contrib/hostapd/src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2014, 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/qca-vendor.h"
  32 #include "common/ieee802_11_defs.h"
  33 #include "common/ieee802_11_common.h"
  34 #include "l2_packet/l2_packet.h"
  35 #include "netlink.h"
  36 #include "linux_ioctl.h"
  37 #include "radiotap.h"
  38 #include "radiotap_iter.h"
  39 #include "rfkill.h"
  40 #include "driver.h"
  41
  42 #ifndef SO_WIFI_STATUS
  43 # if defined(__sparc__)
  44 #  define SO_WIFI_STATUS        0x0025
  45 # elif defined(__parisc__)
  46 #  define SO_WIFI_STATUS        0x4022
  47 # else
  48 #  define SO_WIFI_STATUS        41
  49 # endif
  50
  51 # define SCM_WIFI_STATUS        SO_WIFI_STATUS
  52 #endif
  53
  54 #ifndef SO_EE_ORIGIN_TXSTATUS
  55 #define SO_EE_ORIGIN_TXSTATUS   4
  56 #endif
  57
  58 #ifndef PACKET_TX_TIMESTAMP
  59 #define PACKET_TX_TIMESTAMP     16
  60 #endif
  61
  62 #ifdef ANDROID
  63 #include "android_drv.h"
  64 #endif /* ANDROID */
  65 #ifdef CONFIG_LIBNL20
  66 /* libnl 2.0 compatibility code */
  67 #define nl_handle nl_sock
  68 #define nl80211_handle_alloc nl_socket_alloc_cb
  69 #define nl80211_handle_destroy nl_socket_free
  70 #else
  71 /*
  72  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  73  * but when you free a socket again it will mess up its bitmap and
  74  * and use the wrong number the next time it needs a socket ID.
  75  * Therefore, we wrap the handle alloc/destroy and add our own pid
  76  * accounting.
  77  */
  78 static uint32_t port_bitmap[32] = { 0 };
  79
  80 static struct nl_handle *nl80211_handle_alloc(void *cb)
  81 {
  82         struct nl_handle *handle;
  83         uint32_t pid = getpid() & 0x3FFFFF;
  84         int i;
  85
  86         handle = nl_handle_alloc_cb(cb);
  87
  88         for (i = 0; i < 1024; i++) {
  89                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  90                         continue;
  91                 port_bitmap[i / 32] |= 1 << (i % 32);
  92                 pid += i << 22;
  93                 break;
  94         }
  95
  96         nl_socket_set_local_port(handle, pid);
  97
  98         return handle;
  99 }
 100
 101 static void nl80211_handle_destroy(struct nl_handle *handle)
 102 {
 103         uint32_t port = nl_socket_get_local_port(handle);
 104
 105         port >>= 22;
 106         port_bitmap[port / 32] &= ~(1 << (port % 32));
 107
 108         nl_handle_destroy(handle);
 109 }
 110 #endif /* CONFIG_LIBNL20 */
 111
 112
 113 #ifdef ANDROID
 114 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
 115 static int android_nl_socket_set_nonblocking(struct nl_handle *handle)
 116 {
 117         return fcntl(nl_socket_get_fd(handle), F_SETFL, O_NONBLOCK);
 118 }
 119 #undef nl_socket_set_nonblocking
 120 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
 121 #endif /* ANDROID */
 122
 123
 124 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
 125 {
 126         struct nl_handle *handle;
 127
 128         handle = nl80211_handle_alloc(cb);
 129         if (handle == NULL) {
 130                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 131                            "callbacks (%s)", dbg);
 132                 return NULL;
 133         }
 134
 135         if (genl_connect(handle)) {
 136                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 137                            "netlink (%s)", dbg);
 138                 nl80211_handle_destroy(handle);
 139                 return NULL;
 140         }
 141
 142         return handle;
 143 }
 144
 145
 146 static void nl_destroy_handles(struct nl_handle **handle)
 147 {
 148         if (*handle == NULL)
 149                 return;
 150         nl80211_handle_destroy(*handle);
 151         *handle = NULL;
 152 }
 153
 154
 155 #if __WORDSIZE == 64
 156 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 157 #else
 158 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 159 #endif
 160
 161 static void nl80211_register_eloop_read(struct nl_handle **handle,
 162                                         eloop_sock_handler handler,
 163                                         void *eloop_data)
 164 {
 165         nl_socket_set_nonblocking(*handle);
 166         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 167                                  eloop_data, *handle);
 168         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 169 }
 170
 171
 172 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 173 {
 174         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 175         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 176         nl_destroy_handles(handle);
 177 }
 178
 179
 180 #ifndef IFF_LOWER_UP
 181 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
 182 #endif
 183 #ifndef IFF_DORMANT
 184 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
 185 #endif
 186
 187 #ifndef IF_OPER_DORMANT
 188 #define IF_OPER_DORMANT 5
 189 #endif
 190 #ifndef IF_OPER_UP
 191 #define IF_OPER_UP 6
 192 #endif
 193
 194 struct nl80211_global {
 195         struct dl_list interfaces;
 196         int if_add_ifindex;
 197         u64 if_add_wdevid;
 198         int if_add_wdevid_set;
 199         struct netlink_data *netlink;
 200         struct nl_cb *nl_cb;
 201         struct nl_handle *nl;
 202         int nl80211_id;
 203         int ioctl_sock; /* socket for ioctl() use */
 204
 205         struct nl_handle *nl_event;
 206 };
 207
 208 struct nl80211_wiphy_data {
 209         struct dl_list list;
 210         struct dl_list bsss;
 211         struct dl_list drvs;
 212
 213         struct nl_handle *nl_beacons;
 214         struct nl_cb *nl_cb;
 215
 216         int wiphy_idx;
 217 };
 218
 219 static void nl80211_global_deinit(void *priv);
 220
 221 struct i802_bss {
 222         struct wpa_driver_nl80211_data *drv;
 223         struct i802_bss *next;
 224         int ifindex;
 225         u64 wdev_id;
 226         char ifname[IFNAMSIZ + 1];
 227         char brname[IFNAMSIZ];
 228         unsigned int beacon_set:1;
 229         unsigned int added_if_into_bridge:1;
 230         unsigned int added_bridge:1;
 231         unsigned int in_deinit:1;
 232         unsigned int wdev_id_set:1;
 233         unsigned int added_if:1;
 234
 235         u8 addr[ETH_ALEN];
 236
 237         int freq;
 238         int if_dynamic;
 239
 240         void *ctx;
 241         struct nl_handle *nl_preq, *nl_mgmt;
 242         struct nl_cb *nl_cb;
 243
 244         struct nl80211_wiphy_data *wiphy_data;
 245         struct dl_list wiphy_list;
 246 };
 247
 248 struct wpa_driver_nl80211_data {
 249         struct nl80211_global *global;
 250         struct dl_list list;
 251         struct dl_list wiphy_list;
 252         char phyname[32];
 253         void *ctx;
 254         int ifindex;
 255         int if_removed;
 256         int if_disabled;
 257         int ignore_if_down_event;
 258         struct rfkill_data *rfkill;
 259         struct wpa_driver_capa capa;
 260         u8 *extended_capa, *extended_capa_mask;
 261         unsigned int extended_capa_len;
 262         int has_capability;
 263
 264         int operstate;
 265
 266         int scan_complete_events;
 267         enum scan_states {
 268                 NO_SCAN, SCAN_REQUESTED, SCAN_STARTED, SCAN_COMPLETED,
 269                 SCAN_ABORTED, SCHED_SCAN_STARTED, SCHED_SCAN_STOPPED,
 270                 SCHED_SCAN_RESULTS
 271         } scan_state;
 272
 273         struct nl_cb *nl_cb;
 274
 275         u8 auth_bssid[ETH_ALEN];
 276         u8 auth_attempt_bssid[ETH_ALEN];
 277         u8 bssid[ETH_ALEN];
 278         u8 prev_bssid[ETH_ALEN];
 279         int associated;
 280         u8 ssid[32];
 281         size_t ssid_len;
 282         enum nl80211_iftype nlmode;
 283         enum nl80211_iftype ap_scan_as_station;
 284         unsigned int assoc_freq;
 285
 286         int monitor_sock;
 287         int monitor_ifidx;
 288         int monitor_refcount;
 289
 290         unsigned int disabled_11b_rates:1;
 291         unsigned int pending_remain_on_chan:1;
 292         unsigned int in_interface_list:1;
 293         unsigned int device_ap_sme:1;
 294         unsigned int poll_command_supported:1;
 295         unsigned int data_tx_status:1;
 296         unsigned int scan_for_auth:1;
 297         unsigned int retry_auth:1;
 298         unsigned int use_monitor:1;
 299         unsigned int ignore_next_local_disconnect:1;
 300         unsigned int allow_p2p_device:1;
 301         unsigned int hostapd:1;
 302         unsigned int start_mode_ap:1;
 303         unsigned int start_iface_up: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
 339 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 340 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 341                                             void *timeout_ctx);
 342 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
 343                                        enum nl80211_iftype nlmode);
 344 static int
 345 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 346                                    const u8 *set_addr, int first);
 347 static 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);
 350 static void nl80211_remove_monitor_interface(
 351         struct wpa_driver_nl80211_data *drv);
 352 static 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);
 356 static int nl80211_register_frame(struct i802_bss *bss,
 357                                   struct nl_handle *hl_handle,
 358                                   u16 type, const u8 *match, size_t match_len);
 359 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 360                                                int report);
 361 #ifdef ANDROID
 362 static int android_pno_start(struct i802_bss *bss,
 363                              struct wpa_driver_scan_params *params);
 364 static int android_pno_stop(struct i802_bss *bss);
 365 extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf,
 366                                          size_t buf_len);
 367 #endif /* ANDROID */
 368 #ifdef ANDROID_P2P
 369 int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration);
 370 int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len);
 371 int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow);
 372 int 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
 377 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 378 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 379 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 380 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
 381                                         enum wpa_driver_if_type type,
 382                                         const char *ifname);
 383
 384 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
 385                                        struct hostapd_freq_params *freq);
 386 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 387                                      int ifindex, int disabled);
 388
 389 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
 390 static int wpa_driver_nl80211_authenticate_retry(
 391         struct wpa_driver_nl80211_data *drv);
 392
 393 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 394
 395
 396 static 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         C2S(NL80211_CMD_GET_COALESCE)
 501         C2S(NL80211_CMD_SET_COALESCE)
 502         C2S(NL80211_CMD_CHANNEL_SWITCH)
 503         C2S(NL80211_CMD_VENDOR)
 504         C2S(NL80211_CMD_SET_QOS_MAP)
 505         default:
 506                 return "NL80211_CMD_UNKNOWN";
 507         }
 508 #undef C2S
 509 }
 510
 511
 512 /* Converts nl80211_chan_width to a common format */
 513 static enum chan_width convert2width(int width)
 514 {
 515         switch (width) {
 516         case NL80211_CHAN_WIDTH_20_NOHT:
 517                 return CHAN_WIDTH_20_NOHT;
 518         case NL80211_CHAN_WIDTH_20:
 519                 return CHAN_WIDTH_20;
 520         case NL80211_CHAN_WIDTH_40:
 521                 return CHAN_WIDTH_40;
 522         case NL80211_CHAN_WIDTH_80:
 523                 return CHAN_WIDTH_80;
 524         case NL80211_CHAN_WIDTH_80P80:
 525                 return CHAN_WIDTH_80P80;
 526         case NL80211_CHAN_WIDTH_160:
 527                 return CHAN_WIDTH_160;
 528         }
 529         return CHAN_WIDTH_UNKNOWN;
 530 }
 531
 532
 533 static int is_ap_interface(enum nl80211_iftype nlmode)
 534 {
 535         return (nlmode == NL80211_IFTYPE_AP ||
 536                 nlmode == NL80211_IFTYPE_P2P_GO);
 537 }
 538
 539
 540 static int is_sta_interface(enum nl80211_iftype nlmode)
 541 {
 542         return (nlmode == NL80211_IFTYPE_STATION ||
 543                 nlmode == NL80211_IFTYPE_P2P_CLIENT);
 544 }
 545
 546
 547 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 548 {
 549         return (nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 550                 nlmode == NL80211_IFTYPE_P2P_GO);
 551 }
 552
 553
 554 static void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 555 {
 556         if (drv->associated)
 557                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 558         drv->associated = 0;
 559         os_memset(drv->bssid, 0, ETH_ALEN);
 560 }
 561
 562
 563 struct nl80211_bss_info_arg {
 564         struct wpa_driver_nl80211_data *drv;
 565         struct wpa_scan_results *res;
 566         unsigned int assoc_freq;
 567         u8 assoc_bssid[ETH_ALEN];
 568 };
 569
 570 static int bss_info_handler(struct nl_msg *msg, void *arg);
 571
 572
 573 /* nl80211 code */
 574 static int ack_handler(struct nl_msg *msg, void *arg)
 575 {
 576         int *err = arg;
 577         *err = 0;
 578         return NL_STOP;
 579 }
 580
 581 static int finish_handler(struct nl_msg *msg, void *arg)
 582 {
 583         int *ret = arg;
 584         *ret = 0;
 585         return NL_SKIP;
 586 }
 587
 588 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 589                          void *arg)
 590 {
 591         int *ret = arg;
 592         *ret = err->error;
 593         return NL_SKIP;
 594 }
 595
 596
 597 static int no_seq_check(struct nl_msg *msg, void *arg)
 598 {
 599         return NL_OK;
 600 }
 601
 602
 603 static int send_and_recv(struct nl80211_global *global,
 604                          struct nl_handle *nl_handle, struct nl_msg *msg,
 605                          int (*valid_handler)(struct nl_msg *, void *),
 606                          void *valid_data)
 607 {
 608         struct nl_cb *cb;
 609         int err = -ENOMEM;
 610
 611         cb = nl_cb_clone(global->nl_cb);
 612         if (!cb)
 613                 goto out;
 614
 615         err = nl_send_auto_complete(nl_handle, msg);
 616         if (err < 0)
 617                 goto out;
 618
 619         err = 1;
 620
 621         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 622         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 623         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 624
 625         if (valid_handler)
 626                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 627                           valid_handler, valid_data);
 628
 629         while (err > 0) {
 630                 int res = nl_recvmsgs(nl_handle, cb);
 631                 if (res) {
 632                         wpa_printf(MSG_INFO,
 633                                    "nl80211: %s->nl_recvmsgs failed: %d",
 634                                    __func__, res);
 635                 }
 636         }
 637  out:
 638         nl_cb_put(cb);
 639         nlmsg_free(msg);
 640         return err;
 641 }
 642
 643
 644 static int send_and_recv_msgs_global(struct nl80211_global *global,
 645                                      struct nl_msg *msg,
 646                                      int (*valid_handler)(struct nl_msg *, void *),
 647                                      void *valid_data)
 648 {
 649         return send_and_recv(global, global->nl, msg, valid_handler,
 650                              valid_data);
 651 }
 652
 653
 654 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 655                               struct nl_msg *msg,
 656                               int (*valid_handler)(struct nl_msg *, void *),
 657                               void *valid_data)
 658 {
 659         return send_and_recv(drv->global, drv->global->nl, msg,
 660                              valid_handler, valid_data);
 661 }
 662
 663
 664 struct family_data {
 665         const char *group;
 666         int id;
 667 };
 668
 669
 670 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 671 {
 672         if (bss->wdev_id_set)
 673                 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 674         else
 675                 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 676         return 0;
 677
 678 nla_put_failure:
 679         return -1;
 680 }
 681
 682
 683 static int family_handler(struct nl_msg *msg, void *arg)
 684 {
 685         struct family_data *res = arg;
 686         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 687         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 688         struct nlattr *mcgrp;
 689         int i;
 690
 691         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 692                   genlmsg_attrlen(gnlh, 0), NULL);
 693         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 694                 return NL_SKIP;
 695
 696         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 697                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 698                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 699                           nla_len(mcgrp), NULL);
 700                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 701                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 702                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 703                                res->group,
 704                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 705                         continue;
 706                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 707                 break;
 708         };
 709
 710         return NL_SKIP;
 711 }
 712
 713
 714 static int nl_get_multicast_id(struct nl80211_global *global,
 715                                const char *family, const char *group)
 716 {
 717         struct nl_msg *msg;
 718         int ret = -1;
 719         struct family_data res = { group, -ENOENT };
 720
 721         msg = nlmsg_alloc();
 722         if (!msg)
 723                 return -ENOMEM;
 724         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 725                     0, 0, CTRL_CMD_GETFAMILY, 0);
 726         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 727
 728         ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
 729         msg = NULL;
 730         if (ret == 0)
 731                 ret = res.id;
 732
 733 nla_put_failure:
 734         nlmsg_free(msg);
 735         return ret;
 736 }
 737
 738
 739 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 740                           struct nl_msg *msg, int flags, uint8_t cmd)
 741 {
 742         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 743                            0, flags, cmd, 0);
 744 }
 745
 746
 747 struct wiphy_idx_data {
 748         int wiphy_idx;
 749         enum nl80211_iftype nlmode;
 750         u8 *macaddr;
 751 };
 752
 753
 754 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 755 {
 756         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 757         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 758         struct wiphy_idx_data *info = arg;
 759
 760         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 761                   genlmsg_attrlen(gnlh, 0), NULL);
 762
 763         if (tb[NL80211_ATTR_WIPHY])
 764                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 765
 766         if (tb[NL80211_ATTR_IFTYPE])
 767                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 768
 769         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 770                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 771                           ETH_ALEN);
 772
 773         return NL_SKIP;
 774 }
 775
 776
 777 static int nl80211_get_wiphy_index(struct i802_bss *bss)
 778 {
 779         struct nl_msg *msg;
 780         struct wiphy_idx_data data = {
 781                 .wiphy_idx = -1,
 782                 .macaddr = NULL,
 783         };
 784
 785         msg = nlmsg_alloc();
 786         if (!msg)
 787                 return NL80211_IFTYPE_UNSPECIFIED;
 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.wiphy_idx;
 796         msg = NULL;
 797 nla_put_failure:
 798         nlmsg_free(msg);
 799         return -1;
 800 }
 801
 802
 803 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 804 {
 805         struct nl_msg *msg;
 806         struct wiphy_idx_data data = {
 807                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 808                 .macaddr = NULL,
 809         };
 810
 811         msg = nlmsg_alloc();
 812         if (!msg)
 813                 return -1;
 814
 815         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
 816
 817         if (nl80211_set_iface_id(msg, bss) < 0)
 818                 goto nla_put_failure;
 819
 820         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 821                 return data.nlmode;
 822         msg = NULL;
 823 nla_put_failure:
 824         nlmsg_free(msg);
 825         return NL80211_IFTYPE_UNSPECIFIED;
 826 }
 827
 828
 829 static int nl80211_get_macaddr(struct i802_bss *bss)
 830 {
 831         struct nl_msg *msg;
 832         struct wiphy_idx_data data = {
 833                 .macaddr = bss->addr,
 834         };
 835
 836         msg = nlmsg_alloc();
 837         if (!msg)
 838                 return NL80211_IFTYPE_UNSPECIFIED;
 839
 840         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
 841         if (nl80211_set_iface_id(msg, bss) < 0)
 842                 goto nla_put_failure;
 843
 844         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 845
 846 nla_put_failure:
 847         nlmsg_free(msg);
 848         return NL80211_IFTYPE_UNSPECIFIED;
 849 }
 850
 851
 852 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 853                                     struct nl80211_wiphy_data *w)
 854 {
 855         struct nl_msg *msg;
 856         int ret = -1;
 857
 858         msg = nlmsg_alloc();
 859         if (!msg)
 860                 return -1;
 861
 862         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS);
 863
 864         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx);
 865
 866         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 867         msg = NULL;
 868         if (ret) {
 869                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 870                            "failed: ret=%d (%s)",
 871                            ret, strerror(-ret));
 872                 goto nla_put_failure;
 873         }
 874         ret = 0;
 875 nla_put_failure:
 876         nlmsg_free(msg);
 877         return ret;
 878 }
 879
 880
 881 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 882 {
 883         struct nl80211_wiphy_data *w = eloop_ctx;
 884         int res;
 885
 886         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 887
 888         res = nl_recvmsgs(handle, w->nl_cb);
 889         if (res) {
 890                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 891                            __func__, res);
 892         }
 893 }
 894
 895
 896 static int process_beacon_event(struct nl_msg *msg, void *arg)
 897 {
 898         struct nl80211_wiphy_data *w = arg;
 899         struct wpa_driver_nl80211_data *drv;
 900         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 901         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 902         union wpa_event_data event;
 903
 904         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 905                   genlmsg_attrlen(gnlh, 0), NULL);
 906
 907         if (gnlh->cmd != NL80211_CMD_FRAME) {
 908                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 909                            gnlh->cmd);
 910                 return NL_SKIP;
 911         }
 912
 913         if (!tb[NL80211_ATTR_FRAME])
 914                 return NL_SKIP;
 915
 916         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 917                          wiphy_list) {
 918                 os_memset(&event, 0, sizeof(event));
 919                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 920                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 921                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 922         }
 923
 924         return NL_SKIP;
 925 }
 926
 927
 928 static struct nl80211_wiphy_data *
 929 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 930 {
 931         static DEFINE_DL_LIST(nl80211_wiphys);
 932         struct nl80211_wiphy_data *w;
 933         int wiphy_idx, found = 0;
 934         struct i802_bss *tmp_bss;
 935
 936         if (bss->wiphy_data != NULL)
 937                 return bss->wiphy_data;
 938
 939         wiphy_idx = nl80211_get_wiphy_index(bss);
 940
 941         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 942                 if (w->wiphy_idx == wiphy_idx)
 943                         goto add;
 944         }
 945
 946         /* alloc new one */
 947         w = os_zalloc(sizeof(*w));
 948         if (w == NULL)
 949                 return NULL;
 950         w->wiphy_idx = wiphy_idx;
 951         dl_list_init(&w->bsss);
 952         dl_list_init(&w->drvs);
 953
 954         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 955         if (!w->nl_cb) {
 956                 os_free(w);
 957                 return NULL;
 958         }
 959         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 960         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 961                   w);
 962
 963         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 964                                          "wiphy beacons");
 965         if (w->nl_beacons == NULL) {
 966                 os_free(w);
 967                 return NULL;
 968         }
 969
 970         if (nl80211_register_beacons(bss->drv, w)) {
 971                 nl_destroy_handles(&w->nl_beacons);
 972                 os_free(w);
 973                 return NULL;
 974         }
 975
 976         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 977
 978         dl_list_add(&nl80211_wiphys, &w->list);
 979
 980 add:
 981         /* drv entry for this bss already there? */
 982         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 983                 if (tmp_bss->drv == bss->drv) {
 984                         found = 1;
 985                         break;
 986                 }
 987         }
 988         /* if not add it */
 989         if (!found)
 990                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 991
 992         dl_list_add(&w->bsss, &bss->wiphy_list);
 993         bss->wiphy_data = w;
 994         return w;
 995 }
 996
 997
 998 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 999 {
1000         struct nl80211_wiphy_data *w = bss->wiphy_data;
1001         struct i802_bss *tmp_bss;
1002         int found = 0;
1003
1004         if (w == NULL)
1005                 return;
1006         bss->wiphy_data = NULL;
1007         dl_list_del(&bss->wiphy_list);
1008
1009         /* still any for this drv present? */
1010         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
1011                 if (tmp_bss->drv == bss->drv) {
1012                         found = 1;
1013                         break;
1014                 }
1015         }
1016         /* if not remove it */
1017         if (!found)
1018                 dl_list_del(&bss->drv->wiphy_list);
1019
1020         if (!dl_list_empty(&w->bsss))
1021                 return;
1022
1023         nl80211_destroy_eloop_handle(&w->nl_beacons);
1024
1025         nl_cb_put(w->nl_cb);
1026         dl_list_del(&w->list);
1027         os_free(w);
1028 }
1029
1030
1031 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
1032 {
1033         struct i802_bss *bss = priv;
1034         struct wpa_driver_nl80211_data *drv = bss->drv;
1035         if (!drv->associated)
1036                 return -1;
1037         os_memcpy(bssid, drv->bssid, ETH_ALEN);
1038         return 0;
1039 }
1040
1041
1042 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
1043 {
1044         struct i802_bss *bss = priv;
1045         struct wpa_driver_nl80211_data *drv = bss->drv;
1046         if (!drv->associated)
1047                 return -1;
1048         os_memcpy(ssid, drv->ssid, drv->ssid_len);
1049         return drv->ssid_len;
1050 }
1051
1052
1053 static void wpa_driver_nl80211_event_newlink(
1054         struct wpa_driver_nl80211_data *drv, char *ifname)
1055 {
1056         union wpa_event_data event;
1057
1058         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
1059                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
1060                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
1061                                    drv->first_bss->ifname);
1062                         return;
1063                 }
1064                 if (!drv->if_removed)
1065                         return;
1066                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
1067                            drv->first_bss->ifname);
1068                 drv->if_removed = 0;
1069         }
1070
1071         os_memset(&event, 0, sizeof(event));
1072         os_strlcpy(event.interface_status.ifname, ifname,
1073                    sizeof(event.interface_status.ifname));
1074         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
1075         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
1076 }
1077
1078
1079 static void wpa_driver_nl80211_event_dellink(
