driver_nl80211.c revision 292b0c3a742226c295f8db76eaef9e90c90e7513
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 */ 110 111 112#ifdef ANDROID 113/* system/core/libnl_2 does not include nl_socket_set_nonblocking() */ 114static int android_nl_socket_set_nonblocking(struct nl_handle *handle) 115{ 116 return fcntl(nl_socket_get_fd(handle), F_SETFL, O_NONBLOCK); 117} 118#undef nl_socket_set_nonblocking 119#define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h) 120#endif /* ANDROID */ 121 122 123static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg) 124{ 125 struct nl_handle *handle; 126 127 handle = nl80211_handle_alloc(cb); 128 if (handle == NULL) { 129 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 130 "callbacks (%s)", dbg); 131 return NULL; 132 } 133 134 if (genl_connect(handle)) { 135 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 136 "netlink (%s)", dbg); 137 nl80211_handle_destroy(handle); 138 return NULL; 139 } 140 141 return handle; 142} 143 144 145static void nl_destroy_handles(struct nl_handle **handle) 146{ 147 if (*handle == NULL) 148 return; 149 nl80211_handle_destroy(*handle); 150 *handle = NULL; 151} 152 153 154#if __WORDSIZE == 64 155#define ELOOP_SOCKET_INVALID (intptr_t) 0x8888888888888889ULL 156#else 157#define ELOOP_SOCKET_INVALID (intptr_t) 0x88888889ULL 158#endif 159 160static void nl80211_register_eloop_read(struct nl_handle **handle, 161 eloop_sock_handler handler, 162 void *eloop_data) 163{ 164 nl_socket_set_nonblocking(*handle); 165 eloop_register_read_sock(nl_socket_get_fd(*handle), handler, 166 eloop_data, *handle); 167 *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID); 168} 169 170 171static void nl80211_destroy_eloop_handle(struct nl_handle **handle) 172{ 173 *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID); 174 eloop_unregister_read_sock(nl_socket_get_fd(*handle)); 175 nl_destroy_handles(handle); 176} 177 178 179#ifndef IFF_LOWER_UP 180#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ 181#endif 182#ifndef IFF_DORMANT 183#define IFF_DORMANT 0x20000 /* driver signals dormant */ 184#endif 185 186#ifndef IF_OPER_DORMANT 187#define IF_OPER_DORMANT 5 188#endif 189#ifndef IF_OPER_UP 190#define IF_OPER_UP 6 191#endif 192 193struct nl80211_global { 194 struct dl_list interfaces; 195 int if_add_ifindex; 196 u64 if_add_wdevid; 197 int if_add_wdevid_set; 198 struct netlink_data *netlink; 199 struct nl_cb *nl_cb; 200 struct nl_handle *nl; 201 int nl80211_id; 202 int ioctl_sock; /* socket for ioctl() use */ 203 204 struct nl_handle *nl_event; 205}; 206 207struct nl80211_wiphy_data { 208 struct dl_list list; 209 struct dl_list bsss; 210 struct dl_list drvs; 211 212 struct nl_handle *nl_beacons; 213 struct nl_cb *nl_cb; 214 215 int wiphy_idx; 216}; 217 218static void nl80211_global_deinit(void *priv); 219 220struct i802_bss { 221 struct wpa_driver_nl80211_data *drv; 222 struct i802_bss *next; 223 int ifindex; 224 u64 wdev_id; 225 char ifname[IFNAMSIZ + 1]; 226 char brname[IFNAMSIZ]; 227 unsigned int beacon_set:1; 228 unsigned int added_if_into_bridge:1; 229 unsigned int added_bridge:1; 230 unsigned int in_deinit:1; 231 unsigned int wdev_id_set:1; 232 unsigned int added_if:1; 233 234 u8 addr[ETH_ALEN]; 235 236 int freq; 237 int if_dynamic; 238 239 void *ctx; 240 struct nl_handle *nl_preq, *nl_mgmt; 241 struct nl_cb *nl_cb; 242 243 struct nl80211_wiphy_data *wiphy_data; 244 struct dl_list wiphy_list; 245}; 246 247struct wpa_driver_nl80211_data { 248 struct nl80211_global *global; 249 struct dl_list list; 250 struct dl_list wiphy_list; 251 char phyname[32]; 252 void *ctx; 253 int ifindex; 254 int if_removed; 255 int if_disabled; 256 int ignore_if_down_event; 257 struct rfkill_data *rfkill; 258 struct wpa_driver_capa capa; 259 u8 *extended_capa, *extended_capa_mask; 260 unsigned int extended_capa_len; 261 int has_capability; 262 263 int operstate; 264 265 int scan_complete_events; 266 enum scan_states { 267 NO_SCAN, SCAN_REQUESTED, SCAN_STARTED, SCAN_COMPLETED, 268 SCAN_ABORTED, SCHED_SCAN_STARTED, SCHED_SCAN_STOPPED, 269 SCHED_SCAN_RESULTS 270 } scan_state; 271 272 struct nl_cb *nl_cb; 273 274 u8 auth_bssid[ETH_ALEN]; 275 u8 auth_attempt_bssid[ETH_ALEN]; 276 u8 bssid[ETH_ALEN]; 277 u8 prev_bssid[ETH_ALEN]; 278 int associated; 279 u8 ssid[32]; 280 size_t ssid_len; 281 enum nl80211_iftype nlmode; 282 enum nl80211_iftype ap_scan_as_station; 283 unsigned int assoc_freq; 284 285 int monitor_sock; 286 int monitor_ifidx; 287 int monitor_refcount; 288 289 unsigned int disabled_11b_rates:1; 290 unsigned int pending_remain_on_chan:1; 291 unsigned int in_interface_list:1; 292 unsigned int device_ap_sme:1; 293 unsigned int poll_command_supported:1; 294 unsigned int data_tx_status:1; 295 unsigned int scan_for_auth:1; 296 unsigned int retry_auth:1; 297 unsigned int use_monitor:1; 298 unsigned int ignore_next_local_disconnect:1; 299 unsigned int allow_p2p_device:1; 300 unsigned int hostapd:1; 301 unsigned int start_mode_ap:1; 302 unsigned int start_iface_up:1; 303 unsigned int channel_switch_supported:1; 304 305 u64 remain_on_chan_cookie; 306 u64 send_action_cookie; 307 308 unsigned int last_mgmt_freq; 309 310 struct wpa_driver_scan_filter *filter_ssids; 311 size_t num_filter_ssids; 312 313 struct i802_bss *first_bss; 314 315 int eapol_tx_sock; 316 317 int eapol_sock; /* socket for EAPOL frames */ 318 319 int default_if_indices[16]; 320 int *if_indices; 321 int num_if_indices; 322 323 /* From failed authentication command */ 324 int auth_freq; 325 u8 auth_bssid_[ETH_ALEN]; 326 u8 auth_ssid[32]; 327 size_t auth_ssid_len; 328 int auth_alg; 329 u8 *auth_ie; 330 size_t auth_ie_len; 331 u8 auth_wep_key[4][16]; 332 size_t auth_wep_key_len[4]; 333 int auth_wep_tx_keyidx; 334 int auth_local_state_change; 335 int auth_p2p; 336}; 337 338 339static void wpa_driver_nl80211_deinit(struct i802_bss *bss); 340static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 341 void *timeout_ctx); 342static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 343 enum nl80211_iftype nlmode); 344static int 345wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv, 346 const u8 *set_addr, int first); 347static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 348 const u8 *addr, int cmd, u16 reason_code, 349 int local_state_change); 350static void nl80211_remove_monitor_interface( 351 struct wpa_driver_nl80211_data *drv); 352static int nl80211_send_frame_cmd(struct i802_bss *bss, 353 unsigned int freq, unsigned int wait, 354 const u8 *buf, size_t buf_len, u64 *cookie, 355 int no_cck, int no_ack, int offchanok); 356static int nl80211_register_frame(struct i802_bss *bss, 357 struct nl_handle *hl_handle, 358 u16 type, const u8 *match, size_t match_len); 359static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, 360 int report); 361#ifdef ANDROID 362static int android_pno_start(struct i802_bss *bss, 363 struct wpa_driver_scan_params *params); 364static int android_pno_stop(struct i802_bss *bss); 365extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 366 size_t buf_len); 367#endif /* ANDROID */ 368#ifdef ANDROID_P2P 369int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 370int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 371int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 372int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 373 const struct wpabuf *proberesp, 374 const struct wpabuf *assocresp); 375#endif /* ANDROID_P2P */ 376 377static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 378static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 379static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 380static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 381 enum wpa_driver_if_type type, 382 const char *ifname); 383 384static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 385 struct hostapd_freq_params *freq); 386static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 387 int ifindex, int disabled); 388 389static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 390static int wpa_driver_nl80211_authenticate_retry( 391 struct wpa_driver_nl80211_data *drv); 392 393static int i802_set_iface_flags(struct i802_bss *bss, int up); 394 395 396static const char * nl80211_command_to_string(enum nl80211_commands cmd) 397{ 398#define C2S(x) case x: return #x; 399 switch (cmd) { 400 C2S(NL80211_CMD_UNSPEC) 401 C2S(NL80211_CMD_GET_WIPHY) 402 C2S(NL80211_CMD_SET_WIPHY) 403 C2S(NL80211_CMD_NEW_WIPHY) 404 C2S(NL80211_CMD_DEL_WIPHY) 405 C2S(NL80211_CMD_GET_INTERFACE) 406 C2S(NL80211_CMD_SET_INTERFACE) 407 C2S(NL80211_CMD_NEW_INTERFACE) 408 C2S(NL80211_CMD_DEL_INTERFACE) 409 C2S(NL80211_CMD_GET_KEY) 410 C2S(NL80211_CMD_SET_KEY) 411 C2S(NL80211_CMD_NEW_KEY) 412 C2S(NL80211_CMD_DEL_KEY) 413 C2S(NL80211_CMD_GET_BEACON) 414 C2S(NL80211_CMD_SET_BEACON) 415 C2S(NL80211_CMD_START_AP) 416 C2S(NL80211_CMD_STOP_AP) 417 C2S(NL80211_CMD_GET_STATION) 418 C2S(NL80211_CMD_SET_STATION) 419 C2S(NL80211_CMD_NEW_STATION) 420 C2S(NL80211_CMD_DEL_STATION) 421 C2S(NL80211_CMD_GET_MPATH) 422 C2S(NL80211_CMD_SET_MPATH) 423 C2S(NL80211_CMD_NEW_MPATH) 424 C2S(NL80211_CMD_DEL_MPATH) 425 C2S(NL80211_CMD_SET_BSS) 426 C2S(NL80211_CMD_SET_REG) 427 C2S(NL80211_CMD_REQ_SET_REG) 428 C2S(NL80211_CMD_GET_MESH_CONFIG) 429 C2S(NL80211_CMD_SET_MESH_CONFIG) 430 C2S(NL80211_CMD_SET_MGMT_EXTRA_IE) 431 C2S(NL80211_CMD_GET_REG) 432 C2S(NL80211_CMD_GET_SCAN) 433 C2S(NL80211_CMD_TRIGGER_SCAN) 434 C2S(NL80211_CMD_NEW_SCAN_RESULTS) 435 C2S(NL80211_CMD_SCAN_ABORTED) 436 C2S(NL80211_CMD_REG_CHANGE) 437 C2S(NL80211_CMD_AUTHENTICATE) 438 C2S(NL80211_CMD_ASSOCIATE) 439 C2S(NL80211_CMD_DEAUTHENTICATE) 440 C2S(NL80211_CMD_DISASSOCIATE) 441 C2S(NL80211_CMD_MICHAEL_MIC_FAILURE) 442 C2S(NL80211_CMD_REG_BEACON_HINT) 443 C2S(NL80211_CMD_JOIN_IBSS) 444 C2S(NL80211_CMD_LEAVE_IBSS) 445 C2S(NL80211_CMD_TESTMODE) 446 C2S(NL80211_CMD_CONNECT) 447 C2S(NL80211_CMD_ROAM) 448 C2S(NL80211_CMD_DISCONNECT) 449 C2S(NL80211_CMD_SET_WIPHY_NETNS) 450 C2S(NL80211_CMD_GET_SURVEY) 451 C2S(NL80211_CMD_NEW_SURVEY_RESULTS) 452 C2S(NL80211_CMD_SET_PMKSA) 453 C2S(NL80211_CMD_DEL_PMKSA) 454 C2S(NL80211_CMD_FLUSH_PMKSA) 455 C2S(NL80211_CMD_REMAIN_ON_CHANNEL) 456 C2S(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL) 457 C2S(NL80211_CMD_SET_TX_BITRATE_MASK) 458 C2S(NL80211_CMD_REGISTER_FRAME) 459 C2S(NL80211_CMD_FRAME) 460 C2S(NL80211_CMD_FRAME_TX_STATUS) 461 C2S(NL80211_CMD_SET_POWER_SAVE) 462 C2S(NL80211_CMD_GET_POWER_SAVE) 463 C2S(NL80211_CMD_SET_CQM) 464 C2S(NL80211_CMD_NOTIFY_CQM) 465 C2S(NL80211_CMD_SET_CHANNEL) 466 C2S(NL80211_CMD_SET_WDS_PEER) 467 C2S(NL80211_CMD_FRAME_WAIT_CANCEL) 468 C2S(NL80211_CMD_JOIN_MESH) 469 C2S(NL80211_CMD_LEAVE_MESH) 470 C2S(NL80211_CMD_UNPROT_DEAUTHENTICATE) 471 C2S(NL80211_CMD_UNPROT_DISASSOCIATE) 472 C2S(NL80211_CMD_NEW_PEER_CANDIDATE) 473 C2S(NL80211_CMD_GET_WOWLAN) 474 C2S(NL80211_CMD_SET_WOWLAN) 475 C2S(NL80211_CMD_START_SCHED_SCAN) 476 C2S(NL80211_CMD_STOP_SCHED_SCAN) 477 C2S(NL80211_CMD_SCHED_SCAN_RESULTS) 478 C2S(NL80211_CMD_SCHED_SCAN_STOPPED) 479 C2S(NL80211_CMD_SET_REKEY_OFFLOAD) 480 C2S(NL80211_CMD_PMKSA_CANDIDATE) 481 C2S(NL80211_CMD_TDLS_OPER) 482 C2S(NL80211_CMD_TDLS_MGMT) 483 C2S(NL80211_CMD_UNEXPECTED_FRAME) 484 C2S(NL80211_CMD_PROBE_CLIENT) 485 C2S(NL80211_CMD_REGISTER_BEACONS) 486 C2S(NL80211_CMD_UNEXPECTED_4ADDR_FRAME) 487 C2S(NL80211_CMD_SET_NOACK_MAP) 488 C2S(NL80211_CMD_CH_SWITCH_NOTIFY) 489 C2S(NL80211_CMD_START_P2P_DEVICE) 490 C2S(NL80211_CMD_STOP_P2P_DEVICE) 491 C2S(NL80211_CMD_CONN_FAILED) 492 C2S(NL80211_CMD_SET_MCAST_RATE) 493 C2S(NL80211_CMD_SET_MAC_ACL) 494 C2S(NL80211_CMD_RADAR_DETECT) 495 C2S(NL80211_CMD_GET_PROTOCOL_FEATURES) 496 C2S(NL80211_CMD_UPDATE_FT_IES) 497 C2S(NL80211_CMD_FT_EVENT) 498 C2S(NL80211_CMD_CRIT_PROTOCOL_START) 499 C2S(NL80211_CMD_CRIT_PROTOCOL_STOP) 500 default: 501 return "NL80211_CMD_UNKNOWN"; 502 } 503#undef C2S 504} 505 506 507static int is_ap_interface(enum nl80211_iftype nlmode) 508{ 509 return (nlmode == NL80211_IFTYPE_AP || 510 nlmode == NL80211_IFTYPE_P2P_GO); 511} 512 513 514static int is_sta_interface(enum nl80211_iftype nlmode) 515{ 516 return (nlmode == NL80211_IFTYPE_STATION || 517 nlmode == NL80211_IFTYPE_P2P_CLIENT); 518} 519 520 521static int is_p2p_net_interface(enum nl80211_iftype nlmode) 522{ 523 return (nlmode == NL80211_IFTYPE_P2P_CLIENT || 524 nlmode == NL80211_IFTYPE_P2P_GO); 525} 526 527 528static void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv) 529{ 530 if (drv->associated) 531 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN); 532 drv->associated = 0; 533 os_memset(drv->bssid, 0, ETH_ALEN); 534} 535 536 537struct nl80211_bss_info_arg { 538 struct wpa_driver_nl80211_data *drv; 539 struct wpa_scan_results *res; 540 unsigned int assoc_freq; 541 u8 assoc_bssid[ETH_ALEN]; 542}; 543 544static int bss_info_handler(struct nl_msg *msg, void *arg); 545 546 547/* nl80211 code */ 548static int ack_handler(struct nl_msg *msg, void *arg) 549{ 550 int *err = arg; 551 *err = 0; 552 return NL_STOP; 553} 554 555static int finish_handler(struct nl_msg *msg, void *arg) 556{ 557 int *ret = arg; 558 *ret = 0; 559 return NL_SKIP; 560} 561 562static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 563 void *arg) 564{ 565 int *ret = arg; 566 *ret = err->error; 567 return NL_SKIP; 568} 569 570 571static int no_seq_check(struct nl_msg *msg, void *arg) 572{ 573 return NL_OK; 574} 575 576 577static int send_and_recv(struct nl80211_global *global, 578 struct nl_handle *nl_handle, struct nl_msg *msg, 579 int (*valid_handler)(struct nl_msg *, void *), 580 void *valid_data) 581{ 582 struct nl_cb *cb; 583 int err = -ENOMEM; 584 585 cb = nl_cb_clone(global->nl_cb); 586 if (!cb) 587 goto out; 588 589 err = nl_send_auto_complete(nl_handle, msg); 590 if (err < 0) 591 goto out; 592 593 err = 1; 594 595 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 596 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 597 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 598 599 if (valid_handler) 600 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 601 valid_handler, valid_data); 602 603 while (err > 0) { 604 int res = nl_recvmsgs(nl_handle, cb); 605 if (res) { 606 wpa_printf(MSG_INFO, 607 "nl80211: %s->nl_recvmsgs failed: %d", 608 __func__, res); 609 } 610 } 611 out: 612 nl_cb_put(cb); 613 nlmsg_free(msg); 614 return err; 615} 616 617 618static int send_and_recv_msgs_global(struct nl80211_global *global, 619 struct nl_msg *msg, 620 int (*valid_handler)(struct nl_msg *, void *), 621 void *valid_data) 622{ 623 return send_and_recv(global, global->nl, msg, valid_handler, 624 valid_data); 625} 626 627 628static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 629 struct nl_msg *msg, 630 int (*valid_handler)(struct nl_msg *, void *), 631 void *valid_data) 632{ 633 return send_and_recv(drv->global, drv->global->nl, msg, 634 valid_handler, valid_data); 635} 636 637 638struct family_data { 639 const char *group; 640 int id; 641}; 642 643 644static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss) 645{ 646 if (bss->wdev_id_set) 647 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id); 648 else 649 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 650 return 0; 651 652nla_put_failure: 653 return -1; 654} 655 656 657static int family_handler(struct nl_msg *msg, void *arg) 658{ 659 struct family_data *res = arg; 660 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 661 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 662 struct nlattr *mcgrp; 663 int i; 664 665 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 666 genlmsg_attrlen(gnlh, 0), NULL); 667 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 668 return NL_SKIP; 669 670 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 671 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 672 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 673 nla_len(mcgrp), NULL); 674 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 675 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 676 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 677 res->group, 678 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 679 continue; 680 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 681 break; 682 }; 683 684 return NL_SKIP; 685} 686 687 688static int nl_get_multicast_id(struct nl80211_global *global, 689 const char *family, const char *group) 690{ 691 struct nl_msg *msg; 692 int ret = -1; 693 struct family_data res = { group, -ENOENT }; 694 695 msg = nlmsg_alloc(); 696 if (!msg) 697 return -ENOMEM; 698 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 699 0, 0, CTRL_CMD_GETFAMILY, 0); 700 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 701 702 ret = send_and_recv_msgs_global(global, msg, family_handler, &res); 703 msg = NULL; 704 if (ret == 0) 705 ret = res.id; 706 707nla_put_failure: 708 nlmsg_free(msg); 709 return ret; 710} 711 712 713static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 714 struct nl_msg *msg, int flags, uint8_t cmd) 715{ 716 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 717 0, flags, cmd, 0); 718} 719 720 721struct wiphy_idx_data { 722 int wiphy_idx; 723 enum nl80211_iftype nlmode; 724 u8 *macaddr; 725}; 726 727 728static int netdev_info_handler(struct nl_msg *msg, void *arg) 729{ 730 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 731 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 732 struct wiphy_idx_data *info = arg; 733 734 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 735 genlmsg_attrlen(gnlh, 0), NULL); 736 737 if (tb[NL80211_ATTR_WIPHY]) 738 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 739 740 if (tb[NL80211_ATTR_IFTYPE]) 741 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]); 742 743 if (tb[NL80211_ATTR_MAC] && info->macaddr) 744 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]), 745 ETH_ALEN); 746 747 return NL_SKIP; 748} 749 750 751static int nl80211_get_wiphy_index(struct i802_bss *bss) 752{ 753 struct nl_msg *msg; 754 struct wiphy_idx_data data = { 755 .wiphy_idx = -1, 756 .macaddr = NULL, 757 }; 758 759 msg = nlmsg_alloc(); 760 if (!msg) 761 return NL80211_IFTYPE_UNSPECIFIED; 762 763 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 764 765 if (nl80211_set_iface_id(msg, bss) < 0) 766 goto nla_put_failure; 767 768 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 769 return data.wiphy_idx; 770 msg = NULL; 771nla_put_failure: 772 nlmsg_free(msg); 773 return -1; 774} 775 776 777static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss) 778{ 779 struct nl_msg *msg; 780 struct wiphy_idx_data data = { 781 .nlmode = NL80211_IFTYPE_UNSPECIFIED, 782 .macaddr = NULL, 783 }; 784 785 msg = nlmsg_alloc(); 786 if (!msg) 787 return -1; 788 789 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 790 791 if (nl80211_set_iface_id(msg, bss) < 0) 792 goto nla_put_failure; 793 794 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 795 return data.nlmode; 796 msg = NULL; 797nla_put_failure: 798 nlmsg_free(msg); 799 return NL80211_IFTYPE_UNSPECIFIED; 800} 801 802 803static int nl80211_get_macaddr(struct i802_bss *bss) 804{ 805 struct nl_msg *msg; 806 struct wiphy_idx_data data = { 807 .macaddr = bss->addr, 808 }; 809 810 msg = nlmsg_alloc(); 811 if (!msg) 812 return NL80211_IFTYPE_UNSPECIFIED; 813 814 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 815 if (nl80211_set_iface_id(msg, bss) < 0) 816 goto nla_put_failure; 817 818 return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data); 819 820nla_put_failure: 821 nlmsg_free(msg); 822 return NL80211_IFTYPE_UNSPECIFIED; 823} 824 825 826static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 827 struct nl80211_wiphy_data *w) 828{ 829 struct nl_msg *msg; 830 int ret = -1; 831 832 msg = nlmsg_alloc(); 833 if (!msg) 834 return -1; 835 836 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); 837 838 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); 839 840 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 841 msg = NULL; 842 if (ret) { 843 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 844 "failed: ret=%d (%s)", 845 ret, strerror(-ret)); 846 goto nla_put_failure; 847 } 848 ret = 0; 849nla_put_failure: 850 nlmsg_free(msg); 851 return ret; 852} 853 854 855static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 856{ 857 struct nl80211_wiphy_data *w = eloop_ctx; 858 int res; 859 860 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 861 862 res = nl_recvmsgs(handle, w->nl_cb); 863 if (res) { 864 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d", 865 __func__, res); 866 } 867} 868 869 870static int process_beacon_event(struct nl_msg *msg, void *arg) 871{ 872 struct nl80211_wiphy_data *w = arg; 873 struct wpa_driver_nl80211_data *drv; 874 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 875 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 876 union wpa_event_data event; 877 878 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 879 genlmsg_attrlen(gnlh, 0), NULL); 880 881 if (gnlh->cmd != NL80211_CMD_FRAME) { 882 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 883 gnlh->cmd); 884 return NL_SKIP; 885 } 886 887 if (!tb[NL80211_ATTR_FRAME]) 888 return NL_SKIP; 889 890 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 891 wiphy_list) { 892 os_memset(&event, 0, sizeof(event)); 893 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 894 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 895 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 896 } 897 898 return NL_SKIP; 899} 900 901 902static struct nl80211_wiphy_data * 903nl80211_get_wiphy_data_ap(struct i802_bss *bss) 904{ 905 static DEFINE_DL_LIST(nl80211_wiphys); 906 struct nl80211_wiphy_data *w; 907 int wiphy_idx, found = 0; 908 struct i802_bss *tmp_bss; 909 910 if (bss->wiphy_data != NULL) 911 return bss->wiphy_data; 912 913 wiphy_idx = nl80211_get_wiphy_index(bss); 914 915 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 916 if (w->wiphy_idx == wiphy_idx) 917 goto add; 918 } 919 920 /* alloc new one */ 921 w = os_zalloc(sizeof(*w)); 922 if (w == NULL) 923 return NULL; 924 w->wiphy_idx = wiphy_idx; 925 dl_list_init(&w->bsss); 926 dl_list_init(&w->drvs); 927 928 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 929 if (!w->nl_cb) { 930 os_free(w); 931 return NULL; 932 } 933 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 934 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, 935 w); 936 937 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 938 "wiphy beacons"); 939 if (w->nl_beacons == NULL) { 940 os_free(w); 941 return NULL; 942 } 943 944 if (nl80211_register_beacons(bss->drv, w)) { 945 nl_destroy_handles(&w->nl_beacons); 946 os_free(w); 947 return NULL; 948 } 949 950 nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w); 951 952 dl_list_add(&nl80211_wiphys, &w->list); 953 954add: 955 /* drv entry for this bss already there? */ 956 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 957 if (tmp_bss->drv == bss->drv) { 958 found = 1; 959 break; 960 } 961 } 962 /* if not add it */ 963 if (!found) 964 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 965 966 dl_list_add(&w->bsss, &bss->wiphy_list); 967 bss->wiphy_data = w; 968 return w; 969} 970 971 972static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 973{ 974 struct nl80211_wiphy_data *w = bss->wiphy_data; 975 struct i802_bss *tmp_bss; 976 int found = 0; 977 978 if (w == NULL) 979 return; 980 bss->wiphy_data = NULL; 981 dl_list_del(&bss->wiphy_list); 982 983 /* still any for this drv present? */ 984 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 985 if (tmp_bss->drv == bss->drv) { 986 found = 1; 987 break; 988 } 989 } 990 /* if not remove it */ 991 if (!found) 992 dl_list_del(&bss->drv->wiphy_list); 993 994 if (!dl_list_empty(&w->bsss)) 995 return; 996 997 nl80211_destroy_eloop_handle(&w->nl_beacons); 998 999 nl_cb_put(w->nl_cb); 1000 dl_list_del(&w->list); 1001 os_free(w); 1002} 1003 1004 1005static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 1006{ 1007 struct i802_bss *bss = priv; 1008 struct wpa_driver_nl80211_data *drv = bss->drv; 1009 if (!drv->associated) 1010 return -1; 1011 os_memcpy(bssid, drv->bssid, ETH_ALEN); 1012 return 0; 1013} 1014 1015 1016static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 1017{ 1018 struct i802_bss *bss = priv; 1019 struct wpa_driver_nl80211_data *drv = bss->drv; 1020 if (!drv->associated) 1021 return -1; 1022 os_memcpy(ssid, drv->ssid, drv->ssid_len); 1023 return drv->ssid_len; 1024} 1025 1026 1027static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, 1028 char *buf, size_t len, int del) 1029{ 1030 union wpa_event_data event; 1031 1032 os_memset(&event, 0, sizeof(event)); 1033 if (len > sizeof(event.interface_status.ifname)) 1034 len = sizeof(event.interface_status.ifname) - 1; 1035 os_memcpy(event.interface_status.ifname, buf, len); 1036 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : 1037 EVENT_INTERFACE_ADDED; 1038 1039 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", 1040 del ? "DEL" : "NEW", 1041 event.interface_status.ifname, 1042 del ? "removed" : "added"); 1043 1044 if (os_strcmp(drv->first_bss->ifname, event.interface_status.ifname) == 1045 0) { 1046 if (del) { 1047 if (drv->if_removed) { 1048 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 1049 "already set - ignore event"); 1050 return; 1051 } 1052 drv->if_removed = 1; 1053 } else { 1054 if (if_nametoindex(drv->first_bss->ifname) == 0) { 1055 wpa_printf(MSG_DEBUG, "nl80211: Interface %s " 1056 "does not exist - ignore " 1057 "RTM_NEWLINK", 1058 drv->first_bss->ifname); 1059 return; 1060 } 1061 if (!drv->if_removed) { 1062 wpa_printf(MSG_DEBUG, "nl80211: if_removed " 1063 "already cleared - ignore event"); 1064 return; 1065 } 1066 drv->if_removed = 0; 1067 } 1068 } 1069 1070 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 1071} 1072 1073 1074static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 1075 u8 *buf, size_t len) 1076{ 1077 int attrlen, rta_len; 1078 struct rtattr *attr; 1079 1080 attrlen = len; 1081 attr = (struct rtattr *) buf; 1082 1083 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1084 while (RTA_OK(attr, attrlen)) { 1085 if (attr->rta_type == IFLA_IFNAME) { 1086 if (os_strcmp(((char *) attr) + rta_len, 1087 drv->first_bss->ifname) == 0) 1088 return 1; 1089 else 1090 break; 1091 } 1092 attr = RTA_NEXT(attr, attrlen); 1093 } 1094 1095 return 0; 1096} 1097 1098 1099static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 1100 int ifindex, u8 *buf, size_t len) 1101{ 1102 if (drv->ifindex == ifindex) 1103 return 1; 1104 1105 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 1106 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 1107 "interface"); 1108 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0); 1109 return 1; 1110 } 1111 1112 return 0; 1113} 1114 1115 1116static struct wpa_driver_nl80211_data * 1117nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 1118{ 1119 struct wpa_driver_nl80211_data *drv; 1120 dl_list_for_each(drv, &global->interfaces, 1121 struct wpa_driver_nl80211_data, list) { 1122 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 1123 have_ifidx(drv, idx)) 1124 return drv; 1125 } 1126 return NULL; 1127} 1128 1129 1130static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 1131 struct ifinfomsg *ifi, 1132 u8 *buf, size_t len) 1133{ 1134 struct nl80211_global *global = ctx; 1135 struct wpa_driver_nl80211_data *drv; 1136 int attrlen, rta_len; 1137 struct rtattr *attr; 1138 u32 brid = 0; 1139 char namebuf[IFNAMSIZ]; 1140 1141 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1142 if (!drv) { 1143 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " 1144 "ifindex %d", ifi->ifi_index); 1145 return; 1146 } 1147 1148 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " 1149 "(%s%s%s%s)", 1150 drv->operstate, ifi->ifi_flags, 1151 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 1152 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 1153 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 1154 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 1155 1156 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 1157 if (if_indextoname(ifi->ifi_index, namebuf) && 1158 linux_iface_up(drv->global->ioctl_sock, 1159 drv->first_bss->ifname) > 0) { 1160 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 1161 "event since interface %s is up", namebuf); 1162 return; 1163 } 1164 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 1165 if (drv->ignore_if_down_event) { 1166 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 1167 "event generated by mode change"); 1168 drv->ignore_if_down_event = 0; 1169 } else { 1170 drv->if_disabled = 1; 1171 wpa_supplicant_event(drv->ctx, 1172 EVENT_INTERFACE_DISABLED, NULL); 1173 } 1174 } 1175 1176 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 1177 if (if_indextoname(ifi->ifi_index, namebuf) && 1178 linux_iface_up(drv->global->ioctl_sock, 1179 drv->first_bss->ifname) == 0) { 1180 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 1181 "event since interface %s is down", 1182 namebuf); 1183 } else if (if_nametoindex(drv->first_bss->ifname) == 0) { 1184 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 1185 "event since interface %s does not exist", 1186 drv->first_bss->ifname); 1187 } else if (drv->if_removed) { 1188 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 1189 "event since interface %s is marked " 1190 "removed", drv->first_bss->ifname); 1191 } else { 1192 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 1193 drv->if_disabled = 0; 1194 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 1195 NULL); 1196 } 1197 } 1198 1199 /* 1200 * Some drivers send the association event before the operup event--in 1201 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 1202 * fails. This will hit us when wpa_supplicant does not need to do 1203 * IEEE 802.1X authentication 1204 */ 1205 if (drv->operstate == 1 && 1206 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 1207 !(ifi->ifi_flags & IFF_RUNNING)) 1208 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 1209 -1, IF_OPER_UP); 1210 1211 attrlen = len; 1212 attr = (struct rtattr *) buf; 1213 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1214 while (RTA_OK(attr, attrlen)) { 1215 if (attr->rta_type == IFLA_IFNAME) { 1216 wpa_driver_nl80211_event_link( 1217 drv, 1218 ((char *) attr) + rta_len, 1219 attr->rta_len - rta_len, 0); 1220 } else if (attr->rta_type == IFLA_MASTER) 1221 brid = nla_get_u32((struct nlattr *) attr); 1222 attr = RTA_NEXT(attr, attrlen); 1223 } 1224 1225 if (ifi->ifi_family == AF_BRIDGE && brid) { 1226 /* device has been added to bridge */ 1227 if_indextoname(brid, namebuf); 1228 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 1229 brid, namebuf); 1230 add_ifidx(drv, brid); 1231 } 1232} 1233 1234 1235static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 1236 struct ifinfomsg *ifi, 1237 u8 *buf, size_t len) 1238{ 1239 struct nl80211_global *global = ctx; 1240 struct wpa_driver_nl80211_data *drv; 1241 int attrlen, rta_len; 1242 struct rtattr *attr; 1243 u32 brid = 0; 1244 1245 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1246 if (!drv) { 1247 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for " 1248 "foreign ifindex %d", ifi->ifi_index); 1249 return; 1250 } 1251 1252 attrlen = len; 1253 attr = (struct rtattr *) buf; 1254 1255 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1256 while (RTA_OK(attr, attrlen)) { 1257 if (attr->rta_type == IFLA_IFNAME) { 1258 wpa_driver_nl80211_event_link( 1259 drv, 1260 ((char *) attr) + rta_len, 1261 attr->rta_len - rta_len, 1); 1262 } else if (attr->rta_type == IFLA_MASTER) 1263 brid = nla_get_u32((struct nlattr *) attr); 1264 attr = RTA_NEXT(attr, attrlen); 1265 } 1266 1267 if (ifi->ifi_family == AF_BRIDGE && brid) { 1268 /* device has been removed from bridge */ 1269 char namebuf[IFNAMSIZ]; 1270 if_indextoname(brid, namebuf); 1271 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 1272 "%s", brid, namebuf); 1273 del_ifidx(drv, brid); 1274 } 1275} 1276 1277 1278static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 1279 const u8 *frame, size_t len) 1280{ 1281 const struct ieee80211_mgmt *mgmt; 1282 union wpa_event_data event; 1283 1284 wpa_printf(MSG_DEBUG, "nl80211: Authenticate event"); 1285 mgmt = (const struct ieee80211_mgmt *) frame; 1286 if (len < 24 + sizeof(mgmt->u.auth)) { 1287 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1288 "frame"); 1289 return; 1290 } 1291 1292 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 1293 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN); 1294 os_memset(&event, 0, sizeof(event)); 1295 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 1296 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 1297 event.auth.auth_transaction = 1298 le_to_host16(mgmt->u.auth.auth_transaction); 1299 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 1300 if (len > 24 + sizeof(mgmt->u.auth)) { 1301 event.auth.ies = mgmt->u.auth.variable; 1302 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 1303 } 1304 1305 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 1306} 1307 1308 1309static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1310{ 1311 struct nl_msg *msg; 1312 int ret; 1313 struct nl80211_bss_info_arg arg; 1314 1315 os_memset(&arg, 0, sizeof(arg)); 1316 msg = nlmsg_alloc(); 1317 if (!msg) 1318 goto nla_put_failure; 1319 1320 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1321 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1322 1323 arg.drv = drv; 1324 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 1325 msg = NULL; 1326 if (ret == 0) { 1327 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1328 "associated BSS from scan results: %u MHz", 1329 arg.assoc_freq); 1330 if (arg.assoc_freq) 1331 drv->assoc_freq = arg.assoc_freq; 1332 return drv->assoc_freq; 1333 } 1334 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1335 "(%s)", ret, strerror(-ret)); 1336nla_put_failure: 1337 nlmsg_free(msg); 1338 return drv->assoc_freq; 1339} 1340 1341 1342static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 1343 const u8 *frame, size_t len) 1344{ 1345 const struct ieee80211_mgmt *mgmt; 1346 union wpa_event_data event; 1347 u16 status; 1348 1349 wpa_printf(MSG_DEBUG, "nl80211: Associate event"); 1350 mgmt = (const struct ieee80211_mgmt *) frame; 1351 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 1352 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1353 "frame"); 1354 return; 1355 } 1356 1357 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1358 if (status != WLAN_STATUS_SUCCESS) { 1359 os_memset(&event, 0, sizeof(event)); 1360 event.assoc_reject.bssid = mgmt->bssid; 1361 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1362 event.assoc_reject.resp_ies = 1363 (u8 *) mgmt->u.assoc_resp.variable; 1364 event.assoc_reject.resp_ies_len = 1365 len - 24 - sizeof(mgmt->u.assoc_resp); 1366 } 1367 event.assoc_reject.status_code = status; 1368 1369 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1370 return; 1371 } 1372 1373 drv->associated = 1; 1374 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 1375 os_memcpy(drv->prev_bssid, mgmt->sa, ETH_ALEN); 1376 1377 os_memset(&event, 0, sizeof(event)); 1378 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1379 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 1380 event.assoc_info.resp_ies_len = 1381 len - 24 - sizeof(mgmt->u.assoc_resp); 1382 } 1383 1384 event.assoc_info.freq = drv->assoc_freq; 1385 1386 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1387} 1388 1389 1390static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 1391 enum nl80211_commands cmd, struct nlattr *status, 1392 struct nlattr *addr, struct nlattr *req_ie, 1393 struct nlattr *resp_ie) 1394{ 1395 union wpa_event_data event; 1396 1397 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1398 /* 1399 * Avoid reporting two association events that would confuse 1400 * the core code. 1401 */ 1402 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 1403 "when using userspace SME", cmd); 1404 return; 1405 } 1406 1407 if (cmd == NL80211_CMD_CONNECT) 1408 wpa_printf(MSG_DEBUG, "nl80211: Connect event"); 1409 else if (cmd == NL80211_CMD_ROAM) 1410 wpa_printf(MSG_DEBUG, "nl80211: Roam event"); 1411 1412 os_memset(&event, 0, sizeof(event)); 1413 if (cmd == NL80211_CMD_CONNECT && 1414 nla_get_u16(status) != WLAN_STATUS_SUCCESS) { 1415 if (addr) 1416 event.assoc_reject.bssid = nla_data(addr); 1417 if (resp_ie) { 1418 event.assoc_reject.resp_ies = nla_data(resp_ie); 1419 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 1420 } 1421 event.assoc_reject.status_code = nla_get_u16(status); 1422 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1423 return; 1424 } 1425 1426 drv->associated = 1; 1427 if (addr) { 1428 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 1429 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN); 1430 } 1431 1432 if (req_ie) { 1433 event.assoc_info.req_ies = nla_data(req_ie); 1434 event.assoc_info.req_ies_len = nla_len(req_ie); 1435 } 1436 if (resp_ie) { 1437 event.assoc_info.resp_ies = nla_data(resp_ie); 1438 event.assoc_info.resp_ies_len = nla_len(resp_ie); 1439 } 1440 1441 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 1442 1443 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1444} 1445 1446 1447static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, 1448 struct nlattr *reason, struct nlattr *addr, 1449 struct nlattr *by_ap) 1450{ 1451 union wpa_event_data data; 1452 unsigned int locally_generated = by_ap == NULL; 1453 1454 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1455 /* 1456 * Avoid reporting two disassociation events that could 1457 * confuse the core code. 1458 */ 1459 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1460 "event when using userspace SME"); 1461 return; 1462 } 1463 1464 if (drv->ignore_next_local_disconnect) { 1465 drv->ignore_next_local_disconnect = 0; 1466 if (locally_generated) { 1467 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1468 "event triggered during reassociation"); 1469 return; 1470 } 1471 wpa_printf(MSG_WARNING, "nl80211: Was expecting local " 1472 "disconnect but got another disconnect " 1473 "event first"); 1474 } 1475 1476 wpa_printf(MSG_DEBUG, "nl80211: Disconnect event"); 1477 nl80211_mark_disconnected(drv); 1478 os_memset(&data, 0, sizeof(data)); 1479 if (reason) 1480 data.deauth_info.reason_code = nla_get_u16(reason); 1481 data.deauth_info.locally_generated = by_ap == NULL; 1482 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data); 1483} 1484 1485 1486static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv, 1487 struct nlattr *freq, struct nlattr *type) 1488{ 1489 union wpa_event_data data; 1490 int ht_enabled = 1; 1491 int chan_offset = 0; 1492 1493 wpa_printf(MSG_DEBUG, "nl80211: Channel switch event"); 1494 1495 if (!freq || !type) 1496 return; 1497 1498 switch (nla_get_u32(type)) { 1499 case NL80211_CHAN_NO_HT: 1500 ht_enabled = 0; 1501 break; 1502 case NL80211_CHAN_HT20: 1503 break; 1504 case NL80211_CHAN_HT40PLUS: 1505 chan_offset = 1; 1506 break; 1507 case NL80211_CHAN_HT40MINUS: 1508 chan_offset = -1; 1509 break; 1510 } 1511 1512 data.ch_switch.freq = nla_get_u32(freq); 1513 data.ch_switch.ht_enabled = ht_enabled; 1514 data.ch_switch.ch_offset = chan_offset; 1515 1516 drv->first_bss->freq = data.ch_switch.freq; 1517 1518 wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data); 1519} 1520 1521 1522static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 1523 enum nl80211_commands cmd, struct nlattr *addr) 1524{ 1525 union wpa_event_data event; 1526 enum wpa_event_type ev; 1527 1528 if (nla_len(addr) != ETH_ALEN) 1529 return; 1530 1531 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 1532 cmd, MAC2STR((u8 *) nla_data(addr))); 1533 1534 if (cmd == NL80211_CMD_AUTHENTICATE) 1535 ev = EVENT_AUTH_TIMED_OUT; 1536 else if (cmd == NL80211_CMD_ASSOCIATE) 1537 ev = EVENT_ASSOC_TIMED_OUT; 1538 else 1539 return; 1540 1541 os_memset(&event, 0, sizeof(event)); 1542 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 1543 wpa_supplicant_event(drv->ctx, ev, &event); 1544} 1545 1546 1547static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, 1548 struct nlattr *freq, struct nlattr *sig, 1549 const u8 *frame, size_t len) 1550{ 1551 const struct ieee80211_mgmt *mgmt; 1552 union wpa_event_data event; 1553 u16 fc, stype; 1554 int ssi_signal = 0; 1555 int rx_freq = 0; 1556 1557 wpa_printf(MSG_MSGDUMP, "nl80211: Frame event"); 1558 mgmt = (const struct ieee80211_mgmt *) frame; 1559 if (len < 24) { 1560 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); 1561 return; 1562 } 1563 1564 fc = le_to_host16(mgmt->frame_control); 1565 stype = WLAN_FC_GET_STYPE(fc); 1566 1567 if (sig) 1568 ssi_signal = (s32) nla_get_u32(sig); 1569 1570 os_memset(&event, 0, sizeof(event)); 1571 if (freq) { 1572 event.rx_action.freq = nla_get_u32(freq); 1573 rx_freq = drv->last_mgmt_freq = event.rx_action.freq; 1574 } 1575 wpa_printf(MSG_DEBUG, 1576 "nl80211: RX frame freq=%d ssi_signal=%d stype=%u len=%u", 1577 rx_freq, ssi_signal, stype, (unsigned int) len); 1578 if (stype == WLAN_FC_STYPE_ACTION) { 1579 event.rx_action.da = mgmt->da; 1580 event.rx_action.sa = mgmt->sa; 1581 event.rx_action.bssid = mgmt->bssid; 1582 event.rx_action.category = mgmt->u.action.category; 1583 event.rx_action.data = &mgmt->u.action.category + 1; 1584 event.rx_action.len = frame + len - event.rx_action.data; 1585 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); 1586 } else { 1587 event.rx_mgmt.frame = frame; 1588 event.rx_mgmt.frame_len = len; 1589 event.rx_mgmt.ssi_signal = ssi_signal; 1590 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 1591 } 1592} 1593 1594 1595static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, 1596 struct nlattr *cookie, const u8 *frame, 1597 size_t len, struct nlattr *ack) 1598{ 1599 union wpa_event_data event; 1600 const struct ieee80211_hdr *hdr; 1601 u16 fc; 1602 1603 wpa_printf(MSG_DEBUG, "nl80211: Frame TX status event"); 1604 if (!is_ap_interface(drv->nlmode)) { 1605 u64 cookie_val; 1606 1607 if (!cookie) 1608 return; 1609 1610 cookie_val = nla_get_u64(cookie); 1611 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" 1612 " cookie=0%llx%s (ack=%d)", 1613 (long long unsigned int) cookie_val, 1614 cookie_val == drv->send_action_cookie ? 