driver_nl80211.c revision 2f023193a0fd630eb82ce6381b80911ad5a3462f
1/* 2 * Driver interaction with Linux nl80211/cfg80211 3 * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi> 4 * Copyright (c) 2003-2004, Instant802 Networks, Inc. 5 * Copyright (c) 2005-2006, Devicescape Software, Inc. 6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net> 7 * Copyright (c) 2009-2010, Atheros Communications 8 * 9 * This software may be distributed under the terms of the BSD license. 10 * See README for more details. 11 */ 12 13#include "includes.h" 14#include <sys/ioctl.h> 15#include <sys/types.h> 16#include <sys/stat.h> 17#include <fcntl.h> 18#include <net/if.h> 19#include <netlink/genl/genl.h> 20#include <netlink/genl/family.h> 21#include <netlink/genl/ctrl.h> 22#include <linux/rtnetlink.h> 23#include <netpacket/packet.h> 24#include <linux/filter.h> 25#include <linux/errqueue.h> 26#include "nl80211_copy.h" 27 28#include "common.h" 29#include "eloop.h" 30#include "utils/list.h" 31#include "common/ieee802_11_defs.h" 32#include "common/ieee802_11_common.h" 33#include "l2_packet/l2_packet.h" 34#include "netlink.h" 35#include "linux_ioctl.h" 36#include "radiotap.h" 37#include "radiotap_iter.h" 38#include "rfkill.h" 39#include "driver.h" 40 41#ifndef SO_WIFI_STATUS 42# if defined(__sparc__) 43# define SO_WIFI_STATUS 0x0025 44# elif defined(__parisc__) 45# define SO_WIFI_STATUS 0x4022 46# else 47# define SO_WIFI_STATUS 41 48# endif 49 50# define SCM_WIFI_STATUS SO_WIFI_STATUS 51#endif 52 53#ifndef SO_EE_ORIGIN_TXSTATUS 54#define SO_EE_ORIGIN_TXSTATUS 4 55#endif 56 57#ifndef PACKET_TX_TIMESTAMP 58#define PACKET_TX_TIMESTAMP 16 59#endif 60 61#ifdef ANDROID 62#include "android_drv.h" 63#endif /* ANDROID */ 64#ifdef CONFIG_LIBNL20 65/* libnl 2.0 compatibility code */ 66#define nl_handle nl_sock 67#define nl80211_handle_alloc nl_socket_alloc_cb 68#define nl80211_handle_destroy nl_socket_free 69#else 70/* 71 * libnl 1.1 has a bug, it tries to allocate socket numbers densely 72 * but when you free a socket again it will mess up its bitmap and 73 * and use the wrong number the next time it needs a socket ID. 74 * Therefore, we wrap the handle alloc/destroy and add our own pid 75 * accounting. 76 */ 77static uint32_t port_bitmap[32] = { 0 }; 78 79static struct nl_handle *nl80211_handle_alloc(void *cb) 80{ 81 struct nl_handle *handle; 82 uint32_t pid = getpid() & 0x3FFFFF; 83 int i; 84 85 handle = nl_handle_alloc_cb(cb); 86 87 for (i = 0; i < 1024; i++) { 88 if (port_bitmap[i / 32] & (1 << (i % 32))) 89 continue; 90 port_bitmap[i / 32] |= 1 << (i % 32); 91 pid += i << 22; 92 break; 93 } 94 95 nl_socket_set_local_port(handle, pid); 96 97 return handle; 98} 99 100static void nl80211_handle_destroy(struct nl_handle *handle) 101{ 102 uint32_t port = nl_socket_get_local_port(handle); 103 104 port >>= 22; 105 port_bitmap[port / 32] &= ~(1 << (port % 32)); 106 107 nl_handle_destroy(handle); 108} 109#endif /* CONFIG_LIBNL20 */ 110 111 112static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg) 113{ 114 struct nl_handle *handle; 115 116 handle = nl80211_handle_alloc(cb); 117 if (handle == NULL) { 118 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 119 "callbacks (%s)", dbg); 120 return NULL; 121 } 122 123 if (genl_connect(handle)) { 124 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 125 "netlink (%s)", dbg); 126 nl80211_handle_destroy(handle); 127 return NULL; 128 } 129 130 return handle; 131} 132 133 134static void nl_destroy_handles(struct nl_handle **handle) 135{ 136 if (*handle == NULL) 137 return; 138 nl80211_handle_destroy(*handle); 139 *handle = NULL; 140} 141 142 143#ifndef IFF_LOWER_UP 144#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ 145#endif 146#ifndef IFF_DORMANT 147#define IFF_DORMANT 0x20000 /* driver signals dormant */ 148#endif 149 150#ifndef IF_OPER_DORMANT 151#define IF_OPER_DORMANT 5 152#endif 153#ifndef IF_OPER_UP 154#define IF_OPER_UP 6 155#endif 156 157struct nl80211_global { 158 struct dl_list interfaces; 159 int if_add_ifindex; 160 struct netlink_data *netlink; 161 struct nl_cb *nl_cb; 162 struct nl_handle *nl; 163 int nl80211_id; 164 int ioctl_sock; /* socket for ioctl() use */ 165 166 struct nl_handle *nl_event; 167}; 168 169struct nl80211_wiphy_data { 170 struct dl_list list; 171 struct dl_list bsss; 172 struct dl_list drvs; 173 174 struct nl_handle *nl_beacons; 175 struct nl_cb *nl_cb; 176 177 int wiphy_idx; 178}; 179 180static void nl80211_global_deinit(void *priv); 181 182struct i802_bss { 183 struct wpa_driver_nl80211_data *drv; 184 struct i802_bss *next; 185 int ifindex; 186 char ifname[IFNAMSIZ + 1]; 187 char brname[IFNAMSIZ]; 188 unsigned int beacon_set:1; 189 unsigned int added_if_into_bridge:1; 190 unsigned int added_bridge:1; 191 unsigned int in_deinit:1; 192 193 u8 addr[ETH_ALEN]; 194 195 int freq; 196 197 void *ctx; 198 struct nl_handle *nl_preq, *nl_mgmt; 199 struct nl_cb *nl_cb; 200 201 struct nl80211_wiphy_data *wiphy_data; 202 struct dl_list wiphy_list; 203}; 204 205struct wpa_driver_nl80211_data { 206 struct nl80211_global *global; 207 struct dl_list list; 208 struct dl_list wiphy_list; 209 char phyname[32]; 210 void *ctx; 211 int ifindex; 212 int if_removed; 213 int if_disabled; 214 int ignore_if_down_event; 215 struct rfkill_data *rfkill; 216 struct wpa_driver_capa capa; 217 int has_capability; 218 219 int operstate; 220 221 int scan_complete_events; 222 223 struct nl_cb *nl_cb; 224 225 u8 auth_bssid[ETH_ALEN]; 226 u8 bssid[ETH_ALEN]; 227 int associated; 228 u8 ssid[32]; 229 size_t ssid_len; 230 enum nl80211_iftype nlmode; 231 enum nl80211_iftype ap_scan_as_station; 232 unsigned int assoc_freq; 233 234 int monitor_sock; 235 int monitor_ifidx; 236 int monitor_refcount; 237 238 unsigned int disabled_11b_rates:1; 239 unsigned int pending_remain_on_chan:1; 240 unsigned int in_interface_list:1; 241 unsigned int device_ap_sme:1; 242 unsigned int poll_command_supported:1; 243 unsigned int data_tx_status:1; 244 unsigned int scan_for_auth:1; 245 unsigned int retry_auth:1; 246 unsigned int use_monitor:1; 247 unsigned int ignore_next_local_disconnect:1; 248 249 u64 remain_on_chan_cookie; 250 u64 send_action_cookie; 251 252 unsigned int last_mgmt_freq; 253 254 struct wpa_driver_scan_filter *filter_ssids; 255 size_t num_filter_ssids; 256 257 struct i802_bss first_bss; 258 259 int eapol_tx_sock; 260 261#ifdef HOSTAPD 262 int eapol_sock; /* socket for EAPOL frames */ 263 264 int default_if_indices[16]; 265 int *if_indices; 266 int num_if_indices; 267 268 int last_freq; 269 int last_freq_ht; 270#endif /* HOSTAPD */ 271 272 /* From failed authentication command */ 273 int auth_freq; 274 u8 auth_bssid_[ETH_ALEN]; 275 u8 auth_ssid[32]; 276 size_t auth_ssid_len; 277 int auth_alg; 278 u8 *auth_ie; 279 size_t auth_ie_len; 280 u8 auth_wep_key[4][16]; 281 size_t auth_wep_key_len[4]; 282 int auth_wep_tx_keyidx; 283 int auth_local_state_change; 284 int auth_p2p; 285}; 286 287 288static void wpa_driver_nl80211_deinit(struct i802_bss *bss); 289static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 290 void *timeout_ctx); 291static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 292 enum nl80211_iftype nlmode); 293static int 294wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); 295static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 296 const u8 *addr, int cmd, u16 reason_code, 297 int local_state_change); 298static void nl80211_remove_monitor_interface( 299 struct wpa_driver_nl80211_data *drv); 300static int nl80211_send_frame_cmd(struct i802_bss *bss, 301 unsigned int freq, unsigned int wait, 302 const u8 *buf, size_t buf_len, u64 *cookie, 303 int no_cck, int no_ack, int offchanok); 304static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, 305 int report); 306#ifdef ANDROID 307static int android_pno_start(struct i802_bss *bss, 308 struct wpa_driver_scan_params *params); 309static int android_pno_stop(struct i802_bss *bss); 310#endif /* ANDROID */ 311#ifdef ANDROID_P2P 312int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 313int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 314int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 315int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 316 const struct wpabuf *proberesp, 317 const struct wpabuf *assocresp); 318 319#endif 320#ifdef HOSTAPD 321static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 322static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 323static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 324static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 325 enum wpa_driver_if_type type, 326 const char *ifname); 327#else /* HOSTAPD */ 328static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 329{ 330} 331 332static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 333{ 334} 335 336static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 337{ 338 return 0; 339} 340#endif /* HOSTAPD */ 341#ifdef ANDROID 342extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 343 size_t buf_len); 344#endif 345 346static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 347 struct hostapd_freq_params *freq); 348static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 349 int ifindex, int disabled); 350 351static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 352static int wpa_driver_nl80211_authenticate_retry( 353 struct wpa_driver_nl80211_data *drv); 354 355 356static int is_ap_interface(enum nl80211_iftype nlmode) 357{ 358 return (nlmode == NL80211_IFTYPE_AP || 359 nlmode == NL80211_IFTYPE_P2P_GO); 360} 361 362 363static int is_sta_interface(enum nl80211_iftype nlmode) 364{ 365 return (nlmode == NL80211_IFTYPE_STATION || 366 nlmode == NL80211_IFTYPE_P2P_CLIENT); 367} 368 369 370static int is_p2p_interface(enum nl80211_iftype nlmode) 371{ 372 return (nlmode == NL80211_IFTYPE_P2P_CLIENT || 373 nlmode == NL80211_IFTYPE_P2P_GO); 374} 375 376 377struct nl80211_bss_info_arg { 378 struct wpa_driver_nl80211_data *drv; 379 struct wpa_scan_results *res; 380 unsigned int assoc_freq; 381 u8 assoc_bssid[ETH_ALEN]; 382}; 383 384static int bss_info_handler(struct nl_msg *msg, void *arg); 385 386 387/* nl80211 code */ 388static int ack_handler(struct nl_msg *msg, void *arg) 389{ 390 int *err = arg; 391 *err = 0; 392 return NL_STOP; 393} 394 395static int finish_handler(struct nl_msg *msg, void *arg) 396{ 397 int *ret = arg; 398 *ret = 0; 399 return NL_SKIP; 400} 401 402static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 403 void *arg) 404{ 405 int *ret = arg; 406 *ret = err->error; 407 return NL_SKIP; 408} 409 410 411static int no_seq_check(struct nl_msg *msg, void *arg) 412{ 413 return NL_OK; 414} 415 416 417static int send_and_recv(struct nl80211_global *global, 418 struct nl_handle *nl_handle, struct nl_msg *msg, 419 int (*valid_handler)(struct nl_msg *, void *), 420 void *valid_data) 421{ 422 struct nl_cb *cb; 423 int err = -ENOMEM; 424 425 cb = nl_cb_clone(global->nl_cb); 426 if (!cb) 427 goto out; 428 429 err = nl_send_auto_complete(nl_handle, msg); 430 if (err < 0) 431 goto out; 432 433 err = 1; 434 435 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 436 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 437 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 438 439 if (valid_handler) 440 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 441 valid_handler, valid_data); 442 443 while (err > 0) 444 nl_recvmsgs(nl_handle, cb); 445 out: 446 nl_cb_put(cb); 447 nlmsg_free(msg); 448 return err; 449} 450 451 452static int send_and_recv_msgs_global(struct nl80211_global *global, 453 struct nl_msg *msg, 454 int (*valid_handler)(struct nl_msg *, void *), 455 void *valid_data) 456{ 457 return send_and_recv(global, global->nl, msg, valid_handler, 458 valid_data); 459} 460 461 462#ifndef ANDROID 463static 464#endif 465int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 466 struct nl_msg *msg, 467 int (*valid_handler)(struct nl_msg *, void *), 468 void *valid_data) 469{ 470 return send_and_recv(drv->global, drv->global->nl, msg, 471 valid_handler, valid_data); 472} 473 474 475struct family_data { 476 const char *group; 477 int id; 478}; 479 480 481static int family_handler(struct nl_msg *msg, void *arg) 482{ 483 struct family_data *res = arg; 484 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 485 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 486 struct nlattr *mcgrp; 487 int i; 488 489 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 490 genlmsg_attrlen(gnlh, 0), NULL); 491 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 492 return NL_SKIP; 493 494 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 495 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 496 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 497 nla_len(mcgrp), NULL); 498 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 499 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 500 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 501 res->group, 502 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 503 continue; 504 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 505 break; 506 }; 507 508 return NL_SKIP; 509} 510 511 512static int nl_get_multicast_id(struct nl80211_global *global, 513 const char *family, const char *group) 514{ 515 struct nl_msg *msg; 516 int ret = -1; 517 struct family_data res = { group, -ENOENT }; 518 519 msg = nlmsg_alloc(); 520 if (!msg) 521 return -ENOMEM; 522 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 523 0, 0, CTRL_CMD_GETFAMILY, 0); 524 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 525 526 ret = send_and_recv_msgs_global(global, msg, family_handler, &res); 527 msg = NULL; 528 if (ret == 0) 529 ret = res.id; 530 531nla_put_failure: 532 nlmsg_free(msg); 533 return ret; 534} 535 536 537static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 538 struct nl_msg *msg, int flags, uint8_t cmd) 539{ 540 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 541 0, flags, cmd, 0); 542} 543 544 545struct wiphy_idx_data { 546 int wiphy_idx; 547}; 548 549 550static int netdev_info_handler(struct nl_msg *msg, void *arg) 551{ 552 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 553 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 554 struct wiphy_idx_data *info = arg; 555 556 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 557 genlmsg_attrlen(gnlh, 0), NULL); 558 559 if (tb[NL80211_ATTR_WIPHY]) 560 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 561 562 return NL_SKIP; 563} 564 565 566static int nl80211_get_wiphy_index(struct i802_bss *bss) 567{ 568 struct nl_msg *msg; 569 struct wiphy_idx_data data = { 570 .wiphy_idx = -1, 571 }; 572 573 msg = nlmsg_alloc(); 574 if (!msg) 575 return -1; 576 577 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 578 579 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 580 581 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 582 return data.wiphy_idx; 583 msg = NULL; 584nla_put_failure: 585 nlmsg_free(msg); 586 return -1; 587} 588 589 590static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 591 struct nl80211_wiphy_data *w) 592{ 593 struct nl_msg *msg; 594 int ret = -1; 595 596 msg = nlmsg_alloc(); 597 if (!msg) 598 return -1; 599 600 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); 601 602 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); 603 604 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 605 msg = NULL; 606 if (ret) { 607 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 608 "failed: ret=%d (%s)", 609 ret, strerror(-ret)); 610 goto nla_put_failure; 611 } 612 ret = 0; 613nla_put_failure: 614 nlmsg_free(msg); 615 return ret; 616} 617 618 619static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 620{ 621 struct nl80211_wiphy_data *w = eloop_ctx; 622 623 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 624 625 nl_recvmsgs(handle, w->nl_cb); 626} 627 628 629static int process_beacon_event(struct nl_msg *msg, void *arg) 630{ 631 struct nl80211_wiphy_data *w = arg; 632 struct wpa_driver_nl80211_data *drv; 633 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 634 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 635 union wpa_event_data event; 636 637 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 638 genlmsg_attrlen(gnlh, 0), NULL); 639 640 if (gnlh->cmd != NL80211_CMD_FRAME) { 641 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 642 gnlh->cmd); 643 return NL_SKIP; 644 } 645 646 if (!tb[NL80211_ATTR_FRAME]) 647 return NL_SKIP; 648 649 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 650 wiphy_list) { 651 os_memset(&event, 0, sizeof(event)); 652 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 653 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 654 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 655 } 656 657 return NL_SKIP; 658} 659 660 661static struct nl80211_wiphy_data * 662nl80211_get_wiphy_data_ap(struct i802_bss *bss) 663{ 664 static DEFINE_DL_LIST(nl80211_wiphys); 665 struct nl80211_wiphy_data *w; 666 int wiphy_idx, found = 0; 667 struct i802_bss *tmp_bss; 668 669 if (bss->wiphy_data != NULL) 670 return bss->wiphy_data; 671 672 wiphy_idx = nl80211_get_wiphy_index(bss); 673 674 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 675 if (w->wiphy_idx == wiphy_idx) 676 goto add; 677 } 678 679 /* alloc new one */ 680 w = os_zalloc(sizeof(*w)); 681 if (w == NULL) 682 return NULL; 683 w->wiphy_idx = wiphy_idx; 684 dl_list_init(&w->bsss); 685 dl_list_init(&w->drvs); 686 687 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 688 if (!w->nl_cb) { 689 os_free(w); 690 return NULL; 691 } 692 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 693 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, 694 w); 695 696 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 697 "wiphy beacons"); 698 if (w->nl_beacons == NULL) { 699 os_free(w); 700 return NULL; 701 } 702 703 if (nl80211_register_beacons(bss->drv, w)) { 704 nl_destroy_handles(&w->nl_beacons); 705 os_free(w); 706 return NULL; 707 } 708 709 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons), 710 nl80211_recv_beacons, w, w->nl_beacons); 711 712 dl_list_add(&nl80211_wiphys, &w->list); 713 714add: 715 /* drv entry for this bss already there? */ 716 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 717 if (tmp_bss->drv == bss->drv) { 718 found = 1; 719 break; 720 } 721 } 722 /* if not add it */ 723 if (!found) 724 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 725 726 dl_list_add(&w->bsss, &bss->wiphy_list); 727 bss->wiphy_data = w; 728 return w; 729} 730 731 732static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 733{ 734 struct nl80211_wiphy_data *w = bss->wiphy_data; 735 struct i802_bss *tmp_bss; 736 int found = 0; 737 738 if (w == NULL) 739 return; 740 bss->wiphy_data = NULL; 741 dl_list_del(&bss->wiphy_list); 742 743 /* still any for this drv present? */ 744 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 745 if (tmp_bss->drv == bss->drv) { 746 found = 1; 747 break; 748 } 749 } 750 /* if not remove it */ 751 if (!found) 752 dl_list_del(&bss->drv->wiphy_list); 753 754 if (!dl_list_empty(&w->bsss)) 755 return; 756 757 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons)); 758 759 nl_cb_put(w->nl_cb); 760 nl_destroy_handles(&w->nl_beacons); 761 dl_list_del(&w->list); 762 os_free(w); 763} 764 765 766static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 767{ 768 struct i802_bss *bss = priv; 769 struct wpa_driver_nl80211_data *drv = bss->drv; 770 if (!drv->associated) 771 return -1; 772 os_memcpy(bssid, drv->bssid, ETH_ALEN); 773 return 0; 774} 775 776 777static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 778{ 779 struct i802_bss *bss = priv; 780 struct wpa_driver_nl80211_data *drv = bss->drv; 781 if (!drv->associated) 782 return -1; 783 os_memcpy(ssid, drv->ssid, drv->ssid_len); 784 return drv->ssid_len; 785} 786 787 788static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, 789 char *buf, size_t len, int del) 790{ 791 union wpa_event_data event; 792 793 os_memset(&event, 0, sizeof(event)); 794 if (len > sizeof(event.interface_status.ifname)) 795 len = sizeof(event.interface_status.ifname) - 1; 796 os_memcpy(event.interface_status.ifname, buf, len); 797 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : 798 EVENT_INTERFACE_ADDED; 799 800 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", 801 del ? "DEL" : "NEW", 802 event.interface_status.ifname, 803 del ? "removed" : "added"); 804 805 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) { 806 if (del) { 807 if (drv->if_removed) { 808 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 809 "already set - ignore event"); 810 return; 811 } 812 drv->if_removed = 1; 813 } else { 814 if (if_nametoindex(drv->first_bss.ifname) == 0) { 815 wpa_printf(MSG_DEBUG, "nl80211: Interface %s " 816 "does not exist - ignore " 817 "RTM_NEWLINK", 818 drv->first_bss.ifname); 819 return; 820 } 821 if (!drv->if_removed) { 822 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 823 "already cleared - ignore event"); 824 return; 825 } 826 drv->if_removed = 0; 827 } 828 } 829 830 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 831} 832 833 834static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 835 u8 *buf, size_t len) 836{ 837 int attrlen, rta_len; 838 struct rtattr *attr; 839 840 attrlen = len; 841 attr = (struct rtattr *) buf; 842 843 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 844 while (RTA_OK(attr, attrlen)) { 845 if (attr->rta_type == IFLA_IFNAME) { 846 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname) 847 == 0) 848 return 1; 849 else 850 break; 851 } 852 attr = RTA_NEXT(attr, attrlen); 853 } 854 855 return 0; 856} 857 858 859static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 860 int ifindex, u8 *buf, size_t len) 861{ 862 if (drv->ifindex == ifindex) 863 return 1; 864 865 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 866 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname); 867 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 868 "interface"); 869 wpa_driver_nl80211_finish_drv_init(drv); 870 return 1; 871 } 872 873 return 0; 874} 875 876 877static struct wpa_driver_nl80211_data * 878nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 879{ 880 struct wpa_driver_nl80211_data *drv; 881 dl_list_for_each(drv, &global->interfaces, 882 struct wpa_driver_nl80211_data, list) { 883 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 884 have_ifidx(drv, idx)) 885 return drv; 886 } 887 return NULL; 888} 889 890 891static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 892 struct ifinfomsg *ifi, 893 u8 *buf, size_t len) 894{ 895 struct nl80211_global *global = ctx; 896 struct wpa_driver_nl80211_data *drv; 897 int attrlen, rta_len; 898 struct rtattr *attr; 899 u32 brid = 0; 900 char namebuf[IFNAMSIZ]; 901 902 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 903 if (!drv) { 904 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " 905 "ifindex %d", ifi->ifi_index); 906 return; 907 } 908 909 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " 910 "(%s%s%s%s)", 911 drv->operstate, ifi->ifi_flags, 912 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 913 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 914 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 915 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 916 917 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 918 if (if_indextoname(ifi->ifi_index, namebuf) && 919 linux_iface_up(drv->global->ioctl_sock, 920 drv->first_bss.ifname) > 0) { 921 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 922 "event since interface %s is up", namebuf); 923 return; 924 } 925 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 926 if (drv->ignore_if_down_event) { 927 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 928 "event generated by mode change"); 929 drv->ignore_if_down_event = 0; 930 } else { 931 drv->if_disabled = 1; 932 wpa_supplicant_event(drv->ctx, 933 EVENT_INTERFACE_DISABLED, NULL); 934 } 935 } 936 937 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 938 if (if_indextoname(ifi->ifi_index, namebuf) && 939 linux_iface_up(drv->global->ioctl_sock, 940 drv->first_bss.ifname) == 0) { 941 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 942 "event since interface %s is down", 943 namebuf); 944 } else if (if_nametoindex(drv->first_bss.ifname) == 0) { 945 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 946 "event since interface %s does not exist", 947 drv->first_bss.ifname); 948 } else if (drv->if_removed) { 949 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 950 "event since interface %s is marked " 951 "removed", drv->first_bss.ifname); 952 } else { 953 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 954 drv->if_disabled = 0; 955 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 956 NULL); 957 } 958 } 959 960 /* 961 * Some drivers send the association event before the operup event--in 962 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 963 * fails. This will hit us when wpa_supplicant does not need to do 964 * IEEE 802.1X authentication 965 */ 966 if (drv->operstate == 1 && 967 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 968 !(ifi->ifi_flags & IFF_RUNNING)) 969 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 970 -1, IF_OPER_UP); 971 972 attrlen = len; 973 attr = (struct rtattr *) buf; 974 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 975 while (RTA_OK(attr, attrlen)) { 976 if (attr->rta_type == IFLA_IFNAME) { 977 wpa_driver_nl80211_event_link( 978 drv, 979 ((char *) attr) + rta_len, 980 attr->rta_len - rta_len, 0); 981 } else if (attr->rta_type == IFLA_MASTER) 982 brid = nla_get_u32((struct nlattr *) attr); 983 attr = RTA_NEXT(attr, attrlen); 984 } 985 986 if (ifi->ifi_family == AF_BRIDGE && brid) { 987 /* device has been added to bridge */ 988 if_indextoname(brid, namebuf); 989 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 990 brid, namebuf); 991 add_ifidx(drv, brid); 992 } 993} 994 995 996static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 997 struct ifinfomsg *ifi, 998 u8 *buf, size_t len) 999{ 1000 struct nl80211_global *global = ctx; 1001 struct wpa_driver_nl80211_data *drv; 1002 int attrlen, rta_len; 1003 struct rtattr *attr; 1004 u32 brid = 0; 1005 1006 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1007 if (!drv) { 1008 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for " 1009 "foreign ifindex %d", ifi->ifi_index); 1010 return; 1011 } 1012 1013 attrlen = len; 1014 attr = (struct rtattr *) buf; 1015 1016 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1017 while (RTA_OK(attr, attrlen)) { 1018 if (attr->rta_type == IFLA_IFNAME) { 1019 wpa_driver_nl80211_event_link( 1020 drv, 1021 ((char *) attr) + rta_len, 1022 attr->rta_len - rta_len, 1); 1023 } else if (attr->rta_type == IFLA_MASTER) 1024 brid = nla_get_u32((struct nlattr *) attr); 1025 attr = RTA_NEXT(attr, attrlen); 1026 } 1027 1028 if (ifi->ifi_family == AF_BRIDGE && brid) { 1029 /* device has been removed from bridge */ 1030 char namebuf[IFNAMSIZ]; 1031 if_indextoname(brid, namebuf); 1032 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 1033 "%s", brid, namebuf); 1034 del_ifidx(drv, brid); 1035 } 1036} 1037 1038 1039static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 1040 const u8 *frame, size_t len) 1041{ 1042 const struct ieee80211_mgmt *mgmt; 1043 union wpa_event_data event; 1044 1045 wpa_printf(MSG_DEBUG, "nl80211: Authenticate event"); 1046 mgmt = (const struct ieee80211_mgmt *) frame; 1047 if (len < 24 + sizeof(mgmt->u.auth)) { 1048 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1049 "frame"); 1050 return; 1051 } 1052 1053 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 1054 os_memset(&event, 0, sizeof(event)); 1055 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 1056 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 1057 event.auth.auth_transaction = 1058 le_to_host16(mgmt->u.auth.auth_transaction); 1059 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 1060 if (len > 24 + sizeof(mgmt->u.auth)) { 1061 event.auth.ies = mgmt->u.auth.variable; 1062 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 1063 } 1064 1065 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 1066} 1067 1068 1069static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1070{ 1071 struct nl_msg *msg; 1072 int ret; 1073 struct nl80211_bss_info_arg arg; 1074 1075 os_memset(&arg, 0, sizeof(arg)); 1076 msg = nlmsg_alloc(); 1077 if (!msg) 1078 goto nla_put_failure; 1079 1080 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1081 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1082 1083 arg.drv = drv; 1084 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 1085 msg = NULL; 1086 if (ret == 0) { 1087 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1088 "associated BSS from scan results: %u MHz", 1089 arg.assoc_freq); 1090 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq; 1091 } 1092 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1093 "(%s)", ret, strerror(-ret)); 1094nla_put_failure: 1095 nlmsg_free(msg); 1096 return drv->assoc_freq; 1097} 1098 1099 1100static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 1101 const u8 *frame, size_t len) 1102{ 1103 const struct ieee80211_mgmt *mgmt; 1104 union wpa_event_data event; 1105 u16 status; 1106 1107 wpa_printf(MSG_DEBUG, "nl80211: Associate event"); 1108 mgmt = (const struct ieee80211_mgmt *) frame; 1109 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 1110 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1111 "frame"); 1112 return; 1113 } 1114 1115 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1116 if (status != WLAN_STATUS_SUCCESS) { 1117 os_memset(&event, 0, sizeof(event)); 1118 event.assoc_reject.bssid = mgmt->bssid; 1119 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1120 event.assoc_reject.resp_ies = 1121 (u8 *) mgmt->u.assoc_resp.variable; 1122 event.assoc_reject.resp_ies_len = 1123 len - 24 - sizeof(mgmt->u.assoc_resp); 1124 } 1125 event.assoc_reject.status_code = status; 1126 1127 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1128 return; 1129 } 1130 1131 drv->associated = 1; 1132 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 1133 1134 os_memset(&event, 0, sizeof(event)); 1135 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1136 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 1137 event.assoc_info.resp_ies_len = 1138 len - 24 - sizeof(mgmt->u.assoc_resp); 1139 } 1140 1141 event.assoc_info.freq = drv->assoc_freq; 1142 1143 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1144} 1145 1146 1147static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 1148 enum nl80211_commands cmd, struct nlattr *status, 1149 struct nlattr *addr, struct nlattr *req_ie, 1150 struct nlattr *resp_ie) 1151{ 1152 union wpa_event_data event; 1153 1154 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1155 /* 1156 * Avoid reporting two association events that would confuse 1157 * the core code. 1158 */ 1159 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 1160 "when using userspace SME", cmd); 1161 return; 1162 } 1163 1164 if (cmd == NL80211_CMD_CONNECT) 1165 wpa_printf(MSG_DEBUG, "nl80211: Connect event"); 1166 else if (cmd == NL80211_CMD_ROAM) 1167 wpa_printf(MSG_DEBUG, "nl80211: Roam event"); 1168 1169 os_memset(&event, 0, sizeof(event)); 1170 if (cmd == NL80211_CMD_CONNECT && 1171 nla_get_u16(status) != WLAN_STATUS_SUCCESS) { 1172 if (addr) 1173 event.assoc_reject.bssid = nla_data(addr); 1174 if (resp_ie) { 1175 event.assoc_reject.resp_ies = nla_data(resp_ie); 1176 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 1177 } 1178 event.assoc_reject.status_code = nla_get_u16(status); 1179 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1180 return; 1181 } 1182 1183 drv->associated = 1; 1184 if (addr) 1185 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 1186 1187 if (req_ie) { 1188 event.assoc_info.req_ies = nla_data(req_ie); 1189 event.assoc_info.req_ies_len = nla_len(req_ie); 1190 } 1191 if (resp_ie) { 1192 event.assoc_info.resp_ies = nla_data(resp_ie); 1193 event.assoc_info.resp_ies_len = nla_len(resp_ie); 1194 } 1195 1196 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 1197 1198 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1199} 1200 1201 1202static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, 1203 struct nlattr *reason, struct nlattr *addr, 1204 struct nlattr *by_ap) 1205{ 1206 union wpa_event_data data; 1207 unsigned int locally_generated = by_ap == NULL; 1208 1209 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1210 /* 1211 * Avoid reporting two disassociation events that could 1212 * confuse the core code. 1213 */ 1214 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1215 "event when using userspace SME"); 1216 return; 1217 } 1218 1219 if (drv->ignore_next_local_disconnect) { 1220 drv->ignore_next_local_disconnect = 0; 1221 if (locally_generated) { 1222 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1223 "event triggered during reassociation"); 1224 return; 1225 } 1226 wpa_printf(MSG_WARNING, "nl80211: Was expecting local " 1227 "disconnect but got another disconnect " 1228 "event first"); 1229 } 1230 1231 wpa_printf(MSG_DEBUG, "nl80211: Disconnect event"); 1232 drv->associated = 0; 1233 os_memset(&data, 0, sizeof(data)); 1234 if (reason) 1235 data.deauth_info.reason_code = nla_get_u16(reason); 1236 data.deauth_info.locally_generated = by_ap == NULL; 1237 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data); 1238} 1239 1240 1241static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv, 1242 struct nlattr *freq, struct nlattr *type) 1243{ 1244 union wpa_event_data data; 1245 int ht_enabled = 1; 1246 int chan_offset = 0; 1247 1248 wpa_printf(MSG_DEBUG, "nl80211: Channel switch event"); 1249 1250 if (!freq || !type) 1251 return; 1252 1253 switch (nla_get_u32(type)) { 1254 case NL80211_CHAN_NO_HT: 1255 ht_enabled = 0; 1256 break; 1257 case NL80211_CHAN_HT20: 1258 break; 1259 case NL80211_CHAN_HT40PLUS: 1260 chan_offset = 1; 1261 break; 1262 case NL80211_CHAN_HT40MINUS: 1263 chan_offset = -1; 1264 break; 1265 } 1266 1267 data.ch_switch.freq = nla_get_u32(freq); 1268 data.ch_switch.ht_enabled = ht_enabled; 1269 data.ch_switch.ch_offset = chan_offset; 1270 1271 wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data); 1272} 1273 1274 1275static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 1276 enum nl80211_commands cmd, struct nlattr *addr) 1277{ 1278 union wpa_event_data event; 1279 enum wpa_event_type ev; 1280 1281 if (nla_len(addr) != ETH_ALEN) 1282 return; 1283 1284 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 1285 cmd, MAC2STR((u8 *) nla_data(addr))); 1286 1287 if (cmd == NL80211_CMD_AUTHENTICATE) 1288 ev = EVENT_AUTH_TIMED_OUT; 1289 else if (cmd == NL80211_CMD_ASSOCIATE) 1290 ev = EVENT_ASSOC_TIMED_OUT; 1291 else 1292 return; 1293 1294 os_memset(&event, 0, sizeof(event)); 1295 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 1296 wpa_supplicant_event(drv->ctx, ev, &event); 1297} 1298 1299 1300static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, 1301 struct nlattr *freq, struct nlattr *sig, 1302 const u8 *frame, size_t len) 1303{ 1304 const struct ieee80211_mgmt *mgmt; 1305 union wpa_event_data event; 1306 u16 fc, stype; 1307 int ssi_signal = 0; 1308 1309 wpa_printf(MSG_DEBUG, "nl80211: Frame event"); 1310 mgmt = (const struct ieee80211_mgmt *) frame; 1311 if (len < 24) { 1312 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); 1313 return; 1314 } 1315 1316 fc = le_to_host16(mgmt->frame_control); 1317 stype = WLAN_FC_GET_STYPE(fc); 1318 1319 if (sig) 1320 ssi_signal = (s32) nla_get_u32(sig); 1321 1322 os_memset(&event, 0, sizeof(event)); 1323 if (freq) { 1324 event.rx_action.freq = nla_get_u32(freq); 1325 drv->last_mgmt_freq = event.rx_action.freq; 1326 } 1327 if (stype == WLAN_FC_STYPE_ACTION) { 1328 event.rx_action.da = mgmt->da; 1329 event.rx_action.sa = mgmt->sa; 1330 event.rx_action.bssid = mgmt->bssid; 1331 event.rx_action.category = mgmt->u.action.category; 1332 event.rx_action.data = &mgmt->u.action.category + 1; 1333 event.rx_action.len = frame + len - event.rx_action.data; 1334 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); 1335 } else { 1336 event.rx_mgmt.frame = frame; 1337 event.rx_mgmt.frame_len = len; 1338 event.rx_mgmt.ssi_signal = ssi_signal; 1339 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 1340 } 1341} 1342 1343 1344static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, 1345 struct nlattr *cookie, const u8 *frame, 1346 size_t len, struct nlattr *ack) 1347{ 1348 union wpa_event_data event; 1349 const struct ieee80211_hdr *hdr; 1350 u16 fc; 1351 1352 wpa_printf(MSG_DEBUG, "nl80211: Frame TX status event"); 1353 if (!is_ap_interface(drv->nlmode)) { 1354 u64 cookie_val; 1355 1356 if (!cookie) 1357 return; 1358 1359 cookie_val = nla_get_u64(cookie); 1360 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" 1361 " cookie=0%llx%s (ack=%d)", 1362 (long long unsigned int) cookie_val, 1363 cookie_val == drv->send_action_cookie ? 