1080         struct wpa_driver_nl80211_data *drv, char *ifname)
1081 {
1082         union wpa_event_data event;
1083
1084         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
1085                 if (drv->if_removed) {
1086                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
1087                                    ifname);
1088                         return;
1089                 }
1090                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
1091                            ifname);
1092                 drv->if_removed = 1;
1093         } else {
1094                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
1095                            ifname);
1096         }
1097
1098         os_memset(&event, 0, sizeof(event));
1099         os_strlcpy(event.interface_status.ifname, ifname,
1100                    sizeof(event.interface_status.ifname));
1101         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1102         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
1103 }
1104
1105
1106 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
1107                                          u8 *buf, size_t len)
1108 {
1109         int attrlen, rta_len;
1110         struct rtattr *attr;
1111
1112         attrlen = len;
1113         attr = (struct rtattr *) buf;
1114
1115         rta_len = RTA_ALIGN(sizeof(struct rtattr));
1116         while (RTA_OK(attr, attrlen)) {
1117                 if (attr->rta_type == IFLA_IFNAME) {
1118                         if (os_strcmp(((char *) attr) + rta_len,
1119                                       drv->first_bss->ifname) == 0)
1120                                 return 1;
1121                         else
1122                                 break;
1123                 }
1124                 attr = RTA_NEXT(attr, attrlen);
1125         }
1126
1127         return 0;
1128 }
1129
1130
1131 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
1132                                           int ifindex, u8 *buf, size_t len)
1133 {
1134         if (drv->ifindex == ifindex)
1135                 return 1;
1136
1137         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
1138                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
1139                            "interface");
1140                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0);
1141                 return 1;
1142         }
1143
1144         return 0;
1145 }
1146
1147
1148 static struct wpa_driver_nl80211_data *
1149 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
1150 {
1151         struct wpa_driver_nl80211_data *drv;
1152         dl_list_for_each(drv, &global->interfaces,
1153                          struct wpa_driver_nl80211_data, list) {
1154                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
1155                     have_ifidx(drv, idx))
1156                         return drv;
1157         }
1158         return NULL;
1159 }
1160
1161
1162 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
1163                                                  struct ifinfomsg *ifi,
1164                                                  u8 *buf, size_t len)
1165 {
1166         struct nl80211_global *global = ctx;
1167         struct wpa_driver_nl80211_data *drv;
1168         int attrlen;
1169         struct rtattr *attr;
1170         u32 brid = 0;
1171         char namebuf[IFNAMSIZ];
1172         char ifname[IFNAMSIZ + 1];
1173         char extra[100], *pos, *end;
1174
1175         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1176         if (!drv) {
1177                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
1178                            ifi->ifi_index);
1179                 return;
1180         }
1181
1182         extra[0] = '\0';
1183         pos = extra;
1184         end = pos + sizeof(extra);
1185         ifname[0] = '\0';
1186
1187         attrlen = len;
1188         attr = (struct rtattr *) buf;
1189         while (RTA_OK(attr, attrlen)) {
1190                 switch (attr->rta_type) {
1191                 case IFLA_IFNAME:
1192                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1193                                 break;
1194                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1195                         ifname[RTA_PAYLOAD(attr)] = '\0';
1196                         break;
1197                 case IFLA_MASTER:
1198                         brid = nla_get_u32((struct nlattr *) attr);
1199                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1200                         break;
1201                 case IFLA_WIRELESS:
1202                         pos += os_snprintf(pos, end - pos, " wext");
1203                         break;
1204                 case IFLA_OPERSTATE:
1205                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1206                                            nla_get_u32((struct nlattr *) attr));
1207                         break;
1208                 case IFLA_LINKMODE:
1209                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1210                                            nla_get_u32((struct nlattr *) attr));
1211                         break;
1212                 }
1213                 attr = RTA_NEXT(attr, attrlen);
1214         }
1215         extra[sizeof(extra) - 1] = '\0';
1216
1217         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_flags=0x%x (%s%s%s%s)",
1218                    ifi->ifi_index, ifname, extra, ifi->ifi_flags,
1219                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1220                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1221                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1222                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1223
1224         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
1225                 if (if_indextoname(ifi->ifi_index, namebuf) &&
1226                     linux_iface_up(drv->global->ioctl_sock,
1227                                    drv->first_bss->ifname) > 0) {
1228                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
1229                                    "event since interface %s is up", namebuf);
1230                         return;
1231                 }
1232                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
1233                 if (drv->ignore_if_down_event) {
1234                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
1235                                    "event generated by mode change");
1236                         drv->ignore_if_down_event = 0;
1237                 } else {
1238                         drv->if_disabled = 1;
1239                         wpa_supplicant_event(drv->ctx,
1240                                              EVENT_INTERFACE_DISABLED, NULL);
1241                 }
1242         }
1243
1244         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
1245                 if (if_indextoname(ifi->ifi_index, namebuf) &&
1246                     linux_iface_up(drv->global->ioctl_sock,
1247                                    drv->first_bss->ifname) == 0) {
1248                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1249                                    "event since interface %s is down",
1250                                    namebuf);
1251                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
1252                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1253                                    "event since interface %s does not exist",
1254                                    drv->first_bss->ifname);
1255                 } else if (drv->if_removed) {
1256                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1257                                    "event since interface %s is marked "
1258                                    "removed", drv->first_bss->ifname);
1259                 } else {
1260                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1261                         drv->if_disabled = 0;
1262                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1263                                              NULL);
1264                 }
1265         }
1266
1267         /*
1268          * Some drivers send the association event before the operup event--in
1269          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1270          * fails. This will hit us when wpa_supplicant does not need to do
1271          * IEEE 802.1X authentication
1272          */
1273         if (drv->operstate == 1 &&
1274             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1275             !(ifi->ifi_flags & IFF_RUNNING)) {
1276                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1277                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1278                                        -1, IF_OPER_UP);
1279         }
1280
1281         if (ifname[0])
1282                 wpa_driver_nl80211_event_newlink(drv, ifname);
1283
1284         if (ifi->ifi_family == AF_BRIDGE && brid) {
1285                 /* device has been added to bridge */
1286                 if_indextoname(brid, namebuf);
1287                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1288                            brid, namebuf);
1289                 add_ifidx(drv, brid);
1290         }
1291 }
1292
1293
1294 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1295                                                  struct ifinfomsg *ifi,
1296                                                  u8 *buf, size_t len)
1297 {
1298         struct nl80211_global *global = ctx;
1299         struct wpa_driver_nl80211_data *drv;
1300         int attrlen;
1301         struct rtattr *attr;
1302         u32 brid = 0;
1303         char ifname[IFNAMSIZ + 1];
1304
1305         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1306         if (!drv) {
1307                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1308                            ifi->ifi_index);
1309                 return;
1310         }
1311
1312         ifname[0] = '\0';
1313
1314         attrlen = len;
1315         attr = (struct rtattr *) buf;
1316         while (RTA_OK(attr, attrlen)) {
1317                 switch (attr->rta_type) {
1318                 case IFLA_IFNAME:
1319                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1320                                 break;
1321                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1322                         ifname[RTA_PAYLOAD(attr)] = '\0';
1323                         break;
1324                 case IFLA_MASTER:
1325                         brid = nla_get_u32((struct nlattr *) attr);
1326                         break;
1327                 }
1328                 attr = RTA_NEXT(attr, attrlen);
1329         }
1330
1331         if (ifname[0])
1332                 wpa_driver_nl80211_event_dellink(drv, ifname);
1333
1334         if (ifi->ifi_family == AF_BRIDGE && brid) {
1335                 /* device has been removed from bridge */
1336                 char namebuf[IFNAMSIZ];
1337                 if_indextoname(brid, namebuf);
1338                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1339                            "%s", brid, namebuf);
1340                 del_ifidx(drv, brid);
1341         }
1342 }
1343
1344
1345 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
1346                             const u8 *frame, size_t len)
1347 {
1348         const struct ieee80211_mgmt *mgmt;
1349         union wpa_event_data event;
1350
1351         wpa_printf(MSG_DEBUG, "nl80211: Authenticate event");
1352         mgmt = (const struct ieee80211_mgmt *) frame;
1353         if (len < 24 + sizeof(mgmt->u.auth)) {
1354                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1355                            "frame");
1356                 return;
1357         }
1358
1359         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
1360         os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
1361         os_memset(&event, 0, sizeof(event));
1362         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
1363         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
1364         event.auth.auth_transaction =
1365                 le_to_host16(mgmt->u.auth.auth_transaction);
1366         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
1367         if (len > 24 + sizeof(mgmt->u.auth)) {
1368                 event.auth.ies = mgmt->u.auth.variable;
1369                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
1370         }
1371
1372         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
1373 }
1374
1375
1376 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1377 {
1378         struct nl_msg *msg;
1379         int ret;
1380         struct nl80211_bss_info_arg arg;
1381
1382         os_memset(&arg, 0, sizeof(arg));
1383         msg = nlmsg_alloc();
1384         if (!msg)
1385                 goto nla_put_failure;
1386
1387         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1388         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1389
1390         arg.drv = drv;
1391         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1392         msg = NULL;
1393         if (ret == 0) {
1394                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1395                            "associated BSS from scan results: %u MHz",
1396                            arg.assoc_freq);
1397                 if (arg.assoc_freq)
1398                         drv->assoc_freq = arg.assoc_freq;
1399                 return drv->assoc_freq;
1400         }
1401         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1402                    "(%s)", ret, strerror(-ret));
1403 nla_put_failure:
1404         nlmsg_free(msg);
1405         return drv->assoc_freq;
1406 }
1407
1408
1409 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
1410                             const u8 *frame, size_t len)
1411 {
1412         const struct ieee80211_mgmt *mgmt;
1413         union wpa_event_data event;
1414         u16 status;
1415
1416         wpa_printf(MSG_DEBUG, "nl80211: Associate event");
1417         mgmt = (const struct ieee80211_mgmt *) frame;
1418         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
1419                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1420                            "frame");
1421                 return;
1422         }
1423
1424         status = le_to_host16(mgmt->u.assoc_resp.status_code);
1425         if (status != WLAN_STATUS_SUCCESS) {
1426                 os_memset(&event, 0, sizeof(event));
1427                 event.assoc_reject.bssid = mgmt->bssid;
1428                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1429                         event.assoc_reject.resp_ies =
1430                                 (u8 *) mgmt->u.assoc_resp.variable;
1431                         event.assoc_reject.resp_ies_len =
1432                                 len - 24 - sizeof(mgmt->u.assoc_resp);
1433                 }
1434                 event.assoc_reject.status_code = status;
1435
1436                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1437                 return;
1438         }
1439
1440         drv->associated = 1;
1441         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
1442         os_memcpy(drv->prev_bssid, mgmt->sa, ETH_ALEN);
1443
1444         os_memset(&event, 0, sizeof(event));
1445         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1446                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
1447                 event.assoc_info.resp_ies_len =
1448                         len - 24 - sizeof(mgmt->u.assoc_resp);
1449         }
1450
1451         event.assoc_info.freq = drv->assoc_freq;
1452
1453         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1454 }
1455
1456
1457 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
1458                                enum nl80211_commands cmd, struct nlattr *status,
1459                                struct nlattr *addr, struct nlattr *req_ie,
1460                                struct nlattr *resp_ie)
1461 {
1462         union wpa_event_data event;
1463
1464         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1465                 /*
1466                  * Avoid reporting two association events that would confuse
1467                  * the core code.
1468                  */
1469                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
1470                            "when using userspace SME", cmd);
1471                 return;
1472         }
1473
1474         if (cmd == NL80211_CMD_CONNECT)
1475                 wpa_printf(MSG_DEBUG, "nl80211: Connect event");
1476         else if (cmd == NL80211_CMD_ROAM)
1477                 wpa_printf(MSG_DEBUG, "nl80211: Roam event");
1478
1479         os_memset(&event, 0, sizeof(event));
1480         if (cmd == NL80211_CMD_CONNECT &&
1481             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
1482                 if (addr)
1483                         event.assoc_reject.bssid = nla_data(addr);
1484                 if (resp_ie) {
1485                         event.assoc_reject.resp_ies = nla_data(resp_ie);
1486                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
1487                 }
1488                 event.assoc_reject.status_code = nla_get_u16(status);
1489                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1490                 return;
1491         }
1492
1493         drv->associated = 1;
1494         if (addr) {
1495                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
1496                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
1497         }
1498
1499         if (req_ie) {
1500                 event.assoc_info.req_ies = nla_data(req_ie);
1501                 event.assoc_info.req_ies_len = nla_len(req_ie);
1502         }
1503         if (resp_ie) {
1504                 event.assoc_info.resp_ies = nla_data(resp_ie);
1505                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
1506         }
1507
1508         event.assoc_info.freq = nl80211_get_assoc_freq(drv);
1509
1510         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1511 }
1512
1513
1514 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
1515                                   struct nlattr *reason, struct nlattr *addr,
1516                                   struct nlattr *by_ap)
1517 {
1518         union wpa_event_data data;
1519         unsigned int locally_generated = by_ap == NULL;
1520
1521         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1522                 /*
1523                  * Avoid reporting two disassociation events that could
1524                  * confuse the core code.
1525                  */
1526                 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1527                            "event when using userspace SME");
1528                 return;
1529         }
1530
1531         if (drv->ignore_next_local_disconnect) {
1532                 drv->ignore_next_local_disconnect = 0;
1533                 if (locally_generated) {
1534                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1535                                    "event triggered during reassociation");
1536                         return;
1537                 }
1538                 wpa_printf(MSG_WARNING, "nl80211: Was expecting local "
1539                            "disconnect but got another disconnect "
1540                            "event first");
1541         }
1542
1543         wpa_printf(MSG_DEBUG, "nl80211: Disconnect event");
1544         nl80211_mark_disconnected(drv);
1545         os_memset(&data, 0, sizeof(data));
1546         if (reason)
1547                 data.deauth_info.reason_code = nla_get_u16(reason);
1548         data.deauth_info.locally_generated = by_ap == NULL;
1549         wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data);
1550 }
1551
1552
1553 static int calculate_chan_offset(int width, int freq, int cf1, int cf2)
1554 {
1555         int freq1 = 0;
1556
1557         switch (convert2width(width)) {
1558         case CHAN_WIDTH_20_NOHT:
1559         case CHAN_WIDTH_20:
1560                 return 0;
1561         case CHAN_WIDTH_40:
1562                 freq1 = cf1 - 10;
1563                 break;
1564         case CHAN_WIDTH_80:
1565                 freq1 = cf1 - 30;
1566                 break;
1567         case CHAN_WIDTH_160:
1568                 freq1 = cf1 - 70;
1569                 break;
1570         case CHAN_WIDTH_UNKNOWN:
1571         case CHAN_WIDTH_80P80:
1572                 /* FIXME: implement this */
1573                 return 0;
1574         }
1575
1576         return (abs(freq - freq1) / 20) % 2 == 0 ? 1 : -1;
1577 }
1578
1579
1580 static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv,
1581                                  struct nlattr *ifindex, struct nlattr *freq,
1582                                  struct nlattr *type, struct nlattr *bw,
1583                                  struct nlattr *cf1, struct nlattr *cf2)
1584 {
1585         struct i802_bss *bss;
1586         union wpa_event_data data;
1587         int ht_enabled = 1;
1588         int chan_offset = 0;
1589         int ifidx;
1590
1591         wpa_printf(MSG_DEBUG, "nl80211: Channel switch event");
1592
1593         if (!freq)
1594                 return;
1595
1596         ifidx = nla_get_u32(ifindex);
1597         for (bss = drv->first_bss; bss; bss = bss->next)
1598                 if (bss->ifindex == ifidx)
1599                         break;
1600
1601         if (bss == NULL) {
1602                 wpa_printf(MSG_WARNING, "nl80211: Unknown ifindex (%d) for channel switch, ignoring",
1603                            ifidx);
1604                 return;
1605         }
1606
1607         if (type) {
1608                 switch (nla_get_u32(type)) {
1609                 case NL80211_CHAN_NO_HT:
1610                         ht_enabled = 0;
1611                         break;
1612                 case NL80211_CHAN_HT20:
1613                         break;
1614                 case NL80211_CHAN_HT40PLUS:
1615                         chan_offset = 1;
1616                         break;
1617                 case NL80211_CHAN_HT40MINUS:
1618                         chan_offset = -1;
1619                         break;
1620                 }
1621         } else if (bw && cf1) {
1622                 /* This can happen for example with VHT80 ch switch */
1623                 chan_offset = calculate_chan_offset(nla_get_u32(bw),
1624                                                     nla_get_u32(freq),
1625                                                     nla_get_u32(cf1),
1626                                                     cf2 ? nla_get_u32(cf2) : 0);
1627         } else {
1628                 wpa_printf(MSG_WARNING, "nl80211: Unknown secondary channel information - following channel definition calculations may fail");
1629         }
1630
1631         os_memset(&data, 0, sizeof(data));
1632         data.ch_switch.freq = nla_get_u32(freq);
1633         data.ch_switch.ht_enabled = ht_enabled;
1634         data.ch_switch.ch_offset = chan_offset;
1635         if (bw)
1636                 data.ch_switch.ch_width = convert2width(nla_get_u32(bw));
1637         if (cf1)
1638                 data.ch_switch.cf1 = nla_get_u32(cf1);
1639         if (cf2)
1640                 data.ch_switch.cf2 = nla_get_u32(cf2);
1641
1642         bss->freq = data.ch_switch.freq;
1643
1644         wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data);
1645 }
1646
1647
1648 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
1649                                enum nl80211_commands cmd, struct nlattr *addr)
1650 {
1651         union wpa_event_data event;
1652         enum wpa_event_type ev;
1653
1654         if (nla_len(addr) != ETH_ALEN)
1655                 return;
1656
1657         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
1658                    cmd, MAC2STR((u8 *) nla_data(addr)));
1659
1660         if (cmd == NL80211_CMD_AUTHENTICATE)
1661                 ev = EVENT_AUTH_TIMED_OUT;
1662         else if (cmd == NL80211_CMD_ASSOCIATE)
1663                 ev = EVENT_ASSOC_TIMED_OUT;
1664         else
1665                 return;
1666
1667         os_memset(&event, 0, sizeof(event));
1668         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
1669         wpa_supplicant_event(drv->ctx, ev, &event);
1670 }
1671
1672
1673 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
1674                             struct nlattr *freq, struct nlattr *sig,
1675                             const u8 *frame, size_t len)
1676 {
1677         const struct ieee80211_mgmt *mgmt;
1678         union wpa_event_data event;
1679         u16 fc, stype;
1680         int ssi_signal = 0;
1681         int rx_freq = 0;
1682
1683         wpa_printf(MSG_MSGDUMP, "nl80211: Frame event");
1684         mgmt = (const struct ieee80211_mgmt *) frame;
1685         if (len < 24) {
1686                 wpa_printf(MSG_DEBUG, "nl80211: Too short management frame");
1687                 return;
1688         }
1689
1690         fc = le_to_host16(mgmt->frame_control);
1691         stype = WLAN_FC_GET_STYPE(fc);
1692
1693         if (sig)
1694                 ssi_signal = (s32) nla_get_u32(sig);
1695
1696         os_memset(&event, 0, sizeof(event));
1697         if (freq) {
1698                 event.rx_mgmt.freq = nla_get_u32(freq);
1699                 rx_freq = drv->last_mgmt_freq = event.rx_mgmt.freq;
1700         }
1701         wpa_printf(MSG_DEBUG,
1702                    "nl80211: RX frame freq=%d ssi_signal=%d stype=%u len=%u",
1703                    rx_freq, ssi_signal, stype, (unsigned int) len);
1704         event.rx_mgmt.frame = frame;
1705         event.rx_mgmt.frame_len = len;
1706         event.rx_mgmt.ssi_signal = ssi_signal;
1707         wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
1708 }
1709
1710
1711 static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv,
1712                                       struct nlattr *cookie, const u8 *frame,
1713                                       size_t len, struct nlattr *ack)
1714 {
1715         union wpa_event_data event;
1716         const struct ieee80211_hdr *hdr;
1717         u16 fc;
1718
1719         wpa_printf(MSG_DEBUG, "nl80211: Frame TX status event");
1720         if (!is_ap_interface(drv->nlmode)) {
1721                 u64 cookie_val;
1722
1723                 if (!cookie)
1724                         return;
1725
1726                 cookie_val = nla_get_u64(cookie);
1727                 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:"
1728                            " cookie=0%llx%s (ack=%d)",
1729                            (long long unsigned int) cookie_val,
1730                            cookie_val == drv->send_action_cookie ?
1731                            " (match)" : " (unknown)", ack != NULL);
1732                 if (cookie_val != drv->send_action_cookie)
1733                         return;
1734         }
1735
1736         hdr = (const struct ieee80211_hdr *) frame;
1737         fc = le_to_host16(hdr->frame_control);
1738
1739         os_memset(&event, 0, sizeof(event));
1740         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
1741         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
1742         event.tx_status.dst = hdr->addr1;
1743         event.tx_status.data = frame;
1744         event.tx_status.data_len = len;
1745         event.tx_status.ack = ack != NULL;
1746         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
1747 }
1748
1749
1750 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
1751                                        enum wpa_event_type type,
1752                                        const u8 *frame, size_t len)
1753 {
1754         const struct ieee80211_mgmt *mgmt;
1755         union wpa_event_data event;
1756         const u8 *bssid = NULL;
1757         u16 reason_code = 0;
1758
1759         if (type == EVENT_DEAUTH)
1760                 wpa_printf(MSG_DEBUG, "nl80211: Deauthenticate event");
1761         else
1762                 wpa_printf(MSG_DEBUG, "nl80211: Disassociate event");
1763
1764         mgmt = (const struct ieee80211_mgmt *) frame;
1765         if (len >= 24) {
1766                 bssid = mgmt->bssid;
1767
1768                 if ((drv->capa.flags & WPA_DRIVER_FLAGS_SME) &&
1769                     !drv->associated &&
1770                     os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0 &&
1771                     os_memcmp(bssid, drv->auth_attempt_bssid, ETH_ALEN) != 0 &&
1772                     os_memcmp(bssid, drv->prev_bssid, ETH_ALEN) == 0) {
1773                         /*
1774                          * Avoid issues with some roaming cases where
1775                          * disconnection event for the old AP may show up after
1776                          * we have started connection with the new AP.
1777                          */
1778                         wpa_printf(MSG_DEBUG, "nl80211: Ignore deauth/disassoc event from old AP " MACSTR " when already authenticating with " MACSTR,
1779                                    MAC2STR(bssid),
1780                                    MAC2STR(drv->auth_attempt_bssid));
1781                         return;
1782                 }
1783
1784                 if (drv->associated != 0 &&
1785                     os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
1786                     os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
1787                         /*
1788                          * We have presumably received this deauth as a
1789                          * response to a clear_state_mismatch() outgoing
1790                          * deauth.  Don't let it take us offline!