1615 " (match)" : " (unknown)", ack != NULL); 1616 if (cookie_val != drv->send_action_cookie) 1617 return; 1618 } 1619 1620 hdr = (const struct ieee80211_hdr *) frame; 1621 fc = le_to_host16(hdr->frame_control); 1622 1623 os_memset(&event, 0, sizeof(event)); 1624 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 1625 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 1626 event.tx_status.dst = hdr->addr1; 1627 event.tx_status.data = frame; 1628 event.tx_status.data_len = len; 1629 event.tx_status.ack = ack != NULL; 1630 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 1631} 1632 1633 1634static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 1635 enum wpa_event_type type, 1636 const u8 *frame, size_t len) 1637{ 1638 const struct ieee80211_mgmt *mgmt; 1639 union wpa_event_data event; 1640 const u8 *bssid = NULL; 1641 u16 reason_code = 0; 1642 1643 if (type == EVENT_DEAUTH) 1644 wpa_printf(MSG_DEBUG, "nl80211: Deauthenticate event"); 1645 else 1646 wpa_printf(MSG_DEBUG, "nl80211: Disassociate event"); 1647 1648 mgmt = (const struct ieee80211_mgmt *) frame; 1649 if (len >= 24) { 1650 bssid = mgmt->bssid; 1651 1652 if ((drv->capa.flags & WPA_DRIVER_FLAGS_SME) && 1653 !drv->associated && 1654 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0 && 1655 os_memcmp(bssid, drv->auth_attempt_bssid, ETH_ALEN) != 0 && 1656 os_memcmp(bssid, drv->prev_bssid, ETH_ALEN) == 0) { 1657 /* 1658 * Avoid issues with some roaming cases where 1659 * disconnection event for the old AP may show up after 1660 * we have started connection with the new AP. 1661 */ 1662 wpa_printf(MSG_DEBUG, "nl80211: Ignore deauth/disassoc event from old AP " MACSTR " when already authenticating with " MACSTR, 1663 MAC2STR(bssid), 1664 MAC2STR(drv->auth_attempt_bssid)); 1665 return; 1666 } 1667 1668 if (drv->associated != 0 && 1669 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 1670 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 1671 /* 1672 * We have presumably received this deauth as a 1673 * response to a clear_state_mismatch() outgoing 1674 * deauth. Don't let it take us offline! 1675 */ 1676 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 1677 "from Unknown BSSID " MACSTR " -- ignoring", 1678 MAC2STR(bssid)); 1679 return; 1680 } 1681 } 1682 1683 nl80211_mark_disconnected(drv); 1684 os_memset(&event, 0, sizeof(event)); 1685 1686 /* Note: Same offset for Reason Code in both frame subtypes */ 1687 if (len >= 24 + sizeof(mgmt->u.deauth)) 1688 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1689 1690 if (type == EVENT_DISASSOC) { 1691 event.disassoc_info.locally_generated = 1692 !os_memcmp(mgmt->sa, drv->first_bss->addr, ETH_ALEN); 1693 event.disassoc_info.addr = bssid; 1694 event.disassoc_info.reason_code = reason_code; 1695 if (frame + len > mgmt->u.disassoc.variable) { 1696 event.disassoc_info.ie = mgmt->u.disassoc.variable; 1697 event.disassoc_info.ie_len = frame + len - 1698 mgmt->u.disassoc.variable; 1699 } 1700 } else { 1701 event.deauth_info.locally_generated = 1702 !os_memcmp(mgmt->sa, drv->first_bss->addr, ETH_ALEN); 1703 event.deauth_info.addr = bssid; 1704 event.deauth_info.reason_code = reason_code; 1705 if (frame + len > mgmt->u.deauth.variable) { 1706 event.deauth_info.ie = mgmt->u.deauth.variable; 1707 event.deauth_info.ie_len = frame + len - 1708 mgmt->u.deauth.variable; 1709 } 1710 } 1711 1712 wpa_supplicant_event(drv->ctx, type, &event); 1713} 1714 1715 1716static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 1717 enum wpa_event_type type, 1718 const u8 *frame, size_t len) 1719{ 1720 const struct ieee80211_mgmt *mgmt; 1721 union wpa_event_data event; 1722 u16 reason_code = 0; 1723 1724 if (type == EVENT_UNPROT_DEAUTH) 1725 wpa_printf(MSG_DEBUG, "nl80211: Unprot Deauthenticate event"); 1726 else 1727 wpa_printf(MSG_DEBUG, "nl80211: Unprot Disassociate event"); 1728 1729 if (len < 24) 1730 return; 1731 1732 mgmt = (const struct ieee80211_mgmt *) frame; 1733 1734 os_memset(&event, 0, sizeof(event)); 1735 /* Note: Same offset for Reason Code in both frame subtypes */ 1736 if (len >= 24 + sizeof(mgmt->u.deauth)) 1737 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1738 1739 if (type == EVENT_UNPROT_DISASSOC) { 1740 event.unprot_disassoc.sa = mgmt->sa; 1741 event.unprot_disassoc.da = mgmt->da; 1742 event.unprot_disassoc.reason_code = reason_code; 1743 } else { 1744 event.unprot_deauth.sa = mgmt->sa; 1745 event.unprot_deauth.da = mgmt->da; 1746 event.unprot_deauth.reason_code = reason_code; 1747 } 1748 1749 wpa_supplicant_event(drv->ctx, type, &event); 1750} 1751 1752 1753static void mlme_event(struct i802_bss *bss, 1754 enum nl80211_commands cmd, struct nlattr *frame, 1755 struct nlattr *addr, struct nlattr *timed_out, 1756 struct nlattr *freq, struct nlattr *ack, 1757 struct nlattr *cookie, struct nlattr *sig) 1758{ 1759 struct wpa_driver_nl80211_data *drv = bss->drv; 1760 const u8 *data; 1761 size_t len; 1762 1763 if (timed_out && addr) { 1764 mlme_timeout_event(drv, cmd, addr); 1765 return; 1766 } 1767 1768 if (frame == NULL) { 1769 wpa_printf(MSG_DEBUG, 1770 "nl80211: MLME event %d (%s) without frame data", 1771 cmd, nl80211_command_to_string(cmd)); 1772 return; 1773 } 1774 1775 data = nla_data(frame); 1776 len = nla_len(frame); 1777 if (len < 4 + 2 * ETH_ALEN) { 1778 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d (%s) on %s(" 1779 MACSTR ") - too short", 1780 cmd, nl80211_command_to_string(cmd), bss->ifname, 1781 MAC2STR(bss->addr)); 1782 return; 1783 } 1784 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d (%s) on %s(" MACSTR 1785 ") A1=" MACSTR " A2=" MACSTR, cmd, 1786 nl80211_command_to_string(cmd), bss->ifname, 1787 MAC2STR(bss->addr), MAC2STR(data + 4), 1788 MAC2STR(data + 4 + ETH_ALEN)); 1789 if (cmd != NL80211_CMD_FRAME_TX_STATUS && !(data[4] & 0x01) && 1790 os_memcmp(bss->addr, data + 4, ETH_ALEN) != 0 && 1791 os_memcmp(bss->addr, data + 4 + ETH_ALEN, ETH_ALEN) != 0) { 1792 wpa_printf(MSG_MSGDUMP, "nl80211: %s: Ignore MLME frame event " 1793 "for foreign address", bss->ifname); 1794 return; 1795 } 1796 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 1797 nla_data(frame), nla_len(frame)); 1798 1799 switch (cmd) { 1800 case NL80211_CMD_AUTHENTICATE: 1801 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1802 break; 1803 case NL80211_CMD_ASSOCIATE: 1804 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1805 break; 1806 case NL80211_CMD_DEAUTHENTICATE: 1807 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1808 nla_data(frame), nla_len(frame)); 1809 break; 1810 case NL80211_CMD_DISASSOCIATE: 1811 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1812 nla_data(frame), nla_len(frame)); 1813 break; 1814 case NL80211_CMD_FRAME: 1815 mlme_event_mgmt(drv, freq, sig, nla_data(frame), 1816 nla_len(frame)); 1817 break; 1818 case NL80211_CMD_FRAME_TX_STATUS: 1819 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 1820 nla_len(frame), ack); 1821 break; 1822 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1823 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1824 nla_data(frame), nla_len(frame)); 1825 break; 1826 case NL80211_CMD_UNPROT_DISASSOCIATE: 1827 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1828 nla_data(frame), nla_len(frame)); 1829 break; 1830 default: 1831 break; 1832 } 1833} 1834 1835 1836static void mlme_event_michael_mic_failure(struct i802_bss *bss, 1837 struct nlattr *tb[]) 1838{ 1839 union wpa_event_data data; 1840 1841 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1842 os_memset(&data, 0, sizeof(data)); 1843 if (tb[NL80211_ATTR_MAC]) { 1844 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1845 nla_data(tb[NL80211_ATTR_MAC]), 1846 nla_len(tb[NL80211_ATTR_MAC])); 1847 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1848 } 1849 if (tb[NL80211_ATTR_KEY_SEQ]) { 1850 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1851 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1852 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1853 } 1854 if (tb[NL80211_ATTR_KEY_TYPE]) { 1855 enum nl80211_key_type key_type = 1856 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1857 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1858 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1859 data.michael_mic_failure.unicast = 1; 1860 } else 1861 data.michael_mic_failure.unicast = 1; 1862 1863 if (tb[NL80211_ATTR_KEY_IDX]) { 1864 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1865 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1866 } 1867 1868 wpa_supplicant_event(bss->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1869} 1870 1871 1872static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1873 struct nlattr *tb[]) 1874{ 1875 if (tb[NL80211_ATTR_MAC] == NULL) { 1876 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1877 "event"); 1878 return; 1879 } 1880 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1881 1882 drv->associated = 1; 1883 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1884 MAC2STR(drv->bssid)); 1885 1886 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1887} 1888 1889 1890static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1891 int cancel_event, struct nlattr *tb[]) 1892{ 1893 unsigned int freq, chan_type, duration; 1894 union wpa_event_data data; 1895 u64 cookie; 1896 1897 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1898 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1899 else 1900 freq = 0; 1901 1902 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1903 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1904 else 1905 chan_type = 0; 1906 1907 if (tb[NL80211_ATTR_DURATION]) 1908 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1909 else 1910 duration = 0; 1911 1912 if (tb[NL80211_ATTR_COOKIE]) 1913 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1914 else 1915 cookie = 0; 1916 1917 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1918 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1919 cancel_event, freq, chan_type, duration, 1920 (long long unsigned int) cookie, 1921 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1922 1923 if (cookie != drv->remain_on_chan_cookie) 1924 return; /* not for us */ 1925 1926 if (cancel_event) 1927 drv->pending_remain_on_chan = 0; 1928 1929 os_memset(&data, 0, sizeof(data)); 1930 data.remain_on_channel.freq = freq; 1931 data.remain_on_channel.duration = duration; 1932 wpa_supplicant_event(drv->ctx, cancel_event ? 1933 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1934 EVENT_REMAIN_ON_CHANNEL, &data); 1935} 1936 1937 1938static void mlme_event_ft_event(struct wpa_driver_nl80211_data *drv, 1939 struct nlattr *tb[]) 1940{ 1941 union wpa_event_data data; 1942 1943 os_memset(&data, 0, sizeof(data)); 1944 1945 if (tb[NL80211_ATTR_IE]) { 1946 data.ft_ies.ies = nla_data(tb[NL80211_ATTR_IE]); 1947 data.ft_ies.ies_len = nla_len(tb[NL80211_ATTR_IE]); 1948 } 1949 1950 if (tb[NL80211_ATTR_IE_RIC]) { 1951 data.ft_ies.ric_ies = nla_data(tb[NL80211_ATTR_IE_RIC]); 1952 data.ft_ies.ric_ies_len = nla_len(tb[NL80211_ATTR_IE_RIC]); 1953 } 1954 1955 if (tb[NL80211_ATTR_MAC]) 1956 os_memcpy(data.ft_ies.target_ap, 1957 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1958 1959 wpa_printf(MSG_DEBUG, "nl80211: FT event target_ap " MACSTR, 1960 MAC2STR(data.ft_ies.target_ap)); 1961 1962 wpa_supplicant_event(drv->ctx, EVENT_FT_RESPONSE, &data); 1963} 1964 1965 1966static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1967 struct nlattr *tb[]) 1968{ 1969 union wpa_event_data event; 1970 struct nlattr *nl; 1971 int rem; 1972 struct scan_info *info; 1973#define MAX_REPORT_FREQS 50 1974 int freqs[MAX_REPORT_FREQS]; 1975 int num_freqs = 0; 1976 1977 if (drv->scan_for_auth) { 1978 drv->scan_for_auth = 0; 1979 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1980 "cfg80211 BSS entry"); 1981 wpa_driver_nl80211_authenticate_retry(drv); 1982 return; 1983 } 1984 1985 os_memset(&event, 0, sizeof(event)); 1986 info = &event.scan_info; 1987 info->aborted = aborted; 1988 1989 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1990 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1991 struct wpa_driver_scan_ssid *s = 1992 &info->ssids[info->num_ssids]; 1993 s->ssid = nla_data(nl); 1994 s->ssid_len = nla_len(nl); 1995 info->num_ssids++; 1996 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1997 break; 1998 } 1999 } 2000 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 2001 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 2002 { 2003 freqs[num_freqs] = nla_get_u32(nl); 2004 num_freqs++; 2005 if (num_freqs == MAX_REPORT_FREQS - 1) 2006 break; 2007 } 2008 info->freqs = freqs; 2009 info->num_freqs = num_freqs; 2010 } 2011 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 2012} 2013 2014 2015static int get_link_signal(struct nl_msg *msg, void *arg) 2016{ 2017 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2018 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2019 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 2020 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 2021 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 2022 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 }, 2023 }; 2024 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 2025 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 2026 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 2027 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 2028 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 2029 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 2030 }; 2031 struct wpa_signal_info *sig_change = arg; 2032 2033 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2034 genlmsg_attrlen(gnlh, 0), NULL); 2035 if (!tb[NL80211_ATTR_STA_INFO] || 2036 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 2037 tb[NL80211_ATTR_STA_INFO], policy)) 2038 return NL_SKIP; 2039 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 2040 return NL_SKIP; 2041 2042 sig_change->current_signal = 2043 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 2044 2045 if (sinfo[NL80211_STA_INFO_SIGNAL_AVG]) 2046 sig_change->avg_signal = 2047 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]); 2048 else 2049 sig_change->avg_signal = 0; 2050 2051 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 2052 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 2053 sinfo[NL80211_STA_INFO_TX_BITRATE], 2054 rate_policy)) { 2055 sig_change->current_txrate = 0; 2056 } else { 2057 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 2058 sig_change->current_txrate = 2059 nla_get_u16(rinfo[ 2060 NL80211_RATE_INFO_BITRATE]) * 100; 2061 } 2062 } 2063 } 2064 2065 return NL_SKIP; 2066} 2067 2068 2069static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 2070 struct wpa_signal_info *sig) 2071{ 2072 struct nl_msg *msg; 2073 2074 sig->current_signal = -9999; 2075 sig->current_txrate = 0; 2076 2077 msg = nlmsg_alloc(); 2078 if (!msg) 2079 return -ENOMEM; 2080 2081 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 2082 2083 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2084 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 2085 2086 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 2087 nla_put_failure: 2088 nlmsg_free(msg); 2089 return -ENOBUFS; 2090} 2091 2092 2093static int get_link_noise(struct nl_msg *msg, void *arg) 2094{ 2095 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2096 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2097 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 2098 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 2099 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 2100 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 2101 }; 2102 struct wpa_signal_info *sig_change = arg; 2103 2104 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2105 genlmsg_attrlen(gnlh, 0), NULL); 2106 2107 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 2108 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 2109 return NL_SKIP; 2110 } 2111 2112 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 2113 tb[NL80211_ATTR_SURVEY_INFO], 2114 survey_policy)) { 2115 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 2116 "attributes!"); 2117 return NL_SKIP; 2118 } 2119 2120 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 2121 return NL_SKIP; 2122 2123 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 2124 sig_change->frequency) 2125 return NL_SKIP; 2126 2127 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 2128 return NL_SKIP; 2129 2130 sig_change->current_noise = 2131 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 2132 2133 return NL_SKIP; 2134} 2135 2136 2137static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 2138 struct wpa_signal_info *sig_change) 2139{ 2140 struct nl_msg *msg; 2141 2142 sig_change->current_noise = 9999; 2143 sig_change->frequency = drv->assoc_freq; 2144 2145 msg = nlmsg_alloc(); 2146 if (!msg) 2147 return -ENOMEM; 2148 2149 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 2150 2151 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2152 2153 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 2154 nla_put_failure: 2155 nlmsg_free(msg); 2156 return -ENOBUFS; 2157} 2158 2159 2160static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 2161{ 2162 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2163 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2164 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 2165 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 2166 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 2167 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 2168 }; 2169 struct wpa_scan_results *scan_results = arg; 2170 struct wpa_scan_res *scan_res; 2171 size_t i; 2172 2173 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2174 genlmsg_attrlen(gnlh, 0), NULL); 2175 2176 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 2177 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 2178 return NL_SKIP; 2179 } 2180 2181 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 2182 tb[NL80211_ATTR_SURVEY_INFO], 2183 survey_policy)) { 2184 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 2185 "attributes"); 2186 return NL_SKIP; 2187 } 2188 2189 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 2190 return NL_SKIP; 2191 2192 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 2193 return NL_SKIP; 2194 2195 for (i = 0; i < scan_results->num; ++i) { 2196 scan_res = scan_results->res[i]; 2197 if (!scan_res) 2198 continue; 2199 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 2200 scan_res->freq) 2201 continue; 2202 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 2203 continue; 2204 scan_res->noise = (s8) 2205 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 2206 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 2207 } 2208 2209 return NL_SKIP; 2210} 2211 2212 2213static int nl80211_get_noise_for_scan_results( 2214 struct wpa_driver_nl80211_data *drv, 2215 struct wpa_scan_results *scan_res) 2216{ 2217 struct nl_msg *msg; 2218 2219 msg = nlmsg_alloc(); 2220 if (!msg) 2221 return -ENOMEM; 2222 2223 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 2224 2225 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2226 2227 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 2228 scan_res); 2229 nla_put_failure: 2230 nlmsg_free(msg); 2231 return -ENOBUFS; 2232} 2233 2234 2235static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 2236 struct nlattr *tb[]) 2237{ 2238 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 2239 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 2240 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 2241 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 2242 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 2243 }; 2244 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 2245 enum nl80211_cqm_rssi_threshold_event event; 2246 union wpa_event_data ed; 2247 struct wpa_signal_info sig; 2248 int res; 2249 2250 if (tb[NL80211_ATTR_CQM] == NULL || 2251 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 2252 cqm_policy)) { 2253 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 2254 return; 2255 } 2256 2257 os_memset(&ed, 0, sizeof(ed)); 2258 2259 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 2260 if (!tb[NL80211_ATTR_MAC]) 2261 return; 2262 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 2263 ETH_ALEN); 2264 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 2265 return; 2266 } 2267 2268 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 2269 return; 2270 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 2271 2272 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 2273 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 2274 "event: RSSI high"); 2275 ed.signal_change.above_threshold = 1; 2276 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 2277 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 2278 "event: RSSI low"); 2279 ed.signal_change.above_threshold = 0; 2280 } else 2281 return; 2282 2283 res = nl80211_get_link_signal(drv, &sig); 2284 if (res == 0) { 2285 ed.signal_change.current_signal = sig.current_signal; 2286 ed.signal_change.current_txrate = sig.current_txrate; 2287 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 2288 sig.current_signal, sig.current_txrate); 2289 } 2290 2291 res = nl80211_get_link_noise(drv, &sig); 2292 if (res == 0) { 2293 ed.signal_change.current_noise = sig.current_noise; 2294 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 2295 sig.current_noise); 2296 } 2297 2298 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 2299} 2300 2301 2302static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 2303 struct nlattr **tb) 2304{ 2305 u8 *addr; 2306 union wpa_event_data data; 2307 2308 if (tb[NL80211_ATTR_MAC] == NULL) 2309 return; 2310 addr = nla_data(tb[NL80211_ATTR_MAC]); 2311 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 2312 2313 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2314 u8 *ies = NULL; 2315 size_t ies_len = 0; 2316 if (tb[NL80211_ATTR_IE]) { 2317 ies = nla_data(tb[NL80211_ATTR_IE]); 2318 ies_len = nla_len(tb[NL80211_ATTR_IE]); 2319 } 2320 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 2321 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 2322 return; 2323 } 2324 2325 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2326 return; 2327 2328 os_memset(&data, 0, sizeof(data)); 2329 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 2330 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 2331} 2332 2333 2334static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 2335 struct nlattr **tb) 2336{ 2337 u8 *addr; 2338 union wpa_event_data data; 2339 2340 if (tb[NL80211_ATTR_MAC] == NULL) 2341 return; 2342 addr = nla_data(tb[NL80211_ATTR_MAC]); 2343 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 2344 MAC2STR(addr)); 2345 2346 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2347 drv_event_disassoc(drv->ctx, addr); 2348 return; 2349 } 2350 2351 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2352 return; 2353 2354 os_memset(&data, 0, sizeof(data)); 2355 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 2356 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 2357} 2358 2359 2360static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 2361 struct nlattr **tb) 2362{ 2363 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 2364 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 2365 [NL80211_REKEY_DATA_KEK] = { 2366 .minlen = NL80211_KEK_LEN, 2367 .maxlen = NL80211_KEK_LEN, 2368 }, 2369 [NL80211_REKEY_DATA_KCK] = { 2370 .minlen = NL80211_KCK_LEN, 2371 .maxlen = NL80211_KCK_LEN, 2372 }, 2373 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2374 .minlen = NL80211_REPLAY_CTR_LEN, 2375 .maxlen = NL80211_REPLAY_CTR_LEN, 2376 }, 2377 }; 2378 union wpa_event_data data; 2379 2380 if (!tb[NL80211_ATTR_MAC]) 2381 return; 2382 if (!tb[NL80211_ATTR_REKEY_DATA]) 2383 return; 2384 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2385 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2386 return; 2387 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2388 return; 2389 2390 os_memset(&data, 0, sizeof(data)); 2391 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2392 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2393 MAC2STR(data.driver_gtk_rekey.bssid)); 2394 data.driver_gtk_rekey.replay_ctr = 2395 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2396 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2397 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2398 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2399} 2400 2401 2402static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2403 struct nlattr **tb) 2404{ 2405 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2406 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2407 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2408 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2409 .minlen = ETH_ALEN, 2410 .maxlen = ETH_ALEN, 2411 }, 2412 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2413 }; 2414 union wpa_event_data data; 2415 2416 wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event"); 2417 2418 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2419 return; 2420 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2421 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2422 return; 2423 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2424 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2425 return; 2426 2427 os_memset(&data, 0, sizeof(data)); 2428 os_memcpy(data.pmkid_candidate.bssid, 2429 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2430 data.pmkid_candidate.index = 2431 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2432 data.pmkid_candidate.preauth = 2433 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2434 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2435} 2436 2437 2438static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2439 struct nlattr **tb) 2440{ 2441 union wpa_event_data data; 2442 2443 wpa_printf(MSG_DEBUG, "nl80211: Probe client event"); 2444 2445 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2446 return; 2447 2448 os_memset(&data, 0, sizeof(data)); 2449 os_memcpy(data.client_poll.addr, 2450 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2451 2452 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2453} 2454 2455 2456static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv, 2457 struct nlattr **tb) 2458{ 2459 union wpa_event_data data; 2460 2461 wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event"); 2462 2463 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION]) 2464 return; 2465 2466 os_memset(&data, 0, sizeof(data)); 2467 os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2468 switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) { 2469 case NL80211_TDLS_SETUP: 2470 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer " 2471 MACSTR, MAC2STR(data.tdls.peer)); 2472 data.tdls.oper = TDLS_REQUEST_SETUP; 2473 break; 2474 case NL80211_TDLS_TEARDOWN: 2475 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer " 2476 MACSTR, MAC2STR(data.tdls.peer)); 2477 data.tdls.oper = TDLS_REQUEST_TEARDOWN; 2478 break; 2479 default: 2480 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione " 2481 "event"); 2482 return; 2483 } 2484 if (tb[NL80211_ATTR_REASON_CODE]) { 2485 data.tdls.reason_code = 2486 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]); 2487 } 2488 2489 wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data); 2490} 2491 2492 2493static void nl80211_stop_ap(struct wpa_driver_nl80211_data *drv, 2494 struct nlattr **tb) 2495{ 2496 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_UNAVAILABLE, NULL); 2497} 2498 2499 2500static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv, 2501 struct nlattr **tb) 2502{ 2503 union wpa_event_data data; 2504 u32 reason; 2505 2506 wpa_printf(MSG_DEBUG, "nl80211: Connect failed event"); 2507 2508 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON]) 2509 return; 2510 2511 os_memset(&data, 0, sizeof(data)); 2512 os_memcpy(data.connect_failed_reason.addr, 2513 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2514 2515 reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]); 2516 switch (reason) { 2517 case NL80211_CONN_FAIL_MAX_CLIENTS: 2518 wpa_printf(MSG_DEBUG, "nl80211: Max client reached"); 2519 data.connect_failed_reason.code = MAX_CLIENT_REACHED; 2520 break; 2521 case NL80211_CONN_FAIL_BLOCKED_CLIENT: 2522 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR 2523 " tried to connect", 2524 MAC2STR(data.connect_failed_reason.addr)); 2525 data.connect_failed_reason.code = BLOCKED_CLIENT; 2526 break; 2527 default: 2528 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason " 2529 "%u", reason); 2530 return; 2531 } 2532 2533 wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data); 2534} 2535 2536 2537static enum chan_width convert2width(int width); 2538 2539static void nl80211_radar_event(struct wpa_driver_nl80211_data *drv, 2540 struct nlattr **tb) 2541{ 2542 union wpa_event_data data; 2543 enum nl80211_radar_event event_type; 2544 2545 if (!tb[NL80211_ATTR_WIPHY_FREQ] || !tb[NL80211_ATTR_RADAR_EVENT]) 2546 return; 2547 2548 os_memset(&data, 0, sizeof(data)); 2549 data.dfs_event.freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 2550 event_type = nla_get_u32(tb[NL80211_ATTR_RADAR_EVENT]); 2551 2552 /* Check HT params */ 2553 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 2554 data.dfs_event.ht_enabled = 1; 2555 data.dfs_event.chan_offset = 0; 2556 2557 switch (nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])) { 2558 case NL80211_CHAN_NO_HT: 2559 data.dfs_event.ht_enabled = 0; 2560 break; 2561 case NL80211_CHAN_HT20: 2562 break; 2563 case NL80211_CHAN_HT40PLUS: 2564 data.dfs_event.chan_offset = 1; 2565 break; 2566 case NL80211_CHAN_HT40MINUS: 2567 data.dfs_event.chan_offset = -1; 2568 break; 2569 } 2570 } 2571 2572 /* Get VHT params */ 2573 if (tb[NL80211_ATTR_CHANNEL_WIDTH]) 2574 data.dfs_event.chan_width = 2575 convert2width(nla_get_u32( 2576 tb[NL80211_ATTR_CHANNEL_WIDTH])); 2577 if (tb[NL80211_ATTR_CENTER_FREQ1]) 2578 data.dfs_event.cf1 = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]); 2579 if (tb[NL80211_ATTR_CENTER_FREQ2]) 2580 data.dfs_event.cf2 = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]); 2581 2582 wpa_printf(MSG_DEBUG, "nl80211: DFS event on freq %d MHz, ht: %d, offset: %d, width: %d, cf1: %dMHz, cf2: %dMHz", 2583 data.dfs_event.freq, data.dfs_event.ht_enabled, 2584 data.dfs_event.chan_offset, data.dfs_event.chan_width, 2585 data.dfs_event.cf1, data.dfs_event.cf2); 2586 2587 switch (event_type) { 2588 case NL80211_RADAR_DETECTED: 2589 wpa_supplicant_event(drv->ctx, EVENT_DFS_RADAR_DETECTED, &data); 2590 break; 2591 case NL80211_RADAR_CAC_FINISHED: 2592 wpa_supplicant_event(drv->ctx, EVENT_DFS_CAC_FINISHED, &data); 2593 break; 2594 case NL80211_RADAR_CAC_ABORTED: 2595 wpa_supplicant_event(drv->ctx, EVENT_DFS_CAC_ABORTED, &data); 2596 break; 2597 case NL80211_RADAR_NOP_FINISHED: 2598 wpa_supplicant_event(drv->ctx, EVENT_DFS_NOP_FINISHED, &data); 2599 break; 2600 default: 2601 wpa_printf(MSG_DEBUG, "nl80211: Unknown radar event %d " 2602 "received", event_type); 2603 break; 2604 } 2605} 2606 2607 2608static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2609 int wds) 2610{ 2611 struct wpa_driver_nl80211_data *drv = bss->drv; 2612 union wpa_event_data event; 2613 2614 if (!tb[NL80211_ATTR_MAC]) 2615 return; 2616 2617 os_memset(&event, 0, sizeof(event)); 2618 event.rx_from_unknown.bssid = bss->addr; 2619 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2620 event.rx_from_unknown.wds = wds; 2621 2622 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2623} 2624 2625 2626static void do_process_drv_event(struct i802_bss *bss, int cmd, 2627 struct nlattr **tb) 2628{ 2629 struct wpa_driver_nl80211_data *drv = bss->drv; 2630 union wpa_event_data data; 2631 2632 wpa_printf(MSG_DEBUG, "nl80211: Drv Event %d (%s) received for %s", 2633 cmd, nl80211_command_to_string(cmd), bss->ifname); 2634 2635 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2636 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2637 cmd == NL80211_CMD_SCAN_ABORTED)) { 2638 wpa_driver_nl80211_set_mode(drv->first_bss, 2639 drv->ap_scan_as_station); 2640 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2641 } 2642 2643 switch (cmd) { 2644 case NL80211_CMD_TRIGGER_SCAN: 2645 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan trigger"); 2646 drv->scan_state = SCAN_STARTED; 2647 break; 2648 case NL80211_CMD_START_SCHED_SCAN: 2649 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan started"); 2650 drv->scan_state = SCHED_SCAN_STARTED; 2651 break; 2652 case NL80211_CMD_SCHED_SCAN_STOPPED: 2653 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan stopped"); 2654 drv->scan_state = SCHED_SCAN_STOPPED; 2655 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2656 break; 2657 case NL80211_CMD_NEW_SCAN_RESULTS: 2658 wpa_dbg(drv->ctx, MSG_DEBUG, 2659 "nl80211: New scan results available"); 2660 drv->scan_state = SCAN_COMPLETED; 2661 drv->scan_complete_events = 1; 2662 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2663 drv->ctx); 2664 send_scan_event(drv, 0, tb); 2665 break; 2666 case NL80211_CMD_SCHED_SCAN_RESULTS: 2667 wpa_dbg(drv->ctx, MSG_DEBUG, 2668 "nl80211: New sched scan results available"); 2669 drv->scan_state = SCHED_SCAN_RESULTS; 2670 send_scan_event(drv, 0, tb); 2671 break; 2672 case NL80211_CMD_SCAN_ABORTED: 2673 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan aborted"); 2674 drv->scan_state = SCAN_ABORTED; 2675 /* 2676 * Need to indicate that scan results are available in order 2677 * not to make wpa_supplicant stop its scanning. 2678 */ 2679 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2680 drv->ctx); 2681 send_scan_event(drv, 1, tb); 2682 break; 2683 case NL80211_CMD_AUTHENTICATE: 2684 case NL80211_CMD_ASSOCIATE: 2685 case NL80211_CMD_DEAUTHENTICATE: 2686 case NL80211_CMD_DISASSOCIATE: 2687 case NL80211_CMD_FRAME_TX_STATUS: 2688 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2689 case NL80211_CMD_UNPROT_DISASSOCIATE: 2690 mlme_event(bss, cmd, tb[NL80211_ATTR_FRAME], 2691 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2692 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2693 tb[NL80211_ATTR_COOKIE], 2694 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2695 break; 2696 case NL80211_CMD_CONNECT: 2697 case NL80211_CMD_ROAM: 2698 mlme_event_connect(drv, cmd, 2699 tb[NL80211_ATTR_STATUS_CODE], 2700 tb[NL80211_ATTR_MAC], 2701 tb[NL80211_ATTR_REQ_IE], 2702 tb[NL80211_ATTR_RESP_IE]); 2703 break; 2704 case NL80211_CMD_CH_SWITCH_NOTIFY: 2705 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ], 2706 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2707 break; 2708 case NL80211_CMD_DISCONNECT: 2709 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2710 tb[NL80211_ATTR_MAC], 2711 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2712 break; 2713 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2714 mlme_event_michael_mic_failure(bss, tb); 2715 break; 2716 case NL80211_CMD_JOIN_IBSS: 2717 mlme_event_join_ibss(drv, tb); 2718 break; 2719 case NL80211_CMD_REMAIN_ON_CHANNEL: 2720 mlme_event_remain_on_channel(drv, 0, tb); 2721 break; 2722 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2723 mlme_event_remain_on_channel(drv, 1, tb); 2724 break; 2725 case NL80211_CMD_NOTIFY_CQM: 2726 nl80211_cqm_event(drv, tb); 2727 break; 2728 case NL80211_CMD_REG_CHANGE: 2729 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2730 if (tb[NL80211_ATTR_REG_INITIATOR] == NULL) 2731 break; 2732 os_memset(&data, 0, sizeof(data)); 2733 switch (nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR])) { 2734 case NL80211_REGDOM_SET_BY_CORE: 2735 data.channel_list_changed.initiator = 2736 REGDOM_SET_BY_CORE; 2737 break; 2738 case NL80211_REGDOM_SET_BY_USER: 2739 data.channel_list_changed.initiator = 2740 REGDOM_SET_BY_USER; 2741 break; 2742 case NL80211_REGDOM_SET_BY_DRIVER: 2743 data.channel_list_changed.initiator = 2744 REGDOM_SET_BY_DRIVER; 2745 break; 2746 case NL80211_REGDOM_SET_BY_COUNTRY_IE: 2747 data.channel_list_changed.initiator = 2748 REGDOM_SET_BY_COUNTRY_IE; 2749 break; 2750 default: 2751 wpa_printf(MSG_DEBUG, "nl80211: Unknown reg change initiator %d received", 2752 nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR])); 2753 break; 2754 } 2755 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2756 &data); 2757 break; 2758 case NL80211_CMD_REG_BEACON_HINT: 2759 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2760 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2761 NULL); 2762 break; 2763 case NL80211_CMD_NEW_STATION: 2764 nl80211_new_station_event(drv, tb); 2765 break; 2766 case NL80211_CMD_DEL_STATION: 2767 nl80211_del_station_event(drv, tb); 2768 break; 2769 case NL80211_CMD_SET_REKEY_OFFLOAD: 2770 nl80211_rekey_offload_event(drv, tb); 2771 break; 2772 case NL80211_CMD_PMKSA_CANDIDATE: 2773 nl80211_pmksa_candidate_event(drv, tb); 2774 break; 2775 case NL80211_CMD_PROBE_CLIENT: 2776 nl80211_client_probe_event(drv, tb); 2777 break; 2778 case NL80211_CMD_TDLS_OPER: 2779 nl80211_tdls_oper_event(drv, tb); 2780 break; 2781 case NL80211_CMD_CONN_FAILED: 2782 nl80211_connect_failed_event(drv, tb); 2783 break; 2784 case NL80211_CMD_FT_EVENT: 2785 mlme_event_ft_event(drv, tb); 2786 break; 2787 case NL80211_CMD_RADAR_DETECT: 2788 nl80211_radar_event(drv, tb); 2789 break; 2790 case NL80211_CMD_STOP_AP: 2791 nl80211_stop_ap(drv, tb); 2792 break; 2793 default: 2794 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event " 2795 "(cmd=%d)", cmd); 2796 break; 2797 } 2798} 2799 2800 2801static int process_drv_event(struct nl_msg *msg, void *arg) 2802{ 2803 struct wpa_driver_nl80211_data *drv = arg; 2804 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2805 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2806 struct i802_bss *bss; 2807 int ifidx = -1; 2808 2809 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2810 genlmsg_attrlen(gnlh, 0), NULL); 2811 2812 if (tb[NL80211_ATTR_IFINDEX]) { 2813 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2814 2815 for (bss = drv->first_bss; bss; bss = bss->next) 2816 if (ifidx == -1 || ifidx == bss->ifindex) { 2817 do_process_drv_event(bss, gnlh->cmd, tb); 2818 return NL_SKIP; 2819 } 2820 wpa_printf(MSG_DEBUG, 2821 "nl80211: Ignored event (cmd=%d) for foreign interface (ifindex %d)", 2822 gnlh->cmd, ifidx); 2823 } else if (tb[NL80211_ATTR_WDEV]) { 2824 u64 wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]); 2825 wpa_printf(MSG_DEBUG, "nl80211: Process event on P2P device"); 2826 for (bss = drv->first_bss; bss; bss = bss->next) { 2827 if (bss->wdev_id_set && wdev_id == bss->wdev_id) { 2828 do_process_drv_event(bss, gnlh->cmd, tb); 2829 return NL_SKIP; 2830 } 2831 } 2832 wpa_printf(MSG_DEBUG, 2833 "nl80211: Ignored event (cmd=%d) for foreign interface (wdev 0x%llx)", 2834 gnlh->cmd, (long long unsigned int) wdev_id); 2835 } 2836 2837 return NL_SKIP; 2838} 2839 2840 2841static int process_global_event(struct nl_msg *msg, void *arg) 2842{ 2843 struct nl80211_global *global = arg; 2844 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2845 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2846 struct wpa_driver_nl80211_data *drv, *tmp; 2847 int ifidx = -1; 2848 struct i802_bss *bss; 2849 u64 wdev_id = 0; 2850 int wdev_id_set = 0; 2851 2852 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2853 genlmsg_attrlen(gnlh, 0), NULL); 2854 2855 if (tb[NL80211_ATTR_IFINDEX]) 2856 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2857 else if (tb[NL80211_ATTR_WDEV]) { 2858 wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]); 2859 wdev_id_set = 1; 2860 } 2861 2862 dl_list_for_each_safe(drv, tmp, &global->interfaces, 2863 struct wpa_driver_nl80211_data, list) { 2864 for (bss = drv->first_bss; bss; bss = bss->next) { 2865 if ((ifidx == -1 && !wdev_id_set) || 2866 ifidx == bss->ifindex || 2867 (wdev_id_set && bss->wdev_id_set && 2868 wdev_id == bss->wdev_id)) { 2869 do_process_drv_event(bss, gnlh->cmd, tb); 2870 return NL_SKIP; 2871 } 2872 } 2873 } 2874 2875 return NL_SKIP; 2876} 2877 2878 2879static int process_bss_event(struct nl_msg *msg, void *arg) 2880{ 2881 struct i802_bss *bss = arg; 2882 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2883 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2884 2885 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2886 genlmsg_attrlen(gnlh, 0), NULL); 2887 2888 wpa_printf(MSG_DEBUG, "nl80211: BSS Event %d (%s) received for %s", 2889 gnlh->cmd, nl80211_command_to_string(gnlh->cmd), 2890 bss->ifname); 2891 2892 switch (gnlh->cmd) { 2893 case NL80211_CMD_FRAME: 2894 case NL80211_CMD_FRAME_TX_STATUS: 2895 mlme_event(bss, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2896 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2897 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2898 tb[NL80211_ATTR_COOKIE], 2899 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 2900 break; 2901 case NL80211_CMD_UNEXPECTED_FRAME: 2902 nl80211_spurious_frame(bss, tb, 0); 2903 break; 2904 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2905 nl80211_spurious_frame(bss, tb, 1); 2906 break; 2907 default: 2908 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2909 "(cmd=%d)", gnlh->cmd); 2910 break; 2911 } 2912 2913 return NL_SKIP; 2914} 2915 2916 2917static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2918 void *handle) 2919{ 2920 struct nl_cb *cb = eloop_ctx; 2921 int res; 2922 2923 wpa_printf(MSG_MSGDUMP, "nl80211: Event message available"); 2924 2925 res = nl_recvmsgs(handle, cb); 2926 if (res) { 2927 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d", 2928 __func__, res); 2929 } 2930} 2931 2932 2933/** 2934 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2935 * @priv: driver_nl80211 private data 2936 * @alpha2_arg: country to which to switch to 2937 * Returns: 0 on success, -1 on failure 2938 * 2939 * This asks nl80211 to set the regulatory domain for given 2940 * country ISO / IEC alpha2. 