1364 " (match)" : " (unknown)", ack != NULL); 1365 if (cookie_val != drv->send_action_cookie) 1366 return; 1367 } 1368 1369 hdr = (const struct ieee80211_hdr *) frame; 1370 fc = le_to_host16(hdr->frame_control); 1371 1372 os_memset(&event, 0, sizeof(event)); 1373 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 1374 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 1375 event.tx_status.dst = hdr->addr1; 1376 event.tx_status.data = frame; 1377 event.tx_status.data_len = len; 1378 event.tx_status.ack = ack != NULL; 1379 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 1380} 1381 1382 1383static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 1384 enum wpa_event_type type, 1385 const u8 *frame, size_t len) 1386{ 1387 const struct ieee80211_mgmt *mgmt; 1388 union wpa_event_data event; 1389 const u8 *bssid = NULL; 1390 u16 reason_code = 0; 1391 1392 if (type == EVENT_DEAUTH) 1393 wpa_printf(MSG_DEBUG, "nl80211: Deauthenticate event"); 1394 else 1395 wpa_printf(MSG_DEBUG, "nl80211: Disassociate event"); 1396 1397 mgmt = (const struct ieee80211_mgmt *) frame; 1398 if (len >= 24) { 1399 bssid = mgmt->bssid; 1400 1401 if (drv->associated != 0 && 1402 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 1403 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 1404 /* 1405 * We have presumably received this deauth as a 1406 * response to a clear_state_mismatch() outgoing 1407 * deauth. Don't let it take us offline! 1408 */ 1409 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 1410 "from Unknown BSSID " MACSTR " -- ignoring", 1411 MAC2STR(bssid)); 1412 return; 1413 } 1414 } 1415 1416 drv->associated = 0; 1417 os_memset(&event, 0, sizeof(event)); 1418 1419 /* Note: Same offset for Reason Code in both frame subtypes */ 1420 if (len >= 24 + sizeof(mgmt->u.deauth)) 1421 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1422 1423 if (type == EVENT_DISASSOC) { 1424 event.disassoc_info.locally_generated = 1425 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1426 event.disassoc_info.addr = bssid; 1427 event.disassoc_info.reason_code = reason_code; 1428 if (frame + len > mgmt->u.disassoc.variable) { 1429 event.disassoc_info.ie = mgmt->u.disassoc.variable; 1430 event.disassoc_info.ie_len = frame + len - 1431 mgmt->u.disassoc.variable; 1432 } 1433 } else { 1434 event.deauth_info.locally_generated = 1435 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1436 event.deauth_info.addr = bssid; 1437 event.deauth_info.reason_code = reason_code; 1438 if (frame + len > mgmt->u.deauth.variable) { 1439 event.deauth_info.ie = mgmt->u.deauth.variable; 1440 event.deauth_info.ie_len = frame + len - 1441 mgmt->u.deauth.variable; 1442 } 1443 } 1444 1445 wpa_supplicant_event(drv->ctx, type, &event); 1446} 1447 1448 1449static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 1450 enum wpa_event_type type, 1451 const u8 *frame, size_t len) 1452{ 1453 const struct ieee80211_mgmt *mgmt; 1454 union wpa_event_data event; 1455 u16 reason_code = 0; 1456 1457 if (type == EVENT_UNPROT_DEAUTH) 1458 wpa_printf(MSG_DEBUG, "nl80211: Unprot Deauthenticate event"); 1459 else 1460 wpa_printf(MSG_DEBUG, "nl80211: Unprot Disassociate event"); 1461 1462 if (len < 24) 1463 return; 1464 1465 mgmt = (const struct ieee80211_mgmt *) frame; 1466 1467 os_memset(&event, 0, sizeof(event)); 1468 /* Note: Same offset for Reason Code in both frame subtypes */ 1469 if (len >= 24 + sizeof(mgmt->u.deauth)) 1470 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1471 1472 if (type == EVENT_UNPROT_DISASSOC) { 1473 event.unprot_disassoc.sa = mgmt->sa; 1474 event.unprot_disassoc.da = mgmt->da; 1475 event.unprot_disassoc.reason_code = reason_code; 1476 } else { 1477 event.unprot_deauth.sa = mgmt->sa; 1478 event.unprot_deauth.da = mgmt->da; 1479 event.unprot_deauth.reason_code = reason_code; 1480 } 1481 1482 wpa_supplicant_event(drv->ctx, type, &event); 1483} 1484 1485 1486static void mlme_event(struct wpa_driver_nl80211_data *drv, 1487 enum nl80211_commands cmd, struct nlattr *frame, 1488 struct nlattr *addr, struct nlattr *timed_out, 1489 struct nlattr *freq, struct nlattr *ack, 1490 struct nlattr *cookie, struct nlattr *sig) 1491{ 1492 if (timed_out && addr) { 1493 mlme_timeout_event(drv, cmd, addr); 1494 return; 1495 } 1496 1497 if (frame == NULL) { 1498 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " 1499 "data", cmd); 1500 return; 1501 } 1502 1503 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd); 1504 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 1505 nla_data(frame), nla_len(frame)); 1506 1507 switch (cmd) { 1508 case NL80211_CMD_AUTHENTICATE: 1509 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1510 break; 1511 case NL80211_CMD_ASSOCIATE: 1512 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1513 break; 1514 case NL80211_CMD_DEAUTHENTICATE: 1515 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1516 nla_data(frame), nla_len(frame)); 1517 break; 1518 case NL80211_CMD_DISASSOCIATE: 1519 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1520 nla_data(frame), nla_len(frame)); 1521 break; 1522 case NL80211_CMD_FRAME: 1523 mlme_event_mgmt(drv, freq, sig, nla_data(frame), 1524 nla_len(frame)); 1525 break; 1526 case NL80211_CMD_FRAME_TX_STATUS: 1527 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 1528 nla_len(frame), ack); 1529 break; 1530 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1531 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1532 nla_data(frame), nla_len(frame)); 1533 break; 1534 case NL80211_CMD_UNPROT_DISASSOCIATE: 1535 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1536 nla_data(frame), nla_len(frame)); 1537 break; 1538 default: 1539 break; 1540 } 1541} 1542 1543 1544static void mlme_event_michael_mic_failure(struct i802_bss *bss, 1545 struct nlattr *tb[]) 1546{ 1547 union wpa_event_data data; 1548 1549 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1550 os_memset(&data, 0, sizeof(data)); 1551 if (tb[NL80211_ATTR_MAC]) { 1552 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1553 nla_data(tb[NL80211_ATTR_MAC]), 1554 nla_len(tb[NL80211_ATTR_MAC])); 1555 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1556 } 1557 if (tb[NL80211_ATTR_KEY_SEQ]) { 1558 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1559 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1560 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1561 } 1562 if (tb[NL80211_ATTR_KEY_TYPE]) { 1563 enum nl80211_key_type key_type = 1564 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1565 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1566 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1567 data.michael_mic_failure.unicast = 1; 1568 } else 1569 data.michael_mic_failure.unicast = 1; 1570 1571 if (tb[NL80211_ATTR_KEY_IDX]) { 1572 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1573 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1574 } 1575 1576 wpa_supplicant_event(bss->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1577} 1578 1579 1580static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1581 struct nlattr *tb[]) 1582{ 1583 if (tb[NL80211_ATTR_MAC] == NULL) { 1584 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1585 "event"); 1586 return; 1587 } 1588 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1589 drv->associated = 1; 1590 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1591 MAC2STR(drv->bssid)); 1592 1593 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1594} 1595 1596 1597static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1598 int cancel_event, struct nlattr *tb[]) 1599{ 1600 unsigned int freq, chan_type, duration; 1601 union wpa_event_data data; 1602 u64 cookie; 1603 1604 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1605 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1606 else 1607 freq = 0; 1608 1609 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1610 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1611 else 1612 chan_type = 0; 1613 1614 if (tb[NL80211_ATTR_DURATION]) 1615 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1616 else 1617 duration = 0; 1618 1619 if (tb[NL80211_ATTR_COOKIE]) 1620 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1621 else 1622 cookie = 0; 1623 1624 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1625 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1626 cancel_event, freq, chan_type, duration, 1627 (long long unsigned int) cookie, 1628 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1629 1630 if (cookie != drv->remain_on_chan_cookie) 1631 return; /* not for us */ 1632 1633 if (cancel_event) 1634 drv->pending_remain_on_chan = 0; 1635 1636 os_memset(&data, 0, sizeof(data)); 1637 data.remain_on_channel.freq = freq; 1638 data.remain_on_channel.duration = duration; 1639 wpa_supplicant_event(drv->ctx, cancel_event ? 1640 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1641 EVENT_REMAIN_ON_CHANNEL, &data); 1642} 1643 1644 1645static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1646 struct nlattr *tb[]) 1647{ 1648 union wpa_event_data event; 1649 struct nlattr *nl; 1650 int rem; 1651 struct scan_info *info; 1652#define MAX_REPORT_FREQS 50 1653 int freqs[MAX_REPORT_FREQS]; 1654 int num_freqs = 0; 1655 1656 if (drv->scan_for_auth) { 1657 drv->scan_for_auth = 0; 1658 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1659 "cfg80211 BSS entry"); 1660 wpa_driver_nl80211_authenticate_retry(drv); 1661 return; 1662 } 1663 1664 os_memset(&event, 0, sizeof(event)); 1665 info = &event.scan_info; 1666 info->aborted = aborted; 1667 1668 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1669 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1670 struct wpa_driver_scan_ssid *s = 1671 &info->ssids[info->num_ssids]; 1672 s->ssid = nla_data(nl); 1673 s->ssid_len = nla_len(nl); 1674 info->num_ssids++; 1675 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1676 break; 1677 } 1678 } 1679 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1680 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1681 { 1682 freqs[num_freqs] = nla_get_u32(nl); 1683 num_freqs++; 1684 if (num_freqs == MAX_REPORT_FREQS - 1) 1685 break; 1686 } 1687 info->freqs = freqs; 1688 info->num_freqs = num_freqs; 1689 } 1690 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1691} 1692 1693 1694static int get_link_signal(struct nl_msg *msg, void *arg) 1695{ 1696 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1697 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1698 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1699 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1700 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1701 }; 1702 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1703 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1704 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1705 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1706 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1707 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1708 }; 1709 struct wpa_signal_info *sig_change = arg; 1710 1711 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1712 genlmsg_attrlen(gnlh, 0), NULL); 1713 if (!tb[NL80211_ATTR_STA_INFO] || 1714 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1715 tb[NL80211_ATTR_STA_INFO], policy)) 1716 return NL_SKIP; 1717 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1718 return NL_SKIP; 1719 1720 sig_change->current_signal = 1721 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1722 1723 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1724 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1725 sinfo[NL80211_STA_INFO_TX_BITRATE], 1726 rate_policy)) { 1727 sig_change->current_txrate = 0; 1728 } else { 1729 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1730 sig_change->current_txrate = 1731 nla_get_u16(rinfo[ 1732 NL80211_RATE_INFO_BITRATE]) * 100; 1733 } 1734 } 1735 } 1736 1737 return NL_SKIP; 1738} 1739 1740 1741static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1742 struct wpa_signal_info *sig) 1743{ 1744 struct nl_msg *msg; 1745 1746 sig->current_signal = -9999; 1747 sig->current_txrate = 0; 1748 1749 msg = nlmsg_alloc(); 1750 if (!msg) 1751 return -ENOMEM; 1752 1753 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 1754 1755 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1756 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1757 1758 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1759 nla_put_failure: 1760 nlmsg_free(msg); 1761 return -ENOBUFS; 1762} 1763 1764 1765static int get_link_noise(struct nl_msg *msg, void *arg) 1766{ 1767 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1768 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1769 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1770 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1771 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1772 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1773 }; 1774 struct wpa_signal_info *sig_change = arg; 1775 1776 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1777 genlmsg_attrlen(gnlh, 0), NULL); 1778 1779 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1780 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1781 return NL_SKIP; 1782 } 1783 1784 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1785 tb[NL80211_ATTR_SURVEY_INFO], 1786 survey_policy)) { 1787 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1788 "attributes!"); 1789 return NL_SKIP; 1790 } 1791 1792 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1793 return NL_SKIP; 1794 1795 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1796 sig_change->frequency) 1797 return NL_SKIP; 1798 1799 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1800 return NL_SKIP; 1801 1802 sig_change->current_noise = 1803 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1804 1805 return NL_SKIP; 1806} 1807 1808 1809static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1810 struct wpa_signal_info *sig_change) 1811{ 1812 struct nl_msg *msg; 1813 1814 sig_change->current_noise = 9999; 1815 sig_change->frequency = drv->assoc_freq; 1816 1817 msg = nlmsg_alloc(); 1818 if (!msg) 1819 return -ENOMEM; 1820 1821 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1822 1823 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1824 1825 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1826 nla_put_failure: 1827 nlmsg_free(msg); 1828 return -ENOBUFS; 1829} 1830 1831 1832static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 1833{ 1834 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1835 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1836 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1837 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1838 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1839 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1840 }; 1841 struct wpa_scan_results *scan_results = arg; 1842 struct wpa_scan_res *scan_res; 1843 size_t i; 1844 1845 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1846 genlmsg_attrlen(gnlh, 0), NULL); 1847 1848 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1849 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 1850 return NL_SKIP; 1851 } 1852 1853 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1854 tb[NL80211_ATTR_SURVEY_INFO], 1855 survey_policy)) { 1856 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 1857 "attributes"); 1858 return NL_SKIP; 1859 } 1860 1861 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1862 return NL_SKIP; 1863 1864 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1865 return NL_SKIP; 1866 1867 for (i = 0; i < scan_results->num; ++i) { 1868 scan_res = scan_results->res[i]; 1869 if (!scan_res) 1870 continue; 1871 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1872 scan_res->freq) 1873 continue; 1874 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 1875 continue; 1876 scan_res->noise = (s8) 1877 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1878 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 1879 } 1880 1881 return NL_SKIP; 1882} 1883 1884 1885static int nl80211_get_noise_for_scan_results( 1886 struct wpa_driver_nl80211_data *drv, 1887 struct wpa_scan_results *scan_res) 1888{ 1889 struct nl_msg *msg; 1890 1891 msg = nlmsg_alloc(); 1892 if (!msg) 1893 return -ENOMEM; 1894 1895 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1896 1897 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1898 1899 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 1900 scan_res); 1901 nla_put_failure: 1902 nlmsg_free(msg); 1903 return -ENOBUFS; 1904} 1905 1906 1907static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1908 struct nlattr *tb[]) 1909{ 1910 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1911 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1912 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1913 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1914 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1915 }; 1916 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1917 enum nl80211_cqm_rssi_threshold_event event; 1918 union wpa_event_data ed; 1919 struct wpa_signal_info sig; 1920 int res; 1921 1922 if (tb[NL80211_ATTR_CQM] == NULL || 1923 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1924 cqm_policy)) { 1925 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1926 return; 1927 } 1928 1929 os_memset(&ed, 0, sizeof(ed)); 1930 1931 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1932 if (!tb[NL80211_ATTR_MAC]) 1933 return; 1934 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1935 ETH_ALEN); 1936 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1937 return; 1938 } 1939 1940 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1941 return; 1942 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1943 1944 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1945 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1946 "event: RSSI high"); 1947 ed.signal_change.above_threshold = 1; 1948 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1949 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1950 "event: RSSI low"); 1951 ed.signal_change.above_threshold = 0; 1952 } else 1953 return; 1954 1955 res = nl80211_get_link_signal(drv, &sig); 1956 if (res == 0) { 1957 ed.signal_change.current_signal = sig.current_signal; 1958 ed.signal_change.current_txrate = sig.current_txrate; 1959 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 1960 sig.current_signal, sig.current_txrate); 1961 } 1962 1963 res = nl80211_get_link_noise(drv, &sig); 1964 if (res == 0) { 1965 ed.signal_change.current_noise = sig.current_noise; 1966 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 1967 sig.current_noise); 1968 } 1969 1970 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 1971} 1972 1973 1974static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 1975 struct nlattr **tb) 1976{ 1977 u8 *addr; 1978 union wpa_event_data data; 1979 1980 if (tb[NL80211_ATTR_MAC] == NULL) 1981 return; 1982 addr = nla_data(tb[NL80211_ATTR_MAC]); 1983 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 1984 1985 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 1986 u8 *ies = NULL; 1987 size_t ies_len = 0; 1988 if (tb[NL80211_ATTR_IE]) { 1989 ies = nla_data(tb[NL80211_ATTR_IE]); 1990 ies_len = nla_len(tb[NL80211_ATTR_IE]); 1991 } 1992 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 1993 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 1994 return; 1995 } 1996 1997 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1998 return; 1999 2000 os_memset(&data, 0, sizeof(data)); 2001 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 2002 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 2003} 2004 2005 2006static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 2007 struct nlattr **tb) 2008{ 2009 u8 *addr; 2010 union wpa_event_data data; 2011 2012 if (tb[NL80211_ATTR_MAC] == NULL) 2013 return; 2014 addr = nla_data(tb[NL80211_ATTR_MAC]); 2015 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 2016 MAC2STR(addr)); 2017 2018 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2019 drv_event_disassoc(drv->ctx, addr); 2020 return; 2021 } 2022 2023 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2024 return; 2025 2026 os_memset(&data, 0, sizeof(data)); 2027 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 2028 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 2029} 2030 2031 2032static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 2033 struct nlattr **tb) 2034{ 2035 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 2036 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 2037 [NL80211_REKEY_DATA_KEK] = { 2038 .minlen = NL80211_KEK_LEN, 2039 .maxlen = NL80211_KEK_LEN, 2040 }, 2041 [NL80211_REKEY_DATA_KCK] = { 2042 .minlen = NL80211_KCK_LEN, 2043 .maxlen = NL80211_KCK_LEN, 2044 }, 2045 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2046 .minlen = NL80211_REPLAY_CTR_LEN, 2047 .maxlen = NL80211_REPLAY_CTR_LEN, 2048 }, 2049 }; 2050 union wpa_event_data data; 2051 2052 if (!tb[NL80211_ATTR_MAC]) 2053 return; 2054 if (!tb[NL80211_ATTR_REKEY_DATA]) 2055 return; 2056 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2057 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2058 return; 2059 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2060 return; 2061 2062 os_memset(&data, 0, sizeof(data)); 2063 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2064 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2065 MAC2STR(data.driver_gtk_rekey.bssid)); 2066 data.driver_gtk_rekey.replay_ctr = 2067 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2068 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2069 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2070 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2071} 2072 2073 2074static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2075 struct nlattr **tb) 2076{ 2077 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2078 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2079 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2080 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2081 .minlen = ETH_ALEN, 2082 .maxlen = ETH_ALEN, 2083 }, 2084 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2085 }; 2086 union wpa_event_data data; 2087 2088 wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event"); 2089 2090 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2091 return; 2092 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2093 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2094 return; 2095 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2096 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2097 return; 2098 2099 os_memset(&data, 0, sizeof(data)); 2100 os_memcpy(data.pmkid_candidate.bssid, 2101 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2102 data.pmkid_candidate.index = 2103 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2104 data.pmkid_candidate.preauth = 2105 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2106 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2107} 2108 2109 2110static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2111 struct nlattr **tb) 2112{ 2113 union wpa_event_data data; 2114 2115 wpa_printf(MSG_DEBUG, "nl80211: Probe client event"); 2116 2117 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2118 return; 2119 2120 os_memset(&data, 0, sizeof(data)); 2121 os_memcpy(data.client_poll.addr, 2122 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2123 2124 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2125} 2126 2127 2128static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv, 2129 struct nlattr **tb) 2130{ 2131 union wpa_event_data data; 2132 2133 wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event"); 2134 2135 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION]) 2136 return; 2137 2138 os_memset(&data, 0, sizeof(data)); 2139 os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2140 switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) { 2141 case NL80211_TDLS_SETUP: 2142 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer " 2143 MACSTR, MAC2STR(data.tdls.peer)); 2144 data.tdls.oper = TDLS_REQUEST_SETUP; 2145 break; 2146 case NL80211_TDLS_TEARDOWN: 2147 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer " 2148 MACSTR, MAC2STR(data.tdls.peer)); 2149 data.tdls.oper = TDLS_REQUEST_TEARDOWN; 2150 break; 2151 default: 2152 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione " 2153 "event"); 2154 return; 2155 } 2156 if (tb[NL80211_ATTR_REASON_CODE]) { 2157 data.tdls.reason_code = 2158 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]); 2159 } 2160 2161 wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data); 2162} 2163 2164 2165static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv, 2166 struct nlattr **tb) 2167{ 2168 union wpa_event_data data; 2169 u32 reason; 2170 2171 wpa_printf(MSG_DEBUG, "nl80211: Connect failed event"); 2172 2173 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON]) 2174 return; 2175 2176 os_memset(&data, 0, sizeof(data)); 2177 os_memcpy(data.connect_failed_reason.addr, 2178 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2179 2180 reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]); 2181 switch (reason) { 2182 case NL80211_CONN_FAIL_MAX_CLIENTS: 2183 wpa_printf(MSG_DEBUG, "nl80211: Max client reached"); 2184 data.connect_failed_reason.code = MAX_CLIENT_REACHED; 2185 break; 2186 case NL80211_CONN_FAIL_BLOCKED_CLIENT: 2187 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR 2188 " tried to connect", 2189 MAC2STR(data.connect_failed_reason.addr)); 2190 data.connect_failed_reason.code = BLOCKED_CLIENT; 2191 break; 2192 default: 2193 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason " 2194 "%u", reason); 2195 return; 2196 } 2197 2198 wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data); 2199} 2200 2201 2202static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2203 int wds) 2204{ 2205 struct wpa_driver_nl80211_data *drv = bss->drv; 2206 union wpa_event_data event; 2207 2208 if (!tb[NL80211_ATTR_MAC]) 2209 return; 2210 2211 os_memset(&event, 0, sizeof(event)); 2212 event.rx_from_unknown.bssid = bss->addr; 2213 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2214 event.rx_from_unknown.wds = wds; 2215 2216 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2217} 2218 2219 2220static void do_process_drv_event(struct i802_bss *bss, int cmd, 2221 struct nlattr **tb) 2222{ 2223 struct wpa_driver_nl80211_data *drv = bss->drv; 2224 2225 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2226 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2227 cmd == NL80211_CMD_SCAN_ABORTED)) { 2228 wpa_driver_nl80211_set_mode(&drv->first_bss, 2229 drv->ap_scan_as_station); 2230 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2231 } 2232 2233 switch (cmd) { 2234 case NL80211_CMD_TRIGGER_SCAN: 2235 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger"); 2236 break; 2237 case NL80211_CMD_START_SCHED_SCAN: 2238 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started"); 2239 break; 2240 case NL80211_CMD_SCHED_SCAN_STOPPED: 2241 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped"); 2242 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2243 break; 2244 case NL80211_CMD_NEW_SCAN_RESULTS: 2245 wpa_printf(MSG_DEBUG, "nl80211: New scan results available"); 2246 drv->scan_complete_events = 1; 2247 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2248 drv->ctx); 2249 send_scan_event(drv, 0, tb); 2250 break; 2251 case NL80211_CMD_SCHED_SCAN_RESULTS: 2252 wpa_printf(MSG_DEBUG, 2253 "nl80211: New sched scan results available"); 2254 send_scan_event(drv, 0, tb); 2255 break; 2256 case NL80211_CMD_SCAN_ABORTED: 2257 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted"); 2258 /* 2259 * Need to indicate that scan results are available in order 2260 * not to make wpa_supplicant stop its scanning. 2261 */ 2262 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2263 drv->ctx); 2264 send_scan_event(drv, 1, tb); 2265 break; 2266 case NL80211_CMD_AUTHENTICATE: 2267 case NL80211_CMD_ASSOCIATE: 2268 case NL80211_CMD_DEAUTHENTICATE: 2269 case NL80211_CMD_DISASSOCIATE: 2270 case NL80211_CMD_FRAME_TX_STATUS: 2271 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2272 case NL80211_CMD_UNPROT_DISASSOCIATE: 2273 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME], 2274 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2275 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2276 tb[NL80211_ATTR_COOKIE], 2277 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2278 break; 2279 case NL80211_CMD_CONNECT: 2280 case NL80211_CMD_ROAM: 2281 mlme_event_connect(drv, cmd, 2282 tb[NL80211_ATTR_STATUS_CODE], 2283 tb[NL80211_ATTR_MAC], 2284 tb[NL80211_ATTR_REQ_IE], 2285 tb[NL80211_ATTR_RESP_IE]); 2286 break; 2287 case NL80211_CMD_CH_SWITCH_NOTIFY: 2288 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], 2289 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2290 break; 2291 case NL80211_CMD_DISCONNECT: 2292 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2293 tb[NL80211_ATTR_MAC], 2294 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2295 break; 2296 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2297 mlme_event_michael_mic_failure(bss, tb); 2298 break; 2299 case NL80211_CMD_JOIN_IBSS: 2300 mlme_event_join_ibss(drv, tb); 2301 break; 2302 case NL80211_CMD_REMAIN_ON_CHANNEL: 2303 mlme_event_remain_on_channel(drv, 0, tb); 2304 break; 2305 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2306 mlme_event_remain_on_channel(drv, 1, tb); 2307 break; 2308 case NL80211_CMD_NOTIFY_CQM: 2309 nl80211_cqm_event(drv, tb); 2310 break; 2311 case NL80211_CMD_REG_CHANGE: 2312 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2313 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2314 NULL); 2315 break; 2316 case NL80211_CMD_REG_BEACON_HINT: 2317 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2318 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2319 NULL); 2320 break; 2321 case NL80211_CMD_NEW_STATION: 2322 nl80211_new_station_event(drv, tb); 2323 break; 2324 case NL80211_CMD_DEL_STATION: 2325 nl80211_del_station_event(drv, tb); 2326 break; 2327 case NL80211_CMD_SET_REKEY_OFFLOAD: 2328 nl80211_rekey_offload_event(drv, tb); 2329 break; 2330 case NL80211_CMD_PMKSA_CANDIDATE: 2331 nl80211_pmksa_candidate_event(drv, tb); 2332 break; 2333 case NL80211_CMD_PROBE_CLIENT: 2334 nl80211_client_probe_event(drv, tb); 2335 break; 2336 case NL80211_CMD_TDLS_OPER: 2337 nl80211_tdls_oper_event(drv, tb); 2338 break; 2339 case NL80211_CMD_CONN_FAILED: 2340 nl80211_connect_failed_event(drv, tb); 2341 break; 2342 default: 2343 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2344 "(cmd=%d)", cmd); 2345 break; 2346 } 2347} 2348 2349 2350static int process_drv_event(struct nl_msg *msg, void *arg) 2351{ 2352 struct wpa_driver_nl80211_data *drv = arg; 2353 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2354 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2355 struct i802_bss *bss; 2356 int ifidx = -1; 2357 2358 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2359 genlmsg_attrlen(gnlh, 0), NULL); 2360 2361 if (tb[NL80211_ATTR_IFINDEX]) 2362 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2363 2364 for (bss = &drv->first_bss; bss; bss = bss->next) { 2365 if (ifidx == -1 || ifidx == bss->ifindex) { 2366 do_process_drv_event(bss, gnlh->cmd, tb); 2367 return NL_SKIP; 2368 } 2369 } 2370 2371 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d) for foreign " 2372 "interface (ifindex %d)", gnlh->cmd, ifidx); 2373 2374 return NL_SKIP; 2375} 2376 2377 2378static int process_global_event(struct nl_msg *msg, void *arg) 2379{ 2380 struct nl80211_global *global = arg; 2381 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2382 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2383 struct wpa_driver_nl80211_data *drv, *tmp; 2384 int ifidx = -1; 2385 struct i802_bss *bss; 2386 2387 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2388 genlmsg_attrlen(gnlh, 0), NULL); 2389 2390 if (tb[NL80211_ATTR_IFINDEX]) 2391 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2392 2393 dl_list_for_each_safe(drv, tmp, &global->interfaces, 2394 struct wpa_driver_nl80211_data, list) { 2395 for (bss = &drv->first_bss; bss; bss = bss->next) { 2396 if (ifidx == -1 || ifidx == bss->ifindex) { 2397 do_process_drv_event(bss, gnlh->cmd, tb); 2398 return NL_SKIP; 2399 } 2400 } 2401 } 2402 2403 return NL_SKIP; 2404} 2405 2406 2407static int process_bss_event(struct nl_msg *msg, void *arg) 2408{ 2409 struct i802_bss *bss = arg; 2410 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2411 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2412 2413 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2414 genlmsg_attrlen(gnlh, 0), NULL); 2415 2416 switch (gnlh->cmd) { 2417 case NL80211_CMD_FRAME: 2418 case NL80211_CMD_FRAME_TX_STATUS: 2419 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2420 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2421 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2422 tb[NL80211_ATTR_COOKIE], 2423 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2424 break; 2425 case NL80211_CMD_UNEXPECTED_FRAME: 2426 nl80211_spurious_frame(bss, tb, 0); 2427 break; 2428 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2429 nl80211_spurious_frame(bss, tb, 1); 2430 break; 2431 default: 2432 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2433 "(cmd=%d)", gnlh->cmd); 2434 break; 2435 } 2436 2437 return NL_SKIP; 2438} 2439 2440 2441static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2442 void *handle) 2443{ 2444 struct nl_cb *cb = eloop_ctx; 2445 2446 wpa_printf(MSG_DEBUG, "nl80211: Event message available"); 2447 2448 nl_recvmsgs(handle, cb); 2449} 2450 2451 2452/** 2453 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2454 * @priv: driver_nl80211 private data 2455 * @alpha2_arg: country to which to switch to 2456 * Returns: 0 on success, -1 on failure 2457 * 2458 * This asks nl80211 to set the regulatory domain for given 2459 * country ISO / IEC alpha2. 