1791                          */
1792                         wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
1793                                    "from Unknown BSSID " MACSTR " -- ignoring",
1794                                    MAC2STR(bssid));
1795                         return;
1796                 }
1797         }
1798
1799         nl80211_mark_disconnected(drv);
1800         os_memset(&event, 0, sizeof(event));
1801
1802         /* Note: Same offset for Reason Code in both frame subtypes */
1803         if (len >= 24 + sizeof(mgmt->u.deauth))
1804                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1805
1806         if (type == EVENT_DISASSOC) {
1807                 event.disassoc_info.locally_generated =
1808                         !os_memcmp(mgmt->sa, drv->first_bss->addr, ETH_ALEN);
1809                 event.disassoc_info.addr = bssid;
1810                 event.disassoc_info.reason_code = reason_code;
1811                 if (frame + len > mgmt->u.disassoc.variable) {
1812                         event.disassoc_info.ie = mgmt->u.disassoc.variable;
1813                         event.disassoc_info.ie_len = frame + len -
1814                                 mgmt->u.disassoc.variable;
1815                 }
1816         } else {
1817                 event.deauth_info.locally_generated =
1818                         !os_memcmp(mgmt->sa, drv->first_bss->addr, ETH_ALEN);
1819                 event.deauth_info.addr = bssid;
1820                 event.deauth_info.reason_code = reason_code;
1821                 if (frame + len > mgmt->u.deauth.variable) {
1822                         event.deauth_info.ie = mgmt->u.deauth.variable;
1823                         event.deauth_info.ie_len = frame + len -
1824                                 mgmt->u.deauth.variable;
1825                 }
1826         }
1827
1828         wpa_supplicant_event(drv->ctx, type, &event);
1829 }
1830
1831
1832 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1833                                          enum wpa_event_type type,
1834                                          const u8 *frame, size_t len)
1835 {
1836         const struct ieee80211_mgmt *mgmt;
1837         union wpa_event_data event;
1838         u16 reason_code = 0;
1839
1840         if (type == EVENT_UNPROT_DEAUTH)
1841                 wpa_printf(MSG_DEBUG, "nl80211: Unprot Deauthenticate event");
1842         else
1843                 wpa_printf(MSG_DEBUG, "nl80211: Unprot Disassociate event");
1844
1845         if (len < 24)
1846                 return;
1847
1848         mgmt = (const struct ieee80211_mgmt *) frame;
1849
1850         os_memset(&event, 0, sizeof(event));
1851         /* Note: Same offset for Reason Code in both frame subtypes */
1852         if (len >= 24 + sizeof(mgmt->u.deauth))
1853                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1854
1855         if (type == EVENT_UNPROT_DISASSOC) {
1856                 event.unprot_disassoc.sa = mgmt->sa;
1857                 event.unprot_disassoc.da = mgmt->da;
1858                 event.unprot_disassoc.reason_code = reason_code;
1859         } else {
1860                 event.unprot_deauth.sa = mgmt->sa;
1861                 event.unprot_deauth.da = mgmt->da;
1862                 event.unprot_deauth.reason_code = reason_code;
1863         }
1864
1865         wpa_supplicant_event(drv->ctx, type, &event);
1866 }
1867
1868
1869 static void mlme_event(struct i802_bss *bss,
1870                        enum nl80211_commands cmd, struct nlattr *frame,
1871                        struct nlattr *addr, struct nlattr *timed_out,
1872                        struct nlattr *freq, struct nlattr *ack,
1873                        struct nlattr *cookie, struct nlattr *sig)
1874 {
1875         struct wpa_driver_nl80211_data *drv = bss->drv;
1876         const u8 *data;
1877         size_t len;
1878
1879         if (timed_out && addr) {
1880                 mlme_timeout_event(drv, cmd, addr);
1881                 return;
1882         }
1883
1884         if (frame == NULL) {
1885                 wpa_printf(MSG_DEBUG,
1886                            "nl80211: MLME event %d (%s) without frame data",
1887                            cmd, nl80211_command_to_string(cmd));
1888                 return;
1889         }
1890
1891         data = nla_data(frame);
1892         len = nla_len(frame);
1893         if (len < 4 + 2 * ETH_ALEN) {
1894                 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d (%s) on %s("
1895                            MACSTR ") - too short",
1896                            cmd, nl80211_command_to_string(cmd), bss->ifname,
1897                            MAC2STR(bss->addr));
1898                 return;
1899         }
1900         wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d (%s) on %s(" MACSTR
1901                    ") A1=" MACSTR " A2=" MACSTR, cmd,
1902                    nl80211_command_to_string(cmd), bss->ifname,
1903                    MAC2STR(bss->addr), MAC2STR(data + 4),
1904                    MAC2STR(data + 4 + ETH_ALEN));
1905         if (cmd != NL80211_CMD_FRAME_TX_STATUS && !(data[4] & 0x01) &&
1906             os_memcmp(bss->addr, data + 4, ETH_ALEN) != 0 &&
1907             os_memcmp(bss->addr, data + 4 + ETH_ALEN, ETH_ALEN) != 0) {
1908                 wpa_printf(MSG_MSGDUMP, "nl80211: %s: Ignore MLME frame event "
1909                            "for foreign address", bss->ifname);
1910                 return;
1911         }
1912         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1913                     nla_data(frame), nla_len(frame));
1914
1915         switch (cmd) {
1916         case NL80211_CMD_AUTHENTICATE:
1917                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1918                 break;
1919         case NL80211_CMD_ASSOCIATE:
1920                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1921                 break;
1922         case NL80211_CMD_DEAUTHENTICATE:
1923                 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1924                                            nla_data(frame), nla_len(frame));
1925                 break;
1926         case NL80211_CMD_DISASSOCIATE:
1927                 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1928                                            nla_data(frame), nla_len(frame));
1929                 break;
1930         case NL80211_CMD_FRAME:
1931                 mlme_event_mgmt(drv, freq, sig, nla_data(frame),
1932                                 nla_len(frame));
1933                 break;
1934         case NL80211_CMD_FRAME_TX_STATUS:
1935                 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame),
1936                                           nla_len(frame), ack);
1937                 break;
1938         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1939                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1940                                              nla_data(frame), nla_len(frame));
1941                 break;
1942         case NL80211_CMD_UNPROT_DISASSOCIATE:
1943                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1944                                              nla_data(frame), nla_len(frame));
1945                 break;
1946         default:
1947                 break;
1948         }
1949 }
1950
1951
1952 static void mlme_event_michael_mic_failure(struct i802_bss *bss,
1953                                            struct nlattr *tb[])
1954 {
1955         union wpa_event_data data;
1956
1957         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1958         os_memset(&data, 0, sizeof(data));
1959         if (tb[NL80211_ATTR_MAC]) {
1960                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1961                             nla_data(tb[NL80211_ATTR_MAC]),
1962                             nla_len(tb[NL80211_ATTR_MAC]));
1963                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1964         }
1965         if (tb[NL80211_ATTR_KEY_SEQ]) {
1966                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1967                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1968                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1969         }
1970         if (tb[NL80211_ATTR_KEY_TYPE]) {
1971                 enum nl80211_key_type key_type =
1972                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1973                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1974                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1975                         data.michael_mic_failure.unicast = 1;
1976         } else
1977                 data.michael_mic_failure.unicast = 1;
1978
1979         if (tb[NL80211_ATTR_KEY_IDX]) {
1980                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1981                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1982         }
1983
1984         wpa_supplicant_event(bss->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1985 }
1986
1987
1988 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1989                                  struct nlattr *tb[])
1990 {
1991         if (tb[NL80211_ATTR_MAC] == NULL) {
1992                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1993                            "event");
1994                 return;
1995         }
1996         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1997
1998         drv->associated = 1;
1999         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
2000                    MAC2STR(drv->bssid));
2001
2002         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
2003 }
2004
2005
2006 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
2007                                          int cancel_event, struct nlattr *tb[])
2008 {
2009         unsigned int freq, chan_type, duration;
2010         union wpa_event_data data;
2011         u64 cookie;
2012
2013         if (tb[NL80211_ATTR_WIPHY_FREQ])
2014                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
2015         else
2016                 freq = 0;
2017
2018         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
2019                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2020         else
2021                 chan_type = 0;
2022
2023         if (tb[NL80211_ATTR_DURATION])
2024                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
2025         else
2026                 duration = 0;
2027
2028         if (tb[NL80211_ATTR_COOKIE])
2029                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
2030         else
2031                 cookie = 0;
2032
2033         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
2034                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
2035                    cancel_event, freq, chan_type, duration,
2036                    (long long unsigned int) cookie,
2037                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
2038
2039         if (cookie != drv->remain_on_chan_cookie)
2040                 return; /* not for us */
2041
2042         if (cancel_event)
2043                 drv->pending_remain_on_chan = 0;
2044
2045         os_memset(&data, 0, sizeof(data));
2046         data.remain_on_channel.freq = freq;
2047         data.remain_on_channel.duration = duration;
2048         wpa_supplicant_event(drv->ctx, cancel_event ?
2049                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
2050                              EVENT_REMAIN_ON_CHANNEL, &data);
2051 }
2052
2053
2054 static void mlme_event_ft_event(struct wpa_driver_nl80211_data *drv,
2055                                 struct nlattr *tb[])
2056 {
2057         union wpa_event_data data;
2058
2059         os_memset(&data, 0, sizeof(data));
2060
2061         if (tb[NL80211_ATTR_IE]) {
2062                 data.ft_ies.ies = nla_data(tb[NL80211_ATTR_IE]);
2063                 data.ft_ies.ies_len = nla_len(tb[NL80211_ATTR_IE]);
2064         }
2065
2066         if (tb[NL80211_ATTR_IE_RIC]) {
2067                 data.ft_ies.ric_ies = nla_data(tb[NL80211_ATTR_IE_RIC]);
2068                 data.ft_ies.ric_ies_len = nla_len(tb[NL80211_ATTR_IE_RIC]);
2069         }
2070
2071         if (tb[NL80211_ATTR_MAC])
2072                 os_memcpy(data.ft_ies.target_ap,
2073                           nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2074
2075         wpa_printf(MSG_DEBUG, "nl80211: FT event target_ap " MACSTR,
2076                    MAC2STR(data.ft_ies.target_ap));
2077
2078         wpa_supplicant_event(drv->ctx, EVENT_FT_RESPONSE, &data);
2079 }
2080
2081
2082 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
2083                             struct nlattr *tb[])
2084 {
2085         union wpa_event_data event;
2086         struct nlattr *nl;
2087         int rem;
2088         struct scan_info *info;
2089 #define MAX_REPORT_FREQS 50
2090         int freqs[MAX_REPORT_FREQS];
2091         int num_freqs = 0;
2092
2093         if (drv->scan_for_auth) {
2094                 drv->scan_for_auth = 0;
2095                 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing "
2096                            "cfg80211 BSS entry");
2097                 wpa_driver_nl80211_authenticate_retry(drv);
2098                 return;
2099         }
2100
2101         os_memset(&event, 0, sizeof(event));
2102         info = &event.scan_info;
2103         info->aborted = aborted;
2104
2105         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
2106                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
2107                         struct wpa_driver_scan_ssid *s =
2108                                 &info->ssids[info->num_ssids];
2109                         s->ssid = nla_data(nl);
2110                         s->ssid_len = nla_len(nl);
2111                         wpa_printf(MSG_DEBUG, "nl80211: Scan probed for SSID '%s'",
2112                                    wpa_ssid_txt(s->ssid, s->ssid_len));
2113                         info->num_ssids++;
2114                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
2115                                 break;
2116                 }
2117         }
2118         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
2119                 char msg[200], *pos, *end;
2120                 int res;
2121
2122                 pos = msg;
2123                 end = pos + sizeof(msg);
2124                 *pos = '\0';
2125
2126                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
2127                 {
2128                         freqs[num_freqs] = nla_get_u32(nl);
2129                         res = os_snprintf(pos, end - pos, " %d",
2130                                           freqs[num_freqs]);
2131                         if (res > 0 && end - pos > res)
2132                                 pos += res;
2133                         num_freqs++;
2134                         if (num_freqs == MAX_REPORT_FREQS - 1)
2135                                 break;
2136                 }
2137                 info->freqs = freqs;
2138                 info->num_freqs = num_freqs;
2139                 wpa_printf(MSG_DEBUG, "nl80211: Scan included frequencies:%s",
2140                            msg);
2141         }
2142         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
2143 }
2144
2145
2146 static int get_link_signal(struct nl_msg *msg, void *arg)
2147 {
2148         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2149         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2150         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
2151         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
2152                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
2153                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
2154         };
2155         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
2156         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
2157                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
2158                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
2159                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
2160                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
2161         };
2162         struct wpa_signal_info *sig_change = arg;
2163
2164         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2165                   genlmsg_attrlen(gnlh, 0), NULL);
2166         if (!tb[NL80211_ATTR_STA_INFO] ||
2167             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
2168                              tb[NL80211_ATTR_STA_INFO], policy))
2169                 return NL_SKIP;
2170         if (!sinfo[NL80211_STA_INFO_SIGNAL])
2171                 return NL_SKIP;
2172
2173         sig_change->current_signal =
2174                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
2175
2176         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
2177                 sig_change->avg_signal =
2178                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
2179         else
2180                 sig_change->avg_signal = 0;
2181
2182         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
2183                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
2184                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
2185                                      rate_policy)) {
2186                         sig_change->current_txrate = 0;
2187                 } else {
2188                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
2189                                 sig_change->current_txrate =
2190                                         nla_get_u16(rinfo[
2191                                              NL80211_RATE_INFO_BITRATE]) * 100;
2192                         }
2193                 }
2194         }
2195
2196         return NL_SKIP;
2197 }
2198
2199
2200 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
2201                                    struct wpa_signal_info *sig)
2202 {
2203         struct nl_msg *msg;
2204
2205         sig->current_signal = -9999;
2206         sig->current_txrate = 0;
2207
2208         msg = nlmsg_alloc();
2209         if (!msg)
2210                 return -ENOMEM;
2211
2212         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
2213
2214         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2215         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
2216
2217         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
2218  nla_put_failure:
2219         nlmsg_free(msg);
2220         return -ENOBUFS;
2221 }
2222
2223
2224 static int get_link_noise(struct nl_msg *msg, void *arg)
2225 {
2226         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2227         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2228         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
2229         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
2230                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
2231                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
2232         };
2233         struct wpa_signal_info *sig_change = arg;
2234
2235         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2236                   genlmsg_attrlen(gnlh, 0), NULL);
2237
2238         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
2239                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
2240                 return NL_SKIP;
2241         }
2242
2243         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
2244                              tb[NL80211_ATTR_SURVEY_INFO],
2245                              survey_policy)) {
2246                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
2247                            "attributes!");
2248                 return NL_SKIP;
2249         }
2250
2251         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
2252                 return NL_SKIP;
2253
2254         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
2255             sig_change->frequency)
2256                 return NL_SKIP;
2257
2258         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
2259                 return NL_SKIP;
2260
2261         sig_change->current_noise =
2262                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
2263
2264         return NL_SKIP;
2265 }
2266
2267
2268 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
2269                                   struct wpa_signal_info *sig_change)
2270 {
2271         struct nl_msg *msg;
2272
2273         sig_change->current_noise = 9999;
2274         sig_change->frequency = drv->assoc_freq;
2275
2276         msg = nlmsg_alloc();
2277         if (!msg)
2278                 return -ENOMEM;
2279
2280         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
2281
2282         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2283
2284         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
2285  nla_put_failure:
2286         nlmsg_free(msg);
2287         return -ENOBUFS;
2288 }
2289
2290
2291 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
2292 {
2293         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2294         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2295         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
2296         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
2297                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
2298                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
2299         };
2300         struct wpa_scan_results *scan_results = arg;
2301         struct wpa_scan_res *scan_res;
2302         size_t i;
2303
2304         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2305                   genlmsg_attrlen(gnlh, 0), NULL);
2306
2307         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
2308                 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
2309                 return NL_SKIP;
2310         }
2311
2312         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
2313                              tb[NL80211_ATTR_SURVEY_INFO],
2314                              survey_policy)) {
2315                 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
2316                            "attributes");
2317                 return NL_SKIP;
2318         }
2319
2320         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
2321                 return NL_SKIP;
2322
2323         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
2324                 return NL_SKIP;
2325
2326         for (i = 0; i < scan_results->num; ++i) {
2327                 scan_res = scan_results->res[i];
2328                 if (!scan_res)
2329                         continue;
2330                 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
2331                     scan_res->freq)
2332                         continue;
2333                 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
2334                         continue;
2335                 scan_res->noise = (s8)
2336                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
2337                 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
2338         }
2339
2340         return NL_SKIP;
2341 }
2342
2343
2344 static int nl80211_get_noise_for_scan_results(
2345         struct wpa_driver_nl80211_data *drv,
2346         struct wpa_scan_results *scan_res)
2347 {
2348         struct nl_msg *msg;
2349
2350         msg = nlmsg_alloc();
2351         if (!msg)
2352                 return -ENOMEM;
2353
2354         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
2355
2356         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2357
2358         return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
2359                                   scan_res);
2360  nla_put_failure:
2361         nlmsg_free(msg);
2362         return -ENOBUFS;
2363 }
2364
2365
2366 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
2367                               struct nlattr *tb[])
2368 {
2369         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
2370                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
2371                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
2372                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
2373                 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
2374         };
2375         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
2376         enum nl80211_cqm_rssi_threshold_event event;
2377         union wpa_event_data ed;
2378         struct wpa_signal_info sig;
2379         int res;
2380
2381         if (tb[NL80211_ATTR_CQM] == NULL ||
2382             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
2383                              cqm_policy)) {
2384                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
2385                 return;
2386         }
2387
2388         os_memset(&ed, 0, sizeof(ed));
2389
2390         if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
2391                 if (!tb[NL80211_ATTR_MAC])
2392                         return;
2393                 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
2394                           ETH_ALEN);
2395                 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
2396                 return;
2397         }
2398
2399         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
2400                 return;
2401         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
2402
2403         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
2404                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
2405                            "event: RSSI high");
2406                 ed.signal_change.above_threshold = 1;
2407         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
2408                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
2409                            "event: RSSI low");
2410                 ed.signal_change.above_threshold = 0;
2411         } else
2412                 return;
2413
2414         res = nl80211_get_link_signal(drv, &sig);
2415         if (res == 0) {
2416                 ed.signal_change.current_signal = sig.current_signal;
2417                 ed.signal_change.current_txrate = sig.current_txrate;
2418                 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm  txrate: %d",
2419                            sig.current_signal, sig.current_txrate);
2420         }
2421
2422         res = nl80211_get_link_noise(drv, &sig);
2423         if (res == 0) {
2424                 ed.signal_change.current_noise = sig.current_noise;
2425                 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
2426                            sig.current_noise);
2427         }
2428
2429         wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
2430 }
2431
2432
2433 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
2434                                       struct nlattr **tb)
2435 {
2436         u8 *addr;
2437         union wpa_event_data data;
2438
2439         if (tb[NL80211_ATTR_MAC] == NULL)
2440                 return;
2441         addr = nla_data(tb[NL80211_ATTR_MAC]);
2442         wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
2443
2444         if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
2445                 u8 *ies = NULL;
2446                 size_t ies_len = 0;
2447                 if (tb[NL80211_ATTR_IE]) {
2448                         ies = nla_data(tb[NL80211_ATTR_IE]);
2449                         ies_len = nla_len(tb[NL80211_ATTR_IE]);
2450                 }
2451                 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
2452                 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
2453                 return;
2454         }
2455
2456         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
2457                 return;
2458
2459         os_memset(&data, 0, sizeof(data));
2460         os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
2461         wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
2462 }
2463
2464
2465 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
2466                                       struct nlattr **tb)
2467 {
2468         u8 *addr;
2469         union wpa_event_data data;
2470
2471         if (tb[NL80211_ATTR_MAC] == NULL)
2472                 return;
2473         addr = nla_data(tb[NL80211_ATTR_MAC]);
2474         wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
2475                    MAC2STR(addr));
2476
2477         if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
2478                 drv_event_disassoc(drv->ctx, addr);
2479                 return;
2480         }
2481
2482         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
2483                 return;
2484
2485         os_memset(&data, 0, sizeof(data));
2486         os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
2487         wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
2488 }
2489
2490
2491 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
2492                                         struct nlattr **tb)
2493 {
2494         struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
2495         static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
2496                 [NL80211_REKEY_DATA_KEK] = {
2497                         .minlen = NL80211_KEK_LEN,
2498                         .maxlen = NL80211_KEK_LEN,
2499                 },
2500                 [NL80211_REKEY_DATA_KCK] = {
2501                         .minlen = NL80211_KCK_LEN,
2502                         .maxlen = NL80211_KCK_LEN,
2503                 },
2504                 [NL80211_REKEY_DATA_REPLAY_CTR] = {
2505                         .minlen = NL80211_REPLAY_CTR_LEN,
2506                         .maxlen = NL80211_REPLAY_CTR_LEN,
2507                 },
2508         };