2941 */ 2942static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2943{ 2944 struct i802_bss *bss = priv; 2945 struct wpa_driver_nl80211_data *drv = bss->drv; 2946 char alpha2[3]; 2947 struct nl_msg *msg; 2948 2949 msg = nlmsg_alloc(); 2950 if (!msg) 2951 return -ENOMEM; 2952 2953 alpha2[0] = alpha2_arg[0]; 2954 alpha2[1] = alpha2_arg[1]; 2955 alpha2[2] = '\0'; 2956 2957 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2958 2959 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2960 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2961 return -EINVAL; 2962 return 0; 2963nla_put_failure: 2964 nlmsg_free(msg); 2965 return -EINVAL; 2966} 2967 2968 2969static int nl80211_get_country(struct nl_msg *msg, void *arg) 2970{ 2971 char *alpha2 = arg; 2972 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 2973 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2974 2975 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2976 genlmsg_attrlen(gnlh, 0), NULL); 2977 if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) { 2978 wpa_printf(MSG_DEBUG, "nl80211: No country information available"); 2979 return NL_SKIP; 2980 } 2981 os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3); 2982 return NL_SKIP; 2983} 2984 2985 2986static int wpa_driver_nl80211_get_country(void *priv, char *alpha2) 2987{ 2988 struct i802_bss *bss = priv; 2989 struct wpa_driver_nl80211_data *drv = bss->drv; 2990 struct nl_msg *msg; 2991 int ret; 2992 2993 msg = nlmsg_alloc(); 2994 if (!msg) 2995 return -ENOMEM; 2996 2997 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 2998 alpha2[0] = '\0'; 2999 ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2); 3000 if (!alpha2[0]) 3001 ret = -1; 3002 3003 return ret; 3004} 3005 3006 3007static int protocol_feature_handler(struct nl_msg *msg, void *arg) 3008{ 3009 u32 *feat = arg; 3010 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 3011 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3012 3013 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3014 genlmsg_attrlen(gnlh, 0), NULL); 3015 3016 if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]) 3017 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]); 3018 3019 return NL_SKIP; 3020} 3021 3022 3023static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv) 3024{ 3025 u32 feat = 0; 3026 struct nl_msg *msg; 3027 3028 msg = nlmsg_alloc(); 3029 if (!msg) 3030 goto nla_put_failure; 3031 3032 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES); 3033 if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0) 3034 return feat; 3035 3036 msg = NULL; 3037nla_put_failure: 3038 nlmsg_free(msg); 3039 return 0; 3040} 3041 3042 3043struct wiphy_info_data { 3044 struct wpa_driver_nl80211_data *drv; 3045 struct wpa_driver_capa *capa; 3046 3047 unsigned int num_multichan_concurrent; 3048 3049 unsigned int error:1; 3050 unsigned int device_ap_sme:1; 3051 unsigned int poll_command_supported:1; 3052 unsigned int data_tx_status:1; 3053 unsigned int monitor_supported:1; 3054 unsigned int auth_supported:1; 3055 unsigned int connect_supported:1; 3056 unsigned int p2p_go_supported:1; 3057 unsigned int p2p_client_supported:1; 3058 unsigned int p2p_concurrent:1; 3059 unsigned int channel_switch_supported:1; 3060}; 3061 3062 3063static unsigned int probe_resp_offload_support(int supp_protocols) 3064{ 3065 unsigned int prot = 0; 3066 3067 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 3068 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 3069 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 3070 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 3071 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 3072 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 3073 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 3074 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 3075 3076 return prot; 3077} 3078 3079 3080static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, 3081 struct nlattr *tb) 3082{ 3083 struct nlattr *nl_mode; 3084 int i; 3085 3086 if (tb == NULL) 3087 return; 3088 3089 nla_for_each_nested(nl_mode, tb, i) { 3090 switch (nla_type(nl_mode)) { 3091 case NL80211_IFTYPE_AP: 3092 info->capa->flags |= WPA_DRIVER_FLAGS_AP; 3093 break; 3094 case NL80211_IFTYPE_ADHOC: 3095 info->capa->flags |= WPA_DRIVER_FLAGS_IBSS; 3096 break; 3097 case NL80211_IFTYPE_P2P_DEVICE: 3098 info->capa->flags |= 3099 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE; 3100 break; 3101 case NL80211_IFTYPE_P2P_GO: 3102 info->p2p_go_supported = 1; 3103 break; 3104 case NL80211_IFTYPE_P2P_CLIENT: 3105 info->p2p_client_supported = 1; 3106 break; 3107 case NL80211_IFTYPE_MONITOR: 3108 info->monitor_supported = 1; 3109 break; 3110 } 3111 } 3112} 3113 3114 3115static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, 3116 struct nlattr *nl_combi) 3117{ 3118 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 3119 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 3120 struct nlattr *nl_limit, *nl_mode; 3121 int err, rem_limit, rem_mode; 3122 int combination_has_p2p = 0, combination_has_mgd = 0; 3123 static struct nla_policy 3124 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 3125 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 3126 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 3127 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 3128 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 3129 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 }, 3130 }, 3131 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 3132 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 3133 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 3134 }; 3135 3136 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 3137 nl_combi, iface_combination_policy); 3138 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 3139 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 3140 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 3141 return 0; /* broken combination */ 3142 3143 if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS]) 3144 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR; 3145 3146 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], 3147 rem_limit) { 3148 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, 3149 nl_limit, iface_limit_policy); 3150 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 3151 return 0; /* broken combination */ 3152 3153 nla_for_each_nested(nl_mode, 3154 tb_limit[NL80211_IFACE_LIMIT_TYPES], 3155 rem_mode) { 3156 int ift = nla_type(nl_mode); 3157 if (ift == NL80211_IFTYPE_P2P_GO || 3158 ift == NL80211_IFTYPE_P2P_CLIENT) 3159 combination_has_p2p = 1; 3160 if (ift == NL80211_IFTYPE_STATION) 3161 combination_has_mgd = 1; 3162 } 3163 if (combination_has_p2p && combination_has_mgd) 3164 break; 3165 } 3166 3167 if (combination_has_p2p && combination_has_mgd) { 3168 info->p2p_concurrent = 1; 3169 info->num_multichan_concurrent = 3170 nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]); 3171 return 1; 3172 } 3173 3174 return 0; 3175} 3176 3177 3178static void wiphy_info_iface_comb(struct wiphy_info_data *info, 3179 struct nlattr *tb) 3180{ 3181 struct nlattr *nl_combi; 3182 int rem_combi; 3183 3184 if (tb == NULL) 3185 return; 3186 3187 nla_for_each_nested(nl_combi, tb, rem_combi) { 3188 if (wiphy_info_iface_comb_process(info, nl_combi) > 0) 3189 break; 3190 } 3191} 3192 3193 3194static void wiphy_info_supp_cmds(struct wiphy_info_data *info, 3195 struct nlattr *tb) 3196{ 3197 struct nlattr *nl_cmd; 3198 int i; 3199 3200 if (tb == NULL) 3201 return; 3202 3203 nla_for_each_nested(nl_cmd, tb, i) { 3204 switch (nla_get_u32(nl_cmd)) { 3205 case NL80211_CMD_AUTHENTICATE: 3206 info->auth_supported = 1; 3207 break; 3208 case NL80211_CMD_CONNECT: 3209 info->connect_supported = 1; 3210 break; 3211 case NL80211_CMD_START_SCHED_SCAN: 3212 info->capa->sched_scan_supported = 1; 3213 break; 3214 case NL80211_CMD_PROBE_CLIENT: 3215 info->poll_command_supported = 1; 3216 break; 3217 case NL80211_CMD_CHANNEL_SWITCH: 3218 info->channel_switch_supported = 1; 3219 break; 3220 } 3221 } 3222} 3223 3224 3225static void wiphy_info_max_roc(struct wpa_driver_capa *capa, 3226 struct nlattr *tb) 3227{ 3228 if (tb) 3229 capa->max_remain_on_chan = nla_get_u32(tb); 3230} 3231 3232 3233static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, 3234 struct nlattr *ext_setup) 3235{ 3236 if (tdls == NULL) 3237 return; 3238 3239 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 3240 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 3241 3242 if (ext_setup) { 3243 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 3244 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 3245 } 3246} 3247 3248 3249static void wiphy_info_feature_flags(struct wiphy_info_data *info, 3250 struct nlattr *tb) 3251{ 3252 u32 flags; 3253 struct wpa_driver_capa *capa = info->capa; 3254 3255 if (tb == NULL) 3256 return; 3257 3258 flags = nla_get_u32(tb); 3259 3260 if (flags & NL80211_FEATURE_SK_TX_STATUS) 3261 info->data_tx_status = 1; 3262 3263 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 3264 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 3265 3266 if (flags & NL80211_FEATURE_SAE) 3267 capa->flags |= WPA_DRIVER_FLAGS_SAE; 3268 3269 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 3270 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 3271} 3272 3273 3274static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, 3275 struct nlattr *tb) 3276{ 3277 u32 protocols; 3278 3279 if (tb == NULL) 3280 return; 3281 3282 protocols = nla_get_u32(tb); 3283 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " 3284 "mode"); 3285 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 3286 capa->probe_resp_offloads = probe_resp_offload_support(protocols); 3287} 3288 3289 3290static int wiphy_info_handler(struct nl_msg *msg, void *arg) 3291{ 3292 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 3293 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3294 struct wiphy_info_data *info = arg; 3295 struct wpa_driver_capa *capa = info->capa; 3296 struct wpa_driver_nl80211_data *drv = info->drv; 3297 3298 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3299 genlmsg_attrlen(gnlh, 0), NULL); 3300 3301 if (tb[NL80211_ATTR_WIPHY_NAME]) 3302 os_strlcpy(drv->phyname, 3303 nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]), 3304 sizeof(drv->phyname)); 3305 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 3306 capa->max_scan_ssids = 3307 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 3308 3309 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 3310 capa->max_sched_scan_ssids = 3311 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 3312 3313 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 3314 capa->max_match_sets = 3315 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 3316 3317 if (tb[NL80211_ATTR_MAC_ACL_MAX]) 3318 capa->max_acl_mac_addrs = 3319 nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]); 3320 3321 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); 3322 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); 3323 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); 3324 3325 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 3326 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 3327 "off-channel TX"); 3328 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 3329 } 3330 3331 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 3332 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 3333 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 3334 } 3335 3336 wiphy_info_max_roc(capa, 3337 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 3338 3339 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 3340 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 3341 3342 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], 3343 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); 3344 3345 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 3346 info->device_ap_sme = 1; 3347 3348 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); 3349 wiphy_info_probe_resp_offload(capa, 3350 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 3351 3352 if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] && 3353 drv->extended_capa == NULL) { 3354 drv->extended_capa = 3355 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 3356 if (drv->extended_capa) { 3357 os_memcpy(drv->extended_capa, 3358 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 3359 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 3360 drv->extended_capa_len = 3361 nla_len(tb[NL80211_ATTR_EXT_CAPA]); 3362 } 3363 drv->extended_capa_mask = 3364 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 3365 if (drv->extended_capa_mask) { 3366 os_memcpy(drv->extended_capa_mask, 3367 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 3368 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 3369 } else { 3370 os_free(drv->extended_capa); 3371 drv->extended_capa = NULL; 3372 drv->extended_capa_len = 0; 3373 } 3374 } 3375 3376 return NL_SKIP; 3377} 3378 3379 3380static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 3381 struct wiphy_info_data *info) 3382{ 3383 u32 feat; 3384 struct nl_msg *msg; 3385 3386 os_memset(info, 0, sizeof(*info)); 3387 info->capa = &drv->capa; 3388 info->drv = drv; 3389 3390 msg = nlmsg_alloc(); 3391 if (!msg) 3392 return -1; 3393 3394 feat = get_nl80211_protocol_features(drv); 3395 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 3396 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 3397 else 3398 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 3399 3400 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 3401 if (nl80211_set_iface_id(msg, drv->first_bss) < 0) 3402 goto nla_put_failure; 3403 3404 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 3405 return -1; 3406 3407 if (info->auth_supported) 3408 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 3409 else if (!info->connect_supported) { 3410 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 3411 "authentication/association or connect commands"); 3412 info->error = 1; 3413 } 3414 3415 if (info->p2p_go_supported && info->p2p_client_supported) 3416 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 3417 if (info->p2p_concurrent) { 3418 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 3419 "interface (driver advertised support)"); 3420 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 3421 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 3422 } 3423 if (info->num_multichan_concurrent > 1) { 3424 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 3425 "concurrent (driver advertised support)"); 3426 drv->capa.num_multichan_concurrent = 3427 info->num_multichan_concurrent; 3428 } 3429 3430 /* default to 5000 since early versions of mac80211 don't set it */ 3431 if (!drv->capa.max_remain_on_chan) 3432 drv->capa.max_remain_on_chan = 5000; 3433 3434 return 0; 3435nla_put_failure: 3436 nlmsg_free(msg); 3437 return -1; 3438} 3439 3440 3441static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 3442{ 3443 struct wiphy_info_data info; 3444 if (wpa_driver_nl80211_get_info(drv, &info)) 3445 return -1; 3446 3447 if (info.error) 3448 return -1; 3449 3450 drv->has_capability = 1; 3451 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 3452 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 3453 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 3454 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 3455 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 3456 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 3457 WPA_DRIVER_CAPA_ENC_WEP104 | 3458 WPA_DRIVER_CAPA_ENC_TKIP | 3459 WPA_DRIVER_CAPA_ENC_CCMP; 3460 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 3461 WPA_DRIVER_AUTH_SHARED | 3462 WPA_DRIVER_AUTH_LEAP; 3463 3464 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 3465 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 3466 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3467 3468 if (!info.device_ap_sme) { 3469 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 3470 3471 /* 3472 * No AP SME is currently assumed to also indicate no AP MLME 3473 * in the driver/firmware. 3474 */ 3475 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 3476 } 3477 3478 drv->device_ap_sme = info.device_ap_sme; 3479 drv->poll_command_supported = info.poll_command_supported; 3480 drv->data_tx_status = info.data_tx_status; 3481 drv->channel_switch_supported = info.channel_switch_supported; 3482 3483 /* 3484 * If poll command and tx status are supported, mac80211 is new enough 3485 * to have everything we need to not need monitor interfaces. 3486 */ 3487 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 3488 3489 if (drv->device_ap_sme && drv->use_monitor) { 3490 /* 3491 * Non-mac80211 drivers may not support monitor interface. 3492 * Make sure we do not get stuck with incorrect capability here 3493 * by explicitly testing this. 3494 */ 3495 if (!info.monitor_supported) { 3496 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 3497 "with device_ap_sme since no monitor mode " 3498 "support detected"); 3499 drv->use_monitor = 0; 3500 } 3501 } 3502 3503 /* 3504 * If we aren't going to use monitor interfaces, but the 3505 * driver doesn't support data TX status, we won't get TX 3506 * status for EAPOL frames. 3507 */ 3508 if (!drv->use_monitor && !info.data_tx_status) 3509 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3510 3511 return 0; 3512} 3513 3514 3515#ifdef ANDROID 3516static int android_genl_ctrl_resolve(struct nl_handle *handle, 3517 const char *name) 3518{ 3519 /* 3520 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 3521 * need to work around that. 3522 */ 3523 struct nl_cache *cache = NULL; 3524 struct genl_family *nl80211 = NULL; 3525 int id = -1; 3526 3527 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 3528 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 3529 "netlink cache"); 3530 goto fail; 3531 } 3532 3533 nl80211 = genl_ctrl_search_by_name(cache, name); 3534 if (nl80211 == NULL) 3535 goto fail; 3536 3537 id = genl_family_get_id(nl80211); 3538 3539fail: 3540 if (nl80211) 3541 genl_family_put(nl80211); 3542 if (cache) 3543 nl_cache_free(cache); 3544 3545 return id; 3546} 3547#define genl_ctrl_resolve android_genl_ctrl_resolve 3548#endif /* ANDROID */ 3549 3550 3551static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 3552{ 3553 int ret; 3554 3555 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3556 if (global->nl_cb == NULL) { 3557 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 3558 "callbacks"); 3559 return -1; 3560 } 3561 3562 global->nl = nl_create_handle(global->nl_cb, "nl"); 3563 if (global->nl == NULL) 3564 goto err; 3565 3566 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 3567 if (global->nl80211_id < 0) { 3568 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 3569 "found"); 3570 goto err; 3571 } 3572 3573 global->nl_event = nl_create_handle(global->nl_cb, "event"); 3574 if (global->nl_event == NULL) 3575 goto err; 3576 3577 ret = nl_get_multicast_id(global, "nl80211", "scan"); 3578 if (ret >= 0) 3579 ret = nl_socket_add_membership(global->nl_event, ret); 3580 if (ret < 0) { 3581 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3582 "membership for scan events: %d (%s)", 3583 ret, strerror(-ret)); 3584 goto err; 3585 } 3586 3587 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 3588 if (ret >= 0) 3589 ret = nl_socket_add_membership(global->nl_event, ret); 3590 if (ret < 0) { 3591 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 3592 "membership for mlme events: %d (%s)", 3593 ret, strerror(-ret)); 3594 goto err; 3595 } 3596 3597 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 3598 if (ret >= 0) 3599 ret = nl_socket_add_membership(global->nl_event, ret); 3600 if (ret < 0) { 3601 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 3602 "membership for regulatory events: %d (%s)", 3603 ret, strerror(-ret)); 3604 /* Continue without regulatory events */ 3605 } 3606 3607 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3608 no_seq_check, NULL); 3609 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3610 process_global_event, global); 3611 3612 nl80211_register_eloop_read(&global->nl_event, 3613 wpa_driver_nl80211_event_receive, 3614 global->nl_cb); 3615 3616 return 0; 3617 3618err: 3619 nl_destroy_handles(&global->nl_event); 3620 nl_destroy_handles(&global->nl); 3621 nl_cb_put(global->nl_cb); 3622 global->nl_cb = NULL; 3623 return -1; 3624} 3625 3626 3627static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 3628{ 3629 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3630 if (!drv->nl_cb) { 3631 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 3632 return -1; 3633 } 3634 3635 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3636 no_seq_check, NULL); 3637 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3638 process_drv_event, drv); 3639 3640 return 0; 3641} 3642 3643 3644static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 3645{ 3646 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 3647 /* 3648 * This may be for any interface; use ifdown event to disable 3649 * interface. 3650 */ 3651} 3652 3653 3654static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 3655{ 3656 struct wpa_driver_nl80211_data *drv = ctx; 3657 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 3658 if (i802_set_iface_flags(drv->first_bss, 1)) { 3659 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 3660 "after rfkill unblock"); 3661 return; 3662 } 3663 /* rtnetlink ifup handler will report interface as enabled */ 3664} 3665 3666 3667static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 3668 void *eloop_ctx, 3669 void *handle) 3670{ 3671 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3672 u8 data[2048]; 3673 struct msghdr msg; 3674 struct iovec entry; 3675 u8 control[512]; 3676 struct cmsghdr *cmsg; 3677 int res, found_ee = 0, found_wifi = 0, acked = 0; 3678 union wpa_event_data event; 3679 3680 memset(&msg, 0, sizeof(msg)); 3681 msg.msg_iov = &entry; 3682 msg.msg_iovlen = 1; 3683 entry.iov_base = data; 3684 entry.iov_len = sizeof(data); 3685 msg.msg_control = &control; 3686 msg.msg_controllen = sizeof(control); 3687 3688 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 3689 /* if error or not fitting 802.3 header, return */ 3690 if (res < 14) 3691 return; 3692 3693 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 3694 { 3695 if (cmsg->cmsg_level == SOL_SOCKET && 3696 cmsg->cmsg_type == SCM_WIFI_STATUS) { 3697 int *ack; 3698 3699 found_wifi = 1; 3700 ack = (void *)CMSG_DATA(cmsg); 3701 acked = *ack; 3702 } 3703 3704 if (cmsg->cmsg_level == SOL_PACKET && 3705 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 3706 struct sock_extended_err *err = 3707 (struct sock_extended_err *)CMSG_DATA(cmsg); 3708 3709 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 3710 found_ee = 1; 3711 } 3712 } 3713 3714 if (!found_ee || !found_wifi) 3715 return; 3716 3717 memset(&event, 0, sizeof(event)); 3718 event.eapol_tx_status.dst = data; 3719 event.eapol_tx_status.data = data + 14; 3720 event.eapol_tx_status.data_len = res - 14; 3721 event.eapol_tx_status.ack = acked; 3722 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 3723} 3724 3725 3726static int nl80211_init_bss(struct i802_bss *bss) 3727{ 3728 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 3729 if (!bss->nl_cb) 3730 return -1; 3731 3732 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 3733 no_seq_check, NULL); 3734 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 3735 process_bss_event, bss); 3736 3737 return 0; 3738} 3739 3740 3741static void nl80211_destroy_bss(struct i802_bss *bss) 3742{ 3743 nl_cb_put(bss->nl_cb); 3744 bss->nl_cb = NULL; 3745} 3746 3747 3748static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname, 3749 void *global_priv, int hostapd, 3750 const u8 *set_addr) 3751{ 3752 struct wpa_driver_nl80211_data *drv; 3753 struct rfkill_config *rcfg; 3754 struct i802_bss *bss; 3755 3756 if (global_priv == NULL) 3757 return NULL; 3758 drv = os_zalloc(sizeof(*drv)); 3759 if (drv == NULL) 3760 return NULL; 3761 drv->global = global_priv; 3762 drv->ctx = ctx; 3763 drv->hostapd = !!hostapd; 3764 drv->eapol_sock = -1; 3765 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 3766 drv->if_indices = drv->default_if_indices; 3767 3768 drv->first_bss = os_zalloc(sizeof(*drv->first_bss)); 3769 if (!drv->first_bss) { 3770 os_free(drv); 3771 return NULL; 3772 } 3773 bss = drv->first_bss; 3774 bss->drv = drv; 3775 bss->ctx = ctx; 3776 3777 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 3778 drv->monitor_ifidx = -1; 3779 drv->monitor_sock = -1; 3780 drv->eapol_tx_sock = -1; 3781 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3782 3783 if (wpa_driver_nl80211_init_nl(drv)) { 3784 os_free(drv); 3785 return NULL; 3786 } 3787 3788 if (nl80211_init_bss(bss)) 3789 goto failed; 3790 3791 rcfg = os_zalloc(sizeof(*rcfg)); 3792 if (rcfg == NULL) 3793 goto failed; 3794 rcfg->ctx = drv; 3795 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 3796 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 3797 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 3798 drv->rfkill = rfkill_init(rcfg); 3799 if (drv->rfkill == NULL) { 3800 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 3801 os_free(rcfg); 3802 } 3803 3804 if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0) 3805 drv->start_iface_up = 1; 3806 3807 if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1)) 3808 goto failed; 3809 3810 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 3811 if (drv->eapol_tx_sock < 0) 3812 goto failed; 3813 3814 if (drv->data_tx_status) { 3815 int enabled = 1; 3816 3817 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 3818 &enabled, sizeof(enabled)) < 0) { 3819 wpa_printf(MSG_DEBUG, 3820 "nl80211: wifi status sockopt failed\n"); 3821 drv->data_tx_status = 0; 3822 if (!drv->use_monitor) 3823 drv->capa.flags &= 3824 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 3825 } else { 3826 eloop_register_read_sock(drv->eapol_tx_sock, 3827 wpa_driver_nl80211_handle_eapol_tx_status, 3828 drv, NULL); 3829 } 3830 } 3831 3832 if (drv->global) { 3833 dl_list_add(&drv->global->interfaces, &drv->list); 3834 drv->in_interface_list = 1; 3835 } 3836 3837 return bss; 3838 3839failed: 3840 wpa_driver_nl80211_deinit(bss); 3841 return NULL; 3842} 3843 3844 3845/** 3846 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 3847 * @ctx: context to be used when calling wpa_supplicant functions, 3848 * e.g., wpa_supplicant_event() 3849 * @ifname: interface name, e.g., wlan0 3850 * @global_priv: private driver global data from global_init() 3851 * Returns: Pointer to private data, %NULL on failure 3852 */ 3853static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 3854 void *global_priv) 3855{ 3856 return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL); 3857} 3858 3859 3860static int nl80211_register_frame(struct i802_bss *bss, 3861 struct nl_handle *nl_handle, 3862 u16 type, const u8 *match, size_t match_len) 3863{ 3864 struct wpa_driver_nl80211_data *drv = bss->drv; 3865 struct nl_msg *msg; 3866 int ret = -1; 3867 3868 msg = nlmsg_alloc(); 3869 if (!msg) 3870 return -1; 3871 3872 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 3873 type, nl_handle); 3874 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3875 match, match_len); 3876 3877 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 3878 3879 if (nl80211_set_iface_id(msg, bss) < 0) 3880 goto nla_put_failure; 3881 3882 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 3883 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 3884 3885 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 3886 msg = NULL; 3887 if (ret) { 3888 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3889 "failed (type=%u): ret=%d (%s)", 3890 type, ret, strerror(-ret)); 3891 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3892 match, match_len); 3893 goto nla_put_failure; 3894 } 3895 ret = 0; 3896nla_put_failure: 3897 nlmsg_free(msg); 3898 return ret; 3899} 3900 3901 3902static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3903{ 3904 struct wpa_driver_nl80211_data *drv = bss->drv; 3905 3906 if (bss->nl_mgmt) { 3907 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3908 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3909 return -1; 3910 } 3911 3912 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3913 if (bss->nl_mgmt == NULL) 3914 return -1; 3915 3916 return 0; 3917} 3918 3919 3920static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss) 3921{ 3922 nl80211_register_eloop_read(&bss->nl_mgmt, 3923 wpa_driver_nl80211_event_receive, 3924 bss->nl_cb); 3925} 3926 3927 3928static int nl80211_register_action_frame(struct i802_bss *bss, 3929 const u8 *match, size_t match_len) 3930{ 3931 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3932 return nl80211_register_frame(bss, bss->nl_mgmt, 3933 type, match, match_len); 3934} 3935 3936 3937static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3938{ 3939 struct wpa_driver_nl80211_data *drv = bss->drv; 3940 3941 if (nl80211_alloc_mgmt_handle(bss)) 3942 return -1; 3943 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3944 "handle %p", bss->nl_mgmt); 3945 3946 if (drv->nlmode == NL80211_IFTYPE_ADHOC) { 3947 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4); 3948 3949 /* register for any AUTH message */ 3950 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0); 3951 } 3952 3953#ifdef CONFIG_INTERWORKING 3954 /* QoS Map Configure */ 3955 if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0) 3956 return -1; 3957#endif /* CONFIG_INTERWORKING */ 3958#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3959 /* GAS Initial Request */ 3960 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3961 return -1; 3962 /* GAS Initial Response */ 3963 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3964 return -1; 3965 /* GAS Comeback Request */ 3966 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3967 return -1; 3968 /* GAS Comeback Response */ 3969 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3970 return -1; 3971#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3972#ifdef CONFIG_P2P 3973 /* P2P Public Action */ 3974 if (nl80211_register_action_frame(bss, 3975 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3976 6) < 0) 3977 return -1; 3978 /* P2P Action */ 3979 if (nl80211_register_action_frame(bss, 3980 (u8 *) "\x7f\x50\x6f\x9a\x09", 3981 5) < 0) 3982 return -1; 3983#endif /* CONFIG_P2P */ 3984#ifdef CONFIG_IEEE80211W 3985 /* SA Query Response */ 3986 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3987 return -1; 3988#endif /* CONFIG_IEEE80211W */ 3989#ifdef CONFIG_TDLS 3990 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3991 /* TDLS Discovery Response */ 3992 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3993 0) 3994 return -1; 3995 } 3996#endif /* CONFIG_TDLS */ 3997 3998 /* FT Action frames */ 3999 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 4000 return -1; 4001 else 4002 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 4003 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 4004 4005 /* WNM - BSS Transition Management Request */ 4006 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 4007 return -1; 4008 /* WNM-Sleep Mode Response */ 4009 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0) 4010 return -1; 4011 4012 nl80211_mgmt_handle_register_eloop(bss); 4013 4014 return 0; 4015} 4016 4017 4018static int nl80211_register_spurious_class3(struct i802_bss *bss) 4019{ 4020 struct wpa_driver_nl80211_data *drv = bss->drv; 4021 struct nl_msg *msg; 4022 int ret = -1; 4023 4024 msg = nlmsg_alloc(); 4025 if (!msg) 4026 return -1; 4027 4028 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 4029 4030 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 4031 4032 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 4033 msg = NULL; 4034 if (ret) { 4035 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 4036 "failed: ret=%d (%s)", 4037 ret, strerror(-ret)); 4038 goto nla_put_failure; 4039 } 4040 ret = 0; 4041nla_put_failure: 4042 nlmsg_free(msg); 4043 return ret; 4044} 4045 4046 4047static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 4048{ 4049 static const int stypes[] = { 4050 WLAN_FC_STYPE_AUTH, 4051 WLAN_FC_STYPE_ASSOC_REQ, 4052 WLAN_FC_STYPE_REASSOC_REQ, 4053 WLAN_FC_STYPE_DISASSOC, 4054 WLAN_FC_STYPE_DEAUTH, 4055 WLAN_FC_STYPE_ACTION, 4056 WLAN_FC_STYPE_PROBE_REQ, 4057/* Beacon doesn't work as mac80211 doesn't currently allow 4058 * it, but it wouldn't really be the right thing anyway as 4059 * it isn't per interface ... maybe just dump the scan 4060 * results periodically for OLBC? 4061 */ 4062// WLAN_FC_STYPE_BEACON, 4063 }; 4064 unsigned int i; 4065 4066 if (nl80211_alloc_mgmt_handle(bss)) 4067 return -1; 4068 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 4069 "handle %p", bss->nl_mgmt); 4070 4071 for (i = 0; i < ARRAY_SIZE(stypes); i++) { 4072 if (nl80211_register_frame(bss, bss->nl_mgmt, 4073 (WLAN_FC_TYPE_MGMT << 2) | 4074 (stypes[i] << 4), 4075 NULL, 0) < 0) { 4076 goto out_err; 4077 } 4078 } 4079 4080 if (nl80211_register_spurious_class3(bss)) 4081 goto out_err; 4082 4083 if (nl80211_get_wiphy_data_ap(bss) == NULL) 4084 goto out_err; 4085 4086 nl80211_mgmt_handle_register_eloop(bss); 4087 return 0; 4088 4089out_err: 4090 nl_destroy_handles(&bss->nl_mgmt); 4091 return -1; 4092} 4093 4094 4095static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 4096{ 4097 if (nl80211_alloc_mgmt_handle(bss)) 4098 return -1; 4099 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 4100 "handle %p (device SME)", bss->nl_mgmt); 4101 4102 if (nl80211_register_frame(bss, bss->nl_mgmt, 4103 (WLAN_FC_TYPE_MGMT << 2) | 4104 (WLAN_FC_STYPE_ACTION << 4), 4105 NULL, 0) < 0) 4106 goto out_err; 4107 4108 nl80211_mgmt_handle_register_eloop(bss); 4109 return 0; 4110 4111out_err: 4112 nl_destroy_handles(&bss->nl_mgmt); 4113 return -1; 4114} 4115 4116 4117static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 4118{ 4119 if (bss->nl_mgmt == NULL) 4120 return; 4121 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 4122 "(%s)", bss->nl_mgmt, reason); 4123 nl80211_destroy_eloop_handle(&bss->nl_mgmt); 4124 4125 nl80211_put_wiphy_data_ap(bss); 4126} 4127 4128 4129static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 4130{ 4131 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 4132} 4133 4134 4135static void nl80211_del_p2pdev(struct i802_bss *bss) 4136{ 4137 struct wpa_driver_nl80211_data *drv = bss->drv; 4138 struct nl_msg *msg; 4139 int ret; 4140 4141 msg = nlmsg_alloc(); 4142 if (!msg) 4143 return; 4144 4145 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 4146 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id); 4147 4148 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4149 msg = NULL; 4150 4151 wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s", 4152 bss->ifname, (long long unsigned int) bss->wdev_id, 4153 strerror(-ret)); 4154 4155nla_put_failure: 4156 nlmsg_free(msg); 4157} 4158 4159 4160static int nl80211_set_p2pdev(struct i802_bss *bss, int start) 4161{ 4162 struct wpa_driver_nl80211_data *drv = bss->drv; 4163 struct nl_msg *msg; 4164 int ret = -1; 4165 4166 msg = nlmsg_alloc(); 4167 if (!msg) 4168 return -1; 4169 4170 if (start) 4171 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_P2P_DEVICE); 4172 else 4173 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_P2P_DEVICE); 4174 4175 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id); 4176 4177 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4178 msg = NULL; 4179 4180 wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s", 4181 start ? "Start" : "Stop", 4182 bss->ifname, (long long unsigned int) bss->wdev_id, 4183 strerror(-ret)); 4184 4185nla_put_failure: 4186 nlmsg_free(msg); 4187 return ret; 4188} 4189 4190 4191static int i802_set_iface_flags(struct i802_bss *bss, int up) 4192{ 4193 enum nl80211_iftype nlmode; 4194 4195 nlmode = nl80211_get_ifmode(bss); 4196 if (nlmode != NL80211_IFTYPE_P2P_DEVICE) { 4197 return linux_set_iface_flags(bss->drv->global->ioctl_sock, 4198 bss->ifname, up); 4199 } 4200 4201 /* P2P Device has start/stop which is equivalent */ 4202 return nl80211_set_p2pdev(bss, up); 4203} 4204 4205 4206static int 4207wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv, 4208 const u8 *set_addr, int first) 4209{ 4210 struct i802_bss *bss = drv->first_bss; 4211 int send_rfkill_event = 0; 4212 enum nl80211_iftype nlmode; 4213 4214 drv->ifindex = if_nametoindex(bss->ifname); 4215 bss->ifindex = drv->ifindex; 4216 bss->wdev_id = drv->global->if_add_wdevid; 4217 bss->wdev_id_set = drv->global->if_add_wdevid_set; 4218 4219 bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex; 4220 bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set; 4221 drv->global->if_add_wdevid_set = 0; 4222 4223 if (wpa_driver_nl80211_capa(drv)) 4224 return -1; 4225 4226 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 4227 bss->ifname, drv->phyname); 4228 4229 if (set_addr && 4230 (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) || 4231 linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 4232 set_addr))) 4233 return -1; 4234 4235 if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP) 4236 drv->start_mode_ap = 1; 4237 4238 if (drv->hostapd) 4239 nlmode = NL80211_IFTYPE_AP; 4240 else if (bss->if_dynamic) 4241 nlmode = nl80211_get_ifmode(bss); 4242 else 4243 nlmode = NL80211_IFTYPE_STATION; 4244 4245 if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) { 4246 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode"); 4247 return -1; 4248 } 4249 4250 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) { 4251 int ret = nl80211_set_p2pdev(bss, 1); 4252 if (ret < 0) 4253 wpa_printf(MSG_ERROR, "nl80211: Could not start P2P device"); 4254 nl80211_get_macaddr(bss); 4255 return ret; 4256 } 4257 4258 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 4259 if (rfkill_is_blocked(drv->rfkill)) { 4260 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 4261 "interface '%s' due to rfkill", 4262 bss->ifname); 4263 drv->if_disabled = 1; 4264 send_rfkill_event = 1; 4265 } else { 4266 wpa_printf(MSG_ERROR, "nl80211: Could not set " 4267 "interface '%s' UP", bss->ifname); 4268 return -1; 4269 } 4270 } 4271 4272 if (!drv->hostapd) 4273 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 4274 1, IF_OPER_DORMANT); 4275 4276 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 4277 bss->addr)) 4278 return -1; 4279 4280 if (send_rfkill_event) { 4281 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 4282 drv, drv->ctx); 4283 } 4284 4285 return 0; 4286} 4287 4288 4289static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 4290{ 4291 struct nl_msg *msg; 4292 4293 msg = nlmsg_alloc(); 4294 if (!msg) 4295 return -ENOMEM; 4296 4297 wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)", 4298 drv->ifindex); 4299 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 4300 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4301 4302 return send_and_recv_msgs(drv, msg, NULL, NULL); 4303 nla_put_failure: 4304 nlmsg_free(msg); 4305 return -ENOBUFS; 4306} 4307 4308 4309/** 4310 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 4311 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init() 4312 * 4313 * Shut down driver interface and processing of driver events. Free 4314 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 4315 */ 4316static void wpa_driver_nl80211_deinit(struct i802_bss *bss) 4317{ 4318 struct wpa_driver_nl80211_data *drv = bss->drv; 4319 4320 bss->in_deinit = 1; 4321 if (drv->data_tx_status) 4322 eloop_unregister_read_sock(drv->eapol_tx_sock); 4323 if (drv->eapol_tx_sock >= 0) 4324 close(drv->eapol_tx_sock); 4325 4326 if (bss->nl_preq) 4327 wpa_driver_nl80211_probe_req_report(bss, 0); 4328 if (bss->added_if_into_bridge) { 4329 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 4330 bss->ifname) < 0) 4331 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 4332 "interface %s from bridge %s: %s", 4333 bss->ifname, bss->brname, strerror(errno)); 4334 } 4335 if (bss->added_bridge) { 4336 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 4337 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 4338 "bridge %s: %s", 4339 bss->brname, strerror(errno)); 4340 } 4341 4342 nl80211_remove_monitor_interface(drv); 4343 4344 if (is_ap_interface(drv->nlmode)) 4345 wpa_driver_nl80211_del_beacon(drv); 4346 4347 if (drv->eapol_sock >= 0) { 4348 eloop_unregister_read_sock(drv->eapol_sock); 4349 close(drv->eapol_sock); 4350 } 4351 4352 if (drv->if_indices != drv->default_if_indices) 4353 os_free(drv->if_indices); 4354 4355 if (drv->disabled_11b_rates) 4356 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 4357 4358 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 4359 IF_OPER_UP); 4360 rfkill_deinit(drv->rfkill); 4361 4362 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 4363 4364 if (!drv->start_iface_up) 4365 (void) i802_set_iface_flags(bss, 0); 4366 if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) { 4367 if (!drv->hostapd || !drv->start_mode_ap) 4368 wpa_driver_nl80211_set_mode(bss, 4369 NL80211_IFTYPE_STATION); 4370 nl80211_mgmt_unsubscribe(bss, "deinit"); 4371 } else { 4372 nl80211_mgmt_unsubscribe(bss, "deinit"); 4373 nl80211_del_p2pdev(bss); 4374 } 4375 nl_cb_put(drv->nl_cb); 4376 4377 nl80211_destroy_bss(drv->first_bss); 4378 4379 os_free(drv->filter_ssids); 4380 4381 os_free(drv->auth_ie); 4382 4383 if (drv->in_interface_list) 4384 dl_list_del(&drv->list); 4385 4386 os_free(drv->extended_capa); 4387 os_free(drv->extended_capa_mask); 4388 os_free(drv->first_bss); 4389 os_free(drv); 4390} 4391 4392 4393/** 4394 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 4395 * @eloop_ctx: Driver private data 4396 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 4397 * 4398 * This function can be used as registered timeout when starting a scan to 4399 * generate a scan completed event if the driver does not report this. 4400 */ 4401static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 4402{ 4403 struct wpa_driver_nl80211_data *drv = eloop_ctx; 4404 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 4405 wpa_driver_nl80211_set_mode(drv->first_bss, 4406 drv->ap_scan_as_station); 4407 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 4408 } 4409 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 4410 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 4411} 4412 4413 4414static struct nl_msg * 4415nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, 4416 struct wpa_driver_scan_params *params, u64 *wdev_id) 4417{ 4418 struct nl_msg *msg; 4419 size_t i; 4420 4421 msg = nlmsg_alloc(); 4422 if (!msg) 4423 return NULL; 4424 4425 nl80211_cmd(drv, msg, 0, cmd); 4426 4427 if (!wdev_id) 4428 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4429 else 4430 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, *wdev_id); 4431 4432 if (params->num_ssids) { 4433 struct nlattr *ssids; 4434 4435 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 4436 if (ssids == NULL) 4437 goto fail; 4438 for (i = 0; i < params->num_ssids; i++) { 4439 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 4440 params->ssids[i].ssid, 4441 params->ssids[i].ssid_len); 4442 if (nla_put(msg, i + 1, params->ssids[i].ssid_len, 4443 params->ssids[i].ssid) < 0) 4444 goto fail; 4445 } 4446 nla_nest_end(msg, ssids); 4447 } 4448 4449 if (params->extra_ies) { 4450 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 4451 params->extra_ies, params->extra_ies_len); 4452 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, 4453 params->extra_ies) < 0) 4454 goto fail; 4455 } 4456 4457 if (params->freqs) { 4458 struct nlattr *freqs; 4459 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 4460 if (freqs == NULL) 4461 goto fail; 4462 for (i = 0; params->freqs[i]; i++) { 4463 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 4464 "MHz", params->freqs[i]); 4465 if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0) 4466 goto fail; 4467 } 4468 nla_nest_end(msg, freqs); 4469 } 4470 4471 os_free(drv->filter_ssids); 4472 drv->filter_ssids = params->filter_ssids; 4473 params->filter_ssids = NULL; 4474 drv->num_filter_ssids = params->num_filter_ssids; 4475 4476 return msg; 4477 4478fail: 4479nla_put_failure: 4480 nlmsg_free(msg); 4481 return NULL; 4482} 4483 4484 4485/** 4486 * wpa_driver_nl80211_scan - Request the driver to initiate scan 4487 * @bss: Pointer to private driver data from wpa_driver_nl80211_init() 4488 * @params: Scan parameters 4489 * Returns: 0 on success, -1 on failure 4490 */ 4491static int wpa_driver_nl80211_scan(struct i802_bss *bss, 4492 struct wpa_driver_scan_params *params) 4493{ 4494 struct wpa_driver_nl80211_data *drv = bss->drv; 4495 int ret = -1, timeout; 4496 struct nl_msg *msg = NULL; 4497 4498 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request"); 4499 drv->scan_for_auth = 0; 4500 4501 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params, 4502 bss->wdev_id_set ? &bss->wdev_id : NULL); 4503 if (!msg) 4504 return -1; 4505 4506 if (params->p2p_probe) { 4507 struct nlattr *rates; 4508 4509 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 4510 4511 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES); 4512 if (rates == NULL) 4513 goto nla_put_failure; 4514 4515 /* 4516 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 4517 * by masking out everything else apart from the OFDM rates 6, 4518 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 4519 * rates are left enabled. 