2460 */ 2461static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2462{ 2463 struct i802_bss *bss = priv; 2464 struct wpa_driver_nl80211_data *drv = bss->drv; 2465 char alpha2[3]; 2466 struct nl_msg *msg; 2467 2468 msg = nlmsg_alloc(); 2469 if (!msg) 2470 return -ENOMEM; 2471 2472 alpha2[0] = alpha2_arg[0]; 2473 alpha2[1] = alpha2_arg[1]; 2474 alpha2[2] = '\0'; 2475 2476 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2477 2478 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2479 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2480 return -EINVAL; 2481 return 0; 2482nla_put_failure: 2483 nlmsg_free(msg); 2484 return -EINVAL; 2485} 2486 2487 2488static int protocol_feature_handler(struct nl_msg *msg, void *arg) 2489{ 2490 u32 *feat = arg; 2491 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 2492 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2493 2494 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2495 genlmsg_attrlen(gnlh, 0), NULL); 2496 2497 if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]) 2498 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]); 2499 2500 return NL_SKIP; 2501} 2502 2503 2504static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv) 2505{ 2506 u32 feat = 0; 2507 struct nl_msg *msg; 2508 2509 msg = nlmsg_alloc(); 2510 if (!msg) 2511 goto nla_put_failure; 2512 2513 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES); 2514 if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0) 2515 return feat; 2516 2517 msg = NULL; 2518nla_put_failure: 2519 nlmsg_free(msg); 2520 return 0; 2521} 2522 2523 2524struct wiphy_info_data { 2525 struct wpa_driver_capa *capa; 2526 2527 unsigned int error:1; 2528 unsigned int device_ap_sme:1; 2529 unsigned int poll_command_supported:1; 2530 unsigned int data_tx_status:1; 2531 unsigned int monitor_supported:1; 2532 unsigned int auth_supported:1; 2533 unsigned int connect_supported:1; 2534 unsigned int p2p_go_supported:1; 2535 unsigned int p2p_client_supported:1; 2536 unsigned int p2p_concurrent:1; 2537 unsigned int p2p_multichan_concurrent:1; 2538}; 2539 2540 2541static unsigned int probe_resp_offload_support(int supp_protocols) 2542{ 2543 unsigned int prot = 0; 2544 2545 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 2546 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 2547 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 2548 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 2549 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 2550 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 2551 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 2552 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 2553 2554 return prot; 2555} 2556 2557 2558static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, 2559 struct nlattr *tb) 2560{ 2561 struct nlattr *nl_mode; 2562 int i; 2563 2564 if (tb == NULL) 2565 return; 2566 2567 nla_for_each_nested(nl_mode, tb, i) { 2568 switch (nla_type(nl_mode)) { 2569 case NL80211_IFTYPE_AP: 2570 info->capa->flags |= WPA_DRIVER_FLAGS_AP; 2571 break; 2572 case NL80211_IFTYPE_P2P_GO: 2573 info->p2p_go_supported = 1; 2574 break; 2575 case NL80211_IFTYPE_P2P_CLIENT: 2576 info->p2p_client_supported = 1; 2577 break; 2578 case NL80211_IFTYPE_MONITOR: 2579 info->monitor_supported = 1; 2580 break; 2581 } 2582 } 2583} 2584 2585 2586static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, 2587 struct nlattr *nl_combi) 2588{ 2589 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 2590 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 2591 struct nlattr *nl_limit, *nl_mode; 2592 int err, rem_limit, rem_mode; 2593 int combination_has_p2p = 0, combination_has_mgd = 0; 2594 static struct nla_policy 2595 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 2596 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 2597 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 2598 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 2599 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 2600 }, 2601 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 2602 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 2603 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 2604 }; 2605 2606 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 2607 nl_combi, iface_combination_policy); 2608 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 2609 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 2610 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 2611 return 0; /* broken combination */ 2612 2613 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], 2614 rem_limit) { 2615 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, 2616 nl_limit, iface_limit_policy); 2617 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 2618 return 0; /* broken combination */ 2619 2620 nla_for_each_nested(nl_mode, 2621 tb_limit[NL80211_IFACE_LIMIT_TYPES], 2622 rem_mode) { 2623 int ift = nla_type(nl_mode); 2624 if (ift == NL80211_IFTYPE_P2P_GO || 2625 ift == NL80211_IFTYPE_P2P_CLIENT) 2626 combination_has_p2p = 1; 2627 if (ift == NL80211_IFTYPE_STATION) 2628 combination_has_mgd = 1; 2629 } 2630 if (combination_has_p2p && combination_has_mgd) 2631 break; 2632 } 2633 2634 if (combination_has_p2p && combination_has_mgd) { 2635 info->p2p_concurrent = 1; 2636 if (nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) > 1) 2637 info->p2p_multichan_concurrent = 1; 2638 return 1; 2639 } 2640 2641 return 0; 2642} 2643 2644 2645static void wiphy_info_iface_comb(struct wiphy_info_data *info, 2646 struct nlattr *tb) 2647{ 2648 struct nlattr *nl_combi; 2649 int rem_combi; 2650 2651 if (tb == NULL) 2652 return; 2653 2654 nla_for_each_nested(nl_combi, tb, rem_combi) { 2655 if (wiphy_info_iface_comb_process(info, nl_combi) > 0) 2656 break; 2657 } 2658} 2659 2660 2661static void wiphy_info_supp_cmds(struct wiphy_info_data *info, 2662 struct nlattr *tb) 2663{ 2664 struct nlattr *nl_cmd; 2665 int i; 2666 2667 if (tb == NULL) 2668 return; 2669 2670 nla_for_each_nested(nl_cmd, tb, i) { 2671 switch (nla_get_u32(nl_cmd)) { 2672 case NL80211_CMD_AUTHENTICATE: 2673 info->auth_supported = 1; 2674 break; 2675 case NL80211_CMD_CONNECT: 2676 info->connect_supported = 1; 2677 break; 2678 case NL80211_CMD_START_SCHED_SCAN: 2679 info->capa->sched_scan_supported = 1; 2680 break; 2681 case NL80211_CMD_PROBE_CLIENT: 2682 info->poll_command_supported = 1; 2683 break; 2684 } 2685 } 2686} 2687 2688 2689static void wiphy_info_max_roc(struct wpa_driver_capa *capa, 2690 struct nlattr *tb) 2691{ 2692 /* default to 5000 since early versions of mac80211 don't set it */ 2693 capa->max_remain_on_chan = 5000; 2694 2695 if (tb) 2696 capa->max_remain_on_chan = nla_get_u32(tb); 2697} 2698 2699 2700static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, 2701 struct nlattr *ext_setup) 2702{ 2703 if (tdls == NULL) 2704 return; 2705 2706 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 2707 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 2708 2709 if (ext_setup) { 2710 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 2711 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 2712 } 2713} 2714 2715 2716static void wiphy_info_feature_flags(struct wiphy_info_data *info, 2717 struct nlattr *tb) 2718{ 2719 u32 flags; 2720 struct wpa_driver_capa *capa = info->capa; 2721 2722 if (tb == NULL) 2723 return; 2724 2725 flags = nla_get_u32(tb); 2726 2727 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2728 info->data_tx_status = 1; 2729 2730 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 2731 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 2732 2733 if (flags & NL80211_FEATURE_SAE) 2734 capa->flags |= WPA_DRIVER_FLAGS_SAE; 2735 2736 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 2737 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 2738} 2739 2740 2741static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, 2742 struct nlattr *tb) 2743{ 2744 u32 protocols; 2745 2746 if (tb == NULL) 2747 return; 2748 2749 protocols = nla_get_u32(tb); 2750 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " 2751 "mode"); 2752 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2753 capa->probe_resp_offloads = probe_resp_offload_support(protocols); 2754} 2755 2756 2757static int wiphy_info_handler(struct nl_msg *msg, void *arg) 2758{ 2759 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2760 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2761 struct wiphy_info_data *info = arg; 2762 struct wpa_driver_capa *capa = info->capa; 2763 2764 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2765 genlmsg_attrlen(gnlh, 0), NULL); 2766 2767 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 2768 capa->max_scan_ssids = 2769 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 2770 2771 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 2772 capa->max_sched_scan_ssids = 2773 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 2774 2775 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 2776 capa->max_match_sets = 2777 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 2778 2779 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); 2780 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); 2781 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); 2782 2783 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 2784 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 2785 "off-channel TX"); 2786 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 2787 } 2788 2789 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 2790 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 2791 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 2792 } 2793 2794 wiphy_info_max_roc(capa, 2795 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 2796 2797 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 2798 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 2799 2800 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], 2801 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); 2802 2803 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2804 info->device_ap_sme = 1; 2805 2806 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); 2807 wiphy_info_probe_resp_offload(capa, 2808 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2809 2810 return NL_SKIP; 2811} 2812 2813 2814static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2815 struct wiphy_info_data *info) 2816{ 2817 u32 feat; 2818 struct nl_msg *msg; 2819 2820 os_memset(info, 0, sizeof(*info)); 2821 info->capa = &drv->capa; 2822 2823 msg = nlmsg_alloc(); 2824 if (!msg) 2825 return -1; 2826 2827 feat = get_nl80211_protocol_features(drv); 2828 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 2829 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 2830 else 2831 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2832 2833 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 2834 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2835 2836 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 2837 return -1; 2838 2839 if (info->auth_supported) 2840 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 2841 else if (!info->connect_supported) { 2842 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 2843 "authentication/association or connect commands"); 2844 info->error = 1; 2845 } 2846 2847 if (info->p2p_go_supported && info->p2p_client_supported) 2848 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 2849 if (info->p2p_concurrent) { 2850 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 2851 "interface (driver advertised support)"); 2852 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 2853 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 2854 } 2855 if (info->p2p_multichan_concurrent) { 2856 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 2857 "concurrent (driver advertised support)"); 2858 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 2859 } 2860 return 0; 2861nla_put_failure: 2862 nlmsg_free(msg); 2863 return -1; 2864} 2865 2866 2867static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2868{ 2869 struct wiphy_info_data info; 2870 if (wpa_driver_nl80211_get_info(drv, &info)) 2871 return -1; 2872 2873 if (info.error) 2874 return -1; 2875 2876 drv->has_capability = 1; 2877 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2878 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2879 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2880 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2881 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2882 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2883 WPA_DRIVER_CAPA_ENC_WEP104 | 2884 WPA_DRIVER_CAPA_ENC_TKIP | 2885 WPA_DRIVER_CAPA_ENC_CCMP; 2886 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2887 WPA_DRIVER_AUTH_SHARED | 2888 WPA_DRIVER_AUTH_LEAP; 2889 2890 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2891 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2892 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2893 2894 if (!info.device_ap_sme) { 2895 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2896 2897 /* 2898 * No AP SME is currently assumed to also indicate no AP MLME 2899 * in the driver/firmware. 2900 */ 2901 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 2902 } 2903 2904 drv->device_ap_sme = info.device_ap_sme; 2905 drv->poll_command_supported = info.poll_command_supported; 2906 drv->data_tx_status = info.data_tx_status; 2907 2908#ifdef ANDROID_P2P 2909 if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) { 2910 /* Driver is new enough to support monitorless mode*/ 2911 wpa_printf(MSG_DEBUG, "nl80211: Driver is new " 2912 "enough to support monitor-less mode"); 2913 drv->use_monitor = 0; 2914 } 2915#else 2916 /* 2917 * If poll command and tx status are supported, mac80211 is new enough 2918 * to have everything we need to not need monitor interfaces. 2919 */ 2920 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 2921#endif 2922 2923 if (drv->device_ap_sme && drv->use_monitor) { 2924 /* 2925 * Non-mac80211 drivers may not support monitor interface. 2926 * Make sure we do not get stuck with incorrect capability here 2927 * by explicitly testing this. 2928 */ 2929 if (!info.monitor_supported) { 2930 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 2931 "with device_ap_sme since no monitor mode " 2932 "support detected"); 2933 drv->use_monitor = 0; 2934 } 2935 } 2936 2937 /* 2938 * If we aren't going to use monitor interfaces, but the 2939 * driver doesn't support data TX status, we won't get TX 2940 * status for EAPOL frames. 2941 */ 2942 if (!drv->use_monitor && !info.data_tx_status) 2943 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2944 2945 return 0; 2946} 2947 2948 2949#ifdef ANDROID 2950static int android_genl_ctrl_resolve(struct nl_handle *handle, 2951 const char *name) 2952{ 2953 /* 2954 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 2955 * need to work around that. 2956 */ 2957 struct nl_cache *cache = NULL; 2958 struct genl_family *nl80211 = NULL; 2959 int id = -1; 2960 2961 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 2962 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 2963 "netlink cache"); 2964 goto fail; 2965 } 2966 2967 nl80211 = genl_ctrl_search_by_name(cache, name); 2968 if (nl80211 == NULL) 2969 goto fail; 2970 2971 id = genl_family_get_id(nl80211); 2972 2973fail: 2974 if (nl80211) 2975 genl_family_put(nl80211); 2976 if (cache) 2977 nl_cache_free(cache); 2978 2979 return id; 2980} 2981#define genl_ctrl_resolve android_genl_ctrl_resolve 2982#endif /* ANDROID */ 2983 2984 2985static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 2986{ 2987 int ret; 2988 2989 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2990 if (global->nl_cb == NULL) { 2991 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 2992 "callbacks"); 2993 return -1; 2994 } 2995 2996 global->nl = nl_create_handle(global->nl_cb, "nl"); 2997 if (global->nl == NULL) 2998 goto err; 2999 3000 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 3001 if (global->nl80211_id < 0) { 3002 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 3003 "found"); 3004 goto err; 3005 } 3006 3007 global->nl_event = nl_create_handle(global->nl_cb, "event"); 3008 if (global->nl_event == NULL) 3009 goto err; 3010 3011 ret = nl_get_multicast_id(global, "nl80211", "scan"); 3012 if (ret >= 0) 3013 ret = nl_socket_add_membership(global->nl_event, ret); 3014 if (ret < 0) { 3015 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3016 "membership for scan events: %d (%s)", 3017 ret, strerror(-ret)); 3018 goto err; 3019 } 3020 3021 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 3022 if (ret >= 0) 3023 ret = nl_socket_add_membership(global->nl_event, ret); 3024 if (ret < 0) { 3025 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3026 "membership for mlme events: %d (%s)", 3027 ret, strerror(-ret)); 3028 goto err; 3029 } 3030 3031 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 3032 if (ret >= 0) 3033 ret = nl_socket_add_membership(global->nl_event, ret); 3034 if (ret < 0) { 3035 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 3036 "membership for regulatory events: %d (%s)", 3037 ret, strerror(-ret)); 3038 /* Continue without regulatory events */ 3039 } 3040 3041 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3042 no_seq_check, NULL); 3043 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3044 process_global_event, global); 3045 3046 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 3047 wpa_driver_nl80211_event_receive, 3048 global->nl_cb, global->nl_event); 3049 3050 return 0; 3051 3052err: 3053 nl_destroy_handles(&global->nl_event); 3054 nl_destroy_handles(&global->nl); 3055 nl_cb_put(global->nl_cb); 3056 global->nl_cb = NULL; 3057 return -1; 3058} 3059 3060 3061static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 3062{ 3063 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3064 if (!drv->nl_cb) { 3065 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 3066 return -1; 3067 } 3068 3069 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3070 no_seq_check, NULL); 3071 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3072 process_drv_event, drv); 3073 3074 return 0; 3075} 3076 3077 3078static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 3079{ 3080 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 3081 /* 3082 * This may be for any interface; use ifdown event to disable 3083 * interface. 3084 */ 3085} 3086 3087 3088static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 3089{ 3090 struct wpa_driver_nl80211_data *drv = ctx; 3091 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 3092 if (linux_set_iface_flags(drv->global->ioctl_sock, 3093 drv->first_bss.ifname, 1)) { 3094 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 3095 "after rfkill unblock"); 3096 return; 3097 } 3098 /* rtnetlink ifup handler will report interface as enabled */ 3099} 3100 3101 3102static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 3103{ 3104 /* Find phy (radio) to which this interface belongs */ 3105 char buf[90], *pos; 3106 int f, rv; 3107 3108 drv->phyname[0] = '\0'; 3109 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 3110 drv->first_bss.ifname); 3111 f = open(buf, O_RDONLY); 3112 if (f < 0) { 3113 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 3114 buf, strerror(errno)); 3115 return; 3116 } 3117 3118 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 3119 close(f); 3120 if (rv < 0) { 3121 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 3122 buf, strerror(errno)); 3123 return; 3124 } 3125 3126 drv->phyname[rv] = '\0'; 3127 pos = os_strchr(drv->phyname, '\n'); 3128 if (pos) 3129 *pos = '\0'; 3130 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 3131 drv->first_bss.ifname, drv->phyname); 3132} 3133 3134 3135static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 3136 void *eloop_ctx, 3137 void *handle) 3138{ 3139 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3140 u8 data[2048]; 3141 struct msghdr msg; 3142 struct iovec entry; 3143 u8 control[512]; 3144 struct cmsghdr *cmsg; 3145 int res, found_ee = 0, found_wifi = 0, acked = 0; 3146 union wpa_event_data event; 3147 3148 memset(&msg, 0, sizeof(msg)); 3149 msg.msg_iov = &entry; 3150 msg.msg_iovlen = 1; 3151 entry.iov_base = data; 3152 entry.iov_len = sizeof(data); 3153 msg.msg_control = &control; 3154 msg.msg_controllen = sizeof(control); 3155 3156 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 3157 /* if error or not fitting 802.3 header, return */ 3158 if (res < 14) 3159 return; 3160 3161 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 3162 { 3163 if (cmsg->cmsg_level == SOL_SOCKET && 3164 cmsg->cmsg_type == SCM_WIFI_STATUS) { 3165 int *ack; 3166 3167 found_wifi = 1; 3168 ack = (void *)CMSG_DATA(cmsg); 3169 acked = *ack; 3170 } 3171 3172 if (cmsg->cmsg_level == SOL_PACKET && 3173 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 3174 struct sock_extended_err *err = 3175 (struct sock_extended_err *)CMSG_DATA(cmsg); 3176 3177 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 3178 found_ee = 1; 3179 } 3180 } 3181 3182 if (!found_ee || !found_wifi) 3183 return; 3184 3185 memset(&event, 0, sizeof(event)); 3186 event.eapol_tx_status.dst = data; 3187 event.eapol_tx_status.data = data + 14; 3188 event.eapol_tx_status.data_len = res - 14; 3189 event.eapol_tx_status.ack = acked; 3190 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 3191} 3192 3193 3194static int nl80211_init_bss(struct i802_bss *bss) 3195{ 3196 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3197 if (!bss->nl_cb) 3198 return -1; 3199 3200 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3201 no_seq_check, NULL); 3202 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3203 process_bss_event, bss); 3204 3205 return 0; 3206} 3207 3208 3209static void nl80211_destroy_bss(struct i802_bss *bss) 3210{ 3211 nl_cb_put(bss->nl_cb); 3212 bss->nl_cb = NULL; 3213} 3214 3215 3216/** 3217 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 3218 * @ctx: context to be used when calling wpa_supplicant functions, 3219 * e.g., wpa_supplicant_event() 3220 * @ifname: interface name, e.g., wlan0 3221 * @global_priv: private driver global data from global_init() 3222 * Returns: Pointer to private data, %NULL on failure 3223 */ 3224static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 3225 void *global_priv) 3226{ 3227 struct wpa_driver_nl80211_data *drv; 3228 struct rfkill_config *rcfg; 3229 struct i802_bss *bss; 3230 3231 if (global_priv == NULL) 3232 return NULL; 3233 drv = os_zalloc(sizeof(*drv)); 3234 if (drv == NULL) 3235 return NULL; 3236 drv->global = global_priv; 3237 drv->ctx = ctx; 3238 bss = &drv->first_bss; 3239 bss->drv = drv; 3240 bss->ctx = ctx; 3241 3242 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 3243 drv->monitor_ifidx = -1; 3244 drv->monitor_sock = -1; 3245 drv->eapol_tx_sock = -1; 3246 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3247 3248 if (wpa_driver_nl80211_init_nl(drv)) { 3249 os_free(drv); 3250 return NULL; 3251 } 3252 3253 if (nl80211_init_bss(bss)) 3254 goto failed; 3255 3256 nl80211_get_phy_name(drv); 3257 3258 rcfg = os_zalloc(sizeof(*rcfg)); 3259 if (rcfg == NULL) 3260 goto failed; 3261 rcfg->ctx = drv; 3262 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3263 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3264 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3265 drv->rfkill = rfkill_init(rcfg); 3266 if (drv->rfkill == NULL) { 3267 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3268 os_free(rcfg); 3269 } 3270 3271 if (wpa_driver_nl80211_finish_drv_init(drv)) 3272 goto failed; 3273 3274 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3275 if (drv->eapol_tx_sock < 0) 3276 goto failed; 3277 3278 if (drv->data_tx_status) { 3279 int enabled = 1; 3280 3281 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3282 &enabled, sizeof(enabled)) < 0) { 3283 wpa_printf(MSG_DEBUG, 3284 "nl80211: wifi status sockopt failed\n"); 3285 drv->data_tx_status = 0; 3286 if (!drv->use_monitor) 3287 drv->capa.flags &= 3288 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3289 } else { 3290 eloop_register_read_sock(drv->eapol_tx_sock, 3291 wpa_driver_nl80211_handle_eapol_tx_status, 3292 drv, NULL); 3293 } 3294 } 3295 3296 if (drv->global) { 3297 dl_list_add(&drv->global->interfaces, &drv->list); 3298 drv->in_interface_list = 1; 3299 } 3300 3301 return bss; 3302 3303failed: 3304 wpa_driver_nl80211_deinit(bss); 3305 return NULL; 3306} 3307 3308 3309static int nl80211_register_frame(struct i802_bss *bss, 3310 struct nl_handle *nl_handle, 3311 u16 type, const u8 *match, size_t match_len) 3312{ 3313 struct wpa_driver_nl80211_data *drv = bss->drv; 3314 struct nl_msg *msg; 3315 int ret = -1; 3316 3317 msg = nlmsg_alloc(); 3318 if (!msg) 3319 return -1; 3320 3321 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3322 type, nl_handle); 3323 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3324 match, match_len); 3325 3326 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3327 3328 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3329 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3330 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3331 3332 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3333 msg = NULL; 3334 if (ret) { 3335 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3336 "failed (type=%u): ret=%d (%s)", 3337 type, ret, strerror(-ret)); 3338 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3339 match, match_len); 3340 goto nla_put_failure; 3341 } 3342 ret = 0; 3343nla_put_failure: 3344 nlmsg_free(msg); 3345 return ret; 3346} 3347 3348 3349static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3350{ 3351 struct wpa_driver_nl80211_data *drv = bss->drv; 3352 3353 if (bss->nl_mgmt) { 3354 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3355 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3356 return -1; 3357 } 3358 3359 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3360 if (bss->nl_mgmt == NULL) 3361 return -1; 3362 3363 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3364 wpa_driver_nl80211_event_receive, bss->nl_cb, 3365 bss->nl_mgmt); 3366 3367 return 0; 3368} 3369 3370 3371static int nl80211_register_action_frame(struct i802_bss *bss, 3372 const u8 *match, size_t match_len) 3373{ 3374 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3375 return nl80211_register_frame(bss, bss->nl_mgmt, 3376 type, match, match_len); 3377} 3378 3379 3380static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3381{ 3382 struct wpa_driver_nl80211_data *drv = bss->drv; 3383 3384 if (nl80211_alloc_mgmt_handle(bss)) 3385 return -1; 3386 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3387 "handle %p", bss->nl_mgmt); 3388 3389#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3390 /* GAS Initial Request */ 3391 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3392 return -1; 3393 /* GAS Initial Response */ 3394 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3395 return -1; 3396 /* GAS Comeback Request */ 3397 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3398 return -1; 3399 /* GAS Comeback Response */ 3400 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3401 return -1; 3402#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3403#ifdef CONFIG_P2P 3404 /* P2P Public Action */ 3405 if (nl80211_register_action_frame(bss, 3406 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3407 6) < 0) 3408 return -1; 3409 /* P2P Action */ 3410 if (nl80211_register_action_frame(bss, 3411 (u8 *) "\x7f\x50\x6f\x9a\x09", 3412 5) < 0) 3413 return -1; 3414#endif /* CONFIG_P2P */ 3415#ifdef CONFIG_IEEE80211W 3416 /* SA Query Response */ 3417 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3418 return -1; 3419#endif /* CONFIG_IEEE80211W */ 3420#ifdef CONFIG_TDLS 3421 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3422 /* TDLS Discovery Response */ 3423 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3424 0) 3425 return -1; 3426 } 3427#endif /* CONFIG_TDLS */ 3428 3429 /* FT Action frames */ 3430 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3431 return -1; 3432 else 3433 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3434 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3435 3436 /* WNM - BSS Transition Management Request */ 3437 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3438 return -1; 3439 /* WNM-Sleep Mode Response */ 3440 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0) 3441 return -1; 3442 3443 return 0; 3444} 3445 3446 3447static int nl80211_register_spurious_class3(struct i802_bss *bss) 3448{ 3449 struct wpa_driver_nl80211_data *drv = bss->drv; 3450 struct nl_msg *msg; 3451 int ret = -1; 3452 3453 msg = nlmsg_alloc(); 3454 if (!msg) 3455 return -1; 3456 3457 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3458 3459 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3460 3461 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3462 msg = NULL; 3463 if (ret) { 3464 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3465 "failed: ret=%d (%s)", 3466 ret, strerror(-ret)); 3467 goto nla_put_failure; 3468 } 3469 ret = 0; 3470nla_put_failure: 3471 nlmsg_free(msg); 3472 return ret; 3473} 3474 3475 3476static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3477{ 3478 static const int stypes[] = { 3479 WLAN_FC_STYPE_AUTH, 3480 WLAN_FC_STYPE_ASSOC_REQ, 3481 WLAN_FC_STYPE_REASSOC_REQ, 3482 WLAN_FC_STYPE_DISASSOC, 3483 WLAN_FC_STYPE_DEAUTH, 3484 WLAN_FC_STYPE_ACTION, 3485 WLAN_FC_STYPE_PROBE_REQ, 3486/* Beacon doesn't work as mac80211 doesn't currently allow 3487 * it, but it wouldn't really be the right thing anyway as 3488 * it isn't per interface ... maybe just dump the scan 3489 * results periodically for OLBC? 3490 */ 3491// WLAN_FC_STYPE_BEACON, 3492 }; 3493 unsigned int i; 3494 3495 if (nl80211_alloc_mgmt_handle(bss)) 3496 return -1; 3497 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3498 "handle %p", bss->nl_mgmt); 3499 3500 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3501 if (nl80211_register_frame(bss, bss->nl_mgmt, 3502 (WLAN_FC_TYPE_MGMT << 2) | 3503 (stypes[i] << 4), 3504 NULL, 0) < 0) { 3505 goto out_err; 3506 } 3507 } 3508 3509 if (nl80211_register_spurious_class3(bss)) 3510 goto out_err; 3511 3512 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3513 goto out_err; 3514 3515 return 0; 3516 3517out_err: 3518 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3519 nl_destroy_handles(&bss->nl_mgmt); 3520 return -1; 3521} 3522 3523 3524static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3525{ 3526 if (nl80211_alloc_mgmt_handle(bss)) 3527 return -1; 3528 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3529 "handle %p (device SME)", bss->nl_mgmt); 3530 3531 if (nl80211_register_frame(bss, bss->nl_mgmt, 3532 (WLAN_FC_TYPE_MGMT << 2) | 3533 (WLAN_FC_STYPE_ACTION << 4), 3534 NULL, 0) < 0) 3535 goto out_err; 3536 3537 return 0; 3538 3539out_err: 3540 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3541 nl_destroy_handles(&bss->nl_mgmt); 3542 return -1; 3543} 3544 3545 3546static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3547{ 3548 if (bss->nl_mgmt == NULL) 3549 return; 3550 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3551 "(%s)", bss->nl_mgmt, reason); 3552 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3553 nl_destroy_handles(&bss->nl_mgmt); 3554 3555 nl80211_put_wiphy_data_ap(bss); 3556} 3557 3558 3559static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3560{ 3561 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3562} 3563 3564 3565static int 3566wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3567{ 3568 struct i802_bss *bss = &drv->first_bss; 3569 int send_rfkill_event = 0; 3570 3571 drv->ifindex = if_nametoindex(bss->ifname); 3572 drv->first_bss.ifindex = drv->ifindex; 3573 3574#ifndef HOSTAPD 3575 /* 3576 * Make sure the interface starts up in station mode unless this is a 3577 * dynamically added interface (e.g., P2P) that was already configured 3578 * with proper iftype. 