765 return NL_SKIP; 1766} 1767 1768 1769static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1770 struct wpa_signal_info *sig) 1771{ 1772 struct nl_msg *msg; 1773 1774 sig->current_signal = -9999; 1775 sig->current_txrate = 0; 1776 1777 msg = nlmsg_alloc(); 1778 if (!msg) 1779 return -ENOMEM; 1780 1781 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 1782 1783 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1784 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1785 1786 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1787 nla_put_failure: 1788 nlmsg_free(msg); 1789 return -ENOBUFS; 1790} 1791 1792 1793static int get_link_noise(struct nl_msg *msg, void *arg) 1794{ 1795 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1796 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1797 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1798 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1799 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1800 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1801 }; 1802 struct wpa_signal_info *sig_change = arg; 1803 1804 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1805 genlmsg_attrlen(gnlh, 0), NULL); 1806 1807 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1808 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1809 return NL_SKIP; 1810 } 1811 1812 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1813 tb[NL80211_ATTR_SURVEY_INFO], 1814 survey_policy)) { 1815 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1816 "attributes!"); 1817 return NL_SKIP; 1818 } 1819 1820 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1821 return NL_SKIP; 1822 1823 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1824 sig_change->frequency) 1825 return NL_SKIP; 1826 1827 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1828 return NL_SKIP; 1829 1830 sig_change->current_noise = 1831 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1832 1833 return NL_SKIP; 1834} 1835 1836 1837static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1838 struct wpa_signal_info *sig_change) 1839{ 1840 struct nl_msg *msg; 1841 1842 sig_change->current_noise = 9999; 1843 sig_change->frequency = drv->assoc_freq; 1844 1845 msg = nlmsg_alloc(); 1846 if (!msg) 1847 return -ENOMEM; 1848 1849 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1850 1851 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1852 1853 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1854 nla_put_failure: 1855 nlmsg_free(msg); 1856 return -ENOBUFS; 1857} 1858 1859 1860static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 1861{ 1862 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1863 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1864 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1865 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1866 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1867 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1868 }; 1869 struct wpa_scan_results *scan_results = arg; 1870 struct wpa_scan_res *scan_res; 1871 size_t i; 1872 1873 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1874 genlmsg_attrlen(gnlh, 0), NULL); 1875 1876 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1877 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 1878 return NL_SKIP; 1879 } 1880 1881 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1882 tb[NL80211_ATTR_SURVEY_INFO], 1883 survey_policy)) { 1884 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 1885 "attributes"); 1886 return NL_SKIP; 1887 } 1888 1889 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1890 return NL_SKIP; 1891 1892 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1893 return NL_SKIP; 1894 1895 for (i = 0; i < scan_results->num; ++i) { 1896 scan_res = scan_results->res[i]; 1897 if (!scan_res) 1898 continue; 1899 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1900 scan_res->freq) 1901 continue; 1902 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 1903 continue; 1904 scan_res->noise = (s8) 1905 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1906 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 1907 } 1908 1909 return NL_SKIP; 1910} 1911 1912 1913static int nl80211_get_noise_for_scan_results( 1914 struct wpa_driver_nl80211_data *drv, 1915 struct wpa_scan_results *scan_res) 1916{ 1917 struct nl_msg *msg; 1918 1919 msg = nlmsg_alloc(); 1920 if (!msg) 1921 return -ENOMEM; 1922 1923 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1924 1925 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1926 1927 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 1928 scan_res); 1929 nla_put_failure: 1930 nlmsg_free(msg); 1931 return -ENOBUFS; 1932} 1933 1934 1935static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1936 struct nlattr *tb[]) 1937{ 1938 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1939 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1940 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1941 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1942 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1943 }; 1944 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1945 enum nl80211_cqm_rssi_threshold_event event; 1946 union wpa_event_data ed; 1947 struct wpa_signal_info sig; 1948 int res; 1949 1950 if (tb[NL80211_ATTR_CQM] == NULL || 1951 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1952 cqm_policy)) { 1953 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1954 return; 1955 } 1956 1957 os_memset(&ed, 0, sizeof(ed)); 1958 1959 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1960 if (!tb[NL80211_ATTR_MAC]) 1961 return; 1962 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1963 ETH_ALEN); 1964 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1965 return; 1966 } 1967 1968 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1969 return; 1970 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1971 1972 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1973 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1974 "event: RSSI high"); 1975 ed.signal_change.above_threshold = 1; 1976 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1977 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1978 "event: RSSI low"); 1979 ed.signal_change.above_threshold = 0; 1980 } else 1981 return; 1982 1983 res = nl80211_get_link_signal(drv, &sig); 1984 if (res == 0) { 1985 ed.signal_change.current_signal = sig.current_signal; 1986 ed.signal_change.current_txrate = sig.current_txrate; 1987 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 1988 sig.current_signal, sig.current_txrate); 1989 } 1990 1991 res = nl80211_get_link_noise(drv, &sig); 1992 if (res == 0) { 1993 ed.signal_change.current_noise = sig.current_noise; 1994 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 1995 sig.current_noise); 1996 } 1997 1998 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 1999} 2000 2001 2002static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 2003 struct nlattr **tb) 2004{ 2005 u8 *addr; 2006 union wpa_event_data data; 2007 2008 if (tb[NL80211_ATTR_MAC] == NULL) 2009 return; 2010 addr = nla_data(tb[NL80211_ATTR_MAC]); 2011 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 2012 2013 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2014 u8 *ies = NULL; 2015 size_t ies_len = 0; 2016 if (tb[NL80211_ATTR_IE]) { 2017 ies = nla_data(tb[NL80211_ATTR_IE]); 2018 ies_len = nla_len(tb[NL80211_ATTR_IE]); 2019 } 2020 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 2021 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 2022 return; 2023 } 2024 2025 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2026 return; 2027 2028 os_memset(&data, 0, sizeof(data)); 2029 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 2030 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 2031} 2032 2033 2034static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 2035 struct nlattr **tb) 2036{ 2037 u8 *addr; 2038 union wpa_event_data data; 2039 2040 if (tb[NL80211_ATTR_MAC] == NULL) 2041 return; 2042 addr = nla_data(tb[NL80211_ATTR_MAC]); 2043 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 2044 MAC2STR(addr)); 2045 2046 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2047 drv_event_disassoc(drv->ctx, addr); 2048 return; 2049 } 2050 2051 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2052 return; 2053 2054 os_memset(&data, 0, sizeof(data)); 2055 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 2056 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 2057} 2058 2059 2060static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 2061 struct nlattr **tb) 2062{ 2063 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 2064 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 2065 [NL80211_REKEY_DATA_KEK] = { 2066 .minlen = NL80211_KEK_LEN, 2067 .maxlen = NL80211_KEK_LEN, 2068 }, 2069 [NL80211_REKEY_DATA_KCK] = { 2070 .minlen = NL80211_KCK_LEN, 2071 .maxlen = NL80211_KCK_LEN, 2072 }, 2073 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2074 .minlen = NL80211_REPLAY_CTR_LEN, 2075 .maxlen = NL80211_REPLAY_CTR_LEN, 2076 }, 2077 }; 2078 union wpa_event_data data; 2079 2080 if (!tb[NL80211_ATTR_MAC]) 2081 return; 2082 if (!tb[NL80211_ATTR_REKEY_DATA]) 2083 return; 2084 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2085 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2086 return; 2087 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2088 return; 2089 2090 os_memset(&data, 0, sizeof(data)); 2091 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2092 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2093 MAC2STR(data.driver_gtk_rekey.bssid)); 2094 data.driver_gtk_rekey.replay_ctr = 2095 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2096 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2097 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2098 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2099} 2100 2101 2102static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2103 struct nlattr **tb) 2104{ 2105 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2106 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2107 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2108 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2109 .minlen = ETH_ALEN, 2110 .maxlen = ETH_ALEN, 2111 }, 2112 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2113 }; 2114 union wpa_event_data data; 2115 2116 wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event"); 2117 2118 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2119 return; 2120 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2121 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2122 return; 2123 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2124 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2125 return; 2126 2127 os_memset(&data, 0, sizeof(data)); 2128 os_memcpy(data.pmkid_candidate.bssid, 2129 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2130 data.pmkid_candidate.index = 2131 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2132 data.pmkid_candidate.preauth = 2133 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2134 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2135} 2136 2137 2138static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2139 struct nlattr **tb) 2140{ 2141 union wpa_event_data data; 2142 2143 wpa_printf(MSG_DEBUG, "nl80211: Probe client event"); 2144 2145 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2146 return; 2147 2148 os_memset(&data, 0, sizeof(data)); 2149 os_memcpy(data.client_poll.addr, 2150 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2151 2152 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2153} 2154 2155 2156static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv, 2157 struct nlattr **tb) 2158{ 2159 union wpa_event_data data; 2160 2161 wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event"); 2162 2163 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION]) 2164 return; 2165 2166 os_memset(&data, 0, sizeof(data)); 2167 os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2168 switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) { 2169 case NL80211_TDLS_SETUP: 2170 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer " 2171 MACSTR, MAC2STR(data.tdls.peer)); 2172 data.tdls.oper = TDLS_REQUEST_SETUP; 2173 break; 2174 case NL80211_TDLS_TEARDOWN: 2175 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer " 2176 MACSTR, MAC2STR(data.tdls.peer)); 2177 data.tdls.oper = TDLS_REQUEST_TEARDOWN; 2178 break; 2179 default: 2180 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione " 2181 "event"); 2182 return; 2183 } 2184 if (tb[NL80211_ATTR_REASON_CODE]) { 2185 data.tdls.reason_code = 2186 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]); 2187 } 2188 2189 wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data); 2190} 2191 2192 2193static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv, 2194 struct nlattr **tb) 2195{ 2196 union wpa_event_data data; 2197 u32 reason; 2198 2199 wpa_printf(MSG_DEBUG, "nl80211: Connect failed event"); 2200 2201 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON]) 2202 return; 2203 2204 os_memset(&data, 0, sizeof(data)); 2205 os_memcpy(data.connect_failed_reason.addr, 2206 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2207 2208 reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]); 2209 switch (reason) { 2210 case NL80211_CONN_FAIL_MAX_CLIENTS: 2211 wpa_printf(MSG_DEBUG, "nl80211: Max client reached"); 2212 data.connect_failed_reason.code = MAX_CLIENT_REACHED; 2213 break; 2214 case NL80211_CONN_FAIL_BLOCKED_CLIENT: 2215 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR 2216 " tried to connect", 2217 MAC2STR(data.connect_failed_reason.addr)); 2218 data.connect_failed_reason.code = BLOCKED_CLIENT; 2219 break; 2220 default: 2221 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason " 2222 "%u", reason); 2223 return; 2224 } 2225 2226 wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data); 2227} 2228 2229 2230static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2231 int wds) 2232{ 2233 struct wpa_driver_nl80211_data *drv = bss->drv; 2234 union wpa_event_data event; 2235 2236 if (!tb[NL80211_ATTR_MAC]) 2237 return; 2238 2239 os_memset(&event, 0, sizeof(event)); 2240 event.rx_from_unknown.bssid = bss->addr; 2241 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2242 event.rx_from_unknown.wds = wds; 2243 2244 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2245} 2246 2247 2248static void do_process_drv_event(struct i802_bss *bss, int cmd, 2249 struct nlattr **tb) 2250{ 2251 struct wpa_driver_nl80211_data *drv = bss->drv; 2252 2253 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2254 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2255 cmd == NL80211_CMD_SCAN_ABORTED)) { 2256 wpa_driver_nl80211_set_mode(&drv->first_bss, 2257 drv->ap_scan_as_station); 2258 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2259 } 2260 2261 switch (cmd) { 2262 case NL80211_CMD_TRIGGER_SCAN: 2263 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan trigger"); 2264 break; 2265 case NL80211_CMD_START_SCHED_SCAN: 2266 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan started"); 2267 break; 2268 case NL80211_CMD_SCHED_SCAN_STOPPED: 2269 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan stopped"); 2270 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2271 break; 2272 case NL80211_CMD_NEW_SCAN_RESULTS: 2273 wpa_dbg(drv->ctx, MSG_DEBUG, 2274 "nl80211: New scan results available"); 2275 drv->scan_complete_events = 1; 2276 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2277 drv->ctx); 2278 send_scan_event(drv, 0, tb); 2279 break; 2280 case NL80211_CMD_SCHED_SCAN_RESULTS: 2281 wpa_dbg(drv->ctx, MSG_DEBUG, 2282 "nl80211: New sched scan results available"); 2283 send_scan_event(drv, 0, tb); 2284 break; 2285 case NL80211_CMD_SCAN_ABORTED: 2286 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan aborted"); 2287 /* 2288 * Need to indicate that scan results are available in order 2289 * not to make wpa_supplicant stop its scanning. 2290 */ 2291 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2292 drv->ctx); 2293 send_scan_event(drv, 1, tb); 2294 break; 2295 case NL80211_CMD_AUTHENTICATE: 2296 case NL80211_CMD_ASSOCIATE: 2297 case NL80211_CMD_DEAUTHENTICATE: 2298 case NL80211_CMD_DISASSOCIATE: 2299 case NL80211_CMD_FRAME_TX_STATUS: 2300 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2301 case NL80211_CMD_UNPROT_DISASSOCIATE: 2302 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME], 2303 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2304 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2305 tb[NL80211_ATTR_COOKIE], 2306 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2307 break; 2308 case NL80211_CMD_CONNECT: 2309 case NL80211_CMD_ROAM: 2310 mlme_event_connect(drv, cmd, 2311 tb[NL80211_ATTR_STATUS_CODE], 2312 tb[NL80211_ATTR_MAC], 2313 tb[NL80211_ATTR_REQ_IE], 2314 tb[NL80211_ATTR_RESP_IE]); 2315 break; 2316 case NL80211_CMD_CH_SWITCH_NOTIFY: 2317 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], 2318 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2319 break; 2320 case NL80211_CMD_DISCONNECT: 2321 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2322 tb[NL80211_ATTR_MAC], 2323 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2324 break; 2325 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2326 mlme_event_michael_mic_failure(bss, tb); 2327 break; 2328 case NL80211_CMD_JOIN_IBSS: 2329 mlme_event_join_ibss(drv, tb); 2330 break; 2331 case NL80211_CMD_REMAIN_ON_CHANNEL: 2332 mlme_event_remain_on_channel(drv, 0, tb); 2333 break; 2334 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2335 mlme_event_remain_on_channel(drv, 1, tb); 2336 break; 2337 case NL80211_CMD_NOTIFY_CQM: 2338 nl80211_cqm_event(drv, tb); 2339 break; 2340 case NL80211_CMD_REG_CHANGE: 2341 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2342 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2343 NULL); 2344 break; 2345 case NL80211_CMD_REG_BEACON_HINT: 2346 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2347 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2348 NULL); 2349 break; 2350 case NL80211_CMD_NEW_STATION: 2351 nl80211_new_station_event(drv, tb); 2352 break; 2353 case NL80211_CMD_DEL_STATION: 2354 nl80211_del_station_event(drv, tb); 2355 break; 2356 case NL80211_CMD_SET_REKEY_OFFLOAD: 2357 nl80211_rekey_offload_event(drv, tb); 2358 break; 2359 case NL80211_CMD_PMKSA_CANDIDATE: 2360 nl80211_pmksa_candidate_event(drv, tb); 2361 break; 2362 case NL80211_CMD_PROBE_CLIENT: 2363 nl80211_client_probe_event(drv, tb); 2364 break; 2365 case NL80211_CMD_TDLS_OPER: 2366 nl80211_tdls_oper_event(drv, tb); 2367 break; 2368 case NL80211_CMD_CONN_FAILED: 2369 nl80211_connect_failed_event(drv, tb); 2370 break; 2371 case NL80211_CMD_FT_EVENT: 2372 mlme_event_ft_event(drv, tb); 2373 break; 2374 default: 2375 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event " 2376 "(cmd=%d)", cmd); 2377 break; 2378 } 2379} 2380 2381 2382static int process_drv_event(struct nl_msg *msg, void *arg) 2383{ 2384 struct wpa_driver_nl80211_data *drv = arg; 2385 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2386 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2387 struct i802_bss *bss; 2388 int ifidx = -1; 2389 2390 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2391 genlmsg_attrlen(gnlh, 0), NULL); 2392 2393 if (tb[NL80211_ATTR_IFINDEX]) 2394 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2395 2396 for (bss = &drv->first_bss; bss; bss = bss->next) { 2397 if (ifidx == -1 || ifidx == bss->ifindex) { 2398 do_process_drv_event(bss, gnlh->cmd, tb); 2399 return NL_SKIP; 2400 } 2401 } 2402 2403 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d) for foreign " 2404 "interface (ifindex %d)", gnlh->cmd, ifidx); 2405 2406 return NL_SKIP; 2407} 2408 2409 2410static int process_global_event(struct nl_msg *msg, void *arg) 2411{ 2412 struct nl80211_global *global = arg; 2413 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2414 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2415 struct wpa_driver_nl80211_data *drv, *tmp; 2416 int ifidx = -1; 2417 struct i802_bss *bss; 2418 2419 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2420 genlmsg_attrlen(gnlh, 0), NULL); 2421 2422 if (tb[NL80211_ATTR_IFINDEX]) 2423 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2424 2425 dl_list_for_each_safe(drv, tmp, &global->interfaces, 2426 struct wpa_driver_nl80211_data, list) { 2427 for (bss = &drv->first_bss; bss; bss = bss->next) { 2428 if (ifidx == -1 || ifidx == bss->ifindex) { 2429 do_process_drv_event(bss, gnlh->cmd, tb); 2430 return NL_SKIP; 2431 } 2432 } 2433 } 2434 2435 return NL_SKIP; 2436} 2437 2438 2439static int process_bss_event(struct nl_msg *msg, void *arg) 2440{ 2441 struct i802_bss *bss = arg; 2442 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2443 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2444 2445 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2446 genlmsg_attrlen(gnlh, 0), NULL); 2447 2448 switch (gnlh->cmd) { 2449 case NL80211_CMD_FRAME: 2450 case NL80211_CMD_FRAME_TX_STATUS: 2451 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2452 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2453 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2454 tb[NL80211_ATTR_COOKIE], 2455 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2456 break; 2457 case NL80211_CMD_UNEXPECTED_FRAME: 2458 nl80211_spurious_frame(bss, tb, 0); 2459 break; 2460 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2461 nl80211_spurious_frame(bss, tb, 1); 2462 break; 2463 default: 2464 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2465 "(cmd=%d)", gnlh->cmd); 2466 break; 2467 } 2468 2469 return NL_SKIP; 2470} 2471 2472 2473static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2474 void *handle) 2475{ 2476 struct nl_cb *cb = eloop_ctx; 2477 2478 wpa_printf(MSG_DEBUG, "nl80211: Event message available"); 2479 2480 nl_recvmsgs(handle, cb); 2481} 2482 2483 2484/** 2485 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2486 * @priv: driver_nl80211 private data 2487 * @alpha2_arg: country to which to switch to 2488 * Returns: 0 on success, -1 on failure 2489 * 2490 * This asks nl80211 to set the regulatory domain for given 2491 * country ISO / IEC alpha2. 2492 */ 2493static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2494{ 2495 struct i802_bss *bss = priv; 2496 struct wpa_driver_nl80211_data *drv = bss->drv; 2497 char alpha2[3]; 2498 struct nl_msg *msg; 2499 2500 msg = nlmsg_alloc(); 2501 if (!msg) 2502 return -ENOMEM; 2503 2504 alpha2[0] = alpha2_arg[0]; 2505 alpha2[1] = alpha2_arg[1]; 2506 alpha2[2] = '\0'; 2507 2508 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2509 2510 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2511 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2512 return -EINVAL; 2513 return 0; 2514nla_put_failure: 2515 nlmsg_free(msg); 2516 return -EINVAL; 2517} 2518 2519 2520static int protocol_feature_handler(struct nl_msg *msg, void *arg) 2521{ 2522 u32 *feat = arg; 2523 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 2524 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2525 2526 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2527 genlmsg_attrlen(gnlh, 0), NULL); 2528 2529 if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]) 2530 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]); 2531 2532 return NL_SKIP; 2533} 2534 2535 2536static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv) 2537{ 2538 u32 feat = 0; 2539 struct nl_msg *msg; 2540 2541 msg = nlmsg_alloc(); 2542 if (!msg) 2543 goto nla_put_failure; 2544 2545 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES); 2546 if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0) 2547 return feat; 2548 2549 msg = NULL; 2550nla_put_failure: 2551 nlmsg_free(msg); 2552 return 0; 2553} 2554 2555 2556struct wiphy_info_data { 2557 struct wpa_driver_capa *capa; 2558 2559 unsigned int error:1; 2560 unsigned int device_ap_sme:1; 2561 unsigned int poll_command_supported:1; 2562 unsigned int data_tx_status:1; 2563 unsigned int monitor_supported:1; 2564 unsigned int auth_supported:1; 2565 unsigned int connect_supported:1; 2566 unsigned int p2p_go_supported:1; 2567 unsigned int p2p_client_supported:1; 2568 unsigned int p2p_concurrent:1; 2569 unsigned int p2p_multichan_concurrent:1; 2570}; 2571 2572 2573static unsigned int probe_resp_offload_support(int supp_protocols) 2574{ 2575 unsigned int prot = 0; 2576 2577 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 2578 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 2579 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 2580 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 2581 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 2582 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 2583 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 2584 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 2585 2586 return prot; 2587} 2588 2589 2590static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, 2591 struct nlattr *tb) 2592{ 2593 struct nlattr *nl_mode; 2594 int i; 2595 2596 if (tb == NULL) 2597 return; 2598 2599 nla_for_each_nested(nl_mode, tb, i) { 2600 switch (nla_type(nl_mode)) { 2601 case NL80211_IFTYPE_AP: 2602 info->capa->flags |= WPA_DRIVER_FLAGS_AP; 2603 break; 2604 case NL80211_IFTYPE_ADHOC: 2605 info->capa->flags |= WPA_DRIVER_FLAGS_IBSS; 2606 break; 2607 case NL80211_IFTYPE_P2P_GO: 2608 info->p2p_go_supported = 1; 2609 break; 2610 case NL80211_IFTYPE_P2P_CLIENT: 2611 info->p2p_client_supported = 1; 2612 break; 2613 case NL80211_IFTYPE_MONITOR: 2614 info->monitor_supported = 1; 2615 break; 2616 } 2617 } 2618} 2619 2620 2621static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, 2622 struct nlattr *nl_combi) 2623{ 2624 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 2625 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 2626 struct nlattr *nl_limit, *nl_mode; 2627 int err, rem_limit, rem_mode; 2628 int combination_has_p2p = 0, combination_has_mgd = 0; 2629 static struct nla_policy 2630 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 2631 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 2632 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 2633 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 2634 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 2635 }, 2636 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 2637 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 2638 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 2639 }; 2640 2641 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 2642 nl_combi, iface_combination_policy); 2643 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 2644 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 2645 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 2646 return 0; /* broken combination */ 2647 2648 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], 2649 rem_limit) { 2650 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, 2651 nl_limit, iface_limit_policy); 2652 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 2653 return 0; /* broken combination */ 2654 2655 nla_for_each_nested(nl_mode, 2656 tb_limit[NL80211_IFACE_LIMIT_TYPES], 2657 rem_mode) { 2658 int ift = nla_type(nl_mode); 2659 if (ift == NL80211_IFTYPE_P2P_GO || 2660 ift == NL80211_IFTYPE_P2P_CLIENT) 2661 combination_has_p2p = 1; 2662 if (ift == NL80211_IFTYPE_STATION) 2663 combination_has_mgd = 1; 2664 } 2665 if (combination_has_p2p && combination_has_mgd) 2666 break; 2667 } 2668 2669 if (combination_has_p2p && combination_has_mgd) { 2670 info->p2p_concurrent = 1; 2671 if (nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) > 1) 2672 info->p2p_multichan_concurrent = 1; 2673 return 1; 2674 } 2675 2676 return 0; 2677} 2678 2679 2680static void wiphy_info_iface_comb(struct wiphy_info_data *info, 2681 struct nlattr *tb) 2682{ 2683 struct nlattr *nl_combi; 2684 int rem_combi; 2685 2686 if (tb == NULL) 2687 return; 2688 2689 nla_for_each_nested(nl_combi, tb, rem_combi) { 2690 if (wiphy_info_iface_comb_process(info, nl_combi) > 0) 2691 break; 2692 } 2693} 2694 2695 2696static void wiphy_info_supp_cmds(struct wiphy_info_data *info, 2697 struct nlattr *tb) 2698{ 2699 struct nlattr *nl_cmd; 2700 int i; 2701 2702 if (tb == NULL) 2703 return; 2704 2705 nla_for_each_nested(nl_cmd, tb, i) { 2706 switch (nla_get_u32(nl_cmd)) { 2707 case NL80211_CMD_AUTHENTICATE: 2708 info->auth_supported = 1; 2709 break; 2710 case NL80211_CMD_CONNECT: 2711 info->connect_supported = 1; 2712 break; 2713 case NL80211_CMD_START_SCHED_SCAN: 2714 info->capa->sched_scan_supported = 1; 2715 break; 2716 case NL80211_CMD_PROBE_CLIENT: 2717 info->poll_command_supported = 1; 2718 break; 2719 } 2720 } 2721} 2722 2723 2724static void wiphy_info_max_roc(struct wpa_driver_capa *capa, 2725 struct nlattr *tb) 2726{ 2727 /* default to 5000 since early versions of mac80211 don't set it */ 2728 capa->max_remain_on_chan = 5000; 2729 2730 if (tb) 2731 capa->max_remain_on_chan = nla_get_u32(tb); 2732} 2733 2734 2735static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, 2736 struct nlattr *ext_setup) 2737{ 2738 if (tdls == NULL) 2739 return; 2740 2741 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 2742 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 2743 2744 if (ext_setup) { 2745 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 2746 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 2747 } 2748} 2749 2750 2751static void wiphy_info_feature_flags(struct wiphy_info_data *info, 2752 struct nlattr *tb) 2753{ 2754 u32 flags; 2755 