4520 */ 4521 NLA_PUT(msg, NL80211_BAND_2GHZ, 8, 4522 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 4523 nla_nest_end(msg, rates); 4524 4525 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 4526 } 4527 4528 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4529 msg = NULL; 4530 if (ret) { 4531 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 4532 "(%s)", ret, strerror(-ret)); 4533 if (drv->hostapd && is_ap_interface(drv->nlmode)) { 4534 /* 4535 * mac80211 does not allow scan requests in AP mode, so 4536 * try to do this in station mode. 4537 */ 4538 if (wpa_driver_nl80211_set_mode( 4539 bss, NL80211_IFTYPE_STATION)) 4540 goto nla_put_failure; 4541 4542 if (wpa_driver_nl80211_scan(bss, params)) { 4543 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 4544 goto nla_put_failure; 4545 } 4546 4547 /* Restore AP mode when processing scan results */ 4548 drv->ap_scan_as_station = drv->nlmode; 4549 ret = 0; 4550 } else 4551 goto nla_put_failure; 4552 } 4553 4554 drv->scan_state = SCAN_REQUESTED; 4555 /* Not all drivers generate "scan completed" wireless event, so try to 4556 * read results after a timeout. */ 4557 timeout = 10; 4558 if (drv->scan_complete_events) { 4559 /* 4560 * The driver seems to deliver events to notify when scan is 4561 * complete, so use longer timeout to avoid race conditions 4562 * with scanning and following association request. 4563 */ 4564 timeout = 30; 4565 } 4566 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 4567 "seconds", ret, timeout); 4568 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 4569 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 4570 drv, drv->ctx); 4571 4572nla_put_failure: 4573 nlmsg_free(msg); 4574 return ret; 4575} 4576 4577 4578/** 4579 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 4580 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 4581 * @params: Scan parameters 4582 * @interval: Interval between scan cycles in milliseconds 4583 * Returns: 0 on success, -1 on failure or if not supported 4584 */ 4585static int wpa_driver_nl80211_sched_scan(void *priv, 4586 struct wpa_driver_scan_params *params, 4587 u32 interval) 4588{ 4589 struct i802_bss *bss = priv; 4590 struct wpa_driver_nl80211_data *drv = bss->drv; 4591 int ret = -1; 4592 struct nl_msg *msg; 4593 size_t i; 4594 4595 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request"); 4596 4597#ifdef ANDROID 4598 if (!drv->capa.sched_scan_supported) 4599 return android_pno_start(bss, params); 4600#endif /* ANDROID */ 4601 4602 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params, 4603 bss->wdev_id_set ? &bss->wdev_id : NULL); 4604 if (!msg) 4605 goto nla_put_failure; 4606 4607 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 4608 4609 if ((drv->num_filter_ssids && 4610 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || 4611 params->filter_rssi) { 4612 struct nlattr *match_sets; 4613 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 4614 if (match_sets == NULL) 4615 goto nla_put_failure; 4616 4617 for (i = 0; i < drv->num_filter_ssids; i++) { 4618 struct nlattr *match_set_ssid; 4619 wpa_hexdump_ascii(MSG_MSGDUMP, 4620 "nl80211: Sched scan filter SSID", 4621 drv->filter_ssids[i].ssid, 4622 drv->filter_ssids[i].ssid_len); 4623 4624 match_set_ssid = nla_nest_start(msg, i + 1); 4625 if (match_set_ssid == NULL) 4626 goto nla_put_failure; 4627 NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 4628 drv->filter_ssids[i].ssid_len, 4629 drv->filter_ssids[i].ssid); 4630 4631 nla_nest_end(msg, match_set_ssid); 4632 } 4633 4634 if (params->filter_rssi) { 4635 struct nlattr *match_set_rssi; 4636 match_set_rssi = nla_nest_start(msg, 0); 4637 if (match_set_rssi == NULL) 4638 goto nla_put_failure; 4639 NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 4640 params->filter_rssi); 4641 wpa_printf(MSG_MSGDUMP, 4642 "nl80211: Sched scan RSSI filter %d dBm", 4643 params->filter_rssi); 4644 nla_nest_end(msg, match_set_rssi); 4645 } 4646 4647 nla_nest_end(msg, match_sets); 4648 } 4649 4650 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4651 4652 /* TODO: if we get an error here, we should fall back to normal scan */ 4653 4654 msg = NULL; 4655 if (ret) { 4656 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 4657 "ret=%d (%s)", ret, strerror(-ret)); 4658 goto nla_put_failure; 4659 } 4660 4661 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 4662 "scan interval %d msec", ret, interval); 4663 4664nla_put_failure: 4665 nlmsg_free(msg); 4666 return ret; 4667} 4668 4669 4670/** 4671 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 4672 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 4673 * Returns: 0 on success, -1 on failure or if not supported 4674 */ 4675static int wpa_driver_nl80211_stop_sched_scan(void *priv) 4676{ 4677 struct i802_bss *bss = priv; 4678 struct wpa_driver_nl80211_data *drv = bss->drv; 4679 int ret = 0; 4680 struct nl_msg *msg; 4681 4682#ifdef ANDROID 4683 if (!drv->capa.sched_scan_supported) 4684 return android_pno_stop(bss); 4685#endif /* ANDROID */ 4686 4687 msg = nlmsg_alloc(); 4688 if (!msg) 4689 return -1; 4690 4691 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 4692 4693 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4694 4695 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4696 msg = NULL; 4697 if (ret) { 4698 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 4699 "ret=%d (%s)", ret, strerror(-ret)); 4700 goto nla_put_failure; 4701 } 4702 4703 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 4704 4705nla_put_failure: 4706 nlmsg_free(msg); 4707 return ret; 4708} 4709 4710 4711static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 4712{ 4713 const u8 *end, *pos; 4714 4715 if (ies == NULL) 4716 return NULL; 4717 4718 pos = ies; 4719 end = ies + ies_len; 4720 4721 while (pos + 1 < end) { 4722 if (pos + 2 + pos[1] > end) 4723 break; 4724 if (pos[0] == ie) 4725 return pos; 4726 pos += 2 + pos[1]; 4727 } 4728 4729 return NULL; 4730} 4731 4732 4733static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 4734 const u8 *ie, size_t ie_len) 4735{ 4736 const u8 *ssid; 4737 size_t i; 4738 4739 if (drv->filter_ssids == NULL) 4740 return 0; 4741 4742 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 4743 if (ssid == NULL) 4744 return 1; 4745 4746 for (i = 0; i < drv->num_filter_ssids; i++) { 4747 if (ssid[1] == drv->filter_ssids[i].ssid_len && 4748 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 4749 0) 4750 return 0; 4751 } 4752 4753 return 1; 4754} 4755 4756 4757static int bss_info_handler(struct nl_msg *msg, void *arg) 4758{ 4759 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 4760 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4761 struct nlattr *bss[NL80211_BSS_MAX + 1]; 4762 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 4763 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 4764 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 4765 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 4766 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 4767 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 4768 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 4769 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 4770 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 4771 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 4772 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 4773 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 4774 }; 4775 struct nl80211_bss_info_arg *_arg = arg; 4776 struct wpa_scan_results *res = _arg->res; 4777 struct wpa_scan_res **tmp; 4778 struct wpa_scan_res *r; 4779 const u8 *ie, *beacon_ie; 4780 size_t ie_len, beacon_ie_len; 4781 u8 *pos; 4782 size_t i; 4783 4784 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4785 genlmsg_attrlen(gnlh, 0), NULL); 4786 if (!tb[NL80211_ATTR_BSS]) 4787 return NL_SKIP; 4788 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 4789 bss_policy)) 4790 return NL_SKIP; 4791 if (bss[NL80211_BSS_STATUS]) { 4792 enum nl80211_bss_status status; 4793 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4794 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4795 bss[NL80211_BSS_FREQUENCY]) { 4796 _arg->assoc_freq = 4797 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4798 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 4799 _arg->assoc_freq); 4800 } 4801 if (status == NL80211_BSS_STATUS_ASSOCIATED && 4802 bss[NL80211_BSS_BSSID]) { 4803 os_memcpy(_arg->assoc_bssid, 4804 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 4805 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 4806 MACSTR, MAC2STR(_arg->assoc_bssid)); 4807 } 4808 } 4809 if (!res) 4810 return NL_SKIP; 4811 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 4812 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4813 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 4814 } else { 4815 ie = NULL; 4816 ie_len = 0; 4817 } 4818 if (bss[NL80211_BSS_BEACON_IES]) { 4819 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 4820 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 4821 } else { 4822 beacon_ie = NULL; 4823 beacon_ie_len = 0; 4824 } 4825 4826 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 4827 ie ? ie_len : beacon_ie_len)) 4828 return NL_SKIP; 4829 4830 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 4831 if (r == NULL) 4832 return NL_SKIP; 4833 if (bss[NL80211_BSS_BSSID]) 4834 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 4835 ETH_ALEN); 4836 if (bss[NL80211_BSS_FREQUENCY]) 4837 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 4838 if (bss[NL80211_BSS_BEACON_INTERVAL]) 4839 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 4840 if (bss[NL80211_BSS_CAPABILITY]) 4841 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 4842 r->flags |= WPA_SCAN_NOISE_INVALID; 4843 if (bss[NL80211_BSS_SIGNAL_MBM]) { 4844 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 4845 r->level /= 100; /* mBm to dBm */ 4846 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 4847 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 4848 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 4849 r->flags |= WPA_SCAN_QUAL_INVALID; 4850 } else 4851 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 4852 if (bss[NL80211_BSS_TSF]) 4853 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 4854 if (bss[NL80211_BSS_SEEN_MS_AGO]) 4855 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 4856 r->ie_len = ie_len; 4857 pos = (u8 *) (r + 1); 4858 if (ie) { 4859 os_memcpy(pos, ie, ie_len); 4860 pos += ie_len; 4861 } 4862 r->beacon_ie_len = beacon_ie_len; 4863 if (beacon_ie) 4864 os_memcpy(pos, beacon_ie, beacon_ie_len); 4865 4866 if (bss[NL80211_BSS_STATUS]) { 4867 enum nl80211_bss_status status; 4868 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 4869 switch (status) { 4870 case NL80211_BSS_STATUS_AUTHENTICATED: 4871 r->flags |= WPA_SCAN_AUTHENTICATED; 4872 break; 4873 case NL80211_BSS_STATUS_ASSOCIATED: 4874 r->flags |= WPA_SCAN_ASSOCIATED; 4875 break; 4876 default: 4877 break; 4878 } 4879 } 4880 4881 /* 4882 * cfg80211 maintains separate BSS table entries for APs if the same 4883 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 4884 * not use frequency as a separate key in the BSS table, so filter out 4885 * duplicated entries. Prefer associated BSS entry in such a case in 4886 * order to get the correct frequency into the BSS table. 4887 */ 4888 for (i = 0; i < res->num; i++) { 4889 const u8 *s1, *s2; 4890 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 4891 continue; 4892 4893 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 4894 res->res[i]->ie_len, WLAN_EID_SSID); 4895 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 4896 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 4897 os_memcmp(s1, s2, 2 + s1[1]) != 0) 4898 continue; 4899 4900 /* Same BSSID,SSID was already included in scan results */ 4901 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 4902 "for " MACSTR, MAC2STR(r->bssid)); 4903 4904 if ((r->flags & WPA_SCAN_ASSOCIATED) && 4905 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 4906 os_free(res->res[i]); 4907 res->res[i] = r; 4908 } else 4909 os_free(r); 4910 return NL_SKIP; 4911 } 4912 4913 tmp = os_realloc_array(res->res, res->num + 1, 4914 sizeof(struct wpa_scan_res *)); 4915 if (tmp == NULL) { 4916 os_free(r); 4917 return NL_SKIP; 4918 } 4919 tmp[res->num++] = r; 4920 res->res = tmp; 4921 4922 return NL_SKIP; 4923} 4924 4925 4926static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 4927 const u8 *addr) 4928{ 4929 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 4930 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 4931 "mismatch (" MACSTR ")", MAC2STR(addr)); 4932 wpa_driver_nl80211_mlme(drv, addr, 4933 NL80211_CMD_DEAUTHENTICATE, 4934 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 4935 } 4936} 4937 4938 4939static void wpa_driver_nl80211_check_bss_status( 4940 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 4941{ 4942 size_t i; 4943 4944 for (i = 0; i < res->num; i++) { 4945 struct wpa_scan_res *r = res->res[i]; 4946 if (r->flags & WPA_SCAN_AUTHENTICATED) { 4947 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4948 "indicates BSS status with " MACSTR 4949 " as authenticated", 4950 MAC2STR(r->bssid)); 4951 if (is_sta_interface(drv->nlmode) && 4952 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 4953 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 4954 0) { 4955 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 4956 " in local state (auth=" MACSTR 4957 " assoc=" MACSTR ")", 4958 MAC2STR(drv->auth_bssid), 4959 MAC2STR(drv->bssid)); 4960 clear_state_mismatch(drv, r->bssid); 4961 } 4962 } 4963 4964 if (r->flags & WPA_SCAN_ASSOCIATED) { 4965 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 4966 "indicate BSS status with " MACSTR 4967 " as associated", 4968 MAC2STR(r->bssid)); 4969 if (is_sta_interface(drv->nlmode) && 4970 !drv->associated) { 4971 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4972 "(not associated) does not match " 4973 "with BSS state"); 4974 clear_state_mismatch(drv, r->bssid); 4975 } else if (is_sta_interface(drv->nlmode) && 4976 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 4977 0) { 4978 wpa_printf(MSG_DEBUG, "nl80211: Local state " 4979 "(associated with " MACSTR ") does " 4980 "not match with BSS state", 4981 MAC2STR(drv->bssid)); 4982 clear_state_mismatch(drv, r->bssid); 4983 clear_state_mismatch(drv, drv->bssid); 4984 } 4985 } 4986 } 4987} 4988 4989 4990static struct wpa_scan_results * 4991nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 4992{ 4993 struct nl_msg *msg; 4994 struct wpa_scan_results *res; 4995 int ret; 4996 struct nl80211_bss_info_arg arg; 4997 4998 res = os_zalloc(sizeof(*res)); 4999 if (res == NULL) 5000 return NULL; 5001 msg = nlmsg_alloc(); 5002 if (!msg) 5003 goto nla_put_failure; 5004 5005 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 5006 if (nl80211_set_iface_id(msg, drv->first_bss) < 0) 5007 goto nla_put_failure; 5008 5009 arg.drv = drv; 5010 arg.res = res; 5011 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 5012 msg = NULL; 5013 if (ret == 0) { 5014 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 5015 "BSSes)", (unsigned long) res->num); 5016 nl80211_get_noise_for_scan_results(drv, res); 5017 return res; 5018 } 5019 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 5020 "(%s)", ret, strerror(-ret)); 5021nla_put_failure: 5022 nlmsg_free(msg); 5023 wpa_scan_results_free(res); 5024 return NULL; 5025} 5026 5027 5028/** 5029 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 5030 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 5031 * Returns: Scan results on success, -1 on failure 5032 */ 5033static struct wpa_scan_results * 5034wpa_driver_nl80211_get_scan_results(void *priv) 5035{ 5036 struct i802_bss *bss = priv; 5037 struct wpa_driver_nl80211_data *drv = bss->drv; 5038 struct wpa_scan_results *res; 5039 5040 res = nl80211_get_scan_results(drv); 5041 if (res) 5042 wpa_driver_nl80211_check_bss_status(drv, res); 5043 return res; 5044} 5045 5046 5047static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 5048{ 5049 struct wpa_scan_results *res; 5050 size_t i; 5051 5052 res = nl80211_get_scan_results(drv); 5053 if (res == NULL) { 5054 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 5055 return; 5056 } 5057 5058 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 5059 for (i = 0; i < res->num; i++) { 5060 struct wpa_scan_res *r = res->res[i]; 5061 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 5062 (int) i, (int) res->num, MAC2STR(r->bssid), 5063 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 5064 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 5065 } 5066 5067 wpa_scan_results_free(res); 5068} 5069 5070 5071static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss, 5072 enum wpa_alg alg, const u8 *addr, 5073 int key_idx, int set_tx, 5074 const u8 *seq, size_t seq_len, 5075 const u8 *key, size_t key_len) 5076{ 5077 struct wpa_driver_nl80211_data *drv = bss->drv; 5078 int ifindex; 5079 struct nl_msg *msg; 5080 int ret; 5081 int tdls = 0; 5082 5083 /* Ignore for P2P Device */ 5084 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) 5085 return 0; 5086 5087 ifindex = if_nametoindex(ifname); 5088 wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d " 5089 "set_tx=%d seq_len=%lu key_len=%lu", 5090 __func__, ifindex, ifname, alg, addr, key_idx, set_tx, 5091 (unsigned long) seq_len, (unsigned long) key_len); 5092#ifdef CONFIG_TDLS 5093 if (key_idx == -1) { 5094 key_idx = 0; 5095 tdls = 1; 5096 } 5097#endif /* CONFIG_TDLS */ 5098 5099 msg = nlmsg_alloc(); 5100 if (!msg) 5101 return -ENOMEM; 5102 5103 if (alg == WPA_ALG_NONE) { 5104 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 5105 } else { 5106 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 5107 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 5108 switch (alg) { 5109 case WPA_ALG_WEP: 5110 if (key_len == 5) 5111 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 5112 WLAN_CIPHER_SUITE_WEP40); 5113 else 5114 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 5115 WLAN_CIPHER_SUITE_WEP104); 5116 break; 5117 case WPA_ALG_TKIP: 5118 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 5119 WLAN_CIPHER_SUITE_TKIP); 5120 break; 5121 case WPA_ALG_CCMP: 5122 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 5123 WLAN_CIPHER_SUITE_CCMP); 5124 break; 5125 case WPA_ALG_GCMP: 5126 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 5127 WLAN_CIPHER_SUITE_GCMP); 5128 break; 5129 case WPA_ALG_IGTK: 5130 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 5131 WLAN_CIPHER_SUITE_AES_CMAC); 5132 break; 5133 case WPA_ALG_SMS4: 5134 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 5135 WLAN_CIPHER_SUITE_SMS4); 5136 break; 5137 case WPA_ALG_KRK: 5138 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 5139 WLAN_CIPHER_SUITE_KRK); 5140 break; 5141 default: 5142 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 5143 "algorithm %d", __func__, alg); 5144 nlmsg_free(msg); 5145 return -1; 5146 } 5147 } 5148 5149 if (seq && seq_len) 5150 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 5151 5152 if (addr && !is_broadcast_ether_addr(addr)) { 5153 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 5154 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5155 5156 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 5157 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 5158 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 5159 NL80211_KEYTYPE_GROUP); 5160 } 5161 } else if (addr && is_broadcast_ether_addr(addr)) { 5162 struct nlattr *types; 5163 5164 wpa_printf(MSG_DEBUG, " broadcast key"); 5165 5166 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 5167 if (!types) 5168 goto nla_put_failure; 5169 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 5170 nla_nest_end(msg, types); 5171 } 5172 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 5173 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5174 5175 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5176 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 5177 ret = 0; 5178 if (ret) 5179 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 5180 ret, strerror(-ret)); 5181 5182 /* 5183 * If we failed or don't need to set the default TX key (below), 5184 * we're done here. 5185 */ 5186 if (ret || !set_tx || alg == WPA_ALG_NONE || tdls) 5187 return ret; 5188 if (is_ap_interface(drv->nlmode) && addr && 5189 !is_broadcast_ether_addr(addr)) 5190 return ret; 5191 5192 msg = nlmsg_alloc(); 5193 if (!msg) 5194 return -ENOMEM; 5195 5196 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 5197 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 5198 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5199 if (alg == WPA_ALG_IGTK) 5200 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 5201 else 5202 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 5203 if (addr && is_broadcast_ether_addr(addr)) { 5204 struct nlattr *types; 5205 5206 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 5207 if (!types) 5208 goto nla_put_failure; 5209 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 5210 nla_nest_end(msg, types); 5211 } else if (addr) { 5212 struct nlattr *types; 5213 5214 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES); 5215 if (!types) 5216 goto nla_put_failure; 5217 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST); 5218 nla_nest_end(msg, types); 5219 } 5220 5221 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5222 if (ret == -ENOENT) 5223 ret = 0; 5224 if (ret) 5225 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 5226 "err=%d %s)", ret, strerror(-ret)); 5227 return ret; 5228 5229nla_put_failure: 5230 nlmsg_free(msg); 5231 return -ENOBUFS; 5232} 5233 5234 5235static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 5236 int key_idx, int defkey, 5237 const u8 *seq, size_t seq_len, 5238 const u8 *key, size_t key_len) 5239{ 5240 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 5241 if (!key_attr) 5242 return -1; 5243 5244 if (defkey && alg == WPA_ALG_IGTK) 5245 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 5246 else if (defkey) 5247 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 5248 5249 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 5250 5251 switch (alg) { 5252 case WPA_ALG_WEP: 5253 if (key_len == 5) 5254 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 5255 WLAN_CIPHER_SUITE_WEP40); 5256 else 5257 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 5258 WLAN_CIPHER_SUITE_WEP104); 5259 break; 5260 case WPA_ALG_TKIP: 5261 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 5262 break; 5263 case WPA_ALG_CCMP: 5264 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 5265 break; 5266 case WPA_ALG_GCMP: 5267 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP); 5268 break; 5269 case WPA_ALG_IGTK: 5270 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 5271 WLAN_CIPHER_SUITE_AES_CMAC); 5272 break; 5273 default: 5274 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 5275 "algorithm %d", __func__, alg); 5276 return -1; 5277 } 5278 5279 if (seq && seq_len) 5280 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 5281 5282 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 5283 5284 nla_nest_end(msg, key_attr); 5285 5286 return 0; 5287 nla_put_failure: 5288 return -1; 5289} 5290 5291 5292static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 5293 struct nl_msg *msg) 5294{ 5295 int i, privacy = 0; 5296 struct nlattr *nl_keys, *nl_key; 5297 5298 for (i = 0; i < 4; i++) { 5299 if (!params->wep_key[i]) 5300 continue; 5301 privacy = 1; 5302 break; 5303 } 5304 if (params->wps == WPS_MODE_PRIVACY) 5305 privacy = 1; 5306 if (params->pairwise_suite && 5307 params->pairwise_suite != WPA_CIPHER_NONE) 5308 privacy = 1; 5309 5310 if (!privacy) 5311 return 0; 5312 5313 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5314 5315 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 5316 if (!nl_keys) 5317 goto nla_put_failure; 5318 5319 for (i = 0; i < 4; i++) { 5320 if (!params->wep_key[i]) 5321 continue; 5322 5323 nl_key = nla_nest_start(msg, i); 5324 if (!nl_key) 5325 goto nla_put_failure; 5326 5327 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 5328 params->wep_key[i]); 5329 if (params->wep_key_len[i] == 5) 5330 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 5331 WLAN_CIPHER_SUITE_WEP40); 5332 else 5333 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 5334 WLAN_CIPHER_SUITE_WEP104); 5335 5336 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 5337 5338 if (i == params->wep_tx_keyidx) 5339 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 5340 5341 nla_nest_end(msg, nl_key); 5342 } 5343 nla_nest_end(msg, nl_keys); 5344 5345 return 0; 5346 5347nla_put_failure: 5348 return -ENOBUFS; 5349} 5350 5351 5352static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 5353 const u8 *addr, int cmd, u16 reason_code, 5354 int local_state_change) 5355{ 5356 int ret = -1; 5357 struct nl_msg *msg; 5358 5359 msg = nlmsg_alloc(); 5360 if (!msg) 5361 return -1; 5362 5363 nl80211_cmd(drv, msg, 0, cmd); 5364 5365 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5366 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 5367 if (addr) 5368 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5369 if (local_state_change) 5370 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 5371 5372 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5373 msg = NULL; 5374 if (ret) { 5375 wpa_dbg(drv->ctx, MSG_DEBUG, 5376 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 5377 reason_code, ret, strerror(-ret)); 5378 goto nla_put_failure; 5379 } 5380 ret = 0; 5381 5382nla_put_failure: 5383 nlmsg_free(msg); 5384 return ret; 5385} 5386 5387 5388static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 5389 int reason_code) 5390{ 5391 int ret; 5392 5393 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code); 5394 nl80211_mark_disconnected(drv); 5395 /* Disconnect command doesn't need BSSID - it uses cached value */ 5396 ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT, 5397 reason_code, 0); 5398 /* 5399 * For locally generated disconnect, supplicant already generates a 5400 * DEAUTH event, so ignore the event from NL80211. 5401 */ 5402 drv->ignore_next_local_disconnect = ret == 0; 5403 5404 return ret; 5405} 5406 5407 5408static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss, 5409 const u8 *addr, int reason_code) 5410{ 5411 struct wpa_driver_nl80211_data *drv = bss->drv; 5412 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 5413 return wpa_driver_nl80211_disconnect(drv, reason_code); 5414 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 5415 __func__, MAC2STR(addr), reason_code); 5416 nl80211_mark_disconnected(drv); 5417 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 5418 return nl80211_leave_ibss(drv); 5419 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 5420 reason_code, 0); 5421} 5422 5423 5424static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 5425 struct wpa_driver_auth_params *params) 5426{ 5427 int i; 5428 5429 drv->auth_freq = params->freq; 5430 drv->auth_alg = params->auth_alg; 5431 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 5432 drv->auth_local_state_change = params->local_state_change; 5433 drv->auth_p2p = params->p2p; 5434 5435 if (params->bssid) 5436 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 5437 else 5438 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 5439 5440 if (params->ssid) { 5441 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 5442 drv->auth_ssid_len = params->ssid_len; 5443 } else 5444 drv->auth_ssid_len = 0; 5445 5446 5447 os_free(drv->auth_ie); 5448 drv->auth_ie = NULL; 5449 drv->auth_ie_len = 0; 5450 if (params->ie) { 5451 drv->auth_ie = os_malloc(params->ie_len); 5452 if (drv->auth_ie) { 5453 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 5454 drv->auth_ie_len = params->ie_len; 5455 } 5456 } 5457 5458 for (i = 0; i < 4; i++) { 5459 if (params->wep_key[i] && params->wep_key_len[i] && 5460 params->wep_key_len[i] <= 16) { 5461 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 5462 params->wep_key_len[i]); 5463 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 5464 } else 5465 drv->auth_wep_key_len[i] = 0; 5466 } 5467} 5468 5469 5470static int wpa_driver_nl80211_authenticate( 5471 struct i802_bss *bss, struct wpa_driver_auth_params *params) 5472{ 5473 struct wpa_driver_nl80211_data *drv = bss->drv; 5474 int ret = -1, i; 5475 struct nl_msg *msg; 5476 enum nl80211_auth_type type; 5477 enum nl80211_iftype nlmode; 5478 int count = 0; 5479 int is_retry; 5480 5481 is_retry = drv->retry_auth; 5482 drv->retry_auth = 0; 5483 5484 nl80211_mark_disconnected(drv); 5485 os_memset(drv->auth_bssid, 0, ETH_ALEN); 5486 if (params->bssid) 5487 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN); 5488 else 5489 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN); 5490 /* FIX: IBSS mode */ 5491 nlmode = params->p2p ? 5492 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 5493 if (drv->nlmode != nlmode && 5494 wpa_driver_nl80211_set_mode(bss, nlmode) < 0) 5495 return -1; 5496 5497retry: 5498 msg = nlmsg_alloc(); 5499 if (!msg) 5500 return -1; 5501 5502 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 5503 drv->ifindex); 5504 5505 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 5506 5507 for (i = 0; i < 4; i++) { 5508 if (!params->wep_key[i]) 5509 continue; 5510 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP, 5511 NULL, i, 5512 i == params->wep_tx_keyidx, NULL, 0, 5513 params->wep_key[i], 5514 params->wep_key_len[i]); 5515 if (params->wep_tx_keyidx != i) 5516 continue; 5517 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 5518 params->wep_key[i], params->wep_key_len[i])) { 5519 nlmsg_free(msg); 5520 return -1; 5521 } 5522 } 5523 5524 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5525 if (params->bssid) { 5526 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 5527 MAC2STR(params->bssid)); 5528 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 5529 } 5530 if (params->freq) { 5531 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 5532 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 5533 } 5534 if (params->ssid) { 5535 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 5536 params->ssid, params->ssid_len); 5537 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5538 params->ssid); 5539 } 5540 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 5541 if (params->ie) 5542 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 5543 if (params->sae_data) { 5544 wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data, 5545 params->sae_data_len); 5546 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len, 5547 params->sae_data); 5548 } 5549 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 5550 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 5551 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 5552 type = NL80211_AUTHTYPE_SHARED_KEY; 5553 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 5554 type = NL80211_AUTHTYPE_NETWORK_EAP; 5555 else if (params->auth_alg & WPA_AUTH_ALG_FT) 5556 type = NL80211_AUTHTYPE_FT; 5557 else if (params->auth_alg & WPA_AUTH_ALG_SAE) 5558 type = NL80211_AUTHTYPE_SAE; 5559 else 5560 goto nla_put_failure; 5561 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 5562 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 5563 if (params->local_state_change) { 5564 wpa_printf(MSG_DEBUG, " * Local state change only"); 5565 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 5566 } 5567 5568 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5569 msg = NULL; 5570 if (ret) { 5571 wpa_dbg(drv->ctx, MSG_DEBUG, 5572 "nl80211: MLME command failed (auth): ret=%d (%s)", 5573 ret, strerror(-ret)); 5574 count++; 5575 if (ret == -EALREADY && count == 1 && params->bssid && 5576 !params->local_state_change) { 5577 /* 5578 * mac80211 does not currently accept new 5579 * authentication if we are already authenticated. As a 5580 * workaround, force deauthentication and try again. 5581 */ 5582 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 5583 "after forced deauthentication"); 5584 wpa_driver_nl80211_deauthenticate( 5585 bss, params->bssid, 5586 WLAN_REASON_PREV_AUTH_NOT_VALID); 5587 nlmsg_free(msg); 5588 goto retry; 5589 } 5590 5591 if (ret == -ENOENT && params->freq && !is_retry) { 5592 /* 5593 * cfg80211 has likely expired the BSS entry even 5594 * though it was previously available in our internal 5595 * BSS table. To recover quickly, start a single 5596 * channel scan on the specified channel. 5597 */ 5598 struct wpa_driver_scan_params scan; 5599 int freqs[2]; 5600 5601 os_memset(&scan, 0, sizeof(scan)); 5602 scan.num_ssids = 1; 5603 if (params->ssid) { 5604 scan.ssids[0].ssid = params->ssid; 5605 scan.ssids[0].ssid_len = params->ssid_len; 5606 } 5607 freqs[0] = params->freq; 5608 freqs[1] = 0; 5609 scan.freqs = freqs; 5610 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 5611 "channel scan to refresh cfg80211 BSS " 5612 "entry"); 5613 ret = wpa_driver_nl80211_scan(bss, &scan); 5614 if (ret == 0) { 5615 nl80211_copy_auth_params(drv, params); 5616 drv->scan_for_auth = 1; 5617 } 5618 } else if (is_retry) { 5619 /* 5620 * Need to indicate this with an event since the return 5621 * value from the retry is not delivered to core code. 5622 */ 5623 union wpa_event_data event; 5624 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 5625 "failed"); 5626 os_memset(&event, 0, sizeof(event)); 5627 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 5628 ETH_ALEN); 5629 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 5630 &event); 5631 } 5632 5633 goto nla_put_failure; 5634 } 5635 ret = 0; 5636 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 5637 "successfully"); 5638 5639nla_put_failure: 5640 nlmsg_free(msg); 5641 return ret; 5642} 5643 5644 5645static int wpa_driver_nl80211_authenticate_retry( 5646 struct wpa_driver_nl80211_data *drv) 5647{ 5648 struct wpa_driver_auth_params params; 5649 struct i802_bss *bss = drv->first_bss; 5650 int i; 5651 5652 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 5653 5654 os_memset(¶ms, 0, sizeof(params)); 5655 params.freq = drv->auth_freq; 5656 params.auth_alg = drv->auth_alg; 5657 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 5658 params.local_state_change = drv->auth_local_state_change; 5659 params.p2p = drv->auth_p2p; 5660 5661 if (!is_zero_ether_addr(drv->auth_bssid_)) 5662 params.bssid = drv->auth_bssid_; 5663 5664 if (drv->auth_ssid_len) { 5665 params.ssid = drv->auth_ssid; 5666 params.ssid_len = drv->auth_ssid_len; 5667 } 5668 5669 params.ie = drv->auth_ie; 5670 params.ie_len = drv->auth_ie_len; 5671 5672 for (i = 0; i < 4; i++) { 5673 if (drv->auth_wep_key_len[i]) { 5674 params.wep_key[i] = drv->auth_wep_key[i]; 5675 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 5676 } 5677 } 5678 5679 drv->retry_auth = 1; 5680 return wpa_driver_nl80211_authenticate(bss, ¶ms); 5681} 5682 5683 5684struct phy_info_arg { 5685 u16 *num_modes; 5686 struct hostapd_hw_modes *modes; 5687 int last_mode, last_chan_idx; 5688}; 5689 5690static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, 5691 struct nlattr *ampdu_factor, 5692 struct nlattr *ampdu_density, 5693 struct nlattr *mcs_set) 5694{ 5695 if (capa) 5696 mode->ht_capab = nla_get_u16(capa); 5697 5698 if (ampdu_factor) 5699 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; 5700 5701 if (ampdu_density) 5702 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; 5703 5704 if (mcs_set && nla_len(mcs_set) >= 16) { 5705 u8 *mcs; 5706 mcs = nla_data(mcs_set); 5707 os_memcpy(mode->mcs_set, mcs, 16); 5708 } 5709} 5710 5711 5712static void phy_info_vht_capa(struct hostapd_hw_modes *mode, 5713 struct nlattr *capa, 5714 struct nlattr *mcs_set) 5715{ 5716 if (capa) 5717 mode->vht_capab = nla_get_u32(capa); 5718 5719 if (mcs_set && nla_len(mcs_set) >= 8) { 5720 u8 *mcs; 5721 mcs = nla_data(mcs_set); 5722 os_memcpy(mode->vht_mcs_set, mcs, 8); 5723 } 5724} 5725 5726 5727static void phy_info_freq(struct hostapd_hw_modes *mode, 5728 struct hostapd_channel_data *chan, 5729 struct nlattr *tb_freq[]) 5730{ 5731 u8 channel; 5732 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 5733 chan->flag = 0; 5734 if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES) 5735 chan->chan = channel; 5736 5737 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 5738 chan->flag |= HOSTAPD_CHAN_DISABLED; 5739 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 5740 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN; 5741 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 5742 chan->flag |= HOSTAPD_CHAN_NO_IBSS; 5743 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 5744 chan->flag |= HOSTAPD_CHAN_RADAR; 5745 5746 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) { 5747 enum nl80211_dfs_state state = 5748 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]); 5749 5750 switch (state) { 5751 case NL80211_DFS_USABLE: 5752 chan->flag |= HOSTAPD_CHAN_DFS_USABLE; 5753 break; 5754 case NL80211_DFS_AVAILABLE: 5755 chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE; 5756 break; 5757 case NL80211_DFS_UNAVAILABLE: 5758 chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE; 5759 break; 5760 } 5761 } 5762} 5763 5764 5765static int phy_info_freqs(struct phy_info_arg *phy_info, 5766 struct hostapd_hw_modes *mode, struct nlattr *tb) 5767{ 5768 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 5769 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 5770 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 5771 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 5772 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 5773 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 5774 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 5775 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 }, 5776 }; 5777 int new_channels = 0; 5778 struct hostapd_channel_data *channel; 5779 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 5780 struct nlattr *nl_freq; 5781 int rem_freq, idx; 5782 5783 if (tb == NULL) 5784 return NL_OK; 5785 5786 nla_for_each_nested(nl_freq, tb, rem_freq) { 5787 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5788 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5789 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5790 continue; 5791 new_channels++; 5792 } 5793 5794 channel = os_realloc_array(mode->channels, 5795 mode->num_channels + new_channels, 5796 sizeof(struct hostapd_channel_data)); 5797 if (!channel) 5798 return NL_SKIP; 5799 5800 mode->channels = channel; 5801 mode->num_channels += new_channels; 5802 5803 idx = phy_info->last_chan_idx; 5804 5805 nla_for_each_nested(nl_freq, tb, rem_freq) { 5806 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 5807 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 5808 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 5809 continue; 5810 phy_info_freq(mode, &mode->channels[idx], tb_freq); 5811 idx++; 5812 } 5813 phy_info->last_chan_idx = idx; 5814 5815 return NL_OK; 5816} 5817 5818 5819static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 5820{ 5821 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 5822 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 5823 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 5824 { .type = NLA_FLAG }, 5825 }; 5826 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 5827 struct nlattr *nl_rate; 5828 int rem_rate, idx; 5829 5830 if (tb == NULL) 5831 return NL_OK; 5832 5833 nla_for_each_nested(nl_rate, tb, rem_rate) { 5834 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5835 nla_data(nl_rate), nla_len(nl_rate), 5836 rate_policy); 5837 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5838 continue; 5839 mode->num_rates++; 5840 } 5841 5842 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 5843 if (!mode->rates) 5844 return NL_SKIP; 5845 5846 idx = 0; 5847 5848 nla_for_each_nested(nl_rate, tb, rem_rate) { 5849 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 5850 nla_data(nl_rate), nla_len(nl_rate), 5851 rate_policy); 5852 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 5853 continue; 5854 mode->rates[idx] = nla_get_u32( 5855 tb_rate[NL80211_BITRATE_ATTR_RATE]); 5856 idx++; 5857 } 5858 5859 return NL_OK; 5860} 5861 5862 5863static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 5864{ 5865 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 5866 struct hostapd_hw_modes *mode; 5867 int ret; 5868 5869 if (phy_info->last_mode != nl_band->nla_type) { 5870 mode = os_realloc_array(phy_info->modes, 5871 *phy_info->num_modes + 1, 5872 sizeof(*mode)); 5873 if (!mode) 5874 return NL_SKIP; 5875 phy_info->modes = mode; 5876 5877 mode = &phy_info->modes[*(phy_info->num_modes)]; 5878 os_memset(mode, 0, sizeof(*mode)); 5879 mode->mode = NUM_HOSTAPD_MODES; 5880 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN | 5881 HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN; 5882 5883 /* 5884 * Unsupported VHT MCS stream is defined as value 3, so the VHT 5885 * MCS RX/TX map must be initialized with 0xffff to mark all 8 5886 * possible streams as unsupported. This will be overridden if 5887 * driver advertises VHT support. 