2509         union wpa_event_data data;
2510
2511         if (!tb[NL80211_ATTR_MAC])
2512                 return;
2513         if (!tb[NL80211_ATTR_REKEY_DATA])
2514                 return;
2515         if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
2516                              tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
2517                 return;
2518         if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
2519                 return;
2520
2521         os_memset(&data, 0, sizeof(data));
2522         data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
2523         wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
2524                    MAC2STR(data.driver_gtk_rekey.bssid));
2525         data.driver_gtk_rekey.replay_ctr =
2526                 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
2527         wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
2528                     data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
2529         wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
2530 }
2531
2532
2533 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
2534                                           struct nlattr **tb)
2535 {
2536         struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
2537         static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
2538                 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
2539                 [NL80211_PMKSA_CANDIDATE_BSSID] = {
2540                         .minlen = ETH_ALEN,
2541                         .maxlen = ETH_ALEN,
2542                 },
2543                 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
2544         };
2545         union wpa_event_data data;
2546
2547         wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event");
2548
2549         if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
2550                 return;
2551         if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
2552                              tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
2553                 return;
2554         if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
2555             !cand[NL80211_PMKSA_CANDIDATE_BSSID])
2556                 return;
2557
2558         os_memset(&data, 0, sizeof(data));
2559         os_memcpy(data.pmkid_candidate.bssid,
2560                   nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
2561         data.pmkid_candidate.index =
2562                 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
2563         data.pmkid_candidate.preauth =
2564                 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
2565         wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
2566 }
2567
2568
2569 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
2570                                        struct nlattr **tb)
2571 {
2572         union wpa_event_data data;
2573
2574         wpa_printf(MSG_DEBUG, "nl80211: Probe client event");
2575
2576         if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK])
2577                 return;
2578
2579         os_memset(&data, 0, sizeof(data));
2580         os_memcpy(data.client_poll.addr,
2581                   nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2582
2583         wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data);
2584 }
2585
2586
2587 static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv,
2588                                     struct nlattr **tb)
2589 {
2590         union wpa_event_data data;
2591
2592         wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event");
2593
2594         if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION])
2595                 return;
2596
2597         os_memset(&data, 0, sizeof(data));
2598         os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2599         switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) {
2600         case NL80211_TDLS_SETUP:
2601                 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer "
2602                            MACSTR, MAC2STR(data.tdls.peer));
2603                 data.tdls.oper = TDLS_REQUEST_SETUP;
2604                 break;
2605         case NL80211_TDLS_TEARDOWN:
2606                 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer "
2607                            MACSTR, MAC2STR(data.tdls.peer));
2608                 data.tdls.oper = TDLS_REQUEST_TEARDOWN;
2609                 break;
2610         default:
2611                 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione "
2612                            "event");
2613                 return;
2614         }
2615         if (tb[NL80211_ATTR_REASON_CODE]) {
2616                 data.tdls.reason_code =
2617                         nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
2618         }
2619
2620         wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data);
2621 }
2622
2623
2624 static void nl80211_stop_ap(struct wpa_driver_nl80211_data *drv,
2625                             struct nlattr **tb)
2626 {
2627         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_UNAVAILABLE, NULL);
2628 }
2629
2630
2631 static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv,
2632                                          struct nlattr **tb)
2633 {
2634         union wpa_event_data data;
2635         u32 reason;
2636
2637         wpa_printf(MSG_DEBUG, "nl80211: Connect failed event");
2638
2639         if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON])
2640                 return;
2641
2642         os_memset(&data, 0, sizeof(data));
2643         os_memcpy(data.connect_failed_reason.addr,
2644                   nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2645
2646         reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]);
2647         switch (reason) {
2648         case NL80211_CONN_FAIL_MAX_CLIENTS:
2649                 wpa_printf(MSG_DEBUG, "nl80211: Max client reached");
2650                 data.connect_failed_reason.code = MAX_CLIENT_REACHED;
2651                 break;
2652         case NL80211_CONN_FAIL_BLOCKED_CLIENT:
2653                 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR
2654                            " tried to connect",
2655                            MAC2STR(data.connect_failed_reason.addr));
2656                 data.connect_failed_reason.code = BLOCKED_CLIENT;
2657                 break;
2658         default:
2659                 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason "
2660                            "%u", reason);
2661                 return;
2662         }
2663
2664         wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data);
2665 }
2666
2667
2668 static void nl80211_radar_event(struct wpa_driver_nl80211_data *drv,
2669                                 struct nlattr **tb)
2670 {
2671         union wpa_event_data data;
2672         enum nl80211_radar_event event_type;
2673
2674         if (!tb[NL80211_ATTR_WIPHY_FREQ] || !tb[NL80211_ATTR_RADAR_EVENT])
2675                 return;
2676
2677         os_memset(&data, 0, sizeof(data));
2678         data.dfs_event.freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
2679         event_type = nla_get_u32(tb[NL80211_ATTR_RADAR_EVENT]);
2680
2681         /* Check HT params */
2682         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2683                 data.dfs_event.ht_enabled = 1;
2684                 data.dfs_event.chan_offset = 0;
2685
2686                 switch (nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])) {
2687                 case NL80211_CHAN_NO_HT:
2688                         data.dfs_event.ht_enabled = 0;
2689                         break;
2690                 case NL80211_CHAN_HT20:
2691                         break;
2692                 case NL80211_CHAN_HT40PLUS:
2693                         data.dfs_event.chan_offset = 1;
2694                         break;
2695                 case NL80211_CHAN_HT40MINUS:
2696                         data.dfs_event.chan_offset = -1;
2697                         break;
2698                 }
2699         }
2700
2701         /* Get VHT params */
2702         if (tb[NL80211_ATTR_CHANNEL_WIDTH])
2703                 data.dfs_event.chan_width =
2704                         convert2width(nla_get_u32(
2705                                               tb[NL80211_ATTR_CHANNEL_WIDTH]));
2706         if (tb[NL80211_ATTR_CENTER_FREQ1])
2707                 data.dfs_event.cf1 = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
2708         if (tb[NL80211_ATTR_CENTER_FREQ2])
2709                 data.dfs_event.cf2 = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
2710
2711         wpa_printf(MSG_DEBUG, "nl80211: DFS event on freq %d MHz, ht: %d, offset: %d, width: %d, cf1: %dMHz, cf2: %dMHz",
2712                    data.dfs_event.freq, data.dfs_event.ht_enabled,
2713                    data.dfs_event.chan_offset, data.dfs_event.chan_width,
2714                    data.dfs_event.cf1, data.dfs_event.cf2);
2715
2716         switch (event_type) {
2717         case NL80211_RADAR_DETECTED:
2718                 wpa_supplicant_event(drv->ctx, EVENT_DFS_RADAR_DETECTED, &data);
2719                 break;
2720         case NL80211_RADAR_CAC_FINISHED:
2721                 wpa_supplicant_event(drv->ctx, EVENT_DFS_CAC_FINISHED, &data);
2722                 break;
2723         case NL80211_RADAR_CAC_ABORTED:
2724                 wpa_supplicant_event(drv->ctx, EVENT_DFS_CAC_ABORTED, &data);
2725                 break;
2726         case NL80211_RADAR_NOP_FINISHED:
2727                 wpa_supplicant_event(drv->ctx, EVENT_DFS_NOP_FINISHED, &data);
2728                 break;
2729         default:
2730                 wpa_printf(MSG_DEBUG, "nl80211: Unknown radar event %d "
2731                            "received", event_type);
2732                 break;
2733         }
2734 }
2735
2736
2737 static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb,
2738                                    int wds)
2739 {
2740         struct wpa_driver_nl80211_data *drv = bss->drv;
2741         union wpa_event_data event;
2742
2743         if (!tb[NL80211_ATTR_MAC])
2744                 return;
2745
2746         os_memset(&event, 0, sizeof(event));
2747         event.rx_from_unknown.bssid = bss->addr;
2748         event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]);
2749         event.rx_from_unknown.wds = wds;
2750
2751         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2752 }
2753
2754
2755 static void qca_nl80211_avoid_freq(struct wpa_driver_nl80211_data *drv,
2756                                    const u8 *data, size_t len)
2757 {
2758         u32 i, count;
2759         union wpa_event_data event;
2760         struct wpa_freq_range *range = NULL;
2761         const struct qca_avoid_freq_list *freq_range;
2762
2763         freq_range = (const struct qca_avoid_freq_list *) data;
2764         if (len < sizeof(freq_range->count))
2765                 return;
2766
2767         count = freq_range->count;
2768         if (len < sizeof(freq_range->count) +
2769             count * sizeof(struct qca_avoid_freq_range)) {
2770                 wpa_printf(MSG_DEBUG, "nl80211: Ignored too short avoid frequency list (len=%u)",
2771                            (unsigned int) len);
2772                 return;
2773         }
2774
2775         if (count > 0) {
2776                 range = os_calloc(count, sizeof(struct wpa_freq_range));
2777                 if (range == NULL)
2778                         return;
2779         }
2780
2781         os_memset(&event, 0, sizeof(event));
2782         for (i = 0; i < count; i++) {
2783                 unsigned int idx = event.freq_range.num;
2784                 range[idx].min = freq_range->range[i].start_freq;
2785                 range[idx].max = freq_range->range[i].end_freq;
2786                 wpa_printf(MSG_DEBUG, "nl80211: Avoid frequency range: %u-%u",
2787                            range[idx].min, range[idx].max);
2788                 if (range[idx].min > range[idx].max) {
2789                         wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid frequency range");
2790                         continue;
2791                 }
2792                 event.freq_range.num++;
2793         }
2794         event.freq_range.range = range;
2795
2796         wpa_supplicant_event(drv->ctx, EVENT_AVOID_FREQUENCIES, &event);
2797
2798         os_free(range);
2799 }
2800
2801
2802 static void nl80211_vendor_event_qca(struct wpa_driver_nl80211_data *drv,
2803                                      u32 subcmd, u8 *data, size_t len)
2804 {
2805         switch (subcmd) {
2806         case QCA_NL80211_VENDOR_SUBCMD_AVOID_FREQUENCY:
2807                 qca_nl80211_avoid_freq(drv, data, len);
2808                 break;
2809         default:
2810                 wpa_printf(MSG_DEBUG,
2811                            "nl80211: Ignore unsupported QCA vendor event %u",
2812                            subcmd);
2813                 break;
2814         }
2815 }
2816
2817
2818 static void nl80211_vendor_event(struct wpa_driver_nl80211_data *drv,
2819                                  struct nlattr **tb)
2820 {
2821         u32 vendor_id, subcmd, wiphy = 0;
2822         int wiphy_idx;
2823         u8 *data = NULL;
2824         size_t len = 0;
2825
2826         if (!tb[NL80211_ATTR_VENDOR_ID] ||
2827             !tb[NL80211_ATTR_VENDOR_SUBCMD])
2828                 return;
2829
2830         vendor_id = nla_get_u32(tb[NL80211_ATTR_VENDOR_ID]);
2831         subcmd = nla_get_u32(tb[NL80211_ATTR_VENDOR_SUBCMD]);
2832
2833         if (tb[NL80211_ATTR_WIPHY])
2834                 wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2835
2836         wpa_printf(MSG_DEBUG, "nl80211: Vendor event: wiphy=%u vendor_id=0x%x subcmd=%u",
2837                    wiphy, vendor_id, subcmd);
2838
2839         if (tb[NL80211_ATTR_VENDOR_DATA]) {
2840                 data = nla_data(tb[NL80211_ATTR_VENDOR_DATA]);
2841                 len = nla_len(tb[NL80211_ATTR_VENDOR_DATA]);
2842                 wpa_hexdump(MSG_MSGDUMP, "nl80211: Vendor data", data, len);
2843         }
2844
2845         wiphy_idx = nl80211_get_wiphy_index(drv->first_bss);
2846         if (wiphy_idx >= 0 && wiphy_idx != (int) wiphy) {
2847                 wpa_printf(MSG_DEBUG, "nl80211: Ignore vendor event for foreign wiphy %u (own: %d)",
2848                            wiphy, wiphy_idx);
2849                 return;
2850         }
2851
2852         switch (vendor_id) {
2853         case OUI_QCA:
2854                 nl80211_vendor_event_qca(drv, subcmd, data, len);
2855                 break;
2856         default:
2857                 wpa_printf(MSG_DEBUG, "nl80211: Ignore unsupported vendor event");
2858                 break;
2859         }
2860 }
2861
2862
2863 static void do_process_drv_event(struct i802_bss *bss, int cmd,
2864                                  struct nlattr **tb)
2865 {
2866         struct wpa_driver_nl80211_data *drv = bss->drv;
2867         union wpa_event_data data;
2868
2869         wpa_printf(MSG_DEBUG, "nl80211: Drv Event %d (%s) received for %s",
2870                    cmd, nl80211_command_to_string(cmd), bss->ifname);
2871
2872         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
2873             (cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
2874              cmd == NL80211_CMD_SCAN_ABORTED)) {
2875                 wpa_driver_nl80211_set_mode(drv->first_bss,
2876                                             drv->ap_scan_as_station);
2877                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2878         }
2879
2880         switch (cmd) {
2881         case NL80211_CMD_TRIGGER_SCAN:
2882                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan trigger");
2883                 drv->scan_state = SCAN_STARTED;
2884                 wpa_supplicant_event(drv->ctx, EVENT_SCAN_STARTED, NULL);
2885                 break;
2886         case NL80211_CMD_START_SCHED_SCAN:
2887                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan started");
2888                 drv->scan_state = SCHED_SCAN_STARTED;
2889                 break;
2890         case NL80211_CMD_SCHED_SCAN_STOPPED:
2891                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan stopped");
2892                 drv->scan_state = SCHED_SCAN_STOPPED;
2893                 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
2894                 break;
2895         case NL80211_CMD_NEW_SCAN_RESULTS:
2896                 wpa_dbg(drv->ctx, MSG_DEBUG,
2897                         "nl80211: New scan results available");
2898                 drv->scan_state = SCAN_COMPLETED;
2899                 drv->scan_complete_events = 1;
2900                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2901                                      drv->ctx);
2902                 send_scan_event(drv, 0, tb);
2903                 break;
2904         case NL80211_CMD_SCHED_SCAN_RESULTS:
2905                 wpa_dbg(drv->ctx, MSG_DEBUG,
2906                         "nl80211: New sched scan results available");
2907                 drv->scan_state = SCHED_SCAN_RESULTS;
2908                 send_scan_event(drv, 0, tb);
2909                 break;
2910         case NL80211_CMD_SCAN_ABORTED:
2911                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan aborted");
2912                 drv->scan_state = SCAN_ABORTED;
2913                 /*
2914                  * Need to indicate that scan results are available in order
2915                  * not to make wpa_supplicant stop its scanning.
2916                  */
2917                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2918                                      drv->ctx);
2919                 send_scan_event(drv, 1, tb);
2920                 break;
2921         case NL80211_CMD_AUTHENTICATE:
2922         case NL80211_CMD_ASSOCIATE:
2923         case NL80211_CMD_DEAUTHENTICATE:
2924         case NL80211_CMD_DISASSOCIATE:
2925         case NL80211_CMD_FRAME_TX_STATUS:
2926         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
2927         case NL80211_CMD_UNPROT_DISASSOCIATE:
2928                 mlme_event(bss, cmd, tb[NL80211_ATTR_FRAME],
2929                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2930                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2931                            tb[NL80211_ATTR_COOKIE],
2932                            tb[NL80211_ATTR_RX_SIGNAL_DBM]);
2933                 break;
2934         case NL80211_CMD_CONNECT:
2935         case NL80211_CMD_ROAM:
2936                 mlme_event_connect(drv, cmd,
2937                                    tb[NL80211_ATTR_STATUS_CODE],
2938                                    tb[NL80211_ATTR_MAC],
2939                                    tb[NL80211_ATTR_REQ_IE],
2940                                    tb[NL80211_ATTR_RESP_IE]);
2941                 break;
2942         case NL80211_CMD_CH_SWITCH_NOTIFY:
2943                 mlme_event_ch_switch(drv,
2944                                      tb[NL80211_ATTR_IFINDEX],
2945                                      tb[NL80211_ATTR_WIPHY_FREQ],
2946                                      tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2947                                      tb[NL80211_ATTR_CHANNEL_WIDTH],
2948                                      tb[NL80211_ATTR_CENTER_FREQ1],
2949                                      tb[NL80211_ATTR_CENTER_FREQ2]);
2950                 break;
2951         case NL80211_CMD_DISCONNECT:
2952                 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
2953                                       tb[NL80211_ATTR_MAC],
2954                                       tb[NL80211_ATTR_DISCONNECTED_BY_AP]);
2955                 break;
2956         case NL80211_CMD_MICHAEL_MIC_FAILURE:
2957                 mlme_event_michael_mic_failure(bss, tb);
2958                 break;
2959         case NL80211_CMD_JOIN_IBSS:
2960                 mlme_event_join_ibss(drv, tb);
2961                 break;
2962         case NL80211_CMD_REMAIN_ON_CHANNEL:
2963                 mlme_event_remain_on_channel(drv, 0, tb);
2964                 break;
2965         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
2966                 mlme_event_remain_on_channel(drv, 1, tb);
2967                 break;
2968         case NL80211_CMD_NOTIFY_CQM:
2969                 nl80211_cqm_event(drv, tb);
2970                 break;
2971         case NL80211_CMD_REG_CHANGE:
2972                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
2973                 if (tb[NL80211_ATTR_REG_INITIATOR] == NULL)
2974                         break;
2975                 os_memset(&data, 0, sizeof(data));
2976                 switch (nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR])) {
2977                 case NL80211_REGDOM_SET_BY_CORE:
2978                         data.channel_list_changed.initiator =
2979                                 REGDOM_SET_BY_CORE;
2980                         break;
2981                 case NL80211_REGDOM_SET_BY_USER:
2982                         data.channel_list_changed.initiator =
2983                                 REGDOM_SET_BY_USER;
2984                         break;
2985                 case NL80211_REGDOM_SET_BY_DRIVER:
2986                         data.channel_list_changed.initiator =
2987                                 REGDOM_SET_BY_DRIVER;
2988                         break;
2989                 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
2990                         data.channel_list_changed.initiator =
2991                                 REGDOM_SET_BY_COUNTRY_IE;
2992                         break;
2993                 default:
2994                         wpa_printf(MSG_DEBUG, "nl80211: Unknown reg change initiator %d received",
2995                                    nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR]));
2996                         break;
2997                 }
2998                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2999                                      &data);
3000                 break;
3001         case NL80211_CMD_REG_BEACON_HINT:
3002                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
3003                 os_memset(&data, 0, sizeof(data));
3004                 data.channel_list_changed.initiator = REGDOM_BEACON_HINT;
3005                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
3006                                      &data);
3007                 break;
3008         case NL80211_CMD_NEW_STATION:
3009                 nl80211_new_station_event(drv, tb);
3010                 break;
3011         case NL80211_CMD_DEL_STATION:
3012                 nl80211_del_station_event(drv, tb);
3013                 break;
3014         case NL80211_CMD_SET_REKEY_OFFLOAD:
3015                 nl80211_rekey_offload_event(drv, tb);
3016                 break;
3017         case NL80211_CMD_PMKSA_CANDIDATE:
3018                 nl80211_pmksa_candidate_event(drv, tb);
3019                 break;
3020         case NL80211_CMD_PROBE_CLIENT:
3021                 nl80211_client_probe_event(drv, tb);
3022                 break;
3023         case NL80211_CMD_TDLS_OPER:
3024                 nl80211_tdls_oper_event(drv, tb);
3025                 break;
3026         case NL80211_CMD_CONN_FAILED:
3027                 nl80211_connect_failed_event(drv, tb);
3028                 break;
3029         case NL80211_CMD_FT_EVENT:
3030                 mlme_event_ft_event(drv, tb);
3031                 break;
3032         case NL80211_CMD_RADAR_DETECT:
3033                 nl80211_radar_event(drv, tb);
3034                 break;
3035         case NL80211_CMD_STOP_AP:
3036                 nl80211_stop_ap(drv, tb);
3037                 break;
3038         case NL80211_CMD_VENDOR:
3039                 nl80211_vendor_event(drv, tb);
3040                 break;
3041         default:
3042                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event "
3043                         "(cmd=%d)", cmd);
3044                 break;
3045         }
3046 }
3047
3048
3049 static int process_drv_event(struct nl_msg *msg, void *arg)
3050 {
3051         struct wpa_driver_nl80211_data *drv = arg;
3052         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3053         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3054         struct i802_bss *bss;
3055         int ifidx = -1;
3056
3057         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3058                   genlmsg_attrlen(gnlh, 0), NULL);
3059
3060         if (tb[NL80211_ATTR_IFINDEX]) {
3061                 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3062
3063                 for (bss = drv->first_bss; bss; bss = bss->next)
3064                         if (ifidx == -1 || ifidx == bss->ifindex) {
3065                                 do_process_drv_event(bss, gnlh->cmd, tb);
3066                                 return NL_SKIP;
3067                         }
3068                 wpa_printf(MSG_DEBUG,
3069                            "nl80211: Ignored event (cmd=%d) for foreign interface (ifindex %d)",
3070                            gnlh->cmd, ifidx);
3071         } else if (tb[NL80211_ATTR_WDEV]) {
3072                 u64 wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
3073                 wpa_printf(MSG_DEBUG, "nl80211: Process event on P2P device");
3074                 for (bss = drv->first_bss; bss; bss = bss->next) {
3075                         if (bss->wdev_id_set && wdev_id == bss->wdev_id) {
3076                                 do_process_drv_event(bss, gnlh->cmd, tb);
3077                                 return NL_SKIP;
3078                         }
3079                 }
3080                 wpa_printf(MSG_DEBUG,
3081                            "nl80211: Ignored event (cmd=%d) for foreign interface (wdev 0x%llx)",
3082                            gnlh->cmd, (long long unsigned int) wdev_id);
3083         }
3084
3085         return NL_SKIP;
3086 }
3087
3088
3089 static int process_global_event(struct nl_msg *msg, void *arg)
3090 {
3091         struct nl80211_global *global = arg;
3092         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3093         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3094         struct wpa_driver_nl80211_data *drv, *tmp;
3095         int ifidx = -1;
3096         struct i802_bss *bss;
3097         u64 wdev_id = 0;
3098         int wdev_id_set = 0;
3099
3100         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3101                   genlmsg_attrlen(gnlh, 0), NULL);
3102
3103         if (tb[NL80211_ATTR_IFINDEX])
3104                 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3105         else if (tb[NL80211_ATTR_WDEV]) {
3106                 wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
3107                 wdev_id_set = 1;
3108         }
3109
3110         dl_list_for_each_safe(drv, tmp, &global->interfaces,
3111                               struct wpa_driver_nl80211_data, list) {
3112                 for (bss = drv->first_bss; bss; bss = bss->next) {
3113                         if ((ifidx == -1 && !wdev_id_set) ||
3114                             ifidx == bss->ifindex ||
3115                             (wdev_id_set && bss->wdev_id_set &&
3116                              wdev_id == bss->wdev_id)) {
3117                                 do_process_drv_event(bss, gnlh->cmd, tb);
3118                                 return NL_SKIP;
3119                         }
3120                 }
3121         }
3122
3123         return NL_SKIP;
3124 }
3125
3126
3127 static int process_bss_event(struct nl_msg *msg, void *arg)
3128 {
3129         struct i802_bss *bss = arg;
3130         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3131         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3132
3133         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3134                   genlmsg_attrlen(gnlh, 0), NULL);
3135
3136         wpa_printf(MSG_DEBUG, "nl80211: BSS Event %d (%s) received for %s",
3137                    gnlh->cmd, nl80211_command_to_string(gnlh->cmd),
3138                    bss->ifname);
3139
3140         switch (gnlh->cmd) {
3141         case NL80211_CMD_FRAME:
3142         case NL80211_CMD_FRAME_TX_STATUS:
3143                 mlme_event(bss, gnlh->cmd, tb[NL80211_ATTR_FRAME],
3144                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
3145                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
3146                            tb[NL80211_ATTR_COOKIE],
3147                            tb[NL80211_ATTR_RX_SIGNAL_DBM]);
3148                 break;
3149         case NL80211_CMD_UNEXPECTED_FRAME:
3150                 nl80211_spurious_frame(bss, tb, 0);
3151                 break;
3152         case NL80211_CMD_UNEXPECTED_4ADDR_FRAME:
3153                 nl80211_spurious_frame(bss, tb, 1);
3154                 break;
3155         default:
3156                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
3157                            "(cmd=%d)", gnlh->cmd);
3158                 break;
3159         }
3160
3161         return NL_SKIP;
3162 }
3163
3164
3165 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
3166                                              void *handle)
3167 {
3168         struct nl_cb *cb = eloop_ctx;
3169         int res;
3170
3171         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
3172
3173         res = nl_recvmsgs(handle, cb);
3174         if (res) {
3175                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
3176                            __func__, res);
3177         }
3178 }
3179
3180
3181 /**
3182  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
3183  * @priv: driver_nl80211 private data
3184  * @alpha2_arg: country to which to switch to
3185  * Returns: 0 on success, -1 on failure
3186  *
3187  * This asks nl80211 to set the regulatory domain for given
3188  * country ISO / IEC alpha2.