struct wpa_driver_capa *capa = info->capa; 2756 2757 if (tb == NULL) 2758 return; 2759 2760 flags = nla_get_u32(tb); 2761 2762 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2763 info->data_tx_status = 1; 2764 2765 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 2766 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 2767 2768 if (flags & NL80211_FEATURE_SAE) 2769 capa->flags |= WPA_DRIVER_FLAGS_SAE; 2770 2771 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 2772 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 2773} 2774 2775 2776static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, 2777 struct nlattr *tb) 2778{ 2779 u32 protocols; 2780 2781 if (tb == NULL) 2782 return; 2783 2784 protocols = nla_get_u32(tb); 2785 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " 2786 "mode"); 2787 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2788 capa->probe_resp_offloads = probe_resp_offload_support(protocols); 2789} 2790 2791 2792static int wiphy_info_handler(struct nl_msg *msg, void *arg) 2793{ 2794 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2795 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2796 struct wiphy_info_data *info = arg; 2797 struct wpa_driver_capa *capa = info->capa; 2798 2799 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2800 genlmsg_attrlen(gnlh, 0), NULL); 2801 2802 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 2803 capa->max_scan_ssids = 2804 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 2805 2806 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 2807 capa->max_sched_scan_ssids = 2808 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 2809 2810 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 2811 capa->max_match_sets = 2812 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 2813 2814 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); 2815 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); 2816 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); 2817 2818 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 2819 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 2820 "off-channel TX"); 2821 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 2822 } 2823 2824 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 2825 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 2826 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 2827 } 2828 2829 wiphy_info_max_roc(capa, 2830 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 2831 2832 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 2833 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 2834 2835 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], 2836 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); 2837 2838 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2839 info->device_ap_sme = 1; 2840 2841 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); 2842 wiphy_info_probe_resp_offload(capa, 2843 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2844 2845 return NL_SKIP; 2846} 2847 2848 2849static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2850 struct wiphy_info_data *info) 2851{ 2852 u32 feat; 2853 struct nl_msg *msg; 2854 2855 os_memset(info, 0, sizeof(*info)); 2856 info->capa = &drv->capa; 2857 2858 msg = nlmsg_alloc(); 2859 if (!msg) 2860 return -1; 2861 2862 feat = get_nl80211_protocol_features(drv); 2863 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 2864 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 2865 else 2866 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2867 2868 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 2869 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2870 2871 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 2872 return -1; 2873 2874 if (info->auth_supported) 2875 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 2876 else if (!info->connect_supported) { 2877 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 2878 "authentication/association or connect commands"); 2879 info->error = 1; 2880 } 2881 2882 if (info->p2p_go_supported && info->p2p_client_supported) 2883 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 2884 if (info->p2p_concurrent) { 2885 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 2886 "interface (driver advertised support)"); 2887 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 2888 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 2889 } 2890 if (info->p2p_multichan_concurrent) { 2891 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 2892 "concurrent (driver advertised support)"); 2893 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 2894 } 2895 return 0; 2896nla_put_failure: 2897 nlmsg_free(msg); 2898 return -1; 2899} 2900 2901 2902static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2903{ 2904 struct wiphy_info_data info; 2905 if (wpa_driver_nl80211_get_info(drv, &info)) 2906 return -1; 2907 2908 if (info.error) 2909 return -1; 2910 2911 drv->has_capability = 1; 2912 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2913 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2914 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2915 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2916 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2917 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2918 WPA_DRIVER_CAPA_ENC_WEP104 | 2919 WPA_DRIVER_CAPA_ENC_TKIP | 2920 WPA_DRIVER_CAPA_ENC_CCMP; 2921 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2922 WPA_DRIVER_AUTH_SHARED | 2923 WPA_DRIVER_AUTH_LEAP; 2924 2925 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2926 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2927 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2928 2929 if (!info.device_ap_sme) { 2930 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2931 2932 /* 2933 * No AP SME is currently assumed to also indicate no AP MLME 2934 * in the driver/firmware. 2935 */ 2936 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 2937 } 2938 2939 drv->device_ap_sme = info.device_ap_sme; 2940 drv->poll_command_supported = info.poll_command_supported; 2941 drv->data_tx_status = info.data_tx_status; 2942 2943#ifdef ANDROID_P2P 2944 if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { 2945 /* Driver is new enough to support monitorless mode*/ 2946 wpa_printf(MSG_DEBUG, "nl80211: Driver is new " 2947 "enough to support monitor-less mode"); 2948 drv->use_monitor = 0; 2949 } 2950#else 2951 /* 2952 * If poll command and tx status are supported, mac80211 is new enough 2953 * to have everything we need to not need monitor interfaces. 2954 */ 2955 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 2956#endif 2957 2958 if (drv->device_ap_sme && drv->use_monitor) { 2959 /* 2960 * Non-mac80211 drivers may not support monitor interface. 2961 * Make sure we do not get stuck with incorrect capability here 2962 * by explicitly testing this. 2963 */ 2964 if (!info.monitor_supported) { 2965 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 2966 "with device_ap_sme since no monitor mode " 2967 "support detected"); 2968 drv->use_monitor = 0; 2969 } 2970 } 2971 2972 /* 2973 * If we aren't going to use monitor interfaces, but the 2974 * driver doesn't support data TX status, we won't get TX 2975 * status for EAPOL frames. 2976 */ 2977 if (!drv->use_monitor && !info.data_tx_status) 2978 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2979 2980 return 0; 2981} 2982 2983 2984#ifdef ANDROID 2985static int android_genl_ctrl_resolve(struct nl_handle *handle, 2986 const char *name) 2987{ 2988 /* 2989 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 2990 * need to work around that. 2991 */ 2992 struct nl_cache *cache = NULL; 2993 struct genl_family *nl80211 = NULL; 2994 int id = -1; 2995 2996 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 2997 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 2998 "netlink cache"); 2999 goto fail; 3000 } 3001 3002 nl80211 = genl_ctrl_search_by_name(cache, name); 3003 if (nl80211 == NULL) 3004 goto fail; 3005 3006 id = genl_family_get_id(nl80211); 3007 3008fail: 3009 if (nl80211) 3010 genl_family_put(nl80211); 3011 if (cache) 3012 nl_cache_free(cache); 3013 3014 return id; 3015} 3016#define genl_ctrl_resolve android_genl_ctrl_resolve 3017#endif /* ANDROID */ 3018 3019 3020static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 3021{ 3022 int ret; 3023 3024 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3025 if (global->nl_cb == NULL) { 3026 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 3027 "callbacks"); 3028 return -1; 3029 } 3030 3031 global->nl = nl_create_handle(global->nl_cb, "nl"); 3032 if (global->nl == NULL) 3033 goto err; 3034 3035 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 3036 if (global->nl80211_id < 0) { 3037 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 3038 "found"); 3039 goto err; 3040 } 3041 3042 global->nl_event = nl_create_handle(global->nl_cb, "event"); 3043 if (global->nl_event == NULL) 3044 goto err; 3045 3046 ret = nl_get_multicast_id(global, "nl80211", "scan"); 3047 if (ret >= 0) 3048 ret = nl_socket_add_membership(global->nl_event, ret); 3049 if (ret < 0) { 3050 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3051 "membership for scan events: %d (%s)", 3052 ret, strerror(-ret)); 3053 goto err; 3054 } 3055 3056 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 3057 if (ret >= 0) 3058 ret = nl_socket_add_membership(global->nl_event, ret); 3059 if (ret < 0) { 3060 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3061 "membership for mlme events: %d (%s)", 3062 ret, strerror(-ret)); 3063 goto err; 3064 } 3065 3066 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 3067 if (ret >= 0) 3068 ret = nl_socket_add_membership(global->nl_event, ret); 3069 if (ret < 0) { 3070 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 3071 "membership for regulatory events: %d (%s)", 3072 ret, strerror(-ret)); 3073 /* Continue without regulatory events */ 3074 } 3075 3076 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3077 no_seq_check, NULL); 3078 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3079 process_global_event, global); 3080 3081 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 3082 wpa_driver_nl80211_event_receive, 3083 global->nl_cb, global->nl_event); 3084 3085 return 0; 3086 3087err: 3088 nl_destroy_handles(&global->nl_event); 3089 nl_destroy_handles(&global->nl); 3090 nl_cb_put(global->nl_cb); 3091 global->nl_cb = NULL; 3092 return -1; 3093} 3094 3095 3096static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 3097{ 3098 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3099 if (!drv->nl_cb) { 3100 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 3101 return -1; 3102 } 3103 3104 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3105 no_seq_check, NULL); 3106 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3107 process_drv_event, drv); 3108 3109 return 0; 3110} 3111 3112 3113static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 3114{ 3115 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 3116 /* 3117 * This may be for any interface; use ifdown event to disable 3118 * interface. 3119 */ 3120} 3121 3122 3123static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 3124{ 3125 struct wpa_driver_nl80211_data *drv = ctx; 3126 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 3127 if (linux_set_iface_flags(drv->global->ioctl_sock, 3128 drv->first_bss.ifname, 1)) { 3129 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 3130 "after rfkill unblock"); 3131 return; 3132 } 3133 /* rtnetlink ifup handler will report interface as enabled */ 3134} 3135 3136 3137static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 3138{ 3139 /* Find phy (radio) to which this interface belongs */ 3140 char buf[90], *pos; 3141 int f, rv; 3142 3143 drv->phyname[0] = '\0'; 3144 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 3145 drv->first_bss.ifname); 3146 f = open(buf, O_RDONLY); 3147 if (f < 0) { 3148 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 3149 buf, strerror(errno)); 3150 return; 3151 } 3152 3153 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 3154 close(f); 3155 if (rv < 0) { 3156 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 3157 buf, strerror(errno)); 3158 return; 3159 } 3160 3161 drv->phyname[rv] = '\0'; 3162 pos = os_strchr(drv->phyname, '\n'); 3163 if (pos) 3164 *pos = '\0'; 3165 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 3166 drv->first_bss.ifname, drv->phyname); 3167} 3168 3169 3170static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 3171 void *eloop_ctx, 3172 void *handle) 3173{ 3174 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3175 u8 data[2048]; 3176 struct msghdr msg; 3177 struct iovec entry; 3178 u8 control[512]; 3179 struct cmsghdr *cmsg; 3180 int res, found_ee = 0, found_wifi = 0, acked = 0; 3181 union wpa_event_data event; 3182 3183 memset(&msg, 0, sizeof(msg)); 3184 msg.msg_iov = &entry; 3185 msg.msg_iovlen = 1; 3186 entry.iov_base = data; 3187 entry.iov_len = sizeof(data); 3188 msg.msg_control = &control; 3189 msg.msg_controllen = sizeof(control); 3190 3191 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 3192 /* if error or not fitting 802.3 header, return */ 3193 if (res < 14) 3194 return; 3195 3196 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 3197 { 3198 if (cmsg->cmsg_level == SOL_SOCKET && 3199 cmsg->cmsg_type == SCM_WIFI_STATUS) { 3200 int *ack; 3201 3202 found_wifi = 1; 3203 ack = (void *)CMSG_DATA(cmsg); 3204 acked = *ack; 3205 } 3206 3207 if (cmsg->cmsg_level == SOL_PACKET && 3208 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 3209 struct sock_extended_err *err = 3210 (struct sock_extended_err *)CMSG_DATA(cmsg); 3211 3212 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 3213 found_ee = 1; 3214 } 3215 } 3216 3217 if (!found_ee || !found_wifi) 3218 return; 3219 3220 memset(&event, 0, sizeof(event)); 3221 event.eapol_tx_status.dst = data; 3222 event.eapol_tx_status.data = data + 14; 3223 event.eapol_tx_status.data_len = res - 14; 3224 event.eapol_tx_status.ack = acked; 3225 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 3226} 3227 3228 3229static int nl80211_init_bss(struct i802_bss *bss) 3230{ 3231 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3232 if (!bss->nl_cb) 3233 return -1; 3234 3235 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3236 no_seq_check, NULL); 3237 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3238 process_bss_event, bss); 3239 3240 return 0; 3241} 3242 3243 3244static void nl80211_destroy_bss(struct i802_bss *bss) 3245{ 3246 nl_cb_put(bss->nl_cb); 3247 bss->nl_cb = NULL; 3248} 3249 3250 3251/** 3252 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 3253 * @ctx: context to be used when calling wpa_supplicant functions, 3254 * e.g., wpa_supplicant_event() 3255 * @ifname: interface name, e.g., wlan0 3256 * @global_priv: private driver global data from global_init() 3257 * Returns: Pointer to private data, %NULL on failure 3258 */ 3259static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 3260 void *global_priv) 3261{ 3262 struct wpa_driver_nl80211_data *drv; 3263 struct rfkill_config *rcfg; 3264 struct i802_bss *bss; 3265 3266 if (global_priv == NULL) 3267 return NULL; 3268 drv = os_zalloc(sizeof(*drv)); 3269 if (drv == NULL) 3270 return NULL; 3271 drv->global = global_priv; 3272 drv->ctx = ctx; 3273 bss = &drv->first_bss; 3274 bss->drv = drv; 3275 bss->ctx = ctx; 3276 3277 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 3278 drv->monitor_ifidx = -1; 3279 drv->monitor_sock = -1; 3280 drv->eapol_tx_sock = -1; 3281 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3282 3283 if (wpa_driver_nl80211_init_nl(drv)) { 3284 os_free(drv); 3285 return NULL; 3286 } 3287 3288 if (nl80211_init_bss(bss)) 3289 goto failed; 3290 3291 nl80211_get_phy_name(drv); 3292 3293 rcfg = os_zalloc(sizeof(*rcfg)); 3294 if (rcfg == NULL) 3295 goto failed; 3296 rcfg->ctx = drv; 3297 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3298 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3299 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3300 drv->rfkill = rfkill_init(rcfg); 3301 if (drv->rfkill == NULL) { 3302 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3303 os_free(rcfg); 3304 } 3305 3306 if (wpa_driver_nl80211_finish_drv_init(drv)) 3307 goto failed; 3308 3309 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3310 if (drv->eapol_tx_sock < 0) 3311 goto failed; 3312 3313 if (drv->data_tx_status) { 3314 int enabled = 1; 3315 3316 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3317 &enabled, sizeof(enabled)) < 0) { 3318 wpa_printf(MSG_DEBUG, 3319 "nl80211: wifi status sockopt failed\n"); 3320 drv->data_tx_status = 0; 3321 if (!drv->use_monitor) 3322 drv->capa.flags &= 3323 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3324 } else { 3325 eloop_register_read_sock(drv->eapol_tx_sock, 3326 wpa_driver_nl80211_handle_eapol_tx_status, 3327 drv, NULL); 3328 } 3329 } 3330 3331 if (drv->global) { 3332 dl_list_add(&drv->global->interfaces, &drv->list); 3333 drv->in_interface_list = 1; 3334 } 3335 3336 return bss; 3337 3338failed: 3339 wpa_driver_nl80211_deinit(bss); 3340 return NULL; 3341} 3342 3343 3344static int nl80211_register_frame(struct i802_bss *bss, 3345 struct nl_handle *nl_handle, 3346 u16 type, const u8 *match, size_t match_len) 3347{ 3348 struct wpa_driver_nl80211_data *drv = bss->drv; 3349 struct nl_msg *msg; 3350 int ret = -1; 3351 3352 msg = nlmsg_alloc(); 3353 if (!msg) 3354 return -1; 3355 3356 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3357 type, nl_handle); 3358 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3359 match, match_len); 3360 3361 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3362 3363 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3364 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3365 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3366 3367 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3368 msg = NULL; 3369 if (ret) { 3370 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3371 "failed (type=%u): ret=%d (%s)", 3372 type, ret, strerror(-ret)); 3373 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3374 match, match_len); 3375 goto nla_put_failure; 3376 } 3377 ret = 0; 3378nla_put_failure: 3379 nlmsg_free(msg); 3380 return ret; 3381} 3382 3383 3384static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3385{ 3386 struct wpa_driver_nl80211_data *drv = bss->drv; 3387 3388 if (bss->nl_mgmt) { 3389 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3390 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3391 return -1; 3392 } 3393 3394 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3395 if (bss->nl_mgmt == NULL) 3396 return -1; 3397 3398 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3399 wpa_driver_nl80211_event_receive, bss->nl_cb, 3400 bss->nl_mgmt); 3401 3402 return 0; 3403} 3404 3405 3406static int nl80211_register_action_frame(struct i802_bss *bss, 3407 const u8 *match, size_t match_len) 3408{ 3409 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3410 return nl80211_register_frame(bss, bss->nl_mgmt, 3411 type, match, match_len); 3412} 3413 3414 3415static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3416{ 3417 struct wpa_driver_nl80211_data *drv = bss->drv; 3418 3419 if (nl80211_alloc_mgmt_handle(bss)) 3420 return -1; 3421 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3422 "handle %p", bss->nl_mgmt); 3423 3424#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3425 /* GAS Initial Request */ 3426 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3427 return -1; 3428 /* GAS Initial Response */ 3429 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3430 return -1; 3431 /* GAS Comeback Request */ 3432 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3433 return -1; 3434 /* GAS Comeback Response */ 3435 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3436 return -1; 3437#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3438#ifdef CONFIG_P2P 3439 /* P2P Public Action */ 3440 if (nl80211_register_action_frame(bss, 3441 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3442 6) < 0) 3443 return -1; 3444 /* P2P Action */ 3445 if (nl80211_register_action_frame(bss, 3446 (u8 *) "\x7f\x50\x6f\x9a\x09", 3447 5) < 0) 3448 return -1; 3449#endif /* CONFIG_P2P */ 3450#ifdef CONFIG_IEEE80211W 3451 /* SA Query Response */ 3452 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3453 return -1; 3454#endif /* CONFIG_IEEE80211W */ 3455#ifdef CONFIG_TDLS 3456 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3457 /* TDLS Discovery Response */ 3458 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3459 0) 3460 return -1; 3461 } 3462#endif /* CONFIG_TDLS */ 3463 3464 /* FT Action frames */ 3465 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3466 return -1; 3467 else 3468 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3469 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3470 3471 /* WNM - BSS Transition Management Request */ 3472 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3473 return -1; 3474 /* WNM-Sleep Mode Response */ 3475 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0) 3476 return -1; 3477 3478 return 0; 3479} 3480 3481 3482static int nl80211_register_spurious_class3(struct i802_bss *bss) 3483{ 3484 struct wpa_driver_nl80211_data *drv = bss->drv; 3485 struct nl_msg *msg; 3486 int ret = -1; 3487 3488 msg = nlmsg_alloc(); 3489 if (!msg) 3490 return -1; 3491 3492 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3493 3494 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3495 3496 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3497 msg = NULL; 3498 if (ret) { 3499 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3500 "failed: ret=%d (%s)", 3501 ret, strerror(-ret)); 3502 goto nla_put_failure; 3503 } 3504 ret = 0; 3505nla_put_failure: 3506 nlmsg_free(msg); 3507 return ret; 3508} 3509 3510 3511static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3512{ 3513 static const int stypes[] = { 3514 WLAN_FC_STYPE_AUTH, 3515 WLAN_FC_STYPE_ASSOC_REQ, 3516 WLAN_FC_STYPE_REASSOC_REQ, 3517 WLAN_FC_STYPE_DISASSOC, 3518 WLAN_FC_STYPE_DEAUTH, 3519 WLAN_FC_STYPE_ACTION, 3520 WLAN_FC_STYPE_PROBE_REQ, 3521/* Beacon doesn't work as mac80211 doesn't currently allow 3522 * it, but it wouldn't really be the right thing anyway as 3523 * it isn't per interface ... maybe just dump the scan 3524 * results periodically for OLBC? 3525 */ 3526// WLAN_FC_STYPE_BEACON, 3527 }; 3528 unsigned int i; 3529 3530 if (nl80211_alloc_mgmt_handle(bss)) 3531 return -1; 3532 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3533 "handle %p", bss->nl_mgmt); 3534 3535 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3536 if (nl80211_register_frame(bss, bss->nl_mgmt, 3537 (WLAN_FC_TYPE_MGMT << 2) | 3538 (stypes[i] << 4), 3539 NULL, 0) < 0) { 3540 goto out_err; 3541 } 3542 } 3543 3544 if (nl80211_register_spurious_class3(bss)) 3545 goto out_err; 3546 3547 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3548 goto out_err; 3549 3550 return 0; 3551 3552out_err: 3553 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3554 nl_destroy_handles(&bss->nl_mgmt); 3555 return -1; 3556} 3557 3558 3559static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3560{ 3561 if (nl80211_alloc_mgmt_handle(bss)) 3562 return -1; 3563 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3564 "handle %p (device SME)", bss->nl_mgmt); 3565 3566 if (nl80211_register_frame(bss, bss->nl_mgmt, 3567 (WLAN_FC_TYPE_MGMT << 2) | 3568 (WLAN_FC_STYPE_ACTION << 4), 3569 NULL, 0) < 0) 3570 goto out_err; 3571 3572 return 0; 3573 3574out_err: 3575 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3576 nl_destroy_handles(&bss->nl_mgmt); 3577 return -1; 3578} 3579 3580 3581static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3582{ 3583 if (bss->nl_mgmt == NULL) 3584 return; 3585 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3586 "(%s)", bss->nl_mgmt, reason); 3587 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3588 nl_destroy_handles(&bss->nl_mgmt); 3589 3590 nl80211_put_wiphy_data_ap(bss); 3591} 3592 3593 3594static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3595{ 3596 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3597} 3598 3599 3600static int 3601wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3602{ 3603 struct i802_bss *bss = &drv->first_bss; 3604 int send_rfkill_event = 0; 3605 3606 drv->ifindex = if_nametoindex(bss->ifname); 3607 drv->first_bss.ifindex = drv->ifindex; 3608 3609#ifndef HOSTAPD 3610 /* 3611 * Make sure the interface starts up in station mode unless this is a 3612 * dynamically added interface (e.g., P2P) that was already configured 3613 * with proper iftype. 3614 */ 3615 if (drv->ifindex != drv->global->if_add_ifindex && 3616 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3617 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3618 "use managed mode"); 3619 return -1; 3620 } 3621 3622 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3623 if (rfkill_is_blocked(drv->rfkill)) { 3624 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3625 "interface '%s' due to rfkill", 3626 bss->ifname); 3627 drv->if_disabled = 1; 3628 send_rfkill_event = 1; 3629 } else { 3630 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3631 "interface '%s' UP", bss->ifname); 3632 return -1; 3633 } 3634 } 3635 3636 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3637 1, IF_OPER_DORMANT); 3638#endif /* HOSTAPD */ 3639 3640 if (wpa_driver_nl80211_capa(drv)) 3641 return -1; 3642 3643 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3644 bss->addr)) 3645 return -1; 3646 3647 if (send_rfkill_event) { 3648 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3649 drv, drv->ctx); 3650 } 3651 3652 return 0; 3653} 3654 3655 3656static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3657{ 3658 struct nl_msg *msg; 3659 3660 msg = nlmsg_alloc(); 3661 if (!msg) 3662 return -ENOMEM; 3663 3664 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3665 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3666 3667 return send_and_recv_msgs(drv, msg, NULL, NULL); 3668 nla_put_failure: 3669 nlmsg_free(msg); 3670 return -ENOBUFS; 3671} 3672 3673 3674/** 3675 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3676 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3677 * 3678 * Shut down driver interface and processing of driver events. Free 3679 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3680 */ 3681static void wpa_driver_nl80211_deinit(struct i802_bss *bss) 3682{ 3683 struct wpa_driver_nl80211_data *drv = bss->drv; 3684 3685 bss->in_deinit = 1; 3686 if (drv->data_tx_status) 3687 eloop_unregister_read_sock(drv->eapol_tx_sock); 3688 if (drv->eapol_tx_sock >= 0) 3689 close(drv->eapol_tx_sock); 3690 3691 if (bss->nl_preq) 3692 wpa_driver_nl80211_probe_req_report(bss, 0); 3693 if (bss->added_if_into_bridge) { 3694 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3695 bss->ifname) < 0) 3696 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3697 "interface %s from bridge %s: %s", 3698 bss->ifname, bss->brname, strerror(errno)); 3699 } 3700 if (bss->added_bridge) { 3701 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3702 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3703 "bridge %s: %s", 3704 bss->brname, strerror(errno)); 3705 } 3706 3707 nl80211_remove_monitor_interface(drv); 3708 3709 if (is_ap_interface(drv->nlmode)) 3710 wpa_driver_nl80211_del_beacon(drv); 3711 3712#ifdef HOSTAPD 3713 if (drv->last_freq_ht) { 3714 /* Clear HT flags from the driver */ 3715 struct hostapd_freq_params freq; 3716 os_memset(&freq, 0, sizeof(freq)); 3717 freq.freq = drv->last_freq; 3718 wpa_driver_nl80211_set_freq(bss, &freq); 3719 } 3720 3721 if (drv->eapol_sock >= 0) { 3722 eloop_unregister_read_sock(drv->eapol_sock); 3723 close(drv->eapol_sock); 3724 } 3725 3726 if (drv->if_indices != drv->default_if_indices) 3727 os_free(drv->if_indices); 3728#endif /* HOSTAPD */ 3729 3730 if (drv->disabled_11b_rates) 3731 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3732 3733 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3734 IF_OPER_UP); 3735 rfkill_deinit(drv->rfkill); 3736 3737 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3738 3739 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3740 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3741 nl80211_mgmt_unsubscribe(bss, "deinit"); 3742 3743 nl_cb_put(drv->nl_cb); 3744 3745 nl80211_destroy_bss(&drv->first_bss); 3746 3747 os_free(drv->filter_ssids); 3748 3749 os_free(drv->auth_ie); 3750 3751 if (drv->in_interface_list) 3752 dl_list_del(&drv->list); 3753 3754 os_free(drv); 3755} 3756 3757 3758/** 3759 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3760 * @eloop_ctx: Driver private data 3761 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3762 * 3763 * This function can be used as registered timeout when starting a scan to 3764 * generate a scan completed event if the driver does not report this. 3765 */ 3766static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3767{ 3768 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3769 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3770 wpa_driver_nl80211_set_mode(&drv->first_bss, 3771 drv->ap_scan_as_station); 3772 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3773 } 3774 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3775 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3776} 3777 3778 3779static struct nl_msg * 3780nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, 3781 struct wpa_driver_scan_params *params) 3782{ 3783 struct nl_msg *msg; 3784 int err; 3785 size_t i; 3786 3787 msg = nlmsg_alloc(); 3788 if (!msg) 3789 return NULL; 3790 3791 nl80211_cmd(drv, msg, 0, cmd); 3792 3793 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0) 3794 goto fail; 3795 3796 if (params->num_ssids) { 3797 struct nl_msg *ssids = nlmsg_alloc(); 3798 if (ssids == NULL) 3799 goto fail; 3800 for (i = 0; i < params->num_ssids; i++) { 3801 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3802 params->ssids[i].ssid, 3803 params->ssids[i].ssid_len); 3804 if (nla_put(ssids, i + 1, params->ssids[i].ssid_len, 3805 params->ssids[i].ssid) < 0) { 3806 nlmsg_free(ssids); 3807 goto fail; 3808 } 3809 } 3810 err = nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3811 nlmsg_free(ssids); 3812 if (err < 0) 3813 goto fail; 3814 } 3815 3816 if (params->extra_ies) { 3817 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3818 params->extra_ies, params->extra_ies_len); 3819 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, 3820 params->extra_ies) < 0) 3821 goto fail; 3822 } 3823 3824 if (params->freqs) { 3825 struct nl_msg *freqs = nlmsg_alloc(); 3826 if (freqs == NULL) 3827 goto fail; 3828 for (i = 0; params->freqs[i]; i++) { 3829 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3830 "MHz", params->freqs[i]); 3831 if (nla_put_u32(freqs, i + 1, params->freqs[i]) < 0) { 3832 nlmsg_free(freqs); 3833 goto fail; 3834 } 3835 } 3836 err = nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, 3837 freqs); 3838 nlmsg_free(freqs); 3839 if (err < 0) 3840 goto fail; 3841 } 3842 3843 os_free(drv->filter_ssids); 3844 drv->filter_ssids = params->filter_ssids; 3845 params->filter_ssids = NULL; 3846 drv->num_filter_ssids = params->num_filter_ssids; 3847 3848 return msg; 3849 3850fail: 3851 nlmsg_free(msg); 3852 return NULL; 3853} 3854 3855 3856/** 3857 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3858 * @bss: Pointer to private driver data from wpa_driver_nl80211_init() 3859 * @params: Scan parameters 3860 * Returns: 0 on success, -1 on failure 3861 */ 3862static int wpa_driver_nl80211_scan(struct i802_bss *bss, 3863 struct wpa_driver_scan_params *params) 3864{ 3865 struct wpa_driver_nl80211_data *drv = bss->drv; 3866 int ret = -1, timeout; 3867 struct nl_msg *msg, *rates = NULL; 3868 3869 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request"); 3870 drv->scan_for_auth = 0; 3871 3872 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params); 3873 if (!msg) 3874 return -1; 3875 3876 if (params->p2p_probe) { 3877 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 3878 3879 rates = nlmsg_alloc(); 3880 if (rates == NULL) 3881 goto nla_put_failure; 3882 3883 /* 3884 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3885 * by masking out everything else apart from the OFDM rates 6, 3886 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3887 * rates are left enabled. 