5888 */ 5889 mode->vht_mcs_set[0] = 0xff; 5890 mode->vht_mcs_set[1] = 0xff; 5891 mode->vht_mcs_set[4] = 0xff; 5892 mode->vht_mcs_set[5] = 0xff; 5893 5894 *(phy_info->num_modes) += 1; 5895 phy_info->last_mode = nl_band->nla_type; 5896 phy_info->last_chan_idx = 0; 5897 } else 5898 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 5899 5900 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 5901 nla_len(nl_band), NULL); 5902 5903 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 5904 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 5905 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 5906 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 5907 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 5908 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 5909 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 5910 if (ret != NL_OK) 5911 return ret; 5912 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 5913 if (ret != NL_OK) 5914 return ret; 5915 5916 return NL_OK; 5917} 5918 5919 5920static int phy_info_handler(struct nl_msg *msg, void *arg) 5921{ 5922 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 5923 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5924 struct phy_info_arg *phy_info = arg; 5925 struct nlattr *nl_band; 5926 int rem_band; 5927 5928 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5929 genlmsg_attrlen(gnlh, 0), NULL); 5930 5931 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 5932 return NL_SKIP; 5933 5934 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 5935 { 5936 int res = phy_info_band(phy_info, nl_band); 5937 if (res != NL_OK) 5938 return res; 5939 } 5940 5941 return NL_SKIP; 5942} 5943 5944 5945static struct hostapd_hw_modes * 5946wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, 5947 u16 *num_modes) 5948{ 5949 u16 m; 5950 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 5951 int i, mode11g_idx = -1; 5952 5953 /* heuristic to set up modes */ 5954 for (m = 0; m < *num_modes; m++) { 5955 if (!modes[m].num_channels) 5956 continue; 5957 if (modes[m].channels[0].freq < 4000) { 5958 modes[m].mode = HOSTAPD_MODE_IEEE80211B; 5959 for (i = 0; i < modes[m].num_rates; i++) { 5960 if (modes[m].rates[i] > 200) { 5961 modes[m].mode = HOSTAPD_MODE_IEEE80211G; 5962 break; 5963 } 5964 } 5965 } else if (modes[m].channels[0].freq > 50000) 5966 modes[m].mode = HOSTAPD_MODE_IEEE80211AD; 5967 else 5968 modes[m].mode = HOSTAPD_MODE_IEEE80211A; 5969 } 5970 5971 /* If only 802.11g mode is included, use it to construct matching 5972 * 802.11b mode data. */ 5973 5974 for (m = 0; m < *num_modes; m++) { 5975 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 5976 return modes; /* 802.11b already included */ 5977 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 5978 mode11g_idx = m; 5979 } 5980 5981 if (mode11g_idx < 0) 5982 return modes; /* 2.4 GHz band not supported at all */ 5983 5984 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 5985 if (nmodes == NULL) 5986 return modes; /* Could not add 802.11b mode */ 5987 5988 mode = &nmodes[*num_modes]; 5989 os_memset(mode, 0, sizeof(*mode)); 5990 (*num_modes)++; 5991 modes = nmodes; 5992 5993 mode->mode = HOSTAPD_MODE_IEEE80211B; 5994 5995 mode11g = &modes[mode11g_idx]; 5996 mode->num_channels = mode11g->num_channels; 5997 mode->channels = os_malloc(mode11g->num_channels * 5998 sizeof(struct hostapd_channel_data)); 5999 if (mode->channels == NULL) { 6000 (*num_modes)--; 6001 return modes; /* Could not add 802.11b mode */ 6002 } 6003 os_memcpy(mode->channels, mode11g->channels, 6004 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 6005 6006 mode->num_rates = 0; 6007 mode->rates = os_malloc(4 * sizeof(int)); 6008 if (mode->rates == NULL) { 6009 os_free(mode->channels); 6010 (*num_modes)--; 6011 return modes; /* Could not add 802.11b mode */ 6012 } 6013 6014 for (i = 0; i < mode11g->num_rates; i++) { 6015 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 6016 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 6017 continue; 6018 mode->rates[mode->num_rates] = mode11g->rates[i]; 6019 mode->num_rates++; 6020 if (mode->num_rates == 4) 6021 break; 6022 } 6023 6024 if (mode->num_rates == 0) { 6025 os_free(mode->channels); 6026 os_free(mode->rates); 6027 (*num_modes)--; 6028 return modes; /* No 802.11b rates */ 6029 } 6030 6031 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 6032 "information"); 6033 6034 return modes; 6035} 6036 6037 6038static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 6039 int end) 6040{ 6041 int c; 6042 6043 for (c = 0; c < mode->num_channels; c++) { 6044 struct hostapd_channel_data *chan = &mode->channels[c]; 6045 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 6046 chan->flag |= HOSTAPD_CHAN_HT40; 6047 } 6048} 6049 6050 6051static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 6052 int end) 6053{ 6054 int c; 6055 6056 for (c = 0; c < mode->num_channels; c++) { 6057 struct hostapd_channel_data *chan = &mode->channels[c]; 6058 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 6059 continue; 6060 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 6061 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 6062 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 6063 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 6064 } 6065} 6066 6067 6068static void nl80211_reg_rule_max_eirp(struct nlattr *tb[], 6069 struct phy_info_arg *results) 6070{ 6071 u32 start, end, max_eirp; 6072 u16 m; 6073 6074 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 6075 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 6076 tb[NL80211_ATTR_POWER_RULE_MAX_EIRP] == NULL) 6077 return; 6078 6079 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 6080 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 6081 max_eirp = nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100; 6082 6083 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u mBm", 6084 start, end, max_eirp); 6085 6086 for (m = 0; m < *results->num_modes; m++) { 6087 int c; 6088 struct hostapd_hw_modes *mode = &results->modes[m]; 6089 6090 for (c = 0; c < mode->num_channels; c++) { 6091 struct hostapd_channel_data *chan = &mode->channels[c]; 6092 if ((u32) chan->freq - 10 >= start && 6093 (u32) chan->freq + 10 <= end) 6094 chan->max_tx_power = max_eirp; 6095 } 6096 } 6097} 6098 6099 6100static void nl80211_reg_rule_ht40(struct nlattr *tb[], 6101 struct phy_info_arg *results) 6102{ 6103 u32 start, end, max_bw; 6104 u16 m; 6105 6106 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 6107 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 6108 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 6109 return; 6110 6111 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 6112 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 6113 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 6114 6115 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 6116 start, end, max_bw); 6117 if (max_bw < 40) 6118 return; 6119 6120 for (m = 0; m < *results->num_modes; m++) { 6121 if (!(results->modes[m].ht_capab & 6122 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 6123 continue; 6124 nl80211_set_ht40_mode(&results->modes[m], start, end); 6125 } 6126} 6127 6128 6129static void nl80211_reg_rule_sec(struct nlattr *tb[], 6130 struct phy_info_arg *results) 6131{ 6132 u32 start, end, max_bw; 6133 u16 m; 6134 6135 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 6136 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 6137 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 6138 return; 6139 6140 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 6141 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 6142 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 6143 6144 if (max_bw < 20) 6145 return; 6146 6147 for (m = 0; m < *results->num_modes; m++) { 6148 if (!(results->modes[m].ht_capab & 6149 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 6150 continue; 6151 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 6152 } 6153} 6154 6155 6156static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start, 6157 int end) 6158{ 6159 int c; 6160 6161 for (c = 0; c < mode->num_channels; c++) { 6162 struct hostapd_channel_data *chan = &mode->channels[c]; 6163 if (chan->freq - 10 >= start && chan->freq + 70 <= end) 6164 chan->flag |= HOSTAPD_CHAN_VHT_10_70; 6165 6166 if (chan->freq - 30 >= start && chan->freq + 50 <= end) 6167 chan->flag |= HOSTAPD_CHAN_VHT_30_50; 6168 6169 if (chan->freq - 50 >= start && chan->freq + 30 <= end) 6170 chan->flag |= HOSTAPD_CHAN_VHT_50_30; 6171 6172 if (chan->freq - 70 >= start && chan->freq + 10 <= end) 6173 chan->flag |= HOSTAPD_CHAN_VHT_70_10; 6174 } 6175} 6176 6177 6178static void nl80211_reg_rule_vht(struct nlattr *tb[], 6179 struct phy_info_arg *results) 6180{ 6181 u32 start, end, max_bw; 6182 u16 m; 6183 6184 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 6185 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 6186 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 6187 return; 6188 6189 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 6190 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 6191 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 6192 6193 if (max_bw < 80) 6194 return; 6195 6196 for (m = 0; m < *results->num_modes; m++) { 6197 if (!(results->modes[m].ht_capab & 6198 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 6199 continue; 6200 /* TODO: use a real VHT support indication */ 6201 if (!results->modes[m].vht_capab) 6202 continue; 6203 6204 nl80211_set_vht_mode(&results->modes[m], start, end); 6205 } 6206} 6207 6208 6209static int nl80211_get_reg(struct nl_msg *msg, void *arg) 6210{ 6211 struct phy_info_arg *results = arg; 6212 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 6213 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 6214 struct nlattr *nl_rule; 6215 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 6216 int rem_rule; 6217 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 6218 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 6219 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 6220 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 6221 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 6222 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 6223 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 6224 }; 6225 6226 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 6227 genlmsg_attrlen(gnlh, 0), NULL); 6228 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 6229 !tb_msg[NL80211_ATTR_REG_RULES]) { 6230 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 6231 "available"); 6232 return NL_SKIP; 6233 } 6234 6235 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 6236 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 6237 6238 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 6239 { 6240 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 6241 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 6242 nl80211_reg_rule_ht40(tb_rule, results); 6243 nl80211_reg_rule_max_eirp(tb_rule, results); 6244 } 6245 6246 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 6247 { 6248 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 6249 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 6250 nl80211_reg_rule_sec(tb_rule, results); 6251 } 6252 6253 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 6254 { 6255 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 6256 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 6257 nl80211_reg_rule_vht(tb_rule, results); 6258 } 6259 6260 return NL_SKIP; 6261} 6262 6263 6264static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv, 6265 struct phy_info_arg *results) 6266{ 6267 struct nl_msg *msg; 6268 6269 msg = nlmsg_alloc(); 6270 if (!msg) 6271 return -ENOMEM; 6272 6273 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 6274 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 6275} 6276 6277 6278static struct hostapd_hw_modes * 6279wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 6280{ 6281 u32 feat; 6282 struct i802_bss *bss = priv; 6283 struct wpa_driver_nl80211_data *drv = bss->drv; 6284 struct nl_msg *msg; 6285 struct phy_info_arg result = { 6286 .num_modes = num_modes, 6287 .modes = NULL, 6288 .last_mode = -1, 6289 }; 6290 6291 *num_modes = 0; 6292 *flags = 0; 6293 6294 msg = nlmsg_alloc(); 6295 if (!msg) 6296 return NULL; 6297 6298 feat = get_nl80211_protocol_features(drv); 6299 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 6300 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 6301 else 6302 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 6303 6304 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 6305 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6306 6307 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 6308 nl80211_set_regulatory_flags(drv, &result); 6309 return wpa_driver_nl80211_postprocess_modes(result.modes, 6310 num_modes); 6311 } 6312 msg = NULL; 6313 nla_put_failure: 6314 nlmsg_free(msg); 6315 return NULL; 6316} 6317 6318 6319static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 6320 const void *data, size_t len, 6321 int encrypt, int noack) 6322{ 6323 __u8 rtap_hdr[] = { 6324 0x00, 0x00, /* radiotap version */ 6325 0x0e, 0x00, /* radiotap length */ 6326 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 6327 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 6328 0x00, /* padding */ 6329 0x00, 0x00, /* RX and TX flags to indicate that */ 6330 0x00, 0x00, /* this is the injected frame directly */ 6331 }; 6332 struct iovec iov[2] = { 6333 { 6334 .iov_base = &rtap_hdr, 6335 .iov_len = sizeof(rtap_hdr), 6336 }, 6337 { 6338 .iov_base = (void *) data, 6339 .iov_len = len, 6340 } 6341 }; 6342 struct msghdr msg = { 6343 .msg_name = NULL, 6344 .msg_namelen = 0, 6345 .msg_iov = iov, 6346 .msg_iovlen = 2, 6347 .msg_control = NULL, 6348 .msg_controllen = 0, 6349 .msg_flags = 0, 6350 }; 6351 int res; 6352 u16 txflags = 0; 6353 6354 if (encrypt) 6355 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 6356 6357 if (drv->monitor_sock < 0) { 6358 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 6359 "for %s", __func__); 6360 return -1; 6361 } 6362 6363 if (noack) 6364 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 6365 WPA_PUT_LE16(&rtap_hdr[12], txflags); 6366 6367 res = sendmsg(drv->monitor_sock, &msg, 0); 6368 if (res < 0) { 6369 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 6370 return -1; 6371 } 6372 return 0; 6373} 6374 6375 6376static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 6377 const void *data, size_t len, 6378 int encrypt, int noack, 6379 unsigned int freq, int no_cck, 6380 int offchanok, unsigned int wait_time) 6381{ 6382 struct wpa_driver_nl80211_data *drv = bss->drv; 6383 u64 cookie; 6384 int res; 6385 6386 if (freq == 0) { 6387 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u", 6388 bss->freq); 6389 freq = bss->freq; 6390 } 6391 6392 if (drv->use_monitor) { 6393 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_mntr", 6394 freq, bss->freq); 6395 return wpa_driver_nl80211_send_mntr(drv, data, len, 6396 encrypt, noack); 6397 } 6398 6399 wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd"); 6400 res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 6401 &cookie, no_cck, noack, offchanok); 6402 if (res == 0 && !noack) { 6403 const struct ieee80211_mgmt *mgmt; 6404 u16 fc; 6405 6406 mgmt = (const struct ieee80211_mgmt *) data; 6407 fc = le_to_host16(mgmt->frame_control); 6408 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 6409 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) { 6410 wpa_printf(MSG_MSGDUMP, 6411 "nl80211: Update send_action_cookie from 0x%llx to 0x%llx", 6412 (long long unsigned int) 6413 drv->send_action_cookie, 6414 (long long unsigned int) cookie); 6415 drv->send_action_cookie = cookie; 6416 } 6417 } 6418 6419 return res; 6420} 6421 6422 6423static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data, 6424 size_t data_len, int noack, 6425 unsigned int freq, int no_cck, 6426 int offchanok, 6427 unsigned int wait_time) 6428{ 6429 struct wpa_driver_nl80211_data *drv = bss->drv; 6430 struct ieee80211_mgmt *mgmt; 6431 int encrypt = 1; 6432 u16 fc; 6433 6434 mgmt = (struct ieee80211_mgmt *) data; 6435 fc = le_to_host16(mgmt->frame_control); 6436 wpa_printf(MSG_DEBUG, "nl80211: send_mlme - noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x nlmode=%d", 6437 noack, freq, no_cck, offchanok, wait_time, fc, drv->nlmode); 6438 6439 if ((is_sta_interface(drv->nlmode) || 6440 drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) && 6441 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 6442 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 6443 /* 6444 * The use of last_mgmt_freq is a bit of a hack, 6445 * but it works due to the single-threaded nature 6446 * of wpa_supplicant. 6447 */ 6448 if (freq == 0) { 6449 wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d", 6450 drv->last_mgmt_freq); 6451 freq = drv->last_mgmt_freq; 6452 } 6453 return nl80211_send_frame_cmd(bss, freq, 0, 6454 data, data_len, NULL, 1, noack, 6455 1); 6456 } 6457 6458 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 6459 if (freq == 0) { 6460 wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d", 6461 bss->freq); 6462 freq = bss->freq; 6463 } 6464 return nl80211_send_frame_cmd(bss, freq, 6465 (int) freq == bss->freq ? 0 : 6466 wait_time, 6467 data, data_len, 6468 &drv->send_action_cookie, 6469 no_cck, noack, offchanok); 6470 } 6471 6472 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 6473 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 6474 /* 6475 * Only one of the authentication frame types is encrypted. 6476 * In order for static WEP encryption to work properly (i.e., 6477 * to not encrypt the frame), we need to tell mac80211 about 6478 * the frames that must not be encrypted. 6479 */ 6480 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 6481 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 6482 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 6483 encrypt = 0; 6484 } 6485 6486 wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame"); 6487 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 6488 noack, freq, no_cck, offchanok, 6489 wait_time); 6490} 6491 6492 6493static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 6494 int slot, int ht_opmode, int ap_isolate, 6495 int *basic_rates) 6496{ 6497 struct wpa_driver_nl80211_data *drv = bss->drv; 6498 struct nl_msg *msg; 6499 6500 msg = nlmsg_alloc(); 6501 if (!msg) 6502 return -ENOMEM; 6503 6504 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 6505 6506 if (cts >= 0) 6507 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 6508 if (preamble >= 0) 6509 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 6510 if (slot >= 0) 6511 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 6512 if (ht_opmode >= 0) 6513 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 6514 if (ap_isolate >= 0) 6515 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 6516 6517 if (basic_rates) { 6518 u8 rates[NL80211_MAX_SUPP_RATES]; 6519 u8 rates_len = 0; 6520 int i; 6521 6522 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 6523 i++) 6524 rates[rates_len++] = basic_rates[i] / 5; 6525 6526 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 6527 } 6528 6529 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6530 6531 return send_and_recv_msgs(drv, msg, NULL, NULL); 6532 nla_put_failure: 6533 nlmsg_free(msg); 6534 return -ENOBUFS; 6535} 6536 6537 6538static int wpa_driver_nl80211_set_acl(void *priv, 6539 struct hostapd_acl_params *params) 6540{ 6541 struct i802_bss *bss = priv; 6542 struct wpa_driver_nl80211_data *drv = bss->drv; 6543 struct nl_msg *msg; 6544 struct nlattr *acl; 6545 unsigned int i; 6546 int ret = 0; 6547 6548 if (!(drv->capa.max_acl_mac_addrs)) 6549 return -ENOTSUP; 6550 6551 if (params->num_mac_acl > drv->capa.max_acl_mac_addrs) 6552 return -ENOTSUP; 6553 6554 msg = nlmsg_alloc(); 6555 if (!msg) 6556 return -ENOMEM; 6557 6558 wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)", 6559 params->acl_policy ? "Accept" : "Deny", params->num_mac_acl); 6560 6561 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_MAC_ACL); 6562 6563 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6564 6565 NLA_PUT_U32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ? 6566 NL80211_ACL_POLICY_DENY_UNLESS_LISTED : 6567 NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED); 6568 6569 acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS); 6570 if (acl == NULL) 6571 goto nla_put_failure; 6572 6573 for (i = 0; i < params->num_mac_acl; i++) 6574 NLA_PUT(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr); 6575 6576 nla_nest_end(msg, acl); 6577 6578 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6579 msg = NULL; 6580 if (ret) { 6581 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)", 6582 ret, strerror(-ret)); 6583 } 6584 6585nla_put_failure: 6586 nlmsg_free(msg); 6587 6588 return ret; 6589} 6590 6591 6592static int wpa_driver_nl80211_set_ap(void *priv, 6593 struct wpa_driver_ap_params *params) 6594{ 6595 struct i802_bss *bss = priv; 6596 struct wpa_driver_nl80211_data *drv = bss->drv; 6597 struct nl_msg *msg; 6598 u8 cmd = NL80211_CMD_NEW_BEACON; 6599 int ret; 6600 int beacon_set; 6601 int ifindex = if_nametoindex(bss->ifname); 6602 int num_suites; 6603 u32 suites[10]; 6604 u32 ver; 6605 6606 beacon_set = bss->beacon_set; 6607 6608 msg = nlmsg_alloc(); 6609 if (!msg) 6610 return -ENOMEM; 6611 6612 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 6613 beacon_set); 6614 if (beacon_set) 6615 cmd = NL80211_CMD_SET_BEACON; 6616 6617 nl80211_cmd(drv, msg, 0, cmd); 6618 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head", 6619 params->head, params->head_len); 6620 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 6621 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail", 6622 params->tail, params->tail_len); 6623 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 6624 wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex); 6625 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 6626 wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int); 6627 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 6628 wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period); 6629 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 6630 wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid", 6631 params->ssid, params->ssid_len); 6632 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6633 params->ssid); 6634 if (params->proberesp && params->proberesp_len) { 6635 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)", 6636 params->proberesp, params->proberesp_len); 6637 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 6638 params->proberesp); 6639 } 6640 switch (params->hide_ssid) { 6641 case NO_SSID_HIDING: 6642 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use"); 6643 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 6644 NL80211_HIDDEN_SSID_NOT_IN_USE); 6645 break; 6646 case HIDDEN_SSID_ZERO_LEN: 6647 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len"); 6648 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 6649 NL80211_HIDDEN_SSID_ZERO_LEN); 6650 break; 6651 case HIDDEN_SSID_ZERO_CONTENTS: 6652 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents"); 6653 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 6654 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 6655 break; 6656 } 6657 wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy); 6658 if (params->privacy) 6659 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 6660 wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs); 6661 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 6662 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 6663 /* Leave out the attribute */ 6664 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 6665 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 6666 NL80211_AUTHTYPE_SHARED_KEY); 6667 else 6668 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 6669 NL80211_AUTHTYPE_OPEN_SYSTEM); 6670 6671 wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version); 6672 ver = 0; 6673 if (params->wpa_version & WPA_PROTO_WPA) 6674 ver |= NL80211_WPA_VERSION_1; 6675 if (params->wpa_version & WPA_PROTO_RSN) 6676 ver |= NL80211_WPA_VERSION_2; 6677 if (ver) 6678 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 6679 6680 wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x", 6681 params->key_mgmt_suites); 6682 num_suites = 0; 6683 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 6684 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 6685 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 6686 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 6687 if (num_suites) { 6688 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 6689 num_suites * sizeof(u32), suites); 6690 } 6691 6692 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 6693 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 6694 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 6695 6696 wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x", 6697 params->pairwise_ciphers); 6698 num_suites = 0; 6699 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 6700 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 6701 if (params->pairwise_ciphers & WPA_CIPHER_GCMP) 6702 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP; 6703 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 6704 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 6705 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 6706 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 6707 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 6708 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 6709 if (num_suites) { 6710 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 6711 num_suites * sizeof(u32), suites); 6712 } 6713 6714 wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x", 6715 params->group_cipher); 6716 switch (params->group_cipher) { 6717 case WPA_CIPHER_CCMP: 6718 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 6719 WLAN_CIPHER_SUITE_CCMP); 6720 break; 6721 case WPA_CIPHER_GCMP: 6722 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 6723 WLAN_CIPHER_SUITE_GCMP); 6724 break; 6725 case WPA_CIPHER_TKIP: 6726 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 6727 WLAN_CIPHER_SUITE_TKIP); 6728 break; 6729 case WPA_CIPHER_WEP104: 6730 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 6731 WLAN_CIPHER_SUITE_WEP104); 6732 break; 6733 case WPA_CIPHER_WEP40: 6734 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 6735 WLAN_CIPHER_SUITE_WEP40); 6736 break; 6737 } 6738 6739 if (params->beacon_ies) { 6740 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies", 6741 params->beacon_ies); 6742 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 6743 wpabuf_head(params->beacon_ies)); 6744 } 6745 if (params->proberesp_ies) { 6746 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies", 6747 params->proberesp_ies); 6748 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 6749 wpabuf_len(params->proberesp_ies), 6750 wpabuf_head(params->proberesp_ies)); 6751 } 6752 if (params->assocresp_ies) { 6753 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies", 6754 params->assocresp_ies); 6755 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 6756 wpabuf_len(params->assocresp_ies), 6757 wpabuf_head(params->assocresp_ies)); 6758 } 6759 6760 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) { 6761 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d", 6762 params->ap_max_inactivity); 6763 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT, 6764 params->ap_max_inactivity); 6765 } 6766 6767 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6768 if (ret) { 6769 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 6770 ret, strerror(-ret)); 6771 } else { 6772 bss->beacon_set = 1; 6773 nl80211_set_bss(bss, params->cts_protect, params->preamble, 6774 params->short_slot_time, params->ht_opmode, 6775 params->isolate, params->basic_rates); 6776 } 6777 return ret; 6778 nla_put_failure: 6779 nlmsg_free(msg); 6780 return -ENOBUFS; 6781} 6782 6783 6784static int nl80211_put_freq_params(struct nl_msg *msg, 6785 struct hostapd_freq_params *freq) 6786{ 6787 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq); 6788 if (freq->vht_enabled) { 6789 switch (freq->bandwidth) { 6790 case 20: 6791 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6792 NL80211_CHAN_WIDTH_20); 6793 break; 6794 case 40: 6795 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6796 NL80211_CHAN_WIDTH_40); 6797 break; 6798 case 80: 6799 if (freq->center_freq2) 6800 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6801 NL80211_CHAN_WIDTH_80P80); 6802 else 6803 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6804 NL80211_CHAN_WIDTH_80); 6805 break; 6806 case 160: 6807 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 6808 NL80211_CHAN_WIDTH_160); 6809 break; 6810 default: 6811 return -EINVAL; 6812 } 6813 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1); 6814 if (freq->center_freq2) 6815 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2, 6816 freq->center_freq2); 6817 } else if (freq->ht_enabled) { 6818 switch (freq->sec_channel_offset) { 6819 case -1: 6820 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6821 NL80211_CHAN_HT40MINUS); 6822 break; 6823 case 1: 6824 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6825 NL80211_CHAN_HT40PLUS); 6826 break; 6827 default: 6828 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 6829 NL80211_CHAN_HT20); 6830 break; 6831 } 6832 } 6833 return 0; 6834 6835nla_put_failure: 6836 return -ENOBUFS; 6837} 6838 6839 6840static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 6841 struct hostapd_freq_params *freq) 6842{ 6843 struct wpa_driver_nl80211_data *drv = bss->drv; 6844 struct nl_msg *msg; 6845 int ret; 6846 6847 wpa_printf(MSG_DEBUG, 6848 "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 6849 freq->freq, freq->ht_enabled, freq->vht_enabled, 6850 freq->bandwidth, freq->center_freq1, freq->center_freq2); 6851 msg = nlmsg_alloc(); 6852 if (!msg) 6853 return -1; 6854 6855 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 6856 6857 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6858 if (nl80211_put_freq_params(msg, freq) < 0) 6859 goto nla_put_failure; 6860 6861 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6862 msg = NULL; 6863 if (ret == 0) { 6864 bss->freq = freq->freq; 6865 return 0; 6866 } 6867 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 6868 "%d (%s)", freq->freq, ret, strerror(-ret)); 6869nla_put_failure: 6870 nlmsg_free(msg); 6871 return -1; 6872} 6873 6874 6875static u32 sta_flags_nl80211(int flags) 6876{ 6877 u32 f = 0; 6878 6879 if (flags & WPA_STA_AUTHORIZED) 6880 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 6881 if (flags & WPA_STA_WMM) 6882 f |= BIT(NL80211_STA_FLAG_WME); 6883 if (flags & WPA_STA_SHORT_PREAMBLE) 6884 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 6885 if (flags & WPA_STA_MFP) 6886 f |= BIT(NL80211_STA_FLAG_MFP); 6887 if (flags & WPA_STA_TDLS_PEER) 6888 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 6889 6890 return f; 6891} 6892 6893 6894static int wpa_driver_nl80211_sta_add(void *priv, 6895 struct hostapd_sta_add_params *params) 6896{ 6897 struct i802_bss *bss = priv; 6898 struct wpa_driver_nl80211_data *drv = bss->drv; 6899 struct nl_msg *msg; 6900 struct nl80211_sta_flag_update upd; 6901 int ret = -ENOBUFS; 6902 6903 if ((params->flags & WPA_STA_TDLS_PEER) && 6904 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 6905 return -EOPNOTSUPP; 6906 6907 msg = nlmsg_alloc(); 6908 if (!msg) 6909 return -ENOMEM; 6910 6911 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR, 6912 params->set ? "Set" : "Add", MAC2STR(params->addr)); 6913 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 6914 NL80211_CMD_NEW_STATION); 6915 6916 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6917 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 6918 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 6919 params->supp_rates); 6920 wpa_hexdump(MSG_DEBUG, " * supported rates", params->supp_rates, 6921 params->supp_rates_len); 6922 if (!params->set) { 6923 if (params->aid) { 6924 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid); 6925 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 6926 } else { 6927 /* 6928 * cfg80211 validates that AID is non-zero, so we have 6929 * to make this a non-zero value for the TDLS case where 6930 * a dummy STA entry is used for now. 6931 */ 6932 wpa_printf(MSG_DEBUG, " * aid=1 (TDLS workaround)"); 6933 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1); 6934 } 6935 wpa_printf(MSG_DEBUG, " * listen_interval=%u", 6936 params->listen_interval); 6937 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 6938 params->listen_interval); 6939 } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) { 6940 wpa_printf(MSG_DEBUG, " * peer_aid=%u", params->aid); 6941 NLA_PUT_U16(msg, NL80211_ATTR_PEER_AID, params->aid); 6942 } 6943 if (params->ht_capabilities) { 6944 wpa_hexdump(MSG_DEBUG, " * ht_capabilities", 6945 (u8 *) params->ht_capabilities, 6946 sizeof(*params->ht_capabilities)); 6947 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 6948 sizeof(*params->ht_capabilities), 6949 params->ht_capabilities); 6950 } 6951 6952 if (params->vht_capabilities) { 6953 wpa_hexdump(MSG_DEBUG, " * vht_capabilities", 6954 (u8 *) params->vht_capabilities, 6955 sizeof(*params->vht_capabilities)); 6956 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, 6957 sizeof(*params->vht_capabilities), 6958 params->vht_capabilities); 6959 } 6960 6961 wpa_printf(MSG_DEBUG, " * capability=0x%x", params->capability); 6962 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability); 6963 6964 if (params->ext_capab) { 6965 wpa_hexdump(MSG_DEBUG, " * ext_capab", 6966 params->ext_capab, params->ext_capab_len); 6967 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY, 6968 params->ext_capab_len, params->ext_capab); 6969 } 6970 6971 os_memset(&upd, 0, sizeof(upd)); 6972 upd.mask = sta_flags_nl80211(params->flags); 6973 upd.set = upd.mask; 6974 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x", 6975 upd.set, upd.mask); 6976 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6977 6978 if (params->flags & WPA_STA_WMM) { 6979 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME); 6980 6981 if (!wme) 6982 goto nla_put_failure; 6983 6984 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo); 6985 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES, 6986 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 6987 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP, 6988 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) & 6989 WMM_QOSINFO_STA_SP_MASK); 6990 nla_nest_end(msg, wme); 6991 } 6992 6993 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6994 msg = NULL; 6995 if (ret) 6996 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 6997 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 6998 strerror(-ret)); 6999 if (ret == -EEXIST) 7000 ret = 0; 7001 nla_put_failure: 7002 nlmsg_free(msg); 7003 return ret; 7004} 7005 7006 7007static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr) 7008{ 7009 struct wpa_driver_nl80211_data *drv = bss->drv; 7010 struct nl_msg *msg; 7011 int ret; 7012 7013 msg = nlmsg_alloc(); 7014 if (!msg) 7015 return -ENOMEM; 7016 7017 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7018 7019 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7020 if_nametoindex(bss->ifname)); 7021 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7022 7023 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7024 wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR 7025 " --> %d (%s)", 7026 bss->ifname, MAC2STR(addr), ret, strerror(-ret)); 7027 if (ret == -ENOENT) 7028 return 0; 7029 return ret; 7030 nla_put_failure: 7031 nlmsg_free(msg); 7032 return -ENOBUFS; 7033} 7034 7035 7036static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 7037 int ifidx) 7038{ 7039 struct nl_msg *msg; 7040 7041 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 7042 7043 /* stop listening for EAPOL on this interface */ 7044 del_ifidx(drv, ifidx); 7045 7046 msg = nlmsg_alloc(); 7047 if (!msg) 7048 goto nla_put_failure; 7049 7050 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 7051 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 7052 7053 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 7054 return; 7055 msg = NULL; 7056 nla_put_failure: 7057 nlmsg_free(msg); 7058 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 7059} 7060 7061 7062static const char * nl80211_iftype_str(enum nl80211_iftype mode) 7063{ 7064 switch (mode) { 7065 case NL80211_IFTYPE_ADHOC: 7066 return "ADHOC"; 7067 case NL80211_IFTYPE_STATION: 7068 return "STATION"; 7069 case NL80211_IFTYPE_AP: 7070 return "AP"; 7071 case NL80211_IFTYPE_AP_VLAN: 7072 return "AP_VLAN"; 7073 case NL80211_IFTYPE_WDS: 7074 return "WDS"; 7075 case NL80211_IFTYPE_MONITOR: 7076 return "MONITOR"; 7077 case NL80211_IFTYPE_MESH_POINT: 7078 return "MESH_POINT"; 7079 case NL80211_IFTYPE_P2P_CLIENT: 7080 return "P2P_CLIENT"; 7081 case NL80211_IFTYPE_P2P_GO: 7082 return "P2P_GO"; 7083 case NL80211_IFTYPE_P2P_DEVICE: 7084 return "P2P_DEVICE"; 7085 default: 7086 return "unknown"; 7087 } 7088} 7089 7090 7091static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 7092 const char *ifname, 7093 enum nl80211_iftype iftype, 7094 const u8 *addr, int wds, 7095 int (*handler)(struct nl_msg *, void *), 7096 void *arg) 7097{ 7098 struct nl_msg *msg; 7099 int ifidx; 7100 int ret = -ENOBUFS; 7101 7102 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 7103 iftype, nl80211_iftype_str(iftype)); 7104 7105 msg = nlmsg_alloc(); 7106 if (!msg) 7107 return -1; 7108 7109 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 7110 if (nl80211_set_iface_id(msg, drv->first_bss) < 0) 7111 goto nla_put_failure; 7112 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 7113 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 7114 7115 if (iftype == NL80211_IFTYPE_MONITOR) { 7116 struct nlattr *flags; 7117 7118 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS); 7119 if (!flags) 7120 goto nla_put_failure; 7121 7122 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES); 7123 7124 nla_nest_end(msg, flags); 7125 } else if (wds) { 7126 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 7127 } 7128 7129 ret = send_and_recv_msgs(drv, msg, handler, arg); 7130 msg = NULL; 7131 if (ret) { 7132 nla_put_failure: 7133 nlmsg_free(msg); 7134 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 7135 ifname, ret, strerror(-ret)); 7136 return ret; 7137 } 7138 7139 if (iftype == NL80211_IFTYPE_P2P_DEVICE) 7140 return 0; 7141 7142 ifidx = if_nametoindex(ifname); 7143 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 7144 ifname, ifidx); 7145 7146 if (ifidx <= 0) 7147 return -1; 7148 7149 /* start listening for EAPOL on this interface */ 7150 add_ifidx(drv, ifidx); 7151 7152 if (addr && iftype != NL80211_IFTYPE_MONITOR && 7153 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 7154 nl80211_remove_iface(drv, ifidx); 7155 return -1; 7156 } 7157 7158 return ifidx; 7159} 7160 7161 