3579 */ 3580 if (drv->ifindex != drv->global->if_add_ifindex && 3581 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3582 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3583 "use managed mode"); 3584 return -1; 3585 } 3586 3587 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3588 if (rfkill_is_blocked(drv->rfkill)) { 3589 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3590 "interface '%s' due to rfkill", 3591 bss->ifname); 3592 drv->if_disabled = 1; 3593 send_rfkill_event = 1; 3594 } else { 3595 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3596 "interface '%s' UP", bss->ifname); 3597 return -1; 3598 } 3599 } 3600 3601 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3602 1, IF_OPER_DORMANT); 3603#endif /* HOSTAPD */ 3604 3605 if (wpa_driver_nl80211_capa(drv)) 3606 return -1; 3607 3608 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3609 bss->addr)) 3610 return -1; 3611 3612 if (send_rfkill_event) { 3613 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3614 drv, drv->ctx); 3615 } 3616 3617 return 0; 3618} 3619 3620 3621static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3622{ 3623 struct nl_msg *msg; 3624 3625 msg = nlmsg_alloc(); 3626 if (!msg) 3627 return -ENOMEM; 3628 3629 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3630 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3631 3632 return send_and_recv_msgs(drv, msg, NULL, NULL); 3633 nla_put_failure: 3634 nlmsg_free(msg); 3635 return -ENOBUFS; 3636} 3637 3638 3639/** 3640 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3641 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3642 * 3643 * Shut down driver interface and processing of driver events. Free 3644 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3645 */ 3646static void wpa_driver_nl80211_deinit(struct i802_bss *bss) 3647{ 3648 struct wpa_driver_nl80211_data *drv = bss->drv; 3649 3650 bss->in_deinit = 1; 3651 if (drv->data_tx_status) 3652 eloop_unregister_read_sock(drv->eapol_tx_sock); 3653 if (drv->eapol_tx_sock >= 0) 3654 close(drv->eapol_tx_sock); 3655 3656 if (bss->nl_preq) 3657 wpa_driver_nl80211_probe_req_report(bss, 0); 3658 if (bss->added_if_into_bridge) { 3659 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3660 bss->ifname) < 0) 3661 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3662 "interface %s from bridge %s: %s", 3663 bss->ifname, bss->brname, strerror(errno)); 3664 } 3665 if (bss->added_bridge) { 3666 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3667 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3668 "bridge %s: %s", 3669 bss->brname, strerror(errno)); 3670 } 3671 3672 nl80211_remove_monitor_interface(drv); 3673 3674 if (is_ap_interface(drv->nlmode)) 3675 wpa_driver_nl80211_del_beacon(drv); 3676 3677#ifdef HOSTAPD 3678 if (drv->last_freq_ht) { 3679 /* Clear HT flags from the driver */ 3680 struct hostapd_freq_params freq; 3681 os_memset(&freq, 0, sizeof(freq)); 3682 freq.freq = drv->last_freq; 3683 wpa_driver_nl80211_set_freq(bss, &freq); 3684 } 3685 3686 if (drv->eapol_sock >= 0) { 3687 eloop_unregister_read_sock(drv->eapol_sock); 3688 close(drv->eapol_sock); 3689 } 3690 3691 if (drv->if_indices != drv->default_if_indices) 3692 os_free(drv->if_indices); 3693#endif /* HOSTAPD */ 3694 3695 if (drv->disabled_11b_rates) 3696 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3697 3698 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3699 IF_OPER_UP); 3700 rfkill_deinit(drv->rfkill); 3701 3702 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3703 3704 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3705 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3706 nl80211_mgmt_unsubscribe(bss, "deinit"); 3707 3708 nl_cb_put(drv->nl_cb); 3709 3710 nl80211_destroy_bss(&drv->first_bss); 3711 3712 os_free(drv->filter_ssids); 3713 3714 os_free(drv->auth_ie); 3715 3716 if (drv->in_interface_list) 3717 dl_list_del(&drv->list); 3718 3719 os_free(drv); 3720} 3721 3722 3723/** 3724 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3725 * @eloop_ctx: Driver private data 3726 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3727 * 3728 * This function can be used as registered timeout when starting a scan to 3729 * generate a scan completed event if the driver does not report this. 3730 */ 3731static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3732{ 3733 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3734 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3735 wpa_driver_nl80211_set_mode(&drv->first_bss, 3736 drv->ap_scan_as_station); 3737 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3738 } 3739 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3740 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3741} 3742 3743 3744static struct nl_msg * 3745nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, 3746 struct wpa_driver_scan_params *params) 3747{ 3748 struct nl_msg *msg; 3749 int err; 3750 size_t i; 3751 3752 msg = nlmsg_alloc(); 3753 if (!msg) 3754 return NULL; 3755 3756 nl80211_cmd(drv, msg, 0, cmd); 3757 3758 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0) 3759 goto fail; 3760 3761 if (params->num_ssids) { 3762 struct nl_msg *ssids = nlmsg_alloc(); 3763 if (ssids == NULL) 3764 goto fail; 3765 for (i = 0; i < params->num_ssids; i++) { 3766 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3767 params->ssids[i].ssid, 3768 params->ssids[i].ssid_len); 3769 if (nla_put(ssids, i + 1, params->ssids[i].ssid_len, 3770 params->ssids[i].ssid) < 0) { 3771 nlmsg_free(ssids); 3772 goto fail; 3773 } 3774 } 3775 err = nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3776 nlmsg_free(ssids); 3777 if (err < 0) 3778 goto fail; 3779 } 3780 3781 if (params->extra_ies) { 3782 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3783 params->extra_ies, params->extra_ies_len); 3784 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, 3785 params->extra_ies) < 0) 3786 goto fail; 3787 } 3788 3789 if (params->freqs) { 3790 struct nl_msg *freqs = nlmsg_alloc(); 3791 if (freqs == NULL) 3792 goto fail; 3793 for (i = 0; params->freqs[i]; i++) { 3794 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3795 "MHz", params->freqs[i]); 3796 if (nla_put_u32(freqs, i + 1, params->freqs[i]) < 0) { 3797 nlmsg_free(freqs); 3798 goto fail; 3799 } 3800 } 3801 err = nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, 3802 freqs); 3803 nlmsg_free(freqs); 3804 if (err < 0) 3805 goto fail; 3806 } 3807 3808 os_free(drv->filter_ssids); 3809 drv->filter_ssids = params->filter_ssids; 3810 params->filter_ssids = NULL; 3811 drv->num_filter_ssids = params->num_filter_ssids; 3812 3813 return msg; 3814 3815fail: 3816 nlmsg_free(msg); 3817 return NULL; 3818} 3819 3820 3821/** 3822 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3823 * @bss: Pointer to private driver data from wpa_driver_nl80211_init() 3824 * @params: Scan parameters 3825 * Returns: 0 on success, -1 on failure 3826 */ 3827static int wpa_driver_nl80211_scan(struct i802_bss *bss, 3828 struct wpa_driver_scan_params *params) 3829{ 3830 struct wpa_driver_nl80211_data *drv = bss->drv; 3831 int ret = -1, timeout; 3832 struct nl_msg *msg, *rates = NULL; 3833 3834 drv->scan_for_auth = 0; 3835 3836 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params); 3837 if (!msg) 3838 return -1; 3839 3840 if (params->p2p_probe) { 3841 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 3842 3843 rates = nlmsg_alloc(); 3844 if (rates == NULL) 3845 goto nla_put_failure; 3846 3847 /* 3848 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3849 * by masking out everything else apart from the OFDM rates 6, 3850 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3851 * rates are left enabled. 3852 */ 3853 NLA_PUT(rates, NL80211_BAND_2GHZ, 8, 3854 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3855 if (nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates) < 3856 0) 3857 goto nla_put_failure; 3858 3859 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3860 } 3861 3862 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3863 msg = NULL; 3864 if (ret) { 3865 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3866 "(%s)", ret, strerror(-ret)); 3867#ifdef HOSTAPD 3868 if (is_ap_interface(drv->nlmode)) { 3869 /* 3870 * mac80211 does not allow scan requests in AP mode, so 3871 * try to do this in station mode. 3872 */ 3873 if (wpa_driver_nl80211_set_mode( 3874 bss, NL80211_IFTYPE_STATION)) 3875 goto nla_put_failure; 3876 3877 if (wpa_driver_nl80211_scan(bss, params)) { 3878 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3879 goto nla_put_failure; 3880 } 3881 3882 /* Restore AP mode when processing scan results */ 3883 drv->ap_scan_as_station = drv->nlmode; 3884 ret = 0; 3885 } else 3886 goto nla_put_failure; 3887#else /* HOSTAPD */ 3888 goto nla_put_failure; 3889#endif /* HOSTAPD */ 3890 } 3891 3892 /* Not all drivers generate "scan completed" wireless event, so try to 3893 * read results after a timeout. */ 3894 timeout = 10; 3895 if (drv->scan_complete_events) { 3896 /* 3897 * The driver seems to deliver events to notify when scan is 3898 * complete, so use longer timeout to avoid race conditions 3899 * with scanning and following association request. 3900 */ 3901 timeout = 30; 3902 } 3903 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3904 "seconds", ret, timeout); 3905 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3906 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3907 drv, drv->ctx); 3908 3909nla_put_failure: 3910 nlmsg_free(msg); 3911 nlmsg_free(rates); 3912 return ret; 3913} 3914 3915 3916/** 3917 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3918 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3919 * @params: Scan parameters 3920 * @interval: Interval between scan cycles in milliseconds 3921 * Returns: 0 on success, -1 on failure or if not supported 3922 */ 3923static int wpa_driver_nl80211_sched_scan(void *priv, 3924 struct wpa_driver_scan_params *params, 3925 u32 interval) 3926{ 3927 struct i802_bss *bss = priv; 3928 struct wpa_driver_nl80211_data *drv = bss->drv; 3929 int ret = -1; 3930 struct nl_msg *msg; 3931 struct nl_msg *match_set_ssid = NULL, *match_sets = NULL; 3932 struct nl_msg *match_set_rssi = NULL; 3933 size_t i; 3934 3935#ifdef ANDROID 3936 if (!drv->capa.sched_scan_supported) 3937 return android_pno_start(bss, params); 3938#endif /* ANDROID */ 3939 3940 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params); 3941 if (!msg) 3942 goto nla_put_failure; 3943 3944 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 3945 3946 if ((drv->num_filter_ssids && 3947 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || 3948 params->filter_rssi) { 3949 match_sets = nlmsg_alloc(); 3950 if (match_sets == NULL) 3951 goto nla_put_failure; 3952 3953 for (i = 0; i < drv->num_filter_ssids; i++) { 3954 wpa_hexdump_ascii(MSG_MSGDUMP, 3955 "nl80211: Sched scan filter SSID", 3956 drv->filter_ssids[i].ssid, 3957 drv->filter_ssids[i].ssid_len); 3958 3959 match_set_ssid = nlmsg_alloc(); 3960 if (match_set_ssid == NULL) 3961 goto nla_put_failure; 3962 NLA_PUT(match_set_ssid, 3963 NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 3964 drv->filter_ssids[i].ssid_len, 3965 drv->filter_ssids[i].ssid); 3966 3967 if (nla_put_nested(match_sets, i + 1, match_set_ssid) < 3968 0) 3969 goto nla_put_failure; 3970 } 3971 3972 if (params->filter_rssi) { 3973 match_set_rssi = nlmsg_alloc(); 3974 if (match_set_rssi == NULL) 3975 goto nla_put_failure; 3976 NLA_PUT_U32(match_set_rssi, 3977 NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 3978 params->filter_rssi); 3979 wpa_printf(MSG_MSGDUMP, 3980 "nl80211: Sched scan RSSI filter %d dBm", 3981 params->filter_rssi); 3982 if (nla_put_nested(match_sets, 0, match_set_rssi) < 0) 3983 goto nla_put_failure; 3984 } 3985 3986 if (nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH, 3987 match_sets) < 0) 3988 goto nla_put_failure; 3989 } 3990 3991 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3992 3993 /* TODO: if we get an error here, we should fall back to normal scan */ 3994 3995 msg = NULL; 3996 if (ret) { 3997 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 3998 "ret=%d (%s)", ret, strerror(-ret)); 3999 goto nla_put_failure; 4000 } 4001 4002 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 4003 "scan interval %d msec", ret, interval); 4004 4005nla_put_failure: 4006 nlmsg_free(match_set_ssid); 4007 nlmsg_free(match_sets); 4008 nlmsg_free(match_set_rssi); 4009 nlmsg_free(msg); 4010 return ret; 4011} 4012 4013 4014/** 4015 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 4016 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 4017 * Returns: 0 on success, -1 on failure or if not supported 4018 */ 4019static int wpa_driver_nl80211_stop_sched_scan(void *priv) 4020{ 4021 struct i802_bss *bss = priv; 4022 struct wpa_driver_nl80211_data *drv = bss->drv; 4023 int ret = 0; 4024 struct nl_msg *msg; 4025 4026#ifdef ANDROID 4027 if (!drv->capa.sched_scan_supported) 4028 return android_pno_stop(bss); 4029#endif /* ANDROID */ 4030 4031 msg = nlmsg_alloc(); 4032 if (!msg) 4033 return -1; 4034 4035 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 4036 4037 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4038 4039 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4040 msg = NULL; 4041 if (ret) { 4042 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 4043 "ret=%d (%s)", ret, strerror(-ret)); 4044 goto nla_put_failure; 4045 } 4046 4047 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 4048 4049nla_put_failure: 4050 nlmsg_free(msg); 4051 return ret; 4052} 4053 4054 4055static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 4056{ 4057 const u8 *end, *pos; 4058 4059 if (ies == NULL) 4060 return NULL; 4061 4062 pos = ies; 4063 end = ies + ies_len; 4064 4065 while (pos + 1 < end) { 4066 if (pos + 2 + pos[1] > end) 4067 break; 4068 if (pos[0] == ie) 4069 return pos; 4070 pos += 2 + pos[1]; 4071 } 4072 4073 return NULL; 4074} 4075 4076 4077static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 4078 const u8 *ie, size_t ie_len) 4079{ 4080 const u8 *ssid; 4081 size_t i; 4082 4083 if (drv->filter_ssids == NULL) 4084 return 0; 4085 4086 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 4087 if (ssid == NULL) 4088 return 1; 4089 4090 for (i = 0; i < drv->num_filter_ssids; i++) { 4091 if (ssid[1] == drv->filter_ssids[i].ssid_len && 4092 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 4093 0) 4094 return 0; 4095 } 4096 4097 return 1; 4098} 4099 4100 4101static int bss_info_handler(struct nl_msg *msg, void *arg) 4102{ 4103 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 4104 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4105 struct nlattr *bss[NL80211_BSS_MAX + 1]; 4106 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 4107 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 4108 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 4109 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 4110 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 4111 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 4112 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 4113 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 4114 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 4115 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 4116 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 4117 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 4118 }; 4119 struct nl80211_bss_info_arg *_arg = arg; 4120 struct wpa_scan_results *res = _arg->res; 4121 struct wpa_scan_res **tmp; 4122 struct wpa_scan_res *r; 4123 const u8 *ie, *beacon_ie; 4124 size_t ie_len, beacon_ie_len; 4125 u8 *pos; 4126 size_t i; 4127 4128 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4129 genlmsg_attrlen(gnlh, 0), NULL); 4130 if (!tb[NL80211_ATTR_BSS]) 4131 return NL_SKIP; 4132 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 4133 bss_policy)) 4134 return NL_SKIP; 4135 if (bss[NL80211_BSS_STATUS]) { 4136 enum nl80211_bss_status status; 4137 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4138 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4139 bss[NL80211_BSS_FREQUENCY]) { 4140 _arg->assoc_freq = 4141 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4142 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 4143 _arg->assoc_freq); 4144 } 4145 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4146 bss[NL80211_BSS_BSSID]) { 4147 os_memcpy(_arg->assoc_bssid, 4148 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 4149 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 4150 MACSTR, MAC2STR(_arg->assoc_bssid)); 4151 } 4152 } 4153 if (!res) 4154 return NL_SKIP; 4155 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 4156 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4157 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4158 } else { 4159 ie = NULL; 4160 ie_len = 0; 4161 } 4162 if (bss[NL80211_BSS_BEACON_IES]) { 4163 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 4164 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 4165 } else { 4166 beacon_ie = NULL; 4167 beacon_ie_len = 0; 4168 } 4169 4170 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 4171 ie ? ie_len : beacon_ie_len)) 4172 return NL_SKIP; 4173 4174 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 4175 if (r == NULL) 4176 return NL_SKIP; 4177 if (bss[NL80211_BSS_BSSID]) 4178 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 4179 ETH_ALEN); 4180 if (bss[NL80211_BSS_FREQUENCY]) 4181 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4182 if (bss[NL80211_BSS_BEACON_INTERVAL]) 4183 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 4184 if (bss[NL80211_BSS_CAPABILITY]) 4185 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 4186 r->flags |= WPA_SCAN_NOISE_INVALID; 4187 if (bss[NL80211_BSS_SIGNAL_MBM]) { 4188 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 4189 r->level /= 100; /* mBm to dBm */ 4190 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 4191 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 4192 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 4193 r->flags |= WPA_SCAN_QUAL_INVALID; 4194 } else 4195 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 4196 if (bss[NL80211_BSS_TSF]) 4197 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 4198 if (bss[NL80211_BSS_SEEN_MS_AGO]) 4199 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 4200 r->ie_len = ie_len; 4201 pos = (u8 *) (r + 1); 4202 if (ie) { 4203 os_memcpy(pos, ie, ie_len); 4204 pos += ie_len; 4205 } 4206 r->beacon_ie_len = beacon_ie_len; 4207 if (beacon_ie) 4208 os_memcpy(pos, beacon_ie, beacon_ie_len); 4209 4210 if (bss[NL80211_BSS_STATUS]) { 4211 enum nl80211_bss_status status; 4212 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4213 switch (status) { 4214 case NL80211_BSS_STATUS_AUTHENTICATED: 4215 r->flags |= WPA_SCAN_AUTHENTICATED; 4216 break; 4217 case NL80211_BSS_STATUS_ASSOCIATED: 4218 r->flags |= WPA_SCAN_ASSOCIATED; 4219 break; 4220 default: 4221 break; 4222 } 4223 } 4224 4225 /* 4226 * cfg80211 maintains separate BSS table entries for APs if the same 4227 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 4228 * not use frequency as a separate key in the BSS table, so filter out 4229 * duplicated entries. Prefer associated BSS entry in such a case in 4230 * order to get the correct frequency into the BSS table. 4231 */ 4232 for (i = 0; i < res->num; i++) { 4233 const u8 *s1, *s2; 4234 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 4235 continue; 4236 4237 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 4238 res->res[i]->ie_len, WLAN_EID_SSID); 4239 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 4240 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 4241 os_memcmp(s1, s2, 2 + s1[1]) != 0) 4242 continue; 4243 4244 /* Same BSSID,SSID was already included in scan results */ 4245 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 4246 "for " MACSTR, MAC2STR(r->bssid)); 4247 4248 if ((r->flags & WPA_SCAN_ASSOCIATED) && 4249 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 4250 os_free(res->res[i]); 4251 res->res[i] = r; 4252 } else 4253 os_free(r); 4254 return NL_SKIP; 4255 } 4256 4257 tmp = os_realloc_array(res->res, res->num + 1, 4258 sizeof(struct wpa_scan_res *)); 4259 if (tmp == NULL) { 4260 os_free(r); 4261 return NL_SKIP; 4262 } 4263 tmp[res->num++] = r; 4264 res->res = tmp; 4265 4266 return NL_SKIP; 4267} 4268 4269 4270static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 4271 const u8 *addr) 4272{ 4273 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4274 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4275 "mismatch (" MACSTR ")", MAC2STR(addr)); 4276 wpa_driver_nl80211_mlme(drv, addr, 4277 NL80211_CMD_DEAUTHENTICATE, 4278 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4279 } 4280} 4281 4282 4283static void wpa_driver_nl80211_check_bss_status( 4284 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4285{ 4286 size_t i; 4287 4288 for (i = 0; i < res->num; i++) { 4289 struct wpa_scan_res *r = res->res[i]; 4290 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4291 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4292 "indicates BSS status with " MACSTR 4293 " as authenticated", 4294 MAC2STR(r->bssid)); 4295 if (is_sta_interface(drv->nlmode) && 4296 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4297 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4298 0) { 4299 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4300 " in local state (auth=" MACSTR 4301 " assoc=" MACSTR ")", 4302 MAC2STR(drv->auth_bssid), 4303 MAC2STR(drv->bssid)); 4304 clear_state_mismatch(drv, r->bssid); 4305 } 4306 } 4307 4308 if (r->flags & WPA_SCAN_ASSOCIATED) { 4309 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4310 "indicate BSS status with " MACSTR 4311 " as associated", 4312 MAC2STR(r->bssid)); 4313 if (is_sta_interface(drv->nlmode) && 4314 !drv->associated) { 4315 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4316 "(not associated) does not match " 4317 "with BSS state"); 4318 clear_state_mismatch(drv, r->bssid); 4319 } else if (is_sta_interface(drv->nlmode) && 4320 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4321 0) { 4322 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4323 "(associated with " MACSTR ") does " 4324 "not match with BSS state", 4325 MAC2STR(drv->bssid)); 4326 clear_state_mismatch(drv, r->bssid); 4327 clear_state_mismatch(drv, drv->bssid); 4328 } 4329 } 4330 } 4331} 4332 4333 4334static struct wpa_scan_results * 4335nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4336{ 4337 struct nl_msg *msg; 4338 struct wpa_scan_results *res; 4339 int ret; 4340 struct nl80211_bss_info_arg arg; 4341 4342 res = os_zalloc(sizeof(*res)); 4343 if (res == NULL) 4344 return NULL; 4345 msg = nlmsg_alloc(); 4346 if (!msg) 4347 goto nla_put_failure; 4348 4349 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 4350 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4351 4352 arg.drv = drv; 4353 arg.res = res; 4354 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 4355 msg = NULL; 4356 if (ret == 0) { 4357 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4358 "BSSes)", (unsigned long) res->num); 4359 nl80211_get_noise_for_scan_results(drv, res); 4360 return res; 4361 } 4362 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4363 "(%s)", ret, strerror(-ret)); 4364nla_put_failure: 4365 nlmsg_free(msg); 4366 wpa_scan_results_free(res); 4367 return NULL; 4368} 4369 4370 4371/** 4372 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4373 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4374 * Returns: Scan results on success, -1 on failure 4375 */ 4376static struct wpa_scan_results * 4377wpa_driver_nl80211_get_scan_results(void *priv) 4378{ 4379 struct i802_bss *bss = priv; 4380 struct wpa_driver_nl80211_data *drv = bss->drv; 4381 struct wpa_scan_results *res; 4382 4383 res = nl80211_get_scan_results(drv); 4384 if (res) 4385 wpa_driver_nl80211_check_bss_status(drv, res); 4386 return res; 4387} 4388 4389 4390static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4391{ 4392 struct wpa_scan_results *res; 4393 size_t i; 4394 4395 res = nl80211_get_scan_results(drv); 4396 if (res == NULL) { 4397 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4398 return; 4399 } 4400 4401 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4402 for (i = 0; i < res->num; i++) { 4403 struct wpa_scan_res *r = res->res[i]; 4404 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4405 (int) i, (int) res->num, MAC2STR(r->bssid), 4406 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4407 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4408 } 4409 4410 wpa_scan_results_free(res); 4411} 4412 4413 4414static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss, 4415 enum wpa_alg alg, const u8 *addr, 4416 int key_idx, int set_tx, 4417 const u8 *seq, size_t seq_len, 4418 const u8 *key, size_t key_len) 4419{ 4420 struct wpa_driver_nl80211_data *drv = bss->drv; 4421 int ifindex = if_nametoindex(ifname); 4422 struct nl_msg *msg; 4423 int ret; 4424 4425 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4426 "set_tx=%d seq_len=%lu key_len=%lu", 4427 __func__, ifindex, alg, addr, key_idx, set_tx, 4428 (unsigned long) seq_len, (unsigned long) key_len); 4429#ifdef CONFIG_TDLS 4430 if (key_idx == -1) 4431 key_idx = 0; 4432#endif /* CONFIG_TDLS */ 4433 4434 msg = nlmsg_alloc(); 4435 if (!msg) 4436 return -ENOMEM; 4437 4438 if (alg == WPA_ALG_NONE) { 4439 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4440 } else { 4441 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4442 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4443 switch (alg) { 4444 case WPA_ALG_WEP: 4445 if (key_len == 5) 4446 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4447 WLAN_CIPHER_SUITE_WEP40); 4448 else 4449 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4450 WLAN_CIPHER_SUITE_WEP104); 4451 break; 4452 case WPA_ALG_TKIP: 4453 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4454 WLAN_CIPHER_SUITE_TKIP); 4455 break; 4456 case WPA_ALG_CCMP: 4457 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4458 WLAN_CIPHER_SUITE_CCMP); 4459 break; 4460 case WPA_ALG_GCMP: 4461 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4462 WLAN_CIPHER_SUITE_GCMP); 4463 break; 4464 case WPA_ALG_IGTK: 4465 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4466 WLAN_CIPHER_SUITE_AES_CMAC); 4467 break; 4468 case WPA_ALG_SMS4: 4469 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4470 WLAN_CIPHER_SUITE_SMS4); 4471 break; 4472 case WPA_ALG_KRK: 4473 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4474 WLAN_CIPHER_SUITE_KRK); 4475 break; 4476 default: 4477 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4478 "algorithm %d", __func__, alg); 4479 nlmsg_free(msg); 4480 return -1; 4481 } 4482 } 4483 4484 if (seq && seq_len) 4485 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4486 4487 if (addr && !is_broadcast_ether_addr(addr)) { 4488 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4489 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4490 4491 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4492 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4493 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4494 NL80211_KEYTYPE_GROUP); 4495 } 4496 } else if (addr && is_broadcast_ether_addr(addr)) { 4497 struct nl_msg *types; 4498 int err; 4499 wpa_printf(MSG_DEBUG, " broadcast key"); 4500 types = nlmsg_alloc(); 4501 if (!types) 4502 goto nla_put_failure; 4503 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4504 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4505 types); 4506 nlmsg_free(types); 4507 if (err) 4508 goto nla_put_failure; 4509 } 4510 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4511 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4512 4513 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4514 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4515 ret = 0; 4516 if (ret) 4517 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4518 ret, strerror(-ret)); 4519 4520 /* 4521 * If we failed or don't need to set the default TX key (below), 4522 * we're done here. 4523 */ 4524 if (ret || !set_tx || alg == WPA_ALG_NONE) 4525 return ret; 4526 if (is_ap_interface(drv->nlmode) && addr && 4527 !is_broadcast_ether_addr(addr)) 4528 return ret; 4529 4530 msg = nlmsg_alloc(); 4531 if (!msg) 4532 return -ENOMEM; 4533 4534 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4535 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4536 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4537 if (alg == WPA_ALG_IGTK) 4538 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4539 else 4540 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4541 if (addr && is_broadcast_ether_addr(addr)) { 4542 struct nl_msg *types; 4543 int err; 4544 types = nlmsg_alloc(); 4545 if (!types) 4546 goto nla_put_failure; 4547 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4548 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4549 types); 4550 nlmsg_free(types); 4551 if (err) 4552 goto nla_put_failure; 4553 } else if (addr) { 4554 struct nl_msg *types; 4555 int err; 4556 types = nlmsg_alloc(); 4557 if (!types) 4558 goto nla_put_failure; 4559 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4560 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4561 types); 4562 nlmsg_free(types); 4563 if (err) 4564 goto nla_put_failure; 4565 } 4566 4567 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4568 if (ret == -ENOENT) 4569 ret = 0; 4570 if (ret) 4571 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4572 "err=%d %s)", ret, strerror(-ret)); 4573 return ret; 4574 4575nla_put_failure: 4576 nlmsg_free(msg); 4577 return -ENOBUFS; 4578} 4579 4580 4581static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4582 int key_idx, int defkey, 4583 const u8 *seq, size_t seq_len, 4584 const u8 *key, size_t key_len) 4585{ 4586 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4587 if (!key_attr) 4588 return -1; 4589 4590 if (defkey && alg == WPA_ALG_IGTK) 4591 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4592 else if (defkey) 4593 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4594 4595 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4596 4597 switch (alg) { 4598 case WPA_ALG_WEP: 4599 if (key_len == 5) 4600 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4601 WLAN_CIPHER_SUITE_WEP40); 4602 else 4603 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4604 WLAN_CIPHER_SUITE_WEP104); 4605 break; 4606 case WPA_ALG_TKIP: 4607 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4608 break; 4609 case WPA_ALG_CCMP: 4610 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4611 break; 4612 case WPA_ALG_GCMP: 4613 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); 4614 break; 4615 case WPA_ALG_IGTK: 4616 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4617 WLAN_CIPHER_SUITE_AES_CMAC); 4618 break; 4619 default: 4620 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4621 "algorithm %d", __func__, alg); 4622 return -1; 4623 } 4624 4625 if (seq && seq_len) 4626 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4627 4628 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4629 4630 nla_nest_end(msg, key_attr); 4631 4632 return 0; 4633 nla_put_failure: 4634 return -1; 4635} 4636 4637 4638static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4639 struct nl_msg *msg) 4640{ 4641 int i, privacy = 0; 4642 struct nlattr *nl_keys, *nl_key; 4643 4644 for (i = 0; i < 4; i++) { 4645 if (!params->wep_key[i]) 4646 continue; 4647 privacy = 1; 4648 break; 4649 } 4650 if (params->wps == WPS_MODE_PRIVACY) 4651 privacy = 1; 4652 if (params->pairwise_suite && 4653 params->pairwise_suite != WPA_CIPHER_NONE) 4654 privacy = 1; 4655 4656 if (!privacy) 4657 return 0; 4658 4659 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4660 4661 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4662 if (!nl_keys) 4663 goto nla_put_failure; 4664 4665 for (i = 0; i < 4; i++) { 4666 if (!params->wep_key[i]) 4667 continue; 4668 4669 nl_key = nla_nest_start(msg, i); 4670 if (!nl_key) 4671 goto nla_put_failure; 4672 4673 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4674 params->wep_key[i]); 4675 if (params->wep_key_len[i] == 5) 4676 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4677 WLAN_CIPHER_SUITE_WEP40); 4678 else 4679 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4680 WLAN_CIPHER_SUITE_WEP104); 4681 4682 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4683 4684 if (i == params->wep_tx_keyidx) 4685 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4686 4687 nla_nest_end(msg, nl_key); 4688 } 4689 nla_nest_end(msg, nl_keys); 4690 4691 return 0; 4692 4693nla_put_failure: 4694 return -ENOBUFS; 4695} 4696 4697 4698static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4699 const u8 *addr, int cmd, u16 reason_code, 4700 int local_state_change) 4701{ 4702 int ret = -1; 4703 struct nl_msg *msg; 4704 4705 msg = nlmsg_alloc(); 4706 if (!msg) 4707 return -1; 4708 4709 nl80211_cmd(drv, msg, 0, cmd); 4710 4711 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4712 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4713 if (addr) 4714 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4715 if (local_state_change) 4716 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4717 4718 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4719 msg = NULL; 4720 if (ret) { 4721 wpa_dbg(drv->ctx, MSG_DEBUG, 4722 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4723 reason_code, ret, strerror(-ret)); 4724 goto nla_put_failure; 4725 } 4726 ret = 0; 4727 4728nla_put_failure: 4729 nlmsg_free(msg); 4730 return ret; 4731} 4732 4733 4734static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4735 int reason_code) 4736{ 4737 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code); 4738 drv->associated = 0; 4739 drv->ignore_next_local_disconnect = 0; 4740 /* Disconnect command doesn't need BSSID - it uses cached value */ 4741 return wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT, 4742 reason_code, 0); 4743} 4744 4745 4746static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss, 4747 const u8 *addr, int reason_code) 4748{ 4749 struct wpa_driver_nl80211_data *drv = bss->drv; 4750 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4751 return wpa_driver_nl80211_disconnect(drv, reason_code); 4752 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4753 __func__, MAC2STR(addr), reason_code); 4754 drv->associated = 0; 4755 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4756 return nl80211_leave_ibss(drv); 4757 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4758 reason_code, 0); 4759} 4760 4761 4762static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4763 struct wpa_driver_auth_params *params) 4764{ 4765 int i; 4766 4767 drv->auth_freq = params->freq; 4768 drv->auth_alg = params->auth_alg; 4769 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4770 drv->auth_local_state_change = params->local_state_change; 4771 drv->auth_p2p = params->p2p; 4772 4773 if (params->bssid) 4774 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4775 else 4776 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4777 4778 if (params->ssid) { 4779 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4780 drv->auth_ssid_len = params->ssid_len; 4781 } else 4782 drv->auth_ssid_len = 0; 4783 4784 4785 os_free(drv->auth_ie); 4786 drv->auth_ie = NULL; 4787 drv->auth_ie_len = 0; 4788 if (params->ie) { 4789 drv->auth_ie = os_malloc(params->ie_len); 4790 if (drv->auth_ie) { 4791 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4792 drv->auth_ie_len = params->ie_len; 4793 } 4794 } 4795 4796 for (i = 0; i < 4; i++) { 4797 if (params->wep_key[i] && params->wep_key_len[i] && 4798 params->wep_key_len[i] <= 16) { 4799 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4800 params->wep_key_len[i]); 4801 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4802 } else 4803 drv->auth_wep_key_len[i] = 0; 4804 } 4805} 4806 4807 4808static int wpa_driver_nl80211_authenticate( 4809 struct i802_bss *bss, struct wpa_driver_auth_params *params) 4810{ 4811 struct wpa_driver_nl80211_data *drv = bss->drv; 4812 int ret = -1, i; 4813 struct nl_msg *msg; 4814 enum nl80211_auth_type type; 4815 enum nl80211_iftype nlmode; 4816 int count = 0; 4817 int is_retry; 4818 4819 is_retry = drv->retry_auth; 4820 drv->retry_auth = 0; 4821 4822 drv->associated = 0; 4823 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4824 /* FIX: IBSS mode */ 4825 nlmode = params->p2p ? 4826 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4827 if (drv->nlmode != nlmode && 4828 wpa_driver_nl80211_set_mode(bss, nlmode) < 0) 4829 return -1; 4830 4831retry: 4832 msg = nlmsg_alloc(); 4833 if (!msg) 4834 return -1; 4835 4836 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4837 drv->ifindex); 4838 4839 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4840 4841 for (i = 0; i < 4; i++) { 4842 if (!params->wep_key[i]) 4843 continue; 4844 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP, 4845 NULL, i, 4846 i == params->wep_tx_keyidx, NULL, 0, 4847 params->wep_key[i], 4848 params->wep_key_len[i]); 4849 if (params->wep_tx_keyidx != i) 4850 continue; 4851 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4852 params->wep_key[i], params->wep_key_len[i])) { 4853 nlmsg_free(msg); 4854 return -1; 4855 } 4856 } 4857 4858 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4859 if (params->bssid) { 4860 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4861 MAC2STR(params->bssid)); 4862 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4863 } 4864 if (params->freq) { 4865 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4866 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4867 } 4868 if (params->ssid) { 4869 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4870 params->ssid, params->ssid_len); 4871 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4872 params->ssid); 4873 } 4874 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4875 if (params->ie) 4876 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4877 if (params->sae_data) { 4878 wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data, 4879 params->sae_data_len); 4880 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len, 4881 params->sae_data); 4882 } 4883 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4884 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4885 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4886 type = NL80211_AUTHTYPE_SHARED_KEY; 4887 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4888 type = NL80211_AUTHTYPE_NETWORK_EAP; 4889 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4890 type = NL80211_AUTHTYPE_FT; 4891 else if (params->auth_alg & WPA_AUTH_ALG_SAE) 4892 type = NL80211_AUTHTYPE_SAE; 4893 else 4894 goto nla_put_failure; 4895 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4896 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4897 if (params->local_state_change) { 4898 wpa_printf(MSG_DEBUG, " * Local state change only"); 4899 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4900 } 4901 4902 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4903 msg = NULL; 4904 if (ret) { 4905 wpa_dbg(drv->ctx, MSG_DEBUG, 4906 "nl80211: MLME command failed (auth): ret=%d (%s)", 4907 ret, strerror(-ret)); 4908 count++; 4909 if (ret == -EALREADY && count == 1 && params->bssid && 4910 !params->local_state_change) { 4911 /* 4912 * mac80211 does not currently accept new 4913 * authentication if we are already authenticated. As a 4914 * workaround, force deauthentication and try again. 