3888 */ 3889 NLA_PUT(rates, NL80211_BAND_2GHZ, 8, 3890 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3891 if (nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates) < 3892 0) 3893 goto nla_put_failure; 3894 3895 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3896 } 3897 3898 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3899 msg = NULL; 3900 if (ret) { 3901 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3902 "(%s)", ret, strerror(-ret)); 3903#ifdef HOSTAPD 3904 if (is_ap_interface(drv->nlmode)) { 3905 /* 3906 * mac80211 does not allow scan requests in AP mode, so 3907 * try to do this in station mode. 3908 */ 3909 if (wpa_driver_nl80211_set_mode( 3910 bss, NL80211_IFTYPE_STATION)) 3911 goto nla_put_failure; 3912 3913 if (wpa_driver_nl80211_scan(bss, params)) { 3914 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3915 goto nla_put_failure; 3916 } 3917 3918 /* Restore AP mode when processing scan results */ 3919 drv->ap_scan_as_station = drv->nlmode; 3920 ret = 0; 3921 } else 3922 goto nla_put_failure; 3923#else /* HOSTAPD */ 3924 goto nla_put_failure; 3925#endif /* HOSTAPD */ 3926 } 3927 3928 /* Not all drivers generate "scan completed" wireless event, so try to 3929 * read results after a timeout. */ 3930 timeout = 10; 3931 if (drv->scan_complete_events) { 3932 /* 3933 * The driver seems to deliver events to notify when scan is 3934 * complete, so use longer timeout to avoid race conditions 3935 * with scanning and following association request. 3936 */ 3937 timeout = 30; 3938 } 3939 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3940 "seconds", ret, timeout); 3941 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3942 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3943 drv, drv->ctx); 3944 3945nla_put_failure: 3946 nlmsg_free(msg); 3947 nlmsg_free(rates); 3948 return ret; 3949} 3950 3951 3952/** 3953 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3954 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3955 * @params: Scan parameters 3956 * @interval: Interval between scan cycles in milliseconds 3957 * Returns: 0 on success, -1 on failure or if not supported 3958 */ 3959static int wpa_driver_nl80211_sched_scan(void *priv, 3960 struct wpa_driver_scan_params *params, 3961 u32 interval) 3962{ 3963 struct i802_bss *bss = priv; 3964 struct wpa_driver_nl80211_data *drv = bss->drv; 3965 int ret = -1; 3966 struct nl_msg *msg; 3967 struct nl_msg *match_set_ssid = NULL, *match_sets = NULL; 3968 struct nl_msg *match_set_rssi = NULL; 3969 size_t i; 3970 3971 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request"); 3972 3973#ifdef ANDROID 3974 if (!drv->capa.sched_scan_supported) 3975 return android_pno_start(bss, params); 3976#endif /* ANDROID */ 3977 3978 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params); 3979 if (!msg) 3980 goto nla_put_failure; 3981 3982 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 3983 3984 if ((drv->num_filter_ssids && 3985 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || 3986 params->filter_rssi) { 3987 match_sets = nlmsg_alloc(); 3988 if (match_sets == NULL) 3989 goto nla_put_failure; 3990 3991 for (i = 0; i < drv->num_filter_ssids; i++) { 3992 wpa_hexdump_ascii(MSG_MSGDUMP, 3993 "nl80211: Sched scan filter SSID", 3994 drv->filter_ssids[i].ssid, 3995 drv->filter_ssids[i].ssid_len); 3996 3997 match_set_ssid = nlmsg_alloc(); 3998 if (match_set_ssid == NULL) 3999 goto nla_put_failure; 4000 NLA_PUT(match_set_ssid, 4001 NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 4002 drv->filter_ssids[i].ssid_len, 4003 drv->filter_ssids[i].ssid); 4004 4005 if (nla_put_nested(match_sets, i + 1, match_set_ssid) < 4006 0) 4007 goto nla_put_failure; 4008 } 4009 4010 if (params->filter_rssi) { 4011 match_set_rssi = nlmsg_alloc(); 4012 if (match_set_rssi == NULL) 4013 goto nla_put_failure; 4014 NLA_PUT_U32(match_set_rssi, 4015 NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 4016 params->filter_rssi); 4017 wpa_printf(MSG_MSGDUMP, 4018 "nl80211: Sched scan RSSI filter %d dBm", 4019 params->filter_rssi); 4020 if (nla_put_nested(match_sets, 0, match_set_rssi) < 0) 4021 goto nla_put_failure; 4022 } 4023 4024 if (nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH, 4025 match_sets) < 0) 4026 goto nla_put_failure; 4027 } 4028 4029 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4030 4031 /* TODO: if we get an error here, we should fall back to normal scan */ 4032 4033 msg = NULL; 4034 if (ret) { 4035 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 4036 "ret=%d (%s)", ret, strerror(-ret)); 4037 goto nla_put_failure; 4038 } 4039 4040 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 4041 "scan interval %d msec", ret, interval); 4042 4043nla_put_failure: 4044 nlmsg_free(match_set_ssid); 4045 nlmsg_free(match_sets); 4046 nlmsg_free(match_set_rssi); 4047 nlmsg_free(msg); 4048 return ret; 4049} 4050 4051 4052/** 4053 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 4054 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 4055 * Returns: 0 on success, -1 on failure or if not supported 4056 */ 4057static int wpa_driver_nl80211_stop_sched_scan(void *priv) 4058{ 4059 struct i802_bss *bss = priv; 4060 struct wpa_driver_nl80211_data *drv = bss->drv; 4061 int ret = 0; 4062 struct nl_msg *msg; 4063 4064#ifdef ANDROID 4065 if (!drv->capa.sched_scan_supported) 4066 return android_pno_stop(bss); 4067#endif /* ANDROID */ 4068 4069 msg = nlmsg_alloc(); 4070 if (!msg) 4071 return -1; 4072 4073 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 4074 4075 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4076 4077 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4078 msg = NULL; 4079 if (ret) { 4080 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 4081 "ret=%d (%s)", ret, strerror(-ret)); 4082 goto nla_put_failure; 4083 } 4084 4085 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 4086 4087nla_put_failure: 4088 nlmsg_free(msg); 4089 return ret; 4090} 4091 4092 4093static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 4094{ 4095 const u8 *end, *pos; 4096 4097 if (ies == NULL) 4098 return NULL; 4099 4100 pos = ies; 4101 end = ies + ies_len; 4102 4103 while (pos + 1 < end) { 4104 if (pos + 2 + pos[1] > end) 4105 break; 4106 if (pos[0] == ie) 4107 return pos; 4108 pos += 2 + pos[1]; 4109 } 4110 4111 return NULL; 4112} 4113 4114 4115static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 4116 const u8 *ie, size_t ie_len) 4117{ 4118 const u8 *ssid; 4119 size_t i; 4120 4121 if (drv->filter_ssids == NULL) 4122 return 0; 4123 4124 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 4125 if (ssid == NULL) 4126 return 1; 4127 4128 for (i = 0; i < drv->num_filter_ssids; i++) { 4129 if (ssid[1] == drv->filter_ssids[i].ssid_len && 4130 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 4131 0) 4132 return 0; 4133 } 4134 4135 return 1; 4136} 4137 4138 4139static int bss_info_handler(struct nl_msg *msg, void *arg) 4140{ 4141 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 4142 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4143 struct nlattr *bss[NL80211_BSS_MAX + 1]; 4144 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 4145 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 4146 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 4147 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 4148 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 4149 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 4150 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 4151 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 4152 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 4153 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 4154 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 4155 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 4156 }; 4157 struct nl80211_bss_info_arg *_arg = arg; 4158 struct wpa_scan_results *res = _arg->res; 4159 struct wpa_scan_res **tmp; 4160 struct wpa_scan_res *r; 4161 const u8 *ie, *beacon_ie; 4162 size_t ie_len, beacon_ie_len; 4163 u8 *pos; 4164 size_t i; 4165 4166 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4167 genlmsg_attrlen(gnlh, 0), NULL); 4168 if (!tb[NL80211_ATTR_BSS]) 4169 return NL_SKIP; 4170 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 4171 bss_policy)) 4172 return NL_SKIP; 4173 if (bss[NL80211_BSS_STATUS]) { 4174 enum nl80211_bss_status status; 4175 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4176 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4177 bss[NL80211_BSS_FREQUENCY]) { 4178 _arg->assoc_freq = 4179 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4180 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 4181 _arg->assoc_freq); 4182 } 4183 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4184 bss[NL80211_BSS_BSSID]) { 4185 os_memcpy(_arg->assoc_bssid, 4186 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 4187 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 4188 MACSTR, MAC2STR(_arg->assoc_bssid)); 4189 } 4190 } 4191 if (!res) 4192 return NL_SKIP; 4193 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 4194 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4195 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4196 } else { 4197 ie = NULL; 4198 ie_len = 0; 4199 } 4200 if (bss[NL80211_BSS_BEACON_IES]) { 4201 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 4202 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 4203 } else { 4204 beacon_ie = NULL; 4205 beacon_ie_len = 0; 4206 } 4207 4208 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 4209 ie ? ie_len : beacon_ie_len)) 4210 return NL_SKIP; 4211 4212 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 4213 if (r == NULL) 4214 return NL_SKIP; 4215 if (bss[NL80211_BSS_BSSID]) 4216 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 4217 ETH_ALEN); 4218 if (bss[NL80211_BSS_FREQUENCY]) 4219 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4220 if (bss[NL80211_BSS_BEACON_INTERVAL]) 4221 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 4222 if (bss[NL80211_BSS_CAPABILITY]) 4223 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 4224 r->flags |= WPA_SCAN_NOISE_INVALID; 4225 if (bss[NL80211_BSS_SIGNAL_MBM]) { 4226 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 4227 r->level /= 100; /* mBm to dBm */ 4228 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 4229 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 4230 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 4231 r->flags |= WPA_SCAN_QUAL_INVALID; 4232 } else 4233 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 4234 if (bss[NL80211_BSS_TSF]) 4235 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 4236 if (bss[NL80211_BSS_SEEN_MS_AGO]) 4237 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 4238 r->ie_len = ie_len; 4239 pos = (u8 *) (r + 1); 4240 if (ie) { 4241 os_memcpy(pos, ie, ie_len); 4242 pos += ie_len; 4243 } 4244 r->beacon_ie_len = beacon_ie_len; 4245 if (beacon_ie) 4246 os_memcpy(pos, beacon_ie, beacon_ie_len); 4247 4248 if (bss[NL80211_BSS_STATUS]) { 4249 enum nl80211_bss_status status; 4250 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4251 switch (status) { 4252 case NL80211_BSS_STATUS_AUTHENTICATED: 4253 r->flags |= WPA_SCAN_AUTHENTICATED; 4254 break; 4255 case NL80211_BSS_STATUS_ASSOCIATED: 4256 r->flags |= WPA_SCAN_ASSOCIATED; 4257 break; 4258 default: 4259 break; 4260 } 4261 } 4262 4263 /* 4264 * cfg80211 maintains separate BSS table entries for APs if the same 4265 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 4266 * not use frequency as a separate key in the BSS table, so filter out 4267 * duplicated entries. Prefer associated BSS entry in such a case in 4268 * order to get the correct frequency into the BSS table. 4269 */ 4270 for (i = 0; i < res->num; i++) { 4271 const u8 *s1, *s2; 4272 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 4273 continue; 4274 4275 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 4276 res->res[i]->ie_len, WLAN_EID_SSID); 4277 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 4278 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 4279 os_memcmp(s1, s2, 2 + s1[1]) != 0) 4280 continue; 4281 4282 /* Same BSSID,SSID was already included in scan results */ 4283 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 4284 "for " MACSTR, MAC2STR(r->bssid)); 4285 4286 if ((r->flags & WPA_SCAN_ASSOCIATED) && 4287 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 4288 os_free(res->res[i]); 4289 res->res[i] = r; 4290 } else 4291 os_free(r); 4292 return NL_SKIP; 4293 } 4294 4295 tmp = os_realloc_array(res->res, res->num + 1, 4296 sizeof(struct wpa_scan_res *)); 4297 if (tmp == NULL) { 4298 os_free(r); 4299 return NL_SKIP; 4300 } 4301 tmp[res->num++] = r; 4302 res->res = tmp; 4303 4304 return NL_SKIP; 4305} 4306 4307 4308static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 4309 const u8 *addr) 4310{ 4311 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4312 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4313 "mismatch (" MACSTR ")", MAC2STR(addr)); 4314 wpa_driver_nl80211_mlme(drv, addr, 4315 NL80211_CMD_DEAUTHENTICATE, 4316 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4317 } 4318} 4319 4320 4321static void wpa_driver_nl80211_check_bss_status( 4322 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4323{ 4324 size_t i; 4325 4326 for (i = 0; i < res->num; i++) { 4327 struct wpa_scan_res *r = res->res[i]; 4328 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4329 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4330 "indicates BSS status with " MACSTR 4331 " as authenticated", 4332 MAC2STR(r->bssid)); 4333 if (is_sta_interface(drv->nlmode) && 4334 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4335 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4336 0) { 4337 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4338 " in local state (auth=" MACSTR 4339 " assoc=" MACSTR ")", 4340 MAC2STR(drv->auth_bssid), 4341 MAC2STR(drv->bssid)); 4342 clear_state_mismatch(drv, r->bssid); 4343 } 4344 } 4345 4346 if (r->flags & WPA_SCAN_ASSOCIATED) { 4347 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4348 "indicate BSS status with " MACSTR 4349 " as associated", 4350 MAC2STR(r->bssid)); 4351 if (is_sta_interface(drv->nlmode) && 4352 !drv->associated) { 4353 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4354 "(not associated) does not match " 4355 "with BSS state"); 4356 clear_state_mismatch(drv, r->bssid); 4357 } else if (is_sta_interface(drv->nlmode) && 4358 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4359 0) { 4360 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4361 "(associated with " MACSTR ") does " 4362 "not match with BSS state", 4363 MAC2STR(drv->bssid)); 4364 clear_state_mismatch(drv, r->bssid); 4365 clear_state_mismatch(drv, drv->bssid); 4366 } 4367 } 4368 } 4369} 4370 4371 4372static struct wpa_scan_results * 4373nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4374{ 4375 struct nl_msg *msg; 4376 struct wpa_scan_results *res; 4377 int ret; 4378 struct nl80211_bss_info_arg arg; 4379 4380 res = os_zalloc(sizeof(*res)); 4381 if (res == NULL) 4382 return NULL; 4383 msg = nlmsg_alloc(); 4384 if (!msg) 4385 goto nla_put_failure; 4386 4387 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 4388 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4389 4390 arg.drv = drv; 4391 arg.res = res; 4392 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 4393 msg = NULL; 4394 if (ret == 0) { 4395 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4396 "BSSes)", (unsigned long) res->num); 4397 nl80211_get_noise_for_scan_results(drv, res); 4398 return res; 4399 } 4400 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4401 "(%s)", ret, strerror(-ret)); 4402nla_put_failure: 4403 nlmsg_free(msg); 4404 wpa_scan_results_free(res); 4405 return NULL; 4406} 4407 4408 4409/** 4410 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4411 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4412 * Returns: Scan results on success, -1 on failure 4413 */ 4414static struct wpa_scan_results * 4415wpa_driver_nl80211_get_scan_results(void *priv) 4416{ 4417 struct i802_bss *bss = priv; 4418 struct wpa_driver_nl80211_data *drv = bss->drv; 4419 struct wpa_scan_results *res; 4420 4421 res = nl80211_get_scan_results(drv); 4422 if (res) 4423 wpa_driver_nl80211_check_bss_status(drv, res); 4424 return res; 4425} 4426 4427 4428static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4429{ 4430 struct wpa_scan_results *res; 4431 size_t i; 4432 4433 res = nl80211_get_scan_results(drv); 4434 if (res == NULL) { 4435 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4436 return; 4437 } 4438 4439 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4440 for (i = 0; i < res->num; i++) { 4441 struct wpa_scan_res *r = res->res[i]; 4442 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4443 (int) i, (int) res->num, MAC2STR(r->bssid), 4444 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4445 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4446 } 4447 4448 wpa_scan_results_free(res); 4449} 4450 4451 4452static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss, 4453 enum wpa_alg alg, const u8 *addr, 4454 int key_idx, int set_tx, 4455 const u8 *seq, size_t seq_len, 4456 const u8 *key, size_t key_len) 4457{ 4458 struct wpa_driver_nl80211_data *drv = bss->drv; 4459 int ifindex = if_nametoindex(ifname); 4460 struct nl_msg *msg; 4461 int ret; 4462 4463 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4464 "set_tx=%d seq_len=%lu key_len=%lu", 4465 __func__, ifindex, alg, addr, key_idx, set_tx, 4466 (unsigned long) seq_len, (unsigned long) key_len); 4467#ifdef CONFIG_TDLS 4468 if (key_idx == -1) 4469 key_idx = 0; 4470#endif /* CONFIG_TDLS */ 4471 4472 msg = nlmsg_alloc(); 4473 if (!msg) 4474 return -ENOMEM; 4475 4476 if (alg == WPA_ALG_NONE) { 4477 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4478 } else { 4479 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4480 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4481 switch (alg) { 4482 case WPA_ALG_WEP: 4483 if (key_len == 5) 4484 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4485 WLAN_CIPHER_SUITE_WEP40); 4486 else 4487 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4488 WLAN_CIPHER_SUITE_WEP104); 4489 break; 4490 case WPA_ALG_TKIP: 4491 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4492 WLAN_CIPHER_SUITE_TKIP); 4493 break; 4494 case WPA_ALG_CCMP: 4495 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4496 WLAN_CIPHER_SUITE_CCMP); 4497 break; 4498 case WPA_ALG_GCMP: 4499 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4500 WLAN_CIPHER_SUITE_GCMP); 4501 break; 4502 case WPA_ALG_IGTK: 4503 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4504 WLAN_CIPHER_SUITE_AES_CMAC); 4505 break; 4506 case WPA_ALG_SMS4: 4507 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4508 WLAN_CIPHER_SUITE_SMS4); 4509 break; 4510 case WPA_ALG_KRK: 4511 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4512 WLAN_CIPHER_SUITE_KRK); 4513 break; 4514 default: 4515 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4516 "algorithm %d", __func__, alg); 4517 nlmsg_free(msg); 4518 return -1; 4519 } 4520 } 4521 4522 if (seq && seq_len) 4523 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4524 4525 if (addr && !is_broadcast_ether_addr(addr)) { 4526 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4527 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4528 4529 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4530 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4531 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4532 NL80211_KEYTYPE_GROUP); 4533 } 4534 } else if (addr && is_broadcast_ether_addr(addr)) { 4535 struct nl_msg *types; 4536 int err; 4537 wpa_printf(MSG_DEBUG, " broadcast key"); 4538 types = nlmsg_alloc(); 4539 if (!types) 4540 goto nla_put_failure; 4541 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4542 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4543 types); 4544 nlmsg_free(types); 4545 if (err) 4546 goto nla_put_failure; 4547 } 4548 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4549 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4550 4551 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4552 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4553 ret = 0; 4554 if (ret) 4555 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4556 ret, strerror(-ret)); 4557 4558 /* 4559 * If we failed or don't need to set the default TX key (below), 4560 * we're done here. 4561 */ 4562 if (ret || !set_tx || alg == WPA_ALG_NONE) 4563 return ret; 4564 if (is_ap_interface(drv->nlmode) && addr && 4565 !is_broadcast_ether_addr(addr)) 4566 return ret; 4567 4568 msg = nlmsg_alloc(); 4569 if (!msg) 4570 return -ENOMEM; 4571 4572 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4573 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4574 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4575 if (alg == WPA_ALG_IGTK) 4576 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4577 else 4578 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4579 if (addr && is_broadcast_ether_addr(addr)) { 4580 struct nl_msg *types; 4581 int err; 4582 types = nlmsg_alloc(); 4583 if (!types) 4584 goto nla_put_failure; 4585 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4586 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4587 types); 4588 nlmsg_free(types); 4589 if (err) 4590 goto nla_put_failure; 4591 } else if (addr) { 4592 struct nl_msg *types; 4593 int err; 4594 types = nlmsg_alloc(); 4595 if (!types) 4596 goto nla_put_failure; 4597 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4598 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4599 types); 4600 nlmsg_free(types); 4601 if (err) 4602 goto nla_put_failure; 4603 } 4604 4605 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4606 if (ret == -ENOENT) 4607 ret = 0; 4608 if (ret) 4609 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4610 "err=%d %s)", ret, strerror(-ret)); 4611 return ret; 4612 4613nla_put_failure: 4614 nlmsg_free(msg); 4615 return -ENOBUFS; 4616} 4617 4618 4619static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4620 int key_idx, int defkey, 4621 const u8 *seq, size_t seq_len, 4622 const u8 *key, size_t key_len) 4623{ 4624 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4625 if (!key_attr) 4626 return -1; 4627 4628 if (defkey && alg == WPA_ALG_IGTK) 4629 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4630 else if (defkey) 4631 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4632 4633 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4634 4635 switch (alg) { 4636 case WPA_ALG_WEP: 4637 if (key_len == 5) 4638 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4639 WLAN_CIPHER_SUITE_WEP40); 4640 else 4641 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4642 WLAN_CIPHER_SUITE_WEP104); 4643 break; 4644 case WPA_ALG_TKIP: 4645 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4646 break; 4647 case WPA_ALG_CCMP: 4648 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4649 break; 4650 case WPA_ALG_GCMP: 4651 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); 4652 break; 4653 case WPA_ALG_IGTK: 4654 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4655 WLAN_CIPHER_SUITE_AES_CMAC); 4656 break; 4657 default: 4658 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4659 "algorithm %d", __func__, alg); 4660 return -1; 4661 } 4662 4663 if (seq && seq_len) 4664 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4665 4666 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4667 4668 nla_nest_end(msg, key_attr); 4669 4670 return 0; 4671 nla_put_failure: 4672 return -1; 4673} 4674 4675 4676static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4677 struct nl_msg *msg) 4678{ 4679 int i, privacy = 0; 4680 struct nlattr *nl_keys, *nl_key; 4681 4682 for (i = 0; i < 4; i++) { 4683 if (!params->wep_key[i]) 4684 continue; 4685 privacy = 1; 4686 break; 4687 } 4688 if (params->wps == WPS_MODE_PRIVACY) 4689 privacy = 1; 4690 if (params->pairwise_suite && 4691 params->pairwise_suite != WPA_CIPHER_NONE) 4692 privacy = 1; 4693 4694 if (!privacy) 4695 return 0; 4696 4697 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4698 4699 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4700 if (!nl_keys) 4701 goto nla_put_failure; 4702 4703 for (i = 0; i < 4; i++) { 4704 if (!params->wep_key[i]) 4705 continue; 4706 4707 nl_key = nla_nest_start(msg, i); 4708 if (!nl_key) 4709 goto nla_put_failure; 4710 4711 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4712 params->wep_key[i]); 4713 if (params->wep_key_len[i] == 5) 4714 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4715 WLAN_CIPHER_SUITE_WEP40); 4716 else 4717 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4718 WLAN_CIPHER_SUITE_WEP104); 4719 4720 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4721 4722 if (i == params->wep_tx_keyidx) 4723 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4724 4725 nla_nest_end(msg, nl_key); 4726 } 4727 nla_nest_end(msg, nl_keys); 4728 4729 return 0; 4730 4731nla_put_failure: 4732 return -ENOBUFS; 4733} 4734 4735 4736static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4737 const u8 *addr, int cmd, u16 reason_code, 4738 int local_state_change) 4739{ 4740 int ret = -1; 4741 struct nl_msg *msg; 4742 4743 msg = nlmsg_alloc(); 4744 if (!msg) 4745 return -1; 4746 4747 nl80211_cmd(drv, msg, 0, cmd); 4748 4749 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4750 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4751 if (addr) 4752 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4753 if (local_state_change) 4754 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4755 4756 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4757 msg = NULL; 4758 if (ret) { 4759 wpa_dbg(drv->ctx, MSG_DEBUG, 4760 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4761 reason_code, ret, strerror(-ret)); 4762 goto nla_put_failure; 4763 } 4764 ret = 0; 4765 4766nla_put_failure: 4767 nlmsg_free(msg); 4768 return ret; 4769} 4770 4771 4772static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4773 int reason_code) 4774{ 4775 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code); 4776 drv->associated = 0; 4777 drv->ignore_next_local_disconnect = 0; 4778 /* Disconnect command doesn't need BSSID - it uses cached value */ 4779 return wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT, 4780 reason_code, 0); 4781} 4782 4783 4784static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss, 4785 const u8 *addr, int reason_code) 4786{ 4787 struct wpa_driver_nl80211_data *drv = bss->drv; 4788 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4789 return wpa_driver_nl80211_disconnect(drv, reason_code); 4790 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4791 __func__, MAC2STR(addr), reason_code); 4792 drv->associated = 0; 4793 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4794 return nl80211_leave_ibss(drv); 4795 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4796 reason_code, 0); 4797} 4798 4799 4800static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4801 struct wpa_driver_auth_params *params) 4802{ 4803 int i; 4804 4805 drv->auth_freq = params->freq; 4806 drv->auth_alg = params->auth_alg; 4807 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4808 drv->auth_local_state_change = params->local_state_change; 4809 drv->auth_p2p = params->p2p; 4810 4811 if (params->bssid) 4812 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4813 else 4814 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4815 4816 if (params->ssid) { 4817 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4818 drv->auth_ssid_len = params->ssid_len; 4819 } else 4820 drv->auth_ssid_len = 0; 4821 4822 4823 os_free(drv->auth_ie); 4824 drv->auth_ie = NULL; 4825 drv->auth_ie_len = 0; 4826 if (params->ie) { 4827 drv->auth_ie = os_malloc(params->ie_len); 4828 if (drv->auth_ie) { 4829 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4830 drv->auth_ie_len = params->ie_len; 4831 } 4832 } 4833 4834 for (i = 0; i < 4; i++) { 4835 if (params->wep_key[i] && params->wep_key_len[i] && 4836 params->wep_key_len[i] <= 16) { 4837 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4838 params->wep_key_len[i]); 4839 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4840 } else 4841 drv->auth_wep_key_len[i] = 0; 4842 } 4843} 4844 4845 4846static int wpa_driver_nl80211_authenticate( 4847 struct i802_bss *bss, struct wpa_driver_auth_params *params) 4848{ 4849 struct wpa_driver_nl80211_data *drv = bss->drv; 4850 int ret = -1, i; 4851 struct nl_msg *msg; 4852 enum nl80211_auth_type type; 4853 enum nl80211_iftype nlmode; 4854 int count = 0; 4855 int is_retry; 4856 4857 is_retry = drv->retry_auth; 4858 drv->retry_auth = 0; 4859 4860 drv->associated = 0; 4861 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4862 /* FIX: IBSS mode */ 4863 nlmode = params->p2p ? 