7162static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 7163 const char *ifname, enum nl80211_iftype iftype, 7164 const u8 *addr, int wds, 7165 int (*handler)(struct nl_msg *, void *), 7166 void *arg, int use_existing) 7167{ 7168 int ret; 7169 7170 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler, 7171 arg); 7172 7173 /* if error occurred and interface exists already */ 7174 if (ret == -ENFILE && if_nametoindex(ifname)) { 7175 if (use_existing) { 7176 wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s", 7177 ifname); 7178 return -ENFILE; 7179 } 7180 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 7181 7182 /* Try to remove the interface that was already there. */ 7183 nl80211_remove_iface(drv, if_nametoindex(ifname)); 7184 7185 /* Try to create the interface again */ 7186 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 7187 wds, handler, arg); 7188 } 7189 7190 if (ret >= 0 && is_p2p_net_interface(iftype)) 7191 nl80211_disable_11b_rates(drv, ret, 1); 7192 7193 return ret; 7194} 7195 7196 7197static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 7198{ 7199 struct ieee80211_hdr *hdr; 7200 u16 fc; 7201 union wpa_event_data event; 7202 7203 hdr = (struct ieee80211_hdr *) buf; 7204 fc = le_to_host16(hdr->frame_control); 7205 7206 os_memset(&event, 0, sizeof(event)); 7207 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 7208 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 7209 event.tx_status.dst = hdr->addr1; 7210 event.tx_status.data = buf; 7211 event.tx_status.data_len = len; 7212 event.tx_status.ack = ok; 7213 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 7214} 7215 7216 7217static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 7218 u8 *buf, size_t len) 7219{ 7220 struct ieee80211_hdr *hdr = (void *)buf; 7221 u16 fc; 7222 union wpa_event_data event; 7223 7224 if (len < sizeof(*hdr)) 7225 return; 7226 7227 fc = le_to_host16(hdr->frame_control); 7228 7229 os_memset(&event, 0, sizeof(event)); 7230 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 7231 event.rx_from_unknown.addr = hdr->addr2; 7232 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 7233 (WLAN_FC_FROMDS | WLAN_FC_TODS); 7234 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 7235} 7236 7237 7238static void handle_frame(struct wpa_driver_nl80211_data *drv, 7239 u8 *buf, size_t len, int datarate, int ssi_signal) 7240{ 7241 struct ieee80211_hdr *hdr; 7242 u16 fc; 7243 union wpa_event_data event; 7244 7245 hdr = (struct ieee80211_hdr *) buf; 7246 fc = le_to_host16(hdr->frame_control); 7247 7248 switch (WLAN_FC_GET_TYPE(fc)) { 7249 case WLAN_FC_TYPE_MGMT: 7250 os_memset(&event, 0, sizeof(event)); 7251 event.rx_mgmt.frame = buf; 7252 event.rx_mgmt.frame_len = len; 7253 event.rx_mgmt.datarate = datarate; 7254 event.rx_mgmt.ssi_signal = ssi_signal; 7255 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 7256 break; 7257 case WLAN_FC_TYPE_CTRL: 7258 /* can only get here with PS-Poll frames */ 7259 wpa_printf(MSG_DEBUG, "CTRL"); 7260 from_unknown_sta(drv, buf, len); 7261 break; 7262 case WLAN_FC_TYPE_DATA: 7263 from_unknown_sta(drv, buf, len); 7264 break; 7265 } 7266} 7267 7268 7269static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 7270{ 7271 struct wpa_driver_nl80211_data *drv = eloop_ctx; 7272 int len; 7273 unsigned char buf[3000]; 7274 struct ieee80211_radiotap_iterator iter; 7275 int ret; 7276 int datarate = 0, ssi_signal = 0; 7277 int injected = 0, failed = 0, rxflags = 0; 7278 7279 len = recv(sock, buf, sizeof(buf), 0); 7280 if (len < 0) { 7281 wpa_printf(MSG_ERROR, "nl80211: Monitor socket recv failed: %s", 7282 strerror(errno)); 7283 return; 7284 } 7285 7286 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 7287 wpa_printf(MSG_INFO, "nl80211: received invalid radiotap frame"); 7288 return; 7289 } 7290 7291 while (1) { 7292 ret = ieee80211_radiotap_iterator_next(&iter); 7293 if (ret == -ENOENT) 7294 break; 7295 if (ret) { 7296 wpa_printf(MSG_INFO, "nl80211: received invalid radiotap frame (%d)", 7297 ret); 7298 return; 7299 } 7300 switch (iter.this_arg_index) { 7301 case IEEE80211_RADIOTAP_FLAGS: 7302 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 7303 len -= 4; 7304 break; 7305 case IEEE80211_RADIOTAP_RX_FLAGS: 7306 rxflags = 1; 7307 break; 7308 case IEEE80211_RADIOTAP_TX_FLAGS: 7309 injected = 1; 7310 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 7311 IEEE80211_RADIOTAP_F_TX_FAIL; 7312 break; 7313 case IEEE80211_RADIOTAP_DATA_RETRIES: 7314 break; 7315 case IEEE80211_RADIOTAP_CHANNEL: 7316 /* TODO: convert from freq/flags to channel number */ 7317 break; 7318 case IEEE80211_RADIOTAP_RATE: 7319 datarate = *iter.this_arg * 5; 7320 break; 7321 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: 7322 ssi_signal = (s8) *iter.this_arg; 7323 break; 7324 } 7325 } 7326 7327 if (rxflags && injected) 7328 return; 7329 7330 if (!injected) 7331 handle_frame(drv, buf + iter.max_length, 7332 len - iter.max_length, datarate, ssi_signal); 7333 else 7334 handle_tx_callback(drv->ctx, buf + iter.max_length, 7335 len - iter.max_length, !failed); 7336} 7337 7338 7339/* 7340 * we post-process the filter code later and rewrite 7341 * this to the offset to the last instruction 7342 */ 7343#define PASS 0xFF 7344#define FAIL 0xFE 7345 7346static struct sock_filter msock_filter_insns[] = { 7347 /* 7348 * do a little-endian load of the radiotap length field 7349 */ 7350 /* load lower byte into A */ 7351 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 7352 /* put it into X (== index register) */ 7353 BPF_STMT(BPF_MISC| BPF_TAX, 0), 7354 /* load upper byte into A */ 7355 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 7356 /* left-shift it by 8 */ 7357 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 7358 /* or with X */ 7359 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 7360 /* put result into X */ 7361 BPF_STMT(BPF_MISC| BPF_TAX, 0), 7362 7363 /* 7364 * Allow management frames through, this also gives us those 7365 * management frames that we sent ourselves with status 7366 */ 7367 /* load the lower byte of the IEEE 802.11 frame control field */ 7368 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 7369 /* mask off frame type and version */ 7370 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 7371 /* accept frame if it's both 0, fall through otherwise */ 7372 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 7373 7374 /* 7375 * TODO: add a bit to radiotap RX flags that indicates 7376 * that the sending station is not associated, then 7377 * add a filter here that filters on our DA and that flag 7378 * to allow us to deauth frames to that bad station. 7379 * 7380 * For now allow all To DS data frames through. 7381 */ 7382 /* load the IEEE 802.11 frame control field */ 7383 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 7384 /* mask off frame type, version and DS status */ 7385 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 7386 /* accept frame if version 0, type 2 and To DS, fall through otherwise 7387 */ 7388 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 7389 7390#if 0 7391 /* 7392 * drop non-data frames 7393 */ 7394 /* load the lower byte of the frame control field */ 7395 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 7396 /* mask off QoS bit */ 7397 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 7398 /* drop non-data frames */ 7399 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 7400#endif 7401 /* load the upper byte of the frame control field */ 7402 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 7403 /* mask off toDS/fromDS */ 7404 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 7405 /* accept WDS frames */ 7406 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 7407 7408 /* 7409 * add header length to index 7410 */ 7411 /* load the lower byte of the frame control field */ 7412 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 7413 /* mask off QoS bit */ 7414 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 7415 /* right shift it by 6 to give 0 or 2 */ 7416 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 7417 /* add data frame header length */ 7418 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 7419 /* add index, was start of 802.11 header */ 7420 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 7421 /* move to index, now start of LL header */ 7422 BPF_STMT(BPF_MISC | BPF_TAX, 0), 7423 7424 /* 7425 * Accept empty data frames, we use those for 7426 * polling activity. 7427 */ 7428 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 7429 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 7430 7431 /* 7432 * Accept EAPOL frames 7433 */ 7434 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 7435 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 7436 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 7437 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 7438 7439 /* keep these last two statements or change the code below */ 7440 /* return 0 == "DROP" */ 7441 BPF_STMT(BPF_RET | BPF_K, 0), 7442 /* return ~0 == "keep all" */ 7443 BPF_STMT(BPF_RET | BPF_K, ~0), 7444}; 7445 7446static struct sock_fprog msock_filter = { 7447 .len = ARRAY_SIZE(msock_filter_insns), 7448 .filter = msock_filter_insns, 7449}; 7450 7451 7452static int add_monitor_filter(int s) 7453{ 7454 int idx; 7455 7456 /* rewrite all PASS/FAIL jump offsets */ 7457 for (idx = 0; idx < msock_filter.len; idx++) { 7458 struct sock_filter *insn = &msock_filter_insns[idx]; 7459 7460 if (BPF_CLASS(insn->code) == BPF_JMP) { 7461 if (insn->code == (BPF_JMP|BPF_JA)) { 7462 if (insn->k == PASS) 7463 insn->k = msock_filter.len - idx - 2; 7464 else if (insn->k == FAIL) 7465 insn->k = msock_filter.len - idx - 3; 7466 } 7467 7468 if (insn->jt == PASS) 7469 insn->jt = msock_filter.len - idx - 2; 7470 else if (insn->jt == FAIL) 7471 insn->jt = msock_filter.len - idx - 3; 7472 7473 if (insn->jf == PASS) 7474 insn->jf = msock_filter.len - idx - 2; 7475 else if (insn->jf == FAIL) 7476 insn->jf = msock_filter.len - idx - 3; 7477 } 7478 } 7479 7480 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 7481 &msock_filter, sizeof(msock_filter))) { 7482 wpa_printf(MSG_ERROR, "nl80211: setsockopt(SO_ATTACH_FILTER) failed: %s", 7483 strerror(errno)); 7484 return -1; 7485 } 7486 7487 return 0; 7488} 7489 7490 7491static void nl80211_remove_monitor_interface( 7492 struct wpa_driver_nl80211_data *drv) 7493{ 7494 if (drv->monitor_refcount > 0) 7495 drv->monitor_refcount--; 7496 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface: refcount=%d", 7497 drv->monitor_refcount); 7498 if (drv->monitor_refcount > 0) 7499 return; 7500 7501 if (drv->monitor_ifidx >= 0) { 7502 nl80211_remove_iface(drv, drv->monitor_ifidx); 7503 drv->monitor_ifidx = -1; 7504 } 7505 if (drv->monitor_sock >= 0) { 7506 eloop_unregister_read_sock(drv->monitor_sock); 7507 close(drv->monitor_sock); 7508 drv->monitor_sock = -1; 7509 } 7510} 7511 7512 7513static int 7514nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 7515{ 7516 char buf[IFNAMSIZ]; 7517 struct sockaddr_ll ll; 7518 int optval; 7519 socklen_t optlen; 7520 7521 if (drv->monitor_ifidx >= 0) { 7522 drv->monitor_refcount++; 7523 wpa_printf(MSG_DEBUG, "nl80211: Re-use existing monitor interface: refcount=%d", 7524 drv->monitor_refcount); 7525 return 0; 7526 } 7527 7528 if (os_strncmp(drv->first_bss->ifname, "p2p-", 4) == 0) { 7529 /* 7530 * P2P interface name is of the format p2p-%s-%d. For monitor 7531 * interface name corresponding to P2P GO, replace "p2p-" with 7532 * "mon-" to retain the same interface name length and to 7533 * indicate that it is a monitor interface. 7534 */ 7535 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss->ifname + 4); 7536 } else { 7537 /* Non-P2P interface with AP functionality. */ 7538 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss->ifname); 7539 } 7540 7541 buf[IFNAMSIZ - 1] = '\0'; 7542 7543 drv->monitor_ifidx = 7544 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 7545 0, NULL, NULL, 0); 7546 7547 if (drv->monitor_ifidx == -EOPNOTSUPP) { 7548 /* 7549 * This is backward compatibility for a few versions of 7550 * the kernel only that didn't advertise the right 7551 * attributes for the only driver that then supported 7552 * AP mode w/o monitor -- ath6kl. 7553 */ 7554 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 7555 "monitor interface type - try to run without it"); 7556 drv->device_ap_sme = 1; 7557 } 7558 7559 if (drv->monitor_ifidx < 0) 7560 return -1; 7561 7562 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 7563 goto error; 7564 7565 memset(&ll, 0, sizeof(ll)); 7566 ll.sll_family = AF_PACKET; 7567 ll.sll_ifindex = drv->monitor_ifidx; 7568 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 7569 if (drv->monitor_sock < 0) { 7570 wpa_printf(MSG_ERROR, "nl80211: socket[PF_PACKET,SOCK_RAW] failed: %s", 7571 strerror(errno)); 7572 goto error; 7573 } 7574 7575 if (add_monitor_filter(drv->monitor_sock)) { 7576 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 7577 "interface; do filtering in user space"); 7578 /* This works, but will cost in performance. */ 7579 } 7580 7581 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 7582 wpa_printf(MSG_ERROR, "nl80211: monitor socket bind failed: %s", 7583 strerror(errno)); 7584 goto error; 7585 } 7586 7587 optlen = sizeof(optval); 7588 optval = 20; 7589 if (setsockopt 7590 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 7591 wpa_printf(MSG_ERROR, "nl80211: Failed to set socket priority: %s", 7592 strerror(errno)); 7593 goto error; 7594 } 7595 7596 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 7597 drv, NULL)) { 7598 wpa_printf(MSG_INFO, "nl80211: Could not register monitor read socket"); 7599 goto error; 7600 } 7601 7602 drv->monitor_refcount++; 7603 return 0; 7604 error: 7605 nl80211_remove_monitor_interface(drv); 7606 return -1; 7607} 7608 7609 7610static int nl80211_setup_ap(struct i802_bss *bss) 7611{ 7612 struct wpa_driver_nl80211_data *drv = bss->drv; 7613 7614 wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d", 7615 bss->ifname, drv->device_ap_sme, drv->use_monitor); 7616 7617 /* 7618 * Disable Probe Request reporting unless we need it in this way for 7619 * devices that include the AP SME, in the other case (unless using 7620 * monitor iface) we'll get it through the nl_mgmt socket instead. 7621 */ 7622 if (!drv->device_ap_sme) 7623 wpa_driver_nl80211_probe_req_report(bss, 0); 7624 7625 if (!drv->device_ap_sme && !drv->use_monitor) 7626 if (nl80211_mgmt_subscribe_ap(bss)) 7627 return -1; 7628 7629 if (drv->device_ap_sme && !drv->use_monitor) 7630 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 7631 return -1; 7632 7633 if (!drv->device_ap_sme && drv->use_monitor && 7634 nl80211_create_monitor_interface(drv) && 7635 !drv->device_ap_sme) 7636 return -1; 7637 7638 if (drv->device_ap_sme && 7639 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 7640 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 7641 "Probe Request frame reporting in AP mode"); 7642 /* Try to survive without this */ 7643 } 7644 7645 return 0; 7646} 7647 7648 7649static void nl80211_teardown_ap(struct i802_bss *bss) 7650{ 7651 struct wpa_driver_nl80211_data *drv = bss->drv; 7652 7653 wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d", 7654 bss->ifname, drv->device_ap_sme, drv->use_monitor); 7655 if (drv->device_ap_sme) { 7656 wpa_driver_nl80211_probe_req_report(bss, 0); 7657 if (!drv->use_monitor) 7658 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 7659 } else if (drv->use_monitor) 7660 nl80211_remove_monitor_interface(drv); 7661 else 7662 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 7663 7664 bss->beacon_set = 0; 7665} 7666 7667 7668static int nl80211_send_eapol_data(struct i802_bss *bss, 7669 const u8 *addr, const u8 *data, 7670 size_t data_len) 7671{ 7672 struct sockaddr_ll ll; 7673 int ret; 7674 7675 if (bss->drv->eapol_tx_sock < 0) { 7676 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 7677 return -1; 7678 } 7679 7680 os_memset(&ll, 0, sizeof(ll)); 7681 ll.sll_family = AF_PACKET; 7682 ll.sll_ifindex = bss->ifindex; 7683 ll.sll_protocol = htons(ETH_P_PAE); 7684 ll.sll_halen = ETH_ALEN; 7685 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 7686 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 7687 (struct sockaddr *) &ll, sizeof(ll)); 7688 if (ret < 0) 7689 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 7690 strerror(errno)); 7691 7692 return ret; 7693} 7694 7695 7696static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 7697 7698static int wpa_driver_nl80211_hapd_send_eapol( 7699 void *priv, const u8 *addr, const u8 *data, 7700 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 7701{ 7702 struct i802_bss *bss = priv; 7703 struct wpa_driver_nl80211_data *drv = bss->drv; 7704 struct ieee80211_hdr *hdr; 7705 size_t len; 7706 u8 *pos; 7707 int res; 7708 int qos = flags & WPA_STA_WMM; 7709 7710 if (drv->device_ap_sme || !drv->use_monitor) 7711 return nl80211_send_eapol_data(bss, addr, data, data_len); 7712 7713 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 7714 data_len; 7715 hdr = os_zalloc(len); 7716 if (hdr == NULL) { 7717 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)", 7718 (unsigned long) len); 7719 return -1; 7720 } 7721 7722 hdr->frame_control = 7723 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 7724 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 7725 if (encrypt) 7726 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 7727 if (qos) { 7728 hdr->frame_control |= 7729 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 7730 } 7731 7732 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 7733 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 7734 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 7735 pos = (u8 *) (hdr + 1); 7736 7737 if (qos) { 7738 /* Set highest priority in QoS header */ 7739 pos[0] = 7; 7740 pos[1] = 0; 7741 pos += 2; 7742 } 7743 7744 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 7745 pos += sizeof(rfc1042_header); 7746 WPA_PUT_BE16(pos, ETH_P_PAE); 7747 pos += 2; 7748 memcpy(pos, data, data_len); 7749 7750 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 7751 0, 0, 0, 0); 7752 if (res < 0) { 7753 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 7754 "failed: %d (%s)", 7755 (unsigned long) len, errno, strerror(errno)); 7756 } 7757 os_free(hdr); 7758 7759 return res; 7760} 7761 7762 7763static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 7764 int total_flags, 7765 int flags_or, int flags_and) 7766{ 7767 struct i802_bss *bss = priv; 7768 struct wpa_driver_nl80211_data *drv = bss->drv; 7769 struct nl_msg *msg; 7770 struct nlattr *flags; 7771 struct nl80211_sta_flag_update upd; 7772 7773 msg = nlmsg_alloc(); 7774 if (!msg) 7775 return -ENOMEM; 7776 7777 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7778 7779 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7780 if_nametoindex(bss->ifname)); 7781 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7782 7783 /* 7784 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 7785 * can be removed eventually. 7786 */ 7787 flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS); 7788 if (!flags) 7789 goto nla_put_failure; 7790 if (total_flags & WPA_STA_AUTHORIZED) 7791 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED); 7792 7793 if (total_flags & WPA_STA_WMM) 7794 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME); 7795 7796 if (total_flags & WPA_STA_SHORT_PREAMBLE) 7797 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE); 7798 7799 if (total_flags & WPA_STA_MFP) 7800 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP); 7801 7802 if (total_flags & WPA_STA_TDLS_PEER) 7803 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER); 7804 7805 nla_nest_end(msg, flags); 7806 7807 os_memset(&upd, 0, sizeof(upd)); 7808 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 7809 upd.set = sta_flags_nl80211(flags_or); 7810 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7811 7812 return send_and_recv_msgs(drv, msg, NULL, NULL); 7813 nla_put_failure: 7814 nlmsg_free(msg); 7815 return -ENOBUFS; 7816} 7817 7818 7819static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 7820 struct wpa_driver_associate_params *params) 7821{ 7822 enum nl80211_iftype nlmode, old_mode; 7823 struct hostapd_freq_params freq = { 7824 .freq = params->freq, 7825 }; 7826 7827 if (params->p2p) { 7828 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 7829 "group (GO)"); 7830 nlmode = NL80211_IFTYPE_P2P_GO; 7831 } else 7832 nlmode = NL80211_IFTYPE_AP; 7833 7834 old_mode = drv->nlmode; 7835 if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) { 7836 nl80211_remove_monitor_interface(drv); 7837 return -1; 7838 } 7839 7840 if (wpa_driver_nl80211_set_freq(drv->first_bss, &freq)) { 7841 if (old_mode != nlmode) 7842 wpa_driver_nl80211_set_mode(drv->first_bss, old_mode); 7843 nl80211_remove_monitor_interface(drv); 7844 return -1; 7845 } 7846 7847 return 0; 7848} 7849 7850 7851static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 7852{ 7853 struct nl_msg *msg; 7854 int ret = -1; 7855 7856 msg = nlmsg_alloc(); 7857 if (!msg) 7858 return -1; 7859 7860 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 7861 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7862 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7863 msg = NULL; 7864 if (ret) { 7865 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 7866 "(%s)", ret, strerror(-ret)); 7867 goto nla_put_failure; 7868 } 7869 7870 ret = 0; 7871 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 7872 7873nla_put_failure: 7874 if (wpa_driver_nl80211_set_mode(drv->first_bss, 7875 NL80211_IFTYPE_STATION)) { 7876 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 7877 "station mode"); 7878 } 7879 7880 nlmsg_free(msg); 7881 return ret; 7882} 7883 7884 7885static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 7886 struct wpa_driver_associate_params *params) 7887{ 7888 struct nl_msg *msg; 7889 int ret = -1; 7890 int count = 0; 7891 7892 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 7893 7894 if (wpa_driver_nl80211_set_mode(drv->first_bss, 7895 NL80211_IFTYPE_ADHOC)) { 7896 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 7897 "IBSS mode"); 7898 return -1; 7899 } 7900 7901retry: 7902 msg = nlmsg_alloc(); 7903 if (!msg) 7904 return -1; 7905 7906 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 7907 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7908 7909 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 7910 goto nla_put_failure; 7911 7912 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 7913 params->ssid, params->ssid_len); 7914 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 7915 params->ssid); 7916 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 7917 drv->ssid_len = params->ssid_len; 7918 7919 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7920 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7921 7922 ret = nl80211_set_conn_keys(params, msg); 7923 if (ret) 7924 goto nla_put_failure; 7925 7926 if (params->bssid && params->fixed_bssid) { 7927 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 7928 MAC2STR(params->bssid)); 7929 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7930 } 7931 7932 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 7933 params->key_mgmt_suite == KEY_MGMT_PSK || 7934 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 7935 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 7936 wpa_printf(MSG_DEBUG, " * control port"); 7937 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 7938 } 7939 7940 if (params->wpa_ie) { 7941 wpa_hexdump(MSG_DEBUG, 7942 " * Extra IEs for Beacon/Probe Response frames", 7943 params->wpa_ie, params->wpa_ie_len); 7944 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 7945 params->wpa_ie); 7946 } 7947 7948 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7949 msg = NULL; 7950 if (ret) { 7951 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 7952 ret, strerror(-ret)); 7953 count++; 7954 if (ret == -EALREADY && count == 1) { 7955 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 7956 "forced leave"); 7957 nl80211_leave_ibss(drv); 7958 nlmsg_free(msg); 7959 goto retry; 7960 } 7961 7962 goto nla_put_failure; 7963 } 7964 ret = 0; 7965 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 7966 7967nla_put_failure: 7968 nlmsg_free(msg); 7969 return ret; 7970} 7971 7972 7973static int wpa_driver_nl80211_try_connect( 7974 struct wpa_driver_nl80211_data *drv, 7975 struct wpa_driver_associate_params *params) 7976{ 7977 struct nl_msg *msg; 7978 enum nl80211_auth_type type; 7979 int ret = 0; 7980 int algs; 7981 7982 msg = nlmsg_alloc(); 7983 if (!msg) 7984 return -1; 7985 7986 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 7987 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 7988 7989 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7990 if (params->bssid) { 7991 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 7992 MAC2STR(params->bssid)); 7993 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 7994 } 7995 if (params->freq) { 7996 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 7997 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 7998 drv->assoc_freq = params->freq; 7999 } else 8000 drv->assoc_freq = 0; 8001 if (params->bg_scan_period >= 0) { 8002 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 8003 params->bg_scan_period); 8004 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 8005 params->bg_scan_period); 8006 } 8007 if (params->ssid) { 8008 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 8009 params->ssid, params->ssid_len); 8010 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 8011 params->ssid); 8012 if (params->ssid_len > sizeof(drv->ssid)) 8013 goto nla_put_failure; 8014 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 8015 drv->ssid_len = params->ssid_len; 8016 } 8017 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 8018 if (params->wpa_ie) 8019 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 8020 params->wpa_ie); 8021 8022 algs = 0; 8023 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 8024 algs++; 8025 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 8026 algs++; 8027 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 8028 algs++; 8029 if (algs > 1) { 8030 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 8031 "selection"); 8032 goto skip_auth_type; 8033 } 8034 8035 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 8036 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 8037 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 8038 type = NL80211_AUTHTYPE_SHARED_KEY; 8039 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 8040 type = NL80211_AUTHTYPE_NETWORK_EAP; 8041 else if (params->auth_alg & WPA_AUTH_ALG_FT) 8042 type = NL80211_AUTHTYPE_FT; 8043 else 8044 goto nla_put_failure; 8045 8046 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 8047 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 8048 8049skip_auth_type: 8050 if (params->wpa_proto) { 8051 enum nl80211_wpa_versions ver = 0; 8052 8053 if (params->wpa_proto & WPA_PROTO_WPA) 8054 ver |= NL80211_WPA_VERSION_1; 8055 if (params->wpa_proto & WPA_PROTO_RSN) 8056 ver |= NL80211_WPA_VERSION_2; 8057 8058 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 8059 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 8060 } 8061 8062 if (params->pairwise_suite != CIPHER_NONE) { 8063 int cipher; 8064 8065 switch (params->pairwise_suite) { 8066 case CIPHER_SMS4: 8067 cipher = WLAN_CIPHER_SUITE_SMS4; 8068 break; 8069 case CIPHER_WEP40: 8070 cipher = WLAN_CIPHER_SUITE_WEP40; 8071 break; 8072 case CIPHER_WEP104: 8073 cipher = WLAN_CIPHER_SUITE_WEP104; 8074 break; 8075 case CIPHER_CCMP: 8076 cipher = WLAN_CIPHER_SUITE_CCMP; 8077 break; 8078 case CIPHER_GCMP: 8079 cipher = WLAN_CIPHER_SUITE_GCMP; 8080 break; 8081 case CIPHER_TKIP: 8082 default: 8083 cipher = WLAN_CIPHER_SUITE_TKIP; 8084 break; 8085 } 8086 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 8087 } 8088 8089 if (params->group_suite != CIPHER_NONE) { 8090 int cipher; 8091 8092 switch (params->group_suite) { 8093 case CIPHER_SMS4: 8094 cipher = WLAN_CIPHER_SUITE_SMS4; 8095 break; 8096 case CIPHER_WEP40: 8097 cipher = WLAN_CIPHER_SUITE_WEP40; 8098 break; 8099 case CIPHER_WEP104: 8100 cipher = WLAN_CIPHER_SUITE_WEP104; 8101 break; 8102 case CIPHER_CCMP: 8103 cipher = WLAN_CIPHER_SUITE_CCMP; 8104 break; 8105 case CIPHER_GCMP: 8106 cipher = WLAN_CIPHER_SUITE_GCMP; 8107 break; 8108 case CIPHER_TKIP: 8109 default: 8110 cipher = WLAN_CIPHER_SUITE_TKIP; 8111 break; 8112 } 8113 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 8114 } 8115 8116 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 8117 params->key_mgmt_suite == KEY_MGMT_PSK || 8118 params->key_mgmt_suite == KEY_MGMT_FT_802_1X || 8119 params->key_mgmt_suite == KEY_MGMT_FT_PSK || 8120 params->key_mgmt_suite == KEY_MGMT_CCKM) { 8121 int mgmt = WLAN_AKM_SUITE_PSK; 8122 8123 switch (params->key_mgmt_suite) { 8124 case KEY_MGMT_CCKM: 8125 mgmt = WLAN_AKM_SUITE_CCKM; 8126 break; 8127 case KEY_MGMT_802_1X: 8128 mgmt = WLAN_AKM_SUITE_8021X; 8129 break; 8130 case KEY_MGMT_FT_802_1X: 8131 mgmt = WLAN_AKM_SUITE_FT_8021X; 8132 break; 8133 case KEY_MGMT_FT_PSK: 8134 mgmt = WLAN_AKM_SUITE_FT_PSK; 8135 break; 8136 case KEY_MGMT_PSK: 8137 default: 8138 mgmt = WLAN_AKM_SUITE_PSK; 8139 break; 8140 } 8141 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 8142 } 8143 8144#ifdef CONFIG_IEEE80211W 8145 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 8146 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 8147#endif /* CONFIG_IEEE80211W */ 8148 8149 if (params->disable_ht) 8150 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 8151 8152 if (params->htcaps && params->htcaps_mask) { 8153 int sz = sizeof(struct ieee80211_ht_capabilities); 8154 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 8155 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 8156 params->htcaps_mask); 8157 } 8158 8159#ifdef CONFIG_VHT_OVERRIDES 8160 if (params->disable_vht) { 8161 wpa_printf(MSG_DEBUG, " * VHT disabled"); 8162 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 8163 } 8164 8165 if (params->vhtcaps && params->vhtcaps_mask) { 8166 int sz = sizeof(struct ieee80211_vht_capabilities); 8167 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 8168 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 8169 params->vhtcaps_mask); 8170 } 8171#endif /* CONFIG_VHT_OVERRIDES */ 8172 8173 ret = nl80211_set_conn_keys(params, msg); 8174 if (ret) 8175 goto nla_put_failure; 8176 8177 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8178 msg = NULL; 8179 if (ret) { 8180 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 8181 "(%s)", ret, strerror(-ret)); 8182 goto nla_put_failure; 8183 } 8184 ret = 0; 8185 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 8186 8187nla_put_failure: 8188 nlmsg_free(msg); 8189 return ret; 8190 8191} 8192 8193 8194static int wpa_driver_nl80211_connect( 8195 struct wpa_driver_nl80211_data *drv, 8196 struct wpa_driver_associate_params *params) 8197{ 8198 int ret = wpa_driver_nl80211_try_connect(drv, params); 8199 if (ret == -EALREADY) { 8200 /* 8201 * cfg80211 does not currently accept new connections if 8202 * we are already connected. As a workaround, force 8203 * disconnection and try again. 8204 */ 8205 wpa_printf(MSG_DEBUG, "nl80211: Explicitly " 8206 "disconnecting before reassociation " 8207 "attempt"); 8208 if (wpa_driver_nl80211_disconnect( 8209 drv, WLAN_REASON_PREV_AUTH_NOT_VALID)) 8210 return -1; 8211 ret = wpa_driver_nl80211_try_connect(drv, params); 8212 } 8213 return ret; 8214} 8215 8216 8217static int wpa_driver_nl80211_associate( 8218 void *priv, struct wpa_driver_associate_params *params) 8219{ 8220 struct i802_bss *bss = priv; 8221 struct wpa_driver_nl80211_data *drv = bss->drv; 8222 int ret = -1; 8223 struct nl_msg *msg; 8224 8225 if (params->mode == IEEE80211_MODE_AP) 8226 return wpa_driver_nl80211_ap(drv, params); 8227 8228 if (params->mode == IEEE80211_MODE_IBSS) 8229 return wpa_driver_nl80211_ibss(drv, params); 8230 8231 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 8232 enum nl80211_iftype nlmode = params->p2p ? 8233 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 8234 8235 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 8236 return -1; 8237 return wpa_driver_nl80211_connect(drv, params); 8238 } 8239 8240 nl80211_mark_disconnected(drv); 8241 8242 msg = nlmsg_alloc(); 8243 if (!msg) 8244 return -1; 8245 8246 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 8247 drv->ifindex); 8248 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 8249 8250 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8251 if (params->bssid) { 8252 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 8253 MAC2STR(params->bssid)); 8254 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 8255 } 8256 if (params->freq) { 8257 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 8258 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 8259 drv->assoc_freq = params->freq; 8260 } else 8261 drv->assoc_freq = 0; 8262 if (params->bg_scan_period >= 0) { 8263 wpa_printf(MSG_DEBUG, " * bg scan period=%d", 8264 params->bg_scan_period); 8265 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD, 8266 params->bg_scan_period); 8267 } 8268 if (params->ssid) { 8269 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 8270 params->ssid, params->ssid_len); 8271 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 8272 params->ssid); 8273 if (params->ssid_len > sizeof(drv->ssid)) 8274 goto nla_put_failure; 8275 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 8276 drv->ssid_len = params->ssid_len; 8277 } 8278 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 8279 if (params->wpa_ie) 8280 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 8281 params->wpa_ie); 8282 8283 if (params->pairwise_suite != CIPHER_NONE) { 8284 int cipher; 8285 8286 switch (params->pairwise_suite) { 8287 case CIPHER_WEP40: 8288 cipher = WLAN_CIPHER_SUITE_WEP40; 8289 break; 8290 case CIPHER_WEP104: 8291 cipher = WLAN_CIPHER_SUITE_WEP104; 8292 break; 8293 case CIPHER_CCMP: 8294 cipher = WLAN_CIPHER_SUITE_CCMP; 8295 break; 8296 case CIPHER_GCMP: 8297 cipher = WLAN_CIPHER_SUITE_GCMP; 8298 break; 8299 case CIPHER_TKIP: 8300 default: 8301 cipher = WLAN_CIPHER_SUITE_TKIP; 8302 break; 8303 } 8304 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 8305 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 8306 } 8307 8308 if (params->group_suite != CIPHER_NONE) { 8309 int cipher; 8310 8311 switch (params->group_suite) { 8312 case CIPHER_WEP40: 8313 cipher = WLAN_CIPHER_SUITE_WEP40; 8314 break; 8315 case CIPHER_WEP104: 8316 cipher = WLAN_CIPHER_SUITE_WEP104; 8317 break; 8318 case CIPHER_CCMP: 8319 cipher = WLAN_CIPHER_SUITE_CCMP; 8320 break; 8321 case CIPHER_GCMP: 8322 cipher = WLAN_CIPHER_SUITE_GCMP; 8323 break; 8324 case CIPHER_TKIP: 8325 default: 8326 cipher = WLAN_CIPHER_SUITE_TKIP; 8327 break; 8328 } 8329 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 8330 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 8331 } 8332 8333#ifdef CONFIG_IEEE80211W 8334 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 8335 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 8336#endif /* CONFIG_IEEE80211W */ 8337 8338 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 8339 8340 if (params->prev_bssid) { 8341 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 8342 MAC2STR(params->prev_bssid)); 8343 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 8344 params->prev_bssid); 8345 } 8346 8347 if (params->disable_ht) 8348 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 8349 8350 if (params->htcaps && params->htcaps_mask) { 8351 int sz = sizeof(struct ieee80211_ht_capabilities); 8352 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 8353 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 8354 params->htcaps_mask); 8355 } 8356 8357#ifdef CONFIG_VHT_OVERRIDES 8358 if (params->disable_vht) { 8359 wpa_printf(MSG_DEBUG, " * VHT disabled"); 8360 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT); 8361 } 8362 8363 if (params->vhtcaps && params->vhtcaps_mask) { 8364 int sz = sizeof(struct ieee80211_vht_capabilities); 8365 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps); 8366 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz, 8367 params->vhtcaps_mask); 8368 } 8369#endif /* CONFIG_VHT_OVERRIDES */ 8370 8371 if (params->p2p) 8372 wpa_printf(MSG_DEBUG, " * P2P group"); 8373 8374 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8375 msg = NULL; 8376 if (ret) { 8377 wpa_dbg(drv->ctx, MSG_DEBUG, 8378 "nl80211: MLME command failed (assoc): ret=%d (%s)", 8379 ret, strerror(-ret)); 8380 nl80211_dump_scan(drv); 8381 goto nla_put_failure; 8382 } 8383 ret = 0; 8384 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 8385 "successfully"); 8386 8387nla_put_failure: 8388 nlmsg_free(msg); 8389 return ret; 8390} 8391 8392 8393static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 8394 int ifindex, enum nl80211_iftype mode) 8395{ 8396 struct nl_msg *msg; 8397 int ret = -ENOBUFS; 8398 8399 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 8400 ifindex, mode, nl80211_iftype_str(mode)); 8401 8402 msg = nlmsg_alloc(); 8403 if (!msg) 8404 return -ENOMEM; 8405 8406 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 8407 if (nl80211_set_iface_id(msg, drv->first_bss) < 0) 8408 goto nla_put_failure; 8409 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 8410 8411 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8412 msg = NULL; 8413 if (!ret) 8414 return 0; 8415nla_put_failure: 8416 nlmsg_free(msg); 8417 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 8418 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 8419 return ret; 8420} 8421 8422 8423static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 8424 enum nl80211_iftype nlmode) 8425{ 8426 struct wpa_driver_nl80211_data *drv = bss->drv; 8427 int ret = -1; 8428 int i; 8429 int was_ap = is_ap_interface(drv->nlmode); 8430 int res; 8431 8432 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 8433 if (res && nlmode == nl80211_get_ifmode(bss)) 8434 res = 0; 8435 8436 if (res == 0) { 8437 drv->nlmode = nlmode; 8438 ret = 0; 8439 goto done; 8440 } 8441 8442 if (res == -ENODEV) 8443 return -1; 8444 8445 if (nlmode == drv->nlmode) { 8446 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 8447 "requested mode - ignore error"); 8448 ret = 0; 8449 goto done; /* Already in the requested mode */ 8450 } 8451 8452 /* mac80211 doesn't allow mode changes while the device is up, so 8453 * take the device down, try to set the mode again, and bring the 8454 * device back up. 8455 */ 8456 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 8457 "interface down"); 8458 for (i = 0; i < 10; i++) { 8459 res = i802_set_iface_flags(bss, 0); 8460 if (res == -EACCES || res == -ENODEV) 8461 break; 8462 if (res == 0) { 8463 /* Try to set the mode again while the interface is 8464 * down */ 8465 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 8466 if (ret == -EACCES) 8467 break; 8468 res = i802_set_iface_flags(bss, 1); 8469 if (res && !ret) 8470 ret = -1; 8471 else if (ret != -EBUSY) 8472 break; 8473 } else 8474 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 8475 "interface down"); 8476 os_sleep(0, 100000); 8477 } 8478 8479 if (!ret) { 8480 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 8481 "interface is down"); 8482 drv->nlmode = nlmode; 8483 drv->ignore_if_down_event = 1; 8484 } 8485 8486done: 8487 if (ret) { 8488 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 8489 "from %d failed", nlmode, drv->nlmode); 8490 return ret; 8491 } 8492 8493 if (is_p2p_net_interface(nlmode)) 8494 nl80211_disable_11b_rates(drv, drv->ifindex, 1); 8495 else if (drv->disabled_11b_rates) 8496 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 8497 8498 if (is_ap_interface(nlmode)) { 8499 nl80211_mgmt_unsubscribe(bss, "start AP"); 8500 /* Setup additional AP mode functionality if needed */ 8501 if (nl80211_setup_ap(bss)) 8502 return -1; 8503 } else if (was_ap) { 8504 /* Remove additional AP mode functionality */ 8505 nl80211_teardown_ap(bss); 8506 } else { 8507 nl80211_mgmt_unsubscribe(bss, "mode change"); 8508 } 8509 8510 if (!bss->in_deinit && !is_ap_interface(nlmode) && 8511 nl80211_mgmt_subscribe_non_ap(bss) < 0) 8512 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 8513 "frame processing - ignore for now"); 8514 8515 return 0; 8516} 8517 8518 8519static int wpa_driver_nl80211_get_capa(void *priv, 8520 struct wpa_driver_capa *capa) 8521{ 8522 struct i802_bss *bss = priv; 8523 struct wpa_driver_nl80211_data *drv = bss->drv; 8524 if (!drv->has_capability) 8525 return -1; 8526 os_memcpy(capa, &drv->capa, sizeof(*capa)); 8527 if (drv->extended_capa && drv->extended_capa_mask) { 8528 capa->extended_capa = drv->extended_capa; 8529 capa->extended_capa_mask = drv->extended_capa_mask; 8530 capa->extended_capa_len = drv->extended_capa_len; 8531 } 8532 8533 if ((capa->flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) && 8534 !drv->allow_p2p_device) { 8535 wpa_printf(MSG_DEBUG, "nl80211: Do not indicate P2P_DEVICE support (p2p_device=1 driver param not specified)"); 8536 capa->flags &= ~WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE; 8537 } 8538 8539 return 0; 8540} 8541 8542 8543static int wpa_driver_nl80211_set_operstate(void *priv, int state) 8544{ 8545 struct i802_bss *bss = priv; 8546 struct wpa_driver_nl80211_data *drv = bss->drv; 8547 8548 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 8549 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 8550 drv->operstate = state; 8551 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 8552 state ? IF_OPER_UP : IF_OPER_DORMANT); 8553} 8554 8555 8556static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 8557{ 8558 struct i802_bss *bss = priv; 8559 struct wpa_driver_nl80211_data *drv = bss->drv; 8560 struct nl_msg *msg; 8561 struct nl80211_sta_flag_update upd; 8562 8563 wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for " 8564 MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid)); 8565 8566 msg = nlmsg_alloc(); 8567 if (!msg) 8568 return -ENOMEM; 8569 8570 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 8571 8572 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 8573 if_nametoindex(bss->ifname)); 8574 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 8575 8576 os_memset(&upd, 0, sizeof(upd)); 8577 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 8578 if (authorized) 8579 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 8580 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 8581 8582 return send_and_recv_msgs(drv, msg, NULL, NULL); 8583 nla_put_failure: 8584 nlmsg_free(msg); 8585 return -ENOBUFS; 8586} 8587 8588 8589/* Set kernel driver on given frequency (MHz) */ 8590static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 8591{ 8592 struct i802_bss *bss = priv; 8593 return wpa_driver_nl80211_set_freq(bss, freq); 8594} 8595 8596 8597static inline int min_int(int a, int b) 8598{ 8599 if (a < b) 8600 return a; 8601 return b; 8602} 8603 8604 8605static int get_key_handler(struct nl_msg *msg, void *arg) 8606{ 8607 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8608 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8609 8610 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8611 genlmsg_attrlen(gnlh, 0), NULL); 8612 8613 /* 8614 * TODO: validate the key index and mac address! 