4915 */ 4916 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4917 "after forced deauthentication"); 4918 wpa_driver_nl80211_deauthenticate( 4919 bss, params->bssid, 4920 WLAN_REASON_PREV_AUTH_NOT_VALID); 4921 nlmsg_free(msg); 4922 goto retry; 4923 } 4924 4925 if (ret == -ENOENT && params->freq && !is_retry) { 4926 /* 4927 * cfg80211 has likely expired the BSS entry even 4928 * though it was previously available in our internal 4929 * BSS table. To recover quickly, start a single 4930 * channel scan on the specified channel. 4931 */ 4932 struct wpa_driver_scan_params scan; 4933 int freqs[2]; 4934 4935 os_memset(&scan, 0, sizeof(scan)); 4936 scan.num_ssids = 1; 4937 if (params->ssid) { 4938 scan.ssids[0].ssid = params->ssid; 4939 scan.ssids[0].ssid_len = params->ssid_len; 4940 } 4941 freqs[0] = params->freq; 4942 freqs[1] = 0; 4943 scan.freqs = freqs; 4944 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 4945 "channel scan to refresh cfg80211 BSS " 4946 "entry"); 4947 ret = wpa_driver_nl80211_scan(bss, &scan); 4948 if (ret == 0) { 4949 nl80211_copy_auth_params(drv, params); 4950 drv->scan_for_auth = 1; 4951 } 4952 } else if (is_retry) { 4953 /* 4954 * Need to indicate this with an event since the return 4955 * value from the retry is not delivered to core code. 4956 */ 4957 union wpa_event_data event; 4958 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 4959 "failed"); 4960 os_memset(&event, 0, sizeof(event)); 4961 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 4962 ETH_ALEN); 4963 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 4964 &event); 4965 } 4966 4967 goto nla_put_failure; 4968 } 4969 ret = 0; 4970 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 4971 "successfully"); 4972 4973nla_put_failure: 4974 nlmsg_free(msg); 4975 return ret; 4976} 4977 4978 4979static int wpa_driver_nl80211_authenticate_retry( 4980 struct wpa_driver_nl80211_data *drv) 4981{ 4982 struct wpa_driver_auth_params params; 4983 struct i802_bss *bss = &drv->first_bss; 4984 int i; 4985 4986 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 4987 4988 os_memset(¶ms, 0, sizeof(params)); 4989 params.freq = drv->auth_freq; 4990 params.auth_alg = drv->auth_alg; 4991 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 4992 params.local_state_change = drv->auth_local_state_change; 4993 params.p2p = drv->auth_p2p; 4994 4995 if (!is_zero_ether_addr(drv->auth_bssid_)) 4996 params.bssid = drv->auth_bssid_; 4997 4998 if (drv->auth_ssid_len) { 4999 params.ssid = drv->auth_ssid; 5000 params.ssid_len = drv->auth_ssid_len; 5001 } 5002 5003 params.ie = drv->auth_ie; 5004 params.ie_len = drv->auth_ie_len; 5005 5006 for (i = 0; i < 4; i++) { 5007 if (drv->auth_wep_key_len[i]) { 5008 params.wep_key[i] = drv->auth_wep_key[i]; 5009 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 5010 } 5011 } 5012 5013 drv->retry_auth = 1; 5014 return wpa_driver_nl80211_authenticate(bss, ¶ms); 5015} 5016 5017 5018struct phy_info_arg { 5019 u16 *num_modes; 5020 struct hostapd_hw_modes *modes; 5021 int last_mode, last_chan_idx; 5022}; 5023 5024static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, 5025 struct nlattr *ampdu_factor, 5026 struct nlattr *ampdu_density, 5027 struct nlattr *mcs_set) 5028{ 5029 if (capa) 5030 mode->ht_capab = nla_get_u16(capa); 5031 5032 if (ampdu_factor) 5033 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; 5034 5035 if (ampdu_density) 5036 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; 5037 5038 if (mcs_set && nla_len(mcs_set) >= 16) { 5039 u8 *mcs; 5040 mcs = nla_data(mcs_set); 5041 os_memcpy(mode->mcs_set, mcs, 16); 5042 } 5043} 5044 5045 5046static void phy_info_vht_capa(struct hostapd_hw_modes *mode, 5047 struct nlattr *capa, 5048 struct nlattr *mcs_set) 5049{ 5050 if (capa) 5051 mode->vht_capab = nla_get_u32(capa); 5052 5053 if (mcs_set && nla_len(mcs_set) >= 8) { 5054 u8 *mcs; 5055 mcs = nla_data(mcs_set); 5056 os_memcpy(mode->vht_mcs_set, mcs, 8); 5057 } 5058} 5059 5060 5061static void phy_info_freq(struct hostapd_hw_modes *mode, 5062 struct hostapd_channel_data *chan, 5063 struct nlattr *tb_freq[]) 5064{ 5065 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 5066 chan->flag = 0; 5067 5068 /* mode is not set */ 5069 if (mode->mode >= NUM_HOSTAPD_MODES) { 5070 /* crude heuristic */ 5071 if (chan->freq < 4000) 5072 mode->mode = HOSTAPD_MODE_IEEE80211B; 5073 else if (chan->freq > 50000) 5074 mode->mode = HOSTAPD_MODE_IEEE80211AD; 5075 else 5076 mode->mode = HOSTAPD_MODE_IEEE80211A; 5077 } 5078 5079 switch (mode->mode) { 5080 case HOSTAPD_MODE_IEEE80211AD: 5081 chan->chan = (chan->freq - 56160) / 2160; 5082 break; 5083 case HOSTAPD_MODE_IEEE80211A: 5084 chan->chan = chan->freq / 5 - 1000; 5085 break; 5086 case HOSTAPD_MODE_IEEE80211B: 5087 case HOSTAPD_MODE_IEEE80211G: 5088 if (chan->freq == 2484) 5089 chan->chan = 14; 5090 else 5091 chan->chan = (chan->freq - 2407) / 5; 5092 break; 5093 default: 5094 break; 5095 } 5096 5097 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5098 chan->flag |= HOSTAPD_CHAN_DISABLED; 5099 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 5100 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN; 5101 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 5102 chan->flag |= HOSTAPD_CHAN_NO_IBSS; 5103 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 5104 chan->flag |= HOSTAPD_CHAN_RADAR; 5105 5106 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 5107 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5108 chan->max_tx_power = nla_get_u32( 5109 tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 5110} 5111 5112 5113static int phy_info_freqs(struct phy_info_arg *phy_info, 5114 struct hostapd_hw_modes *mode, struct nlattr *tb) 5115{ 5116 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5117 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 5118 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 5119 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 5120 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 5121 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 5122 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 5123 }; 5124 int new_channels = 0; 5125 struct hostapd_channel_data *channel; 5126 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 5127 struct nlattr *nl_freq; 5128 int rem_freq, idx; 5129 5130 if (tb == NULL) 5131 return NL_OK; 5132 5133 nla_for_each_nested(nl_freq, tb, rem_freq) { 5134 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5135 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5136 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5137 continue; 5138 new_channels++; 5139 } 5140 5141 channel = os_realloc_array(mode->channels, 5142 mode->num_channels + new_channels, 5143 sizeof(struct hostapd_channel_data)); 5144 if (!channel) 5145 return NL_SKIP; 5146 5147 mode->channels = channel; 5148 mode->num_channels += new_channels; 5149 5150 idx = phy_info->last_chan_idx; 5151 5152 nla_for_each_nested(nl_freq, tb, rem_freq) { 5153 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5154 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5155 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5156 continue; 5157 phy_info_freq(mode, &mode->channels[idx], tb_freq); 5158 idx++; 5159 } 5160 phy_info->last_chan_idx = idx; 5161 5162 return NL_OK; 5163} 5164 5165 5166static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 5167{ 5168 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 5169 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 5170 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 5171 { .type = NLA_FLAG }, 5172 }; 5173 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 5174 struct nlattr *nl_rate; 5175 int rem_rate, idx; 5176 5177 if (tb == NULL) 5178 return NL_OK; 5179 5180 nla_for_each_nested(nl_rate, tb, rem_rate) { 5181 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5182 nla_data(nl_rate), nla_len(nl_rate), 5183 rate_policy); 5184 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5185 continue; 5186 mode->num_rates++; 5187 } 5188 5189 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 5190 if (!mode->rates) 5191 return NL_SKIP; 5192 5193 idx = 0; 5194 5195 nla_for_each_nested(nl_rate, tb, rem_rate) { 5196 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5197 nla_data(nl_rate), nla_len(nl_rate), 5198 rate_policy); 5199 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5200 continue; 5201 mode->rates[idx] = nla_get_u32( 5202 tb_rate[NL80211_BITRATE_ATTR_RATE]); 5203 5204 /* crude heuristic */ 5205 if (mode->mode == HOSTAPD_MODE_IEEE80211B && 5206 mode->rates[idx] > 200) 5207 mode->mode = HOSTAPD_MODE_IEEE80211G; 5208 5209 idx++; 5210 } 5211 5212 return NL_OK; 5213} 5214 5215 5216static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 5217{ 5218 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 5219 struct hostapd_hw_modes *mode; 5220 int ret; 5221 5222 if (phy_info->last_mode != nl_band->nla_type) { 5223 mode = os_realloc_array(phy_info->modes, 5224 *phy_info->num_modes + 1, 5225 sizeof(*mode)); 5226 if (!mode) 5227 return NL_SKIP; 5228 phy_info->modes = mode; 5229 5230 mode = &phy_info->modes[*(phy_info->num_modes)]; 5231 os_memset(mode, 0, sizeof(*mode)); 5232 mode->mode = NUM_HOSTAPD_MODES; 5233 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 5234 *(phy_info->num_modes) += 1; 5235 phy_info->last_mode = nl_band->nla_type; 5236 phy_info->last_chan_idx = 0; 5237 } else 5238 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 5239 5240 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 5241 nla_len(nl_band), NULL); 5242 5243 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 5244 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 5245 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 5246 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 5247 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 5248 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 5249 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 5250 if (ret != NL_OK) 5251 return ret; 5252 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 5253 if (ret != NL_OK) 5254 return ret; 5255 5256 return NL_OK; 5257} 5258 5259 5260static int phy_info_handler(struct nl_msg *msg, void *arg) 5261{ 5262 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5263 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5264 struct phy_info_arg *phy_info = arg; 5265 struct nlattr *nl_band; 5266 int rem_band; 5267 5268 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5269 genlmsg_attrlen(gnlh, 0), NULL); 5270 5271 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 5272 return NL_SKIP; 5273 5274 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 5275 { 5276 int res = phy_info_band(phy_info, nl_band); 5277 if (res != NL_OK) 5278 return res; 5279 } 5280 5281 return NL_SKIP; 5282} 5283 5284 5285static struct hostapd_hw_modes * 5286wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes) 5287{ 5288 u16 m; 5289 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 5290 int i, mode11g_idx = -1; 5291 5292 /* If only 802.11g mode is included, use it to construct matching 5293 * 802.11b mode data. */ 5294 5295 for (m = 0; m < *num_modes; m++) { 5296 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 5297 return modes; /* 802.11b already included */ 5298 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 5299 mode11g_idx = m; 5300 } 5301 5302 if (mode11g_idx < 0) 5303 return modes; /* 2.4 GHz band not supported at all */ 5304 5305 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 5306 if (nmodes == NULL) 5307 return modes; /* Could not add 802.11b mode */ 5308 5309 mode = &nmodes[*num_modes]; 5310 os_memset(mode, 0, sizeof(*mode)); 5311 (*num_modes)++; 5312 modes = nmodes; 5313 5314 mode->mode = HOSTAPD_MODE_IEEE80211B; 5315 5316 mode11g = &modes[mode11g_idx]; 5317 mode->num_channels = mode11g->num_channels; 5318 mode->channels = os_malloc(mode11g->num_channels * 5319 sizeof(struct hostapd_channel_data)); 5320 if (mode->channels == NULL) { 5321 (*num_modes)--; 5322 return modes; /* Could not add 802.11b mode */ 5323 } 5324 os_memcpy(mode->channels, mode11g->channels, 5325 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 5326 5327 mode->num_rates = 0; 5328 mode->rates = os_malloc(4 * sizeof(int)); 5329 if (mode->rates == NULL) { 5330 os_free(mode->channels); 5331 (*num_modes)--; 5332 return modes; /* Could not add 802.11b mode */ 5333 } 5334 5335 for (i = 0; i < mode11g->num_rates; i++) { 5336 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 5337 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 5338 continue; 5339 mode->rates[mode->num_rates] = mode11g->rates[i]; 5340 mode->num_rates++; 5341 if (mode->num_rates == 4) 5342 break; 5343 } 5344 5345 if (mode->num_rates == 0) { 5346 os_free(mode->channels); 5347 os_free(mode->rates); 5348 (*num_modes)--; 5349 return modes; /* No 802.11b rates */ 5350 } 5351 5352 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 5353 "information"); 5354 5355 return modes; 5356} 5357 5358 5359static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 5360 int end) 5361{ 5362 int c; 5363 5364 for (c = 0; c < mode->num_channels; c++) { 5365 struct hostapd_channel_data *chan = &mode->channels[c]; 5366 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 5367 chan->flag |= HOSTAPD_CHAN_HT40; 5368 } 5369} 5370 5371 5372static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 5373 int end) 5374{ 5375 int c; 5376 5377 for (c = 0; c < mode->num_channels; c++) { 5378 struct hostapd_channel_data *chan = &mode->channels[c]; 5379 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 5380 continue; 5381 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 5382 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 5383 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 5384 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 5385 } 5386} 5387 5388 5389static void nl80211_reg_rule_ht40(struct nlattr *tb[], 5390 struct phy_info_arg *results) 5391{ 5392 u32 start, end, max_bw; 5393 u16 m; 5394 5395 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5396 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5397 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5398 return; 5399 5400 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5401 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5402 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5403 5404 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 5405 start, end, max_bw); 5406 if (max_bw < 40) 5407 return; 5408 5409 for (m = 0; m < *results->num_modes; m++) { 5410 if (!(results->modes[m].ht_capab & 5411 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5412 continue; 5413 nl80211_set_ht40_mode(&results->modes[m], start, end); 5414 } 5415} 5416 5417 5418static void nl80211_reg_rule_sec(struct nlattr *tb[], 5419 struct phy_info_arg *results) 5420{ 5421 u32 start, end, max_bw; 5422 u16 m; 5423 5424 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 5425 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 5426 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 5427 return; 5428 5429 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 5430 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 5431 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 5432 5433 if (max_bw < 20) 5434 return; 5435 5436 for (m = 0; m < *results->num_modes; m++) { 5437 if (!(results->modes[m].ht_capab & 5438 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 5439 continue; 5440 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 5441 } 5442} 5443 5444 5445static int nl80211_get_reg(struct nl_msg *msg, void *arg) 5446{ 5447 struct phy_info_arg *results = arg; 5448 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5449 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5450 struct nlattr *nl_rule; 5451 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 5452 int rem_rule; 5453 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5454 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5455 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5456 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5457 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5458 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5459 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5460 }; 5461 5462 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5463 genlmsg_attrlen(gnlh, 0), NULL); 5464 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5465 !tb_msg[NL80211_ATTR_REG_RULES]) { 5466 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5467 "available"); 5468 return NL_SKIP; 5469 } 5470 5471 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5472 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5473 5474 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5475 { 5476 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5477 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5478 nl80211_reg_rule_ht40(tb_rule, results); 5479 } 5480 5481 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5482 { 5483 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5484 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5485 nl80211_reg_rule_sec(tb_rule, results); 5486 } 5487 5488 return NL_SKIP; 5489} 5490 5491 5492static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5493 struct phy_info_arg *results) 5494{ 5495 struct nl_msg *msg; 5496 5497 msg = nlmsg_alloc(); 5498 if (!msg) 5499 return -ENOMEM; 5500 5501 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5502 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5503} 5504 5505 5506static struct hostapd_hw_modes * 5507wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5508{ 5509 u32 feat; 5510 struct i802_bss *bss = priv; 5511 struct wpa_driver_nl80211_data *drv = bss->drv; 5512 struct nl_msg *msg; 5513 struct phy_info_arg result = { 5514 .num_modes = num_modes, 5515 .modes = NULL, 5516 .last_mode = -1, 5517 }; 5518 5519 *num_modes = 0; 5520 *flags = 0; 5521 5522 msg = nlmsg_alloc(); 5523 if (!msg) 5524 return NULL; 5525 5526 feat = get_nl80211_protocol_features(drv); 5527 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 5528 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 5529 else 5530 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5531 5532 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 5533 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5534 5535 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5536 nl80211_set_ht40_flags(drv, &result); 5537 return wpa_driver_nl80211_add_11b(result.modes, num_modes); 5538 } 5539 msg = NULL; 5540 nla_put_failure: 5541 nlmsg_free(msg); 5542 return NULL; 5543} 5544 5545 5546static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5547 const void *data, size_t len, 5548 int encrypt, int noack) 5549{ 5550 __u8 rtap_hdr[] = { 5551 0x00, 0x00, /* radiotap version */ 5552 0x0e, 0x00, /* radiotap length */ 5553 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5554 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5555 0x00, /* padding */ 5556 0x00, 0x00, /* RX and TX flags to indicate that */ 5557 0x00, 0x00, /* this is the injected frame directly */ 5558 }; 5559 struct iovec iov[2] = { 5560 { 5561 .iov_base = &rtap_hdr, 5562 .iov_len = sizeof(rtap_hdr), 5563 }, 5564 { 5565 .iov_base = (void *) data, 5566 .iov_len = len, 5567 } 5568 }; 5569 struct msghdr msg = { 5570 .msg_name = NULL, 5571 .msg_namelen = 0, 5572 .msg_iov = iov, 5573 .msg_iovlen = 2, 5574 .msg_control = NULL, 5575 .msg_controllen = 0, 5576 .msg_flags = 0, 5577 }; 5578 int res; 5579 u16 txflags = 0; 5580 5581 if (encrypt) 5582 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5583 5584 if (drv->monitor_sock < 0) { 5585 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5586 "for %s", __func__); 5587 return -1; 5588 } 5589 5590 if (noack) 5591 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5592 WPA_PUT_LE16(&rtap_hdr[12], txflags); 5593 5594 res = sendmsg(drv->monitor_sock, &msg, 0); 5595 if (res < 0) { 5596 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5597 return -1; 5598 } 5599 return 0; 5600} 5601 5602 5603static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5604 const void *data, size_t len, 5605 int encrypt, int noack, 5606 unsigned int freq, int no_cck, 5607 int offchanok, unsigned int wait_time) 5608{ 5609 struct wpa_driver_nl80211_data *drv = bss->drv; 5610 u64 cookie; 5611 5612 if (freq == 0) 5613 freq = bss->freq; 5614 5615 if (drv->use_monitor) 5616 return wpa_driver_nl80211_send_mntr(drv, data, len, 5617 encrypt, noack); 5618 5619 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5620 &cookie, no_cck, noack, offchanok); 5621} 5622 5623 5624static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data, 5625 size_t data_len, int noack, 5626 unsigned int freq, int no_cck, 5627 int offchanok, 5628 unsigned int wait_time) 5629{ 5630 struct wpa_driver_nl80211_data *drv = bss->drv; 5631 struct ieee80211_mgmt *mgmt; 5632 int encrypt = 1; 5633 u16 fc; 5634 5635 mgmt = (struct ieee80211_mgmt *) data; 5636 fc = le_to_host16(mgmt->frame_control); 5637 5638 if (is_sta_interface(drv->nlmode) && 5639 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5640 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5641 /* 5642 * The use of last_mgmt_freq is a bit of a hack, 5643 * but it works due to the single-threaded nature 5644 * of wpa_supplicant. 5645 */ 5646 if (freq == 0) 5647 freq = drv->last_mgmt_freq; 5648 return nl80211_send_frame_cmd(bss, freq, 0, 5649 data, data_len, NULL, 1, noack, 5650 1); 5651 } 5652 5653 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5654 if (freq == 0) 5655 freq = bss->freq; 5656 return nl80211_send_frame_cmd(bss, freq, 5657 (int) freq == bss->freq ? 0 : 5658 wait_time, 5659 data, data_len, 5660 &drv->send_action_cookie, 5661 no_cck, noack, offchanok); 5662 } 5663 5664 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5665 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5666 /* 5667 * Only one of the authentication frame types is encrypted. 5668 * In order for static WEP encryption to work properly (i.e., 5669 * to not encrypt the frame), we need to tell mac80211 about 5670 * the frames that must not be encrypted. 5671 */ 5672 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5673 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5674 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5675 encrypt = 0; 5676 } 5677 5678 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5679 noack, freq, no_cck, offchanok, 5680 wait_time); 5681} 5682 5683 5684static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5685 int slot, int ht_opmode, int ap_isolate, 5686 int *basic_rates) 5687{ 5688 struct wpa_driver_nl80211_data *drv = bss->drv; 5689 struct nl_msg *msg; 5690 5691 msg = nlmsg_alloc(); 5692 if (!msg) 5693 return -ENOMEM; 5694 5695 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5696 5697 if (cts >= 0) 5698 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5699 if (preamble >= 0) 5700 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5701 if (slot >= 0) 5702 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5703 if (ht_opmode >= 0) 5704 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5705 if (ap_isolate >= 0) 5706 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5707 5708 if (basic_rates) { 5709 u8 rates[NL80211_MAX_SUPP_RATES]; 5710 u8 rates_len = 0; 5711 int i; 5712 5713 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5714 i++) 5715 rates[rates_len++] = basic_rates[i] / 5; 5716 5717 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5718 } 5719 5720 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5721 5722 return send_and_recv_msgs(drv, msg, NULL, NULL); 5723 nla_put_failure: 5724 nlmsg_free(msg); 5725 return -ENOBUFS; 5726} 5727 5728 5729static int wpa_driver_nl80211_set_ap(void *priv, 5730 struct wpa_driver_ap_params *params) 5731{ 5732 struct i802_bss *bss = priv; 5733 struct wpa_driver_nl80211_data *drv = bss->drv; 5734 struct nl_msg *msg; 5735 u8 cmd = NL80211_CMD_NEW_BEACON; 5736 int ret; 5737 int beacon_set; 5738 int ifindex = if_nametoindex(bss->ifname); 5739 int num_suites; 5740 u32 suites[10]; 5741 u32 ver; 5742 5743 beacon_set = bss->beacon_set; 5744 5745 msg = nlmsg_alloc(); 5746 if (!msg) 5747 return -ENOMEM; 5748 5749 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5750 beacon_set); 5751 if (beacon_set) 5752 cmd = NL80211_CMD_SET_BEACON; 5753 5754 nl80211_cmd(drv, msg, 0, cmd); 5755 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5756 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5757 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5758 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5759 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5760 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5761 params->ssid); 5762 if (params->proberesp && params->proberesp_len) 5763 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5764 params->proberesp); 5765 switch (params->hide_ssid) { 5766 case NO_SSID_HIDING: 5767 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5768 NL80211_HIDDEN_SSID_NOT_IN_USE); 5769 break; 5770 case HIDDEN_SSID_ZERO_LEN: 5771 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5772 NL80211_HIDDEN_SSID_ZERO_LEN); 5773 break; 5774 case HIDDEN_SSID_ZERO_CONTENTS: 5775 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5776 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5777 break; 5778 } 5779 if (params->privacy) 5780 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5781 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5782 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5783 /* Leave out the attribute */ 5784 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5785 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5786 NL80211_AUTHTYPE_SHARED_KEY); 5787 else 5788 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5789 NL80211_AUTHTYPE_OPEN_SYSTEM); 5790 5791 ver = 0; 5792 if (params->wpa_version & WPA_PROTO_WPA) 5793 ver |= NL80211_WPA_VERSION_1; 5794 if (params->wpa_version & WPA_PROTO_RSN) 5795 ver |= NL80211_WPA_VERSION_2; 5796 if (ver) 5797 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5798 5799 num_suites = 0; 5800 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5801 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5802 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5803 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5804 if (num_suites) { 5805 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5806 num_suites * sizeof(u32), suites); 5807 } 5808 5809 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5810 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5811 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5812 5813 num_suites = 0; 5814 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5815 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5816 if (params->pairwise_ciphers & WPA_CIPHER_GCMP) 5817 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; 5818 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5819 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5820 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5821 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5822 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5823 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5824 if (num_suites) { 5825 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5826 num_suites * sizeof(u32), suites); 5827 } 5828 5829 switch (params->group_cipher) { 5830 case WPA_CIPHER_CCMP: 5831 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5832 WLAN_CIPHER_SUITE_CCMP); 5833 break; 5834 case WPA_CIPHER_GCMP: 5835 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5836 WLAN_CIPHER_SUITE_GCMP); 5837 break; 5838 case WPA_CIPHER_TKIP: 5839 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5840 WLAN_CIPHER_SUITE_TKIP); 5841 break; 5842 case WPA_CIPHER_WEP104: 5843 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5844 WLAN_CIPHER_SUITE_WEP104); 5845 break; 5846 case WPA_CIPHER_WEP40: 5847 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5848 WLAN_CIPHER_SUITE_WEP40); 5849 break; 5850 } 5851 5852 if (params->beacon_ies) { 5853 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5854 wpabuf_head(params->beacon_ies)); 5855 } 5856 if (params->proberesp_ies) { 5857 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5858 wpabuf_len(params->proberesp_ies), 5859 wpabuf_head(params->proberesp_ies)); 5860 } 5861 if (params->assocresp_ies) { 5862 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5863 wpabuf_len(params->assocresp_ies), 5864 wpabuf_head(params->assocresp_ies)); 5865 } 5866 5867 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 5868 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 5869 params->ap_max_inactivity); 5870 } 5871 5872 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5873 if (ret) { 5874 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5875 ret, strerror(-ret)); 5876 } else { 5877 bss->beacon_set = 1; 5878 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5879 params->short_slot_time, params->ht_opmode, 5880 params->isolate, params->basic_rates); 5881 } 5882 return ret; 5883 nla_put_failure: 5884 nlmsg_free(msg); 5885 return -ENOBUFS; 5886} 5887 5888 5889static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5890 struct hostapd_freq_params *freq) 5891{ 5892 struct wpa_driver_nl80211_data *drv = bss->drv; 5893 struct nl_msg *msg; 5894 int ret; 5895 5896 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d," 5897 " bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 5898 freq->freq, freq->ht_enabled, freq->vht_enabled, 5899 freq->bandwidth, freq->center_freq1, freq->center_freq2); 5900 msg = nlmsg_alloc(); 5901 if (!msg) 5902 return -1; 5903 5904 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5905 5906 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5907 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq); 5908 if (freq->vht_enabled) { 5909 switch (freq->bandwidth) { 5910 case 20: 5911 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5912 NL80211_CHAN_WIDTH_20); 5913 break; 5914 case 40: 5915 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5916 NL80211_CHAN_WIDTH_40); 5917 break; 5918 case 80: 5919 if (freq->center_freq2) 5920 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5921 NL80211_CHAN_WIDTH_80P80); 5922 else 5923 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5924 NL80211_CHAN_WIDTH_80); 5925 break; 5926 case 160: 5927 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 5928 NL80211_CHAN_WIDTH_160); 5929 break; 5930 default: 5931 return -1; 5932 } 5933 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1); 5934 if (freq->center_freq2) 5935 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2, 5936 freq->center_freq2); 5937 } else if (freq->ht_enabled) { 5938 switch (freq->sec_channel_offset) { 5939 case -1: 5940 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5941 NL80211_CHAN_HT40MINUS); 5942 break; 5943 case 1: 5944 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5945 NL80211_CHAN_HT40PLUS); 5946 break; 5947 default: 5948 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5949 NL80211_CHAN_HT20); 5950 break; 5951 } 5952 } 5953 5954 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5955 msg = NULL; 5956 if (ret == 0) { 5957 bss->freq = freq->freq; 5958 return 0; 5959 } 5960 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 5961 "%d (%s)", freq->freq, ret, strerror(-ret)); 5962nla_put_failure: 5963 nlmsg_free(msg); 5964 return -1; 5965} 5966 5967 5968static u32 sta_flags_nl80211(int flags) 5969{ 5970 u32 f = 0; 5971 5972 if (flags & WPA_STA_AUTHORIZED) 5973 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 5974 if (flags & WPA_STA_WMM) 5975 f |= BIT(NL80211_STA_FLAG_WME); 5976 if (flags & WPA_STA_SHORT_PREAMBLE) 5977 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 5978 if (flags & WPA_STA_MFP) 5979 f |= BIT(NL80211_STA_FLAG_MFP); 5980 if (flags & WPA_STA_TDLS_PEER) 5981 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 5982 5983 return f; 5984} 5985 5986 5987static int wpa_driver_nl80211_sta_add(void *priv, 5988 struct hostapd_sta_add_params *params) 5989{ 5990 struct i802_bss *bss = priv; 5991 struct wpa_driver_nl80211_data *drv = bss->drv; 5992 struct nl_msg *msg, *wme = NULL; 5993 struct nl80211_sta_flag_update upd; 5994 int ret = -ENOBUFS; 5995 5996 if ((params->flags & WPA_STA_TDLS_PEER) && 5997 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 5998 return -EOPNOTSUPP; 5999 6000 msg = nlmsg_alloc(); 6001 if (!msg) 6002 return -ENOMEM; 6003 6004 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR, 6005 params->set ? "Set" : "Add", MAC2STR(params->addr)); 6006 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 6007 NL80211_CMD_NEW_STATION); 6008 6009 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6010 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 6011 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 6012 params->supp_rates); 6013 wpa_hexdump(MSG_DEBUG, " * supported rates", params->supp_rates, 6014 params->supp_rates_len); 6015 if (!params->set) { 6016 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 6017 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 6018 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 6019 params->listen_interval); 6020 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 6021 params->listen_interval); 6022 } 6023 if (params->ht_capabilities) { 6024 wpa_hexdump(MSG_DEBUG, " * ht_capabilities", 6025 (u8 *) params->ht_capabilities, 6026 sizeof(*params->ht_capabilities)); 6027 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 6028 sizeof(*params->ht_capabilities), 6029 params->ht_capabilities); 6030 } 6031 6032 if (params->vht_capabilities) { 6033 wpa_hexdump(MSG_DEBUG, " * vht_capabilities", 6034 (u8 *) params->vht_capabilities, 6035 sizeof(*params->vht_capabilities)); 6036 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, 6037 sizeof(*params->vht_capabilities), 6038 params->vht_capabilities); 6039 } 6040 6041 wpa_printf(MSG_DEBUG, " * capability=0x%x", params->capability); 6042 