3189  */
3190 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
3191 {
3192         struct i802_bss *bss = priv;
3193         struct wpa_driver_nl80211_data *drv = bss->drv;
3194         char alpha2[3];
3195         struct nl_msg *msg;
3196
3197         msg = nlmsg_alloc();
3198         if (!msg)
3199                 return -ENOMEM;
3200
3201         alpha2[0] = alpha2_arg[0];
3202         alpha2[1] = alpha2_arg[1];
3203         alpha2[2] = '\0';
3204
3205         nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
3206
3207         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
3208         if (send_and_recv_msgs(drv, msg, NULL, NULL))
3209                 return -EINVAL;
3210         return 0;
3211 nla_put_failure:
3212         nlmsg_free(msg);
3213         return -EINVAL;
3214 }
3215
3216
3217 static int nl80211_get_country(struct nl_msg *msg, void *arg)
3218 {
3219         char *alpha2 = arg;
3220         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
3221         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3222
3223         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3224                   genlmsg_attrlen(gnlh, 0), NULL);
3225         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
3226                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
3227                 return NL_SKIP;
3228         }
3229         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
3230         return NL_SKIP;
3231 }
3232
3233
3234 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
3235 {
3236         struct i802_bss *bss = priv;
3237         struct wpa_driver_nl80211_data *drv = bss->drv;
3238         struct nl_msg *msg;
3239         int ret;
3240
3241         msg = nlmsg_alloc();
3242         if (!msg)
3243                 return -ENOMEM;
3244
3245         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
3246         alpha2[0] = '\0';
3247         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
3248         if (!alpha2[0])
3249                 ret = -1;
3250
3251         return ret;
3252 }
3253
3254
3255 static int protocol_feature_handler(struct nl_msg *msg, void *arg)
3256 {
3257         u32 *feat = arg;
3258         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
3259         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3260
3261         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3262                   genlmsg_attrlen(gnlh, 0), NULL);
3263
3264         if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES])
3265                 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]);
3266
3267         return NL_SKIP;
3268 }
3269
3270
3271 static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv)
3272 {
3273         u32 feat = 0;
3274         struct nl_msg *msg;
3275
3276         msg = nlmsg_alloc();
3277         if (!msg)
3278                 goto nla_put_failure;
3279
3280         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES);
3281         if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0)
3282                 return feat;
3283
3284         msg = NULL;
3285 nla_put_failure:
3286         nlmsg_free(msg);
3287         return 0;
3288 }
3289
3290
3291 struct wiphy_info_data {
3292         struct wpa_driver_nl80211_data *drv;
3293         struct wpa_driver_capa *capa;
3294
3295         unsigned int num_multichan_concurrent;
3296
3297         unsigned int error:1;
3298         unsigned int device_ap_sme:1;
3299         unsigned int poll_command_supported:1;
3300         unsigned int data_tx_status:1;
3301         unsigned int monitor_supported:1;
3302         unsigned int auth_supported:1;
3303         unsigned int connect_supported:1;
3304         unsigned int p2p_go_supported:1;
3305         unsigned int p2p_client_supported:1;
3306         unsigned int p2p_concurrent:1;
3307         unsigned int channel_switch_supported:1;
3308         unsigned int set_qos_map_supported:1;
3309 };
3310
3311
3312 static unsigned int probe_resp_offload_support(int supp_protocols)
3313 {
3314         unsigned int prot = 0;
3315
3316         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
3317                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
3318         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
3319                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
3320         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
3321                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
3322         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
3323                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
3324
3325         return prot;
3326 }
3327
3328
3329 static void wiphy_info_supported_iftypes(struct wiphy_info_data *info,
3330                                          struct nlattr *tb)
3331 {
3332         struct nlattr *nl_mode;
3333         int i;
3334
3335         if (tb == NULL)
3336                 return;
3337
3338         nla_for_each_nested(nl_mode, tb, i) {
3339                 switch (nla_type(nl_mode)) {
3340                 case NL80211_IFTYPE_AP:
3341                         info->capa->flags |= WPA_DRIVER_FLAGS_AP;
3342                         break;
3343                 case NL80211_IFTYPE_ADHOC:
3344                         info->capa->flags |= WPA_DRIVER_FLAGS_IBSS;
3345                         break;
3346                 case NL80211_IFTYPE_P2P_DEVICE:
3347                         info->capa->flags |=
3348                                 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
3349                         break;
3350                 case NL80211_IFTYPE_P2P_GO:
3351                         info->p2p_go_supported = 1;
3352                         break;
3353                 case NL80211_IFTYPE_P2P_CLIENT:
3354                         info->p2p_client_supported = 1;
3355                         break;
3356                 case NL80211_IFTYPE_MONITOR:
3357                         info->monitor_supported = 1;
3358                         break;
3359                 }
3360         }
3361 }
3362
3363
3364 static int wiphy_info_iface_comb_process(struct wiphy_info_data *info,
3365                                          struct nlattr *nl_combi)
3366 {
3367         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
3368         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
3369         struct nlattr *nl_limit, *nl_mode;
3370         int err, rem_limit, rem_mode;
3371         int combination_has_p2p = 0, combination_has_mgd = 0;
3372         static struct nla_policy
3373         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
3374                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
3375                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
3376                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
3377                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
3378                 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
3379         },
3380         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
3381                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
3382                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
3383         };
3384
3385         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
3386                                nl_combi, iface_combination_policy);
3387         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
3388             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
3389             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
3390                 return 0; /* broken combination */
3391
3392         if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS])
3393                 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR;
3394
3395         nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS],
3396                             rem_limit) {
3397                 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
3398                                        nl_limit, iface_limit_policy);
3399                 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES])
3400                         return 0; /* broken combination */
3401
3402                 nla_for_each_nested(nl_mode,
3403                                     tb_limit[NL80211_IFACE_LIMIT_TYPES],
3404                                     rem_mode) {
3405                         int ift = nla_type(nl_mode);
3406                         if (ift == NL80211_IFTYPE_P2P_GO ||
3407                             ift == NL80211_IFTYPE_P2P_CLIENT)
3408                                 combination_has_p2p = 1;
3409                         if (ift == NL80211_IFTYPE_STATION)
3410                                 combination_has_mgd = 1;
3411                 }
3412                 if (combination_has_p2p && combination_has_mgd)
3413                         break;
3414         }
3415
3416         if (combination_has_p2p && combination_has_mgd) {
3417                 info->p2p_concurrent = 1;
3418                 info->num_multichan_concurrent =
3419                         nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]);
3420                 return 1;
3421         }
3422
3423         return 0;
3424 }
3425
3426
3427 static void wiphy_info_iface_comb(struct wiphy_info_data *info,
3428                                   struct nlattr *tb)
3429 {
3430         struct nlattr *nl_combi;
3431         int rem_combi;
3432
3433         if (tb == NULL)
3434                 return;
3435
3436         nla_for_each_nested(nl_combi, tb, rem_combi) {
3437                 if (wiphy_info_iface_comb_process(info, nl_combi) > 0)
3438                         break;
3439         }
3440 }
3441
3442
3443 static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
3444                                  struct nlattr *tb)
3445 {
3446         struct nlattr *nl_cmd;
3447         int i;
3448
3449         if (tb == NULL)
3450                 return;
3451
3452         nla_for_each_nested(nl_cmd, tb, i) {
3453                 switch (nla_get_u32(nl_cmd)) {
3454                 case NL80211_CMD_AUTHENTICATE:
3455                         info->auth_supported = 1;
3456                         break;
3457                 case NL80211_CMD_CONNECT:
3458                         info->connect_supported = 1;
3459                         break;
3460                 case NL80211_CMD_START_SCHED_SCAN:
3461                         info->capa->sched_scan_supported = 1;
3462                         break;
3463                 case NL80211_CMD_PROBE_CLIENT:
3464                         info->poll_command_supported = 1;
3465                         break;
3466                 case NL80211_CMD_CHANNEL_SWITCH:
3467                         info->channel_switch_supported = 1;
3468                         break;
3469                 case NL80211_CMD_SET_QOS_MAP:
3470                         info->set_qos_map_supported = 1;
3471                         break;
3472                 }
3473         }
3474 }
3475
3476
3477 static void wiphy_info_cipher_suites(struct wiphy_info_data *info,
3478                                      struct nlattr *tb)
3479 {
3480         int i, num;
3481         u32 *ciphers;
3482
3483         if (tb == NULL)
3484                 return;
3485
3486         num = nla_len(tb) / sizeof(u32);
3487         ciphers = nla_data(tb);
3488         for (i = 0; i < num; i++) {
3489                 u32 c = ciphers[i];
3490
3491                 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d",
3492                            c >> 24, (c >> 16) & 0xff,
3493                            (c >> 8) & 0xff, c & 0xff);
3494                 switch (c) {
3495                 case WLAN_CIPHER_SUITE_CCMP_256:
3496                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256;
3497                         break;
3498                 case WLAN_CIPHER_SUITE_GCMP_256:
3499                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256;
3500                         break;
3501                 case WLAN_CIPHER_SUITE_CCMP:
3502                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP;
3503                         break;
3504                 case WLAN_CIPHER_SUITE_GCMP:
3505                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP;
3506                         break;
3507                 case WLAN_CIPHER_SUITE_TKIP:
3508                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP;
3509                         break;
3510                 case WLAN_CIPHER_SUITE_WEP104:
3511                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104;
3512                         break;
3513                 case WLAN_CIPHER_SUITE_WEP40:
3514                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40;
3515                         break;
3516                 case WLAN_CIPHER_SUITE_AES_CMAC:
3517                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP;
3518                         break;
3519                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3520                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128;
3521                         break;
3522                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3523                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256;
3524                         break;
3525                 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
3526                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256;
3527                         break;
3528                 }
3529         }
3530 }
3531
3532
3533 static void wiphy_info_max_roc(struct wpa_driver_capa *capa,
3534                                struct nlattr *tb)
3535 {
3536         if (tb)
3537                 capa->max_remain_on_chan = nla_get_u32(tb);
3538 }
3539
3540
3541 static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls,
3542                             struct nlattr *ext_setup)
3543 {
3544         if (tdls == NULL)
3545                 return;
3546
3547         wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
3548         capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
3549
3550         if (ext_setup) {
3551                 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
3552                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
3553         }
3554 }
3555
3556
3557 static void wiphy_info_feature_flags(struct wiphy_info_data *info,
3558                                      struct nlattr *tb)
3559 {
3560         u32 flags;
3561         struct wpa_driver_capa *capa = info->capa;
3562
3563         if (tb == NULL)
3564                 return;
3565
3566         flags = nla_get_u32(tb);
3567
3568         if (flags & NL80211_FEATURE_SK_TX_STATUS)
3569                 info->data_tx_status = 1;
3570
3571         if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
3572                 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
3573
3574         if (flags & NL80211_FEATURE_SAE)
3575                 capa->flags |= WPA_DRIVER_FLAGS_SAE;
3576
3577         if (flags & NL80211_FEATURE_NEED_OBSS_SCAN)
3578                 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN;
3579 }
3580
3581
3582 static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa,
3583                                           struct nlattr *tb)
3584 {
3585         u32 protocols;
3586
3587         if (tb == NULL)
3588                 return;
3589
3590         protocols = nla_get_u32(tb);
3591         wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP "
3592                    "mode");
3593         capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
3594         capa->probe_resp_offloads = probe_resp_offload_support(protocols);
3595 }
3596
3597
3598 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
3599 {
3600         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3601         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3602         struct wiphy_info_data *info = arg;
3603         struct wpa_driver_capa *capa = info->capa;
3604         struct wpa_driver_nl80211_data *drv = info->drv;
3605
3606         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3607                   genlmsg_attrlen(gnlh, 0), NULL);
3608
3609         if (tb[NL80211_ATTR_WIPHY_NAME])
3610                 os_strlcpy(drv->phyname,
3611                            nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]),
3612                            sizeof(drv->phyname));
3613         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
3614                 capa->max_scan_ssids =
3615                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
3616
3617         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
3618                 capa->max_sched_scan_ssids =
3619                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
3620
3621         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
3622                 capa->max_match_sets =
3623                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
3624
3625         if (tb[NL80211_ATTR_MAC_ACL_MAX])
3626                 capa->max_acl_mac_addrs =
3627                         nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
3628
3629         wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
3630         wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);
3631         wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]);
3632         wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]);
3633
3634         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
3635                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
3636                            "off-channel TX");
3637                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
3638         }
3639
3640         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
3641                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
3642                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
3643         }
3644
3645         wiphy_info_max_roc(capa,
3646                            tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
3647
3648         if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
3649                 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
3650
3651         wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT],
3652                         tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]);
3653
3654         if (tb[NL80211_ATTR_DEVICE_AP_SME])
3655                 info->device_ap_sme = 1;
3656
3657         wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]);
3658         wiphy_info_probe_resp_offload(capa,
3659                                       tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
3660
3661         if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] &&
3662             drv->extended_capa == NULL) {
3663                 drv->extended_capa =
3664                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
3665                 if (drv->extended_capa) {
3666                         os_memcpy(drv->extended_capa,
3667                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
3668                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
3669                         drv->extended_capa_len =
3670                                 nla_len(tb[NL80211_ATTR_EXT_CAPA]);
3671                 }
3672                 drv->extended_capa_mask =
3673                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
3674                 if (drv->extended_capa_mask) {
3675                         os_memcpy(drv->extended_capa_mask,
3676                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
3677                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
3678                 } else {
3679                         os_free(drv->extended_capa);
3680                         drv->extended_capa = NULL;
3681                         drv->extended_capa_len = 0;
3682                 }
3683         }
3684
3685         if (tb[NL80211_ATTR_VENDOR_DATA]) {
3686                 struct nlattr *nl;
3687                 int rem;
3688
3689                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) {
3690                         struct nl80211_vendor_cmd_info *vinfo;
3691                         if (nla_len(nl) != sizeof(*vinfo)) {
3692                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
3693                                 continue;
3694                         }
3695                         vinfo = nla_data(nl);
3696                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u",
3697                                    vinfo->vendor_id, vinfo->subcmd);
3698                 }
3699         }
3700
3701         if (tb[NL80211_ATTR_VENDOR_EVENTS]) {
3702                 struct nlattr *nl;
3703                 int rem;
3704
3705                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) {
3706                         struct nl80211_vendor_cmd_info *vinfo;
3707                         if (nla_len(nl) != sizeof(*vinfo)) {
3708                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
3709                                 continue;
3710                         }
3711                         vinfo = nla_data(nl);
3712                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u",
3713                                    vinfo->vendor_id, vinfo->subcmd);
3714                 }
3715         }
3716
3717         return NL_SKIP;
3718 }
3719
3720
3721 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
3722                                        struct wiphy_info_data *info)
3723 {
3724         u32 feat;
3725         struct nl_msg *msg;
3726
3727         os_memset(info, 0, sizeof(*info));
3728         info->capa = &drv->capa;
3729         info->drv = drv;
3730
3731         msg = nlmsg_alloc();
3732         if (!msg)
3733                 return -1;
3734
3735         feat = get_nl80211_protocol_features(drv);
3736         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
3737                 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY);
3738         else
3739                 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
3740
3741         NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
3742         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
3743                 goto nla_put_failure;
3744
3745         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
3746                 return -1;
3747
3748         if (info->auth_supported)
3749                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
3750         else if (!info->connect_supported) {
3751                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
3752                            "authentication/association or connect commands");
3753                 info->error = 1;
3754         }
3755
3756         if (info->p2p_go_supported && info->p2p_client_supported)
3757                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
3758         if (info->p2p_concurrent) {
3759                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
3760                            "interface (driver advertised support)");
3761                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
3762                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
3763         }
3764         if (info->num_multichan_concurrent > 1) {
3765                 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
3766                            "concurrent (driver advertised support)");
3767                 drv->capa.num_multichan_concurrent =
3768                         info->num_multichan_concurrent;
3769         }
3770
3771         /* default to 5000 since early versions of mac80211 don't set it */
3772         if (!drv->capa.max_remain_on_chan)
3773                 drv->capa.max_remain_on_chan = 5000;
3774
3775         if (info->channel_switch_supported)
3776                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
3777
3778         return 0;
3779 nla_put_failure:
3780         nlmsg_free(msg);
3781         return -1;
3782 }
3783
3784
3785 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
3786 {
3787         struct wiphy_info_data info;
3788         if (wpa_driver_nl80211_get_info(drv, &info))
3789                 return -1;
3790
3791         if (info.error)
3792                 return -1;
3793
3794         drv->has_capability = 1;
3795         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
3796                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
3797                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
3798                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
3799         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
3800                 WPA_DRIVER_AUTH_SHARED |
3801                 WPA_DRIVER_AUTH_LEAP;
3802
3803         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
3804         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
3805         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
3806
3807         if (!info.device_ap_sme) {
3808                 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
3809
3810                 /*
3811                  * No AP SME is currently assumed to also indicate no AP MLME
3812                  * in the driver/firmware.
3813                  */
3814                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
3815         }
3816
3817         drv->device_ap_sme = info.device_ap_sme;
3818         drv->poll_command_supported = info.poll_command_supported;
3819         drv->data_tx_status = info.data_tx_status;
3820         if (info.set_qos_map_supported)
3821                 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
3822
3823         /*
3824          * If poll command and tx status are supported, mac80211 is new enough
3825          * to have everything we need to not need monitor interfaces.
3826          */
3827         drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
3828
3829         if (drv->device_ap_sme && drv->use_monitor) {
3830                 /*
3831                  * Non-mac80211 drivers may not support monitor interface.
3832                  * Make sure we do not get stuck with incorrect capability here
3833                  * by explicitly testing this.
3834                  */
3835                 if (!info.monitor_supported) {
3836                         wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
3837                                    "with device_ap_sme since no monitor mode "
3838                                    "support detected");
3839                         drv->use_monitor = 0;
3840                 }
3841         }
3842
3843         /*
3844          * If we aren't going to use monitor interfaces, but the
3845          * driver doesn't support data TX status, we won't get TX
3846          * status for EAPOL frames.
3847          */
3848         if (!drv->use_monitor && !info.data_tx_status)
3849                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
3850
3851         return 0;
3852 }
3853
3854
3855 #ifdef ANDROID
3856 static int android_genl_ctrl_resolve(struct nl_handle *handle,
3857                                      const char *name)
3858 {
3859         /*
3860          * Android ICS has very minimal genl_ctrl_resolve() implementation, so
3861          * need to work around that.
3862          */
3863         struct nl_cache *cache = NULL;
3864         struct genl_family *nl80211 = NULL;
3865         int id = -1;
3866
3867         if (genl_ctrl_alloc_cache(handle, &cache) < 0) {
3868                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
3869                            "netlink cache");
3870                 goto fail;
3871         }
3872
3873         nl80211 = genl_ctrl_search_by_name(cache, name);
3874         if (nl80211 == NULL)
3875                 goto fail;
3876
3877         id = genl_family_get_id(nl80211);
3878
3879 fail:
3880         if (nl80211)
3881                 genl_family_put(nl80211);
3882         if (cache)
3883                 nl_cache_free(cache);
3884
3885         return id;
3886 }
3887 #define genl_ctrl_resolve android_genl_ctrl_resolve
3888 #endif /* ANDROID */
3889
3890
3891 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
3892 {
3893         int ret;
3894
3895         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
3896         if (global->nl_cb == NULL) {
3897                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
3898                            "callbacks");
3899                 return -1;
3900         }
3901
3902         global->nl = nl_create_handle(global->nl_cb, "nl");
3903         if (global->nl == NULL)
3904                 goto err;
3905
3906         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
3907         if (global->nl80211_id < 0) {
3908                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
3909                            "found");
3910                 goto err;
3911         }
3912
3913         global->nl_event = nl_create_handle(global->nl_cb, "event");
3914         if (global->nl_event == NULL)
3915                 goto err;
3916
3917         ret = nl_get_multicast_id(global, "nl80211", "scan");
3918         if (ret >= 0)
3919                 ret = nl_socket_add_membership(global->nl_event, ret);
3920         if (ret < 0) {
3921                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
3922                            "membership for scan events: %d (%s)",
3923                            ret, strerror(-ret));
3924                 goto err;
3925         }
3926
3927         ret = nl_get_multicast_id(global, "nl80211", "mlme");
3928         if (ret >= 0)
3929                 ret = nl_socket_add_membership(global->nl_event, ret);
3930         if (ret < 0) {
3931                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
3932                            "membership for mlme events: %d (%s)",
3933                            ret, strerror(-ret));
3934                 goto err;
3935         }
3936
3937         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
3938         if (ret >= 0)
3939                 ret = nl_socket_add_membership(global->nl_event, ret);
3940         if (ret < 0) {
3941                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
3942                            "membership for regulatory events: %d (%s)",
3943                            ret, strerror(-ret));
3944                 /* Continue without regulatory events */
3945         }
3946
3947         ret = nl_get_multicast_id(global, "nl80211", "vendor");
3948         if (ret >= 0)
3949                 ret = nl_socket_add_membership(global->nl_event, ret);
3950         if (ret < 0) {
3951                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
3952                            "membership for vendor events: %d (%s)",
3953                            ret, strerror(-ret));
3954                 /* Continue without vendor events */
3955         }
3956
3957         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
3958                   no_seq_check, NULL);
3959         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
3960                   process_global_event, global);
3961
3962         nl80211_register_eloop_read(&global->nl_event,
3963                                     wpa_driver_nl80211_event_receive,
3964                                     global->nl_cb);
3965
3966         return 0;
3967
3968 err:
3969         nl_destroy_handles(&global->nl_event);
3970         nl_destroy_handles(&global->nl);
3971         nl_cb_put(global->nl_cb);
3972         global->nl_cb = NULL;
3973         return -1;
3974 }
3975
3976
3977 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
3978 {
3979         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
3980         if (!drv->nl_cb) {
3981                 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
3982                 return -1;
3983         }
3984
3985         nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
3986                   no_seq_check, NULL);
3987         nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
3988                   process_drv_event, drv);
3989
3990         return 0;
3991 }
3992
3993
3994 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
3995 {
3996         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
3997         /*
3998          * This may be for any interface; use ifdown event to disable
3999          * interface.
4000          */
4001 }
4002
4003
4004 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
4005 {
4006         struct wpa_driver_nl80211_data *drv = ctx;
4007         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
4008         if (i802_set_iface_flags(drv->first_bss, 1)) {
4009                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
4010                            "after rfkill unblock");
4011                 return;
4012         }
4013         /* rtnetlink ifup handler will report interface as enabled */
4014 }
4015
4016
4017 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
4018                                                       void *eloop_ctx,
4019                                                       void *handle)
4020 {
4021         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4022         u8 data[2048];
4023         struct msghdr msg;
4024         struct iovec entry;
4025         u8 control[512];
4026         struct cmsghdr *cmsg;
4027         int res, found_ee = 0, found_wifi = 0, acked = 0;
4028         union wpa_event_data event;
4029
4030         memset(&msg, 0, sizeof(msg));
4031         msg.msg_iov = &entry;
4032         msg.msg_iovlen = 1;
4033         entry.iov_base = data;
4034         entry.iov_len = sizeof(data);
4035         msg.msg_control = &control;
4036         msg.msg_controllen = sizeof(control);
4037
4038         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
4039         /* if error or not fitting 802.3 header, return */
4040         if (res < 14)
4041                 return;
4042
4043         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
4044         {
4045                 if (cmsg->cmsg_level == SOL_SOCKET &&
4046                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
4047                         int *ack;
4048
4049                         found_wifi = 1;
4050                         ack = (void *)CMSG_DATA(cmsg);
4051                         acked = *ack;
4052                 }
4053
4054                 if (cmsg->cmsg_level == SOL_PACKET &&
4055                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
4056                         struct sock_extended_err *err =
4057                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
4058
4059                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
4060                                 found_ee = 1;
4061                 }
4062         }
4063
4064         if (!found_ee || !found_wifi)
4065                 return;
4066
4067         memset(&event, 0, sizeof(event));
4068         event.eapol_tx_status.dst = data;
4069         event.eapol_tx_status.data = data + 14;
4070         event.eapol_tx_status.data_len = res - 14;
4071         event.eapol_tx_status.ack = acked;
4072         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
4073 }
4074
4075
4076 static int nl80211_init_bss(struct i802_bss *bss)
4077 {
4078         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
4079         if (!bss->nl_cb)
4080                 return -1;
4081
4082         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
4083                   no_seq_check, NULL);
4084         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
4085                   process_bss_event, bss);
4086
4087         return 0;
4088 }
4089
4090
4091 static void nl80211_destroy_bss(struct i802_bss *bss)
4092 {
4093         nl_cb_put(bss->nl_cb);
4094         bss->nl_cb = NULL;
4095 }
4096
4097
4098 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
4099                                           void *global_priv, int hostapd,
4100                                           const u8 *set_addr)
4101 {
4102         struct wpa_driver_nl80211_data *drv;
4103         struct rfkill_config *rcfg;
4104         struct i802_bss *bss;
4105
4106         if (global_priv == NULL)
4107                 return NULL;
4108         drv = os_zalloc(sizeof(*drv));
4109         if (drv == NULL)
4110                 return NULL;
4111         drv->global = global_priv;
4112         drv->ctx = ctx;
4113         drv->hostapd = !!hostapd;
4114         drv->eapol_sock = -1;
4115         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4116         drv->if_indices = drv->default_if_indices;
4117
4118         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
4119         if (!drv->first_bss) {
4120                 os_free(drv);
4121                 return NULL;
4122         }
4123         bss = drv->first_bss;
4124         bss->drv = drv;
4125         bss->ctx = ctx;
4126
4127         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
4128         drv->monitor_ifidx = -1;
4129         drv->monitor_sock = -1;
4130         drv->eapol_tx_sock = -1;
4131         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
4132
4133         if (wpa_driver_nl80211_init_nl(drv)) {
4134                 os_free(drv);
4135                 return NULL;
4136         }
4137
4138         if (nl80211_init_bss(bss))
4139                 goto failed;
4140
4141         rcfg = os_zalloc(sizeof(*rcfg));
4142         if (rcfg == NULL)
4143                 goto failed;
4144         rcfg->ctx = drv;
4145         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
4146         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
4147         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
4148         drv->rfkill = rfkill_init(rcfg);
4149         if (drv->rfkill == NULL) {
4150                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
4151                 os_free(rcfg);
4152         }
4153
4154         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
4155                 drv->start_iface_up = 1;
4156
4157         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1))
4158                 goto failed;
4159
4160         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
4161         if (drv->eapol_tx_sock < 0)
4162                 goto failed;
4163
4164         if (drv->data_tx_status) {
4165                 int enabled = 1;
4166
4167                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
4168                                &enabled, sizeof(enabled)) < 0) {
4169                         wpa_printf(MSG_DEBUG,
4170                                 "nl80211: wifi status sockopt failed\n");
4171                         drv->data_tx_status = 0;
4172                         if (!drv->use_monitor)
4173                                 drv->capa.flags &=
4174                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
4175                 } else {
4176                         eloop_register_read_sock(drv->eapol_tx_sock,
4177                                 wpa_driver_nl80211_handle_eapol_tx_status,
4178                                 drv, NULL);
4179                 }
4180         }
4181
4182         if (drv->global) {
4183                 dl_list_add(&drv->global->interfaces, &drv->list);
4184                 drv->in_interface_list = 1;
4185         }
4186
4187         return bss;
4188
4189 failed:
4190         wpa_driver_nl80211_deinit(bss);
4191         return NULL;
4192 }
4193
4194
4195 /**
4196  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
4197  * @ctx: context to be used when calling wpa_supplicant functions,
4198  * e.g., wpa_supplicant_event()
4199  * @ifname: interface name, e.g., wlan0
4200  * @global_priv: private driver global data from global_init()
4201  * Returns: Pointer to private data, %NULL on failure
4202  */
4203 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
4204                                       void *global_priv)
4205 {
4206         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL);
4207 }
4208
4209
4210 static int nl80211_register_frame(struct i802_bss *bss,
4211                                   struct nl_handle *nl_handle,
4212                                   u16 type, const u8 *match, size_t match_len)
4213 {
4214         struct wpa_driver_nl80211_data *drv = bss->drv;
4215         struct nl_msg *msg;
4216         int ret = -1;
4217         char buf[30];
4218
4219         msg = nlmsg_alloc();
4220         if (!msg)
4221                 return -1;
4222
4223         buf[0] = '\0';
4224         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
4225         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p match=%s",
4226                    type, nl_handle, buf);
4227
4228         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
4229
4230         if (nl80211_set_iface_id(msg, bss) < 0)
4231                 goto nla_put_failure;
4232
4233         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
4234         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
4235
4236         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
4237         msg = NULL;
4238         if (ret) {
4239                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
4240                            "failed (type=%u): ret=%d (%s)",
4241                            type, ret, strerror(-ret));
4242                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
4243                             match, match_len);
4244                 goto nla_put_failure;
4245         }
4246         ret = 0;
4247 nla_put_failure:
4248         nlmsg_free(msg);
4249         return ret;
4250 }
4251
4252
4253 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
4254 {
4255         struct wpa_driver_nl80211_data *drv = bss->drv;
4256
4257         if (bss->nl_mgmt) {
4258                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
4259                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
4260                 return -1;
4261         }
4262
4263         bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
4264         if (bss->nl_mgmt == NULL)
4265                 return -1;
4266
4267         return 0;
4268 }
4269
4270
4271 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
4272 {
4273         nl80211_register_eloop_read(&bss->nl_mgmt,
4274                                     wpa_driver_nl80211_event_receive,
4275                                     bss->nl_cb);
4276 }
4277
4278
4279 static int nl80211_register_action_frame(struct i802_bss *bss,
4280                                          const u8 *match, size_t match_len)
4281 {
4282         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
4283         return nl80211_register_frame(bss, bss->nl_mgmt,
4284                                       type, match, match_len);
4285 }
4286
4287
4288 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
4289 {
4290         struct wpa_driver_nl80211_data *drv = bss->drv;
4291         int ret = 0;
4292
4293         if (nl80211_alloc_mgmt_handle(bss))
4294                 return -1;
4295         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
4296                    "handle %p", bss->nl_mgmt);
4297
4298         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
4299                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
4300
4301                 /* register for any AUTH message */
4302                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
4303         }
4304
4305 #ifdef CONFIG_INTERWORKING
4306         /* QoS Map Configure */
4307         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
4308                 ret = -1;
4309 #endif /* CONFIG_INTERWORKING */
4310 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
4311         /* GAS Initial Request */
4312         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
4313                 ret = -1;
4314         /* GAS Initial Response */
4315         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
4316                 ret = -1;
4317         /* GAS Comeback Request */
4318         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
4319                 ret = -1;
4320         /* GAS Comeback Response */
4321         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
4322                 ret = -1;
4323         /* Protected GAS Initial Request */
4324         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
4325                 ret = -1;
4326         /* Protected GAS Initial Response */
4327         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
4328                 ret = -1;
4329         /* Protected GAS Comeback Request */
4330         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
4331                 ret = -1;
4332         /* Protected GAS Comeback Response */
4333         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
4334                 ret = -1;
4335 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
4336 #ifdef CONFIG_P2P
4337         /* P2P Public Action */
4338         if (nl80211_register_action_frame(bss,
4339                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
4340                                           6) < 0)
4341                 ret = -1;
4342         /* P2P Action */
4343         if (nl80211_register_action_frame(bss,
4344                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
4345                                           5) < 0)
4346                 ret = -1;
4347 #endif /* CONFIG_P2P */
4348 #ifdef CONFIG_IEEE80211W
4349         /* SA Query Response */
4350         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
4351                 ret = -1;
4352 #endif /* CONFIG_IEEE80211W */
4353 #ifdef CONFIG_TDLS
4354         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
4355                 /* TDLS Discovery Response */
4356                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
4357                     0)
4358                         ret = -1;
4359         }
4360 #endif /* CONFIG_TDLS */
4361
4362         /* FT Action frames */
4363         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
4364                 ret = -1;
4365         else
4366                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
4367                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
4368
4369         /* WNM - BSS Transition Management Request */
4370         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
4371                 ret = -1;
4372         /* WNM-Sleep Mode Response */
4373         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
4374                 ret = -1;
4375
4376         nl80211_mgmt_handle_register_eloop(bss);
4377
4378         return ret;
4379 }
4380
4381
4382 static int nl80211_register_spurious_class3(struct i802_bss *bss)
4383 {
4384         struct wpa_driver_nl80211_data *drv = bss->drv;
4385         struct nl_msg *msg;
4386         int ret = -1;
4387
4388         msg = nlmsg_alloc();
4389         if (!msg)
4390                 return -1;
4391
4392         nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
4393
4394         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
4395
4396         ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
4397         msg = NULL;
4398         if (ret) {
4399                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
4400                            "failed: ret=%d (%s)",
4401                            ret, strerror(-ret));
4402                 goto nla_put_failure;
4403         }
4404         ret = 0;
4405 nla_put_failure:
4406         nlmsg_free(msg);
4407         return ret;
4408 }
4409
4410
4411 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
4412 {
4413         static const int stypes[] = {
4414                 WLAN_FC_STYPE_AUTH,
4415                 WLAN_FC_STYPE_ASSOC_REQ,
4416                 WLAN_FC_STYPE_REASSOC_REQ,
4417                 WLAN_FC_STYPE_DISASSOC,
4418                 WLAN_FC_STYPE_DEAUTH,
4419                 WLAN_FC_STYPE_ACTION,
4420                 WLAN_FC_STYPE_PROBE_REQ,
4421 /* Beacon doesn't work as mac80211 doesn't currently allow
4422  * it, but it wouldn't really be the right thing anyway as
4423  * it isn't per interface ... maybe just dump the scan
4424  * results periodically for OLBC?