4864 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4865 if (drv->nlmode != nlmode && 4866 wpa_driver_nl80211_set_mode(bss, nlmode) < 0) 4867 return -1; 4868 4869retry: 4870 msg = nlmsg_alloc(); 4871 if (!msg) 4872 return -1; 4873 4874 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4875 drv->ifindex); 4876 4877 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4878 4879 for (i = 0; i < 4; i++) { 4880 if (!params->wep_key[i]) 4881 continue; 4882 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP, 4883 NULL, i, 4884 i == params->wep_tx_keyidx, NULL, 0, 4885 params->wep_key[i], 4886 params->wep_key_len[i]); 4887 if (params->wep_tx_keyidx != i) 4888 continue; 4889 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4890 params->wep_key[i], params->wep_key_len[i])) { 4891 nlmsg_free(msg); 4892 return -1; 4893 } 4894 } 4895 4896 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4897 if (params->bssid) { 4898 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4899 MAC2STR(params->bssid)); 4900 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4901 } 4902 if (params->freq) { 4903 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4904 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4905 } 4906 if (params->ssid) { 4907 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4908 params->ssid, params->ssid_len); 4909 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4910 params->ssid); 4911 } 4912 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4913 if (params->ie) 4914 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4915 if (params->sae_data) { 4916 wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data, 4917 params->sae_data_len); 4918 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len, 4919 params->sae_data); 4920 } 4921 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4922 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4923 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4924 type = NL80211_AUTHTYPE_SHARED_KEY; 4925 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4926 type = NL80211_AUTHTYPE_NETWORK_EAP; 4927 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4928 type = NL80211_AUTHTYPE_FT; 4929 else if (params->auth_alg & WPA_AUTH_ALG_SAE) 4930 type = NL80211_AUTHTYPE_SAE; 4931 else 4932 goto nla_put_failure; 4933 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4934 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4935 if (params->local_state_change) { 4936 wpa_printf(MSG_DEBUG, " * Local state change only"); 4937 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4938 } 4939 4940 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4941 msg = NULL; 4942 if (ret) { 4943 wpa_dbg(drv->ctx, MSG_DEBUG, 4944 "nl80211: MLME command failed (auth): ret=%d (%s)", 4945 ret, strerror(-ret)); 4946 count++; 4947 if (ret == -EALREADY && count == 1 && params->bssid && 4948 !params->local_state_change) { 4949 /* 4950 * mac80211 does not currently accept new 4951 * authentication if we are already authenticated. As a 4952 * workaround, force deauthentication and try again. 4953 */ 4954 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4955 "after forced deauthentication"); 4956 wpa_driver_nl80211_deauthenticate( 4957 bss, params->bssid, 4958 WLAN_REASON_PREV_AUTH_NOT_VALID); 4959 nlmsg_free(msg); 4960 goto retry; 4961 } 4962 4963 if (ret == -ENOENT && params->freq && !is_retry) { 4964 /* 4965 * cfg80211 has likely expired the BSS entry even 4966 * though it was previously available in our internal 4967 * BSS table. To recover quickly, start a single 4968 * channel scan on the specified channel. 4969 */ 4970 struct wpa_driver_scan_params scan; 4971 int freqs[2]; 4972 4973 os_memset(&scan, 0, sizeof(scan)); 4974 scan.num_ssids = 1; 4975 if (params->ssid) { 4976 scan.ssids[0].ssid = params->ssid; 4977 scan.ssids[0].ssid_len = params->ssid_len; 4978 } 4979 freqs[0] = params->freq; 4980 freqs[1] = 0; 4981 scan.freqs = freqs; 4982 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 4983 "channel scan to refresh cfg80211 BSS " 4984 "entry"); 4985 ret = wpa_driver_nl80211_scan(bss, &scan); 4986 if (ret == 0) { 4987 nl80211_copy_auth_params(drv, params); 4988 drv->scan_for_auth = 1; 4989 } 4990 } else if (is_retry) { 4991 /* 4992 * Need to indicate this with an event since the return 4993 * value from the retry is not delivered to core code. 4994 */ 4995 union wpa_event_data event; 4996 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 4997 "failed"); 4998 os_memset(&event, 0, sizeof(event)); 4999 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 5000 ETH_ALEN); 5001 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 5002 &event); 5003 } 5004 5005 goto nla_put_failure; 5006 } 5007 ret = 0; 5008 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 5009 "successfully"); 5010 5011nla_put_failure: 5012 nlmsg_free(msg); 5013 return ret; 5014} 5015 5016 5017static int wpa_driver_nl80211_authenticate_retry( 5018 struct wpa_driver_nl80211_data *drv) 5019{ 5020 struct wpa_driver_auth_params params; 5021 struct i802_bss *bss = &drv->first_bss; 5022 int i; 5023 5024 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 5025 5026 os_memset(¶ms, 0, sizeof(params)); 5027 params.freq = drv->auth_freq; 5028 params.auth_alg = drv->auth_alg; 5029 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 5030 params.local_state_change = drv->auth_local_state_change; 5031 params.p2p = drv->auth_p2p; 5032 5033 if (!is_zero_ether_addr(drv->auth_bssid_)) 5034 params.bssid = drv->auth_bssid_; 5035 5036 if (drv->auth_ssid_len) { 5037 params.ssid = drv->auth_ssid; 5038 params.ssid_len = drv->auth_ssid_len; 5039 } 5040 5041 params.ie = drv->auth_ie; 5042 params.ie_len = drv->auth_ie_len; 5043 5044 for (i = 0; i < 4; i++) { 5045 if (drv->auth_wep_key_len[i]) { 5046 params.wep_key[i] = drv->auth_wep_key[i]; 5047 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 5048 } 5049 } 5050 5051 drv->retry_auth = 1; 5052 return wpa_driver_nl80211_authenticate(bss, ¶ms); 5053} 5054 5055 5056struct phy_info_arg { 5057 u16 *num_modes; 5058 struct hostapd_hw_modes *modes; 5059 int last_mode, last_chan_idx; 5060}; 5061 5062static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, 5063 struct nlattr *ampdu_factor, 5064 struct nlattr *ampdu_density, 5065 struct nlattr *mcs_set) 5066{ 5067 if (capa) 5068 mode->ht_capab = nla_get_u16(capa); 5069 5070 if (ampdu_factor) 5071 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; 5072 5073 if (ampdu_density) 5074 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; 5075 5076 if (mcs_set && nla_len(mcs_set) >= 16) { 5077 u8 *mcs; 5078 mcs = nla_data(mcs_set); 5079 os_memcpy(mode->mcs_set, mcs, 16); 5080 } 5081} 5082 5083 5084static void phy_info_vht_capa(struct hostapd_hw_modes *mode, 5085 struct nlattr *capa, 5086 struct nlattr *mcs_set) 5087{ 5088 if (capa) 5089 mode->vht_capab = nla_get_u32(capa); 5090 5091 if (mcs_set && nla_len(mcs_set) >= 8) { 5092 u8 *mcs; 5093 mcs = nla_data(mcs_set); 5094 os_memcpy(mode->vht_mcs_set, mcs, 8); 5095 } 5096} 5097 5098 5099static void phy_info_freq(struct hostapd_hw_modes *mode, 5100 struct hostapd_channel_data *chan, 5101 struct nlattr *tb_freq[]) 5102{ 5103 enum hostapd_hw_mode m; 5104 5105 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 5106 chan->flag = 0; 5107 5108 if (chan->freq < 4000) 5109 m = HOSTAPD_MODE_IEEE80211B; 5110 else if (chan->freq > 50000) 5111 m = HOSTAPD_MODE_IEEE80211AD; 5112 else 5113 m = HOSTAPD_MODE_IEEE80211A; 5114 5115 switch (m) { 5116 case HOSTAPD_MODE_IEEE80211AD: 5117 chan->chan = (chan->freq - 56160) / 2160; 5118 break; 5119 case HOSTAPD_MODE_IEEE80211A: 5120 chan->chan = chan->freq / 5 - 1000; 5121 break; 5122 case HOSTAPD_MODE_IEEE80211B: 5123 case HOSTAPD_MODE_IEEE80211G: 5124 if (chan->freq == 2484) 5125 chan->chan = 14; 5126 else 5127 chan->chan = (chan->freq - 2407) / 5; 5128 break; 5129 default: 5130 break; 5131 } 5132 5133 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5134 chan->flag |= HOSTAPD_CHAN_DISABLED; 5135 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 5136 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN; 5137 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 5138 chan->flag |= HOSTAPD_CHAN_NO_IBSS; 5139 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 5140 chan->flag |= HOSTAPD_CHAN_RADAR; 5141 5142 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 5143 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5144 chan->max_tx_power = nla_get_u32( 5145 tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 5146} 5147 5148 5149static int phy_info_freqs(struct phy_info_arg *phy_info, 5150 struct hostapd_hw_modes *mode, struct nlattr *tb) 5151{ 5152 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5153 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 5154 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 5155 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 5156 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 5157 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 5158 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 5159 }; 5160 int new_channels = 0; 5161 struct hostapd_channel_data *channel; 5162 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 5163 struct nlattr *nl_freq; 5164 int rem_freq, idx; 5165 5166 if (tb == NULL) 5167 return NL_OK; 5168 5169 nla_for_each_nested(nl_freq, tb, rem_freq) { 5170 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5171 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5172 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5173 continue; 5174 new_channels++; 5175 } 5176 5177 channel = os_realloc_array(mode->channels, 5178 mode->num_channels + new_channels, 5179 sizeof(struct hostapd_channel_data)); 5180 if (!channel) 5181 return NL_SKIP; 5182 5183 mode->channels = channel; 5184 mode->num_channels += new_channels; 5185 5186 idx = phy_info->last_chan_idx; 5187 5188 nla_for_each_nested(nl_freq, tb, rem_freq) { 5189 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5190 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5191 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5192 continue; 5193 phy_info_freq(mode, &mode->channels[idx], tb_freq); 5194 idx++; 5195 } 5196 phy_info->last_chan_idx = idx; 5197 5198 return NL_OK; 5199} 5200 5201 5202static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 5203{ 5204 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 5205 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 5206 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 5207 { .type = NLA_FLAG }, 5208 }; 5209 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 5210 struct nlattr *nl_rate; 5211 int rem_rate, idx; 5212 5213 if (tb == NULL) 5214 return NL_OK; 5215 5216 nla_for_each_nested(nl_rate, tb, rem_rate) { 5217 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5218 nla_data(nl_rate), nla_len(nl_rate), 5219 rate_policy); 5220 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5221 continue; 5222 mode->num_rates++; 5223 } 5224 5225 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 5226 if (!mode->rates) 5227 return NL_SKIP; 5228 5229 idx = 0; 5230 5231 nla_for_each_nested(nl_rate, tb, rem_rate) { 5232 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5233 nla_data(nl_rate), nla_len(nl_rate), 5234 rate_policy); 5235 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5236 continue; 5237 mode->rates[idx] = nla_get_u32( 5238 tb_rate[NL80211_BITRATE_ATTR_RATE]); 5239 idx++; 5240 } 5241 5242 return NL_OK; 5243} 5244 5245 5246static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 5247{ 5248 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 5249 struct hostapd_hw_modes *mode; 5250 int ret; 5251 5252 if (phy_info->last_mode != nl_band->nla_type) { 5253 mode = os_realloc_array(phy_info->modes, 5254 *phy_info->num_modes + 1, 5255 sizeof(*mode)); 5256 if (!mode) 5257 return NL_SKIP; 5258 phy_info->modes = mode; 5259 5260 mode = &phy_info->modes[*(phy_info->num_modes)]; 5261 os_memset(mode, 0, sizeof(*mode)); 5262 mode->mode = NUM_HOSTAPD_MODES; 5263 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 5264 *(phy_info->num_modes) += 1; 5265 phy_info->last_mode = nl_band->nla_type; 5266 phy_info->last_chan_idx = 0; 5267 } else 5268 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 5269 5270 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 5271 nla_len(nl_band), NULL); 5272 5273 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 5274 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 5275 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 5276 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 5277 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 5278 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 5279 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 5280 if (ret != NL_OK) 5281 return ret; 5282 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 5283 if (ret != NL_OK) 5284 return ret; 5285 5286 return NL_OK; 5287} 5288 5289 5290static int phy_info_handler(struct nl_msg *msg, void *arg) 5291{ 5292 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5293 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5294 struct phy_info_arg *phy_info = arg; 5295 struct nlattr *nl_band; 5296 int rem_band; 5297 5298 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5299 genlmsg_attrlen(gnlh, 0), NULL); 5300 5301 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 5302 return NL_SKIP; 5303 5304 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 5305 { 5306 int res = phy_info_band(phy_info, nl_band); 5307 if (res != NL_OK) 5308 return res; 5309 } 5310 5311 return NL_SKIP; 5312} 5313 5314 5315static struct hostapd_hw_modes * 5316wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, 5317 u16 *num_modes) 5318{ 5319 u16 m; 5320 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 5321 int i, mode11g_idx = -1; 5322 5323 /* heuristic to set up modes */ 5324 for (m = 0; m < *num_modes; m++) { 5325 if (!modes[m].num_channels) 5326 continue; 5327 if (modes[m].channels[0].freq < 4000) { 5328 modes[m].mode = HOSTAPD_MODE_IEEE80211B; 5329 for (i = 0; i < modes[m].num_rates; i++) { 5330 if (modes[m].rates[i] > 200) { 5331 modes[m].mode = HOSTAPD_MODE_IEEE80211G; 5332 break; 5333 } 5334 } 5335 } else if (modes[m].channels[0].freq > 50000) 5336 modes[m].mode = HOSTAPD_MODE_IEEE80211AD; 5337 else 5338 modes[m].mode = HOSTAPD_MODE_IEEE80211A; 5339 } 5340 5341 /* If only 802.11g mode is included, use it to construct matching 5342 * 802.11b mode data. */ 5343 5344 for (m = 0; m < *num_modes; m++) { 5345 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 5346 return modes; /* 802.11b already included */ 5347 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 5348 mode11g_idx = m; 5349 } 5350 5351 if (mode11g_idx < 0) 5352 return modes; /* 2.4 GHz band not supported at all */ 5353 5354 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 5355 if (nmodes == NULL) 5356 return modes; /* Could not add 802.11b mode */ 5357 5358 mode = &nmodes[*num_modes]; 5359 os_memset(mode, 0, sizeof(*mode)); 5360 (*num_modes)++; 5361 modes = nmodes; 5362 5363 mode->mode = HOSTAPD_MODE_IEEE80211B; 5364 5365 mode11g = &modes[mode11g_idx]; 5366 mode->num_channels = mode11g->num_channels; 5367 mode->channels = os_malloc(mode11g->num_channels * 5368 sizeof(struct hostapd_channel_data)); 5369 if (mode->channels == NULL) { 5370 (*num_modes)--; 5371 return modes; /* Could not add 802.11b mode */ 5372 } 5373 os_memcpy(mode->channels, mode11g->channels, 5374 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 5375 5376 mode->num_rates = 0; 5377 mode->rates = os_malloc(4 * sizeof(int)); 5378 if (mode->rates == NULL) { 5379 os_free(mode->channels); 5380 (*num_modes)--; 5381 return modes; /* Could not add 802.11b mode */ 5382 } 5383 5384 for (i = 0; i < mode11g->num_rates; i++) { 5385 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 5386 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 5387 continue; 5388 mode->rates[mode->num_rates] = mode11g->rates[i]; 5389 mode->num_rates++; 5390 if (mode->num_rates == 4) 5391 break; 5392 } 5393 5394 if (mode->num_rates == 0) { 5395 os_free(mode->channels); 5396 os_free(mode->rates); 5397 (*num_modes)--; 5398 return modes; /* No 802.11b rates */ 5399 } 5400 5401 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 5402 "information"); 5403 5404 return modes; 5405} 5406 5407 5408static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5409 int end) 5410{ 5411 int c; 5412 5413 for (c = 0; c < mode->num_channels; c++) { 5414 struct hostapd_channel_data *chan = &mode->channels[c]; 5415 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5416 chan->flag |= HOSTAPD_CHAN_HT40; 5417 } 5418} 5419 5420 5421static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5422 int end) 5423{ 5424 int c; 5425 5426 for (c = 0; c < mode->num_channels; c++) { 5427 struct hostapd_channel_data *chan = &mode->channels[c]; 5428 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5429 continue; 5430 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5431 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5432 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5433 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5434 } 5435} 5436 5437 5438static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5439 struct phy_info_arg *results) 5440{ 5441 u32 start, end, max_bw; 5442 u16 m; 5443 5444 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5445 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5446 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5447 return; 5448 5449 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5450 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5451 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5452 5453 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5454 start, end, max_bw); 5455 if (max_bw < 40) 5456 return; 5457 5458 for (m = 0; m < *results->num_modes; m++) { 5459 if (!(results->modes[m].ht_capab & 5460 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5461 continue; 5462 nl80211_set_ht40_mode(&results->modes[m], start, end); 5463 } 5464} 5465 5466 5467static void nl80211_reg_rule_sec(struct nlattr *tb[], 5468 struct phy_info_arg *results) 5469{ 5470 u32 start, end, max_bw; 5471 u16 m; 5472 5473 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5474 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5475 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5476 return; 5477 5478 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5479 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5480 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5481 5482 if (max_bw < 20) 5483 return; 5484 5485 for (m = 0; m < *results->num_modes; m++) { 5486 if (!(results->modes[m].ht_capab & 5487 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5488 continue; 5489 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5490 } 5491} 5492 5493 5494static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5495{ 5496 struct phy_info_arg *results = arg; 5497 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5498 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5499 struct nlattr *nl_rule; 5500 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5501 int rem_rule; 5502 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5503 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5504 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5505 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5506 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5507 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5508 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5509 }; 5510 5511 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5512 genlmsg_attrlen(gnlh, 0), NULL); 5513 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5514 !tb_msg[NL80211_ATTR_REG_RULES]) { 5515 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5516 "available"); 5517 return NL_SKIP; 5518 } 5519 5520 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5521 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5522 5523 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5524 { 5525 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5526 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5527 nl80211_reg_rule_ht40(tb_rule, results); 5528 } 5529 5530 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5531 { 5532 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5533 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5534 nl80211_reg_rule_sec(tb_rule, results); 5535 } 5536 5537 return NL_SKIP; 5538} 5539 5540 5541static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5542 struct phy_info_arg *results) 5543{ 5544 struct nl_msg *msg; 5545 5546 msg = nlmsg_alloc(); 5547 if (!msg) 5548 return -ENOMEM; 5549 5550 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5551 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5552} 5553 5554 5555static struct hostapd_hw_modes * 5556wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5557{ 5558 u32 feat; 5559 struct i802_bss *bss = priv; 5560 struct wpa_driver_nl80211_data *drv = bss->drv; 5561 struct nl_msg *msg; 5562 struct phy_info_arg result = { 5563 .num_modes = num_modes, 5564 .modes = NULL, 5565 .last_mode = -1, 5566 }; 5567 5568 *num_modes = 0; 5569 *flags = 0; 5570 5571 msg = nlmsg_alloc(); 5572 if (!msg) 5573 return NULL; 5574 5575 feat = get_nl80211_protocol_features(drv); 5576 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 5577 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 5578 else 5579 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5580 5581 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 5582 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5583 5584 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5585 nl80211_set_ht40_flags(drv, &result); 5586 return wpa_driver_nl80211_postprocess_modes(result.modes, 5587 num_modes); 5588 } 5589 msg = NULL; 5590 nla_put_failure: 5591 nlmsg_free(msg); 5592 return NULL; 5593} 5594 5595 5596static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5597 const void *data, size_t len, 5598 int encrypt, int noack) 5599{ 5600 __u8 rtap_hdr[] = { 5601 0x00, 0x00, /* radiotap version */ 5602 0x0e, 0x00, /* radiotap length */ 5603 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5604 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5605 0x00, /* padding */ 5606 0x00, 0x00, /* RX and TX flags to indicate that */ 5607 0x00, 0x00, /* this is the injected frame directly */ 5608 }; 5609 struct iovec iov[2] = { 5610 { 5611 .iov_base = &rtap_hdr, 5612 .iov_len = sizeof(rtap_hdr), 5613 }, 5614 { 5615 .iov_base = (void *) data, 5616 .iov_len = len, 5617 } 5618 }; 5619 struct msghdr msg = { 5620 .msg_name = NULL, 5621 .msg_namelen = 0, 5622 .msg_iov = iov, 5623 .msg_iovlen = 2, 5624 .msg_control = NULL, 5625 .msg_controllen = 0, 5626 .msg_flags = 0, 5627 }; 5628 int res; 5629 u16 txflags = 0; 5630 5631 if (encrypt) 5632 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5633 5634 if (drv->monitor_sock < 0) { 5635 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5636 "for %s", __func__); 5637 return -1; 5638 } 5639 5640 if (noack) 5641 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5642 WPA_PUT_LE16(&rtap_hdr[12], txflags); 5643 5644 res = sendmsg(drv->monitor_sock, &msg, 0); 5645 if (res < 0) { 5646 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5647 return -1; 5648 } 5649 return 0; 5650} 5651 5652 5653static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5654 const void *data, size_t len, 5655 int encrypt, int noack, 5656 unsigned int freq, int no_cck, 5657 int offchanok, unsigned int wait_time) 5658{ 5659 struct wpa_driver_nl80211_data *drv = bss->drv; 5660 u64 cookie; 5661 5662 if (freq == 0) 5663 freq = bss->freq; 5664 5665 if (drv->use_monitor) 5666 return wpa_driver_nl80211_send_mntr(drv, data, len, 5667 encrypt, noack); 5668 5669 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5670 &cookie, no_cck, noack, offchanok); 5671} 5672 5673 5674static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data, 5675 size_t data_len, int noack, 5676 unsigned int freq, int no_cck, 5677 int offchanok, 5678 unsigned int wait_time) 5679{ 5680 struct wpa_driver_nl80211_data *drv = bss->drv; 5681 struct ieee80211_mgmt *mgmt; 5682 int encrypt = 1; 5683 u16 fc; 5684 5685 mgmt = (struct ieee80211_mgmt *) data; 5686 fc = le_to_host16(mgmt->frame_control); 5687 5688 if (is_sta_interface(drv->nlmode) && 5689 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5690 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5691 /* 5692 * The use of last_mgmt_freq is a bit of a hack, 5693 * but it works due to the single-threaded nature 5694 * of wpa_supplicant. 5695 */ 5696 if (freq == 0) 5697 freq = drv->last_mgmt_freq; 5698 return nl80211_send_frame_cmd(bss, freq, 0, 5699 data, data_len, NULL, 1, noack, 5700 1); 5701 } 5702 5703 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5704 if (freq == 0) 5705 freq = bss->freq; 5706 return nl80211_send_frame_cmd(bss, freq, 5707 (int) freq == bss->freq ? 0 : 5708 wait_time, 5709 data, data_len, 5710 &drv->send_action_cookie, 5711 no_cck, noack, offchanok); 5712 } 5713 5714 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5715 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5716 /* 5717 * Only one of the authentication frame types is encrypted. 5718 * In order for static WEP encryption to work properly (i.e., 5719 * to not encrypt the frame), we need to tell mac80211 about 5720 * the frames that must not be encrypted. 