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability); 6043 6044 if (params->ext_capab) { 6045 wpa_hexdump(MSG_DEBUG, " * ext_capab", 6046 params->ext_capab, params->ext_capab_len); 6047 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY, 6048 params->ext_capab_len, params->ext_capab); 6049 } 6050 6051 os_memset(&upd, 0, sizeof(upd)); 6052 upd.mask = sta_flags_nl80211(params->flags); 6053 upd.set = upd.mask; 6054 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x", 6055 upd.set, upd.mask); 6056 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6057 6058 if (params->flags & WPA_STA_WMM) { 6059 wme = nlmsg_alloc(); 6060 if (!wme) 6061 goto nla_put_failure; 6062 6063 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo); 6064 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES, 6065 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 6066 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP, 6067 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) & 6068 WMM_QOSINFO_STA_SP_MASK); 6069 if (nla_put_nested(msg, NL80211_ATTR_STA_WME, wme) < 0) 6070 goto nla_put_failure; 6071 } 6072 6073 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6074 msg = NULL; 6075 if (ret) 6076 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 6077 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 6078 strerror(-ret)); 6079 if (ret == -EEXIST) 6080 ret = 0; 6081 nla_put_failure: 6082 nlmsg_free(wme); 6083 nlmsg_free(msg); 6084 return ret; 6085} 6086 6087 6088static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr) 6089{ 6090 struct wpa_driver_nl80211_data *drv = bss->drv; 6091 struct nl_msg *msg; 6092 int ret; 6093 6094 msg = nlmsg_alloc(); 6095 if (!msg) 6096 return -ENOMEM; 6097 6098 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 6099 6100 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6101 if_nametoindex(bss->ifname)); 6102 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6103 6104 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6105 if (ret == -ENOENT) 6106 return 0; 6107 return ret; 6108 nla_put_failure: 6109 nlmsg_free(msg); 6110 return -ENOBUFS; 6111} 6112 6113 6114static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 6115 int ifidx) 6116{ 6117 struct nl_msg *msg; 6118 6119 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 6120 6121 /* stop listening for EAPOL on this interface */ 6122 del_ifidx(drv, ifidx); 6123 6124 msg = nlmsg_alloc(); 6125 if (!msg) 6126 goto nla_put_failure; 6127 6128 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 6129 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 6130 6131 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 6132 return; 6133 msg = NULL; 6134 nla_put_failure: 6135 nlmsg_free(msg); 6136 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 6137} 6138 6139 6140static const char * nl80211_iftype_str(enum nl80211_iftype mode) 6141{ 6142 switch (mode) { 6143 case NL80211_IFTYPE_ADHOC: 6144 return "ADHOC"; 6145 case NL80211_IFTYPE_STATION: 6146 return "STATION"; 6147 case NL80211_IFTYPE_AP: 6148 return "AP"; 6149 case NL80211_IFTYPE_MONITOR: 6150 return "MONITOR"; 6151 case NL80211_IFTYPE_P2P_CLIENT: 6152 return "P2P_CLIENT"; 6153 case NL80211_IFTYPE_P2P_GO: 6154 return "P2P_GO"; 6155 default: 6156 return "unknown"; 6157 } 6158} 6159 6160 6161static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 6162 const char *ifname, 6163 enum nl80211_iftype iftype, 6164 const u8 *addr, int wds) 6165{ 6166 struct nl_msg *msg, *flags = NULL; 6167 int ifidx; 6168 int ret = -ENOBUFS; 6169 6170 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 6171 iftype, nl80211_iftype_str(iftype)); 6172 6173 msg = nlmsg_alloc(); 6174 if (!msg) 6175 return -1; 6176 6177 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 6178 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6179 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 6180 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 6181 6182 if (iftype == NL80211_IFTYPE_MONITOR) { 6183 int err; 6184 6185 flags = nlmsg_alloc(); 6186 if (!flags) 6187 goto nla_put_failure; 6188 6189 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); 6190 6191 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); 6192 6193 nlmsg_free(flags); 6194 6195 if (err) 6196 goto nla_put_failure; 6197 } else if (wds) { 6198 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 6199 } 6200 6201 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6202 msg = NULL; 6203 if (ret) { 6204 nla_put_failure: 6205 nlmsg_free(msg); 6206 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 6207 ifname, ret, strerror(-ret)); 6208 return ret; 6209 } 6210 6211 ifidx = if_nametoindex(ifname); 6212 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 6213 ifname, ifidx); 6214 6215 if (ifidx <= 0) 6216 return -1; 6217 6218 /* start listening for EAPOL on this interface */ 6219 add_ifidx(drv, ifidx); 6220 6221 if (addr && iftype != NL80211_IFTYPE_MONITOR && 6222 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 6223 nl80211_remove_iface(drv, ifidx); 6224 return -1; 6225 } 6226 6227 return ifidx; 6228} 6229 6230 6231static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 6232 const char *ifname, enum nl80211_iftype iftype, 6233 const u8 *addr, int wds) 6234{ 6235 int ret; 6236 6237 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 6238 6239 /* if error occurred and interface exists already */ 6240 if (ret == -ENFILE && if_nametoindex(ifname)) { 6241 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 6242 6243 /* Try to remove the interface that was already there. */ 6244 nl80211_remove_iface(drv, if_nametoindex(ifname)); 6245 6246 /* Try to create the interface again */ 6247 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 6248 wds); 6249 } 6250 6251 if (ret >= 0 && is_p2p_interface(iftype)) 6252 nl80211_disable_11b_rates(drv, ret, 1); 6253 6254 return ret; 6255} 6256 6257 6258static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 6259{ 6260 struct ieee80211_hdr *hdr; 6261 u16 fc; 6262 union wpa_event_data event; 6263 6264 hdr = (struct ieee80211_hdr *) buf; 6265 fc = le_to_host16(hdr->frame_control); 6266 6267 os_memset(&event, 0, sizeof(event)); 6268 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 6269 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 6270 event.tx_status.dst = hdr->addr1; 6271 event.tx_status.data = buf; 6272 event.tx_status.data_len = len; 6273 event.tx_status.ack = ok; 6274 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 6275} 6276 6277 6278static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 6279 u8 *buf, size_t len) 6280{ 6281 struct ieee80211_hdr *hdr = (void *)buf; 6282 u16 fc; 6283 union wpa_event_data event; 6284 6285 if (len < sizeof(*hdr)) 6286 return; 6287 6288 fc = le_to_host16(hdr->frame_control); 6289 6290 os_memset(&event, 0, sizeof(event)); 6291 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 6292 event.rx_from_unknown.addr = hdr->addr2; 6293 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 6294 (WLAN_FC_FROMDS | WLAN_FC_TODS); 6295 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 6296} 6297 6298 6299static void handle_frame(struct wpa_driver_nl80211_data *drv, 6300 u8 *buf, size_t len, int datarate, int ssi_signal) 6301{ 6302 struct ieee80211_hdr *hdr; 6303 u16 fc; 6304 union wpa_event_data event; 6305 6306 hdr = (struct ieee80211_hdr *) buf; 6307 fc = le_to_host16(hdr->frame_control); 6308 6309 switch (WLAN_FC_GET_TYPE(fc)) { 6310 case WLAN_FC_TYPE_MGMT: 6311 os_memset(&event, 0, sizeof(event)); 6312 event.rx_mgmt.frame = buf; 6313 event.rx_mgmt.frame_len = len; 6314 event.rx_mgmt.datarate = datarate; 6315 event.rx_mgmt.ssi_signal = ssi_signal; 6316 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 6317 break; 6318 case WLAN_FC_TYPE_CTRL: 6319 /* can only get here with PS-Poll frames */ 6320 wpa_printf(MSG_DEBUG, "CTRL"); 6321 from_unknown_sta(drv, buf, len); 6322 break; 6323 case WLAN_FC_TYPE_DATA: 6324 from_unknown_sta(drv, buf, len); 6325 break; 6326 } 6327} 6328 6329 6330static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 6331{ 6332 struct wpa_driver_nl80211_data *drv = eloop_ctx; 6333 int len; 6334 unsigned char buf[3000]; 6335 struct ieee80211_radiotap_iterator iter; 6336 int ret; 6337 int datarate = 0, ssi_signal = 0; 6338 int injected = 0, failed = 0, rxflags = 0; 6339 6340 len = recv(sock, buf, sizeof(buf), 0); 6341 if (len < 0) { 6342 perror("recv"); 6343 return; 6344 } 6345 6346 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 6347 printf("received invalid radiotap frame\n"); 6348 return; 6349 } 6350 6351 while (1) { 6352 ret = ieee80211_radiotap_iterator_next(&iter); 6353 if (ret == -ENOENT) 6354 break; 6355 if (ret) { 6356 printf("received invalid radiotap frame (%d)\n", ret); 6357 return; 6358 } 6359 switch (iter.this_arg_index) { 6360 case IEEE80211_RADIOTAP_FLAGS: 6361 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 6362 len -= 4; 6363 break; 6364 case IEEE80211_RADIOTAP_RX_FLAGS: 6365 rxflags = 1; 6366 break; 6367 case IEEE80211_RADIOTAP_TX_FLAGS: 6368 injected = 1; 6369 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 6370 IEEE80211_RADIOTAP_F_TX_FAIL; 6371 break; 6372 case IEEE80211_RADIOTAP_DATA_RETRIES: 6373 break; 6374 case IEEE80211_RADIOTAP_CHANNEL: 6375 /* TODO: convert from freq/flags to channel number */ 6376 break; 6377 case IEEE80211_RADIOTAP_RATE: 6378 datarate = *iter.this_arg * 5; 6379 break; 6380 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 6381 ssi_signal = (s8) *iter.this_arg; 6382 break; 6383 } 6384 } 6385 6386 if (rxflags && injected) 6387 return; 6388 6389 if (!injected) 6390 handle_frame(drv, buf + iter.max_length, 6391 len - iter.max_length, datarate, ssi_signal); 6392 else 6393 handle_tx_callback(drv->ctx, buf + iter.max_length, 6394 len - iter.max_length, !failed); 6395} 6396 6397 6398/* 6399 * we post-process the filter code later and rewrite 6400 * this to the offset to the last instruction 6401 */ 6402#define PASS 0xFF 6403#define FAIL 0xFE 6404 6405static struct sock_filter msock_filter_insns[] = { 6406 /* 6407 * do a little-endian load of the radiotap length field 6408 */ 6409 /* load lower byte into A */ 6410 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 6411 /* put it into X (== index register) */ 6412 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6413 /* load upper byte into A */ 6414 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 6415 /* left-shift it by 8 */ 6416 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 6417 /* or with X */ 6418 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 6419 /* put result into X */ 6420 BPF_STMT(BPF_MISC| BPF_TAX, 0), 6421 6422 /* 6423 * Allow management frames through, this also gives us those 6424 * management frames that we sent ourselves with status 6425 */ 6426 /* load the lower byte of the IEEE 802.11 frame control field */ 6427 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6428 /* mask off frame type and version */ 6429 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 6430 /* accept frame if it's both 0, fall through otherwise */ 6431 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 6432 6433 /* 6434 * TODO: add a bit to radiotap RX flags that indicates 6435 * that the sending station is not associated, then 6436 * add a filter here that filters on our DA and that flag 6437 * to allow us to deauth frames to that bad station. 6438 * 6439 * For now allow all To DS data frames through. 6440 */ 6441 /* load the IEEE 802.11 frame control field */ 6442 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 6443 /* mask off frame type, version and DS status */ 6444 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 6445 /* accept frame if version 0, type 2 and To DS, fall through otherwise 6446 */ 6447 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 6448 6449#if 0 6450 /* 6451 * drop non-data frames 6452 */ 6453 /* load the lower byte of the frame control field */ 6454 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6455 /* mask off QoS bit */ 6456 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 6457 /* drop non-data frames */ 6458 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 6459#endif 6460 /* load the upper byte of the frame control field */ 6461 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 6462 /* mask off toDS/fromDS */ 6463 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 6464 /* accept WDS frames */ 6465 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 6466 6467 /* 6468 * add header length to index 6469 */ 6470 /* load the lower byte of the frame control field */ 6471 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 6472 /* mask off QoS bit */ 6473 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 6474 /* right shift it by 6 to give 0 or 2 */ 6475 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 6476 /* add data frame header length */ 6477 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 6478 /* add index, was start of 802.11 header */ 6479 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 6480 /* move to index, now start of LL header */ 6481 BPF_STMT(BPF_MISC | BPF_TAX, 0), 6482 6483 /* 6484 * Accept empty data frames, we use those for 6485 * polling activity. 6486 */ 6487 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 6488 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 6489 6490 /* 6491 * Accept EAPOL frames 6492 */ 6493 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 6494 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 6495 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 6496 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 6497 6498 /* keep these last two statements or change the code below */ 6499 /* return 0 == "DROP" */ 6500 BPF_STMT(BPF_RET | BPF_K, 0), 6501 /* return ~0 == "keep all" */ 6502 BPF_STMT(BPF_RET | BPF_K, ~0), 6503}; 6504 6505static struct sock_fprog msock_filter = { 6506 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 6507 .filter = msock_filter_insns, 6508}; 6509 6510 6511static int add_monitor_filter(int s) 6512{ 6513 int idx; 6514 6515 /* rewrite all PASS/FAIL jump offsets */ 6516 for (idx = 0; idx < msock_filter.len; idx++) { 6517 struct sock_filter *insn = &msock_filter_insns[idx]; 6518 6519 if (BPF_CLASS(insn->code) == BPF_JMP) { 6520 if (insn->code == (BPF_JMP|BPF_JA)) { 6521 if (insn->k == PASS) 6522 insn->k = msock_filter.len - idx - 2; 6523 else if (insn->k == FAIL) 6524 insn->k = msock_filter.len - idx - 3; 6525 } 6526 6527 if (insn->jt == PASS) 6528 insn->jt = msock_filter.len - idx - 2; 6529 else if (insn->jt == FAIL) 6530 insn->jt = msock_filter.len - idx - 3; 6531 6532 if (insn->jf == PASS) 6533 insn->jf = msock_filter.len - idx - 2; 6534 else if (insn->jf == FAIL) 6535 insn->jf = msock_filter.len - idx - 3; 6536 } 6537 } 6538 6539 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6540 &msock_filter, sizeof(msock_filter))) { 6541 perror("SO_ATTACH_FILTER"); 6542 return -1; 6543 } 6544 6545 return 0; 6546} 6547 6548 6549static void nl80211_remove_monitor_interface( 6550 struct wpa_driver_nl80211_data *drv) 6551{ 6552 drv->monitor_refcount--; 6553 if (drv->monitor_refcount > 0) 6554 return; 6555 6556 if (drv->monitor_ifidx >= 0) { 6557 nl80211_remove_iface(drv, drv->monitor_ifidx); 6558 drv->monitor_ifidx = -1; 6559 } 6560 if (drv->monitor_sock >= 0) { 6561 eloop_unregister_read_sock(drv->monitor_sock); 6562 close(drv->monitor_sock); 6563 drv->monitor_sock = -1; 6564 } 6565} 6566 6567 6568static int 6569nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6570{ 6571 char buf[IFNAMSIZ]; 6572 struct sockaddr_ll ll; 6573 int optval; 6574 socklen_t optlen; 6575 6576 if (drv->monitor_ifidx >= 0) { 6577 drv->monitor_refcount++; 6578 return 0; 6579 } 6580 6581 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6582 /* 6583 * P2P interface name is of the format p2p-%s-%d. For monitor 6584 * interface name corresponding to P2P GO, replace "p2p-" with 6585 * "mon-" to retain the same interface name length and to 6586 * indicate that it is a monitor interface. 6587 */ 6588 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6589 } else { 6590 /* Non-P2P interface with AP functionality. */ 6591 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6592 } 6593 6594 buf[IFNAMSIZ - 1] = '\0'; 6595 6596 drv->monitor_ifidx = 6597 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6598 0); 6599 6600 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6601 /* 6602 * This is backward compatibility for a few versions of 6603 * the kernel only that didn't advertise the right 6604 * attributes for the only driver that then supported 6605 * AP mode w/o monitor -- ath6kl. 6606 */ 6607 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6608 "monitor interface type - try to run without it"); 6609 drv->device_ap_sme = 1; 6610 } 6611 6612 if (drv->monitor_ifidx < 0) 6613 return -1; 6614 6615 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6616 goto error; 6617 6618 memset(&ll, 0, sizeof(ll)); 6619 ll.sll_family = AF_PACKET; 6620 ll.sll_ifindex = drv->monitor_ifidx; 6621 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6622 if (drv->monitor_sock < 0) { 6623 perror("socket[PF_PACKET,SOCK_RAW]"); 6624 goto error; 6625 } 6626 6627 if (add_monitor_filter(drv->monitor_sock)) { 6628 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6629 "interface; do filtering in user space"); 6630 /* This works, but will cost in performance. */ 6631 } 6632 6633 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6634 perror("monitor socket bind"); 6635 goto error; 6636 } 6637 6638 optlen = sizeof(optval); 6639 optval = 20; 6640 if (setsockopt 6641 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6642 perror("Failed to set socket priority"); 6643 goto error; 6644 } 6645 6646 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6647 drv, NULL)) { 6648 printf("Could not register monitor read socket\n"); 6649 goto error; 6650 } 6651 6652 return 0; 6653 error: 6654 nl80211_remove_monitor_interface(drv); 6655 return -1; 6656} 6657 6658 6659static int nl80211_setup_ap(struct i802_bss *bss) 6660{ 6661 struct wpa_driver_nl80211_data *drv = bss->drv; 6662 6663 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6664 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6665 6666 /* 6667 * Disable Probe Request reporting unless we need it in this way for 6668 * devices that include the AP SME, in the other case (unless using 6669 * monitor iface) we'll get it through the nl_mgmt socket instead. 6670 */ 6671 if (!drv->device_ap_sme) 6672 wpa_driver_nl80211_probe_req_report(bss, 0); 6673 6674 if (!drv->device_ap_sme && !drv->use_monitor) 6675 if (nl80211_mgmt_subscribe_ap(bss)) 6676 return -1; 6677 6678 if (drv->device_ap_sme && !drv->use_monitor) 6679 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6680 return -1; 6681 6682 if (!drv->device_ap_sme && drv->use_monitor && 6683 nl80211_create_monitor_interface(drv) && 6684 !drv->device_ap_sme) 6685 return -1; 6686 6687#ifdef ANDROID_P2P 6688 if (drv->device_ap_sme && drv->use_monitor) 6689 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6690 return -1; 6691 6692 if (drv->use_monitor && 6693 nl80211_create_monitor_interface(drv)) 6694 return -1; 6695#endif 6696 6697 if (drv->device_ap_sme && 6698 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6699 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6700 "Probe Request frame reporting in AP mode"); 6701 /* Try to survive without this */ 6702 } 6703 6704 return 0; 6705} 6706 6707 6708static void nl80211_teardown_ap(struct i802_bss *bss) 6709{ 6710 struct wpa_driver_nl80211_data *drv = bss->drv; 6711 6712 if (drv->device_ap_sme) { 6713 wpa_driver_nl80211_probe_req_report(bss, 0); 6714 if (!drv->use_monitor) 6715 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6716 } else if (drv->use_monitor) 6717 nl80211_remove_monitor_interface(drv); 6718 else 6719 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6720 6721 bss->beacon_set = 0; 6722} 6723 6724 6725static int nl80211_send_eapol_data(struct i802_bss *bss, 6726 const u8 *addr, const u8 *data, 6727 size_t data_len) 6728{ 6729 struct sockaddr_ll ll; 6730 int ret; 6731 6732 if (bss->drv->eapol_tx_sock < 0) { 6733 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6734 return -1; 6735 } 6736 6737 os_memset(&ll, 0, sizeof(ll)); 6738 ll.sll_family = AF_PACKET; 6739 ll.sll_ifindex = bss->ifindex; 6740 ll.sll_protocol = htons(ETH_P_PAE); 6741 ll.sll_halen = ETH_ALEN; 6742 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6743 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6744 (struct sockaddr *) &ll, sizeof(ll)); 6745 if (ret < 0) 6746 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6747 strerror(errno)); 6748 6749 return ret; 6750} 6751 6752 6753static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6754 6755static int wpa_driver_nl80211_hapd_send_eapol( 6756 void *priv, const u8 *addr, const u8 *data, 6757 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6758{ 6759 struct i802_bss *bss = priv; 6760 struct wpa_driver_nl80211_data *drv = bss->drv; 6761 struct ieee80211_hdr *hdr; 6762 size_t len; 6763 u8 *pos; 6764 int res; 6765 int qos = flags & WPA_STA_WMM; 6766#ifndef ANDROID_P2P 6767 if (drv->device_ap_sme || !drv->use_monitor) 6768#else 6769 if (drv->device_ap_sme && !drv->use_monitor) 6770#endif 6771 return nl80211_send_eapol_data(bss, addr, data, data_len); 6772 6773 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6774 data_len; 6775 hdr = os_zalloc(len); 6776 if (hdr == NULL) { 6777 printf("malloc() failed for i802_send_data(len=%lu)\n", 6778 (unsigned long) len); 6779 return -1; 6780 } 6781 6782 hdr->frame_control = 6783 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6784 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6785 if (encrypt) 6786 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6787 if (qos) { 6788 hdr->frame_control |= 6789 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6790 } 6791 6792 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6793 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6794 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6795 pos = (u8 *) (hdr + 1); 6796 6797 if (qos) { 6798 /* Set highest priority in QoS header */ 6799 pos[0] = 7; 6800 pos[1] = 0; 6801 pos += 2; 6802 } 6803 6804 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6805 pos += sizeof(rfc1042_header); 6806 WPA_PUT_BE16(pos, ETH_P_PAE); 6807 pos += 2; 6808 memcpy(pos, data, data_len); 6809 6810 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6811 0, 0, 0, 0); 6812 if (res < 0) { 6813 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6814 "failed: %d (%s)", 6815 (unsigned long) len, errno, strerror(errno)); 6816 } 6817 os_free(hdr); 6818 6819 return res; 6820} 6821 6822 6823static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6824 int total_flags, 6825 int flags_or, int flags_and) 6826{ 6827 struct i802_bss *bss = priv; 6828 struct wpa_driver_nl80211_data *drv = bss->drv; 6829 struct nl_msg *msg, *flags = NULL; 6830 struct nl80211_sta_flag_update upd; 6831 6832 msg = nlmsg_alloc(); 6833 if (!msg) 6834 return -ENOMEM; 6835 6836 flags = nlmsg_alloc(); 6837 if (!flags) { 6838 nlmsg_free(msg); 6839 return -ENOMEM; 6840 } 6841 6842 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6843 6844 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6845 if_nametoindex(bss->ifname)); 6846 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6847 6848 /* 6849 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6850 * can be removed eventually. 6851 */ 6852 if (total_flags & WPA_STA_AUTHORIZED) 6853 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED); 6854 6855 if (total_flags & WPA_STA_WMM) 6856 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME); 6857 6858 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6859 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE); 6860 6861 if (total_flags & WPA_STA_MFP) 6862 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP); 6863 6864 if (total_flags & WPA_STA_TDLS_PEER) 6865 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER); 6866 6867 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags)) 6868 goto nla_put_failure; 6869 6870 os_memset(&upd, 0, sizeof(upd)); 6871 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6872 upd.set = sta_flags_nl80211(flags_or); 6873 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6874 6875 nlmsg_free(flags); 6876 6877 return send_and_recv_msgs(drv, msg, NULL, NULL); 6878 nla_put_failure: 6879 nlmsg_free(msg); 6880 nlmsg_free(flags); 6881 return -ENOBUFS; 6882} 6883 6884 6885static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6886 struct wpa_driver_associate_params *params) 6887{ 6888 enum nl80211_iftype nlmode, old_mode; 6889 struct hostapd_freq_params freq = { 6890 .freq = params->freq, 6891 }; 6892 6893 if (params->p2p) { 6894 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6895 "group (GO)"); 6896 nlmode = NL80211_IFTYPE_P2P_GO; 6897 } else 6898 nlmode = NL80211_IFTYPE_AP; 6899 6900 old_mode = drv->nlmode; 6901 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode)) { 6902 nl80211_remove_monitor_interface(drv); 6903 return -1; 6904 } 6905 6906 if (wpa_driver_nl80211_set_freq(&drv->first_bss, &freq)) { 6907 if (old_mode != nlmode) 6908 wpa_driver_nl80211_set_mode(&drv->first_bss, old_mode); 6909 nl80211_remove_monitor_interface(drv); 6910 return -1; 6911 } 6912 6913 return 0; 6914} 6915 6916 6917static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 6918{ 6919 struct nl_msg *msg; 6920 int ret = -1; 6921 6922 msg = nlmsg_alloc(); 6923 if (!msg) 6924 return -1; 6925 6926 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 6927 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6928 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6929 msg = NULL; 6930 if (ret) { 6931 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 6932 "(%s)", ret, strerror(-ret)); 6933 goto nla_put_failure; 6934 } 6935 6936 ret = 0; 6937 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 6938 6939nla_put_failure: 6940 nlmsg_free(msg); 6941 return ret; 6942} 6943 6944 6945static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 6946 struct wpa_driver_associate_params *params) 6947{ 6948 struct nl_msg *msg; 6949 int ret = -1; 6950 int count = 0; 6951 6952 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 6953 6954 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 6955 NL80211_IFTYPE_ADHOC)) { 6956 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 6957 "IBSS mode"); 6958 return -1; 6959 } 6960 6961retry: 6962 msg = nlmsg_alloc(); 6963 if (!msg) 6964 return -1; 6965 6966 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 6967 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6968 6969 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 6970 goto nla_put_failure; 6971 6972 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6973 params->ssid, params->ssid_len); 6974 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6975 params->ssid); 6976 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6977 drv->ssid_len = params->ssid_len; 6978 6979 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6980 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6981 6982 ret = nl80211_set_conn_keys(params, msg); 6983 if (ret) 6984 goto nla_put_failure; 6985 6986 if (params->bssid && params->fixed_bssid) { 6987 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 6988 MAC2STR(params->bssid)); 6989 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6990 } 6991 6992 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6993 params->key_mgmt_suite == KEY_MGMT_PSK || 6994 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 6995 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 6996 wpa_printf(MSG_DEBUG, " * control port"); 6997 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 6998 } 6999 7000 if (params->wpa_ie) { 7001 wpa_hexdump(MSG_DEBUG, 7002 " * Extra IEs for Beacon/Probe Response frames", 7003 params->wpa_ie, params->wpa_ie_len); 7004 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7005 params->wpa_ie); 7006 } 7007 7008 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7009 msg = NULL; 7010 if (ret) { 7011 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 7012 ret, strerror(-ret)); 7013 count++; 7014 if (ret == -EALREADY && count == 1) { 7015 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 7016 "forced leave"); 7017 nl80211_leave_ibss(drv); 7018 nlmsg_free(msg); 7019 goto retry; 7020 } 7021 7022 goto nla_put_failure; 7023 } 7024 ret = 0; 7025 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 7026 7027nla_put_failure: 7028 nlmsg_free(msg); 7029 return ret; 7030} 7031 7032 7033static int wpa_driver_nl80211_try_connect( 7034 struct wpa_driver_nl80211_data *drv, 7035 struct wpa_driver_associate_params *params) 7036{ 7037 struct nl_msg *msg; 7038 enum nl80211_auth_type type; 7039 int ret = 0; 7040 int algs; 7041 7042 msg = nlmsg_alloc(); 7043 if (!msg) 7044 return -1; 7045 7046 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 7047 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 7048 7049 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7050 if (params->bssid) { 7051 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7052 MAC2STR(params->bssid)); 7053 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7054 } 7055 if (params->freq) { 7056 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7057 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7058 } 7059 if (params->bg_scan_period >= 0) { 7060 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7061 params->bg_scan_period); 7062 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7063 params->bg_scan_period); 7064 } 7065 if (params->ssid) { 7066 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7067 params->ssid, params->ssid_len); 7068 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7069 params->ssid); 7070 if (params->ssid_len > sizeof(drv->ssid)) 7071 goto nla_put_failure; 7072 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7073 drv->ssid_len = params->ssid_len; 7074 } 7075 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7076 if (params->wpa_ie) 7077 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7078 params->wpa_ie); 7079 7080 algs = 0; 7081 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7082 algs++; 7083 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7084 algs++; 7085 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7086 algs++; 7087 if (algs > 1) { 7088 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 7089 "selection"); 7090 goto skip_auth_type; 7091 } 7092 7093 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 7094 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 7095 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 7096 type = NL80211_AUTHTYPE_SHARED_KEY; 7097 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 7098 type = NL80211_AUTHTYPE_NETWORK_EAP; 7099 else if (params->auth_alg & WPA_AUTH_ALG_FT) 7100 type = NL80211_AUTHTYPE_FT; 7101 else 7102 goto nla_put_failure; 7103 7104 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 7105 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 7106 7107skip_auth_type: 7108 if (params->wpa_proto) { 7109 enum nl80211_wpa_versions ver = 0; 7110 7111 if (params->wpa_proto & WPA_PROTO_WPA) 7112 ver |= NL80211_WPA_VERSION_1; 7113 if (params->wpa_proto & WPA_PROTO_RSN) 7114 ver |= NL80211_WPA_VERSION_2; 7115 7116 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 7117 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 7118 } 7119 7120 if (params->pairwise_suite != CIPHER_NONE) { 7121 int cipher; 7122 7123 switch (params->pairwise_suite) { 7124 case CIPHER_SMS4: 7125 cipher = WLAN_CIPHER_SUITE_SMS4; 7126 break; 7127 case CIPHER_WEP40: 7128 cipher = WLAN_CIPHER_SUITE_WEP40; 7129 break; 7130 case CIPHER_WEP104: 7131 cipher = WLAN_CIPHER_SUITE_WEP104; 7132 break; 7133 case CIPHER_CCMP: 7134 cipher = WLAN_CIPHER_SUITE_CCMP; 7135 break; 7136 case CIPHER_GCMP: 7137 cipher = WLAN_CIPHER_SUITE_GCMP; 7138 break; 7139 case CIPHER_TKIP: 7140 default: 7141 cipher = WLAN_CIPHER_SUITE_TKIP; 7142 break; 7143 } 7144 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7145 } 7146 7147 if (params->group_suite != CIPHER_NONE) { 7148 int cipher; 7149 7150 switch (params->group_suite) { 7151 case CIPHER_SMS4: 7152 cipher = WLAN_CIPHER_SUITE_SMS4; 7153 break; 7154 case CIPHER_WEP40: 7155 cipher = WLAN_CIPHER_SUITE_WEP40; 7156 break; 7157 case CIPHER_WEP104: 7158 cipher = WLAN_CIPHER_SUITE_WEP104; 7159 break; 7160 case CIPHER_CCMP: 7161 cipher = WLAN_CIPHER_SUITE_CCMP; 7162 break; 7163 case CIPHER_GCMP: 7164 cipher = WLAN_CIPHER_SUITE_GCMP; 7165 break; 7166 case CIPHER_TKIP: 7167 default: 7168 cipher = WLAN_CIPHER_SUITE_TKIP; 7169 break; 7170 } 7171 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7172 } 7173 7174 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7175 params->key_mgmt_suite == KEY_MGMT_PSK || 7176 params->key_mgmt_suite == KEY_MGMT_CCKM) { 7177 int mgmt = WLAN_AKM_SUITE_PSK; 7178 7179 switch (params->key_mgmt_suite) { 7180 case KEY_MGMT_CCKM: 7181 mgmt = WLAN_AKM_SUITE_CCKM; 7182 break; 7183 case KEY_MGMT_802_1X: 7184 mgmt = WLAN_AKM_SUITE_8021X; 7185 break; 7186 case KEY_MGMT_PSK: 7187 default: 7188 mgmt = WLAN_AKM_SUITE_PSK; 7189 break; 7190 } 7191 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 7192 } 7193 7194#ifdef CONFIG_IEEE80211W 7195 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7196 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7197#endif /* CONFIG_IEEE80211W */ 7198 7199 if (params->disable_ht) 7200 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7201 7202 if (params->htcaps && params->htcaps_mask) { 7203 int sz = sizeof(struct ieee80211_ht_capabilities); 7204 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7205 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7206 params->htcaps_mask); 7207 } 7208 7209#ifdef CONFIG_VHT_OVERRIDES 7210 if (params->disable_vht) { 7211 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7212 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7213 } 7214 7215 if (params->vhtcaps && params->vhtcaps_mask) { 7216 int sz = sizeof(struct ieee80211_vht_capabilities); 7217 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7218 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7219 params->vhtcaps_mask); 7220 } 7221#endif /* CONFIG_VHT_OVERRIDES */ 7222 7223 ret = nl80211_set_conn_keys(params, msg); 7224 if (ret) 7225 goto nla_put_failure; 7226 7227 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7228 msg = NULL; 7229 if (ret) { 7230 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 7231 "(%s)", ret, strerror(-ret)); 7232 goto nla_put_failure; 7233 } 7234 ret = 0; 7235 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 7236 7237nla_put_failure: 7238 nlmsg_free(msg); 7239 return ret; 7240 7241} 7242 7243 7244static int wpa_driver_nl80211_connect( 7245 struct wpa_driver_nl80211_data *drv, 7246 struct wpa_driver_associate_params *params) 7247{ 7248 int ret = wpa_driver_nl80211_try_connect(drv, params); 7249 if (ret == -EALREADY) { 7250 /* 7251 * cfg80211 does not currently accept new connections if 7252 * we are already connected. As a workaround, force 7253 * disconnection and try again. 