4425  */
4426 //              WLAN_FC_STYPE_BEACON,
4427         };
4428         unsigned int i;
4429
4430         if (nl80211_alloc_mgmt_handle(bss))
4431                 return -1;
4432         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
4433                    "handle %p", bss->nl_mgmt);
4434
4435         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
4436                 if (nl80211_register_frame(bss, bss->nl_mgmt,
4437                                            (WLAN_FC_TYPE_MGMT << 2) |
4438                                            (stypes[i] << 4),
4439                                            NULL, 0) < 0) {
4440                         goto out_err;
4441                 }
4442         }
4443
4444         if (nl80211_register_spurious_class3(bss))
4445                 goto out_err;
4446
4447         if (nl80211_get_wiphy_data_ap(bss) == NULL)
4448                 goto out_err;
4449
4450         nl80211_mgmt_handle_register_eloop(bss);
4451         return 0;
4452
4453 out_err:
4454         nl_destroy_handles(&bss->nl_mgmt);
4455         return -1;
4456 }
4457
4458
4459 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
4460 {
4461         if (nl80211_alloc_mgmt_handle(bss))
4462                 return -1;
4463         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
4464                    "handle %p (device SME)", bss->nl_mgmt);
4465
4466         if (nl80211_register_frame(bss, bss->nl_mgmt,
4467                                    (WLAN_FC_TYPE_MGMT << 2) |
4468                                    (WLAN_FC_STYPE_ACTION << 4),
4469                                    NULL, 0) < 0)
4470                 goto out_err;
4471
4472         nl80211_mgmt_handle_register_eloop(bss);
4473         return 0;
4474
4475 out_err:
4476         nl_destroy_handles(&bss->nl_mgmt);
4477         return -1;
4478 }
4479
4480
4481 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
4482 {
4483         if (bss->nl_mgmt == NULL)
4484                 return;
4485         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
4486                    "(%s)", bss->nl_mgmt, reason);
4487         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
4488
4489         nl80211_put_wiphy_data_ap(bss);
4490 }
4491
4492
4493 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
4494 {
4495         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
4496 }
4497
4498
4499 static void nl80211_del_p2pdev(struct i802_bss *bss)
4500 {
4501         struct wpa_driver_nl80211_data *drv = bss->drv;
4502         struct nl_msg *msg;
4503         int ret;
4504
4505         msg = nlmsg_alloc();
4506         if (!msg)
4507                 return;
4508
4509         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
4510         NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
4511
4512         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4513         msg = NULL;
4514
4515         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
4516                    bss->ifname, (long long unsigned int) bss->wdev_id,
4517                    strerror(-ret));
4518
4519 nla_put_failure:
4520         nlmsg_free(msg);
4521 }
4522
4523
4524 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
4525 {
4526         struct wpa_driver_nl80211_data *drv = bss->drv;
4527         struct nl_msg *msg;
4528         int ret = -1;
4529
4530         msg = nlmsg_alloc();
4531         if (!msg)
4532                 return -1;
4533
4534         if (start)
4535                 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_P2P_DEVICE);
4536         else
4537                 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_P2P_DEVICE);
4538
4539         NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
4540
4541         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4542         msg = NULL;
4543
4544         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
4545                    start ? "Start" : "Stop",
4546                    bss->ifname, (long long unsigned int) bss->wdev_id,
4547                    strerror(-ret));
4548
4549 nla_put_failure:
4550         nlmsg_free(msg);
4551         return ret;
4552 }
4553
4554
4555 static int i802_set_iface_flags(struct i802_bss *bss, int up)
4556 {
4557         enum nl80211_iftype nlmode;
4558
4559         nlmode = nl80211_get_ifmode(bss);
4560         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
4561                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
4562                                              bss->ifname, up);
4563         }
4564
4565         /* P2P Device has start/stop which is equivalent */
4566         return nl80211_set_p2pdev(bss, up);
4567 }
4568
4569
4570 static int
4571 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
4572                                    const u8 *set_addr, int first)
4573 {
4574         struct i802_bss *bss = drv->first_bss;
4575         int send_rfkill_event = 0;
4576         enum nl80211_iftype nlmode;
4577
4578         drv->ifindex = if_nametoindex(bss->ifname);
4579         bss->ifindex = drv->ifindex;
4580         bss->wdev_id = drv->global->if_add_wdevid;
4581         bss->wdev_id_set = drv->global->if_add_wdevid_set;
4582
4583         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
4584         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
4585         drv->global->if_add_wdevid_set = 0;
4586
4587         if (wpa_driver_nl80211_capa(drv))
4588                 return -1;
4589
4590         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
4591                    bss->ifname, drv->phyname);
4592
4593         if (set_addr &&
4594             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
4595              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
4596                                 set_addr)))
4597                 return -1;
4598
4599         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
4600                 drv->start_mode_ap = 1;
4601
4602         if (drv->hostapd)
4603                 nlmode = NL80211_IFTYPE_AP;
4604         else if (bss->if_dynamic)
4605                 nlmode = nl80211_get_ifmode(bss);
4606         else
4607                 nlmode = NL80211_IFTYPE_STATION;
4608
4609         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
4610                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
4611                 return -1;
4612         }
4613
4614         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
4615                 int ret = nl80211_set_p2pdev(bss, 1);
4616                 if (ret < 0)
4617                         wpa_printf(MSG_ERROR, "nl80211: Could not start P2P device");
4618                 nl80211_get_macaddr(bss);
4619                 return ret;
4620         }
4621
4622         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
4623                 if (rfkill_is_blocked(drv->rfkill)) {
4624                         wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
4625                                    "interface '%s' due to rfkill",
4626                                    bss->ifname);
4627                         drv->if_disabled = 1;
4628                         send_rfkill_event = 1;
4629                 } else {
4630                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
4631                                    "interface '%s' UP", bss->ifname);
4632                         return -1;
4633                 }
4634         }
4635
4636         if (!drv->hostapd)
4637                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
4638                                        1, IF_OPER_DORMANT);
4639
4640         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
4641                                bss->addr))
4642                 return -1;
4643
4644         if (send_rfkill_event) {
4645                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
4646                                        drv, drv->ctx);
4647         }
4648
4649         return 0;
4650 }
4651
4652
4653 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
4654 {
4655         struct nl_msg *msg;
4656
4657         msg = nlmsg_alloc();
4658         if (!msg)
4659                 return -ENOMEM;
4660
4661         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
4662                    drv->ifindex);
4663         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
4664         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4665
4666         return send_and_recv_msgs(drv, msg, NULL, NULL);
4667  nla_put_failure:
4668         nlmsg_free(msg);
4669         return -ENOBUFS;
4670 }
4671
4672
4673 /**
4674  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
4675  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
4676  *
4677  * Shut down driver interface and processing of driver events. Free
4678  * private data buffer if one was allocated in wpa_driver_nl80211_init().
4679  */
4680 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
4681 {
4682         struct wpa_driver_nl80211_data *drv = bss->drv;
4683
4684         bss->in_deinit = 1;
4685         if (drv->data_tx_status)
4686                 eloop_unregister_read_sock(drv->eapol_tx_sock);
4687         if (drv->eapol_tx_sock >= 0)
4688                 close(drv->eapol_tx_sock);
4689
4690         if (bss->nl_preq)
4691                 wpa_driver_nl80211_probe_req_report(bss, 0);
4692         if (bss->added_if_into_bridge) {
4693                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
4694                                     bss->ifname) < 0)
4695                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
4696                                    "interface %s from bridge %s: %s",
4697                                    bss->ifname, bss->brname, strerror(errno));
4698         }
4699         if (bss->added_bridge) {
4700                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
4701                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
4702                                    "bridge %s: %s",
4703                                    bss->brname, strerror(errno));
4704         }
4705
4706         nl80211_remove_monitor_interface(drv);
4707
4708         if (is_ap_interface(drv->nlmode))
4709                 wpa_driver_nl80211_del_beacon(drv);
4710
4711         if (drv->eapol_sock >= 0) {
4712                 eloop_unregister_read_sock(drv->eapol_sock);
4713                 close(drv->eapol_sock);
4714         }
4715
4716         if (drv->if_indices != drv->default_if_indices)
4717                 os_free(drv->if_indices);
4718
4719         if (drv->disabled_11b_rates)
4720                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4721
4722         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
4723                                IF_OPER_UP);
4724         rfkill_deinit(drv->rfkill);
4725
4726         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
4727
4728         if (!drv->start_iface_up)
4729                 (void) i802_set_iface_flags(bss, 0);
4730         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
4731                 if (!drv->hostapd || !drv->start_mode_ap)
4732                         wpa_driver_nl80211_set_mode(bss,
4733                                                     NL80211_IFTYPE_STATION);
4734                 nl80211_mgmt_unsubscribe(bss, "deinit");
4735         } else {
4736                 nl80211_mgmt_unsubscribe(bss, "deinit");
4737                 nl80211_del_p2pdev(bss);
4738         }
4739         nl_cb_put(drv->nl_cb);
4740
4741         nl80211_destroy_bss(drv->first_bss);
4742
4743         os_free(drv->filter_ssids);
4744
4745         os_free(drv->auth_ie);
4746
4747         if (drv->in_interface_list)
4748                 dl_list_del(&drv->list);
4749
4750         os_free(drv->extended_capa);
4751         os_free(drv->extended_capa_mask);
4752         os_free(drv->first_bss);
4753         os_free(drv);
4754 }
4755
4756
4757 /**
4758  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
4759  * @eloop_ctx: Driver private data
4760  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
4761  *
4762  * This function can be used as registered timeout when starting a scan to
4763  * generate a scan completed event if the driver does not report this.
4764  */
4765 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
4766 {
4767         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4768         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
4769                 wpa_driver_nl80211_set_mode(drv->first_bss,
4770                                             drv->ap_scan_as_station);
4771                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
4772         }
4773         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
4774         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
4775 }
4776
4777
4778 static struct nl_msg *
4779 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
4780                     struct wpa_driver_scan_params *params, u64 *wdev_id)
4781 {
4782         struct nl_msg *msg;
4783         size_t i;
4784
4785         msg = nlmsg_alloc();
4786         if (!msg)
4787                 return NULL;
4788
4789         nl80211_cmd(drv, msg, 0, cmd);
4790
4791         if (!wdev_id)
4792                 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4793         else
4794                 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, *wdev_id);
4795
4796         if (params->num_ssids) {
4797                 struct nlattr *ssids;
4798
4799                 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
4800                 if (ssids == NULL)
4801                         goto fail;
4802                 for (i = 0; i < params->num_ssids; i++) {
4803                         wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
4804                                           params->ssids[i].ssid,
4805                                           params->ssids[i].ssid_len);
4806                         if (nla_put(msg, i + 1, params->ssids[i].ssid_len,
4807                                     params->ssids[i].ssid) < 0)
4808                                 goto fail;
4809                 }
4810                 nla_nest_end(msg, ssids);
4811         }
4812
4813         if (params->extra_ies) {
4814                 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
4815                             params->extra_ies, params->extra_ies_len);
4816                 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
4817                             params->extra_ies) < 0)
4818                         goto fail;
4819         }
4820
4821         if (params->freqs) {
4822                 struct nlattr *freqs;
4823                 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
4824                 if (freqs == NULL)
4825                         goto fail;
4826                 for (i = 0; params->freqs[i]; i++) {
4827                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
4828                                    "MHz", params->freqs[i]);
4829                         if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0)
4830                                 goto fail;
4831                 }
4832                 nla_nest_end(msg, freqs);
4833         }
4834
4835         os_free(drv->filter_ssids);
4836         drv->filter_ssids = params->filter_ssids;
4837         params->filter_ssids = NULL;
4838         drv->num_filter_ssids = params->num_filter_ssids;
4839
4840         if (params->only_new_results) {
4841                 wpa_printf(MSG_DEBUG, "nl80211: Add NL80211_SCAN_FLAG_FLUSH");
4842                 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_FLAGS,
4843                             NL80211_SCAN_FLAG_FLUSH);
4844         }
4845
4846         return msg;
4847
4848 fail:
4849 nla_put_failure:
4850         nlmsg_free(msg);
4851         return NULL;
4852 }
4853
4854
4855 /**
4856  * wpa_driver_nl80211_scan - Request the driver to initiate scan
4857  * @bss: Pointer to private driver data from wpa_driver_nl80211_init()
4858  * @params: Scan parameters
4859  * Returns: 0 on success, -1 on failure
4860  */
4861 static int wpa_driver_nl80211_scan(struct i802_bss *bss,
4862                                    struct wpa_driver_scan_params *params)
4863 {
4864         struct wpa_driver_nl80211_data *drv = bss->drv;
4865         int ret = -1, timeout;
4866         struct nl_msg *msg = NULL;
4867
4868         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request");
4869         drv->scan_for_auth = 0;
4870
4871         msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params,
4872                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
4873         if (!msg)
4874                 return -1;
4875
4876         if (params->p2p_probe) {
4877                 struct nlattr *rates;
4878
4879                 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
4880
4881                 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES);
4882                 if (rates == NULL)
4883                         goto nla_put_failure;
4884
4885                 /*
4886                  * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
4887                  * by masking out everything else apart from the OFDM rates 6,
4888                  * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
4889                  * rates are left enabled.
4890                  */
4891                 NLA_PUT(msg, NL80211_BAND_2GHZ, 8,
4892                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
4893                 nla_nest_end(msg, rates);
4894
4895                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
4896         }
4897
4898         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4899         msg = NULL;
4900         if (ret) {
4901                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
4902                            "(%s)", ret, strerror(-ret));
4903                 if (drv->hostapd && is_ap_interface(drv->nlmode)) {
4904                         /*
4905                          * mac80211 does not allow scan requests in AP mode, so
4906                          * try to do this in station mode.
4907                          */
4908                         if (wpa_driver_nl80211_set_mode(
4909                                     bss, NL80211_IFTYPE_STATION))
4910                                 goto nla_put_failure;
4911
4912                         if (wpa_driver_nl80211_scan(bss, params)) {
4913                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
4914                                 goto nla_put_failure;
4915                         }
4916
4917                         /* Restore AP mode when processing scan results */
4918                         drv->ap_scan_as_station = drv->nlmode;
4919                         ret = 0;
4920                 } else
4921                         goto nla_put_failure;
4922         }
4923
4924         drv->scan_state = SCAN_REQUESTED;
4925         /* Not all drivers generate "scan completed" wireless event, so try to
4926          * read results after a timeout. */
4927         timeout = 10;
4928         if (drv->scan_complete_events) {
4929                 /*
4930                  * The driver seems to deliver events to notify when scan is
4931                  * complete, so use longer timeout to avoid race conditions
4932                  * with scanning and following association request.
4933                  */
4934                 timeout = 30;
4935         }
4936         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
4937                    "seconds", ret, timeout);
4938         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
4939         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
4940                                drv, drv->ctx);
4941
4942 nla_put_failure:
4943         nlmsg_free(msg);
4944         return ret;
4945 }
4946
4947
4948 /**
4949  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
4950  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
4951  * @params: Scan parameters
4952  * @interval: Interval between scan cycles in milliseconds
4953  * Returns: 0 on success, -1 on failure or if not supported
4954  */
4955 static int wpa_driver_nl80211_sched_scan(void *priv,
4956                                          struct wpa_driver_scan_params *params,
4957                                          u32 interval)
4958 {
4959         struct i802_bss *bss = priv;
4960         struct wpa_driver_nl80211_data *drv = bss->drv;
4961         int ret = -1;
4962         struct nl_msg *msg;
4963         size_t i;
4964
4965         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request");
4966
4967 #ifdef ANDROID
4968         if (!drv->capa.sched_scan_supported)
4969                 return android_pno_start(bss, params);
4970 #endif /* ANDROID */
4971
4972         msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params,
4973                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
4974         if (!msg)
4975                 goto nla_put_failure;
4976
4977         NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
4978
4979         if ((drv->num_filter_ssids &&
4980             (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
4981             params->filter_rssi) {
4982                 struct nlattr *match_sets;
4983                 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
4984                 if (match_sets == NULL)
4985                         goto nla_put_failure;
4986
4987                 for (i = 0; i < drv->num_filter_ssids; i++) {
4988                         struct nlattr *match_set_ssid;
4989                         wpa_hexdump_ascii(MSG_MSGDUMP,
4990                                           "nl80211: Sched scan filter SSID",
4991                                           drv->filter_ssids[i].ssid,
4992                                           drv->filter_ssids[i].ssid_len);
4993
4994                         match_set_ssid = nla_nest_start(msg, i + 1);
4995                         if (match_set_ssid == NULL)
4996                                 goto nla_put_failure;
4997                         NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
4998                                 drv->filter_ssids[i].ssid_len,
4999                                 drv->filter_ssids[i].ssid);
5000                         if (params->filter_rssi)
5001                                 NLA_PUT_U32(msg,
5002                                             NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
5003                                             params->filter_rssi);
5004
5005                         nla_nest_end(msg, match_set_ssid);
5006                 }
5007
5008                 /*
5009                  * Due to backward compatibility code, newer kernels treat this
5010                  * matchset (with only an RSSI filter) as the default for all
5011                  * other matchsets, unless it's the only one, in which case the
5012                  * matchset will actually allow all SSIDs above the RSSI.
5013                  */
5014                 if (params->filter_rssi) {
5015                         struct nlattr *match_set_rssi;
5016                         match_set_rssi = nla_nest_start(msg, 0);
5017                         if (match_set_rssi == NULL)
5018                                 goto nla_put_failure;
5019                         NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
5020                                     params->filter_rssi);
5021                         wpa_printf(MSG_MSGDUMP,
5022                                    "nl80211: Sched scan RSSI filter %d dBm",
5023                                    params->filter_rssi);
5024                         nla_nest_end(msg, match_set_rssi);
5025                 }
5026
5027                 nla_nest_end(msg, match_sets);
5028         }
5029
5030         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5031
5032         /* TODO: if we get an error here, we should fall back to normal scan */
5033
5034         msg = NULL;
5035         if (ret) {
5036                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
5037                            "ret=%d (%s)", ret, strerror(-ret));
5038                 goto nla_put_failure;
5039         }
5040
5041         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
5042                    "scan interval %d msec", ret, interval);
5043
5044 nla_put_failure:
5045         nlmsg_free(msg);
5046         return ret;
5047 }
5048
5049
5050 /**
5051  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
5052  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
5053  * Returns: 0 on success, -1 on failure or if not supported
5054  */
5055 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
5056 {
5057         struct i802_bss *bss = priv;
5058         struct wpa_driver_nl80211_data *drv = bss->drv;
5059         int ret = 0;
5060         struct nl_msg *msg;
5061
5062 #ifdef ANDROID
5063         if (!drv->capa.sched_scan_supported)
5064                 return android_pno_stop(bss);
5065 #endif /* ANDROID */
5066
5067         msg = nlmsg_alloc();
5068         if (!msg)
5069                 return -1;
5070
5071         nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
5072
5073         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5074
5075         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5076         msg = NULL;
5077         if (ret) {
5078                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
5079                            "ret=%d (%s)", ret, strerror(-ret));
5080                 goto nla_put_failure;
5081         }
5082
5083         wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
5084
5085 nla_put_failure:
5086         nlmsg_free(msg);
5087         return ret;
5088 }
5089
5090
5091 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
5092 {
5093         const u8 *end, *pos;
5094
5095         if (ies == NULL)
5096                 return NULL;
5097
5098         pos = ies;
5099         end = ies + ies_len;
5100
5101         while (pos + 1 < end) {
5102                 if (pos + 2 + pos[1] > end)
5103                         break;
5104                 if (pos[0] == ie)
5105                         return pos;
5106                 pos += 2 + pos[1];
5107         }
5108
5109         return NULL;
5110 }
5111
5112
5113 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
5114                                  const u8 *ie, size_t ie_len)
5115 {
5116         const u8 *ssid;
5117         size_t i;
5118
5119         if (drv->filter_ssids == NULL)
5120                 return 0;
5121
5122         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
5123         if (ssid == NULL)
5124                 return 1;
5125
5126         for (i = 0; i < drv->num_filter_ssids; i++) {
5127                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
5128                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
5129                     0)
5130                         return 0;
5131         }
5132
5133         return 1;
5134 }
5135
5136
5137 static int bss_info_handler(struct nl_msg *msg, void *arg)
5138 {
5139         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5140         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5141         struct nlattr *bss[NL80211_BSS_MAX + 1];
5142         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
5143                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
5144                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
5145                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
5146                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
5147                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
5148                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
5149                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
5150                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
5151                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
5152                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
5153                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
5154         };
5155         struct nl80211_bss_info_arg *_arg = arg;
5156         struct wpa_scan_results *res = _arg->res;
5157         struct wpa_scan_res **tmp;
5158         struct wpa_scan_res *r;
5159         const u8 *ie, *beacon_ie;
5160         size_t ie_len, beacon_ie_len;
5161         u8 *pos;
5162         size_t i;
5163
5164         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5165                   genlmsg_attrlen(gnlh, 0), NULL);
5166         if (!tb[NL80211_ATTR_BSS])
5167                 return NL_SKIP;
5168         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
5169                              bss_policy))
5170                 return NL_SKIP;
5171         if (bss[NL80211_BSS_STATUS]) {
5172                 enum nl80211_bss_status status;
5173                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
5174                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
5175                     bss[NL80211_BSS_FREQUENCY]) {
5176                         _arg->assoc_freq =
5177                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
5178                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
5179                                    _arg->assoc_freq);
5180                 }
5181                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
5182                     bss[NL80211_BSS_BSSID]) {
5183                         os_memcpy(_arg->assoc_bssid,
5184                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
5185                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
5186                                    MACSTR, MAC2STR(_arg->assoc_bssid));
5187                 }
5188         }
5189         if (!res)
5190                 return NL_SKIP;
5191         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
5192                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
5193                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
5194         } else {
5195                 ie = NULL;
5196                 ie_len = 0;
5197         }
5198         if (bss[NL80211_BSS_BEACON_IES]) {
5199                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
5200                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
5201         } else {
5202                 beacon_ie = NULL;
5203                 beacon_ie_len = 0;
5204         }
5205
5206         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
5207                                   ie ? ie_len : beacon_ie_len))
5208                 return NL_SKIP;
5209
5210         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
5211         if (r == NULL)
5212                 return NL_SKIP;
5213         if (bss[NL80211_BSS_BSSID])
5214                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
5215                           ETH_ALEN);
5216         if (bss[NL80211_BSS_FREQUENCY])
5217                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
5218         if (bss[NL80211_BSS_BEACON_INTERVAL])
5219                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
5220         if (bss[NL80211_BSS_CAPABILITY])
5221                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
5222         r->flags |= WPA_SCAN_NOISE_INVALID;
5223         if (bss[NL80211_BSS_SIGNAL_MBM]) {
5224                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
5225                 r->level /= 100; /* mBm to dBm */
5226                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
5227         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
5228                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
5229                 r->flags |= WPA_SCAN_QUAL_INVALID;
5230         } else
5231                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
5232         if (bss[NL80211_BSS_TSF])
5233                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
5234         if (bss[NL80211_BSS_SEEN_MS_AGO])
5235                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
5236         r->ie_len = ie_len;
5237         pos = (u8 *) (r + 1);
5238         if (ie) {
5239                 os_memcpy(pos, ie, ie_len);
5240                 pos += ie_len;
5241         }
5242         r->beacon_ie_len = beacon_ie_len;
5243         if (beacon_ie)
5244                 os_memcpy(pos, beacon_ie, beacon_ie_len);
5245
5246         if (bss[NL80211_BSS_STATUS]) {
5247                 enum nl80211_bss_status status;
5248                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
5249                 switch (status) {
5250                 case NL80211_BSS_STATUS_AUTHENTICATED:
5251                         r->flags |= WPA_SCAN_AUTHENTICATED;
5252                         break;
5253                 case NL80211_BSS_STATUS_ASSOCIATED:
5254                         r->flags |= WPA_SCAN_ASSOCIATED;
5255                         break;
5256                 default:
5257                         break;
5258                 }
5259         }
5260
5261         /*
5262          * cfg80211 maintains separate BSS table entries for APs if the same
5263          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
5264          * not use frequency as a separate key in the BSS table, so filter out
5265          * duplicated entries. Prefer associated BSS entry in such a case in
5266          * order to get the correct frequency into the BSS table. Similarly,
5267          * prefer newer entries over older.