5721 */ 5722 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5723 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5724 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5725 encrypt = 0; 5726 } 5727 5728 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5729 noack, freq, no_cck, offchanok, 5730 wait_time); 5731} 5732 5733 5734static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5735 int slot, int ht_opmode, int ap_isolate, 5736 int *basic_rates) 5737{ 5738 struct wpa_driver_nl80211_data *drv = bss->drv; 5739 struct nl_msg *msg; 5740 5741 msg = nlmsg_alloc(); 5742 if (!msg) 5743 return -ENOMEM; 5744 5745 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5746 5747 if (cts >= 0) 5748 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5749 if (preamble >= 0) 5750 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5751 if (slot >= 0) 5752 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5753 if (ht_opmode >= 0) 5754 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5755 if (ap_isolate >= 0) 5756 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5757 5758 if (basic_rates) { 5759 u8 rates[NL80211_MAX_SUPP_RATES]; 5760 u8 rates_len = 0; 5761 int i; 5762 5763 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5764 i++) 5765 rates[rates_len++] = basic_rates[i] / 5; 5766 5767 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5768 } 5769 5770 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5771 5772 return send_and_recv_msgs(drv, msg, NULL, NULL); 5773 nla_put_failure: 5774 nlmsg_free(msg); 5775 return -ENOBUFS; 5776} 5777 5778 5779static int wpa_driver_nl80211_set_ap(void *priv, 5780 struct wpa_driver_ap_params *params) 5781{ 5782 struct i802_bss *bss = priv; 5783 struct wpa_driver_nl80211_data *drv = bss->drv; 5784 struct nl_msg *msg; 5785 u8 cmd = NL80211_CMD_NEW_BEACON; 5786 int ret; 5787 int beacon_set; 5788 int ifindex = if_nametoindex(bss->ifname); 5789 int num_suites; 5790 u32 suites[10]; 5791 u32 ver; 5792 5793 beacon_set = bss->beacon_set; 5794 5795 msg = nlmsg_alloc(); 5796 if (!msg) 5797 return -ENOMEM; 5798 5799 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5800 beacon_set); 5801 if (beacon_set) 5802 cmd = NL80211_CMD_SET_BEACON; 5803 5804 nl80211_cmd(drv, msg, 0, cmd); 5805 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head", 5806 params->head, params->head_len); 5807 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5808 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail", 5809 params->tail, params->tail_len); 5810 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5811 wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex); 5812 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5813 wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int); 5814 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5815 wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period); 5816 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5817 wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid", 5818 params->ssid, params->ssid_len); 5819 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5820 params->ssid); 5821 if (params->proberesp && params->proberesp_len) { 5822 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)", 5823 params->proberesp, params->proberesp_len); 5824 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5825 params->proberesp); 5826 } 5827 switch (params->hide_ssid) { 5828 case NO_SSID_HIDING: 5829 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use"); 5830 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5831 NL80211_HIDDEN_SSID_NOT_IN_USE); 5832 break; 5833 case HIDDEN_SSID_ZERO_LEN: 5834 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len"); 5835 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5836 NL80211_HIDDEN_SSID_ZERO_LEN); 5837 break; 5838 case HIDDEN_SSID_ZERO_CONTENTS: 5839 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents"); 5840 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5841 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5842 break; 5843 } 5844 wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy); 5845 if (params->privacy) 5846 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5847 wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs); 5848 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5849 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5850 /* Leave out the attribute */ 5851 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5852 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5853 NL80211_AUTHTYPE_SHARED_KEY); 5854 else 5855 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5856 NL80211_AUTHTYPE_OPEN_SYSTEM); 5857 5858 wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version); 5859 ver = 0; 5860 if (params->wpa_version & WPA_PROTO_WPA) 5861 ver |= NL80211_WPA_VERSION_1; 5862 if (params->wpa_version & WPA_PROTO_RSN) 5863 ver |= NL80211_WPA_VERSION_2; 5864 if (ver) 5865 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5866 5867 wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x", 5868 params->key_mgmt_suites); 5869 num_suites = 0; 5870 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5871 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5872 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5873 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5874 if (num_suites) { 5875 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5876 num_suites * sizeof(u32), suites); 5877 } 5878 5879 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5880 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5881 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5882 5883 wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x", 5884 params->pairwise_ciphers); 5885 num_suites = 0; 5886 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5887 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5888 if (params->pairwise_ciphers & WPA_CIPHER_GCMP) 5889 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; 5890 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5891 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5892 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5893 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5894 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5895 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5896 if (num_suites) { 5897 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5898 num_suites * sizeof(u32), suites); 5899 } 5900 5901 wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x", 5902 params->group_cipher); 5903 switch (params->group_cipher) { 5904 case WPA_CIPHER_CCMP: 5905 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5906 WLAN_CIPHER_SUITE_CCMP); 5907 break; 5908 case WPA_CIPHER_GCMP: 5909 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5910 WLAN_CIPHER_SUITE_GCMP); 5911 break; 5912 case WPA_CIPHER_TKIP: 5913 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5914 WLAN_CIPHER_SUITE_TKIP); 5915 break; 5916 case WPA_CIPHER_WEP104: 5917 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5918 WLAN_CIPHER_SUITE_WEP104); 5919 break; 5920 case WPA_CIPHER_WEP40: 5921 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5922 WLAN_CIPHER_SUITE_WEP40); 5923 break; 5924 } 5925 5926 if (params->beacon_ies) { 5927 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies", 5928 params->beacon_ies); 5929 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5930 wpabuf_head(params->beacon_ies)); 5931 } 5932 if (params->proberesp_ies) { 5933 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies", 5934 params->proberesp_ies); 5935 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5936 wpabuf_len(params->proberesp_ies), 5937 wpabuf_head(params->proberesp_ies)); 5938 } 5939 if (params->assocresp_ies) { 5940 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies", 5941 params->assocresp_ies); 5942 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5943 wpabuf_len(params->assocresp_ies), 5944 wpabuf_head(params->assocresp_ies)); 5945 } 5946 5947 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5948 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d", 5949 params->ap_max_inactivity); 5950 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5951 params->ap_max_inactivity); 5952 } 5953 5954 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5955 if (ret) { 5956 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5957 ret, strerror(-ret)); 5958 } else { 5959 bss->beacon_set = 1; 5960 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5961 params->short_slot_time, params->ht_opmode, 5962 params->isolate, params->basic_rates); 5963 } 5964 return ret; 5965 nla_put_failure: 5966 nlmsg_free(msg); 5967 return -ENOBUFS; 5968} 5969 5970 5971static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5972 struct hostapd_freq_params *freq) 5973{ 5974 struct wpa_driver_nl80211_data *drv = bss->drv; 5975 struct nl_msg *msg; 5976 int ret; 5977 5978 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d," 5979 " bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 5980 freq->freq, freq->ht_enabled, freq->vht_enabled, 5981 freq->bandwidth, freq->center_freq1, freq->center_freq2); 5982 msg = nlmsg_alloc(); 5983 if (!msg) 5984 return -1; 5985 5986 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5987 5988 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5989 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq); 5990 if (freq->vht_enabled) { 5991 switch (freq->bandwidth) { 5992 case 20: 5993 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5994 NL80211_CHAN_WIDTH_20); 5995 break; 5996 case 40: 5997 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5998 NL80211_CHAN_WIDTH_40); 5999 break; 6000 case 80: 6001 if (freq->center_freq2) 6002 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6003 NL80211_CHAN_WIDTH_80P80); 6004 else 6005 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6006 NL80211_CHAN_WIDTH_80); 6007 break; 6008 case 160: 6009 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6010 NL80211_CHAN_WIDTH_160); 6011 break; 6012 default: 6013 return -1; 6014 } 6015 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1); 6016 if (freq->center_freq2) 6017 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2, 6018 freq->center_freq2); 6019 } else if (freq->ht_enabled) { 6020 switch (freq->sec_channel_offset) { 6021 case -1: 6022 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6023 NL80211_CHAN_HT40MINUS); 6024 break; 6025 case 1: 6026 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6027 NL80211_CHAN_HT40PLUS); 6028 break; 6029 default: 6030 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6031 NL80211_CHAN_HT20); 6032 break; 6033 } 6034 } 6035 6036 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6037 msg = NULL; 6038 if (ret == 0) { 6039 bss->freq = freq->freq; 6040 return 0; 6041 } 6042 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 6043 "%d (%s)", freq->freq, ret, strerror(-ret)); 6044nla_put_failure: 6045 nlmsg_free(msg); 6046 return -1; 6047} 6048 6049 6050static u32 sta_flags_nl80211(int flags) 6051{ 6052 u32 f = 0; 6053 6054 if (flags & WPA_STA_AUTHORIZED) 6055 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 6056 if (flags & WPA_STA_WMM) 6057 f |= BIT(NL80211_STA_FLAG_WME); 6058 if (flags & WPA_STA_SHORT_PREAMBLE) 6059 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 6060 if (flags & WPA_STA_MFP) 6061 f |= BIT(NL80211_STA_FLAG_MFP); 6062 if (flags & WPA_STA_TDLS_PEER) 6063 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 6064 6065 return f; 6066} 6067 6068 6069static int wpa_driver_nl80211_sta_add(void *priv, 6070 struct hostapd_sta_add_params *params) 6071{ 6072 struct i802_bss *bss = priv; 6073 struct wpa_driver_nl80211_data *drv = bss->drv; 6074 struct nl_msg *msg, *wme = NULL; 6075 struct nl80211_sta_flag_update upd; 6076 int ret = -ENOBUFS; 6077 6078 if ((params->flags & WPA_STA_TDLS_PEER) && 6079 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 6080 return -EOPNOTSUPP; 6081 6082 msg = nlmsg_alloc(); 6083 if (!msg) 6084 return -ENOMEM; 6085 6086 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR, 6087 params->set ? "Set" : "Add", MAC2STR(params->addr)); 6088 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 6089 NL80211_CMD_NEW_STATION); 6090 6091 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6092 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 6093 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 6094 params->supp_rates); 6095 wpa_hexdump(MSG_DEBUG, " * supported rates", params->supp_rates, 6096 params->supp_rates_len); 6097 if (!params->set) { 6098 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 6099 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 6100 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 6101 params->listen_interval); 6102 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 6103 params->listen_interval); 6104 } 6105 if (params->ht_capabilities) { 6106 wpa_hexdump(MSG_DEBUG, " * ht_capabilities", 6107 (u8 *) params->ht_capabilities, 6108 sizeof(*params->ht_capabilities)); 6109 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 6110 sizeof(*params->ht_capabilities), 6111 params->ht_capabilities); 6112 } 6113 6114 if (params->vht_capabilities) { 6115 wpa_hexdump(MSG_DEBUG, " * vht_capabilities", 6116 (u8 *) params->vht_capabilities, 6117 sizeof(*params->vht_capabilities)); 6118 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, 6119 sizeof(*params->vht_capabilities), 6120 params->vht_capabilities); 6121 } 6122 6123 wpa_printf(MSG_DEBUG, " * capability=0x%x", params->capability); 6124 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability); 6125 6126 if (params->ext_capab) { 6127 wpa_hexdump(MSG_DEBUG, " * ext_capab", 6128 params->ext_capab, params->ext_capab_len); 6129 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY, 6130 params->ext_capab_len, params->ext_capab); 6131 } 6132 6133 os_memset(&upd, 0, sizeof(upd)); 6134 upd.mask = sta_flags_nl80211(params->flags); 6135 upd.set = upd.mask; 6136 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x", 6137 upd.set, upd.mask); 6138 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6139 6140 if (params->flags & WPA_STA_WMM) { 6141 wme = nlmsg_alloc(); 6142 if (!wme) 6143 goto nla_put_failure; 6144 6145 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo); 6146 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES, 6147 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 6148 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP, 6149 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) & 6150 WMM_QOSINFO_STA_SP_MASK); 6151 if (nla_put_nested(msg, NL80211_ATTR_STA_WME, wme) < 0) 6152 goto nla_put_failure; 6153 } 6154 6155 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6156 msg = NULL; 6157 if (ret) 6158 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 6159 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 6160 strerror(-ret)); 6161 if (ret == -EEXIST) 6162 ret = 0; 6163 nla_put_failure: 6164 nlmsg_free(wme); 6165 nlmsg_free(msg); 6166 return ret; 6167} 6168 6169 6170static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr) 6171{ 6172 struct wpa_driver_nl80211_data *drv = bss->drv; 6173 struct nl_msg *msg; 6174 int ret; 6175 6176 msg = nlmsg_alloc(); 6177 if (!msg) 6178 return -ENOMEM; 6179 6180 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 6181 6182 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6183 if_nametoindex(bss->ifname)); 6184 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6185 6186 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6187 if (ret == -ENOENT) 6188 return 0; 6189 return ret; 6190 nla_put_failure: 6191 nlmsg_free(msg); 6192 return -ENOBUFS; 6193} 6194 6195 6196static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 6197 int ifidx) 6198{ 6199 struct nl_msg *msg; 6200 6201 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 6202 6203 /* stop listening for EAPOL on this interface */ 6204 del_ifidx(drv, ifidx); 6205 6206 msg = nlmsg_alloc(); 6207 if (!msg) 6208 goto nla_put_failure; 6209 6210 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 6211 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 6212 6213 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 6214 return; 6215 msg = NULL; 6216 nla_put_failure: 6217 nlmsg_free(msg); 6218 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 6219} 6220 6221 6222static const char * nl80211_iftype_str(enum nl80211_iftype mode) 6223{ 6224 switch (mode) { 6225 case NL80211_IFTYPE_ADHOC: 6226 return "ADHOC"; 6227 case NL80211_IFTYPE_STATION: 6228 return "STATION"; 6229 case NL80211_IFTYPE_AP: 6230 return "AP"; 6231 case NL80211_IFTYPE_MONITOR: 6232 return "MONITOR"; 6233 case NL80211_IFTYPE_P2P_CLIENT: 6234 return "P2P_CLIENT"; 6235 case NL80211_IFTYPE_P2P_GO: 6236 return "P2P_GO"; 6237 default: 6238 return "unknown"; 6239 } 6240} 6241 6242 6243static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 6244 const char *ifname, 6245 enum nl80211_iftype iftype, 6246 const u8 *addr, int wds) 6247{ 6248 struct nl_msg *msg, *flags = NULL; 6249 int ifidx; 6250 int ret = -ENOBUFS; 6251 6252 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 6253 iftype, nl80211_iftype_str(iftype)); 6254 6255 msg = nlmsg_alloc(); 6256 if (!msg) 6257 return -1; 6258 6259 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 6260 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6261 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 6262 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 6263 6264 if (iftype == NL80211_IFTYPE_MONITOR) { 6265 int err; 6266 6267 flags = nlmsg_alloc(); 6268 if (!flags) 6269 goto nla_put_failure; 6270 6271 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); 6272 6273 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); 6274 6275 nlmsg_free(flags); 6276 6277 if (err) 6278 goto nla_put_failure; 6279 } else if (wds) { 6280 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 6281 } 6282 6283 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6284 msg = NULL; 6285 if (ret) { 6286 nla_put_failure: 6287 nlmsg_free(msg); 6288 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 6289 ifname, ret, strerror(-ret)); 6290 return ret; 6291 } 6292 6293 ifidx = if_nametoindex(ifname); 6294 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 6295 ifname, ifidx); 6296 6297 if (ifidx <= 0) 6298 return -1; 6299 6300 /* start listening for EAPOL on this interface */ 6301 add_ifidx(drv, ifidx); 6302 6303 if (addr && iftype != NL80211_IFTYPE_MONITOR && 6304 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 6305 nl80211_remove_iface(drv, ifidx); 6306 return -1; 6307 } 6308 6309 return ifidx; 6310} 6311 6312 6313static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 6314 const char *ifname, enum nl80211_iftype iftype, 6315 const u8 *addr, int wds) 6316{ 6317 int ret; 6318 6319 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 6320 6321 /* if error occurred and interface exists already */ 6322 if (ret == -ENFILE && if_nametoindex(ifname)) { 6323 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 6324 6325 /* Try to remove the interface that was already there. */ 6326 nl80211_remove_iface(drv, if_nametoindex(ifname)); 6327 6328 /* Try to create the interface again */ 6329 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 6330 wds); 6331 } 6332 6333 if (ret >= 0 && is_p2p_interface(iftype)) 6334 nl80211_disable_11b_rates(drv, ret, 1); 6335 6336 return ret; 6337} 6338 6339 6340static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 6341{ 6342 struct ieee80211_hdr *hdr; 6343 u16 fc; 6344 union wpa_event_data event; 6345 6346 hdr = (struct ieee80211_hdr *) buf; 6347 fc = le_to_host16(hdr->frame_control); 6348 6349 os_memset(&event, 0, sizeof(event)); 6350 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 6351 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 6352 event.tx_status.dst = hdr->addr1; 6353 event.tx_status.data = buf; 6354 event.tx_status.data_len = len; 6355 event.tx_status.ack = ok; 6356 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 6357} 6358 6359 6360static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 6361 u8 *buf, size_t len) 6362{ 6363 struct ieee80211_hdr *hdr = (void *)buf; 6364 u16 fc; 6365 union wpa_event_data event; 6366 6367 if (len < sizeof(*hdr)) 6368 return; 6369 6370 fc = le_to_host16(hdr->frame_control); 6371 6372 os_memset(&event, 0, sizeof(event)); 6373 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 6374 event.rx_from_unknown.addr = hdr->addr2; 6375 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 6376 (WLAN_FC_FROMDS | WLAN_FC_TODS); 6377 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 6378} 6379 6380 6381static void handle_frame(struct wpa_driver_nl80211_data *drv, 6382 u8 *buf, size_t len, int datarate, int ssi_signal) 6383{ 6384 struct ieee80211_hdr *hdr; 6385 u16 fc; 6386 union wpa_event_data event; 6387 6388 hdr = (struct ieee80211_hdr *) buf; 6389 fc = le_to_host16(hdr->frame_control); 6390 6391 switch (WLAN_FC_GET_TYPE(fc)) { 6392 case WLAN_FC_TYPE_MGMT: 6393 os_memset(&event, 0, sizeof(event)); 6394 event.rx_mgmt.frame = buf; 6395 event.rx_mgmt.frame_len = len; 6396 event.rx_mgmt.datarate = datarate; 6397 event.rx_mgmt.ssi_signal = ssi_signal; 6398 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 6399 break; 6400 case WLAN_FC_TYPE_CTRL: 6401 /* can only get here with PS-Poll frames */ 6402 wpa_printf(MSG_DEBUG, "CTRL"); 6403 from_unknown_sta(drv, buf, len); 6404 break; 6405 case WLAN_FC_TYPE_DATA: 6406 from_unknown_sta(drv, buf, len); 6407 break; 6408 } 6409} 6410 6411 6412static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 6413{ 6414 struct wpa_driver_nl80211_data *drv = eloop_ctx; 6415 int len; 6416 unsigned char buf[3000]; 6417 struct ieee80211_radiotap_iterator iter; 6418 int ret; 6419 int datarate = 0, ssi_signal = 0; 6420 int injected = 0, failed = 0, rxflags = 0; 6421 6422 len = recv(sock, buf, sizeof(buf), 0); 6423 if (len < 0) { 6424 perror("recv"); 6425 return; 6426 } 6427 6428 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 6429 printf("received invalid radiotap frame\n"); 6430 return; 6431 } 6432 6433 while (1) { 6434 ret = ieee80211_radiotap_iterator_next(&iter); 6435 if (ret == -ENOENT) 6436 break; 6437 if (ret) { 6438 printf("received invalid radiotap frame (%d)\n", ret); 6439 return; 6440 } 6441 switch (iter.this_arg_index) { 6442 case IEEE80211_RADIOTAP_FLAGS: 6443 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 6444 len -= 4; 6445 break; 6446 case IEEE80211_RADIOTAP_RX_FLAGS: 6447 rxflags = 1; 6448 break; 6449 case IEEE80211_RADIOTAP_TX_FLAGS: 6450 injected = 1; 6451 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 6452 IEEE80211_RADIOTAP_F_TX_FAIL; 6453 break; 6454 case IEEE80211_RADIOTAP_DATA_RETRIES: 6455 break; 6456 case IEEE80211_RADIOTAP_CHANNEL: 6457 /* TODO: convert from freq/flags to channel number */ 6458 break; 6459 case IEEE80211_RADIOTAP_RATE: 6460 datarate = *iter.this_arg * 5; 6461 break; 6462 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 6463 ssi_signal = (s8) *iter.this_arg; 6464 break; 6465 } 6466 } 6467 6468 if (rxflags && injected) 6469 return; 6470 6471 if (!injected) 6472 handle_frame(drv, buf + iter.max_length, 6473 len - iter.max_length, datarate, ssi_signal); 6474 else 6475 handle_tx_callback(drv->ctx, buf + iter.max_length, 6476 len - iter.max_length, !failed); 6477} 6478 6479 6480/* 6481 * we post-process the filter code later and rewrite 6482 * this to the offset to the last instruction 6483 */ 6484#define PASS 0xFF 6485#define FAIL 0xFE 6486 6487static struct sock_filter msock_filter_insns[] = { 6488 /* 6489 * do a little-endian load of the radiotap length field 6490 */ 6491 /* load lower byte into A */ 6492 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 6493 /* put it into X (== index register) */ 6494 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6495 /* load upper byte into A */ 6496 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 6497 /* left-shift it by 8 */ 6498 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 6499 /* or with X */ 6500 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 6501 /* put result into X */ 6502 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6503 6504 /* 6505 * Allow management frames through, this also gives us those 6506 * management frames that we sent ourselves with status 6507 */ 6508 /* load the lower byte of the IEEE 802.11 frame control field */ 6509 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6510 /* mask off frame type and version */ 6511 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6512 /* accept frame if it's both 0, fall through otherwise */ 6513 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6514 6515 /* 6516 * TODO: add a bit to radiotap RX flags that indicates 6517 * that the sending station is not associated, then 6518 * add a filter here that filters on our DA and that flag 6519 * to allow us to deauth frames to that bad station. 6520 * 6521 * For now allow all To DS data frames through. 6522 */ 6523 /* load the IEEE 802.11 frame control field */ 6524 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6525 /* mask off frame type, version and DS status */ 6526 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6527 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6528 */ 6529 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6530 6531#if 0 6532 /* 6533 * drop non-data frames 6534 */ 6535 /* load the lower byte of the frame control field */ 6536 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6537 /* mask off QoS bit */ 6538 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6539 /* drop non-data frames */ 6540 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6541#endif 6542 /* load the upper byte of the frame control field */ 6543 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6544 /* mask off toDS/fromDS */ 6545 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6546 /* accept WDS frames */ 6547 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6548 6549 /* 6550 * add header length to index 6551 */ 6552 /* load the lower byte of the frame control field */ 6553 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6554 /* mask off QoS bit */ 6555 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6556 /* right shift it by 6 to give 0 or 2 */ 6557 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6558 /* add data frame header length */ 6559 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6560 /* add index, was start of 802.11 header */ 6561 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6562 /* move to index, now start of LL header */ 6563 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6564 6565 /* 6566 * Accept empty data frames, we use those for 6567 * polling activity. 6568 */ 6569 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6570 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6571 6572 /* 6573 * Accept EAPOL frames 6574 */ 6575 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6576 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6577 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6578 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6579 6580 /* keep these last two statements or change the code below */ 6581 /* return 0 == "DROP" */ 6582 BPF_STMT(BPF_RET | BPF_K, 0), 6583 /* return ~0 == "keep all" */ 6584 BPF_STMT(BPF_RET | BPF_K, ~0), 6585}; 6586 6587static struct sock_fprog msock_filter = { 6588 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6589 .filter = msock_filter_insns, 6590}; 6591 6592 6593static int add_monitor_filter(int s) 6594{ 6595 int idx; 6596 6597 /* rewrite all PASS/FAIL jump offsets */ 6598 for (idx = 0; idx < msock_filter.len; idx++) { 6599 struct sock_filter *insn = &msock_filter_insns[idx]; 6600 6601 if (BPF_CLASS(insn->code) == BPF_JMP) { 6602 if (insn->code == (BPF_JMP|BPF_JA)) { 6603 if (insn->k == PASS) 6604 insn->k = msock_filter.len - idx - 2; 6605 else if (insn->k == FAIL) 6606 insn->k = msock_filter.len - idx - 3; 6607 } 6608 6609 if (insn->jt == PASS) 6610 insn->jt = msock_filter.len - idx - 2; 6611 else if (insn->jt == FAIL) 6612 insn->jt = msock_filter.len - idx - 3; 6613 6614 if (insn->jf == PASS) 6615 insn->jf = msock_filter.len - idx - 2; 6616 else if (insn->jf == FAIL) 6617 insn->jf = msock_filter.len - idx - 3; 6618 } 6619 } 6620 6621 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6622 &msock_filter, sizeof(msock_filter))) { 6623 perror("SO_ATTACH_FILTER"); 6624 return -1; 6625 } 6626 6627 return 0; 6628} 6629 6630 6631static void nl80211_remove_monitor_interface( 6632 struct wpa_driver_nl80211_data *drv) 6633{ 6634 drv->monitor_refcount--; 6635 if (drv->monitor_refcount > 0) 6636 return; 6637 6638 if (drv->monitor_ifidx >= 0) { 6639 nl80211_remove_iface(drv, drv->monitor_ifidx); 6640 drv->monitor_ifidx = -1; 6641 } 6642 if (drv->monitor_sock >= 0) { 6643 eloop_unregister_read_sock(drv->monitor_sock); 6644 close(drv->monitor_sock); 6645 drv->monitor_sock = -1; 6646 } 6647} 6648 6649 6650static int 6651nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6652{ 6653 char buf[IFNAMSIZ]; 6654 struct sockaddr_ll ll; 6655 int optval; 6656 socklen_t optlen; 6657 6658 if (drv->monitor_ifidx >= 0) { 6659 drv->monitor_refcount++; 6660 return 0; 6661 } 6662 6663 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6664 /* 6665 * P2P interface name is of the format p2p-%s-%d. For monitor 6666 * interface name corresponding to P2P GO, replace "p2p-" with 6667 * "mon-" to retain the same interface name length and to 6668 * indicate that it is a monitor interface. 6669 */ 6670 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6671 } else { 6672 /* Non-P2P interface with AP functionality. */ 6673 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6674 } 6675 6676 buf[IFNAMSIZ - 1] = '\0'; 6677 6678 drv->monitor_ifidx = 6679 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6680 0); 6681 6682 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6683 /* 6684 * This is backward compatibility for a few versions of 6685 * the kernel only that didn't advertise the right 6686 * attributes for the only driver that then supported 6687 * AP mode w/o monitor -- ath6kl. 6688 */ 6689 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6690 "monitor interface type - try to run without it"); 6691 drv->device_ap_sme = 1; 6692 } 6693 6694 if (drv->monitor_ifidx < 0) 6695 return -1; 6696 6697 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6698 goto error; 6699 6700 memset(&ll, 0, sizeof(ll)); 6701 ll.sll_family = AF_PACKET; 6702 ll.sll_ifindex = drv->monitor_ifidx; 6703 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6704 if (drv->monitor_sock < 0) { 6705 perror("socket[PF_PACKET,SOCK_RAW]"); 6706 goto error; 6707 } 6708 6709 if (add_monitor_filter(drv->monitor_sock)) { 6710 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6711 "interface; do filtering in user space"); 6712 /* This works, but will cost in performance. */ 6713 } 6714 6715 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6716 perror("monitor socket bind"); 6717 goto error; 6718 } 6719 6720 optlen = sizeof(optval); 6721 optval = 20; 6722 if (setsockopt 6723 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6724 perror("Failed to set socket priority"); 6725 goto error; 6726 } 6727 6728 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6729 drv, NULL)) { 6730 printf("Could not register monitor read socket\n"); 6731 goto error; 6732 } 6733 6734 return 0; 6735 error: 6736 nl80211_remove_monitor_interface(drv); 6737 return -1; 6738} 6739 6740 6741static int nl80211_setup_ap(struct i802_bss *bss) 6742{ 6743 struct wpa_driver_nl80211_data *drv = bss->drv; 6744 6745 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6746 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6747 6748 /* 6749 * Disable Probe Request reporting unless we need it in this way for 6750 * devices that include the AP SME, in the other case (unless using 6751 * monitor iface) we'll get it through the nl_mgmt socket instead. 