8615 * Otherwise, there's a race condition as soon as 8616 * the kernel starts sending key notifications. 8617 */ 8618 8619 if (tb[NL80211_ATTR_KEY_SEQ]) 8620 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 8621 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 8622 return NL_SKIP; 8623} 8624 8625 8626static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 8627 int idx, u8 *seq) 8628{ 8629 struct i802_bss *bss = priv; 8630 struct wpa_driver_nl80211_data *drv = bss->drv; 8631 struct nl_msg *msg; 8632 8633 msg = nlmsg_alloc(); 8634 if (!msg) 8635 return -ENOMEM; 8636 8637 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 8638 8639 if (addr) 8640 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8641 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 8642 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 8643 8644 memset(seq, 0, 6); 8645 8646 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 8647 nla_put_failure: 8648 nlmsg_free(msg); 8649 return -ENOBUFS; 8650} 8651 8652 8653static int i802_set_rts(void *priv, int rts) 8654{ 8655 struct i802_bss *bss = priv; 8656 struct wpa_driver_nl80211_data *drv = bss->drv; 8657 struct nl_msg *msg; 8658 int ret = -ENOBUFS; 8659 u32 val; 8660 8661 msg = nlmsg_alloc(); 8662 if (!msg) 8663 return -ENOMEM; 8664 8665 if (rts >= 2347) 8666 val = (u32) -1; 8667 else 8668 val = rts; 8669 8670 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 8671 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8672 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 8673 8674 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8675 msg = NULL; 8676 if (!ret) 8677 return 0; 8678nla_put_failure: 8679 nlmsg_free(msg); 8680 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 8681 "%d (%s)", rts, ret, strerror(-ret)); 8682 return ret; 8683} 8684 8685 8686static int i802_set_frag(void *priv, int frag) 8687{ 8688 struct i802_bss *bss = priv; 8689 struct wpa_driver_nl80211_data *drv = bss->drv; 8690 struct nl_msg *msg; 8691 int ret = -ENOBUFS; 8692 u32 val; 8693 8694 msg = nlmsg_alloc(); 8695 if (!msg) 8696 return -ENOMEM; 8697 8698 if (frag >= 2346) 8699 val = (u32) -1; 8700 else 8701 val = frag; 8702 8703 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 8704 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8705 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 8706 8707 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8708 msg = NULL; 8709 if (!ret) 8710 return 0; 8711nla_put_failure: 8712 nlmsg_free(msg); 8713 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 8714 "%d: %d (%s)", frag, ret, strerror(-ret)); 8715 return ret; 8716} 8717 8718 8719static int i802_flush(void *priv) 8720{ 8721 struct i802_bss *bss = priv; 8722 struct wpa_driver_nl80211_data *drv = bss->drv; 8723 struct nl_msg *msg; 8724 int res; 8725 8726 msg = nlmsg_alloc(); 8727 if (!msg) 8728 return -1; 8729 8730 wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)", 8731 bss->ifname); 8732 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 8733 8734 /* 8735 * XXX: FIX! this needs to flush all VLANs too 8736 */ 8737 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 8738 if_nametoindex(bss->ifname)); 8739 8740 res = send_and_recv_msgs(drv, msg, NULL, NULL); 8741 if (res) { 8742 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 8743 "(%s)", res, strerror(-res)); 8744 } 8745 return res; 8746 nla_put_failure: 8747 nlmsg_free(msg); 8748 return -ENOBUFS; 8749} 8750 8751 8752static int get_sta_handler(struct nl_msg *msg, void *arg) 8753{ 8754 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 8755 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 8756 struct hostap_sta_driver_data *data = arg; 8757 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 8758 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 8759 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 8760 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 8761 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 8762 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 8763 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 8764 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 8765 }; 8766 8767 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 8768 genlmsg_attrlen(gnlh, 0), NULL); 8769 8770 /* 8771 * TODO: validate the interface and mac address! 8772 * Otherwise, there's a race condition as soon as 8773 * the kernel starts sending station notifications. 8774 */ 8775 8776 if (!tb[NL80211_ATTR_STA_INFO]) { 8777 wpa_printf(MSG_DEBUG, "sta stats missing!"); 8778 return NL_SKIP; 8779 } 8780 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 8781 tb[NL80211_ATTR_STA_INFO], 8782 stats_policy)) { 8783 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 8784 return NL_SKIP; 8785 } 8786 8787 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 8788 data->inactive_msec = 8789 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 8790 if (stats[NL80211_STA_INFO_RX_BYTES]) 8791 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 8792 if (stats[NL80211_STA_INFO_TX_BYTES]) 8793 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 8794 if (stats[NL80211_STA_INFO_RX_PACKETS]) 8795 data->rx_packets = 8796 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 8797 if (stats[NL80211_STA_INFO_TX_PACKETS]) 8798 data->tx_packets = 8799 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 8800 if (stats[NL80211_STA_INFO_TX_FAILED]) 8801 data->tx_retry_failed = 8802 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]); 8803 8804 return NL_SKIP; 8805} 8806 8807static int i802_read_sta_data(struct i802_bss *bss, 8808 struct hostap_sta_driver_data *data, 8809 const u8 *addr) 8810{ 8811 struct wpa_driver_nl80211_data *drv = bss->drv; 8812 struct nl_msg *msg; 8813 8814 os_memset(data, 0, sizeof(*data)); 8815 msg = nlmsg_alloc(); 8816 if (!msg) 8817 return -ENOMEM; 8818 8819 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 8820 8821 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8822 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 8823 8824 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 8825 nla_put_failure: 8826 nlmsg_free(msg); 8827 return -ENOBUFS; 8828} 8829 8830 8831static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 8832 int cw_min, int cw_max, int burst_time) 8833{ 8834 struct i802_bss *bss = priv; 8835 struct wpa_driver_nl80211_data *drv = bss->drv; 8836 struct nl_msg *msg; 8837 struct nlattr *txq, *params; 8838 8839 msg = nlmsg_alloc(); 8840 if (!msg) 8841 return -1; 8842 8843 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 8844 8845 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 8846 8847 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 8848 if (!txq) 8849 goto nla_put_failure; 8850 8851 /* We are only sending parameters for a single TXQ at a time */ 8852 params = nla_nest_start(msg, 1); 8853 if (!params) 8854 goto nla_put_failure; 8855 8856 switch (queue) { 8857 case 0: 8858 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 8859 break; 8860 case 1: 8861 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 8862 break; 8863 case 2: 8864 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 8865 break; 8866 case 3: 8867 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 8868 break; 8869 } 8870 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 8871 * 32 usec, so need to convert the value here. */ 8872 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 8873 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 8874 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 8875 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 8876 8877 nla_nest_end(msg, params); 8878 8879 nla_nest_end(msg, txq); 8880 8881 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 8882 return 0; 8883 msg = NULL; 8884 nla_put_failure: 8885 nlmsg_free(msg); 8886 return -1; 8887} 8888 8889 8890static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr, 8891 const char *ifname, int vlan_id) 8892{ 8893 struct wpa_driver_nl80211_data *drv = bss->drv; 8894 struct nl_msg *msg; 8895 int ret = -ENOBUFS; 8896 8897 msg = nlmsg_alloc(); 8898 if (!msg) 8899 return -ENOMEM; 8900 8901 wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR 8902 ", ifname=%s[%d], vlan_id=%d)", 8903 bss->ifname, if_nametoindex(bss->ifname), 8904 MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id); 8905 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 8906 8907 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 8908 if_nametoindex(bss->ifname)); 8909 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8910 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 8911 if_nametoindex(ifname)); 8912 8913 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8914 msg = NULL; 8915 if (ret < 0) { 8916 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 8917 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 8918 MAC2STR(addr), ifname, vlan_id, ret, 8919 strerror(-ret)); 8920 } 8921 nla_put_failure: 8922 nlmsg_free(msg); 8923 return ret; 8924} 8925 8926 8927static int i802_get_inact_sec(void *priv, const u8 *addr) 8928{ 8929 struct hostap_sta_driver_data data; 8930 int ret; 8931 8932 data.inactive_msec = (unsigned long) -1; 8933 ret = i802_read_sta_data(priv, &data, addr); 8934 if (ret || data.inactive_msec == (unsigned long) -1) 8935 return -1; 8936 return data.inactive_msec / 1000; 8937} 8938 8939 8940static int i802_sta_clear_stats(void *priv, const u8 *addr) 8941{ 8942#if 0 8943 /* TODO */ 8944#endif 8945 return 0; 8946} 8947 8948 8949static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 8950 int reason) 8951{ 8952 struct i802_bss *bss = priv; 8953 struct wpa_driver_nl80211_data *drv = bss->drv; 8954 struct ieee80211_mgmt mgmt; 8955 8956 if (drv->device_ap_sme) 8957 return wpa_driver_nl80211_sta_remove(bss, addr); 8958 8959 memset(&mgmt, 0, sizeof(mgmt)); 8960 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8961 WLAN_FC_STYPE_DEAUTH); 8962 memcpy(mgmt.da, addr, ETH_ALEN); 8963 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8964 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8965 mgmt.u.deauth.reason_code = host_to_le16(reason); 8966 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8967 IEEE80211_HDRLEN + 8968 sizeof(mgmt.u.deauth), 0, 0, 0, 0, 8969 0); 8970} 8971 8972 8973static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 8974 int reason) 8975{ 8976 struct i802_bss *bss = priv; 8977 struct wpa_driver_nl80211_data *drv = bss->drv; 8978 struct ieee80211_mgmt mgmt; 8979 8980 if (drv->device_ap_sme) 8981 return wpa_driver_nl80211_sta_remove(bss, addr); 8982 8983 memset(&mgmt, 0, sizeof(mgmt)); 8984 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 8985 WLAN_FC_STYPE_DISASSOC); 8986 memcpy(mgmt.da, addr, ETH_ALEN); 8987 memcpy(mgmt.sa, own_addr, ETH_ALEN); 8988 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 8989 mgmt.u.disassoc.reason_code = host_to_le16(reason); 8990 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 8991 IEEE80211_HDRLEN + 8992 sizeof(mgmt.u.disassoc), 0, 0, 0, 0, 8993 0); 8994} 8995 8996 8997static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 8998{ 8999 int i; 9000 int *old; 9001 9002 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 9003 ifidx); 9004 for (i = 0; i < drv->num_if_indices; i++) { 9005 if (drv->if_indices[i] == 0) { 9006 drv->if_indices[i] = ifidx; 9007 return; 9008 } 9009 } 9010 9011 if (drv->if_indices != drv->default_if_indices) 9012 old = drv->if_indices; 9013 else 9014 old = NULL; 9015 9016 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1, 9017 sizeof(int)); 9018 if (!drv->if_indices) { 9019 if (!old) 9020 drv->if_indices = drv->default_if_indices; 9021 else 9022 drv->if_indices = old; 9023 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 9024 "interfaces"); 9025 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 9026 return; 9027 } else if (!old) 9028 os_memcpy(drv->if_indices, drv->default_if_indices, 9029 sizeof(drv->default_if_indices)); 9030 drv->if_indices[drv->num_if_indices] = ifidx; 9031 drv->num_if_indices++; 9032} 9033 9034 9035static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 9036{ 9037 int i; 9038 9039 for (i = 0; i < drv->num_if_indices; i++) { 9040 if (drv->if_indices[i] == ifidx) { 9041 drv->if_indices[i] = 0; 9042 break; 9043 } 9044 } 9045} 9046 9047 9048static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 9049{ 9050 int i; 9051 9052 for (i = 0; i < drv->num_if_indices; i++) 9053 if (drv->if_indices[i] == ifidx) 9054 return 1; 9055 9056 return 0; 9057} 9058 9059 9060static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 9061 const char *bridge_ifname, char *ifname_wds) 9062{ 9063 struct i802_bss *bss = priv; 9064 struct wpa_driver_nl80211_data *drv = bss->drv; 9065 char name[IFNAMSIZ + 1]; 9066 9067 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 9068 if (ifname_wds) 9069 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1); 9070 9071 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 9072 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 9073 if (val) { 9074 if (!if_nametoindex(name)) { 9075 if (nl80211_create_iface(drv, name, 9076 NL80211_IFTYPE_AP_VLAN, 9077 bss->addr, 1, NULL, NULL, 0) < 9078 0) 9079 return -1; 9080 if (bridge_ifname && 9081 linux_br_add_if(drv->global->ioctl_sock, 9082 bridge_ifname, name) < 0) 9083 return -1; 9084 } 9085 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) { 9086 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA " 9087 "interface %s up", name); 9088 } 9089 return i802_set_sta_vlan(priv, addr, name, 0); 9090 } else { 9091 if (bridge_ifname) 9092 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname, 9093 name); 9094 9095 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 9096 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 9097 name); 9098 } 9099} 9100 9101 9102static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 9103{ 9104 struct wpa_driver_nl80211_data *drv = eloop_ctx; 9105 struct sockaddr_ll lladdr; 9106 unsigned char buf[3000]; 9107 int len; 9108 socklen_t fromlen = sizeof(lladdr); 9109 9110 len = recvfrom(sock, buf, sizeof(buf), 0, 9111 (struct sockaddr *)&lladdr, &fromlen); 9112 if (len < 0) { 9113 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s", 9114 strerror(errno)); 9115 return; 9116 } 9117 9118 if (have_ifidx(drv, lladdr.sll_ifindex)) 9119 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 9120} 9121 9122 9123static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 9124 struct i802_bss *bss, 9125 const char *brname, const char *ifname) 9126{ 9127 int ifindex; 9128 char in_br[IFNAMSIZ]; 9129 9130 os_strlcpy(bss->brname, brname, IFNAMSIZ); 9131 ifindex = if_nametoindex(brname); 9132 if (ifindex == 0) { 9133 /* 9134 * Bridge was configured, but the bridge device does 9135 * not exist. Try to add it now. 9136 */ 9137 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 9138 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 9139 "bridge interface %s: %s", 9140 brname, strerror(errno)); 9141 return -1; 9142 } 9143 bss->added_bridge = 1; 9144 add_ifidx(drv, if_nametoindex(brname)); 9145 } 9146 9147 if (linux_br_get(in_br, ifname) == 0) { 9148 if (os_strcmp(in_br, brname) == 0) 9149 return 0; /* already in the bridge */ 9150 9151 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 9152 "bridge %s", ifname, in_br); 9153 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 9154 0) { 9155 wpa_printf(MSG_ERROR, "nl80211: Failed to " 9156 "remove interface %s from bridge " 9157 "%s: %s", 9158 ifname, brname, strerror(errno)); 9159 return -1; 9160 } 9161 } 9162 9163 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 9164 ifname, brname); 9165 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 9166 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 9167 "into bridge %s: %s", 9168 ifname, brname, strerror(errno)); 9169 return -1; 9170 } 9171 bss->added_if_into_bridge = 1; 9172 9173 return 0; 9174} 9175 9176 9177static void *i802_init(struct hostapd_data *hapd, 9178 struct wpa_init_params *params) 9179{ 9180 struct wpa_driver_nl80211_data *drv; 9181 struct i802_bss *bss; 9182 size_t i; 9183 char brname[IFNAMSIZ]; 9184 int ifindex, br_ifindex; 9185 int br_added = 0; 9186 9187 bss = wpa_driver_nl80211_drv_init(hapd, params->ifname, 9188 params->global_priv, 1, 9189 params->bssid); 9190 if (bss == NULL) 9191 return NULL; 9192 9193 drv = bss->drv; 9194 9195 if (linux_br_get(brname, params->ifname) == 0) { 9196 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 9197 params->ifname, brname); 9198 br_ifindex = if_nametoindex(brname); 9199 } else { 9200 brname[0] = '\0'; 9201 br_ifindex = 0; 9202 } 9203 9204 for (i = 0; i < params->num_bridge; i++) { 9205 if (params->bridge[i]) { 9206 ifindex = if_nametoindex(params->bridge[i]); 9207 if (ifindex) 9208 add_ifidx(drv, ifindex); 9209 if (ifindex == br_ifindex) 9210 br_added = 1; 9211 } 9212 } 9213 if (!br_added && br_ifindex && 9214 (params->num_bridge == 0 || !params->bridge[0])) 9215 add_ifidx(drv, br_ifindex); 9216 9217 /* start listening for EAPOL on the default AP interface */ 9218 add_ifidx(drv, drv->ifindex); 9219 9220 if (params->num_bridge && params->bridge[0] && 9221 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 9222 goto failed; 9223 9224 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 9225 if (drv->eapol_sock < 0) { 9226 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s", 9227 strerror(errno)); 9228 goto failed; 9229 } 9230 9231 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 9232 { 9233 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol"); 9234 goto failed; 9235 } 9236 9237 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 9238 params->own_addr)) 9239 goto failed; 9240 9241 memcpy(bss->addr, params->own_addr, ETH_ALEN); 9242 9243 return bss; 9244 9245failed: 9246 wpa_driver_nl80211_deinit(bss); 9247 return NULL; 9248} 9249 9250 9251static void i802_deinit(void *priv) 9252{ 9253 struct i802_bss *bss = priv; 9254 wpa_driver_nl80211_deinit(bss); 9255} 9256 9257 9258static enum nl80211_iftype wpa_driver_nl80211_if_type( 9259 enum wpa_driver_if_type type) 9260{ 9261 switch (type) { 9262 case WPA_IF_STATION: 9263 return NL80211_IFTYPE_STATION; 9264 case WPA_IF_P2P_CLIENT: 9265 case WPA_IF_P2P_GROUP: 9266 return NL80211_IFTYPE_P2P_CLIENT; 9267 case WPA_IF_AP_VLAN: 9268 return NL80211_IFTYPE_AP_VLAN; 9269 case WPA_IF_AP_BSS: 9270 return NL80211_IFTYPE_AP; 9271 case WPA_IF_P2P_GO: 9272 return NL80211_IFTYPE_P2P_GO; 9273 case WPA_IF_P2P_DEVICE: 9274 return NL80211_IFTYPE_P2P_DEVICE; 9275 } 9276 return -1; 9277} 9278 9279 9280#ifdef CONFIG_P2P 9281 9282static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 9283{ 9284 struct wpa_driver_nl80211_data *drv; 9285 dl_list_for_each(drv, &global->interfaces, 9286 struct wpa_driver_nl80211_data, list) { 9287 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0) 9288 return 1; 9289 } 9290 return 0; 9291} 9292 9293 9294static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 9295 u8 *new_addr) 9296{ 9297 unsigned int idx; 9298 9299 if (!drv->global) 9300 return -1; 9301 9302 os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN); 9303 for (idx = 0; idx < 64; idx++) { 9304 new_addr[0] = drv->first_bss->addr[0] | 0x02; 9305 new_addr[0] ^= idx << 2; 9306 if (!nl80211_addr_in_use(drv->global, new_addr)) 9307 break; 9308 } 9309 if (idx == 64) 9310 return -1; 9311 9312 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 9313 MACSTR, MAC2STR(new_addr)); 9314 9315 return 0; 9316} 9317 9318#endif /* CONFIG_P2P */ 9319 9320 9321struct wdev_info { 9322 u64 wdev_id; 9323 int wdev_id_set; 9324 u8 macaddr[ETH_ALEN]; 9325}; 9326 9327static int nl80211_wdev_handler(struct nl_msg *msg, void *arg) 9328{ 9329 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 9330 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 9331 struct wdev_info *wi = arg; 9332 9333 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 9334 genlmsg_attrlen(gnlh, 0), NULL); 9335 if (tb[NL80211_ATTR_WDEV]) { 9336 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]); 9337 wi->wdev_id_set = 1; 9338 } 9339 9340 if (tb[NL80211_ATTR_MAC]) 9341 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]), 9342 ETH_ALEN); 9343 9344 return NL_SKIP; 9345} 9346 9347 9348static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 9349 const char *ifname, const u8 *addr, 9350 void *bss_ctx, void **drv_priv, 9351 char *force_ifname, u8 *if_addr, 9352 const char *bridge, int use_existing) 9353{ 9354 enum nl80211_iftype nlmode; 9355 struct i802_bss *bss = priv; 9356 struct wpa_driver_nl80211_data *drv = bss->drv; 9357 int ifidx; 9358 int added = 1; 9359 9360 if (addr) 9361 os_memcpy(if_addr, addr, ETH_ALEN); 9362 nlmode = wpa_driver_nl80211_if_type(type); 9363 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) { 9364 struct wdev_info p2pdev_info; 9365 9366 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info)); 9367 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr, 9368 0, nl80211_wdev_handler, 9369 &p2pdev_info, use_existing); 9370 if (!p2pdev_info.wdev_id_set || ifidx != 0) { 9371 wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s", 9372 ifname); 9373 return -1; 9374 } 9375 9376 drv->global->if_add_wdevid = p2pdev_info.wdev_id; 9377 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set; 9378 if (!is_zero_ether_addr(p2pdev_info.macaddr)) 9379 os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN); 9380 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created", 9381 ifname, 9382 (long long unsigned int) p2pdev_info.wdev_id); 9383 } else { 9384 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr, 9385 0, NULL, NULL, use_existing); 9386 if (use_existing && ifidx == -ENFILE) { 9387 added = 0; 9388 ifidx = if_nametoindex(ifname); 9389 } else if (ifidx < 0) { 9390 return -1; 9391 } 9392 } 9393 9394 if (!addr) { 9395 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) 9396 os_memcpy(if_addr, bss->addr, ETH_ALEN); 9397 else if (linux_get_ifhwaddr(drv->global->ioctl_sock, 9398 bss->ifname, if_addr) < 0) { 9399 if (added) 9400 nl80211_remove_iface(drv, ifidx); 9401 return -1; 9402 } 9403 } 9404 9405#ifdef CONFIG_P2P 9406 if (!addr && 9407 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 9408 type == WPA_IF_P2P_GO)) { 9409 /* Enforce unique P2P Interface Address */ 9410 u8 new_addr[ETH_ALEN]; 9411 9412 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 9413 new_addr) < 0) { 9414 nl80211_remove_iface(drv, ifidx); 9415 return -1; 9416 } 9417 if (nl80211_addr_in_use(drv->global, new_addr)) { 9418 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 9419 "for P2P group interface"); 9420 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 9421 nl80211_remove_iface(drv, ifidx); 9422 return -1; 9423 } 9424 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 9425 new_addr) < 0) { 9426 nl80211_remove_iface(drv, ifidx); 9427 return -1; 9428 } 9429 } 9430 os_memcpy(if_addr, new_addr, ETH_ALEN); 9431 } 9432#endif /* CONFIG_P2P */ 9433 9434 if (type == WPA_IF_AP_BSS) { 9435 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss)); 9436 if (new_bss == NULL) { 9437 if (added) 9438 nl80211_remove_iface(drv, ifidx); 9439 return -1; 9440 } 9441 9442 if (bridge && 9443 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 9444 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 9445 "interface %s to a bridge %s", 9446 ifname, bridge); 9447 if (added) 9448 nl80211_remove_iface(drv, ifidx); 9449 os_free(new_bss); 9450 return -1; 9451 } 9452 9453 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 9454 { 9455 nl80211_remove_iface(drv, ifidx); 9456 os_free(new_bss); 9457 return -1; 9458 } 9459 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 9460 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 9461 new_bss->ifindex = ifidx; 9462 new_bss->drv = drv; 9463 new_bss->next = drv->first_bss->next; 9464 new_bss->freq = drv->first_bss->freq; 9465 new_bss->ctx = bss_ctx; 9466 new_bss->added_if = added; 9467 drv->first_bss->next = new_bss; 9468 if (drv_priv) 9469 *drv_priv = new_bss; 9470 nl80211_init_bss(new_bss); 9471 9472 /* Subscribe management frames for this WPA_IF_AP_BSS */ 9473 if (nl80211_setup_ap(new_bss)) 9474 return -1; 9475 } 9476 9477 if (drv->global) 9478 drv->global->if_add_ifindex = ifidx; 9479 9480 return 0; 9481} 9482 9483 9484static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 9485 enum wpa_driver_if_type type, 9486 const char *ifname) 9487{ 9488 struct wpa_driver_nl80211_data *drv = bss->drv; 9489 int ifindex = if_nametoindex(ifname); 9490 9491 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d", 9492 __func__, type, ifname, ifindex, bss->added_if); 9493 if (ifindex > 0 && bss->added_if) 9494 nl80211_remove_iface(drv, ifindex); 9495 9496 if (type != WPA_IF_AP_BSS) 9497 return 0; 9498 9499 if (bss->added_if_into_bridge) { 9500 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 9501 bss->ifname) < 0) 9502 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 9503 "interface %s from bridge %s: %s", 9504 bss->ifname, bss->brname, strerror(errno)); 9505 } 9506 if (bss->added_bridge) { 9507 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 9508 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 9509 "bridge %s: %s", 9510 bss->brname, strerror(errno)); 9511 } 9512 9513 if (bss != drv->first_bss) { 9514 struct i802_bss *tbss; 9515 9516 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it"); 9517 for (tbss = drv->first_bss; tbss; tbss = tbss->next) { 9518 if (tbss->next == bss) { 9519 tbss->next = bss->next; 9520 /* Unsubscribe management frames */ 9521 nl80211_teardown_ap(bss); 9522 nl80211_destroy_bss(bss); 9523 os_free(bss); 9524 bss = NULL; 9525 break; 9526 } 9527 } 9528 if (bss) 9529 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 9530 "BSS %p in the list", __func__, bss); 9531 } else { 9532 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context"); 9533 nl80211_teardown_ap(bss); 9534 if (!bss->added_if && !drv->first_bss->next) 9535 wpa_driver_nl80211_del_beacon(drv); 9536 nl80211_destroy_bss(bss); 9537 if (!bss->added_if) 9538 i802_set_iface_flags(bss, 0); 9539 if (drv->first_bss->next) { 9540 drv->first_bss = drv->first_bss->next; 9541 drv->ctx = drv->first_bss->ctx; 9542 os_free(bss); 9543 } else { 9544 wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to"); 9545 } 9546 } 9547 9548 return 0; 9549} 9550 9551 9552static int cookie_handler(struct nl_msg *msg, void *arg) 9553{ 9554 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 9555 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 9556 u64 *cookie = arg; 9557 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 9558 genlmsg_attrlen(gnlh, 0), NULL); 9559 if (tb[NL80211_ATTR_COOKIE]) 9560 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 9561 return NL_SKIP; 9562} 9563 9564 9565static int nl80211_send_frame_cmd(struct i802_bss *bss, 9566 unsigned int freq, unsigned int wait, 9567 const u8 *buf, size_t buf_len, 9568 u64 *cookie_out, int no_cck, int no_ack, 9569 int offchanok) 9570{ 9571 struct wpa_driver_nl80211_data *drv = bss->drv; 9572 struct nl_msg *msg; 9573 u64 cookie; 9574 int ret = -1; 9575 9576 msg = nlmsg_alloc(); 9577 if (!msg) 9578 return -1; 9579 9580 wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d " 9581 "no_ack=%d offchanok=%d", 9582 freq, wait, no_cck, no_ack, offchanok); 9583 wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len); 9584 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 9585 9586 if (nl80211_set_iface_id(msg, bss) < 0) 9587 goto nla_put_failure; 9588 if (freq) 9589 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 9590 if (wait) 9591 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 9592 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 9593 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 9594 if (no_cck) 9595 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 9596 if (no_ack) 9597 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 9598 9599 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 9600 9601 cookie = 0; 9602 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 9603 msg = NULL; 9604 if (ret) { 9605 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 9606 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 9607 freq, wait); 9608 goto nla_put_failure; 9609 } 9610 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; " 9611 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 9612 (long long unsigned int) cookie); 9613 9614 if (cookie_out) 9615 *cookie_out = no_ack ? (u64) -1 : cookie; 9616 9617nla_put_failure: 9618 nlmsg_free(msg); 9619 return ret; 9620} 9621 9622 9623static int wpa_driver_nl80211_send_action(struct i802_bss *bss, 9624 unsigned int freq, 9625 unsigned int wait_time, 9626 const u8 *dst, const u8 *src, 9627 const u8 *bssid, 9628 const u8 *data, size_t data_len, 9629 int no_cck) 9630{ 9631 struct wpa_driver_nl80211_data *drv = bss->drv; 9632 int ret = -1; 9633 u8 *buf; 9634 struct ieee80211_hdr *hdr; 9635 9636 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 9637 "freq=%u MHz wait=%d ms no_cck=%d)", 9638 drv->ifindex, freq, wait_time, no_cck); 9639 9640 buf = os_zalloc(24 + data_len); 9641 if (buf == NULL) 9642 return ret; 9643 os_memcpy(buf + 24, data, data_len); 9644 hdr = (struct ieee80211_hdr *) buf; 9645 hdr->frame_control = 9646 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 9647 os_memcpy(hdr->addr1, dst, ETH_ALEN); 9648 os_memcpy(hdr->addr2, src, ETH_ALEN); 9649 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 9650 9651 if (is_ap_interface(drv->nlmode) && 9652 (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) || 9653 (int) freq == bss->freq || drv->device_ap_sme || 9654 !drv->use_monitor)) 9655 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len, 9656 0, freq, no_cck, 1, 9657 wait_time); 9658 else 9659 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 9660 24 + data_len, 9661 &drv->send_action_cookie, 9662 no_cck, 0, 1); 9663 9664 os_free(buf); 9665 return ret; 9666} 9667 9668 9669static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 9670{ 9671 struct i802_bss *bss = priv; 9672 struct wpa_driver_nl80211_data *drv = bss->drv; 9673 struct nl_msg *msg; 9674 int ret; 9675 9676 msg = nlmsg_alloc(); 9677 if (!msg) 9678 return; 9679 9680 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx", 9681 (long long unsigned int) drv->send_action_cookie); 9682 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 9683 9684 if (nl80211_set_iface_id(msg, bss) < 0) 9685 goto nla_put_failure; 9686 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 9687 9688 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9689 msg = NULL; 9690 if (ret) 9691 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 9692 "(%s)", ret, strerror(-ret)); 9693 9694 nla_put_failure: 9695 nlmsg_free(msg); 9696} 9697 9698 9699static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 9700 unsigned int duration) 9701{ 9702 struct i802_bss *bss = priv; 9703 struct wpa_driver_nl80211_data *drv = bss->drv; 9704 struct nl_msg *msg; 9705 int ret; 9706 u64 cookie; 9707 9708 msg = nlmsg_alloc(); 9709 if (!msg) 9710 return -1; 9711 9712 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 9713 9714 if (nl80211_set_iface_id(msg, bss) < 0) 9715 goto nla_put_failure; 9716 9717 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 9718 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 9719 9720 cookie = 0; 9721 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 9722 msg = NULL; 9723 if (ret == 0) { 9724 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 9725 "0x%llx for freq=%u MHz duration=%u", 9726 (long long unsigned int) cookie, freq, duration); 9727 drv->remain_on_chan_cookie = cookie; 9728 drv->pending_remain_on_chan = 1; 9729 return 0; 9730 } 9731 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 9732 "(freq=%d duration=%u): %d (%s)", 9733 freq, duration, ret, strerror(-ret)); 9734nla_put_failure: 9735 nlmsg_free(msg); 9736 return -1; 9737} 9738 9739 9740static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 9741{ 9742 struct i802_bss *bss = priv; 9743 struct wpa_driver_nl80211_data *drv = bss->drv; 9744 struct nl_msg *msg; 9745 int ret; 9746 9747 if (!drv->pending_remain_on_chan) { 9748 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 9749 "to cancel"); 9750 return -1; 9751 } 9752 9753 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 9754 "0x%llx", 9755 (long long unsigned int) drv->remain_on_chan_cookie); 9756 9757 msg = nlmsg_alloc(); 9758 if (!msg) 9759 return -1; 9760 9761 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 9762 9763 if (nl80211_set_iface_id(msg, bss) < 0) 9764 goto nla_put_failure; 9765 9766 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 9767 9768 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9769 msg = NULL; 9770 if (ret == 0) 9771 return 0; 9772 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 9773 "%d (%s)", ret, strerror(-ret)); 9774nla_put_failure: 9775 nlmsg_free(msg); 9776 return -1; 9777} 9778 9779 9780static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report) 9781{ 9782 struct wpa_driver_nl80211_data *drv = bss->drv; 9783 9784 if (!report) { 9785 if (bss->nl_preq && drv->device_ap_sme && 9786 is_ap_interface(drv->nlmode)) { 9787 /* 9788 * Do not disable Probe Request reporting that was 9789 * enabled in nl80211_setup_ap(). 9790 */ 9791 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 9792 "Probe Request reporting nl_preq=%p while " 9793 "in AP mode", bss->nl_preq); 9794 } else if (bss->nl_preq) { 9795 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 9796 "reporting nl_preq=%p", bss->nl_preq); 9797 nl80211_destroy_eloop_handle(&bss->nl_preq); 9798 } 9799 return 0; 9800 } 9801 9802 if (bss->nl_preq) { 9803 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 9804 "already on! nl_preq=%p", bss->nl_preq); 9805 return 0; 9806 } 9807 9808 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 9809 if (bss->nl_preq == NULL) 9810 return -1; 9811 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 9812 "reporting nl_preq=%p", bss->nl_preq); 9813 9814 if (nl80211_register_frame(bss, bss->nl_preq, 9815 (WLAN_FC_TYPE_MGMT << 2) | 9816 (WLAN_FC_STYPE_PROBE_REQ << 4), 9817 NULL, 0) < 0) 9818 goto out_err; 9819 9820 nl80211_register_eloop_read(&bss->nl_preq, 9821 wpa_driver_nl80211_event_receive, 9822 bss->nl_cb); 9823 9824 return 0; 9825 9826 out_err: 9827 nl_destroy_handles(&bss->nl_preq); 9828 return -1; 9829} 9830 9831 9832static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 9833 int ifindex, int disabled) 9834{ 9835 struct nl_msg *msg; 9836 struct nlattr *bands, *band; 9837 int ret; 9838 9839 msg = nlmsg_alloc(); 9840 if (!msg) 9841 return -1; 9842 9843 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 9844 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 9845 9846 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 9847 if (!bands) 9848 goto nla_put_failure; 9849 9850 /* 9851 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 9852 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 9853 * rates. All 5 GHz rates are left enabled. 9854 */ 9855 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 9856 if (!band) 9857 goto nla_put_failure; 9858 if (disabled) { 9859 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 9860 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 9861 } 9862 nla_nest_end(msg, band); 9863 9864 nla_nest_end(msg, bands); 9865 9866 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 9867 msg = NULL; 9868 if (ret) { 9869 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 9870 "(%s)", ret, strerror(-ret)); 9871 } else 9872 drv->disabled_11b_rates = disabled; 9873 9874 return ret; 9875 9876nla_put_failure: 9877 nlmsg_free(msg); 9878 return -1; 9879} 9880 9881 9882static int wpa_driver_nl80211_deinit_ap(void *priv) 9883{ 9884 struct i802_bss *bss = priv; 9885 struct wpa_driver_nl80211_data *drv = bss->drv; 9886 if (!is_ap_interface(drv->nlmode)) 9887 return -1; 9888 wpa_driver_nl80211_del_beacon(drv); 9889 9890 /* 9891 * If the P2P GO interface was dynamically added, then it is 9892 * possible that the interface change to station is not possible. 9893 */ 9894 if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic) 9895 return 0; 9896 9897 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 9898} 9899 9900 9901static int wpa_driver_nl80211_stop_ap(void *priv) 9902{ 9903 struct i802_bss *bss = priv; 9904 struct wpa_driver_nl80211_data *drv = bss->drv; 9905 if (!is_ap_interface(drv->nlmode)) 9906 return -1; 9907 wpa_driver_nl80211_del_beacon(drv); 9908 bss->beacon_set = 0; 9909 return 0; 9910} 9911 9912 9913static int wpa_driver_nl80211_deinit_p2p_cli(void *priv) 9914{ 9915 struct i802_bss *bss = priv; 9916 struct wpa_driver_nl80211_data *drv = bss->drv; 9917 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT) 9918 return -1; 9919 9920 /* 9921 * If the P2P Client interface was dynamically added, then it is 9922 * possible that the interface change to station is not possible. 