5268          */
5269         for (i = 0; i < res->num; i++) {
5270                 const u8 *s1, *s2;
5271                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
5272                         continue;
5273
5274                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
5275                                     res->res[i]->ie_len, WLAN_EID_SSID);
5276                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
5277                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
5278                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
5279                         continue;
5280
5281                 /* Same BSSID,SSID was already included in scan results */
5282                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
5283                            "for " MACSTR, MAC2STR(r->bssid));
5284
5285                 if (((r->flags & WPA_SCAN_ASSOCIATED) &&
5286                      !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) ||
5287                     r->age < res->res[i]->age) {
5288                         os_free(res->res[i]);
5289                         res->res[i] = r;
5290                 } else
5291                         os_free(r);
5292                 return NL_SKIP;
5293         }
5294
5295         tmp = os_realloc_array(res->res, res->num + 1,
5296                                sizeof(struct wpa_scan_res *));
5297         if (tmp == NULL) {
5298                 os_free(r);
5299                 return NL_SKIP;
5300         }
5301         tmp[res->num++] = r;
5302         res->res = tmp;
5303
5304         return NL_SKIP;
5305 }
5306
5307
5308 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
5309                                  const u8 *addr)
5310 {
5311         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
5312                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
5313                            "mismatch (" MACSTR ")", MAC2STR(addr));
5314                 wpa_driver_nl80211_mlme(drv, addr,
5315                                         NL80211_CMD_DEAUTHENTICATE,
5316                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
5317         }
5318 }
5319
5320
5321 static void wpa_driver_nl80211_check_bss_status(
5322         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
5323 {
5324         size_t i;
5325
5326         for (i = 0; i < res->num; i++) {
5327                 struct wpa_scan_res *r = res->res[i];
5328                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
5329                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
5330                                    "indicates BSS status with " MACSTR
5331                                    " as authenticated",
5332                                    MAC2STR(r->bssid));
5333                         if (is_sta_interface(drv->nlmode) &&
5334                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
5335                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
5336                             0) {
5337                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
5338                                            " in local state (auth=" MACSTR
5339                                            " assoc=" MACSTR ")",
5340                                            MAC2STR(drv->auth_bssid),
5341                                            MAC2STR(drv->bssid));
5342                                 clear_state_mismatch(drv, r->bssid);
5343                         }
5344                 }
5345
5346                 if (r->flags & WPA_SCAN_ASSOCIATED) {
5347                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
5348                                    "indicate BSS status with " MACSTR
5349                                    " as associated",
5350                                    MAC2STR(r->bssid));
5351                         if (is_sta_interface(drv->nlmode) &&
5352                             !drv->associated) {
5353                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
5354                                            "(not associated) does not match "
5355                                            "with BSS state");
5356                                 clear_state_mismatch(drv, r->bssid);
5357                         } else if (is_sta_interface(drv->nlmode) &&
5358                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
5359                                    0) {
5360                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
5361                                            "(associated with " MACSTR ") does "
5362                                            "not match with BSS state",
5363                                            MAC2STR(drv->bssid));
5364                                 clear_state_mismatch(drv, r->bssid);
5365                                 clear_state_mismatch(drv, drv->bssid);
5366                         }
5367                 }
5368         }
5369 }
5370
5371
5372 static struct wpa_scan_results *
5373 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
5374 {
5375         struct nl_msg *msg;
5376         struct wpa_scan_results *res;
5377         int ret;
5378         struct nl80211_bss_info_arg arg;
5379
5380         res = os_zalloc(sizeof(*res));
5381         if (res == NULL)
5382                 return NULL;
5383         msg = nlmsg_alloc();
5384         if (!msg)
5385                 goto nla_put_failure;
5386
5387         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
5388         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
5389                 goto nla_put_failure;
5390
5391         arg.drv = drv;
5392         arg.res = res;
5393         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
5394         msg = NULL;
5395         if (ret == 0) {
5396                 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
5397                            "BSSes)", (unsigned long) res->num);
5398                 nl80211_get_noise_for_scan_results(drv, res);
5399                 return res;
5400         }
5401         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
5402                    "(%s)", ret, strerror(-ret));
5403 nla_put_failure:
5404         nlmsg_free(msg);
5405         wpa_scan_results_free(res);
5406         return NULL;
5407 }
5408
5409
5410 /**
5411  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
5412  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
5413  * Returns: Scan results on success, -1 on failure
5414  */
5415 static struct wpa_scan_results *
5416 wpa_driver_nl80211_get_scan_results(void *priv)
5417 {
5418         struct i802_bss *bss = priv;
5419         struct wpa_driver_nl80211_data *drv = bss->drv;
5420         struct wpa_scan_results *res;
5421
5422         res = nl80211_get_scan_results(drv);
5423         if (res)
5424                 wpa_driver_nl80211_check_bss_status(drv, res);
5425         return res;
5426 }
5427
5428
5429 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
5430 {
5431         struct wpa_scan_results *res;
5432         size_t i;
5433
5434         res = nl80211_get_scan_results(drv);
5435         if (res == NULL) {
5436                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
5437                 return;
5438         }
5439
5440         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
5441         for (i = 0; i < res->num; i++) {
5442                 struct wpa_scan_res *r = res->res[i];
5443                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
5444                            (int) i, (int) res->num, MAC2STR(r->bssid),
5445                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
5446                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
5447         }
5448
5449         wpa_scan_results_free(res);
5450 }
5451
5452
5453 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
5454 {
5455         switch (alg) {
5456         case WPA_ALG_WEP:
5457                 if (key_len == 5)
5458                         return WLAN_CIPHER_SUITE_WEP40;
5459                 return WLAN_CIPHER_SUITE_WEP104;
5460         case WPA_ALG_TKIP:
5461                 return WLAN_CIPHER_SUITE_TKIP;
5462         case WPA_ALG_CCMP:
5463                 return WLAN_CIPHER_SUITE_CCMP;
5464         case WPA_ALG_GCMP:
5465                 return WLAN_CIPHER_SUITE_GCMP;
5466         case WPA_ALG_CCMP_256:
5467                 return WLAN_CIPHER_SUITE_CCMP_256;
5468         case WPA_ALG_GCMP_256:
5469                 return WLAN_CIPHER_SUITE_GCMP_256;
5470         case WPA_ALG_IGTK:
5471                 return WLAN_CIPHER_SUITE_AES_CMAC;
5472         case WPA_ALG_BIP_GMAC_128:
5473                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
5474         case WPA_ALG_BIP_GMAC_256:
5475                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
5476         case WPA_ALG_BIP_CMAC_256:
5477                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
5478         case WPA_ALG_SMS4:
5479                 return WLAN_CIPHER_SUITE_SMS4;
5480         case WPA_ALG_KRK:
5481                 return WLAN_CIPHER_SUITE_KRK;
5482         case WPA_ALG_NONE:
5483         case WPA_ALG_PMK:
5484                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
5485                            alg);
5486                 return 0;
5487         }
5488
5489         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
5490                    alg);
5491         return 0;
5492 }
5493
5494
5495 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
5496 {
5497         switch (cipher) {
5498         case WPA_CIPHER_CCMP_256:
5499                 return WLAN_CIPHER_SUITE_CCMP_256;
5500         case WPA_CIPHER_GCMP_256:
5501                 return WLAN_CIPHER_SUITE_GCMP_256;
5502         case WPA_CIPHER_CCMP:
5503                 return WLAN_CIPHER_SUITE_CCMP;
5504         case WPA_CIPHER_GCMP:
5505                 return WLAN_CIPHER_SUITE_GCMP;
5506         case WPA_CIPHER_TKIP:
5507                 return WLAN_CIPHER_SUITE_TKIP;
5508         case WPA_CIPHER_WEP104:
5509                 return WLAN_CIPHER_SUITE_WEP104;
5510         case WPA_CIPHER_WEP40:
5511                 return WLAN_CIPHER_SUITE_WEP40;
5512         }
5513
5514         return 0;
5515 }
5516
5517
5518 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
5519                                        int max_suites)
5520 {
5521         int num_suites = 0;
5522
5523         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
5524                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
5525         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
5526                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
5527         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
5528                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
5529         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
5530                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
5531         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
5532                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
5533         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
5534                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
5535         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
5536                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
5537
5538         return num_suites;
5539 }
5540
5541
5542 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
5543                                       enum wpa_alg alg, const u8 *addr,
5544                                       int key_idx, int set_tx,
5545                                       const u8 *seq, size_t seq_len,
5546                                       const u8 *key, size_t key_len)
5547 {
5548         struct wpa_driver_nl80211_data *drv = bss->drv;
5549         int ifindex;
5550         struct nl_msg *msg;
5551         int ret;
5552         int tdls = 0;
5553
5554         /* Ignore for P2P Device */
5555         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
5556                 return 0;
5557
5558         ifindex = if_nametoindex(ifname);
5559         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
5560                    "set_tx=%d seq_len=%lu key_len=%lu",
5561                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
5562                    (unsigned long) seq_len, (unsigned long) key_len);
5563 #ifdef CONFIG_TDLS
5564         if (key_idx == -1) {
5565                 key_idx = 0;
5566                 tdls = 1;
5567         }
5568 #endif /* CONFIG_TDLS */
5569
5570         msg = nlmsg_alloc();
5571         if (!msg)
5572                 return -ENOMEM;
5573
5574         if (alg == WPA_ALG_NONE) {
5575                 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
5576         } else {
5577                 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
5578                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
5579                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
5580                             wpa_alg_to_cipher_suite(alg, key_len));
5581         }
5582
5583         if (seq && seq_len)
5584                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
5585
5586         if (addr && !is_broadcast_ether_addr(addr)) {
5587                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
5588                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5589
5590                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
5591                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
5592                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
5593                                     NL80211_KEYTYPE_GROUP);
5594                 }
5595         } else if (addr && is_broadcast_ether_addr(addr)) {
5596                 struct nlattr *types;
5597
5598                 wpa_printf(MSG_DEBUG, "   broadcast key");
5599
5600                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
5601                 if (!types)
5602                         goto nla_put_failure;
5603                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
5604                 nla_nest_end(msg, types);
5605         }
5606         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
5607         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5608
5609         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5610         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
5611                 ret = 0;
5612         if (ret)
5613                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
5614                            ret, strerror(-ret));
5615
5616         /*
5617          * If we failed or don't need to set the default TX key (below),
5618          * we're done here.
5619          */
5620         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
5621                 return ret;
5622         if (is_ap_interface(drv->nlmode) && addr &&
5623             !is_broadcast_ether_addr(addr))
5624                 return ret;
5625
5626         msg = nlmsg_alloc();
5627         if (!msg)
5628                 return -ENOMEM;
5629
5630         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
5631         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
5632         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5633         if (alg == WPA_ALG_IGTK)
5634                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
5635         else
5636                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
5637         if (addr && is_broadcast_ether_addr(addr)) {
5638                 struct nlattr *types;
5639
5640                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
5641                 if (!types)
5642                         goto nla_put_failure;
5643                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
5644                 nla_nest_end(msg, types);
5645         } else if (addr) {
5646                 struct nlattr *types;
5647
5648                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
5649                 if (!types)
5650                         goto nla_put_failure;
5651                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST);
5652                 nla_nest_end(msg, types);
5653         }
5654
5655         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5656         if (ret == -ENOENT)
5657                 ret = 0;
5658         if (ret)
5659                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
5660                            "err=%d %s)", ret, strerror(-ret));
5661         return ret;
5662
5663 nla_put_failure:
5664         nlmsg_free(msg);
5665         return -ENOBUFS;
5666 }
5667
5668
5669 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
5670                       int key_idx, int defkey,
5671                       const u8 *seq, size_t seq_len,
5672                       const u8 *key, size_t key_len)
5673 {
5674         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
5675         if (!key_attr)
5676                 return -1;
5677
5678         if (defkey && alg == WPA_ALG_IGTK)
5679                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
5680         else if (defkey)
5681                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
5682
5683         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
5684
5685         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
5686                     wpa_alg_to_cipher_suite(alg, key_len));
5687
5688         if (seq && seq_len)
5689                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
5690
5691         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
5692
5693         nla_nest_end(msg, key_attr);
5694
5695         return 0;
5696  nla_put_failure:
5697         return -1;
5698 }
5699
5700
5701 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
5702                                  struct nl_msg *msg)
5703 {
5704         int i, privacy = 0;
5705         struct nlattr *nl_keys, *nl_key;
5706
5707         for (i = 0; i < 4; i++) {
5708                 if (!params->wep_key[i])
5709                         continue;
5710                 privacy = 1;
5711                 break;
5712         }
5713         if (params->wps == WPS_MODE_PRIVACY)
5714                 privacy = 1;
5715         if (params->pairwise_suite &&
5716             params->pairwise_suite != WPA_CIPHER_NONE)
5717                 privacy = 1;
5718
5719         if (!privacy)
5720                 return 0;
5721
5722         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
5723
5724         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
5725         if (!nl_keys)
5726                 goto nla_put_failure;
5727
5728         for (i = 0; i < 4; i++) {
5729                 if (!params->wep_key[i])
5730                         continue;
5731
5732                 nl_key = nla_nest_start(msg, i);
5733                 if (!nl_key)
5734                         goto nla_put_failure;
5735
5736                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
5737                         params->wep_key[i]);
5738                 if (params->wep_key_len[i] == 5)
5739                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
5740                                     WLAN_CIPHER_SUITE_WEP40);
5741                 else
5742                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
5743                                     WLAN_CIPHER_SUITE_WEP104);
5744
5745                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
5746
5747                 if (i == params->wep_tx_keyidx)
5748                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
5749
5750                 nla_nest_end(msg, nl_key);
5751         }
5752         nla_nest_end(msg, nl_keys);
5753
5754         return 0;
5755
5756 nla_put_failure:
5757         return -ENOBUFS;
5758 }
5759
5760
5761 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
5762                                    const u8 *addr, int cmd, u16 reason_code,
5763                                    int local_state_change)
5764 {
5765         int ret = -1;
5766         struct nl_msg *msg;
5767
5768         msg = nlmsg_alloc();
5769         if (!msg)
5770                 return -1;
5771
5772         nl80211_cmd(drv, msg, 0, cmd);
5773
5774         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5775         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
5776         if (addr)
5777                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5778         if (local_state_change)
5779                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
5780
5781         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5782         msg = NULL;
5783         if (ret) {
5784                 wpa_dbg(drv->ctx, MSG_DEBUG,
5785                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
5786                         reason_code, ret, strerror(-ret));
5787                 goto nla_put_failure;
5788         }
5789         ret = 0;
5790
5791 nla_put_failure:
5792         nlmsg_free(msg);
5793         return ret;
5794 }
5795
5796
5797 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
5798                                          int reason_code)
5799 {
5800         int ret;
5801
5802         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
5803         nl80211_mark_disconnected(drv);
5804         /* Disconnect command doesn't need BSSID - it uses cached value */
5805         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
5806                                       reason_code, 0);
5807         /*
5808          * For locally generated disconnect, supplicant already generates a
5809          * DEAUTH event, so ignore the event from NL80211.
5810          */
5811         drv->ignore_next_local_disconnect = ret == 0;
5812
5813         return ret;
5814 }
5815
5816
5817 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
5818                                              const u8 *addr, int reason_code)
5819 {
5820         struct wpa_driver_nl80211_data *drv = bss->drv;
5821         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
5822                 return wpa_driver_nl80211_disconnect(drv, reason_code);
5823         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
5824                    __func__, MAC2STR(addr), reason_code);
5825         nl80211_mark_disconnected(drv);
5826         if (drv->nlmode == NL80211_IFTYPE_ADHOC)
5827                 return nl80211_leave_ibss(drv);
5828         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
5829                                        reason_code, 0);
5830 }
5831
5832
5833 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
5834                                      struct wpa_driver_auth_params *params)
5835 {
5836         int i;
5837
5838         drv->auth_freq = params->freq;
5839         drv->auth_alg = params->auth_alg;
5840         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
5841         drv->auth_local_state_change = params->local_state_change;
5842         drv->auth_p2p = params->p2p;
5843
5844         if (params->bssid)
5845                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
5846         else
5847                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
5848
5849         if (params->ssid) {
5850                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
5851                 drv->auth_ssid_len = params->ssid_len;
5852         } else
5853                 drv->auth_ssid_len = 0;
5854
5855
5856         os_free(drv->auth_ie);
5857         drv->auth_ie = NULL;
5858         drv->auth_ie_len = 0;
5859         if (params->ie) {
5860                 drv->auth_ie = os_malloc(params->ie_len);
5861                 if (drv->auth_ie) {
5862                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
5863                         drv->auth_ie_len = params->ie_len;
5864                 }
5865         }
5866
5867         for (i = 0; i < 4; i++) {
5868                 if (params->wep_key[i] && params->wep_key_len[i] &&
5869                     params->wep_key_len[i] <= 16) {
5870                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
5871                                   params->wep_key_len[i]);
5872                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
5873                 } else
5874                         drv->auth_wep_key_len[i] = 0;
5875         }
5876 }
5877
5878
5879 static int wpa_driver_nl80211_authenticate(
5880         struct i802_bss *bss, struct wpa_driver_auth_params *params)
5881 {
5882         struct wpa_driver_nl80211_data *drv = bss->drv;
5883         int ret = -1, i;
5884         struct nl_msg *msg;
5885         enum nl80211_auth_type type;
5886         enum nl80211_iftype nlmode;
5887         int count = 0;
5888         int is_retry;
5889
5890         is_retry = drv->retry_auth;
5891         drv->retry_auth = 0;
5892
5893         nl80211_mark_disconnected(drv);
5894         os_memset(drv->auth_bssid, 0, ETH_ALEN);
5895         if (params->bssid)
5896                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
5897         else
5898                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
5899         /* FIX: IBSS mode */
5900         nlmode = params->p2p ?
5901                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5902         if (drv->nlmode != nlmode &&
5903             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
5904                 return -1;
5905
5906 retry:
5907         msg = nlmsg_alloc();
5908         if (!msg)
5909                 return -1;
5910
5911         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
5912                    drv->ifindex);
5913
5914         nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
5915
5916         for (i = 0; i < 4; i++) {
5917                 if (!params->wep_key[i])
5918                         continue;
5919                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
5920                                            NULL, i,
5921                                            i == params->wep_tx_keyidx, NULL, 0,
5922                                            params->wep_key[i],
5923                                            params->wep_key_len[i]);
5924                 if (params->wep_tx_keyidx != i)
5925                         continue;
5926                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
5927                                params->wep_key[i], params->wep_key_len[i])) {
5928                         nlmsg_free(msg);
5929                         return -1;
5930                 }
5931         }
5932
5933         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5934         if (params->bssid) {
5935                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
5936                            MAC2STR(params->bssid));
5937                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5938         }
5939         if (params->freq) {
5940                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
5941                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5942         }
5943         if (params->ssid) {
5944                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5945                                   params->ssid, params->ssid_len);
5946                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5947                         params->ssid);
5948         }
5949         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
5950         if (params->ie)
5951                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
5952         if (params->sae_data) {
5953                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
5954                             params->sae_data_len);
5955                 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
5956                         params->sae_data);
5957         }
5958         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5959                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5960         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5961                 type = NL80211_AUTHTYPE_SHARED_KEY;
5962         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5963                 type = NL80211_AUTHTYPE_NETWORK_EAP;
5964         else if (params->auth_alg & WPA_AUTH_ALG_FT)
5965                 type = NL80211_AUTHTYPE_FT;
5966         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
5967                 type = NL80211_AUTHTYPE_SAE;
5968         else
5969                 goto nla_put_failure;
5970         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5971         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5972         if (params->local_state_change) {
5973                 wpa_printf(MSG_DEBUG, "  * Local state change only");
5974                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
5975         }
5976
5977         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5978         msg = NULL;
5979         if (ret) {
5980                 wpa_dbg(drv->ctx, MSG_DEBUG,
5981                         "nl80211: MLME command failed (auth): ret=%d (%s)",
5982                         ret, strerror(-ret));
5983                 count++;
5984                 if (ret == -EALREADY && count == 1 && params->bssid &&
5985                     !params->local_state_change) {
5986                         /*
5987                          * mac80211 does not currently accept new
5988                          * authentication if we are already authenticated. As a
5989                          * workaround, force deauthentication and try again.
5990                          */
5991                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
5992                                    "after forced deauthentication");
5993                         wpa_driver_nl80211_deauthenticate(
5994                                 bss, params->bssid,
5995                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
5996                         nlmsg_free(msg);
5997                         goto retry;
5998                 }
5999
6000                 if (ret == -ENOENT && params->freq && !is_retry) {
6001                         /*
6002                          * cfg80211 has likely expired the BSS entry even
6003                          * though it was previously available in our internal
6004                          * BSS table. To recover quickly, start a single
6005                          * channel scan on the specified channel.
6006                          */
6007                         struct wpa_driver_scan_params scan;
6008                         int freqs[2];
6009
6010                         os_memset(&scan, 0, sizeof(scan));
6011                         scan.num_ssids = 1;
6012                         if (params->ssid) {
6013                                 scan.ssids[0].ssid = params->ssid;
6014                                 scan.ssids[0].ssid_len = params->ssid_len;
6015                         }
6016                         freqs[0] = params->freq;
6017                         freqs[1] = 0;
6018                         scan.freqs = freqs;
6019                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
6020                                    "channel scan to refresh cfg80211 BSS "
6021                                    "entry");
6022                         ret = wpa_driver_nl80211_scan(bss, &scan);
6023                         if (ret == 0) {
6024                                 nl80211_copy_auth_params(drv, params);
6025                                 drv->scan_for_auth = 1;
6026                         }
6027                 } else if (is_retry) {
6028                         /*
6029                          * Need to indicate this with an event since the return
6030                          * value from the retry is not delivered to core code.