6752 */ 6753 if (!drv->device_ap_sme) 6754 wpa_driver_nl80211_probe_req_report(bss, 0); 6755 6756 if (!drv->device_ap_sme && !drv->use_monitor) 6757 if (nl80211_mgmt_subscribe_ap(bss)) 6758 return -1; 6759 6760 if (drv->device_ap_sme && !drv->use_monitor) 6761 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6762 return -1; 6763 6764 if (!drv->device_ap_sme && drv->use_monitor && 6765 nl80211_create_monitor_interface(drv) && 6766 !drv->device_ap_sme) 6767 return -1; 6768 6769#ifdef ANDROID_P2P 6770 if (drv->device_ap_sme && drv->use_monitor) 6771 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6772 return -1; 6773 6774 if (drv->use_monitor && 6775 nl80211_create_monitor_interface(drv)) 6776 return -1; 6777#endif 6778 6779 if (drv->device_ap_sme && 6780 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6781 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6782 "Probe Request frame reporting in AP mode"); 6783 /* Try to survive without this */ 6784 } 6785 6786 return 0; 6787} 6788 6789 6790static void nl80211_teardown_ap(struct i802_bss *bss) 6791{ 6792 struct wpa_driver_nl80211_data *drv = bss->drv; 6793 6794 if (drv->device_ap_sme) { 6795 wpa_driver_nl80211_probe_req_report(bss, 0); 6796 if (!drv->use_monitor) 6797 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6798 } else if (drv->use_monitor) 6799 nl80211_remove_monitor_interface(drv); 6800 else 6801 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6802 6803 bss->beacon_set = 0; 6804} 6805 6806 6807static int nl80211_send_eapol_data(struct i802_bss *bss, 6808 const u8 *addr, const u8 *data, 6809 size_t data_len) 6810{ 6811 struct sockaddr_ll ll; 6812 int ret; 6813 6814 if (bss->drv->eapol_tx_sock < 0) { 6815 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6816 return -1; 6817 } 6818 6819 os_memset(&ll, 0, sizeof(ll)); 6820 ll.sll_family = AF_PACKET; 6821 ll.sll_ifindex = bss->ifindex; 6822 ll.sll_protocol = htons(ETH_P_PAE); 6823 ll.sll_halen = ETH_ALEN; 6824 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6825 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6826 (struct sockaddr *) &ll, sizeof(ll)); 6827 if (ret < 0) 6828 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6829 strerror(errno)); 6830 6831 return ret; 6832} 6833 6834 6835static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6836 6837static int wpa_driver_nl80211_hapd_send_eapol( 6838 void *priv, const u8 *addr, const u8 *data, 6839 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6840{ 6841 struct i802_bss *bss = priv; 6842 struct wpa_driver_nl80211_data *drv = bss->drv; 6843 struct ieee80211_hdr *hdr; 6844 size_t len; 6845 u8 *pos; 6846 int res; 6847 int qos = flags & WPA_STA_WMM; 6848#ifndef ANDROID_P2P 6849 if (drv->device_ap_sme || !drv->use_monitor) 6850#else 6851 if (drv->device_ap_sme && !drv->use_monitor) 6852#endif 6853 return nl80211_send_eapol_data(bss, addr, data, data_len); 6854 6855 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6856 data_len; 6857 hdr = os_zalloc(len); 6858 if (hdr == NULL) { 6859 printf("malloc() failed for i802_send_data(len=%lu)\n", 6860 (unsigned long) len); 6861 return -1; 6862 } 6863 6864 hdr->frame_control = 6865 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6866 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6867 if (encrypt) 6868 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6869 if (qos) { 6870 hdr->frame_control |= 6871 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6872 } 6873 6874 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6875 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6876 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6877 pos = (u8 *) (hdr + 1); 6878 6879 if (qos) { 6880 /* Set highest priority in QoS header */ 6881 pos[0] = 7; 6882 pos[1] = 0; 6883 pos += 2; 6884 } 6885 6886 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6887 pos += sizeof(rfc1042_header); 6888 WPA_PUT_BE16(pos, ETH_P_PAE); 6889 pos += 2; 6890 memcpy(pos, data, data_len); 6891 6892 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6893 0, 0, 0, 0); 6894 if (res < 0) { 6895 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6896 "failed: %d (%s)", 6897 (unsigned long) len, errno, strerror(errno)); 6898 } 6899 os_free(hdr); 6900 6901 return res; 6902} 6903 6904 6905static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6906 int total_flags, 6907 int flags_or, int flags_and) 6908{ 6909 struct i802_bss *bss = priv; 6910 struct wpa_driver_nl80211_data *drv = bss->drv; 6911 struct nl_msg *msg, *flags = NULL; 6912 struct nl80211_sta_flag_update upd; 6913 6914 msg = nlmsg_alloc(); 6915 if (!msg) 6916 return -ENOMEM; 6917 6918 flags = nlmsg_alloc(); 6919 if (!flags) { 6920 nlmsg_free(msg); 6921 return -ENOMEM; 6922 } 6923 6924 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6925 6926 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6927 if_nametoindex(bss->ifname)); 6928 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6929 6930 /* 6931 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6932 * can be removed eventually. 6933 */ 6934 if (total_flags & WPA_STA_AUTHORIZED) 6935 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED); 6936 6937 if (total_flags & WPA_STA_WMM) 6938 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME); 6939 6940 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6941 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE); 6942 6943 if (total_flags & WPA_STA_MFP) 6944 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP); 6945 6946 if (total_flags & WPA_STA_TDLS_PEER) 6947 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER); 6948 6949 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags)) 6950 goto nla_put_failure; 6951 6952 os_memset(&upd, 0, sizeof(upd)); 6953 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6954 upd.set = sta_flags_nl80211(flags_or); 6955 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6956 6957 nlmsg_free(flags); 6958 6959 return send_and_recv_msgs(drv, msg, NULL, NULL); 6960 nla_put_failure: 6961 nlmsg_free(msg); 6962 nlmsg_free(flags); 6963 return -ENOBUFS; 6964} 6965 6966 6967static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6968 struct wpa_driver_associate_params *params) 6969{ 6970 enum nl80211_iftype nlmode, old_mode; 6971 struct hostapd_freq_params freq = { 6972 .freq = params->freq, 6973 }; 6974 6975 if (params->p2p) { 6976 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6977 "group (GO)"); 6978 nlmode = NL80211_IFTYPE_P2P_GO; 6979 } else 6980 nlmode = NL80211_IFTYPE_AP; 6981 6982 old_mode = drv->nlmode; 6983 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode)) { 6984 nl80211_remove_monitor_interface(drv); 6985 return -1; 6986 } 6987 6988 if (wpa_driver_nl80211_set_freq(&drv->first_bss, &freq)) { 6989 if (old_mode != nlmode) 6990 wpa_driver_nl80211_set_mode(&drv->first_bss, old_mode); 6991 nl80211_remove_monitor_interface(drv); 6992 return -1; 6993 } 6994 6995 return 0; 6996} 6997 6998 6999static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 7000{ 7001 struct nl_msg *msg; 7002 int ret = -1; 7003 7004 msg = nlmsg_alloc(); 7005 if (!msg) 7006 return -1; 7007 7008 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 7009 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7010 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7011 msg = NULL; 7012 if (ret) { 7013 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 7014 "(%s)", ret, strerror(-ret)); 7015 goto nla_put_failure; 7016 } 7017 7018 ret = 0; 7019 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 7020 7021nla_put_failure: 7022 nlmsg_free(msg); 7023 return ret; 7024} 7025 7026 7027static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 7028 struct wpa_driver_associate_params *params) 7029{ 7030 struct nl_msg *msg; 7031 int ret = -1; 7032 int count = 0; 7033 7034 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 7035 7036 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 7037 NL80211_IFTYPE_ADHOC)) { 7038 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 7039 "IBSS mode"); 7040 return -1; 7041 } 7042 7043retry: 7044 msg = nlmsg_alloc(); 7045 if (!msg) 7046 return -1; 7047 7048 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 7049 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7050 7051 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 7052 goto nla_put_failure; 7053 7054 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7055 params->ssid, params->ssid_len); 7056 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7057 params->ssid); 7058 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7059 drv->ssid_len = params->ssid_len; 7060 7061 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7062 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7063 7064 ret = nl80211_set_conn_keys(params, msg); 7065 if (ret) 7066 goto nla_put_failure; 7067 7068 if (params->bssid && params->fixed_bssid) { 7069 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 7070 MAC2STR(params->bssid)); 7071 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7072 } 7073 7074 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7075 params->key_mgmt_suite == KEY_MGMT_PSK || 7076 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 7077 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 7078 wpa_printf(MSG_DEBUG, " * control port"); 7079 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7080 } 7081 7082 if (params->wpa_ie) { 7083 wpa_hexdump(MSG_DEBUG, 7084 " * Extra IEs for Beacon/Probe Response frames", 7085 params->wpa_ie, params->wpa_ie_len); 7086 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7087 params->wpa_ie); 7088 } 7089 7090 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7091 msg = NULL; 7092 if (ret) { 7093 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 7094 ret, strerror(-ret)); 7095 count++; 7096 if (ret == -EALREADY && count == 1) { 7097 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 7098 "forced leave"); 7099 nl80211_leave_ibss(drv); 7100 nlmsg_free(msg); 7101 goto retry; 7102 } 7103 7104 goto nla_put_failure; 7105 } 7106 ret = 0; 7107 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 7108 7109nla_put_failure: 7110 nlmsg_free(msg); 7111 return ret; 7112} 7113 7114 7115static int wpa_driver_nl80211_try_connect( 7116 struct wpa_driver_nl80211_data *drv, 7117 struct wpa_driver_associate_params *params) 7118{ 7119 struct nl_msg *msg; 7120 enum nl80211_auth_type type; 7121 int ret = 0; 7122 int algs; 7123 7124 msg = nlmsg_alloc(); 7125 if (!msg) 7126 return -1; 7127 7128 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 7129 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 7130 7131 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7132 if (params->bssid) { 7133 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7134 MAC2STR(params->bssid)); 7135 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7136 } 7137 if (params->freq) { 7138 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7139 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7140 } 7141 if (params->bg_scan_period >= 0) { 7142 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7143 params->bg_scan_period); 7144 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7145 params->bg_scan_period); 7146 } 7147 if (params->ssid) { 7148 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7149 params->ssid, params->ssid_len); 7150 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7151 params->ssid); 7152 if (params->ssid_len > sizeof(drv->ssid)) 7153 goto nla_put_failure; 7154 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7155 drv->ssid_len = params->ssid_len; 7156 } 7157 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7158 if (params->wpa_ie) 7159 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7160 params->wpa_ie); 7161 7162 algs = 0; 7163 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7164 algs++; 7165 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7166 algs++; 7167 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7168 algs++; 7169 if (algs > 1) { 7170 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 7171 "selection"); 7172 goto skip_auth_type; 7173 } 7174 7175 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7176 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 7177 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7178 type = NL80211_AUTHTYPE_SHARED_KEY; 7179 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7180 type = NL80211_AUTHTYPE_NETWORK_EAP; 7181 else if (params->auth_alg & WPA_AUTH_ALG_FT) 7182 type = NL80211_AUTHTYPE_FT; 7183 else 7184 goto nla_put_failure; 7185 7186 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 7187 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 7188 7189skip_auth_type: 7190 if (params->wpa_proto) { 7191 enum nl80211_wpa_versions ver = 0; 7192 7193 if (params->wpa_proto & WPA_PROTO_WPA) 7194 ver |= NL80211_WPA_VERSION_1; 7195 if (params->wpa_proto & WPA_PROTO_RSN) 7196 ver |= NL80211_WPA_VERSION_2; 7197 7198 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 7199 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 7200 } 7201 7202 if (params->pairwise_suite != CIPHER_NONE) { 7203 int cipher; 7204 7205 switch (params->pairwise_suite) { 7206 case CIPHER_SMS4: 7207 cipher = WLAN_CIPHER_SUITE_SMS4; 7208 break; 7209 case CIPHER_WEP40: 7210 cipher = WLAN_CIPHER_SUITE_WEP40; 7211 break; 7212 case CIPHER_WEP104: 7213 cipher = WLAN_CIPHER_SUITE_WEP104; 7214 break; 7215 case CIPHER_CCMP: 7216 cipher = WLAN_CIPHER_SUITE_CCMP; 7217 break; 7218 case CIPHER_GCMP: 7219 cipher = WLAN_CIPHER_SUITE_GCMP; 7220 break; 7221 case CIPHER_TKIP: 7222 default: 7223 cipher = WLAN_CIPHER_SUITE_TKIP; 7224 break; 7225 } 7226 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7227 } 7228 7229 if (params->group_suite != CIPHER_NONE) { 7230 int cipher; 7231 7232 switch (params->group_suite) { 7233 case CIPHER_SMS4: 7234 cipher = WLAN_CIPHER_SUITE_SMS4; 7235 break; 7236 case CIPHER_WEP40: 7237 cipher = WLAN_CIPHER_SUITE_WEP40; 7238 break; 7239 case CIPHER_WEP104: 7240 cipher = WLAN_CIPHER_SUITE_WEP104; 7241 break; 7242 case CIPHER_CCMP: 7243 cipher = WLAN_CIPHER_SUITE_CCMP; 7244 break; 7245 case CIPHER_GCMP: 7246 cipher = WLAN_CIPHER_SUITE_GCMP; 7247 break; 7248 case CIPHER_TKIP: 7249 default: 7250 cipher = WLAN_CIPHER_SUITE_TKIP; 7251 break; 7252 } 7253 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7254 } 7255 7256 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7257 params->key_mgmt_suite == KEY_MGMT_PSK || 7258 params->key_mgmt_suite == KEY_MGMT_FT_802_1X || 7259 params->key_mgmt_suite == KEY_MGMT_FT_PSK || 7260 params->key_mgmt_suite == KEY_MGMT_CCKM) { 7261 int mgmt = WLAN_AKM_SUITE_PSK; 7262 7263 switch (params->key_mgmt_suite) { 7264 case KEY_MGMT_CCKM: 7265 mgmt = WLAN_AKM_SUITE_CCKM; 7266 break; 7267 case KEY_MGMT_802_1X: 7268 mgmt = WLAN_AKM_SUITE_8021X; 7269 break; 7270 case KEY_MGMT_FT_802_1X: 7271 mgmt = WLAN_AKM_SUITE_FT_8021X; 7272 break; 7273 case KEY_MGMT_FT_PSK: 7274 mgmt = WLAN_AKM_SUITE_FT_PSK; 7275 break; 7276 case KEY_MGMT_PSK: 7277 default: 7278 mgmt = WLAN_AKM_SUITE_PSK; 7279 break; 7280 } 7281 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 7282 } 7283 7284#ifdef CONFIG_IEEE80211W 7285 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7286 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7287#endif /* CONFIG_IEEE80211W */ 7288 7289 if (params->disable_ht) 7290 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7291 7292 if (params->htcaps && params->htcaps_mask) { 7293 int sz = sizeof(struct ieee80211_ht_capabilities); 7294 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7295 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7296 params->htcaps_mask); 7297 } 7298 7299#ifdef CONFIG_VHT_OVERRIDES 7300 if (params->disable_vht) { 7301 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7302 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7303 } 7304 7305 if (params->vhtcaps && params->vhtcaps_mask) { 7306 int sz = sizeof(struct ieee80211_vht_capabilities); 7307 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7308 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7309 params->vhtcaps_mask); 7310 } 7311#endif /* CONFIG_VHT_OVERRIDES */ 7312 7313 ret = nl80211_set_conn_keys(params, msg); 7314 if (ret) 7315 goto nla_put_failure; 7316 7317 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7318 msg = NULL; 7319 if (ret) { 7320 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 7321 "(%s)", ret, strerror(-ret)); 7322 goto nla_put_failure; 7323 } 7324 ret = 0; 7325 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 7326 7327nla_put_failure: 7328 nlmsg_free(msg); 7329 return ret; 7330 7331} 7332 7333 7334static int wpa_driver_nl80211_connect( 7335 struct wpa_driver_nl80211_data *drv, 7336 struct wpa_driver_associate_params *params) 7337{ 7338 int ret = wpa_driver_nl80211_try_connect(drv, params); 7339 if (ret == -EALREADY) { 7340 /* 7341 * cfg80211 does not currently accept new connections if 7342 * we are already connected. As a workaround, force 7343 * disconnection and try again. 7344 */ 7345 wpa_printf(MSG_DEBUG, "nl80211: Explicitly " 7346 "disconnecting before reassociation " 7347 "attempt"); 7348 if (wpa_driver_nl80211_disconnect( 7349 drv, WLAN_REASON_PREV_AUTH_NOT_VALID)) 7350 return -1; 7351 /* Ignore the next local disconnect message. */ 7352 drv->ignore_next_local_disconnect = 1; 7353 ret = wpa_driver_nl80211_try_connect(drv, params); 7354 } 7355 return ret; 7356} 7357 7358 7359static int wpa_driver_nl80211_associate( 7360 void *priv, struct wpa_driver_associate_params *params) 7361{ 7362 struct i802_bss *bss = priv; 7363 struct wpa_driver_nl80211_data *drv = bss->drv; 7364 int ret = -1; 7365 struct nl_msg *msg; 7366 7367 if (params->mode == IEEE80211_MODE_AP) 7368 return wpa_driver_nl80211_ap(drv, params); 7369 7370 if (params->mode == IEEE80211_MODE_IBSS) 7371 return wpa_driver_nl80211_ibss(drv, params); 7372 7373 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 7374 enum nl80211_iftype nlmode = params->p2p ? 7375 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 7376 7377 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 7378 return -1; 7379 return wpa_driver_nl80211_connect(drv, params); 7380 } 7381 7382 drv->associated = 0; 7383 7384 msg = nlmsg_alloc(); 7385 if (!msg) 7386 return -1; 7387 7388 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 7389 drv->ifindex); 7390 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 7391 7392 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7393 if (params->bssid) { 7394 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7395 MAC2STR(params->bssid)); 7396 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7397 } 7398 if (params->freq) { 7399 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7400 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7401 drv->assoc_freq = params->freq; 7402 } else 7403 drv->assoc_freq = 0; 7404 if (params->bg_scan_period >= 0) { 7405 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7406 params->bg_scan_period); 7407 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7408 params->bg_scan_period); 7409 } 7410 if (params->ssid) { 7411 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7412 params->ssid, params->ssid_len); 7413 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7414 params->ssid); 7415 if (params->ssid_len > sizeof(drv->ssid)) 7416 goto nla_put_failure; 7417 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7418 drv->ssid_len = params->ssid_len; 7419 } 7420 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7421 if (params->wpa_ie) 7422 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7423 params->wpa_ie); 7424 7425 if (params->pairwise_suite != CIPHER_NONE) { 7426 int cipher; 7427 7428 switch (params->pairwise_suite) { 7429 case CIPHER_WEP40: 7430 cipher = WLAN_CIPHER_SUITE_WEP40; 7431 break; 7432 case CIPHER_WEP104: 7433 cipher = WLAN_CIPHER_SUITE_WEP104; 7434 break; 7435 case CIPHER_CCMP: 7436 cipher = WLAN_CIPHER_SUITE_CCMP; 7437 break; 7438 case CIPHER_GCMP: 7439 cipher = WLAN_CIPHER_SUITE_GCMP; 7440 break; 7441 case CIPHER_TKIP: 7442 default: 7443 cipher = WLAN_CIPHER_SUITE_TKIP; 7444 break; 7445 } 7446 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 7447 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7448 } 7449 7450 if (params->group_suite != CIPHER_NONE) { 7451 int cipher; 7452 7453 switch (params->group_suite) { 7454 case CIPHER_WEP40: 7455 cipher = WLAN_CIPHER_SUITE_WEP40; 7456 break; 7457 case CIPHER_WEP104: 7458 cipher = WLAN_CIPHER_SUITE_WEP104; 7459 break; 7460 case CIPHER_CCMP: 7461 cipher = WLAN_CIPHER_SUITE_CCMP; 7462 break; 7463 case CIPHER_GCMP: 7464 cipher = WLAN_CIPHER_SUITE_GCMP; 7465 break; 7466 case CIPHER_TKIP: 7467 default: 7468 cipher = WLAN_CIPHER_SUITE_TKIP; 7469 break; 7470 } 7471 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 7472 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7473 } 7474 7475#ifdef CONFIG_IEEE80211W 7476 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7477 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7478#endif /* CONFIG_IEEE80211W */ 7479 7480 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7481 7482 if (params->prev_bssid) { 7483 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 7484 MAC2STR(params->prev_bssid)); 7485 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 7486 params->prev_bssid); 7487 } 7488 7489 if (params->disable_ht) 7490 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7491 7492 if (params->htcaps && params->htcaps_mask) { 7493 int sz = sizeof(struct ieee80211_ht_capabilities); 7494 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7495 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7496 params->htcaps_mask); 7497 } 7498 7499#ifdef CONFIG_VHT_OVERRIDES 7500 if (params->disable_vht) { 7501 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7502 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7503 } 7504 7505 if (params->vhtcaps && params->vhtcaps_mask) { 7506 int sz = sizeof(struct ieee80211_vht_capabilities); 7507 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7508 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7509 params->vhtcaps_mask); 7510 } 7511#endif /* CONFIG_VHT_OVERRIDES */ 7512 7513 if (params->p2p) 7514 wpa_printf(MSG_DEBUG, " * P2P group"); 7515 7516 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7517 msg = NULL; 7518 if (ret) { 7519 wpa_dbg(drv->ctx, MSG_DEBUG, 7520 "nl80211: MLME command failed (assoc): ret=%d (%s)", 7521 ret, strerror(-ret)); 7522 nl80211_dump_scan(drv); 7523 goto nla_put_failure; 7524 } 7525 ret = 0; 7526 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 7527 "successfully"); 7528 7529nla_put_failure: 7530 nlmsg_free(msg); 7531 return ret; 7532} 7533 7534 7535static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 7536 int ifindex, enum nl80211_iftype mode) 7537{ 7538 struct nl_msg *msg; 7539 int ret = -ENOBUFS; 7540 7541 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 7542 ifindex, mode, nl80211_iftype_str(mode)); 7543 7544 msg = nlmsg_alloc(); 7545 if (!msg) 7546 return -ENOMEM; 7547 7548 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7549 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7550 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7551 7552 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7553 msg = NULL; 7554 if (!ret) 7555 return 0; 7556nla_put_failure: 7557 nlmsg_free(msg); 7558 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7559 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7560 return ret; 7561} 7562 7563 7564static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7565 enum nl80211_iftype nlmode) 7566{ 7567 struct wpa_driver_nl80211_data *drv = bss->drv; 7568 int ret = -1; 7569 int i; 7570 int was_ap = is_ap_interface(drv->nlmode); 7571 int res; 7572 7573 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7574 if (res == 0) { 7575 drv->nlmode = nlmode; 7576 ret = 0; 7577 goto done; 7578 } 7579 7580 if (res == -ENODEV) 7581 return -1; 7582 7583 if (nlmode == drv->nlmode) { 7584 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7585 "requested mode - ignore error"); 7586 ret = 0; 7587 goto done; /* Already in the requested mode */ 7588 } 7589 7590 /* mac80211 doesn't allow mode changes while the device is up, so 7591 * take the device down, try to set the mode again, and bring the 7592 * device back up. 7593 */ 7594 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7595 "interface down"); 7596 for (i = 0; i < 10; i++) { 7597 res = linux_set_iface_flags(drv->global->ioctl_sock, 7598 bss->ifname, 0); 7599 if (res == -EACCES || res == -ENODEV) 7600 break; 7601 if (res == 0) { 7602 /* Try to set the mode again while the interface is 7603 * down */ 7604 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7605 if (ret == -EACCES) 7606 break; 7607 res = linux_set_iface_flags(drv->global->ioctl_sock, 7608 bss->ifname, 1); 7609 if (res && !ret) 7610 ret = -1; 7611 else if (ret != -EBUSY) 7612 break; 7613 } else 7614 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7615 "interface down"); 7616 os_sleep(0, 100000); 7617 } 7618 7619 if (!ret) { 7620 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7621 "interface is down"); 7622 drv->nlmode = nlmode; 7623 drv->ignore_if_down_event = 1; 7624 } 7625 7626done: 7627 if (ret) { 7628 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7629 "from %d failed", nlmode, drv->nlmode); 7630 return ret; 7631 } 7632 7633 if (is_p2p_interface(nlmode)) 7634 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 7635 else if (drv->disabled_11b_rates) 7636 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 7637 7638 if (is_ap_interface(nlmode)) { 7639 nl80211_mgmt_unsubscribe(bss, "start AP"); 7640 /* Setup additional AP mode functionality if needed */ 7641 if (nl80211_setup_ap(bss)) 7642 return -1; 7643 } else if (was_ap) { 7644 /* Remove additional AP mode functionality */ 7645 nl80211_teardown_ap(bss); 7646 } else { 7647 nl80211_mgmt_unsubscribe(bss, "mode change"); 7648 } 7649 7650 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7651 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7652 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7653 "frame processing - ignore for now"); 7654 7655 return 0; 7656} 7657 7658 7659static int wpa_driver_nl80211_get_capa(void *priv, 7660 struct wpa_driver_capa *capa) 7661{ 7662 struct i802_bss *bss = priv; 7663 struct wpa_driver_nl80211_data *drv = bss->drv; 7664 if (!drv->has_capability) 7665 return -1; 7666 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7667 return 0; 7668} 7669 7670 7671static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7672{ 7673 struct i802_bss *bss = priv; 7674 struct wpa_driver_nl80211_data *drv = bss->drv; 7675 7676 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7677 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7678 drv->operstate = state; 7679 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7680 state ? IF_OPER_UP : IF_OPER_DORMANT); 7681} 7682 7683 7684static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7685{ 7686 struct i802_bss *bss = priv; 7687 struct wpa_driver_nl80211_data *drv = bss->drv; 7688 struct nl_msg *msg; 7689 struct nl80211_sta_flag_update upd; 7690 7691 msg = nlmsg_alloc(); 7692 if (!msg) 7693 return -ENOMEM; 7694 7695 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7696 7697 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7698 if_nametoindex(bss->ifname)); 7699 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7700 7701 os_memset(&upd, 0, sizeof(upd)); 7702 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7703 if (authorized) 7704 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7705 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7706 7707 return send_and_recv_msgs(drv, msg, NULL, NULL); 7708 nla_put_failure: 7709 nlmsg_free(msg); 7710 return -ENOBUFS; 7711} 7712 7713 7714/* Set kernel driver on given frequency (MHz) */ 7715static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7716{ 7717 struct i802_bss *bss = priv; 7718 return wpa_driver_nl80211_set_freq(bss, freq); 7719} 7720 7721 7722#if defined(HOSTAPD) || defined(CONFIG_AP) 7723 7724static inline int min_int(int a, int b) 7725{ 7726 if (a < b) 7727 return a; 7728 return b; 7729} 7730 7731 7732static int get_key_handler(struct nl_msg *msg, void *arg) 7733{ 7734 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7735 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7736 7737 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7738 genlmsg_attrlen(gnlh, 0), NULL); 7739 7740 /* 7741 * TODO: validate the key index and mac address! 7742 * Otherwise, there's a race condition as soon as 7743 * the kernel starts sending key notifications. 