7254 */ 7255 wpa_printf(MSG_DEBUG, "nl80211: Explicitly " 7256 "disconnecting before reassociation " 7257 "attempt"); 7258 if (wpa_driver_nl80211_disconnect( 7259 drv, WLAN_REASON_PREV_AUTH_NOT_VALID)) 7260 return -1; 7261 /* Ignore the next local disconnect message. */ 7262 drv->ignore_next_local_disconnect = 1; 7263 ret = wpa_driver_nl80211_try_connect(drv, params); 7264 } 7265 return ret; 7266} 7267 7268 7269static int wpa_driver_nl80211_associate( 7270 void *priv, struct wpa_driver_associate_params *params) 7271{ 7272 struct i802_bss *bss = priv; 7273 struct wpa_driver_nl80211_data *drv = bss->drv; 7274 int ret = -1; 7275 struct nl_msg *msg; 7276 7277 if (params->mode == IEEE80211_MODE_AP) 7278 return wpa_driver_nl80211_ap(drv, params); 7279 7280 if (params->mode == IEEE80211_MODE_IBSS) 7281 return wpa_driver_nl80211_ibss(drv, params); 7282 7283 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 7284 enum nl80211_iftype nlmode = params->p2p ? 7285 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 7286 7287 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 7288 return -1; 7289 return wpa_driver_nl80211_connect(drv, params); 7290 } 7291 7292 drv->associated = 0; 7293 7294 msg = nlmsg_alloc(); 7295 if (!msg) 7296 return -1; 7297 7298 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 7299 drv->ifindex); 7300 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 7301 7302 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7303 if (params->bssid) { 7304 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7305 MAC2STR(params->bssid)); 7306 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7307 } 7308 if (params->freq) { 7309 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7310 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7311 drv->assoc_freq = params->freq; 7312 } else 7313 drv->assoc_freq = 0; 7314 if (params->bg_scan_period >= 0) { 7315 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 7316 params->bg_scan_period); 7317 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 7318 params->bg_scan_period); 7319 } 7320 if (params->ssid) { 7321 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7322 params->ssid, params->ssid_len); 7323 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7324 params->ssid); 7325 if (params->ssid_len > sizeof(drv->ssid)) 7326 goto nla_put_failure; 7327 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7328 drv->ssid_len = params->ssid_len; 7329 } 7330 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 7331 if (params->wpa_ie) 7332 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7333 params->wpa_ie); 7334 7335 if (params->pairwise_suite != CIPHER_NONE) { 7336 int cipher; 7337 7338 switch (params->pairwise_suite) { 7339 case CIPHER_WEP40: 7340 cipher = WLAN_CIPHER_SUITE_WEP40; 7341 break; 7342 case CIPHER_WEP104: 7343 cipher = WLAN_CIPHER_SUITE_WEP104; 7344 break; 7345 case CIPHER_CCMP: 7346 cipher = WLAN_CIPHER_SUITE_CCMP; 7347 break; 7348 case CIPHER_GCMP: 7349 cipher = WLAN_CIPHER_SUITE_GCMP; 7350 break; 7351 case CIPHER_TKIP: 7352 default: 7353 cipher = WLAN_CIPHER_SUITE_TKIP; 7354 break; 7355 } 7356 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 7357 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 7358 } 7359 7360 if (params->group_suite != CIPHER_NONE) { 7361 int cipher; 7362 7363 switch (params->group_suite) { 7364 case CIPHER_WEP40: 7365 cipher = WLAN_CIPHER_SUITE_WEP40; 7366 break; 7367 case CIPHER_WEP104: 7368 cipher = WLAN_CIPHER_SUITE_WEP104; 7369 break; 7370 case CIPHER_CCMP: 7371 cipher = WLAN_CIPHER_SUITE_CCMP; 7372 break; 7373 case CIPHER_GCMP: 7374 cipher = WLAN_CIPHER_SUITE_GCMP; 7375 break; 7376 case CIPHER_TKIP: 7377 default: 7378 cipher = WLAN_CIPHER_SUITE_TKIP; 7379 break; 7380 } 7381 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 7382 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 7383 } 7384 7385#ifdef CONFIG_IEEE80211W 7386 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 7387 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 7388#endif /* CONFIG_IEEE80211W */ 7389 7390 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7391 7392 if (params->prev_bssid) { 7393 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 7394 MAC2STR(params->prev_bssid)); 7395 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 7396 params->prev_bssid); 7397 } 7398 7399 if (params->disable_ht) 7400 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 7401 7402 if (params->htcaps && params->htcaps_mask) { 7403 int sz = sizeof(struct ieee80211_ht_capabilities); 7404 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 7405 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 7406 params->htcaps_mask); 7407 } 7408 7409#ifdef CONFIG_VHT_OVERRIDES 7410 if (params->disable_vht) { 7411 wpa_printf(MSG_DEBUG, " * VHT disabled"); 7412 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 7413 } 7414 7415 if (params->vhtcaps && params->vhtcaps_mask) { 7416 int sz = sizeof(struct ieee80211_vht_capabilities); 7417 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 7418 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 7419 params->vhtcaps_mask); 7420 } 7421#endif /* CONFIG_VHT_OVERRIDES */ 7422 7423 if (params->p2p) 7424 wpa_printf(MSG_DEBUG, " * P2P group"); 7425 7426 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7427 msg = NULL; 7428 if (ret) { 7429 wpa_dbg(drv->ctx, MSG_DEBUG, 7430 "nl80211: MLME command failed (assoc): ret=%d (%s)", 7431 ret, strerror(-ret)); 7432 nl80211_dump_scan(drv); 7433 goto nla_put_failure; 7434 } 7435 ret = 0; 7436 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 7437 "successfully"); 7438 7439nla_put_failure: 7440 nlmsg_free(msg); 7441 return ret; 7442} 7443 7444 7445static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 7446 int ifindex, enum nl80211_iftype mode) 7447{ 7448 struct nl_msg *msg; 7449 int ret = -ENOBUFS; 7450 7451 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 7452 ifindex, mode, nl80211_iftype_str(mode)); 7453 7454 msg = nlmsg_alloc(); 7455 if (!msg) 7456 return -ENOMEM; 7457 7458 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 7459 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 7460 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 7461 7462 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7463 msg = NULL; 7464 if (!ret) 7465 return 0; 7466nla_put_failure: 7467 nlmsg_free(msg); 7468 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 7469 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 7470 return ret; 7471} 7472 7473 7474static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 7475 enum nl80211_iftype nlmode) 7476{ 7477 struct wpa_driver_nl80211_data *drv = bss->drv; 7478 int ret = -1; 7479 int i; 7480 int was_ap = is_ap_interface(drv->nlmode); 7481 int res; 7482 7483 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 7484 if (res == 0) { 7485 drv->nlmode = nlmode; 7486 ret = 0; 7487 goto done; 7488 } 7489 7490 if (res == -ENODEV) 7491 return -1; 7492 7493 if (nlmode == drv->nlmode) { 7494 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 7495 "requested mode - ignore error"); 7496 ret = 0; 7497 goto done; /* Already in the requested mode */ 7498 } 7499 7500 /* mac80211 doesn't allow mode changes while the device is up, so 7501 * take the device down, try to set the mode again, and bring the 7502 * device back up. 7503 */ 7504 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 7505 "interface down"); 7506 for (i = 0; i < 10; i++) { 7507 res = linux_set_iface_flags(drv->global->ioctl_sock, 7508 bss->ifname, 0); 7509 if (res == -EACCES || res == -ENODEV) 7510 break; 7511 if (res == 0) { 7512 /* Try to set the mode again while the interface is 7513 * down */ 7514 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 7515 if (ret == -EACCES) 7516 break; 7517 res = linux_set_iface_flags(drv->global->ioctl_sock, 7518 bss->ifname, 1); 7519 if (res && !ret) 7520 ret = -1; 7521 else if (ret != -EBUSY) 7522 break; 7523 } else 7524 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 7525 "interface down"); 7526 os_sleep(0, 100000); 7527 } 7528 7529 if (!ret) { 7530 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 7531 "interface is down"); 7532 drv->nlmode = nlmode; 7533 drv->ignore_if_down_event = 1; 7534 } 7535 7536done: 7537 if (ret) { 7538 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 7539 "from %d failed", nlmode, drv->nlmode); 7540 return ret; 7541 } 7542 7543 if (is_p2p_interface(nlmode)) 7544 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 7545 else if (drv->disabled_11b_rates) 7546 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 7547 7548 if (is_ap_interface(nlmode)) { 7549 nl80211_mgmt_unsubscribe(bss, "start AP"); 7550 /* Setup additional AP mode functionality if needed */ 7551 if (nl80211_setup_ap(bss)) 7552 return -1; 7553 } else if (was_ap) { 7554 /* Remove additional AP mode functionality */ 7555 nl80211_teardown_ap(bss); 7556 } else { 7557 nl80211_mgmt_unsubscribe(bss, "mode change"); 7558 } 7559 7560 if (!bss->in_deinit && !is_ap_interface(nlmode) && 7561 nl80211_mgmt_subscribe_non_ap(bss) < 0) 7562 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 7563 "frame processing - ignore for now"); 7564 7565 return 0; 7566} 7567 7568 7569static int wpa_driver_nl80211_get_capa(void *priv, 7570 struct wpa_driver_capa *capa) 7571{ 7572 struct i802_bss *bss = priv; 7573 struct wpa_driver_nl80211_data *drv = bss->drv; 7574 if (!drv->has_capability) 7575 return -1; 7576 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7577 return 0; 7578} 7579 7580 7581static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7582{ 7583 struct i802_bss *bss = priv; 7584 struct wpa_driver_nl80211_data *drv = bss->drv; 7585 7586 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7587 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7588 drv->operstate = state; 7589 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7590 state ? IF_OPER_UP : IF_OPER_DORMANT); 7591} 7592 7593 7594static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7595{ 7596 struct i802_bss *bss = priv; 7597 struct wpa_driver_nl80211_data *drv = bss->drv; 7598 struct nl_msg *msg; 7599 struct nl80211_sta_flag_update upd; 7600 7601 msg = nlmsg_alloc(); 7602 if (!msg) 7603 return -ENOMEM; 7604 7605 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7606 7607 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7608 if_nametoindex(bss->ifname)); 7609 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7610 7611 os_memset(&upd, 0, sizeof(upd)); 7612 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7613 if (authorized) 7614 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7615 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7616 7617 return send_and_recv_msgs(drv, msg, NULL, NULL); 7618 nla_put_failure: 7619 nlmsg_free(msg); 7620 return -ENOBUFS; 7621} 7622 7623 7624/* Set kernel driver on given frequency (MHz) */ 7625static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7626{ 7627 struct i802_bss *bss = priv; 7628 return wpa_driver_nl80211_set_freq(bss, freq); 7629} 7630 7631 7632#if defined(HOSTAPD) || defined(CONFIG_AP) 7633 7634static inline int min_int(int a, int b) 7635{ 7636 if (a < b) 7637 return a; 7638 return b; 7639} 7640 7641 7642static int get_key_handler(struct nl_msg *msg, void *arg) 7643{ 7644 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7645 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7646 7647 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7648 genlmsg_attrlen(gnlh, 0), NULL); 7649 7650 /* 7651 * TODO: validate the key index and mac address! 7652 * Otherwise, there's a race condition as soon as 7653 * the kernel starts sending key notifications. 7654 */ 7655 7656 if (tb[NL80211_ATTR_KEY_SEQ]) 7657 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7658 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7659 return NL_SKIP; 7660} 7661 7662 7663static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7664 int idx, u8 *seq) 7665{ 7666 struct i802_bss *bss = priv; 7667 struct wpa_driver_nl80211_data *drv = bss->drv; 7668 struct nl_msg *msg; 7669 7670 msg = nlmsg_alloc(); 7671 if (!msg) 7672 return -ENOMEM; 7673 7674 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7675 7676 if (addr) 7677 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7678 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7679 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7680 7681 memset(seq, 0, 6); 7682 7683 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7684 nla_put_failure: 7685 nlmsg_free(msg); 7686 return -ENOBUFS; 7687} 7688 7689 7690static int i802_set_rts(void *priv, int rts) 7691{ 7692 struct i802_bss *bss = priv; 7693 struct wpa_driver_nl80211_data *drv = bss->drv; 7694 struct nl_msg *msg; 7695 int ret = -ENOBUFS; 7696 u32 val; 7697 7698 msg = nlmsg_alloc(); 7699 if (!msg) 7700 return -ENOMEM; 7701 7702 if (rts >= 2347) 7703 val = (u32) -1; 7704 else 7705 val = rts; 7706 7707 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7708 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7709 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7710 7711 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7712 msg = NULL; 7713 if (!ret) 7714 return 0; 7715nla_put_failure: 7716 nlmsg_free(msg); 7717 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7718 "%d (%s)", rts, ret, strerror(-ret)); 7719 return ret; 7720} 7721 7722 7723static int i802_set_frag(void *priv, int frag) 7724{ 7725 struct i802_bss *bss = priv; 7726 struct wpa_driver_nl80211_data *drv = bss->drv; 7727 struct nl_msg *msg; 7728 int ret = -ENOBUFS; 7729 u32 val; 7730 7731 msg = nlmsg_alloc(); 7732 if (!msg) 7733 return -ENOMEM; 7734 7735 if (frag >= 2346) 7736 val = (u32) -1; 7737 else 7738 val = frag; 7739 7740 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7741 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7742 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7743 7744 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7745 msg = NULL; 7746 if (!ret) 7747 return 0; 7748nla_put_failure: 7749 nlmsg_free(msg); 7750 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7751 "%d: %d (%s)", frag, ret, strerror(-ret)); 7752 return ret; 7753} 7754 7755 7756static int i802_flush(void *priv) 7757{ 7758 struct i802_bss *bss = priv; 7759 struct wpa_driver_nl80211_data *drv = bss->drv; 7760 struct nl_msg *msg; 7761 int res; 7762 7763 msg = nlmsg_alloc(); 7764 if (!msg) 7765 return -1; 7766 7767 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7768 7769 /* 7770 * XXX: FIX! this needs to flush all VLANs too 7771 */ 7772 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7773 if_nametoindex(bss->ifname)); 7774 7775 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7776 if (res) { 7777 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7778 "(%s)", res, strerror(-res)); 7779 } 7780 return res; 7781 nla_put_failure: 7782 nlmsg_free(msg); 7783 return -ENOBUFS; 7784} 7785 7786#endif /* HOSTAPD || CONFIG_AP */ 7787 7788 7789static int get_sta_handler(struct nl_msg *msg, void *arg) 7790{ 7791 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7792 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7793 struct hostap_sta_driver_data *data = arg; 7794 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7795 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7796 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7797 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7798 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7799 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7800 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7801 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 7802 }; 7803 7804 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7805 genlmsg_attrlen(gnlh, 0), NULL); 7806 7807 /* 7808 * TODO: validate the interface and mac address! 7809 * Otherwise, there's a race condition as soon as 7810 * the kernel starts sending station notifications. 7811 */ 7812 7813 if (!tb[NL80211_ATTR_STA_INFO]) { 7814 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7815 return NL_SKIP; 7816 } 7817 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7818 tb[NL80211_ATTR_STA_INFO], 7819 stats_policy)) { 7820 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7821 return NL_SKIP; 7822 } 7823 7824 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7825 data->inactive_msec = 7826 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7827 if (stats[NL80211_STA_INFO_RX_BYTES]) 7828 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7829 if (stats[NL80211_STA_INFO_TX_BYTES]) 7830 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7831 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7832 data->rx_packets = 7833 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7834 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7835 data->tx_packets = 7836 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7837 if (stats[NL80211_STA_INFO_TX_FAILED]) 7838 data->tx_retry_failed = 7839 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 7840 7841 return NL_SKIP; 7842} 7843 7844static int i802_read_sta_data(struct i802_bss *bss, 7845 struct hostap_sta_driver_data *data, 7846 const u8 *addr) 7847{ 7848 struct wpa_driver_nl80211_data *drv = bss->drv; 7849 struct nl_msg *msg; 7850 7851 os_memset(data, 0, sizeof(*data)); 7852 msg = nlmsg_alloc(); 7853 if (!msg) 7854 return -ENOMEM; 7855 7856 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7857 7858 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7859 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7860 7861 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7862 nla_put_failure: 7863 nlmsg_free(msg); 7864 return -ENOBUFS; 7865} 7866 7867 7868#if defined(HOSTAPD) || defined(CONFIG_AP) 7869 7870static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7871 int cw_min, int cw_max, int burst_time) 7872{ 7873 struct i802_bss *bss = priv; 7874 struct wpa_driver_nl80211_data *drv = bss->drv; 7875 struct nl_msg *msg; 7876 struct nlattr *txq, *params; 7877 7878 msg = nlmsg_alloc(); 7879 if (!msg) 7880 return -1; 7881 7882 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7883 7884 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7885 7886 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7887 if (!txq) 7888 goto nla_put_failure; 7889 7890 /* We are only sending parameters for a single TXQ at a time */ 7891 params = nla_nest_start(msg, 1); 7892 if (!params) 7893 goto nla_put_failure; 7894 7895 switch (queue) { 7896 case 0: 7897 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7898 break; 7899 case 1: 7900 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7901 break; 7902 case 2: 7903 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7904 break; 7905 case 3: 7906 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7907 break; 7908 } 7909 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 7910 * 32 usec, so need to convert the value here. */ 7911 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 7912 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 7913 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 7914 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 7915 7916 nla_nest_end(msg, params); 7917 7918 nla_nest_end(msg, txq); 7919 7920 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 7921 return 0; 7922 msg = NULL; 7923 nla_put_failure: 7924 nlmsg_free(msg); 7925 return -1; 7926} 7927 7928 7929static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr, 7930 const char *ifname, int vlan_id) 7931{ 7932 struct wpa_driver_nl80211_data *drv = bss->drv; 7933 struct nl_msg *msg; 7934 int ret = -ENOBUFS; 7935 7936 msg = nlmsg_alloc(); 7937 if (!msg) 7938 return -ENOMEM; 7939 7940 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7941 7942 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7943 if_nametoindex(bss->ifname)); 7944 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7945 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 7946 if_nametoindex(ifname)); 7947 7948 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7949 msg = NULL; 7950 if (ret < 0) { 7951 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 7952 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 7953 MAC2STR(addr), ifname, vlan_id, ret, 7954 strerror(-ret)); 7955 } 7956 nla_put_failure: 7957 nlmsg_free(msg); 7958 return ret; 7959} 7960 7961 7962static int i802_get_inact_sec(void *priv, const u8 *addr) 7963{ 7964 struct hostap_sta_driver_data data; 7965 int ret; 7966 7967 data.inactive_msec = (unsigned long) -1; 7968 ret = i802_read_sta_data(priv, &data, addr); 7969 if (ret || data.inactive_msec == (unsigned long) -1) 7970 return -1; 7971 return data.inactive_msec / 1000; 7972} 7973 7974 7975static int i802_sta_clear_stats(void *priv, const u8 *addr) 7976{ 7977#if 0 7978 /* TODO */ 7979#endif 7980 return 0; 7981} 7982 7983 7984static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 7985 int reason) 7986{ 7987 struct i802_bss *bss = priv; 7988 struct wpa_driver_nl80211_data *drv = bss->drv; 7989 struct ieee80211_mgmt mgmt; 7990 7991 if (drv->device_ap_sme) 7992 return wpa_driver_nl80211_sta_remove(bss, addr); 7993 7994 memset(&mgmt, 0, sizeof(mgmt)); 7995 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7996 WLAN_FC_STYPE_DEAUTH); 7997 memcpy(mgmt.da, addr, ETH_ALEN); 7998 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7999 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8000 mgmt.u.deauth.reason_code = host_to_le16(reason); 8001 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8002 IEEE80211_HDRLEN + 8003 sizeof(mgmt.u.deauth), 0, 0, 0, 0, 8004 0); 8005} 8006 8007 8008static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 8009 int reason) 8010{ 8011 struct i802_bss *bss = priv; 8012 struct wpa_driver_nl80211_data *drv = bss->drv; 8013 struct ieee80211_mgmt mgmt; 8014 8015 if (drv->device_ap_sme) 8016 return wpa_driver_nl80211_sta_remove(bss, addr); 8017 8018 memset(&mgmt, 0, sizeof(mgmt)); 8019 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8020 WLAN_FC_STYPE_DISASSOC); 8021 memcpy(mgmt.da, addr, ETH_ALEN); 8022 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8023 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8024 mgmt.u.disassoc.reason_code = host_to_le16(reason); 8025 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8026 IEEE80211_HDRLEN + 8027 sizeof(mgmt.u.disassoc), 0, 0, 0, 0, 8028 0); 8029} 8030 8031#endif /* HOSTAPD || CONFIG_AP */ 8032 8033#ifdef HOSTAPD 8034 8035static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8036{ 8037 int i; 8038 int *old; 8039 8040 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 8041 ifidx); 8042 for (i = 0; i < drv->num_if_indices; i++) { 8043 if (drv->if_indices[i] == 0) { 8044 drv->if_indices[i] = ifidx; 8045 return; 8046 } 8047 } 8048 8049 if (drv->if_indices != drv->default_if_indices) 8050 old = drv->if_indices; 8051 else 8052 old = NULL; 8053 8054 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 8055 sizeof(int)); 8056 if (!drv->if_indices) { 8057 if (!old) 8058 drv->if_indices = drv->default_if_indices; 8059 else 8060 drv->if_indices = old; 8061 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 8062 "interfaces"); 8063 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 8064 return; 8065 } else if (!old) 8066 os_memcpy(drv->if_indices, drv->default_if_indices, 8067 sizeof(drv->default_if_indices)); 8068 drv->if_indices[drv->num_if_indices] = ifidx; 8069 drv->num_if_indices++; 8070} 8071 8072 8073static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8074{ 8075 int i; 8076 8077 for (i = 0; i < drv->num_if_indices; i++) { 8078 if (drv->if_indices[i] == ifidx) { 8079 drv->if_indices[i] = 0; 8080 break; 8081 } 8082 } 8083} 8084 8085 8086static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8087{ 8088 int i; 8089 8090 for (i = 0; i < drv->num_if_indices; i++) 8091 if (drv->if_indices[i] == ifidx) 8092 return 1; 8093 8094 return 0; 8095} 8096 8097 8098static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 8099 const char *bridge_ifname) 8100{ 8101 struct i802_bss *bss = priv; 8102 struct wpa_driver_nl80211_data *drv = bss->drv; 8103 char name[IFNAMSIZ + 1]; 8104 8105 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 8106 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 8107 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 8108 if (val) { 8109 if (!if_nametoindex(name)) { 8110 if (nl80211_create_iface(drv, name, 8111 NL80211_IFTYPE_AP_VLAN, 8112 bss->addr, 1) < 0) 8113 return -1; 8114 if (bridge_ifname && 8115 linux_br_add_if(drv->global->ioctl_sock, 8116 bridge_ifname, name) < 0) 8117 return -1; 8118 } 8119 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 8120 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 8121 "interface %s up", name); 8122 } 8123 return i802_set_sta_vlan(priv, addr, name, 0); 8124 } else { 8125 if (bridge_ifname) 8126 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 8127 name); 8128 8129 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 8130 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 8131 name); 8132 } 8133} 8134 8135 8136static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 8137{ 8138 struct wpa_driver_nl80211_data *drv = eloop_ctx; 8139 struct sockaddr_ll lladdr; 8140 unsigned char buf[3000]; 8141 int len; 8142 socklen_t fromlen = sizeof(lladdr); 8143 8144 len = recvfrom(sock, buf, sizeof(buf), 0, 8145 (struct sockaddr *)&lladdr, &fromlen); 8146 if (len < 0) { 8147 perror("recv"); 8148 return; 8149 } 8150 8151 if (have_ifidx(drv, lladdr.sll_ifindex)) 8152 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 8153} 8154 8155 8156static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 8157 struct i802_bss *bss, 8158 const char *brname, const char *ifname) 8159{ 8160 int ifindex; 8161 char in_br[IFNAMSIZ]; 8162 8163 os_strlcpy(bss->brname, brname, IFNAMSIZ); 8164 ifindex = if_nametoindex(brname); 8165 if (ifindex == 0) { 8166 /* 8167 * Bridge was configured, but the bridge device does 8168 * not exist. Try to add it now. 8169 */ 8170 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 8171 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 8172 "bridge interface %s: %s", 8173 brname, strerror(errno)); 8174 return -1; 8175 } 8176 bss->added_bridge = 1; 8177 add_ifidx(drv, if_nametoindex(brname)); 8178 } 8179 8180 if (linux_br_get(in_br, ifname) == 0) { 8181 if (os_strcmp(in_br, brname) == 0) 8182 return 0; /* already in the bridge */ 8183 8184 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 8185 "bridge %s", ifname, in_br); 8186 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 8187 0) { 8188 wpa_printf(MSG_ERROR, "nl80211: Failed to " 8189 "remove interface %s from bridge " 8190 "%s: %s", 8191 ifname, brname, strerror(errno)); 8192 return -1; 8193 } 8194 } 8195 8196 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 8197 ifname, brname); 8198 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 8199 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 8200 "into bridge %s: %s", 8201 ifname, brname, strerror(errno)); 8202 return -1; 8203 } 8204 bss->added_if_into_bridge = 1; 8205 8206 return 0; 8207} 8208 8209 8210static void *i802_init(struct hostapd_data *hapd, 8211 struct wpa_init_params *params) 8212{ 8213 struct wpa_driver_nl80211_data *drv; 8214 struct i802_bss *bss; 8215 size_t i; 8216 char brname[IFNAMSIZ]; 8217 int ifindex, br_ifindex; 8218 int br_added = 0; 8219 8220 bss = wpa_driver_nl80211_init(hapd, params->ifname, 8221 params->global_priv); 8222 if (bss == NULL) 8223 return NULL; 8224 8225 drv = bss->drv; 8226 drv->nlmode = NL80211_IFTYPE_AP; 8227 drv->eapol_sock = -1; 8228 8229 if (linux_br_get(brname, params->ifname) == 0) { 8230 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 8231 params->ifname, brname); 8232 br_ifindex = if_nametoindex(brname); 8233 } else { 8234 brname[0] = '\0'; 8235 br_ifindex = 0; 8236 } 8237 8238 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 8239 drv->if_indices = drv->default_if_indices; 8240 for (i = 0; i < params->num_bridge; i++) { 8241 if (params->bridge[i]) { 8242 ifindex = if_nametoindex(params->bridge[i]); 8243 if (ifindex) 8244 add_ifidx(drv, ifindex); 8245 if (ifindex == br_ifindex) 8246 br_added = 1; 8247 } 8248 } 8249 if (!br_added && br_ifindex && 8250 (params->num_bridge == 0 || !params->bridge[0])) 8251 add_ifidx(drv, br_ifindex); 8252 8253 /* start listening for EAPOL on the default AP interface */ 8254 add_ifidx(drv, drv->ifindex); 8255 8256 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 8257 goto failed; 8258 8259 if (params->bssid) { 8260 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8261 params->bssid)) 8262 goto failed; 8263 } 8264 8265 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 8266 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 8267 "into AP mode", bss->ifname); 8268 goto failed; 8269 } 8270 8271 if (params->num_bridge && params->bridge[0] && 8272 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 8273 goto failed; 8274 8275 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 8276 goto failed; 8277 8278 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 8279 if (drv->eapol_sock < 0) { 8280 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 8281 goto failed; 8282 } 8283 8284 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 8285 { 8286 printf("Could not register read socket for eapol\n"); 8287 goto failed; 8288 } 8289 8290 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8291 params->own_addr)) 8292 goto failed; 8293 8294 memcpy(bss->addr, params->own_addr, ETH_ALEN); 8295 8296 return bss; 8297 8298failed: 8299 wpa_driver_nl80211_deinit(bss); 8300 return NULL; 8301} 8302 8303 8304static void i802_deinit(void *priv) 8305{ 8306 struct i802_bss *bss = priv; 8307 wpa_driver_nl80211_deinit(bss); 8308} 8309 8310#endif /* HOSTAPD */ 8311 8312 8313static enum nl80211_iftype wpa_driver_nl80211_if_type( 8314 enum wpa_driver_if_type type) 8315{ 8316 switch (type) { 8317 case WPA_IF_STATION: 8318 return NL80211_IFTYPE_STATION; 8319 case WPA_IF_P2P_CLIENT: 8320 case WPA_IF_P2P_GROUP: 8321 return NL80211_IFTYPE_P2P_CLIENT; 8322 case WPA_IF_AP_VLAN: 8323 return NL80211_IFTYPE_AP_VLAN; 8324 case WPA_IF_AP_BSS: 8325 return NL80211_IFTYPE_AP; 8326 case WPA_IF_P2P_GO: 8327 return NL80211_IFTYPE_P2P_GO; 8328 } 8329 return -1; 8330} 8331 8332 8333#ifdef CONFIG_P2P 8334 8335static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 8336{ 8337 struct wpa_driver_nl80211_data *drv; 8338 dl_list_for_each(drv, &global->interfaces, 8339 struct wpa_driver_nl80211_data, list) { 8340 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 8341 return 1; 8342 } 8343 return 0; 8344} 8345 8346 8347static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 8348 u8 *new_addr) 8349{ 8350 unsigned int idx; 8351 8352 if (!drv->global) 8353 return -1; 8354 8355 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 8356 for (idx = 0; idx < 64; idx++) { 8357 new_addr[0] = drv->first_bss.addr[0] | 0x02; 8358 new_addr[0] ^= idx << 2; 8359 if (!nl80211_addr_in_use(drv->global, new_addr)) 8360 break; 8361 } 8362 if (idx == 64) 8363 return -1; 8364 8365 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 8366 MACSTR, MAC2STR(new_addr)); 8367 8368 return 0; 8369} 8370 8371#endif /* CONFIG_P2P */ 8372 8373 8374static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 8375 const char *ifname, const u8 *addr, 8376 void *bss_ctx, void **drv_priv, 8377 char *force_ifname, u8 *if_addr, 8378 const char *bridge) 8379{ 8380 struct i802_bss *bss = priv; 8381 struct wpa_driver_nl80211_data *drv = bss->drv; 8382 int ifidx; 8383#ifdef HOSTAPD 8384 struct i802_bss *new_bss = NULL; 8385 8386 if (type == WPA_IF_AP_BSS) { 8387 new_bss = os_zalloc(sizeof(*new_bss)); 8388 if (new_bss == NULL) 8389 return -1; 8390 } 8391#endif /* HOSTAPD */ 8392 8393 if (addr) 8394 os_memcpy(if_addr, addr, ETH_ALEN); 8395 ifidx = nl80211_create_iface(drv, ifname, 8396 wpa_driver_nl80211_if_type(type), addr, 8397 0); 8398 if (ifidx < 0) { 8399#ifdef HOSTAPD 8400 os_free(new_bss); 8401#endif /* HOSTAPD */ 8402 return -1; 8403 } 8404 8405 if (!addr && 8406 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8407 if_addr) < 0) { 8408 nl80211_remove_iface(drv, ifidx); 8409 return -1; 8410 } 8411 8412#ifdef CONFIG_P2P 8413 if (!addr && 8414 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 8415 type == WPA_IF_P2P_GO)) { 8416 /* Enforce unique P2P Interface Address */ 8417 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 8418 8419 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 8420 own_addr) < 0 || 8421 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 8422 new_addr) < 0) { 8423 nl80211_remove_iface(drv, ifidx); 8424 return -1; 8425 } 8426 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 8427 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 8428 "for P2P group interface"); 8429 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 8430 nl80211_remove_iface(drv, ifidx); 8431 return -1; 8432 } 8433 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 8434 new_addr) < 0) { 8435 nl80211_remove_iface(drv, ifidx); 8436 return -1; 8437 } 8438 } 8439 os_memcpy(if_addr, new_addr, ETH_ALEN); 8440 } 8441#endif /* CONFIG_P2P */ 8442 8443#ifdef HOSTAPD 8444 if (bridge && 8445 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 8446 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 8447 "interface %s to a bridge %s", ifname, bridge); 8448 nl80211_remove_iface(drv, ifidx); 8449 os_free(new_bss); 8450 return -1; 8451 } 8452 8453 if (type == WPA_IF_AP_BSS) { 8454 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 8455 { 8456 nl80211_remove_iface(drv, ifidx); 8457 os_free(new_bss); 8458 return -1; 8459 } 8460 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 8461 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 8462 new_bss->ifindex = ifidx; 8463 new_bss->drv = drv; 8464 new_bss->next = drv->first_bss.next; 8465 new_bss->freq = drv->first_bss.freq; 8466 new_bss->ctx = bss_ctx; 8467 drv->first_bss.next = new_bss; 8468 if (drv_priv) 8469 *drv_priv = new_bss; 8470 nl80211_init_bss(new_bss); 8471 8472 /* Subscribe management frames for this WPA_IF_AP_BSS */ 8473 if (nl80211_setup_ap(new_bss)) 8474 return -1; 8475 } 8476#endif /* HOSTAPD */ 8477 8478 if (drv->global) 8479 drv->global->if_add_ifindex = ifidx; 8480 8481 return 0; 8482} 8483 8484 8485static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 8486 enum wpa_driver_if_type type, 8487 const char *ifname) 8488{ 8489 struct wpa_driver_nl80211_data *drv = bss->drv; 8490 int ifindex = if_nametoindex(ifname); 8491 8492 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 8493 __func__, type, ifname, ifindex); 8494 if (ifindex <= 0) 8495 return -1; 8496 8497 nl80211_remove_iface(drv, ifindex); 8498 8499#ifdef HOSTAPD 8500 if (type != WPA_IF_AP_BSS) 8501 return 0; 8502 8503 if (bss->added_if_into_bridge) { 8504 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 8505 bss->ifname) < 0) 8506 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8507 "interface %s from bridge %s: %s", 8508 bss->ifname, bss->brname, strerror(errno)); 8509 } 8510 if (bss->added_bridge) { 8511 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 8512 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 8513 "bridge %s: %s", 8514 bss->brname, strerror(errno)); 8515 } 8516 8517 if (bss != &drv->first_bss) { 8518 struct i802_bss *tbss; 8519 8520 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 