9923 */ 9924 if (bss->if_dynamic) 9925 return 0; 9926 9927 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 9928} 9929 9930 9931static void wpa_driver_nl80211_resume(void *priv) 9932{ 9933 struct i802_bss *bss = priv; 9934 9935 if (i802_set_iface_flags(bss, 1)) 9936 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event"); 9937} 9938 9939 9940static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 9941 const u8 *ies, size_t ies_len) 9942{ 9943 struct i802_bss *bss = priv; 9944 struct wpa_driver_nl80211_data *drv = bss->drv; 9945 int ret; 9946 u8 *data, *pos; 9947 size_t data_len; 9948 const u8 *own_addr = bss->addr; 9949 9950 if (action != 1) { 9951 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 9952 "action %d", action); 9953 return -1; 9954 } 9955 9956 /* 9957 * Action frame payload: 9958 * Category[1] = 6 (Fast BSS Transition) 9959 * Action[1] = 1 (Fast BSS Transition Request) 9960 * STA Address 9961 * Target AP Address 9962 * FT IEs 9963 */ 9964 9965 data_len = 2 + 2 * ETH_ALEN + ies_len; 9966 data = os_malloc(data_len); 9967 if (data == NULL) 9968 return -1; 9969 pos = data; 9970 *pos++ = 0x06; /* FT Action category */ 9971 *pos++ = action; 9972 os_memcpy(pos, own_addr, ETH_ALEN); 9973 pos += ETH_ALEN; 9974 os_memcpy(pos, target_ap, ETH_ALEN); 9975 pos += ETH_ALEN; 9976 os_memcpy(pos, ies, ies_len); 9977 9978 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 9979 drv->bssid, own_addr, drv->bssid, 9980 data, data_len, 0); 9981 os_free(data); 9982 9983 return ret; 9984} 9985 9986 9987static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 9988{ 9989 struct i802_bss *bss = priv; 9990 struct wpa_driver_nl80211_data *drv = bss->drv; 9991 struct nl_msg *msg; 9992 struct nlattr *cqm; 9993 int ret = -1; 9994 9995 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 9996 "hysteresis=%d", threshold, hysteresis); 9997 9998 msg = nlmsg_alloc(); 9999 if (!msg) 10000 return -1; 10001 10002 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 10003 10004 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 10005 10006 cqm = nla_nest_start(msg, NL80211_ATTR_CQM); 10007 if (cqm == NULL) 10008 goto nla_put_failure; 10009 10010 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 10011 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 10012 nla_nest_end(msg, cqm); 10013 10014 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 10015 msg = NULL; 10016 10017nla_put_failure: 10018 nlmsg_free(msg); 10019 return ret; 10020} 10021 10022 10023/* Converts nl80211_chan_width to a common format */ 10024static enum chan_width convert2width(int width) 10025{ 10026 switch (width) { 10027 case NL80211_CHAN_WIDTH_20_NOHT: 10028 return CHAN_WIDTH_20_NOHT; 10029 case NL80211_CHAN_WIDTH_20: 10030 return CHAN_WIDTH_20; 10031 case NL80211_CHAN_WIDTH_40: 10032 return CHAN_WIDTH_40; 10033 case NL80211_CHAN_WIDTH_80: 10034 return CHAN_WIDTH_80; 10035 case NL80211_CHAN_WIDTH_80P80: 10036 return CHAN_WIDTH_80P80; 10037 case NL80211_CHAN_WIDTH_160: 10038 return CHAN_WIDTH_160; 10039 } 10040 return CHAN_WIDTH_UNKNOWN; 10041} 10042 10043 10044static int get_channel_width(struct nl_msg *msg, void *arg) 10045{ 10046 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 10047 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 10048 struct wpa_signal_info *sig_change = arg; 10049 10050 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 10051 genlmsg_attrlen(gnlh, 0), NULL); 10052 10053 sig_change->center_frq1 = -1; 10054 sig_change->center_frq2 = -1; 10055 sig_change->chanwidth = CHAN_WIDTH_UNKNOWN; 10056 10057 if (tb[NL80211_ATTR_CHANNEL_WIDTH]) { 10058 sig_change->chanwidth = convert2width( 10059 nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH])); 10060 if (tb[NL80211_ATTR_CENTER_FREQ1]) 10061 sig_change->center_frq1 = 10062 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]); 10063 if (tb[NL80211_ATTR_CENTER_FREQ2]) 10064 sig_change->center_frq2 = 10065 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]); 10066 } 10067 10068 return NL_SKIP; 10069} 10070 10071 10072static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv, 10073 struct wpa_signal_info *sig) 10074{ 10075 struct nl_msg *msg; 10076 10077 msg = nlmsg_alloc(); 10078 if (!msg) 10079 return -ENOMEM; 10080 10081 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_INTERFACE); 10082 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 10083 10084 return send_and_recv_msgs(drv, msg, get_channel_width, sig); 10085 10086nla_put_failure: 10087 nlmsg_free(msg); 10088 return -ENOBUFS; 10089} 10090 10091 10092static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 10093{ 10094 struct i802_bss *bss = priv; 10095 struct wpa_driver_nl80211_data *drv = bss->drv; 10096 int res; 10097 10098 os_memset(si, 0, sizeof(*si)); 10099 res = nl80211_get_link_signal(drv, si); 10100 if (res != 0) 10101 return res; 10102 10103 res = nl80211_get_channel_width(drv, si); 10104 if (res != 0) 10105 return res; 10106 10107 return nl80211_get_link_noise(drv, si); 10108} 10109 10110 10111static int wpa_driver_nl80211_shared_freq(void *priv) 10112{ 10113 struct i802_bss *bss = priv; 10114 struct wpa_driver_nl80211_data *drv = bss->drv; 10115 struct wpa_driver_nl80211_data *driver; 10116 int freq = 0; 10117 10118 /* 10119 * If the same PHY is in connected state with some other interface, 10120 * then retrieve the assoc freq. 10121 */ 10122 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 10123 drv->phyname); 10124 10125 dl_list_for_each(driver, &drv->global->interfaces, 10126 struct wpa_driver_nl80211_data, list) { 10127 if (drv == driver || 10128 os_strcmp(drv->phyname, driver->phyname) != 0 || 10129 !driver->associated) 10130 continue; 10131 10132 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 10133 MACSTR, 10134 driver->phyname, driver->first_bss->ifname, 10135 MAC2STR(driver->first_bss->addr)); 10136 if (is_ap_interface(driver->nlmode)) 10137 freq = driver->first_bss->freq; 10138 else 10139 freq = nl80211_get_assoc_freq(driver); 10140 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 10141 drv->phyname, freq); 10142 } 10143 10144 if (!freq) 10145 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 10146 "PHY (%s) in associated state", drv->phyname); 10147 10148 return freq; 10149} 10150 10151 10152static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 10153 int encrypt) 10154{ 10155 struct i802_bss *bss = priv; 10156 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 10157 0, 0, 0, 0); 10158} 10159 10160 10161static int nl80211_set_param(void *priv, const char *param) 10162{ 10163 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 10164 if (param == NULL) 10165 return 0; 10166 10167#ifdef CONFIG_P2P 10168 if (os_strstr(param, "use_p2p_group_interface=1")) { 10169 struct i802_bss *bss = priv; 10170 struct wpa_driver_nl80211_data *drv = bss->drv; 10171 10172 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 10173 "interface"); 10174 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 10175 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 10176 } 10177 10178 if (os_strstr(param, "p2p_device=1")) { 10179 struct i802_bss *bss = priv; 10180 struct wpa_driver_nl80211_data *drv = bss->drv; 10181 drv->allow_p2p_device = 1; 10182 } 10183#endif /* CONFIG_P2P */ 10184 10185 return 0; 10186} 10187 10188 10189static void * nl80211_global_init(void) 10190{ 10191 struct nl80211_global *global; 10192 struct netlink_config *cfg; 10193 10194 global = os_zalloc(sizeof(*global)); 10195 if (global == NULL) 10196 return NULL; 10197 global->ioctl_sock = -1; 10198 dl_list_init(&global->interfaces); 10199 global->if_add_ifindex = -1; 10200 10201 cfg = os_zalloc(sizeof(*cfg)); 10202 if (cfg == NULL) 10203 goto err; 10204 10205 cfg->ctx = global; 10206 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 10207 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 10208 global->netlink = netlink_init(cfg); 10209 if (global->netlink == NULL) { 10210 os_free(cfg); 10211 goto err; 10212 } 10213 10214 if (wpa_driver_nl80211_init_nl_global(global) < 0) 10215 goto err; 10216 10217 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 10218 if (global->ioctl_sock < 0) { 10219 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s", 10220 strerror(errno)); 10221 goto err; 10222 } 10223 10224 return global; 10225 10226err: 10227 nl80211_global_deinit(global); 10228 return NULL; 10229} 10230 10231 10232static void nl80211_global_deinit(void *priv) 10233{ 10234 struct nl80211_global *global = priv; 10235 if (global == NULL) 10236 return; 10237 if (!dl_list_empty(&global->interfaces)) { 10238 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 10239 "nl80211_global_deinit", 10240 dl_list_len(&global->interfaces)); 10241 } 10242 10243 if (global->netlink) 10244 netlink_deinit(global->netlink); 10245 10246 nl_destroy_handles(&global->nl); 10247 10248 if (global->nl_event) 10249 nl80211_destroy_eloop_handle(&global->nl_event); 10250 10251 nl_cb_put(global->nl_cb); 10252 10253 if (global->ioctl_sock >= 0) 10254 close(global->ioctl_sock); 10255 10256 os_free(global); 10257} 10258 10259 10260static const char * nl80211_get_radio_name(void *priv) 10261{ 10262 struct i802_bss *bss = priv; 10263 struct wpa_driver_nl80211_data *drv = bss->drv; 10264 return drv->phyname; 10265} 10266 10267 10268static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 10269 const u8 *pmkid) 10270{ 10271 struct nl_msg *msg; 10272 10273 msg = nlmsg_alloc(); 10274 if (!msg) 10275 return -ENOMEM; 10276 10277 nl80211_cmd(bss->drv, msg, 0, cmd); 10278 10279 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 10280 if (pmkid) 10281 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 10282 if (bssid) 10283 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 10284 10285 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 10286 nla_put_failure: 10287 nlmsg_free(msg); 10288 return -ENOBUFS; 10289} 10290 10291 10292static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 10293{ 10294 struct i802_bss *bss = priv; 10295 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 10296 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 10297} 10298 10299 10300static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 10301{ 10302 struct i802_bss *bss = priv; 10303 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 10304 MAC2STR(bssid)); 10305 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 10306} 10307 10308 10309static int nl80211_flush_pmkid(void *priv) 10310{ 10311 struct i802_bss *bss = priv; 10312 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 10313 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 10314} 10315 10316 10317static void clean_survey_results(struct survey_results *survey_results) 10318{ 10319 struct freq_survey *survey, *tmp; 10320 10321 if (dl_list_empty(&survey_results->survey_list)) 10322 return; 10323 10324 dl_list_for_each_safe(survey, tmp, &survey_results->survey_list, 10325 struct freq_survey, list) { 10326 dl_list_del(&survey->list); 10327 os_free(survey); 10328 } 10329} 10330 10331 10332static void add_survey(struct nlattr **sinfo, u32 ifidx, 10333 struct dl_list *survey_list) 10334{ 10335 struct freq_survey *survey; 10336 10337 survey = os_zalloc(sizeof(struct freq_survey)); 10338 if (!survey) 10339 return; 10340 10341 survey->ifidx = ifidx; 10342 survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]); 10343 survey->filled = 0; 10344 10345 if (sinfo[NL80211_SURVEY_INFO_NOISE]) { 10346 survey->nf = (int8_t) 10347 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 10348 survey->filled |= SURVEY_HAS_NF; 10349 } 10350 10351 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) { 10352 survey->channel_time = 10353 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]); 10354 survey->filled |= SURVEY_HAS_CHAN_TIME; 10355 } 10356 10357 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) { 10358 survey->channel_time_busy = 10359 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]); 10360 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY; 10361 } 10362 10363 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) { 10364 survey->channel_time_rx = 10365 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]); 10366 survey->filled |= SURVEY_HAS_CHAN_TIME_RX; 10367 } 10368 10369 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) { 10370 survey->channel_time_tx = 10371 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]); 10372 survey->filled |= SURVEY_HAS_CHAN_TIME_TX; 10373 } 10374 10375 wpa_printf(MSG_DEBUG, "nl80211: Freq survey dump event (freq=%d MHz noise=%d channel_time=%ld busy_time=%ld tx_time=%ld rx_time=%ld filled=%04x)", 10376 survey->freq, 10377 survey->nf, 10378 (unsigned long int) survey->channel_time, 10379 (unsigned long int) survey->channel_time_busy, 10380 (unsigned long int) survey->channel_time_tx, 10381 (unsigned long int) survey->channel_time_rx, 10382 survey->filled); 10383 10384 dl_list_add_tail(survey_list, &survey->list); 10385} 10386 10387 10388static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq, 10389 unsigned int freq_filter) 10390{ 10391 if (!freq_filter) 10392 return 1; 10393 10394 return freq_filter == surveyed_freq; 10395} 10396 10397 10398static int survey_handler(struct nl_msg *msg, void *arg) 10399{ 10400 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 10401 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 10402 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 10403 struct survey_results *survey_results; 10404 u32 surveyed_freq = 0; 10405 u32 ifidx; 10406 10407 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 10408 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 10409 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 10410 }; 10411 10412 survey_results = (struct survey_results *) arg; 10413 10414 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 10415 genlmsg_attrlen(gnlh, 0), NULL); 10416 10417 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 10418 10419 if (!tb[NL80211_ATTR_SURVEY_INFO]) 10420 return NL_SKIP; 10421 10422 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 10423 tb[NL80211_ATTR_SURVEY_INFO], 10424 survey_policy)) 10425 return NL_SKIP; 10426 10427 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) { 10428 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data"); 10429 return NL_SKIP; 10430 } 10431 10432 surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]); 10433 10434 if (!check_survey_ok(sinfo, surveyed_freq, 10435 survey_results->freq_filter)) 10436 return NL_SKIP; 10437 10438 if (survey_results->freq_filter && 10439 survey_results->freq_filter != surveyed_freq) { 10440 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz", 10441 surveyed_freq); 10442 return NL_SKIP; 10443 } 10444 10445 add_survey(sinfo, ifidx, &survey_results->survey_list); 10446 10447 return NL_SKIP; 10448} 10449 10450 10451static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq) 10452{ 10453 struct i802_bss *bss = priv; 10454 struct wpa_driver_nl80211_data *drv = bss->drv; 10455 struct nl_msg *msg; 10456 int err = -ENOBUFS; 10457 union wpa_event_data data; 10458 struct survey_results *survey_results; 10459 10460 os_memset(&data, 0, sizeof(data)); 10461 survey_results = &data.survey_results; 10462 10463 dl_list_init(&survey_results->survey_list); 10464 10465 msg = nlmsg_alloc(); 10466 if (!msg) 10467 goto nla_put_failure; 10468 10469 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 10470 10471 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 10472 10473 if (freq) 10474 data.survey_results.freq_filter = freq; 10475 10476 do { 10477 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data"); 10478 err = send_and_recv_msgs(drv, msg, survey_handler, 10479 survey_results); 10480 } while (err > 0); 10481 10482 if (err) { 10483 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data"); 10484 goto out_clean; 10485 } 10486 10487 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data); 10488 10489out_clean: 10490 clean_survey_results(survey_results); 10491nla_put_failure: 10492 return err; 10493} 10494 10495 10496static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 10497 const u8 *replay_ctr) 10498{ 10499 struct i802_bss *bss = priv; 10500 struct wpa_driver_nl80211_data *drv = bss->drv; 10501 struct nlattr *replay_nested; 10502 struct nl_msg *msg; 10503 10504 msg = nlmsg_alloc(); 10505 if (!msg) 10506 return; 10507 10508 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 10509 10510 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 10511 10512 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 10513 if (!replay_nested) 10514 goto nla_put_failure; 10515 10516 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 10517 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 10518 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 10519 replay_ctr); 10520 10521 nla_nest_end(msg, replay_nested); 10522 10523 send_and_recv_msgs(drv, msg, NULL, NULL); 10524 return; 10525 nla_put_failure: 10526 nlmsg_free(msg); 10527} 10528 10529 10530static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 10531 const u8 *addr, int qos) 10532{ 10533 /* send data frame to poll STA and check whether 10534 * this frame is ACKed */ 10535 struct { 10536 struct ieee80211_hdr hdr; 10537 u16 qos_ctl; 10538 } STRUCT_PACKED nulldata; 10539 size_t size; 10540 10541 /* Send data frame to poll STA and check whether this frame is ACKed */ 10542 10543 os_memset(&nulldata, 0, sizeof(nulldata)); 10544 10545 if (qos) { 10546 nulldata.hdr.frame_control = 10547 IEEE80211_FC(WLAN_FC_TYPE_DATA, 10548 WLAN_FC_STYPE_QOS_NULL); 10549 size = sizeof(nulldata); 10550 } else { 10551 nulldata.hdr.frame_control = 10552 IEEE80211_FC(WLAN_FC_TYPE_DATA, 10553 WLAN_FC_STYPE_NULLFUNC); 10554 size = sizeof(struct ieee80211_hdr); 10555 } 10556 10557 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 10558 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 10559 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 10560 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 10561 10562 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0, 10563 0, 0) < 0) 10564 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 10565 "send poll frame"); 10566} 10567 10568static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 10569 int qos) 10570{ 10571 struct i802_bss *bss = priv; 10572 struct wpa_driver_nl80211_data *drv = bss->drv; 10573 struct nl_msg *msg; 10574 10575 if (!drv->poll_command_supported) { 10576 nl80211_send_null_frame(bss, own_addr, addr, qos); 10577 return; 10578 } 10579 10580 msg = nlmsg_alloc(); 10581 if (!msg) 10582 return; 10583 10584 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 10585 10586 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 10587 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 10588 10589 send_and_recv_msgs(drv, msg, NULL, NULL); 10590 return; 10591 nla_put_failure: 10592 nlmsg_free(msg); 10593} 10594 10595 10596static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 10597{ 10598 struct nl_msg *msg; 10599 10600 msg = nlmsg_alloc(); 10601 if (!msg) 10602 return -ENOMEM; 10603 10604 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 10605 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 10606 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 10607 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 10608 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 10609nla_put_failure: 10610 nlmsg_free(msg); 10611 return -ENOBUFS; 10612} 10613 10614 10615static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 10616 int ctwindow) 10617{ 10618 struct i802_bss *bss = priv; 10619 10620 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 10621 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 10622 10623 if (opp_ps != -1 || ctwindow != -1) { 10624#ifdef ANDROID_P2P 10625 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 10626#else /* ANDROID_P2P */ 10627 return -1; /* Not yet supported */ 10628#endif /* ANDROID_P2P */ 10629 } 10630 10631 if (legacy_ps == -1) 10632 return 0; 10633 if (legacy_ps != 0 && legacy_ps != 1) 10634 return -1; /* Not yet supported */ 10635 10636 return nl80211_set_power_save(bss, legacy_ps); 10637} 10638 10639 10640static int nl80211_start_radar_detection(void *priv, 10641 struct hostapd_freq_params *freq) 10642{ 10643 struct i802_bss *bss = priv; 10644 struct wpa_driver_nl80211_data *drv = bss->drv; 10645 struct nl_msg *msg; 10646 int ret; 10647 10648 wpa_printf(MSG_DEBUG, "nl80211: Start radar detection (CAC) %d MHz (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)", 10649 freq->freq, freq->ht_enabled, freq->vht_enabled, 10650 freq->bandwidth, freq->center_freq1, freq->center_freq2); 10651 10652 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) { 10653 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar " 10654 "detection"); 10655 return -1; 10656 } 10657 10658 msg = nlmsg_alloc(); 10659 if (!msg) 10660 return -1; 10661 10662 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_RADAR_DETECT); 10663 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 10664 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq); 10665 10666 if (freq->vht_enabled) { 10667 switch (freq->bandwidth) { 10668 case 20: 10669 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 10670 NL80211_CHAN_WIDTH_20); 10671 break; 10672 case 40: 10673 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 10674 NL80211_CHAN_WIDTH_40); 10675 break; 10676 case 80: 10677 if (freq->center_freq2) 10678 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 10679 NL80211_CHAN_WIDTH_80P80); 10680 else 10681 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 10682 NL80211_CHAN_WIDTH_80); 10683 break; 10684 case 160: 10685 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, 10686 NL80211_CHAN_WIDTH_160); 10687 break; 10688 default: 10689 return -1; 10690 } 10691 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1); 10692 if (freq->center_freq2) 10693 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2, 10694 freq->center_freq2); 10695 } else if (freq->ht_enabled) { 10696 switch (freq->sec_channel_offset) { 10697 case -1: 10698 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 10699 NL80211_CHAN_HT40MINUS); 10700 break; 10701 case 1: 10702 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 10703 NL80211_CHAN_HT40PLUS); 10704 break; 10705 default: 10706 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 10707 NL80211_CHAN_HT20); 10708 break; 10709 } 10710 } 10711 10712 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 10713 if (ret == 0) 10714 return 0; 10715 wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: " 10716 "%d (%s)", ret, strerror(-ret)); 10717nla_put_failure: 10718 return -1; 10719} 10720 10721#ifdef CONFIG_TDLS 10722 10723static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 10724 u8 dialog_token, u16 status_code, 10725 const u8 *buf, size_t len) 10726{ 10727 struct i802_bss *bss = priv; 10728 struct wpa_driver_nl80211_data *drv = bss->drv; 10729 struct nl_msg *msg; 10730 10731 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 10732 return -EOPNOTSUPP; 10733 10734 if (!dst) 10735 return -EINVAL; 10736 10737 msg = nlmsg_alloc(); 10738 if (!msg) 10739 return -ENOMEM; 10740 10741 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 10742 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 10743 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 10744 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 10745 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 10746 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 10747 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 10748 10749 return send_and_recv_msgs(drv, msg, NULL, NULL); 10750 10751nla_put_failure: 10752 nlmsg_free(msg); 10753 return -ENOBUFS; 10754} 10755 10756 10757static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 10758{ 10759 struct i802_bss *bss = priv; 10760 struct wpa_driver_nl80211_data *drv = bss->drv; 10761 struct nl_msg *msg; 10762 enum nl80211_tdls_operation nl80211_oper; 10763 10764 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 10765 return -EOPNOTSUPP; 10766 10767 switch (oper) { 10768 case TDLS_DISCOVERY_REQ: 10769 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 10770 break; 10771 case TDLS_SETUP: 10772 nl80211_oper = NL80211_TDLS_SETUP; 10773 break; 10774 case TDLS_TEARDOWN: 10775 nl80211_oper = NL80211_TDLS_TEARDOWN; 10776 break; 10777 case TDLS_ENABLE_LINK: 10778 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 10779 break; 10780 case TDLS_DISABLE_LINK: 10781 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 10782 break; 10783 case TDLS_ENABLE: 10784 return 0; 10785 case TDLS_DISABLE: 10786 return 0; 10787 default: 10788 return -EINVAL; 10789 } 10790 10791 msg = nlmsg_alloc(); 10792 if (!msg) 10793 return -ENOMEM; 10794 10795 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 10796 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 10797 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 10798 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 10799 10800 return send_and_recv_msgs(drv, msg, NULL, NULL); 10801 10802nla_put_failure: 10803 nlmsg_free(msg); 10804 return -ENOBUFS; 10805} 10806 10807#endif /* CONFIG TDLS */ 10808 10809 10810#ifdef ANDROID 10811 10812typedef struct android_wifi_priv_cmd { 10813 char *buf; 10814 int used_len; 10815 int total_len; 10816} android_wifi_priv_cmd; 10817 10818static int drv_errors = 0; 10819 10820static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 10821{ 10822 drv_errors++; 10823 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 10824 drv_errors = 0; 10825 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 10826 } 10827} 10828 10829 10830static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 10831{ 10832 struct wpa_driver_nl80211_data *drv = bss->drv; 10833 struct ifreq ifr; 10834 android_wifi_priv_cmd priv_cmd; 10835 char buf[MAX_DRV_CMD_SIZE]; 10836 int ret; 10837 10838 os_memset(&ifr, 0, sizeof(ifr)); 10839 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 10840 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 10841 10842 os_memset(buf, 0, sizeof(buf)); 10843 os_strlcpy(buf, cmd, sizeof(buf)); 10844 10845 priv_cmd.buf = buf; 10846 priv_cmd.used_len = sizeof(buf); 10847 priv_cmd.total_len = sizeof(buf); 10848 ifr.ifr_data = &priv_cmd; 10849 10850 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 10851 if (ret < 0) { 10852 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 10853 __func__); 10854 wpa_driver_send_hang_msg(drv); 10855 return ret; 10856 } 10857 10858 drv_errors = 0; 10859 return 0; 10860} 10861 10862 10863static int android_pno_start(struct i802_bss *bss, 10864 struct wpa_driver_scan_params *params) 10865{ 10866 struct wpa_driver_nl80211_data *drv = bss->drv; 10867 struct ifreq ifr; 10868 android_wifi_priv_cmd priv_cmd; 10869 int ret = 0, i = 0, bp; 10870 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 10871 10872 bp = WEXT_PNOSETUP_HEADER_SIZE; 10873 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 10874 buf[bp++] = WEXT_PNO_TLV_PREFIX; 10875 buf[bp++] = WEXT_PNO_TLV_VERSION; 10876 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 10877 buf[bp++] = WEXT_PNO_TLV_RESERVED; 10878 10879 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 10880 /* Check that there is enough space needed for 1 more SSID, the 10881 * other sections and null termination */ 10882 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 10883 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 10884 break; 10885 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 10886 params->ssids[i].ssid, 10887 params->ssids[i].ssid_len); 10888 buf[bp++] = WEXT_PNO_SSID_SECTION; 10889 buf[bp++] = params->ssids[i].ssid_len; 10890 os_memcpy(&buf[bp], params->ssids[i].ssid, 10891 params->ssids[i].ssid_len); 10892 bp += params->ssids[i].ssid_len; 10893 i++; 10894 } 10895 10896 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 10897 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 10898 WEXT_PNO_SCAN_INTERVAL); 10899 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 10900 10901 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 10902 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 10903 WEXT_PNO_REPEAT); 10904 bp += WEXT_PNO_REPEAT_LENGTH; 10905 10906 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 10907 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 10908 WEXT_PNO_MAX_REPEAT); 10909 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 10910 10911 memset(&ifr, 0, sizeof(ifr)); 10912 memset(&priv_cmd, 0, sizeof(priv_cmd)); 10913 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 10914 10915 priv_cmd.buf = buf; 10916 priv_cmd.used_len = bp; 10917 priv_cmd.total_len = bp; 10918 ifr.ifr_data = &priv_cmd; 10919 10920 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 10921 10922 if (ret < 0) { 10923 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 10924 ret); 10925 wpa_driver_send_hang_msg(drv); 10926 return ret; 10927 } 10928 10929 drv_errors = 0; 10930 10931 return android_priv_cmd(bss, "PNOFORCE 1"); 10932} 10933 10934 10935static int android_pno_stop(struct i802_bss *bss) 10936{ 10937 return android_priv_cmd(bss, "PNOFORCE 0"); 10938} 10939 10940#endif /* ANDROID */ 10941 10942 10943static int driver_nl80211_set_key(const char *ifname, void *priv, 10944 enum wpa_alg alg, const u8 *addr, 10945 int key_idx, int set_tx, 10946 const u8 *seq, size_t seq_len, 10947 const u8 *key, size_t key_len) 10948{ 10949 struct i802_bss *bss = priv; 10950 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx, 10951 set_tx, seq, seq_len, key, key_len); 10952} 10953 10954 10955static int driver_nl80211_scan2(void *priv, 10956 struct wpa_driver_scan_params *params) 10957{ 10958 struct i802_bss *bss = priv; 10959 return wpa_driver_nl80211_scan(bss, params); 10960} 10961 10962 10963static int driver_nl80211_deauthenticate(void *priv, const u8 *addr, 10964 int reason_code) 10965{ 10966 struct i802_bss *bss = priv; 10967 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code); 10968} 10969 10970 10971static int driver_nl80211_authenticate(void *priv, 10972 struct wpa_driver_auth_params *params) 10973{ 10974 struct i802_bss *bss = priv; 10975 return wpa_driver_nl80211_authenticate(bss, params); 10976} 10977 10978 10979static void driver_nl80211_deinit(void *priv) 10980{ 10981 struct i802_bss *bss = priv; 10982 wpa_driver_nl80211_deinit(bss); 10983} 10984 10985 10986static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type, 10987 const char *ifname) 10988{ 10989 struct i802_bss *bss = priv; 10990 return wpa_driver_nl80211_if_remove(bss, type, ifname); 10991} 10992 10993 10994static int driver_nl80211_send_mlme(void *priv, const u8 *data, 10995 size_t data_len, int noack) 10996{ 10997 struct i802_bss *bss = priv; 10998 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack, 10999 0, 0, 0, 0); 11000} 11001 11002 11003static int driver_nl80211_sta_remove(void *priv, const u8 *addr) 11004{ 11005 struct i802_bss *bss = priv; 11006 return wpa_driver_nl80211_sta_remove(bss, addr); 11007} 11008 11009 11010static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr, 11011 const char *ifname, int vlan_id) 11012{ 11013 struct i802_bss *bss = priv; 11014 return i802_set_sta_vlan(bss, addr, ifname, vlan_id); 11015} 11016 11017 11018static int driver_nl80211_read_sta_data(void *priv, 11019 struct hostap_sta_driver_data *data, 11020 const u8 *addr) 11021{ 11022 struct i802_bss *bss = priv; 11023 return i802_read_sta_data(bss, data, addr); 11024} 11025 11026 11027static int driver_nl80211_send_action(void *priv, unsigned int freq, 11028 unsigned int wait_time, 11029 const u8 *dst, const u8 *src, 11030 const u8 *bssid, 11031 const u8 *data, size_t data_len, 11032 int no_cck) 11033{ 11034 struct i802_bss *bss = priv; 11035 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src, 11036 bssid, data, data_len, no_cck); 11037} 11038 11039 11040static int driver_nl80211_probe_req_report(void *priv, int report) 11041{ 11042 struct i802_bss *bss = priv; 11043 return wpa_driver_nl80211_probe_req_report(bss, report); 11044} 11045 11046 11047static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md, 11048 const u8 *ies, size_t ies_len) 11049{ 11050 int ret; 11051 struct nl_msg *msg; 11052 struct i802_bss *bss = priv; 11053 struct wpa_driver_nl80211_data *drv = bss->drv; 11054 u16 mdid = WPA_GET_LE16(md); 11055 11056 msg = nlmsg_alloc(); 11057 if (!msg) 11058 return -ENOMEM; 11059 11060 wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs"); 11061 nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES); 11062 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 11063 NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies); 11064 NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid); 11065 11066 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 11067 if (ret) { 11068 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed " 11069 "err=%d (%s)", ret, strerror(-ret)); 11070 } 11071 11072 return ret; 11073 11074nla_put_failure: 11075 nlmsg_free(msg); 11076 return -ENOBUFS; 11077} 11078 11079 11080const u8 * wpa_driver_nl80211_get_macaddr(void *priv) 11081{ 11082 struct i802_bss *bss = priv; 11083 struct wpa_driver_nl80211_data *drv = bss->drv; 11084 11085 if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) 11086 return NULL; 11087 11088 return bss->addr; 11089} 11090 11091 11092static const char * scan_state_str(enum scan_states scan_state) 11093{ 11094 switch (scan_state) { 11095 case NO_SCAN: 11096 return "NO_SCAN"; 11097 case SCAN_REQUESTED: 11098 return "SCAN_REQUESTED"; 11099 case SCAN_STARTED: 11100 return "SCAN_STARTED"; 11101 case SCAN_COMPLETED: 11102 return "SCAN_COMPLETED"; 11103 case SCAN_ABORTED: 11104 return "SCAN_ABORTED"; 11105 case SCHED_SCAN_STARTED: 11106 return "SCHED_SCAN_STARTED"; 11107 case SCHED_SCAN_STOPPED: 11108 return "SCHED_SCAN_STOPPED"; 11109 case SCHED_SCAN_RESULTS: 11110 return "SCHED_SCAN_RESULTS"; 11111 } 11112 11113 return "??"; 11114} 11115 11116 11117static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen) 11118{ 11119 struct i802_bss *bss = priv; 11120 struct wpa_driver_nl80211_data *drv = bss->drv; 11121 int res; 11122 char *pos, *end; 11123 11124 pos = buf; 11125 end = buf + buflen; 11126 11127 res = os_snprintf(pos, end - pos, 11128 "ifindex=%d\n" 11129 "ifname=%s\n" 11130 "brname=%s\n" 11131 "addr=" MACSTR "\n" 11132 "freq=%d\n" 11133 "%s%s%s%s%s", 11134 bss->ifindex, 11135 bss->ifname, 11136 bss->brname, 11137 MAC2STR(bss->addr), 11138 bss->freq, 11139 bss->beacon_set ? "beacon_set=1\n" : "", 11140 bss->added_if_into_bridge ? 11141 "added_if_into_bridge=1\n" : "", 11142 bss->added_bridge ? "added_bridge=1\n" : "", 11143 bss->in_deinit ? "in_deinit=1\n" : "", 11144 bss->if_dynamic ? "if_dynamic=1\n" : ""); 11145 if (res < 0 || res >= end - pos) 11146 return pos - buf; 11147 pos += res; 11148 11149 if (bss->wdev_id_set) { 11150 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n", 11151 (unsigned long long) bss->wdev_id); 11152 if (res < 0 || res >= end - pos) 11153 return pos - buf; 11154 pos += res; 11155 } 11156 11157 res = os_snprintf(pos, end - pos, 11158 "phyname=%s\n" 11159 "drv_ifindex=%d\n" 11160 "operstate=%d\n" 11161 "scan_state=%s\n" 11162 "auth_bssid=" MACSTR "\n" 11163 "auth_attempt_bssid=" MACSTR "\n" 11164 "bssid=" MACSTR "\n" 11165 "prev_bssid=" MACSTR "\n" 11166 "associated=%d\n" 11167 "assoc_freq=%u\n" 11168 "monitor_sock=%d\n" 11169 "monitor_ifidx=%d\n" 11170 "monitor_refcount=%d\n" 11171 "last_mgmt_freq=%u\n" 11172 "eapol_tx_sock=%d\n" 11173 "%s%s%s%s%s%s%s%s%s%s%s%s%s", 11174 drv->phyname, 11175 drv->ifindex, 11176 drv->operstate, 11177 scan_state_str(drv->scan_state), 11178 MAC2STR(drv->auth_bssid), 11179 MAC2STR(drv->auth_attempt_bssid), 11180 MAC2STR(drv->bssid), 11181 MAC2STR(drv->prev_bssid), 11182 drv->associated, 11183 drv->assoc_freq, 11184 drv->monitor_sock, 11185 drv->monitor_ifidx, 11186 drv->monitor_refcount, 11187 drv->last_mgmt_freq, 11188 drv->eapol_tx_sock, 11189 drv->ignore_if_down_event ? 11190 "ignore_if_down_event=1\n" : "", 11191 drv->scan_complete_events ? 11192 "scan_complete_events=1\n" : "", 11193 drv->disabled_11b_rates ? 11194 "disabled_11b_rates=1\n" : "", 11195 drv->pending_remain_on_chan ? 11196 "pending_remain_on_chan=1\n" : "", 11197 drv->in_interface_list ? "in_interface_list=1\n" : "", 11198 drv->device_ap_sme ? "device_ap_sme=1\n" : "", 11199 drv->poll_command_supported ? 11200 "poll_command_supported=1\n" : "", 11201 drv->data_tx_status ? "data_tx_status=1\n" : "", 11202 drv->scan_for_auth ? "scan_for_auth=1\n" : "", 11203 drv->retry_auth ? "retry_auth=1\n" : "", 11204 drv->use_monitor ? "use_monitor=1\n" : "", 11205 drv->ignore_next_local_disconnect ? 11206 "ignore_next_local_disconnect=1\n" : "", 11207 drv->allow_p2p_device ? "allow_p2p_device=1\n" : ""); 11208 if (res < 0 || res >= end - pos) 11209 return pos - buf; 11210 pos += res; 11211 11212 if (drv->has_capability) { 11213 res = os_snprintf(pos, end - pos, 11214 "capa.key_mgmt=0x%x\n" 11215 "capa.enc=0x%x\n" 11216 "capa.auth=0x%x\n" 11217 "capa.flags=0x%x\n" 11218 "capa.max_scan_ssids=%d\n" 11219 "capa.max_sched_scan_ssids=%d\n" 11220 "capa.sched_scan_supported=%d\n" 11221 "capa.max_match_sets=%d\n" 11222 "capa.max_remain_on_chan=%u\n" 11223 "capa.max_stations=%u\n" 11224 "capa.probe_resp_offloads=0x%x\n" 11225 "capa.max_acl_mac_addrs=%u\n" 11226 "capa.num_multichan_concurrent=%u\n", 11227 drv->capa.key_mgmt, 11228 drv->capa.enc, 11229 drv->capa.auth, 11230 drv->capa.flags, 11231 drv->capa.max_scan_ssids, 11232 drv->capa.max_sched_scan_ssids, 11233 drv->capa.sched_scan_supported, 11234 drv->capa.max_match_sets, 11235 drv->capa.max_remain_on_chan, 11236 drv->capa.max_stations, 11237 drv->capa.probe_resp_offloads, 11238 drv->capa.max_acl_mac_addrs, 11239 drv->capa.num_multichan_concurrent); 11240 if (res < 0 || res >= end - pos) 11241 return pos - buf; 11242 pos += res; 11243 } 11244 11245 return pos - buf; 11246} 11247 11248 11249static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings) 11250{ 11251 if (settings->head) 11252 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, 11253 settings->head_len, settings->head); 11254 11255 if (settings->tail) 11256 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, 11257 settings->tail_len, settings->tail); 11258 11259 if (settings->beacon_ies) 11260 NLA_PUT(msg, NL80211_ATTR_IE, 11261 settings->beacon_ies_len, settings->beacon_ies); 11262 11263 if (settings->proberesp_ies) 11264 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 11265 settings->proberesp_ies_len, settings->proberesp_ies); 11266 11267 if (settings->assocresp_ies) 11268 NLA_PUT(msg, 11269 NL80211_ATTR_IE_ASSOC_RESP, 11270 settings->assocresp_ies_len, settings->assocresp_ies); 11271 11272 if (settings->probe_resp) 11273 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, 11274 settings->probe_resp_len, settings->probe_resp); 11275 11276 return 0; 11277 11278nla_put_failure: 11279 return -ENOBUFS; 11280} 11281 11282 11283static int nl80211_switch_channel(void *priv, struct csa_settings *settings) 11284{ 11285 struct nl_msg *msg; 11286 struct i802_bss *bss = priv; 11287 struct wpa_driver_nl80211_data *drv = bss->drv; 11288 struct nlattr *beacon_csa; 11289 int ret = -ENOBUFS; 11290 11291 wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d)", 11292 settings->cs_count, settings->block_tx, 11293 settings->freq_params.freq); 11294 11295 if (!drv->channel_switch_supported) { 11296 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command"); 11297 return -EOPNOTSUPP; 11298 } 11299 11300 if ((drv->nlmode != NL80211_IFTYPE_AP) && 11301 (drv->nlmode != NL80211_IFTYPE_P2P_GO)) 11302 return -EOPNOTSUPP; 11303 11304 /* check settings validity */ 11305 if (!settings->beacon_csa.tail || 11306 ((settings->beacon_csa.tail_len <= 11307 settings->counter_offset_beacon) || 11308 (settings->beacon_csa.tail[settings->counter_offset_beacon] != 11309 settings->cs_count))) 11310 return -EINVAL; 11311 11312 if (settings->beacon_csa.probe_resp && 11313 ((settings->beacon_csa.probe_resp_len <= 11314 settings->counter_offset_presp) || 11315 (settings->beacon_csa.probe_resp[settings->counter_offset_presp] != 11316 settings->cs_count))) 11317 return -EINVAL; 11318 11319 msg = nlmsg_alloc(); 11320 if (!msg) 11321 return -ENOMEM; 11322 11323 nl80211_cmd(drv, msg, 0, NL80211_CMD_CHANNEL_SWITCH); 11324 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 11325 NLA_PUT_U32(msg, NL80211_ATTR_CH_SWITCH_COUNT, settings->cs_count); 11326 ret = nl80211_put_freq_params(msg, &settings->freq_params); 11327 if (ret) 11328 goto error; 11329 11330 if (settings->block_tx) 11331 NLA_PUT_FLAG(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX); 11332 11333 /* beacon_after params */ 11334 ret = set_beacon_data(msg, &settings->beacon_after); 11335 if (ret) 11336 goto error; 11337 11338 /* beacon_csa params */ 11339 beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES); 11340 if (!beacon_csa) 11341 goto nla_put_failure; 11342 11343 ret = set_beacon_data(msg, &settings->beacon_csa); 11344 if (ret) 11345 goto error; 11346 11347 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_BEACON, 11348 settings->counter_offset_beacon); 11349 11350 if (settings->beacon_csa.probe_resp) 11351 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_PRESP, 11352 settings->counter_offset_presp); 11353 11354 nla_nest_end(msg, beacon_csa); 11355 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 11356 if (ret) { 11357 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)", 11358 ret, strerror(-ret)); 11359 } 11360 return ret; 11361 11362nla_put_failure: 11363 ret = -ENOBUFS; 11364error: 11365 nlmsg_free(msg); 11366 wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request"); 11367 return ret; 11368} 11369 11370 11371const struct wpa_driver_ops wpa_driver_nl80211_ops = { 11372 .name = "nl80211", 11373 .desc = "Linux nl80211/cfg80211", 11374 .get_bssid = wpa_driver_nl80211_get_bssid, 11375 .get_ssid = wpa_driver_nl80211_get_ssid, 11376 .set_key = driver_nl80211_set_key, 11377 .scan2 = driver_nl80211_scan2, 11378 .sched_scan = wpa_driver_nl80211_sched_scan, 11379 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 11380 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 11381 .deauthenticate = driver_nl80211_deauthenticate, 11382 .authenticate = driver_nl80211_authenticate, 11383 .associate = wpa_driver_nl80211_associate, 11384 .global_init = nl80211_global_init, 11385 .global_deinit = nl80211_global_deinit, 11386 .init2 = wpa_driver_nl80211_init, 11387 .deinit = driver_nl80211_deinit, 11388 .get_capa = wpa_driver_nl80211_get_capa, 11389 .set_operstate = wpa_driver_nl80211_set_operstate, 11390 .set_supp_port = wpa_driver_nl80211_set_supp_port, 11391 .set_country = wpa_driver_nl80211_set_country, 11392 .get_country = wpa_driver_nl80211_get_country, 11393 .set_ap = wpa_driver_nl80211_set_ap, 11394 .set_acl = wpa_driver_nl80211_set_acl, 11395 .if_add = wpa_driver_nl80211_if_add, 11396 .if_remove = driver_nl80211_if_remove, 11397 .send_mlme = driver_nl80211_send_mlme, 11398 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 11399 .sta_add = wpa_driver_nl80211_sta_add, 11400 .sta_remove = driver_nl80211_sta_remove, 11401 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 11402 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 11403 .hapd_init = i802_init, 11404 .hapd_deinit = i802_deinit, 11405 .set_wds_sta = i802_set_wds_sta, 11406 .get_seqnum = i802_get_seqnum, 11407 .flush = i802_flush, 11408 .get_inact_sec = i802_get_inact_sec, 11409 .sta_clear_stats = i802_sta_clear_stats, 11410 .set_rts = i802_set_rts, 11411 .set_frag = i802_set_frag, 11412 .set_tx_queue_params = i802_set_tx_queue_params, 11413 .set_sta_vlan = driver_nl80211_set_sta_vlan, 11414 .sta_deauth = i802_sta_deauth, 11415 .sta_disassoc = i802_sta_disassoc, 11416 .read_sta_data = driver_nl80211_read_sta_data, 11417 .set_freq = i802_set_freq, 11418 .send_action = driver_nl80211_send_action, 11419 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 11420 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 11421 .cancel_remain_on_channel = 11422 wpa_driver_nl80211_cancel_remain_on_channel, 11423 .probe_req_report = driver_nl80211_probe_req_report, 11424 .deinit_ap = wpa_driver_nl80211_deinit_ap, 11425 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli, 11426 .resume = wpa_driver_nl80211_resume, 11427 .send_ft_action = nl80211_send_ft_action, 11428 .signal_monitor = nl80211_signal_monitor, 11429 .signal_poll = nl80211_signal_poll, 11430 .send_frame = nl80211_send_frame, 11431 .shared_freq = wpa_driver_nl80211_shared_freq, 11432 .set_param = nl80211_set_param, 11433 .get_radio_name = nl80211_get_radio_name, 11434 .add_pmkid = nl80211_add_pmkid, 11435 .remove_pmkid = nl80211_remove_pmkid, 11436 .flush_pmkid = nl80211_flush_pmkid, 11437 .set_rekey_info = nl80211_set_rekey_info, 11438 .poll_client = nl80211_poll_client, 11439 .set_p2p_powersave = nl80211_set_p2p_powersave, 11440 .start_dfs_cac = nl80211_start_radar_detection, 11441 .stop_ap = wpa_driver_nl80211_stop_ap, 11442#ifdef CONFIG_TDLS 11443 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 11444 .tdls_oper = nl80211_tdls_oper, 11445#endif /* CONFIG_TDLS */ 11446 .update_ft_ies = wpa_driver_nl80211_update_ft_ies, 11447 .get_mac_addr = wpa_driver_nl80211_get_macaddr, 11448 .get_survey = wpa_driver_nl80211_get_survey, 11449 .status = wpa_driver_nl80211_status, 11450 .switch_channel = nl80211_switch_channel, 11451#ifdef ANDROID_P2P 11452 .set_noa = wpa_driver_set_p2p_noa, 11453 .get_noa = wpa_driver_get_p2p_noa, 11454 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 11455#endif /* ANDROID_P2P */ 11456#ifdef ANDROID 11457 .driver_cmd = wpa_driver_nl80211_driver_cmd, 11458#endif /* ANDROID */ 11459}; 11460