7744 */ 7745 7746 if (tb[NL80211_ATTR_KEY_SEQ]) 7747 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7748 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7749 return NL_SKIP; 7750} 7751 7752 7753static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7754 int idx, u8 *seq) 7755{ 7756 struct i802_bss *bss = priv; 7757 struct wpa_driver_nl80211_data *drv = bss->drv; 7758 struct nl_msg *msg; 7759 7760 msg = nlmsg_alloc(); 7761 if (!msg) 7762 return -ENOMEM; 7763 7764 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7765 7766 if (addr) 7767 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7768 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7769 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7770 7771 memset(seq, 0, 6); 7772 7773 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7774 nla_put_failure: 7775 nlmsg_free(msg); 7776 return -ENOBUFS; 7777} 7778 7779 7780static int i802_set_rts(void *priv, int rts) 7781{ 7782 struct i802_bss *bss = priv; 7783 struct wpa_driver_nl80211_data *drv = bss->drv; 7784 struct nl_msg *msg; 7785 int ret = -ENOBUFS; 7786 u32 val; 7787 7788 msg = nlmsg_alloc(); 7789 if (!msg) 7790 return -ENOMEM; 7791 7792 if (rts >= 2347) 7793 val = (u32) -1; 7794 else 7795 val = rts; 7796 7797 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7798 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7799 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7800 7801 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7802 msg = NULL; 7803 if (!ret) 7804 return 0; 7805nla_put_failure: 7806 nlmsg_free(msg); 7807 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7808 "%d (%s)", rts, ret, strerror(-ret)); 7809 return ret; 7810} 7811 7812 7813static int i802_set_frag(void *priv, int frag) 7814{ 7815 struct i802_bss *bss = priv; 7816 struct wpa_driver_nl80211_data *drv = bss->drv; 7817 struct nl_msg *msg; 7818 int ret = -ENOBUFS; 7819 u32 val; 7820 7821 msg = nlmsg_alloc(); 7822 if (!msg) 7823 return -ENOMEM; 7824 7825 if (frag >= 2346) 7826 val = (u32) -1; 7827 else 7828 val = frag; 7829 7830 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7831 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7832 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7833 7834 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7835 msg = NULL; 7836 if (!ret) 7837 return 0; 7838nla_put_failure: 7839 nlmsg_free(msg); 7840 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7841 "%d: %d (%s)", frag, ret, strerror(-ret)); 7842 return ret; 7843} 7844 7845 7846static int i802_flush(void *priv) 7847{ 7848 struct i802_bss *bss = priv; 7849 struct wpa_driver_nl80211_data *drv = bss->drv; 7850 struct nl_msg *msg; 7851 int res; 7852 7853 msg = nlmsg_alloc(); 7854 if (!msg) 7855 return -1; 7856 7857 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7858 7859 /* 7860 * XXX: FIX! this needs to flush all VLANs too 7861 */ 7862 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7863 if_nametoindex(bss->ifname)); 7864 7865 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7866 if (res) { 7867 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7868 "(%s)", res, strerror(-res)); 7869 } 7870 return res; 7871 nla_put_failure: 7872 nlmsg_free(msg); 7873 return -ENOBUFS; 7874} 7875 7876#endif /* HOSTAPD || CONFIG_AP */ 7877 7878 7879static int get_sta_handler(struct nl_msg *msg, void *arg) 7880{ 7881 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7882 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7883 struct hostap_sta_driver_data *data = arg; 7884 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7885 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7886 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7887 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7888 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7889 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7890 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7891 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7892 }; 7893 7894 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7895 genlmsg_attrlen(gnlh, 0), NULL); 7896 7897 /* 7898 * TODO: validate the interface and mac address! 7899 * Otherwise, there's a race condition as soon as 7900 * the kernel starts sending station notifications. 7901 */ 7902 7903 if (!tb[NL80211_ATTR_STA_INFO]) { 7904 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7905 return NL_SKIP; 7906 } 7907 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7908 tb[NL80211_ATTR_STA_INFO], 7909 stats_policy)) { 7910 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7911 return NL_SKIP; 7912 } 7913 7914 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7915 data->inactive_msec = 7916 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7917 if (stats[NL80211_STA_INFO_RX_BYTES]) 7918 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7919 if (stats[NL80211_STA_INFO_TX_BYTES]) 7920 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7921 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7922 data->rx_packets = 7923 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7924 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7925 data->tx_packets = 7926 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7927 if (stats[NL80211_STA_INFO_TX_FAILED]) 7928 data->tx_retry_failed = 7929 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7930 7931 return NL_SKIP; 7932} 7933 7934static int i802_read_sta_data(struct i802_bss *bss, 7935 struct hostap_sta_driver_data *data, 7936 const u8 *addr) 7937{ 7938 struct wpa_driver_nl80211_data *drv = bss->drv; 7939 struct nl_msg *msg; 7940 7941 os_memset(data, 0, sizeof(*data)); 7942 msg = nlmsg_alloc(); 7943 if (!msg) 7944 return -ENOMEM; 7945 7946 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7947 7948 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7949 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7950 7951 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7952 nla_put_failure: 7953 nlmsg_free(msg); 7954 return -ENOBUFS; 7955} 7956 7957 7958#if defined(HOSTAPD) || defined(CONFIG_AP) 7959 7960static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7961 int cw_min, int cw_max, int burst_time) 7962{ 7963 struct i802_bss *bss = priv; 7964 struct wpa_driver_nl80211_data *drv = bss->drv; 7965 struct nl_msg *msg; 7966 struct nlattr *txq, *params; 7967 7968 msg = nlmsg_alloc(); 7969 if (!msg) 7970 return -1; 7971 7972 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7973 7974 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7975 7976 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7977 if (!txq) 7978 goto nla_put_failure; 7979 7980 /* We are only sending parameters for a single TXQ at a time */ 7981 params = nla_nest_start(msg, 1); 7982 if (!params) 7983 goto nla_put_failure; 7984 7985 switch (queue) { 7986 case 0: 7987 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7988 break; 7989 case 1: 7990 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7991 break; 7992 case 2: 7993 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7994 break; 7995 case 3: 7996 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7997 break; 7998 } 7999 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 8000 * 32 usec, so need to convert the value here. */ 8001 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 8002 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 8003 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 8004 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 8005 8006 nla_nest_end(msg, params); 8007 8008 nla_nest_end(msg, txq); 8009 8010 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 8011 return 0; 8012 msg = NULL; 8013 nla_put_failure: 8014 nlmsg_free(msg); 8015 return -1; 8016} 8017 8018 8019static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr, 8020 const char *ifname, int vlan_id) 8021{ 8022 struct wpa_driver_nl80211_data *drv = bss->drv; 8023 struct nl_msg *msg; 8024 int ret = -ENOBUFS; 8025 8026 msg = nlmsg_alloc(); 8027 if (!msg) 8028 return -ENOMEM; 8029 8030 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 8031 8032 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 8033 if_nametoindex(bss->ifname)); 8034 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8035 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 8036 if_nametoindex(ifname)); 8037 8038 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8039 msg = NULL; 8040 if (ret < 0) { 8041 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 8042 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 8043 MAC2STR(addr), ifname, vlan_id, ret, 8044 strerror(-ret)); 8045 } 8046 nla_put_failure: 8047 nlmsg_free(msg); 8048 return ret; 8049} 8050 8051 8052static int i802_get_inact_sec(void *priv, const u8 *addr) 8053{ 8054 struct hostap_sta_driver_data data; 8055 int ret; 8056 8057 data.inactive_msec = (unsigned long) -1; 8058 ret = i802_read_sta_data(priv, &data, addr); 8059 if (ret || data.inactive_msec == (unsigned long) -1) 8060 return -1; 8061 return data.inactive_msec / 1000; 8062} 8063 8064 8065static int i802_sta_clear_stats(void *priv, const u8 *addr) 8066{ 8067#if 0 8068 /* TODO */ 8069#endif 8070 return 0; 8071} 8072 8073 8074static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 8075 int reason) 8076{ 8077 struct i802_bss *bss = priv; 8078 struct wpa_driver_nl80211_data *drv = bss->drv; 8079 struct ieee80211_mgmt mgmt; 8080 8081 if (drv->device_ap_sme) 8082 return wpa_driver_nl80211_sta_remove(bss, addr); 8083 8084 memset(&mgmt, 0, sizeof(mgmt)); 8085 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8086 WLAN_FC_STYPE_DEAUTH); 8087 memcpy(mgmt.da, addr, ETH_ALEN); 8088 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8089 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8090 mgmt.u.deauth.reason_code = host_to_le16(reason); 8091 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8092 IEEE80211_HDRLEN + 8093 sizeof(mgmt.u.deauth), 0, 0, 0, 0, 8094 0); 8095} 8096 8097 8098static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 8099 int reason) 8100{ 8101 struct i802_bss *bss = priv; 8102 struct wpa_driver_nl80211_data *drv = bss->drv; 8103 struct ieee80211_mgmt mgmt; 8104 8105 if (drv->device_ap_sme) 8106 return wpa_driver_nl80211_sta_remove(bss, addr); 8107 8108 memset(&mgmt, 0, sizeof(mgmt)); 8109 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8110 WLAN_FC_STYPE_DISASSOC); 8111 memcpy(mgmt.da, addr, ETH_ALEN); 8112 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8113 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8114 mgmt.u.disassoc.reason_code = host_to_le16(reason); 8115 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8116 IEEE80211_HDRLEN + 8117 sizeof(mgmt.u.disassoc), 0, 0, 0, 0, 8118 0); 8119} 8120 8121#endif /* HOSTAPD || CONFIG_AP */ 8122 8123#ifdef HOSTAPD 8124 8125static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8126{ 8127 int i; 8128 int *old; 8129 8130 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 8131 ifidx); 8132 for (i = 0; i < drv->num_if_indices; i++) { 8133 if (drv->if_indices[i] == 0) { 8134 drv->if_indices[i] = ifidx; 8135 return; 8136 } 8137 } 8138 8139 if (drv->if_indices != drv->default_if_indices) 8140 old = drv->if_indices; 8141 else 8142 old = NULL; 8143 8144 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 8145 sizeof(int)); 8146 if (!drv->if_indices) { 8147 if (!old) 8148 drv->if_indices = drv->default_if_indices; 8149 else 8150 drv->if_indices = old; 8151 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 8152 "interfaces"); 8153 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 8154 return; 8155 } else if (!old) 8156 os_memcpy(drv->if_indices, drv->default_if_indices, 8157 sizeof(drv->default_if_indices)); 8158 drv->if_indices[drv->num_if_indices] = ifidx; 8159 drv->num_if_indices++; 8160} 8161 8162 8163static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8164{ 8165 int i; 8166 8167 for (i = 0; i < drv->num_if_indices; i++) { 8168 if (drv->if_indices[i] == ifidx) { 8169 drv->if_indices[i] = 0; 8170 break; 8171 } 8172 } 8173} 8174 8175 8176static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8177{ 8178 int i; 8179 8180 for (i = 0; i < drv->num_if_indices; i++) 8181 if (drv->if_indices[i] == ifidx) 8182 return 1; 8183 8184 return 0; 8185} 8186 8187 8188static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 8189 const char *bridge_ifname) 8190{ 8191 struct i802_bss *bss = priv; 8192 struct wpa_driver_nl80211_data *drv = bss->drv; 8193 char name[IFNAMSIZ + 1]; 8194 8195 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 8196 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 8197 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 8198 if (val) { 8199 if (!if_nametoindex(name)) { 8200 if (nl80211_create_iface(drv, name, 8201 NL80211_IFTYPE_AP_VLAN, 8202 bss->addr, 1) < 0) 8203 return -1; 8204 if (bridge_ifname && 8205 linux_br_add_if(drv->global->ioctl_sock, 8206 bridge_ifname, name) < 0) 8207 return -1; 8208 } 8209 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 8210 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 8211 "interface %s up", name); 8212 } 8213 return i802_set_sta_vlan(priv, addr, name, 0); 8214 } else { 8215 if (bridge_ifname) 8216 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 8217 name); 8218 8219 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 8220 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 8221 name); 8222 } 8223} 8224 8225 8226static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 8227{ 8228 struct wpa_driver_nl80211_data *drv = eloop_ctx; 8229 struct sockaddr_ll lladdr; 8230 unsigned char buf[3000]; 8231 int len; 8232 socklen_t fromlen = sizeof(lladdr); 8233 8234 len = recvfrom(sock, buf, sizeof(buf), 0, 8235 (struct sockaddr *)&lladdr, &fromlen); 8236 if (len < 0) { 8237 perror("recv"); 8238 return; 8239 } 8240 8241 if (have_ifidx(drv, lladdr.sll_ifindex)) 8242 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 8243} 8244 8245 8246static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 8247 struct i802_bss *bss, 8248 const char *brname, const char *ifname) 8249{ 8250 int ifindex; 8251 char in_br[IFNAMSIZ]; 8252 8253 os_strlcpy(bss->brname, brname, IFNAMSIZ); 8254 ifindex = if_nametoindex(brname); 8255 if (ifindex == 0) { 8256 /* 8257 * Bridge was configured, but the bridge device does 8258 * not exist. Try to add it now. 8259 */ 8260 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 8261 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 8262 "bridge interface %s: %s", 8263 brname, strerror(errno)); 8264 return -1; 8265 } 8266 bss->added_bridge = 1; 8267 add_ifidx(drv, if_nametoindex(brname)); 8268 } 8269 8270 if (linux_br_get(in_br, ifname) == 0) { 8271 if (os_strcmp(in_br, brname) == 0) 8272 return 0; /* already in the bridge */ 8273 8274 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 8275 "bridge %s", ifname, in_br); 8276 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 8277 0) { 8278 wpa_printf(MSG_ERROR, "nl80211: Failed to " 8279 "remove interface %s from bridge " 8280 "%s: %s", 8281 ifname, brname, strerror(errno)); 8282 return -1; 8283 } 8284 } 8285 8286 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 8287 ifname, brname); 8288 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 8289 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 8290 "into bridge %s: %s", 8291 ifname, brname, strerror(errno)); 8292 return -1; 8293 } 8294 bss->added_if_into_bridge = 1; 8295 8296 return 0; 8297} 8298 8299 8300static void *i802_init(struct hostapd_data *hapd, 8301 struct wpa_init_params *params) 8302{ 8303 struct wpa_driver_nl80211_data *drv; 8304 struct i802_bss *bss; 8305 size_t i; 8306 char brname[IFNAMSIZ]; 8307 int ifindex, br_ifindex; 8308 int br_added = 0; 8309 8310 bss = wpa_driver_nl80211_init(hapd, params->ifname, 8311 params->global_priv); 8312 if (bss == NULL) 8313 return NULL; 8314 8315 drv = bss->drv; 8316 drv->nlmode = NL80211_IFTYPE_AP; 8317 drv->eapol_sock = -1; 8318 8319 if (linux_br_get(brname, params->ifname) == 0) { 8320 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 8321 params->ifname, brname); 8322 br_ifindex = if_nametoindex(brname); 8323 } else { 8324 brname[0] = '\0'; 8325 br_ifindex = 0; 8326 } 8327 8328 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 8329 drv->if_indices = drv->default_if_indices; 8330 for (i = 0; i < params->num_bridge; i++) { 8331 if (params->bridge[i]) { 8332 ifindex = if_nametoindex(params->bridge[i]); 8333 if (ifindex) 8334 add_ifidx(drv, ifindex); 8335 if (ifindex == br_ifindex) 8336 br_added = 1; 8337 } 8338 } 8339 if (!br_added && br_ifindex && 8340 (params->num_bridge == 0 || !params->bridge[0])) 8341 add_ifidx(drv, br_ifindex); 8342 8343 /* start listening for EAPOL on the default AP interface */ 8344 add_ifidx(drv, drv->ifindex); 8345 8346 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 8347 goto failed; 8348 8349 if (params->bssid) { 8350 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8351 params->bssid)) 8352 goto failed; 8353 } 8354 8355 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 8356 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 8357 "into AP mode", bss->ifname); 8358 goto failed; 8359 } 8360 8361 if (params->num_bridge && params->bridge[0] && 8362 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 8363 goto failed; 8364 8365 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 8366 goto failed; 8367 8368 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 8369 if (drv->eapol_sock < 0) { 8370 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 8371 goto failed; 8372 } 8373 8374 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 8375 { 8376 printf("Could not register read socket for eapol\n"); 8377 goto failed; 8378 } 8379 8380 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8381 params->own_addr)) 8382 goto failed; 8383 8384 memcpy(bss->addr, params->own_addr, ETH_ALEN); 8385 8386 return bss; 8387 8388failed: 8389 wpa_driver_nl80211_deinit(bss); 8390 return NULL; 8391} 8392 8393 8394static void i802_deinit(void *priv) 8395{ 8396 struct i802_bss *bss = priv; 8397 wpa_driver_nl80211_deinit(bss); 8398} 8399 8400#endif /* HOSTAPD */ 8401 8402 8403static enum nl80211_iftype wpa_driver_nl80211_if_type( 8404 enum wpa_driver_if_type type) 8405{ 8406 switch (type) { 8407 case WPA_IF_STATION: 8408 return NL80211_IFTYPE_STATION; 8409 case WPA_IF_P2P_CLIENT: 8410 case WPA_IF_P2P_GROUP: 8411 return NL80211_IFTYPE_P2P_CLIENT; 8412 case WPA_IF_AP_VLAN: 8413 return NL80211_IFTYPE_AP_VLAN; 8414 case WPA_IF_AP_BSS: 8415 return NL80211_IFTYPE_AP; 8416 case WPA_IF_P2P_GO: 8417 return NL80211_IFTYPE_P2P_GO; 8418 } 8419 return -1; 8420} 8421 8422 8423#ifdef CONFIG_P2P 8424 8425static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 8426{ 8427 struct wpa_driver_nl80211_data *drv; 8428 dl_list_for_each(drv, &global->interfaces, 8429 struct wpa_driver_nl80211_data, list) { 8430 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 8431 return 1; 8432 } 8433 return 0; 8434} 8435 8436 8437static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 8438 u8 *new_addr) 8439{ 8440 unsigned int idx; 8441 8442 if (!drv->global) 8443 return -1; 8444 8445 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 8446 for (idx = 0; idx < 64; idx++) { 8447 new_addr[0] = drv->first_bss.addr[0] | 0x02; 8448 new_addr[0] ^= idx << 2; 8449 if (!nl80211_addr_in_use(drv->global, new_addr)) 8450 break; 8451 } 8452 if (idx == 64) 8453 return -1; 8454 8455 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 8456 MACSTR, MAC2STR(new_addr)); 8457 8458 return 0; 8459} 8460 8461#endif /* CONFIG_P2P */ 8462 8463 8464static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 8465 const char *ifname, const u8 *addr, 8466 void *bss_ctx, void **drv_priv, 8467 char *force_ifname, u8 *if_addr, 8468 const char *bridge) 8469{ 8470 struct i802_bss *bss = priv; 8471 struct wpa_driver_nl80211_data *drv = bss->drv; 8472 int ifidx; 8473#ifdef HOSTAPD 8474 struct i802_bss *new_bss = NULL; 8475 8476 if (type == WPA_IF_AP_BSS) { 8477 new_bss = os_zalloc(sizeof(*new_bss)); 8478 if (new_bss == NULL) 8479 return -1; 8480 } 8481#endif /* HOSTAPD */ 8482 8483 if (addr) 8484 os_memcpy(if_addr, addr, ETH_ALEN); 8485 ifidx = nl80211_create_iface(drv, ifname, 8486 wpa_driver_nl80211_if_type(type), addr, 8487 0); 8488 if (ifidx < 0) { 8489#ifdef HOSTAPD 8490 os_free(new_bss); 8491#endif /* HOSTAPD */ 8492 return -1; 8493 } 8494 8495 if (!addr && 8496 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8497 if_addr) < 0) { 8498 nl80211_remove_iface(drv, ifidx); 8499 return -1; 8500 } 8501 8502#ifdef CONFIG_P2P 8503 if (!addr && 8504 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 8505 type == WPA_IF_P2P_GO)) { 8506 /* Enforce unique P2P Interface Address */ 8507 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 8508 8509 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8510 own_addr) < 0 || 8511 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 8512 new_addr) < 0) { 8513 nl80211_remove_iface(drv, ifidx); 8514 return -1; 8515 } 8516 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 8517 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 8518 "for P2P group interface"); 8519 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 8520 nl80211_remove_iface(drv, ifidx); 8521 return -1; 8522 } 8523 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 8524 new_addr) < 0) { 8525 nl80211_remove_iface(drv, ifidx); 8526 return -1; 8527 } 8528 } 8529 os_memcpy(if_addr, new_addr, ETH_ALEN); 8530 } 8531#endif /* CONFIG_P2P */ 8532 8533#ifdef HOSTAPD 8534 if (bridge && 8535 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 8536 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 8537 "interface %s to a bridge %s", ifname, bridge); 8538 nl80211_remove_iface(drv, ifidx); 8539 os_free(new_bss); 8540 return -1; 8541 } 8542 8543 if (type == WPA_IF_AP_BSS) { 8544 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 8545 { 8546 nl80211_remove_iface(drv, ifidx); 8547 os_free(new_bss); 8548 return -1; 8549 } 8550 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 8551 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 8552 new_bss->ifindex = ifidx; 8553 new_bss->drv = drv; 8554 new_bss->next = drv->first_bss.next; 8555 new_bss->freq = drv->first_bss.freq; 8556 new_bss->ctx = bss_ctx; 8557 drv->first_bss.next = new_bss; 8558 if (drv_priv) 8559 *drv_priv = new_bss; 8560 nl80211_init_bss(new_bss); 8561 8562 /* Subscribe management frames for this WPA_IF_AP_BSS */ 8563 if (nl80211_setup_ap(new_bss)) 8564 return -1; 8565 } 8566#endif /* HOSTAPD */ 8567 8568 if (drv->global) 8569 drv->global->if_add_ifindex = ifidx; 8570 8571 return 0; 8572} 8573 8574 8575static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 8576 enum wpa_driver_if_type type, 8577 const char *ifname) 8578{ 8579 struct wpa_driver_nl80211_data *drv = bss->drv; 8580 int ifindex = if_nametoindex(ifname); 8581 8582 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8583 __func__, type, ifname, ifindex); 8584 if (ifindex <= 0) 8585 return -1; 8586 8587 nl80211_remove_iface(drv, ifindex); 8588 8589#ifdef HOSTAPD 8590 if (type != WPA_IF_AP_BSS) 8591 return 0; 8592 8593 if (bss->added_if_into_bridge) { 8594 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8595 bss->ifname) < 0) 8596 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8597 "interface %s from bridge %s: %s", 8598 bss->ifname, bss->brname, strerror(errno)); 8599 } 8600 if (bss->added_bridge) { 8601 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8602 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8603 "bridge %s: %s", 8604 bss->brname, strerror(errno)); 8605 } 8606 8607 if (bss != &drv->first_bss) { 8608 struct i802_bss *tbss; 8609 8610 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8611 if (tbss->next == bss) { 8612 tbss->next = bss->next; 8613 /* Unsubscribe management frames */ 8614 nl80211_teardown_ap(bss); 8615 nl80211_destroy_bss(bss); 8616 os_free(bss); 8617 bss = NULL; 8618 break; 8619 } 8620 } 8621 if (bss) 8622 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8623 "BSS %p in the list", __func__, bss); 8624 } 8625#endif /* HOSTAPD */ 8626 8627 return 0; 8628} 8629 8630 8631static int cookie_handler(struct nl_msg *msg, void *arg) 8632{ 8633 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8634 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8635 u64 *cookie = arg; 8636 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8637 genlmsg_attrlen(gnlh, 0), NULL); 8638 if (tb[NL80211_ATTR_COOKIE]) 8639 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8640 return NL_SKIP; 8641} 8642 8643 8644static int nl80211_send_frame_cmd(struct i802_bss *bss, 8645 unsigned int freq, unsigned int wait, 8646 const u8 *buf, size_t buf_len, 8647 u64 *cookie_out, int no_cck, int no_ack, 8648 int offchanok) 8649{ 8650 struct wpa_driver_nl80211_data *drv = bss->drv; 8651 struct nl_msg *msg; 8652 u64 cookie; 8653 int ret = -1; 8654 8655 msg = nlmsg_alloc(); 8656 if (!msg) 8657 return -1; 8658 8659 wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8660 "no_ack=%d offchanok=%d", 8661 freq, wait, no_cck, no_ack, offchanok); 8662 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8663 8664 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8665 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8666 if (wait) 8667 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8668 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8669 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8670 if (no_cck) 8671 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8672 if (no_ack) 8673 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8674 8675 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8676 8677 cookie = 0; 8678 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8679 msg = NULL; 8680 if (ret) { 8681 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8682 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8683 freq, wait); 8684 goto nla_put_failure; 8685 } 8686 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; " 8687 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8688 (long long unsigned int) cookie); 8689 8690 if (cookie_out) 8691 *cookie_out = no_ack ? (u64) -1 : cookie; 8692 8693nla_put_failure: 8694 nlmsg_free(msg); 8695 return ret; 8696} 8697 8698 8699static int wpa_driver_nl80211_send_action(struct i802_bss *bss, 8700 unsigned int freq, 8701 unsigned int wait_time, 8702 const u8 *dst, const u8 *src, 8703 const u8 *bssid, 8704 const u8 *data, size_t data_len, 8705 int no_cck) 8706{ 8707 struct wpa_driver_nl80211_data *drv = bss->drv; 8708 int ret = -1; 8709 u8 *buf; 8710 struct ieee80211_hdr *hdr; 8711 8712 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8713 "freq=%u MHz wait=%d ms no_cck=%d)", 8714 drv->ifindex, freq, wait_time, no_cck); 8715 8716 buf = os_zalloc(24 + data_len); 8717 if (buf == NULL) 8718 return ret; 8719 os_memcpy(buf + 24, data, data_len); 8720 hdr = (struct ieee80211_hdr *) buf; 8721 hdr->frame_control = 8722 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8723 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8724 os_memcpy(hdr->addr2, src, ETH_ALEN); 8725 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8726 8727 if (is_ap_interface(drv->nlmode)) 8728 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len, 8729 0, freq, no_cck, 1, 8730 wait_time); 8731 else 8732 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8733 24 + data_len, 8734 &drv->send_action_cookie, 8735 no_cck, 0, 1); 8736 8737 os_free(buf); 8738 return ret; 8739} 8740 8741 8742static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8743{ 8744 struct i802_bss *bss = priv; 8745 struct wpa_driver_nl80211_data *drv = bss->drv; 8746 struct nl_msg *msg; 8747 int ret; 8748 8749 msg = nlmsg_alloc(); 8750 if (!msg) 8751 return; 8752 8753 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx", 8754 (long long unsigned int) drv->send_action_cookie); 8755 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8756 8757 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8758 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8759 8760 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8761 msg = NULL; 8762 if (ret) 8763 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8764 "(%s)", ret, strerror(-ret)); 8765 8766 nla_put_failure: 8767 nlmsg_free(msg); 8768} 8769 8770 8771static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8772 unsigned int duration) 8773{ 8774 struct i802_bss *bss = priv; 8775 struct wpa_driver_nl80211_data *drv = bss->drv; 8776 struct nl_msg *msg; 8777 int ret; 8778 u64 cookie; 8779 8780 msg = nlmsg_alloc(); 8781 if (!msg) 8782 return -1; 8783 8784 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8785 8786 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8787 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8788 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8789 8790 cookie = 0; 8791 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8792 msg = NULL; 8793 if (ret == 0) { 8794 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8795 "0x%llx for freq=%u MHz duration=%u", 8796 (long long unsigned int) cookie, freq, duration); 8797 drv->remain_on_chan_cookie = cookie; 8798 drv->pending_remain_on_chan = 1; 8799 return 0; 8800 } 8801 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8802 "(freq=%d duration=%u): %d (%s)", 8803 freq, duration, ret, strerror(-ret)); 8804nla_put_failure: 8805 nlmsg_free(msg); 8806 return -1; 8807} 8808 8809 8810static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8811{ 8812 struct i802_bss *bss = priv; 8813 struct wpa_driver_nl80211_data *drv = bss->drv; 8814 struct nl_msg *msg; 8815 int ret; 8816 8817 if (!drv->pending_remain_on_chan) { 8818 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8819 "to cancel"); 8820 return -1; 8821 } 8822 8823 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8824 "0x%llx", 8825 (long long unsigned int) drv->remain_on_chan_cookie); 8826 8827 msg = nlmsg_alloc(); 8828 if (!msg) 8829 return -1; 8830 8831 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8832 8833 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8834 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8835 8836 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8837 msg = NULL; 8838 if (ret == 0) 8839 return 0; 8840 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8841 "%d (%s)", ret, strerror(-ret)); 8842nla_put_failure: 8843 nlmsg_free(msg); 8844 return -1; 8845} 8846 8847 8848static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report) 8849{ 8850 struct wpa_driver_nl80211_data *drv = bss->drv; 8851 8852 if (!report) { 8853 if (bss->nl_preq && drv->device_ap_sme && 8854 is_ap_interface(drv->nlmode)) { 8855 /* 8856 * Do not disable Probe Request reporting that was 8857 * enabled in nl80211_setup_ap(). 