8521 if (tbss->next == bss) { 8522 tbss->next = bss->next; 8523 /* Unsubscribe management frames */ 8524 nl80211_teardown_ap(bss); 8525 nl80211_destroy_bss(bss); 8526 os_free(bss); 8527 bss = NULL; 8528 break; 8529 } 8530 } 8531 if (bss) 8532 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 8533 "BSS %p in the list", __func__, bss); 8534 } 8535#endif /* HOSTAPD */ 8536 8537 return 0; 8538} 8539 8540 8541static int cookie_handler(struct nl_msg *msg, void *arg) 8542{ 8543 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8544 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8545 u64 *cookie = arg; 8546 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8547 genlmsg_attrlen(gnlh, 0), NULL); 8548 if (tb[NL80211_ATTR_COOKIE]) 8549 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 8550 return NL_SKIP; 8551} 8552 8553 8554static int nl80211_send_frame_cmd(struct i802_bss *bss, 8555 unsigned int freq, unsigned int wait, 8556 const u8 *buf, size_t buf_len, 8557 u64 *cookie_out, int no_cck, int no_ack, 8558 int offchanok) 8559{ 8560 struct wpa_driver_nl80211_data *drv = bss->drv; 8561 struct nl_msg *msg; 8562 u64 cookie; 8563 int ret = -1; 8564 8565 msg = nlmsg_alloc(); 8566 if (!msg) 8567 return -1; 8568 8569 wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 8570 "no_ack=%d offchanok=%d", 8571 freq, wait, no_cck, no_ack, offchanok); 8572 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 8573 8574 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8575 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8576 if (wait) 8577 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 8578 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 8579 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 8580 if (no_cck) 8581 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 8582 if (no_ack) 8583 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 8584 8585 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 8586 8587 cookie = 0; 8588 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8589 msg = NULL; 8590 if (ret) { 8591 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 8592 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 8593 freq, wait); 8594 goto nla_put_failure; 8595 } 8596 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; " 8597 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 8598 (long long unsigned int) cookie); 8599 8600 if (cookie_out) 8601 *cookie_out = no_ack ? (u64) -1 : cookie; 8602 8603nla_put_failure: 8604 nlmsg_free(msg); 8605 return ret; 8606} 8607 8608 8609static int wpa_driver_nl80211_send_action(struct i802_bss *bss, 8610 unsigned int freq, 8611 unsigned int wait_time, 8612 const u8 *dst, const u8 *src, 8613 const u8 *bssid, 8614 const u8 *data, size_t data_len, 8615 int no_cck) 8616{ 8617 struct wpa_driver_nl80211_data *drv = bss->drv; 8618 int ret = -1; 8619 u8 *buf; 8620 struct ieee80211_hdr *hdr; 8621 8622 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8623 "freq=%u MHz wait=%d ms no_cck=%d)", 8624 drv->ifindex, freq, wait_time, no_cck); 8625 8626 buf = os_zalloc(24 + data_len); 8627 if (buf == NULL) 8628 return ret; 8629 os_memcpy(buf + 24, data, data_len); 8630 hdr = (struct ieee80211_hdr *) buf; 8631 hdr->frame_control = 8632 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8633 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8634 os_memcpy(hdr->addr2, src, ETH_ALEN); 8635 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8636 8637 if (is_ap_interface(drv->nlmode)) 8638 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len, 8639 0, freq, no_cck, 1, 8640 wait_time); 8641 else 8642 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8643 24 + data_len, 8644 &drv->send_action_cookie, 8645 no_cck, 0, 1); 8646 8647 os_free(buf); 8648 return ret; 8649} 8650 8651 8652static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8653{ 8654 struct i802_bss *bss = priv; 8655 struct wpa_driver_nl80211_data *drv = bss->drv; 8656 struct nl_msg *msg; 8657 int ret; 8658 8659 msg = nlmsg_alloc(); 8660 if (!msg) 8661 return; 8662 8663 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx", 8664 (long long unsigned int) drv->send_action_cookie); 8665 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8666 8667 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8668 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8669 8670 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8671 msg = NULL; 8672 if (ret) 8673 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8674 "(%s)", ret, strerror(-ret)); 8675 8676 nla_put_failure: 8677 nlmsg_free(msg); 8678} 8679 8680 8681static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8682 unsigned int duration) 8683{ 8684 struct i802_bss *bss = priv; 8685 struct wpa_driver_nl80211_data *drv = bss->drv; 8686 struct nl_msg *msg; 8687 int ret; 8688 u64 cookie; 8689 8690 msg = nlmsg_alloc(); 8691 if (!msg) 8692 return -1; 8693 8694 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8695 8696 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8697 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8698 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8699 8700 cookie = 0; 8701 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8702 msg = NULL; 8703 if (ret == 0) { 8704 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8705 "0x%llx for freq=%u MHz duration=%u", 8706 (long long unsigned int) cookie, freq, duration); 8707 drv->remain_on_chan_cookie = cookie; 8708 drv->pending_remain_on_chan = 1; 8709 return 0; 8710 } 8711 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8712 "(freq=%d duration=%u): %d (%s)", 8713 freq, duration, ret, strerror(-ret)); 8714nla_put_failure: 8715 nlmsg_free(msg); 8716 return -1; 8717} 8718 8719 8720static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8721{ 8722 struct i802_bss *bss = priv; 8723 struct wpa_driver_nl80211_data *drv = bss->drv; 8724 struct nl_msg *msg; 8725 int ret; 8726 8727 if (!drv->pending_remain_on_chan) { 8728 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8729 "to cancel"); 8730 return -1; 8731 } 8732 8733 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8734 "0x%llx", 8735 (long long unsigned int) drv->remain_on_chan_cookie); 8736 8737 msg = nlmsg_alloc(); 8738 if (!msg) 8739 return -1; 8740 8741 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8742 8743 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8744 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8745 8746 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8747 msg = NULL; 8748 if (ret == 0) 8749 return 0; 8750 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8751 "%d (%s)", ret, strerror(-ret)); 8752nla_put_failure: 8753 nlmsg_free(msg); 8754 return -1; 8755} 8756 8757 8758static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report) 8759{ 8760 struct wpa_driver_nl80211_data *drv = bss->drv; 8761 8762 if (!report) { 8763 if (bss->nl_preq && drv->device_ap_sme && 8764 is_ap_interface(drv->nlmode)) { 8765 /* 8766 * Do not disable Probe Request reporting that was 8767 * enabled in nl80211_setup_ap(). 8768 */ 8769 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8770 "Probe Request reporting nl_preq=%p while " 8771 "in AP mode", bss->nl_preq); 8772 } else if (bss->nl_preq) { 8773 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8774 "reporting nl_preq=%p", bss->nl_preq); 8775 eloop_unregister_read_sock( 8776 nl_socket_get_fd(bss->nl_preq)); 8777 nl_destroy_handles(&bss->nl_preq); 8778 } 8779 return 0; 8780 } 8781 8782 if (bss->nl_preq) { 8783 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8784 "already on! nl_preq=%p", bss->nl_preq); 8785 return 0; 8786 } 8787 8788 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8789 if (bss->nl_preq == NULL) 8790 return -1; 8791 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8792 "reporting nl_preq=%p", bss->nl_preq); 8793 8794 if (nl80211_register_frame(bss, bss->nl_preq, 8795 (WLAN_FC_TYPE_MGMT << 2) | 8796 (WLAN_FC_STYPE_PROBE_REQ << 4), 8797 NULL, 0) < 0) 8798 goto out_err; 8799 8800 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8801 wpa_driver_nl80211_event_receive, bss->nl_cb, 8802 bss->nl_preq); 8803 8804 return 0; 8805 8806 out_err: 8807 nl_destroy_handles(&bss->nl_preq); 8808 return -1; 8809} 8810 8811 8812static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8813 int ifindex, int disabled) 8814{ 8815 struct nl_msg *msg; 8816 struct nlattr *bands, *band; 8817 int ret; 8818 8819 msg = nlmsg_alloc(); 8820 if (!msg) 8821 return -1; 8822 8823 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8824 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8825 8826 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8827 if (!bands) 8828 goto nla_put_failure; 8829 8830 /* 8831 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8832 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8833 * rates. All 5 GHz rates are left enabled. 8834 */ 8835 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8836 if (!band) 8837 goto nla_put_failure; 8838 if (disabled) { 8839 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8840 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8841 } 8842 nla_nest_end(msg, band); 8843 8844 nla_nest_end(msg, bands); 8845 8846 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8847 msg = NULL; 8848 if (ret) { 8849 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8850 "(%s)", ret, strerror(-ret)); 8851 } else 8852 drv->disabled_11b_rates = disabled; 8853 8854 return ret; 8855 8856nla_put_failure: 8857 nlmsg_free(msg); 8858 return -1; 8859} 8860 8861 8862static int wpa_driver_nl80211_deinit_ap(void *priv) 8863{ 8864 struct i802_bss *bss = priv; 8865 struct wpa_driver_nl80211_data *drv = bss->drv; 8866 if (!is_ap_interface(drv->nlmode)) 8867 return -1; 8868 wpa_driver_nl80211_del_beacon(drv); 8869 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8870} 8871 8872 8873static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 8874{ 8875 struct i802_bss *bss = priv; 8876 struct wpa_driver_nl80211_data *drv = bss->drv; 8877 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 8878 return -1; 8879 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8880} 8881 8882 8883static void wpa_driver_nl80211_resume(void *priv) 8884{ 8885 struct i802_bss *bss = priv; 8886 struct wpa_driver_nl80211_data *drv = bss->drv; 8887 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8888 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8889 "resume event"); 8890 } 8891} 8892 8893 8894static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8895 const u8 *ies, size_t ies_len) 8896{ 8897 struct i802_bss *bss = priv; 8898 struct wpa_driver_nl80211_data *drv = bss->drv; 8899 int ret; 8900 u8 *data, *pos; 8901 size_t data_len; 8902 const u8 *own_addr = bss->addr; 8903 8904 if (action != 1) { 8905 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8906 "action %d", action); 8907 return -1; 8908 } 8909 8910 /* 8911 * Action frame payload: 8912 * Category[1] = 6 (Fast BSS Transition) 8913 * Action[1] = 1 (Fast BSS Transition Request) 8914 * STA Address 8915 * Target AP Address 8916 * FT IEs 8917 */ 8918 8919 data_len = 2 + 2 * ETH_ALEN + ies_len; 8920 data = os_malloc(data_len); 8921 if (data == NULL) 8922 return -1; 8923 pos = data; 8924 *pos++ = 0x06; /* FT Action category */ 8925 *pos++ = action; 8926 os_memcpy(pos, own_addr, ETH_ALEN); 8927 pos += ETH_ALEN; 8928 os_memcpy(pos, target_ap, ETH_ALEN); 8929 pos += ETH_ALEN; 8930 os_memcpy(pos, ies, ies_len); 8931 8932 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 8933 drv->bssid, own_addr, drv->bssid, 8934 data, data_len, 0); 8935 os_free(data); 8936 8937 return ret; 8938} 8939 8940 8941static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 8942{ 8943 struct i802_bss *bss = priv; 8944 struct wpa_driver_nl80211_data *drv = bss->drv; 8945 struct nl_msg *msg, *cqm = NULL; 8946 int ret = -1; 8947 8948 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 8949 "hysteresis=%d", threshold, hysteresis); 8950 8951 msg = nlmsg_alloc(); 8952 if (!msg) 8953 return -1; 8954 8955 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 8956 8957 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8958 8959 cqm = nlmsg_alloc(); 8960 if (cqm == NULL) 8961 goto nla_put_failure; 8962 8963 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 8964 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 8965 if (nla_put_nested(msg, NL80211_ATTR_CQM, cqm) < 0) 8966 goto nla_put_failure; 8967 8968 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8969 msg = NULL; 8970 8971nla_put_failure: 8972 nlmsg_free(cqm); 8973 nlmsg_free(msg); 8974 return ret; 8975} 8976 8977 8978static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 8979{ 8980 struct i802_bss *bss = priv; 8981 struct wpa_driver_nl80211_data *drv = bss->drv; 8982 int res; 8983 8984 os_memset(si, 0, sizeof(*si)); 8985 res = nl80211_get_link_signal(drv, si); 8986 if (res != 0) 8987 return res; 8988 8989 return nl80211_get_link_noise(drv, si); 8990} 8991 8992 8993static int wpa_driver_nl80211_shared_freq(void *priv) 8994{ 8995 struct i802_bss *bss = priv; 8996 struct wpa_driver_nl80211_data *drv = bss->drv; 8997 struct wpa_driver_nl80211_data *driver; 8998 int freq = 0; 8999 9000 /* 9001 * If the same PHY is in connected state with some other interface, 9002 * then retrieve the assoc freq. 9003 */ 9004 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 9005 drv->phyname); 9006 9007 dl_list_for_each(driver, &drv->global->interfaces, 9008 struct wpa_driver_nl80211_data, list) { 9009 if (drv == driver || 9010 os_strcmp(drv->phyname, driver->phyname) != 0 || 9011#ifdef ANDROID_P2P 9012 (!driver->associated && !is_ap_interface(driver->nlmode))) 9013#else 9014 !driver->associated) 9015#endif 9016 continue; 9017 9018 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 9019 MACSTR, 9020 driver->phyname, driver->first_bss.ifname, 9021 MAC2STR(driver->first_bss.addr)); 9022 if (is_ap_interface(driver->nlmode)) 9023 freq = driver->first_bss.freq; 9024 else 9025 freq = nl80211_get_assoc_freq(driver); 9026 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 9027 drv->phyname, freq); 9028 } 9029 9030 if (!freq) 9031 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 9032 "PHY (%s) in associated state", drv->phyname); 9033 9034 return freq; 9035} 9036 9037 9038static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 9039 int encrypt) 9040{ 9041 struct i802_bss *bss = priv; 9042 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 9043 0, 0, 0, 0); 9044} 9045 9046 9047static int nl80211_set_param(void *priv, const char *param) 9048{ 9049 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 9050 if (param == NULL) 9051 return 0; 9052 9053#ifdef CONFIG_P2P 9054 if (os_strstr(param, "use_p2p_group_interface=1")) { 9055 struct i802_bss *bss = priv; 9056 struct wpa_driver_nl80211_data *drv = bss->drv; 9057 9058 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 9059 "interface"); 9060 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 9061 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 9062 } 9063#ifdef ANDROID_P2P 9064 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 9065 struct i802_bss *bss = priv; 9066 struct wpa_driver_nl80211_data *drv = bss->drv; 9067 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 9068 "concurrency"); 9069 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 9070 } 9071#endif 9072#endif /* CONFIG_P2P */ 9073 9074 return 0; 9075} 9076 9077 9078static void * nl80211_global_init(void) 9079{ 9080 struct nl80211_global *global; 9081 struct netlink_config *cfg; 9082 9083 global = os_zalloc(sizeof(*global)); 9084 if (global == NULL) 9085 return NULL; 9086 global->ioctl_sock = -1; 9087 dl_list_init(&global->interfaces); 9088 global->if_add_ifindex = -1; 9089 9090 cfg = os_zalloc(sizeof(*cfg)); 9091 if (cfg == NULL) 9092 goto err; 9093 9094 cfg->ctx = global; 9095 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 9096 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 9097 global->netlink = netlink_init(cfg); 9098 if (global->netlink == NULL) { 9099 os_free(cfg); 9100 goto err; 9101 } 9102 9103 if (wpa_driver_nl80211_init_nl_global(global) < 0) 9104 goto err; 9105 9106 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 9107 if (global->ioctl_sock < 0) { 9108 perror("socket(PF_INET,SOCK_DGRAM)"); 9109 goto err; 9110 } 9111 9112 return global; 9113 9114err: 9115 nl80211_global_deinit(global); 9116 return NULL; 9117} 9118 9119 9120static void nl80211_global_deinit(void *priv) 9121{ 9122 struct nl80211_global *global = priv; 9123 if (global == NULL) 9124 return; 9125 if (!dl_list_empty(&global->interfaces)) { 9126 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 9127 "nl80211_global_deinit", 9128 dl_list_len(&global->interfaces)); 9129 } 9130 9131 if (global->netlink) 9132 netlink_deinit(global->netlink); 9133 9134 nl_destroy_handles(&global->nl); 9135 9136 if (global->nl_event) { 9137 eloop_unregister_read_sock( 9138 nl_socket_get_fd(global->nl_event)); 9139 nl_destroy_handles(&global->nl_event); 9140 } 9141 9142 nl_cb_put(global->nl_cb); 9143 9144 if (global->ioctl_sock >= 0) 9145 close(global->ioctl_sock); 9146 9147 os_free(global); 9148} 9149 9150 9151static const char * nl80211_get_radio_name(void *priv) 9152{ 9153 struct i802_bss *bss = priv; 9154 struct wpa_driver_nl80211_data *drv = bss->drv; 9155 return drv->phyname; 9156} 9157 9158 9159static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 9160 const u8 *pmkid) 9161{ 9162 struct nl_msg *msg; 9163 9164 msg = nlmsg_alloc(); 9165 if (!msg) 9166 return -ENOMEM; 9167 9168 nl80211_cmd(bss->drv, msg, 0, cmd); 9169 9170 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 9171 if (pmkid) 9172 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 9173 if (bssid) 9174 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 9175 9176 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9177 nla_put_failure: 9178 nlmsg_free(msg); 9179 return -ENOBUFS; 9180} 9181 9182 9183static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9184{ 9185 struct i802_bss *bss = priv; 9186 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 9187 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 9188} 9189 9190 9191static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 9192{ 9193 struct i802_bss *bss = priv; 9194 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 9195 MAC2STR(bssid)); 9196 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 9197} 9198 9199 9200static int nl80211_flush_pmkid(void *priv) 9201{ 9202 struct i802_bss *bss = priv; 9203 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 9204 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 9205} 9206 9207 9208static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 9209 const u8 *replay_ctr) 9210{ 9211 struct i802_bss *bss = priv; 9212 struct wpa_driver_nl80211_data *drv = bss->drv; 9213 struct nlattr *replay_nested; 9214 struct nl_msg *msg; 9215 9216 msg = nlmsg_alloc(); 9217 if (!msg) 9218 return; 9219 9220 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 9221 9222 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9223 9224 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 9225 if (!replay_nested) 9226 goto nla_put_failure; 9227 9228 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 9229 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 9230 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 9231 replay_ctr); 9232 9233 nla_nest_end(msg, replay_nested); 9234 9235 send_and_recv_msgs(drv, msg, NULL, NULL); 9236 return; 9237 nla_put_failure: 9238 nlmsg_free(msg); 9239} 9240 9241 9242static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 9243 const u8 *addr, int qos) 9244{ 9245 /* send data frame to poll STA and check whether 9246 * this frame is ACKed */ 9247 struct { 9248 struct ieee80211_hdr hdr; 9249 u16 qos_ctl; 9250 } STRUCT_PACKED nulldata; 9251 size_t size; 9252 9253 /* Send data frame to poll STA and check whether this frame is ACKed */ 9254 9255 os_memset(&nulldata, 0, sizeof(nulldata)); 9256 9257 if (qos) { 9258 nulldata.hdr.frame_control = 9259 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9260 WLAN_FC_STYPE_QOS_NULL); 9261 size = sizeof(nulldata); 9262 } else { 9263 nulldata.hdr.frame_control = 9264 IEEE80211_FC(WLAN_FC_TYPE_DATA, 9265 WLAN_FC_STYPE_NULLFUNC); 9266 size = sizeof(struct ieee80211_hdr); 9267 } 9268 9269 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 9270 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 9271 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 9272 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 9273 9274 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0, 9275 0, 0) < 0) 9276 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 9277 "send poll frame"); 9278} 9279 9280static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 9281 int qos) 9282{ 9283 struct i802_bss *bss = priv; 9284 struct wpa_driver_nl80211_data *drv = bss->drv; 9285 struct nl_msg *msg; 9286 9287 if (!drv->poll_command_supported) { 9288 nl80211_send_null_frame(bss, own_addr, addr, qos); 9289 return; 9290 } 9291 9292 msg = nlmsg_alloc(); 9293 if (!msg) 9294 return; 9295 9296 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 9297 9298 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9299 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 9300 9301 send_and_recv_msgs(drv, msg, NULL, NULL); 9302 return; 9303 nla_put_failure: 9304 nlmsg_free(msg); 9305} 9306 9307 9308static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 9309{ 9310 struct nl_msg *msg; 9311 9312 msg = nlmsg_alloc(); 9313 if (!msg) 9314 return -ENOMEM; 9315 9316 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 9317 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 9318 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 9319 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 9320 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 9321nla_put_failure: 9322 nlmsg_free(msg); 9323 return -ENOBUFS; 9324} 9325 9326 9327static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 9328 int ctwindow) 9329{ 9330 struct i802_bss *bss = priv; 9331 9332 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 9333 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 9334 9335 if (opp_ps != -1 || ctwindow != -1) 9336#ifdef ANDROID_P2P 9337 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 9338#else 9339 return -1; /* Not yet supported */ 9340#endif 9341 9342 if (legacy_ps == -1) 9343 return 0; 9344 if (legacy_ps != 0 && legacy_ps != 1) 9345 return -1; /* Not yet supported */ 9346 9347 return nl80211_set_power_save(bss, legacy_ps); 9348} 9349 9350 9351#ifdef CONFIG_TDLS 9352 9353static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 9354 u8 dialog_token, u16 status_code, 9355 const u8 *buf, size_t len) 9356{ 9357 struct i802_bss *bss = priv; 9358 struct wpa_driver_nl80211_data *drv = bss->drv; 9359 struct nl_msg *msg; 9360 9361 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9362 return -EOPNOTSUPP; 9363 9364 if (!dst) 9365 return -EINVAL; 9366 9367 msg = nlmsg_alloc(); 9368 if (!msg) 9369 return -ENOMEM; 9370 9371 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 9372 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9373 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 9374 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 9375 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 9376 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 9377 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 9378 9379 return send_and_recv_msgs(drv, msg, NULL, NULL); 9380 9381nla_put_failure: 9382 nlmsg_free(msg); 9383 return -ENOBUFS; 9384} 9385 9386 9387static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 9388{ 9389 struct i802_bss *bss = priv; 9390 struct wpa_driver_nl80211_data *drv = bss->drv; 9391 struct nl_msg *msg; 9392 enum nl80211_tdls_operation nl80211_oper; 9393 9394 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 9395 return -EOPNOTSUPP; 9396 9397 switch (oper) { 9398 case TDLS_DISCOVERY_REQ: 9399 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 9400 break; 9401 case TDLS_SETUP: 9402 nl80211_oper = NL80211_TDLS_SETUP; 9403 break; 9404 case TDLS_TEARDOWN: 9405 nl80211_oper = NL80211_TDLS_TEARDOWN; 9406 break; 9407 case TDLS_ENABLE_LINK: 9408 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 9409 break; 9410 case TDLS_DISABLE_LINK: 9411 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 9412 break; 9413 case TDLS_ENABLE: 9414 return 0; 9415 case TDLS_DISABLE: 9416 return 0; 9417 default: 9418 return -EINVAL; 9419 } 9420 9421 msg = nlmsg_alloc(); 9422 if (!msg) 9423 return -ENOMEM; 9424 9425 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 9426 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 9427 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 9428 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 9429 9430 return send_and_recv_msgs(drv, msg, NULL, NULL); 9431 9432nla_put_failure: 9433 nlmsg_free(msg); 9434 return -ENOBUFS; 9435} 9436 9437#endif /* CONFIG TDLS */ 9438 9439 9440#ifdef ANDROID 9441 9442typedef struct android_wifi_priv_cmd { 9443 char *buf; 9444 int used_len; 9445 int total_len; 9446} android_wifi_priv_cmd; 9447 9448static int drv_errors = 0; 9449 9450static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 9451{ 9452 drv_errors++; 9453 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 9454 drv_errors = 0; 9455 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 9456 } 9457} 9458 9459 9460static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 9461{ 9462 struct wpa_driver_nl80211_data *drv = bss->drv; 9463 struct ifreq ifr; 9464 android_wifi_priv_cmd priv_cmd; 9465 char buf[MAX_DRV_CMD_SIZE]; 9466 int ret; 9467 9468 os_memset(&ifr, 0, sizeof(ifr)); 9469 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 9470 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9471 9472 os_memset(buf, 0, sizeof(buf)); 9473 os_strlcpy(buf, cmd, sizeof(buf)); 9474 9475 priv_cmd.buf = buf; 9476 priv_cmd.used_len = sizeof(buf); 9477 priv_cmd.total_len = sizeof(buf); 9478 ifr.ifr_data = &priv_cmd; 9479 9480 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9481 if (ret < 0) { 9482 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 9483 __func__); 9484 wpa_driver_send_hang_msg(drv); 9485 return ret; 9486 } 9487 9488 drv_errors = 0; 9489 return 0; 9490} 9491 9492 9493static int android_pno_start(struct i802_bss *bss, 9494 struct wpa_driver_scan_params *params) 9495{ 9496 struct wpa_driver_nl80211_data *drv = bss->drv; 9497 struct ifreq ifr; 9498 android_wifi_priv_cmd priv_cmd; 9499 int ret = 0, i = 0, bp; 9500 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 9501 9502 bp = WEXT_PNOSETUP_HEADER_SIZE; 9503 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 9504 buf[bp++] = WEXT_PNO_TLV_PREFIX; 9505 buf[bp++] = WEXT_PNO_TLV_VERSION; 9506 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 9507 buf[bp++] = WEXT_PNO_TLV_RESERVED; 9508 9509 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 9510 /* Check that there is enough space needed for 1 more SSID, the 9511 * other sections and null termination */ 9512 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 9513 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 9514 break; 9515 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 9516 params->ssids[i].ssid, 9517 params->ssids[i].ssid_len); 9518 buf[bp++] = WEXT_PNO_SSID_SECTION; 9519 buf[bp++] = params->ssids[i].ssid_len; 9520 os_memcpy(&buf[bp], params->ssids[i].ssid, 9521 params->ssids[i].ssid_len); 9522 bp += params->ssids[i].ssid_len; 9523 i++; 9524 } 9525 9526 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 9527 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 9528 WEXT_PNO_SCAN_INTERVAL); 9529 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 9530 9531 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 9532 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 9533 WEXT_PNO_REPEAT); 9534 bp += WEXT_PNO_REPEAT_LENGTH; 9535 9536 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 9537 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 9538 WEXT_PNO_MAX_REPEAT); 9539 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 9540 9541 memset(&ifr, 0, sizeof(ifr)); 9542 memset(&priv_cmd, 0, sizeof(priv_cmd)); 9543 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 9544 9545 priv_cmd.buf = buf; 9546 priv_cmd.used_len = bp; 9547 priv_cmd.total_len = bp; 9548 ifr.ifr_data = &priv_cmd; 9549 9550 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 9551 9552 if (ret < 0) { 9553 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 9554 ret); 9555 wpa_driver_send_hang_msg(drv); 9556 return ret; 9557 } 9558 9559 drv_errors = 0; 9560 9561 return android_priv_cmd(bss, "PNOFORCE 1"); 9562} 9563 9564 9565static int android_pno_stop(struct i802_bss *bss) 9566{ 9567 return android_priv_cmd(bss, "PNOFORCE 0"); 9568} 9569 9570#endif /* ANDROID */ 9571 9572 9573static int driver_nl80211_set_key(const char *ifname, void *priv, 9574 enum wpa_alg alg, const u8 *addr, 9575 int key_idx, int set_tx, 9576 const u8 *seq, size_t seq_len, 9577 const u8 *key, size_t key_len) 9578{ 9579 struct i802_bss *bss = priv; 9580 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx, 9581 set_tx, seq, seq_len, key, key_len); 9582} 9583 9584 9585static int driver_nl80211_scan2(void *priv, 9586 struct wpa_driver_scan_params *params) 9587{ 9588 struct i802_bss *bss = priv; 9589 return wpa_driver_nl80211_scan(bss, params); 9590} 9591 9592 9593static int driver_nl80211_deauthenticate(void *priv, const u8 *addr, 9594 int reason_code) 9595{ 9596 struct i802_bss *bss = priv; 9597 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code); 9598} 9599 9600 9601static int driver_nl80211_authenticate(void *priv, 9602 struct wpa_driver_auth_params *params) 9603{ 9604 struct i802_bss *bss = priv; 9605 return wpa_driver_nl80211_authenticate(bss, params); 9606} 9607 9608 9609static void driver_nl80211_deinit(void *priv) 9610{ 9611 struct i802_bss *bss = priv; 9612 wpa_driver_nl80211_deinit(bss); 9613} 9614 9615 9616static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, 9617 const char *ifname) 9618{ 9619 struct i802_bss *bss = priv; 9620 return wpa_driver_nl80211_if_remove(bss, type, ifname); 9621} 9622 9623 9624static int driver_nl80211_send_mlme(void *priv, const u8 *data, 9625 size_t data_len, int noack) 9626{ 9627 struct i802_bss *bss = priv; 9628 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack, 9629 0, 0, 0, 0); 9630} 9631 9632 9633static int driver_nl80211_sta_remove(void *priv, const u8 *addr) 9634{ 9635 struct i802_bss *bss = priv; 9636 return wpa_driver_nl80211_sta_remove(bss, addr); 9637} 9638 9639 9640#if defined(HOSTAPD) || defined(CONFIG_AP) 9641static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr, 9642 const char *ifname, int vlan_id) 9643{ 9644 struct i802_bss *bss = priv; 9645 return i802_set_sta_vlan(bss, addr, ifname, vlan_id); 9646} 9647#endif /* HOSTAPD || CONFIG_AP */ 9648 9649 9650static int driver_nl80211_read_sta_data(void *priv, 9651 struct hostap_sta_driver_data *data, 9652 const u8 *addr) 9653{ 9654 struct i802_bss *bss = priv; 9655 return i802_read_sta_data(bss, data, addr); 9656} 9657 9658 9659static int driver_nl80211_send_action(void *priv, unsigned int freq, 9660 unsigned int wait_time, 9661 const u8 *dst, const u8 *src, 9662 const u8 *bssid, 9663 const u8 *data, size_t data_len, 9664 int no_cck) 9665{ 9666 struct i802_bss *bss = priv; 9667 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src, 9668 bssid, data, data_len, no_cck); 9669} 9670 9671 9672static int driver_nl80211_probe_req_report(void *priv, int report) 9673{ 9674 struct i802_bss *bss = priv; 9675 return wpa_driver_nl80211_probe_req_report(bss, report); 9676} 9677 9678 9679const struct wpa_driver_ops wpa_driver_nl80211_ops = { 9680 .name = "nl80211", 9681 .desc = "Linux nl80211/cfg80211", 9682 .get_bssid = wpa_driver_nl80211_get_bssid, 9683 .get_ssid = wpa_driver_nl80211_get_ssid, 9684 .set_key = driver_nl80211_set_key, 9685 .scan2 = driver_nl80211_scan2, 9686 .sched_scan = wpa_driver_nl80211_sched_scan, 9687 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 9688 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 9689 .deauthenticate = driver_nl80211_deauthenticate, 9690 .authenticate = driver_nl80211_authenticate, 9691 .associate = wpa_driver_nl80211_associate, 9692 .global_init = nl80211_global_init, 9693 .global_deinit = nl80211_global_deinit, 9694 .init2 = wpa_driver_nl80211_init, 9695 .deinit = driver_nl80211_deinit, 9696 .get_capa = wpa_driver_nl80211_get_capa, 9697 .set_operstate = wpa_driver_nl80211_set_operstate, 9698 .set_supp_port = wpa_driver_nl80211_set_supp_port, 9699 .set_country = wpa_driver_nl80211_set_country, 9700 .set_ap = wpa_driver_nl80211_set_ap, 9701 .if_add = wpa_driver_nl80211_if_add, 9702 .if_remove = driver_nl80211_if_remove, 9703 .send_mlme = driver_nl80211_send_mlme, 9704 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 9705 .sta_add = wpa_driver_nl80211_sta_add, 9706 .sta_remove = driver_nl80211_sta_remove, 9707 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 9708 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 9709#ifdef HOSTAPD 9710 .hapd_init = i802_init, 9711 .hapd_deinit = i802_deinit, 9712 .set_wds_sta = i802_set_wds_sta, 9713#endif /* HOSTAPD */ 9714#if defined(HOSTAPD) || defined(CONFIG_AP) 9715 .get_seqnum = i802_get_seqnum, 9716 .flush = i802_flush, 9717 .get_inact_sec = i802_get_inact_sec, 9718 .sta_clear_stats = i802_sta_clear_stats, 9719 .set_rts = i802_set_rts, 9720 .set_frag = i802_set_frag, 9721 .set_tx_queue_params = i802_set_tx_queue_params, 9722 .set_sta_vlan = driver_nl80211_set_sta_vlan, 9723 .sta_deauth = i802_sta_deauth, 9724 .sta_disassoc = i802_sta_disassoc, 9725#endif /* HOSTAPD || CONFIG_AP */ 9726 .read_sta_data = driver_nl80211_read_sta_data, 9727 .set_freq = i802_set_freq, 9728 .send_action = driver_nl80211_send_action, 9729 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9730 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9731 .cancel_remain_on_channel = 9732 wpa_driver_nl80211_cancel_remain_on_channel, 9733 .probe_req_report = driver_nl80211_probe_req_report, 9734 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9735 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 9736 .resume = wpa_driver_nl80211_resume, 9737 .send_ft_action = nl80211_send_ft_action, 9738 .signal_monitor = nl80211_signal_monitor, 9739 .signal_poll = nl80211_signal_poll, 9740 .send_frame = nl80211_send_frame, 9741 .shared_freq = wpa_driver_nl80211_shared_freq, 9742 .set_param = nl80211_set_param, 9743 .get_radio_name = nl80211_get_radio_name, 9744 .add_pmkid = nl80211_add_pmkid, 9745 .remove_pmkid = nl80211_remove_pmkid, 9746 .flush_pmkid = nl80211_flush_pmkid, 9747 .set_rekey_info = nl80211_set_rekey_info, 9748 .poll_client = nl80211_poll_client, 9749 .set_p2p_powersave = nl80211_set_p2p_powersave, 9750#ifdef CONFIG_TDLS 9751 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9752 .tdls_oper = nl80211_tdls_oper, 9753#endif /* CONFIG_TDLS */ 9754#ifdef ANDROID_P2P 9755 .set_noa = wpa_driver_set_p2p_noa, 9756 .get_noa = wpa_driver_get_p2p_noa, 9757 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9758#endif 9759#ifdef ANDROID 9760 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9761#endif 9762}; 9763