8858 */ 8859 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8860 "Probe Request reporting nl_preq=%p while " 8861 "in AP mode", bss->nl_preq); 8862 } else if (bss->nl_preq) { 8863 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8864 "reporting nl_preq=%p", bss->nl_preq); 8865 eloop_unregister_read_sock( 8866 nl_socket_get_fd(bss->nl_preq)); 8867 nl_destroy_handles(&bss->nl_preq); 8868 } 8869 return 0; 8870 } 8871 8872 if (bss->nl_preq) { 8873 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8874 "already on! nl_preq=%p", bss->nl_preq); 8875 return 0; 8876 } 8877 8878 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8879 if (bss->nl_preq == NULL) 8880 return -1; 8881 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8882 "reporting nl_preq=%p", bss->nl_preq); 8883 8884 if (nl80211_register_frame(bss, bss->nl_preq, 8885 (WLAN_FC_TYPE_MGMT << 2) | 8886 (WLAN_FC_STYPE_PROBE_REQ << 4), 8887 NULL, 0) < 0) 8888 goto out_err; 8889 8890 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8891 wpa_driver_nl80211_event_receive, bss->nl_cb, 8892 bss->nl_preq); 8893 8894 return 0; 8895 8896 out_err: 8897 nl_destroy_handles(&bss->nl_preq); 8898 return -1; 8899} 8900 8901 8902static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8903 int ifindex, int disabled) 8904{ 8905 struct nl_msg *msg; 8906 struct nlattr *bands, *band; 8907 int ret; 8908 8909 msg = nlmsg_alloc(); 8910 if (!msg) 8911 return -1; 8912 8913 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8914 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8915 8916 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8917 if (!bands) 8918 goto nla_put_failure; 8919 8920 /* 8921 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8922 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8923 * rates. All 5 GHz rates are left enabled. 8924 */ 8925 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8926 if (!band) 8927 goto nla_put_failure; 8928 if (disabled) { 8929 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8930 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8931 } 8932 nla_nest_end(msg, band); 8933 8934 nla_nest_end(msg, bands); 8935 8936 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8937 msg = NULL; 8938 if (ret) { 8939 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8940 "(%s)", ret, strerror(-ret)); 8941 } else 8942 drv->disabled_11b_rates = disabled; 8943 8944 return ret; 8945 8946nla_put_failure: 8947 nlmsg_free(msg); 8948 return -1; 8949} 8950 8951 8952static int wpa_driver_nl80211_deinit_ap(void *priv) 8953{ 8954 struct i802_bss *bss = priv; 8955 struct wpa_driver_nl80211_data *drv = bss->drv; 8956 if (!is_ap_interface(drv->nlmode)) 8957 return -1; 8958 wpa_driver_nl80211_del_beacon(drv); 8959 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8960} 8961 8962 8963static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8964{ 8965 struct i802_bss *bss = priv; 8966 struct wpa_driver_nl80211_data *drv = bss->drv; 8967 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8968 return -1; 8969 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8970} 8971 8972 8973static void wpa_driver_nl80211_resume(void *priv) 8974{ 8975 struct i802_bss *bss = priv; 8976 struct wpa_driver_nl80211_data *drv = bss->drv; 8977 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8978 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8979 "resume event"); 8980 } 8981} 8982 8983 8984static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8985 const u8 *ies, size_t ies_len) 8986{ 8987 struct i802_bss *bss = priv; 8988 struct wpa_driver_nl80211_data *drv = bss->drv; 8989 int ret; 8990 u8 *data, *pos; 8991 size_t data_len; 8992 const u8 *own_addr = bss->addr; 8993 8994 if (action != 1) { 8995 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8996 "action %d", action); 8997 return -1; 8998 } 8999 9000 /* 9001 * Action frame payload: 9002 * Category[1] = 6 (Fast BSS Transition) 9003 * Action[1] = 1 (Fast BSS Transition Request) 9004 * STA Address 9005 * Target AP Address 9006 * FT IEs 9007 */ 9008 9009 data_len = 2 + 2 * ETH_ALEN + ies_len; 9010 data = os_malloc(data_len); 9011 if (data == NULL) 9012 return -1; 9013 pos = data; 9014 *pos++ = 0x06; /* FT Action category */ 9015 *pos++ = action; 9016 os_memcpy(pos, own_addr, ETH_ALEN); 9017 pos += ETH_ALEN; 9018 os_memcpy(pos, target_ap, ETH_ALEN); 9019 pos += ETH_ALEN; 9020 os_memcpy(pos, ies, ies_len); 9021 9022 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 9023 drv->bssid, own_addr, drv->bssid, 9024 data, data_len, 0); 9025 os_free(data); 9026 9027 return ret; 9028} 9029 9030 9031static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 9032{ 9033 struct i802_bss *bss = priv; 9034 struct wpa_driver_nl80211_data *drv = bss->drv; 9035 struct nl_msg *msg, *cqm = NULL; 9036 int ret = -1; 9037 9038 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 9039 "hysteresis=%d", threshold, hysteresis); 9040 9041 msg = nlmsg_alloc(); 9042 if (!msg) 9043 return -1; 9044 9045 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 9046 9047 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9048 9049 cqm = nlmsg_alloc(); 9050 if (cqm == NULL) 9051 goto nla_put_failure; 9052 9053 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 9054 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 9055 if (nla_put_nested(msg, NL80211_ATTR_CQM, cqm) < 0) 9056 goto nla_put_failure; 9057 9058 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9059 msg = NULL; 9060 9061nla_put_failure: 9062 nlmsg_free(cqm); 9063 nlmsg_free(msg); 9064 return ret; 9065} 9066 9067 9068static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 9069{ 9070 struct i802_bss *bss = priv; 9071 struct wpa_driver_nl80211_data *drv = bss->drv; 9072 int res; 9073 9074 os_memset(si, 0, sizeof(*si)); 9075 res = nl80211_get_link_signal(drv, si); 9076 if (res != 0) 9077 return res; 9078 9079 return nl80211_get_link_noise(drv, si); 9080} 9081 9082 9083static int wpa_driver_nl80211_shared_freq(void *priv) 9084{ 9085 struct i802_bss *bss = priv; 9086 struct wpa_driver_nl80211_data *drv = bss->drv; 9087 struct wpa_driver_nl80211_data *driver; 9088 int freq = 0; 9089 9090 /* 9091 * If the same PHY is in connected state with some other interface, 9092 * then retrieve the assoc freq. 9093 */ 9094 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 9095 drv->phyname); 9096 9097 dl_list_for_each(driver, &drv->global->interfaces, 9098 struct wpa_driver_nl80211_data, list) { 9099 if (drv == driver || 9100 os_strcmp(drv->phyname, driver->phyname) != 0 || 9101#ifdef ANDROID_P2P 9102 (!driver->associated && !is_ap_interface(driver->nlmode))) 9103#else 9104 !driver->associated) 9105#endif 9106 continue; 9107 9108 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 9109 MACSTR, 9110 driver->phyname, driver->first_bss.ifname, 9111 MAC2STR(driver->first_bss.addr)); 9112 if (is_ap_interface(driver->nlmode)) 9113 freq = driver->first_bss.freq; 9114 else 9115 freq = nl80211_get_assoc_freq(driver); 9116 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 9117 drv->phyname, freq); 9118 } 9119 9120 if (!freq) 9121 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 9122 "PHY (%s) in associated state", drv->phyname); 9123 9124 return freq; 9125} 9126 9127 9128static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 9129 int encrypt) 9130{ 9131 struct i802_bss *bss = priv; 9132 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 9133 0, 0, 0, 0); 9134} 9135 9136 9137static int nl80211_set_param(void *priv, const char *param) 9138{ 9139 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 9140 if (param == NULL) 9141 return 0; 9142 9143#ifdef CONFIG_P2P 9144 if (os_strstr(param, "use_p2p_group_interface=1")) { 9145 struct i802_bss *bss = priv; 9146 struct wpa_driver_nl80211_data *drv = bss->drv; 9147 9148 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 9149 "interface"); 9150 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 9151 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 9152 } 9153#ifdef ANDROID_P2P 9154 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 9155 struct i802_bss *bss = priv; 9156 struct wpa_driver_nl80211_data *drv = bss->drv; 9157 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 9158 "concurrency"); 9159 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 9160 } 9161#endif 9162#endif /* CONFIG_P2P */ 9163 9164 return 0; 9165} 9166 9167 9168static void * nl80211_global_init(void) 9169{ 9170 struct nl80211_global *global; 9171 struct netlink_config *cfg; 9172 9173 global = os_zalloc(sizeof(*global)); 9174 if (global == NULL) 9175 return NULL; 9176 global->ioctl_sock = -1; 9177 dl_list_init(&global->interfaces); 9178 global->if_add_ifindex = -1; 9179 9180 cfg = os_zalloc(sizeof(*cfg)); 9181 if (cfg == NULL) 9182 goto err; 9183 9184 cfg->ctx = global; 9185 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 9186 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 9187 global->netlink = netlink_init(cfg); 9188 if (global->netlink == NULL) { 9189 os_free(cfg); 9190 goto err; 9191 } 9192 9193 if (wpa_driver_nl80211_init_nl_global(global) < 0) 9194 goto err; 9195 9196 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 9197 if (global->ioctl_sock < 0) { 9198 perror("socket(PF_INET,SOCK_DGRAM)"); 9199 goto err; 9200 } 9201 9202 return global; 9203 9204err: 9205 nl80211_global_deinit(global); 9206 return NULL; 9207} 9208 9209 9210static void nl80211_global_deinit(void *priv) 9211{ 9212 struct nl80211_global *global = priv; 9213 if (global == NULL) 9214 return; 9215 if (!dl_list_empty(&global->interfaces)) { 9216 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 9217 "nl80211_global_deinit", 9218 dl_list_len(&global->interfaces)); 9219 } 9220 9221 if (global->netlink) 9222 netlink_deinit(global->netlink); 9223 9224 nl_destroy_handles(&global->nl); 9225 9226 if (global->nl_event) { 9227 eloop_unregister_read_sock( 9228 nl_socket_get_fd(global->nl_event)); 9229 nl_destroy_handles(&global->nl_event); 9230 } 9231 9232 nl_cb_put(global->nl_cb); 9233 9234 if (global->ioctl_sock >= 0) 9235 close(global->ioctl_sock); 9236 9237 os_free(global); 9238} 9239 9240 9241static const char * nl80211_get_radio_name(void *priv) 9242{ 9243 struct i802_bss *bss = priv; 9244 struct wpa_driver_nl80211_data *drv = bss->drv; 9245 return drv->phyname; 9246} 9247 9248 9249static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 9250 const u8 *pmkid) 9251{ 9252 struct nl_msg *msg; 9253 9254 msg = nlmsg_alloc(); 9255 if (!msg) 9256 return -ENOMEM; 9257 9258 nl80211_cmd(bss->drv, msg, 0, cmd); 9259 9260 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 9261 if (pmkid) 9262 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 9263 if (bssid) 9264 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 9265 9266 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9267 nla_put_failure: 9268 nlmsg_free(msg); 9269 return -ENOBUFS; 9270} 9271 9272 9273static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9274{ 9275 struct i802_bss *bss = priv; 9276 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 9277 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 9278} 9279 9280 9281static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9282{ 9283 struct i802_bss *bss = priv; 9284 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 9285 MAC2STR(bssid)); 9286 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 9287} 9288 9289 9290static int nl80211_flush_pmkid(void *priv) 9291{ 9292 struct i802_bss *bss = priv; 9293 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 9294 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 9295} 9296 9297 9298static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 9299 const u8 *replay_ctr) 9300{ 9301 struct i802_bss *bss = priv; 9302 struct wpa_driver_nl80211_data *drv = bss->drv; 9303 struct nlattr *replay_nested; 9304 struct nl_msg *msg; 9305 9306 msg = nlmsg_alloc(); 9307 if (!msg) 9308 return; 9309 9310 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 9311 9312 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9313 9314 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 9315 if (!replay_nested) 9316 goto nla_put_failure; 9317 9318 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 9319 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 9320 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 9321 replay_ctr); 9322 9323 nla_nest_end(msg, replay_nested); 9324 9325 send_and_recv_msgs(drv, msg, NULL, NULL); 9326 return; 9327 nla_put_failure: 9328 nlmsg_free(msg); 9329} 9330 9331 9332static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 9333 const u8 *addr, int qos) 9334{ 9335 /* send data frame to poll STA and check whether 9336 * this frame is ACKed */ 9337 struct { 9338 struct ieee80211_hdr hdr; 9339 u16 qos_ctl; 9340 } STRUCT_PACKED nulldata; 9341 size_t size; 9342 9343 /* Send data frame to poll STA and check whether this frame is ACKed */ 9344 9345 os_memset(&nulldata, 0, sizeof(nulldata)); 9346 9347 if (qos) { 9348 nulldata.hdr.frame_control = 9349 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9350 WLAN_FC_STYPE_QOS_NULL); 9351 size = sizeof(nulldata); 9352 } else { 9353 nulldata.hdr.frame_control = 9354 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9355 WLAN_FC_STYPE_NULLFUNC); 9356 size = sizeof(struct ieee80211_hdr); 9357 } 9358 9359 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 9360 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 9361 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 9362 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 9363 9364 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0, 9365 0, 0) < 0) 9366 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 9367 "send poll frame"); 9368} 9369 9370static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 9371 int qos) 9372{ 9373 struct i802_bss *bss = priv; 9374 struct wpa_driver_nl80211_data *drv = bss->drv; 9375 struct nl_msg *msg; 9376 9377 if (!drv->poll_command_supported) { 9378 nl80211_send_null_frame(bss, own_addr, addr, qos); 9379 return; 9380 } 9381 9382 msg = nlmsg_alloc(); 9383 if (!msg) 9384 return; 9385 9386 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 9387 9388 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9389 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 9390 9391 send_and_recv_msgs(drv, msg, NULL, NULL); 9392 return; 9393 nla_put_failure: 9394 nlmsg_free(msg); 9395} 9396 9397 9398static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 9399{ 9400 struct nl_msg *msg; 9401 9402 msg = nlmsg_alloc(); 9403 if (!msg) 9404 return -ENOMEM; 9405 9406 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 9407 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9408 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 9409 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 9410 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9411nla_put_failure: 9412 nlmsg_free(msg); 9413 return -ENOBUFS; 9414} 9415 9416 9417static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 9418 int ctwindow) 9419{ 9420 struct i802_bss *bss = priv; 9421 9422 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 9423 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 9424 9425 if (opp_ps != -1 || ctwindow != -1) 9426#ifdef ANDROID_P2P 9427 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 9428#else 9429 return -1; /* Not yet supported */ 9430#endif 9431 9432 if (legacy_ps == -1) 9433 return 0; 9434 if (legacy_ps != 0 && legacy_ps != 1) 9435 return -1; /* Not yet supported */ 9436 9437 return nl80211_set_power_save(bss, legacy_ps); 9438} 9439 9440 9441#ifdef CONFIG_TDLS 9442 9443static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 9444 u8 dialog_token, u16 status_code, 9445 const u8 *buf, size_t len) 9446{ 9447 struct i802_bss *bss = priv; 9448 struct wpa_driver_nl80211_data *drv = bss->drv; 9449 struct nl_msg *msg; 9450 9451 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9452 return -EOPNOTSUPP; 9453 9454 if (!dst) 9455 return -EINVAL; 9456 9457 msg = nlmsg_alloc(); 9458 if (!msg) 9459 return -ENOMEM; 9460 9461 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 9462 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9463 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 9464 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 9465 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 9466 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 9467 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 9468 9469 return send_and_recv_msgs(drv, msg, NULL, NULL); 9470 9471nla_put_failure: 9472 nlmsg_free(msg); 9473 return -ENOBUFS; 9474} 9475 9476 9477static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 9478{ 9479 struct i802_bss *bss = priv; 9480 struct wpa_driver_nl80211_data *drv = bss->drv; 9481 struct nl_msg *msg; 9482 enum nl80211_tdls_operation nl80211_oper; 9483 9484 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9485 return -EOPNOTSUPP; 9486 9487 switch (oper) { 9488 case TDLS_DISCOVERY_REQ: 9489 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 9490 break; 9491 case TDLS_SETUP: 9492 nl80211_oper = NL80211_TDLS_SETUP; 9493 break; 9494 case TDLS_TEARDOWN: 9495 nl80211_oper = NL80211_TDLS_TEARDOWN; 9496 break; 9497 case TDLS_ENABLE_LINK: 9498 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 9499 break; 9500 case TDLS_DISABLE_LINK: 9501 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 9502 break; 9503 case TDLS_ENABLE: 9504 return 0; 9505 case TDLS_DISABLE: 9506 return 0; 9507 default: 9508 return -EINVAL; 9509 } 9510 9511 msg = nlmsg_alloc(); 9512 if (!msg) 9513 return -ENOMEM; 9514 9515 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 9516 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 9517 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9518 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 9519 9520 return send_and_recv_msgs(drv, msg, NULL, NULL); 9521 9522nla_put_failure: 9523 nlmsg_free(msg); 9524 return -ENOBUFS; 9525} 9526 9527#endif /* CONFIG TDLS */ 9528 9529 9530#ifdef ANDROID 9531 9532typedef struct android_wifi_priv_cmd { 9533 char *buf; 9534 int used_len; 9535 int total_len; 9536} android_wifi_priv_cmd; 9537 9538static int drv_errors = 0; 9539 9540static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 9541{ 9542 drv_errors++; 9543 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 9544 drv_errors = 0; 9545 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 9546 } 9547} 9548 9549 9550static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 9551{ 9552 struct wpa_driver_nl80211_data *drv = bss->drv; 9553 struct ifreq ifr; 9554 android_wifi_priv_cmd priv_cmd; 9555 char buf[MAX_DRV_CMD_SIZE]; 9556 int ret; 9557 9558 os_memset(&ifr, 0, sizeof(ifr)); 9559 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 9560 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9561 9562 os_memset(buf, 0, sizeof(buf)); 9563 os_strlcpy(buf, cmd, sizeof(buf)); 9564 9565 priv_cmd.buf = buf; 9566 priv_cmd.used_len = sizeof(buf); 9567 priv_cmd.total_len = sizeof(buf); 9568 ifr.ifr_data = &priv_cmd; 9569 9570 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9571 if (ret < 0) { 9572 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9573 __func__); 9574 wpa_driver_send_hang_msg(drv); 9575 return ret; 9576 } 9577 9578 drv_errors = 0; 9579 return 0; 9580} 9581 9582 9583static int android_pno_start(struct i802_bss *bss, 9584 struct wpa_driver_scan_params *params) 9585{ 9586 struct wpa_driver_nl80211_data *drv = bss->drv; 9587 struct ifreq ifr; 9588 android_wifi_priv_cmd priv_cmd; 9589 int ret = 0, i = 0, bp; 9590 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9591 9592 bp = WEXT_PNOSETUP_HEADER_SIZE; 9593 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9594 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9595 buf[bp++] = WEXT_PNO_TLV_VERSION; 9596 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9597 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9598 9599 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9600 /* Check that there is enough space needed for 1 more SSID, the 9601 * other sections and null termination */ 9602 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9603 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9604 break; 9605 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9606 params->ssids[i].ssid, 9607 params->ssids[i].ssid_len); 9608 buf[bp++] = WEXT_PNO_SSID_SECTION; 9609 buf[bp++] = params->ssids[i].ssid_len; 9610 os_memcpy(&buf[bp], params->ssids[i].ssid, 9611 params->ssids[i].ssid_len); 9612 bp += params->ssids[i].ssid_len; 9613 i++; 9614 } 9615 9616 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9617 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9618 WEXT_PNO_SCAN_INTERVAL); 9619 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9620 9621 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9622 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9623 WEXT_PNO_REPEAT); 9624 bp += WEXT_PNO_REPEAT_LENGTH; 9625 9626 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9627 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9628 WEXT_PNO_MAX_REPEAT); 9629 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9630 9631 memset(&ifr, 0, sizeof(ifr)); 9632 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9633 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9634 9635 priv_cmd.buf = buf; 9636 priv_cmd.used_len = bp; 9637 priv_cmd.total_len = bp; 9638 ifr.ifr_data = &priv_cmd; 9639 9640 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9641 9642 if (ret < 0) { 9643 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9644 ret); 9645 wpa_driver_send_hang_msg(drv); 9646 return ret; 9647 } 9648 9649 drv_errors = 0; 9650 9651 return android_priv_cmd(bss, "PNOFORCE 1"); 9652} 9653 9654 9655static int android_pno_stop(struct i802_bss *bss) 9656{ 9657 return android_priv_cmd(bss, "PNOFORCE 0"); 9658} 9659 9660#endif /* ANDROID */ 9661 9662 9663static int driver_nl80211_set_key(const char *ifname, void *priv, 9664 enum wpa_alg alg, const u8 *addr, 9665 int key_idx, int set_tx, 9666 const u8 *seq, size_t seq_len, 9667 const u8 *key, size_t key_len) 9668{ 9669 struct i802_bss *bss = priv; 9670 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx, 9671 set_tx, seq, seq_len, key, key_len); 9672} 9673 9674 9675static int driver_nl80211_scan2(void *priv, 9676 struct wpa_driver_scan_params *params) 9677{ 9678 struct i802_bss *bss = priv; 9679 return wpa_driver_nl80211_scan(bss, params); 9680} 9681 9682 9683static int driver_nl80211_deauthenticate(void *priv, const u8 *addr, 9684 int reason_code) 9685{ 9686 struct i802_bss *bss = priv; 9687 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code); 9688} 9689 9690 9691static int driver_nl80211_authenticate(void *priv, 9692 struct wpa_driver_auth_params *params) 9693{ 9694 struct i802_bss *bss = priv; 9695 return wpa_driver_nl80211_authenticate(bss, params); 9696} 9697 9698 9699static void driver_nl80211_deinit(void *priv) 9700{ 9701 struct i802_bss *bss = priv; 9702 wpa_driver_nl80211_deinit(bss); 9703} 9704 9705 9706static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, 9707 const char *ifname) 9708{ 9709 struct i802_bss *bss = priv; 9710 return wpa_driver_nl80211_if_remove(bss, type, ifname); 9711} 9712 9713 9714static int driver_nl80211_send_mlme(void *priv, const u8 *data, 9715 size_t data_len, int noack) 9716{ 9717 struct i802_bss *bss = priv; 9718 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack, 9719 0, 0, 0, 0); 9720} 9721 9722 9723static int driver_nl80211_sta_remove(void *priv, const u8 *addr) 9724{ 9725 struct i802_bss *bss = priv; 9726 return wpa_driver_nl80211_sta_remove(bss, addr); 9727} 9728 9729 9730#if defined(HOSTAPD) || defined(CONFIG_AP) 9731static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr, 9732 const char *ifname, int vlan_id) 9733{ 9734 struct i802_bss *bss = priv; 9735 return i802_set_sta_vlan(bss, addr, ifname, vlan_id); 9736} 9737#endif /* HOSTAPD || CONFIG_AP */ 9738 9739 9740static int driver_nl80211_read_sta_data(void *priv, 9741 struct hostap_sta_driver_data *data, 9742 const u8 *addr) 9743{ 9744 struct i802_bss *bss = priv; 9745 return i802_read_sta_data(bss, data, addr); 9746} 9747 9748 9749static int driver_nl80211_send_action(void *priv, unsigned int freq, 9750 unsigned int wait_time, 9751 const u8 *dst, const u8 *src, 9752 const u8 *bssid, 9753 const u8 *data, size_t data_len, 9754 int no_cck) 9755{ 9756 struct i802_bss *bss = priv; 9757 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src, 9758 bssid, data, data_len, no_cck); 9759} 9760 9761 9762static int driver_nl80211_probe_req_report(void *priv, int report) 9763{ 9764 struct i802_bss *bss = priv; 9765 return wpa_driver_nl80211_probe_req_report(bss, report); 9766} 9767 9768 9769static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md, 9770 const u8 *ies, size_t ies_len) 9771{ 9772 int ret; 9773 struct nl_msg *msg; 9774 struct i802_bss *bss = priv; 9775 struct wpa_driver_nl80211_data *drv = bss->drv; 9776 u16 mdid = WPA_GET_LE16(md); 9777 9778 msg = nlmsg_alloc(); 9779 if (!msg) 9780 return -ENOMEM; 9781 9782 wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs"); 9783 nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES); 9784 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9785 NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies); 9786 NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid); 9787 9788 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9789 if (ret) { 9790 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed " 9791 "err=%d (%s)", ret, strerror(-ret)); 9792 } 9793 9794 return ret; 9795 9796nla_put_failure: 9797 nlmsg_free(msg); 9798 return -ENOBUFS; 9799} 9800 9801 9802const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9803 .name = "nl80211", 9804 .desc = "Linux nl80211/cfg80211", 9805 .get_bssid = wpa_driver_nl80211_get_bssid, 9806 .get_ssid = wpa_driver_nl80211_get_ssid, 9807 .set_key = driver_nl80211_set_key, 9808 .scan2 = driver_nl80211_scan2, 9809 .sched_scan = wpa_driver_nl80211_sched_scan, 9810 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9811 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9812 .deauthenticate = driver_nl80211_deauthenticate, 9813 .authenticate = driver_nl80211_authenticate, 9814 .associate = wpa_driver_nl80211_associate, 9815 .global_init = nl80211_global_init, 9816 .global_deinit = nl80211_global_deinit, 9817 .init2 = wpa_driver_nl80211_init, 9818 .deinit = driver_nl80211_deinit, 9819 .get_capa = wpa_driver_nl80211_get_capa, 9820 .set_operstate = wpa_driver_nl80211_set_operstate, 9821 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9822 .set_country = wpa_driver_nl80211_set_country, 9823 .set_ap = wpa_driver_nl80211_set_ap, 9824 .if_add = wpa_driver_nl80211_if_add, 9825 .if_remove = driver_nl80211_if_remove, 9826 .send_mlme = driver_nl80211_send_mlme, 9827 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9828 .sta_add = wpa_driver_nl80211_sta_add, 9829 .sta_remove = driver_nl80211_sta_remove, 9830 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9831 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9832#ifdef HOSTAPD 9833 .hapd_init = i802_init, 9834 .hapd_deinit = i802_deinit, 9835 .set_wds_sta = i802_set_wds_sta, 9836#endif /* HOSTAPD */ 9837#if defined(HOSTAPD) || defined(CONFIG_AP) 9838 .get_seqnum = i802_get_seqnum, 9839 .flush = i802_flush, 9840 .get_inact_sec = i802_get_inact_sec, 9841 .sta_clear_stats = i802_sta_clear_stats, 9842 .set_rts = i802_set_rts, 9843 .set_frag = i802_set_frag, 9844 .set_tx_queue_params = i802_set_tx_queue_params, 9845 .set_sta_vlan = driver_nl80211_set_sta_vlan, 9846 .sta_deauth = i802_sta_deauth, 9847 .sta_disassoc = i802_sta_disassoc, 9848#endif /* HOSTAPD || CONFIG_AP */ 9849 .read_sta_data = driver_nl80211_read_sta_data, 9850 .set_freq = i802_set_freq, 9851 .send_action = driver_nl80211_send_action, 9852 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9853 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9854 .cancel_remain_on_channel = 9855 wpa_driver_nl80211_cancel_remain_on_channel, 9856 .probe_req_report = driver_nl80211_probe_req_report, 9857 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9858 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9859 .resume = wpa_driver_nl80211_resume, 9860 .send_ft_action = nl80211_send_ft_action, 9861 .signal_monitor = nl80211_signal_monitor, 9862 .signal_poll = nl80211_signal_poll, 9863 .send_frame = nl80211_send_frame, 9864 .shared_freq = wpa_driver_nl80211_shared_freq, 9865 .set_param = nl80211_set_param, 9866 .get_radio_name = nl80211_get_radio_name, 9867 .add_pmkid = nl80211_add_pmkid, 9868 .remove_pmkid = nl80211_remove_pmkid, 9869 .flush_pmkid = nl80211_flush_pmkid, 9870 .set_rekey_info = nl80211_set_rekey_info, 9871 .poll_client = nl80211_poll_client, 9872 .set_p2p_powersave = nl80211_set_p2p_powersave, 9873#ifdef CONFIG_TDLS 9874 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9875 .tdls_oper = nl80211_tdls_oper, 9876#endif /* CONFIG_TDLS */ 9877 .update_ft_ies = wpa_driver_nl80211_update_ft_ies, 9878#ifdef ANDROID_P2P 9879 .set_noa = wpa_driver_set_p2p_noa, 9880 .get_noa = wpa_driver_get_p2p_noa, 9881 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9882#endif 9883#ifdef ANDROID 9884 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9885#endif 9886}; 9887