6031                          */
6032                         union wpa_event_data event;
6033                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
6034                                    "failed");
6035                         os_memset(&event, 0, sizeof(event));
6036                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
6037                                   ETH_ALEN);
6038                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
6039                                              &event);
6040                 }
6041
6042                 goto nla_put_failure;
6043         }
6044         ret = 0;
6045         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
6046                    "successfully");
6047
6048 nla_put_failure:
6049         nlmsg_free(msg);
6050         return ret;
6051 }
6052
6053
6054 static int wpa_driver_nl80211_authenticate_retry(
6055         struct wpa_driver_nl80211_data *drv)
6056 {
6057         struct wpa_driver_auth_params params;
6058         struct i802_bss *bss = drv->first_bss;
6059         int i;
6060
6061         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
6062
6063         os_memset(&params, 0, sizeof(params));
6064         params.freq = drv->auth_freq;
6065         params.auth_alg = drv->auth_alg;
6066         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
6067         params.local_state_change = drv->auth_local_state_change;
6068         params.p2p = drv->auth_p2p;
6069
6070         if (!is_zero_ether_addr(drv->auth_bssid_))
6071                 params.bssid = drv->auth_bssid_;
6072
6073         if (drv->auth_ssid_len) {
6074                 params.ssid = drv->auth_ssid;
6075                 params.ssid_len = drv->auth_ssid_len;
6076         }
6077
6078         params.ie = drv->auth_ie;
6079         params.ie_len = drv->auth_ie_len;
6080
6081         for (i = 0; i < 4; i++) {
6082                 if (drv->auth_wep_key_len[i]) {
6083                         params.wep_key[i] = drv->auth_wep_key[i];
6084                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
6085                 }
6086         }
6087
6088         drv->retry_auth = 1;
6089         return wpa_driver_nl80211_authenticate(bss, &params);
6090 }
6091
6092
6093 struct phy_info_arg {
6094         u16 *num_modes;
6095         struct hostapd_hw_modes *modes;
6096         int last_mode, last_chan_idx;
6097 };
6098
6099 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
6100                              struct nlattr *ampdu_factor,
6101                              struct nlattr *ampdu_density,
6102                              struct nlattr *mcs_set)
6103 {
6104         if (capa)
6105                 mode->ht_capab = nla_get_u16(capa);
6106
6107         if (ampdu_factor)
6108                 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
6109
6110         if (ampdu_density)
6111                 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
6112
6113         if (mcs_set && nla_len(mcs_set) >= 16) {
6114                 u8 *mcs;
6115                 mcs = nla_data(mcs_set);
6116                 os_memcpy(mode->mcs_set, mcs, 16);
6117         }
6118 }
6119
6120
6121 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
6122                               struct nlattr *capa,
6123                               struct nlattr *mcs_set)
6124 {
6125         if (capa)
6126                 mode->vht_capab = nla_get_u32(capa);
6127
6128         if (mcs_set && nla_len(mcs_set) >= 8) {
6129                 u8 *mcs;
6130                 mcs = nla_data(mcs_set);
6131                 os_memcpy(mode->vht_mcs_set, mcs, 8);
6132         }
6133 }
6134
6135
6136 static void phy_info_freq(struct hostapd_hw_modes *mode,
6137                           struct hostapd_channel_data *chan,
6138                           struct nlattr *tb_freq[])
6139 {
6140         u8 channel;
6141         chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
6142         chan->flag = 0;
6143         if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
6144                 chan->chan = channel;
6145
6146         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
6147                 chan->flag |= HOSTAPD_CHAN_DISABLED;
6148         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
6149                 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN | HOSTAPD_CHAN_NO_IBSS;
6150         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
6151                 chan->flag |= HOSTAPD_CHAN_RADAR;
6152
6153         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
6154                 enum nl80211_dfs_state state =
6155                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
6156
6157                 switch (state) {
6158                 case NL80211_DFS_USABLE:
6159                         chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
6160                         break;
6161                 case NL80211_DFS_AVAILABLE:
6162                         chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
6163                         break;
6164                 case NL80211_DFS_UNAVAILABLE:
6165                         chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
6166                         break;
6167                 }
6168         }
6169 }
6170
6171
6172 static int phy_info_freqs(struct phy_info_arg *phy_info,
6173                           struct hostapd_hw_modes *mode, struct nlattr *tb)
6174 {
6175         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
6176                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
6177                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
6178                 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
6179                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
6180                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
6181                 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
6182         };
6183         int new_channels = 0;
6184         struct hostapd_channel_data *channel;
6185         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
6186         struct nlattr *nl_freq;
6187         int rem_freq, idx;
6188
6189         if (tb == NULL)
6190                 return NL_OK;
6191
6192         nla_for_each_nested(nl_freq, tb, rem_freq) {
6193                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
6194                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
6195                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
6196                         continue;
6197                 new_channels++;
6198         }
6199
6200         channel = os_realloc_array(mode->channels,
6201                                    mode->num_channels + new_channels,
6202                                    sizeof(struct hostapd_channel_data));
6203         if (!channel)
6204                 return NL_SKIP;
6205
6206         mode->channels = channel;
6207         mode->num_channels += new_channels;
6208
6209         idx = phy_info->last_chan_idx;
6210
6211         nla_for_each_nested(nl_freq, tb, rem_freq) {
6212                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
6213                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
6214                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
6215                         continue;
6216                 phy_info_freq(mode, &mode->channels[idx], tb_freq);
6217                 idx++;
6218         }
6219         phy_info->last_chan_idx = idx;
6220
6221         return NL_OK;
6222 }
6223
6224
6225 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
6226 {
6227         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
6228                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
6229                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
6230                 { .type = NLA_FLAG },
6231         };
6232         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
6233         struct nlattr *nl_rate;
6234         int rem_rate, idx;
6235
6236         if (tb == NULL)
6237                 return NL_OK;
6238
6239         nla_for_each_nested(nl_rate, tb, rem_rate) {
6240                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
6241                           nla_data(nl_rate), nla_len(nl_rate),
6242                           rate_policy);
6243                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
6244                         continue;
6245                 mode->num_rates++;
6246         }
6247
6248         mode->rates = os_calloc(mode->num_rates, sizeof(int));
6249         if (!mode->rates)
6250                 return NL_SKIP;
6251
6252         idx = 0;
6253
6254         nla_for_each_nested(nl_rate, tb, rem_rate) {
6255                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
6256                           nla_data(nl_rate), nla_len(nl_rate),
6257                           rate_policy);
6258                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
6259                         continue;
6260                 mode->rates[idx] = nla_get_u32(
6261                         tb_rate[NL80211_BITRATE_ATTR_RATE]);
6262                 idx++;
6263         }
6264
6265         return NL_OK;
6266 }
6267
6268
6269 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
6270 {
6271         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
6272         struct hostapd_hw_modes *mode;
6273         int ret;
6274
6275         if (phy_info->last_mode != nl_band->nla_type) {
6276                 mode = os_realloc_array(phy_info->modes,
6277                                         *phy_info->num_modes + 1,
6278                                         sizeof(*mode));
6279                 if (!mode)
6280                         return NL_SKIP;
6281                 phy_info->modes = mode;
6282
6283                 mode = &phy_info->modes[*(phy_info->num_modes)];
6284                 os_memset(mode, 0, sizeof(*mode));
6285                 mode->mode = NUM_HOSTAPD_MODES;
6286                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
6287                         HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
6288
6289                 /*
6290                  * Unsupported VHT MCS stream is defined as value 3, so the VHT
6291                  * MCS RX/TX map must be initialized with 0xffff to mark all 8
6292                  * possible streams as unsupported. This will be overridden if
6293                  * driver advertises VHT support.
6294                  */
6295                 mode->vht_mcs_set[0] = 0xff;
6296                 mode->vht_mcs_set[1] = 0xff;
6297                 mode->vht_mcs_set[4] = 0xff;
6298                 mode->vht_mcs_set[5] = 0xff;
6299
6300                 *(phy_info->num_modes) += 1;
6301                 phy_info->last_mode = nl_band->nla_type;
6302                 phy_info->last_chan_idx = 0;
6303         } else
6304                 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
6305
6306         nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
6307                   nla_len(nl_band), NULL);
6308
6309         phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
6310                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
6311                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
6312                          tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
6313         phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
6314                           tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
6315         ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
6316         if (ret != NL_OK)
6317                 return ret;
6318         ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
6319         if (ret != NL_OK)
6320                 return ret;
6321
6322         return NL_OK;
6323 }
6324
6325
6326 static int phy_info_handler(struct nl_msg *msg, void *arg)
6327 {
6328         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
6329         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6330         struct phy_info_arg *phy_info = arg;
6331         struct nlattr *nl_band;
6332         int rem_band;
6333
6334         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6335                   genlmsg_attrlen(gnlh, 0), NULL);
6336
6337         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
6338                 return NL_SKIP;
6339
6340         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
6341         {
6342                 int res = phy_info_band(phy_info, nl_band);
6343                 if (res != NL_OK)
6344                         return res;
6345         }
6346
6347         return NL_SKIP;
6348 }
6349
6350
6351 static struct hostapd_hw_modes *
6352 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
6353                                      u16 *num_modes)
6354 {
6355         u16 m;
6356         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
6357         int i, mode11g_idx = -1;
6358
6359         /* heuristic to set up modes */
6360         for (m = 0; m < *num_modes; m++) {
6361                 if (!modes[m].num_channels)
6362                         continue;
6363                 if (modes[m].channels[0].freq < 4000) {
6364                         modes[m].mode = HOSTAPD_MODE_IEEE80211B;
6365                         for (i = 0; i < modes[m].num_rates; i++) {
6366                                 if (modes[m].rates[i] > 200) {
6367                                         modes[m].mode = HOSTAPD_MODE_IEEE80211G;
6368                                         break;
6369                                 }
6370                         }
6371                 } else if (modes[m].channels[0].freq > 50000)
6372                         modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
6373                 else
6374                         modes[m].mode = HOSTAPD_MODE_IEEE80211A;
6375         }
6376
6377         /* If only 802.11g mode is included, use it to construct matching
6378          * 802.11b mode data. */
6379
6380         for (m = 0; m < *num_modes; m++) {
6381                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
6382                         return modes; /* 802.11b already included */
6383                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
6384                         mode11g_idx = m;
6385         }
6386
6387         if (mode11g_idx < 0)
6388                 return modes; /* 2.4 GHz band not supported at all */
6389
6390         nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
6391         if (nmodes == NULL)
6392                 return modes; /* Could not add 802.11b mode */
6393
6394         mode = &nmodes[*num_modes];
6395         os_memset(mode, 0, sizeof(*mode));
6396         (*num_modes)++;
6397         modes = nmodes;
6398
6399         mode->mode = HOSTAPD_MODE_IEEE80211B;
6400
6401         mode11g = &modes[mode11g_idx];
6402         mode->num_channels = mode11g->num_channels;
6403         mode->channels = os_malloc(mode11g->num_channels *
6404                                    sizeof(struct hostapd_channel_data));
6405         if (mode->channels == NULL) {
6406                 (*num_modes)--;
6407                 return modes; /* Could not add 802.11b mode */
6408         }
6409         os_memcpy(mode->channels, mode11g->channels,
6410                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
6411
6412         mode->num_rates = 0;
6413         mode->rates = os_malloc(4 * sizeof(int));
6414         if (mode->rates == NULL) {
6415                 os_free(mode->channels);
6416                 (*num_modes)--;
6417                 return modes; /* Could not add 802.11b mode */
6418         }
6419
6420         for (i = 0; i < mode11g->num_rates; i++) {
6421                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
6422                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
6423                         continue;
6424                 mode->rates[mode->num_rates] = mode11g->rates[i];
6425                 mode->num_rates++;
6426                 if (mode->num_rates == 4)
6427                         break;
6428         }
6429
6430         if (mode->num_rates == 0) {
6431                 os_free(mode->channels);
6432                 os_free(mode->rates);
6433                 (*num_modes)--;
6434                 return modes; /* No 802.11b rates */
6435         }
6436
6437         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
6438                    "information");
6439
6440         return modes;
6441 }
6442
6443
6444 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
6445                                   int end)
6446 {
6447         int c;
6448
6449         for (c = 0; c < mode->num_channels; c++) {
6450                 struct hostapd_channel_data *chan = &mode->channels[c];
6451                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
6452                         chan->flag |= HOSTAPD_CHAN_HT40;
6453         }
6454 }
6455
6456
6457 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
6458                                       int end)
6459 {
6460         int c;
6461
6462         for (c = 0; c < mode->num_channels; c++) {
6463                 struct hostapd_channel_data *chan = &mode->channels[c];
6464                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
6465                         continue;
6466                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
6467                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
6468                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
6469                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
6470         }
6471 }
6472
6473
6474 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
6475                                       struct phy_info_arg *results)
6476 {
6477         u16 m;
6478
6479         for (m = 0; m < *results->num_modes; m++) {
6480                 int c;
6481                 struct hostapd_hw_modes *mode = &results->modes[m];
6482
6483                 for (c = 0; c < mode->num_channels; c++) {
6484                         struct hostapd_channel_data *chan = &mode->channels[c];
6485                         if ((u32) chan->freq - 10 >= start &&
6486                             (u32) chan->freq + 10 <= end)
6487                                 chan->max_tx_power = max_eirp;
6488                 }
6489         }
6490 }
6491
6492
6493 static void nl80211_reg_rule_ht40(u32 start, u32 end,
6494                                   struct phy_info_arg *results)
6495 {
6496         u16 m;
6497
6498         for (m = 0; m < *results->num_modes; m++) {
6499                 if (!(results->modes[m].ht_capab &
6500                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
6501                         continue;
6502                 nl80211_set_ht40_mode(&results->modes[m], start, end);
6503         }
6504 }
6505
6506
6507 static void nl80211_reg_rule_sec(struct nlattr *tb[],
6508                                  struct phy_info_arg *results)
6509 {
6510         u32 start, end, max_bw;
6511         u16 m;
6512
6513         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
6514             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
6515             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
6516                 return;
6517
6518         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
6519         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
6520         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
6521
6522         if (max_bw < 20)
6523                 return;
6524
6525         for (m = 0; m < *results->num_modes; m++) {
6526                 if (!(results->modes[m].ht_capab &
6527                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
6528                         continue;
6529                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
6530         }
6531 }
6532
6533
6534 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
6535                                  int end)
6536 {
6537         int c;
6538
6539         for (c = 0; c < mode->num_channels; c++) {
6540                 struct hostapd_channel_data *chan = &mode->channels[c];
6541                 if (chan->freq - 10 >= start && chan->freq + 70 <= end)
6542                         chan->flag |= HOSTAPD_CHAN_VHT_10_70;
6543
6544                 if (chan->freq - 30 >= start && chan->freq + 50 <= end)
6545                         chan->flag |= HOSTAPD_CHAN_VHT_30_50;
6546
6547                 if (chan->freq - 50 >= start && chan->freq + 30 <= end)
6548                         chan->flag |= HOSTAPD_CHAN_VHT_50_30;
6549
6550                 if (chan->freq - 70 >= start && chan->freq + 10 <= end)
6551                         chan->flag |= HOSTAPD_CHAN_VHT_70_10;
6552         }
6553 }
6554
6555
6556 static void nl80211_reg_rule_vht(struct nlattr *tb[],
6557                                  struct phy_info_arg *results)
6558 {
6559         u32 start, end, max_bw;
6560         u16 m;
6561
6562         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
6563             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
6564             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
6565                 return;
6566
6567         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
6568         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
6569         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
6570
6571         if (max_bw < 80)
6572                 return;
6573
6574         for (m = 0; m < *results->num_modes; m++) {
6575                 if (!(results->modes[m].ht_capab &
6576                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
6577                         continue;
6578                 /* TODO: use a real VHT support indication */
6579                 if (!results->modes[m].vht_capab)
6580                         continue;
6581
6582                 nl80211_set_vht_mode(&results->modes[m], start, end);
6583         }
6584 }
6585
6586
6587 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
6588 {
6589         switch (region) {
6590         case NL80211_DFS_UNSET:
6591                 return "DFS-UNSET";
6592         case NL80211_DFS_FCC:
6593                 return "DFS-FCC";
6594         case NL80211_DFS_ETSI:
6595                 return "DFS-ETSI";
6596         case NL80211_DFS_JP:
6597                 return "DFS-JP";
6598         default:
6599                 return "DFS-invalid";
6600         }
6601 }
6602
6603
6604 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
6605 {
6606         struct phy_info_arg *results = arg;
6607         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
6608         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6609         struct nlattr *nl_rule;
6610         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
6611         int rem_rule;
6612         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
6613                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6614                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6615                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6616                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6617                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6618                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6619         };
6620
6621         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6622                   genlmsg_attrlen(gnlh, 0), NULL);
6623         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
6624             !tb_msg[NL80211_ATTR_REG_RULES]) {
6625                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
6626                            "available");
6627                 return NL_SKIP;
6628         }
6629
6630         if (tb_msg[NL80211_ATTR_DFS_REGION]) {
6631                 enum nl80211_dfs_regions dfs_domain;
6632                 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
6633                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
6634                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
6635                            dfs_domain_name(dfs_domain));
6636         } else {
6637                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
6638                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
6639         }
6640
6641         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
6642         {
6643                 u32 start, end, max_eirp = 0, max_bw = 0;
6644                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
6645                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
6646                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
6647                     tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
6648                         continue;
6649                 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
6650                 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
6651                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6652                         max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
6653                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6654                         max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
6655
6656                 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm",
6657                            start, end, max_bw, max_eirp);
6658                 if (max_bw >= 40)
6659                         nl80211_reg_rule_ht40(start, end, results);
6660                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6661                         nl80211_reg_rule_max_eirp(start, end, max_eirp,
6662                                                   results);
6663         }
6664
6665         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
6666         {
6667                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
6668                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
6669                 nl80211_reg_rule_sec(tb_rule, results);
6670         }
6671
6672         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
6673         {
6674                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
6675                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
6676                 nl80211_reg_rule_vht(tb_rule, results);
6677         }
6678
6679         return NL_SKIP;
6680 }
6681
6682
6683 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
6684                                         struct phy_info_arg *results)
6685 {
6686         struct nl_msg *msg;
6687
6688         msg = nlmsg_alloc();
6689         if (!msg)
6690                 return -ENOMEM;
6691
6692         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
6693         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
6694 }
6695
6696
6697 static struct hostapd_hw_modes *
6698 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
6699 {
6700         u32 feat;
6701         struct i802_bss *bss = priv;
6702         struct wpa_driver_nl80211_data *drv = bss->drv;
6703         struct nl_msg *msg;
6704         struct phy_info_arg result = {
6705                 .num_modes = num_modes,
6706                 .modes = NULL,
6707                 .last_mode = -1,
6708         };
6709
6710         *num_modes = 0;
6711         *flags = 0;
6712
6713         msg = nlmsg_alloc();
6714         if (!msg)
6715                 return NULL;
6716
6717         feat = get_nl80211_protocol_features(drv);
6718         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
6719                 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY);
6720         else
6721                 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
6722
6723         NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
6724         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6725
6726         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
6727                 nl80211_set_regulatory_flags(drv, &result);
6728                 return wpa_driver_nl80211_postprocess_modes(result.modes,
6729                                                             num_modes);
6730         }
6731         msg = NULL;
6732  nla_put_failure:
6733         nlmsg_free(msg);
6734         return NULL;
6735 }
6736
6737
6738 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv,
6739                                         const void *data, size_t len,
6740                                         int encrypt, int noack)
6741 {
6742         __u8 rtap_hdr[] = {
6743                 0x00, 0x00, /* radiotap version */
6744                 0x0e, 0x00, /* radiotap length */
6745                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
6746                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
6747                 0x00,       /* padding */
6748                 0x00, 0x00, /* RX and TX flags to indicate that */
6749                 0x00, 0x00, /* this is the injected frame directly */
6750         };
6751         struct iovec iov[2] = {
6752                 {
6753                         .iov_base = &rtap_hdr,
6754                         .iov_len = sizeof(rtap_hdr),
6755                 },
6756                 {
6757                         .iov_base = (void *) data,
6758                         .iov_len = len,
6759                 }
6760         };
6761         struct msghdr msg = {
6762                 .msg_name = NULL,
6763                 .msg_namelen = 0,
6764                 .msg_iov = iov,
6765                 .msg_iovlen = 2,
6766                 .msg_control = NULL,
6767                 .msg_controllen = 0,
6768                 .msg_flags = 0,
6769         };
6770         int res;
6771         u16 txflags = 0;
6772
6773         if (encrypt)
6774                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
6775
6776         if (drv->monitor_sock < 0) {
6777                 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
6778                            "for %s", __func__);
6779                 return -1;
6780         }
6781
6782         if (noack)
6783                 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK;
6784         WPA_PUT_LE16(&rtap_hdr[12], txflags);
6785
6786         res = sendmsg(drv->monitor_sock, &msg, 0);
6787         if (res < 0) {
6788                 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
6789                 return -1;
6790         }
6791         return 0;
6792 }
6793
6794
6795 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
6796                                          const void *data, size_t len,
6797                                          int encrypt, int noack,
6798                                          unsigned int freq, int no_cck,
6799                                          int offchanok, unsigned int wait_time)
6800 {
6801         struct wpa_driver_nl80211_data *drv = bss->drv;
6802         u64 cookie;
6803         int res;
6804
6805         if (freq == 0) {
6806                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
6807                            bss->freq);
6808                 freq = bss->freq;
6809         }
6810
6811         if (drv->use_monitor) {
6812                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_mntr",
6813                            freq, bss->freq);
6814                 return wpa_driver_nl80211_send_mntr(drv, data, len,
6815                                                     encrypt, noack);
6816         }
6817
6818         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
6819         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
6820                                      &cookie, no_cck, noack, offchanok);
6821         if (res == 0 && !noack) {
6822                 const struct ieee80211_mgmt *mgmt;
6823                 u16 fc;
6824
6825                 mgmt = (const struct ieee80211_mgmt *) data;
6826                 fc = le_to_host16(mgmt->frame_control);
6827                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
6828                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
6829                         wpa_printf(MSG_MSGDUMP,
6830                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
6831                                    (long long unsigned int)
6832                                    drv->send_action_cookie,
6833                                    (long long unsigned int) cookie);
6834                         drv->send_action_cookie = cookie;
6835                 }
6836         }
6837
6838         return res;
6839 }
6840
6841
6842 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
6843                                         size_t data_len, int noack,
6844                                         unsigned int freq, int no_cck,
6845                                         int offchanok,
6846                                         unsigned int wait_time)
6847 {
6848         struct wpa_driver_nl80211_data *drv = bss->drv;
6849         struct ieee80211_mgmt *mgmt;
6850         int encrypt = 1;
6851         u16 fc;
6852
6853         mgmt = (struct ieee80211_mgmt *) data;
6854         fc = le_to_host16(mgmt->frame_control);
6855         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x nlmode=%d",
6856                    noack, freq, no_cck, offchanok, wait_time, fc, drv->nlmode);
6857
6858         if ((is_sta_interface(drv->nlmode) ||
6859              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
6860             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
6861             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
6862                 /*
6863                  * The use of last_mgmt_freq is a bit of a hack,
6864                  * but it works due to the single-threaded nature
6865                  * of wpa_supplicant.
6866                  */
6867                 if (freq == 0) {
6868                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
6869                                    drv->last_mgmt_freq);
6870                         freq = drv->last_mgmt_freq;
6871                 }
6872                 return nl80211_send_frame_cmd(bss, freq, 0,
6873                                               data, data_len, NULL, 1, noack,
6874                                               1);
6875         }
6876
6877         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
6878                 if (freq == 0) {
6879                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
6880                                    bss->freq);
6881                         freq = bss->freq;
6882                 }
6883                 return nl80211_send_frame_cmd(bss, freq,
6884                                               (int) freq == bss->freq ? 0 :
6885                                               wait_time,
6886                                               data, data_len,
6887                                               &drv->send_action_cookie,
6888                                               no_cck, noack, offchanok);
6889         }
6890
6891         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
6892             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
6893                 /*
6894                  * Only one of the authentication frame types is encrypted.
6895                  * In order for static WEP encryption to work properly (i.e.,
6896                  * to not encrypt the frame), we need to tell mac80211 about
6897                  * the frames that must not be encrypted.
6898                  */
6899                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
6900                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
6901                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
6902                         encrypt = 0;
6903         }
6904
6905         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
6906         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
6907                                              noack, freq, no_cck, offchanok,
6908                                              wait_time);
6909 }
6910
6911
6912 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
6913                            int slot, int ht_opmode, int ap_isolate,
6914                            int *basic_rates)
6915 {
6916         struct wpa_driver_nl80211_data *drv = bss->drv;
6917         struct nl_msg *msg;
6918
6919         msg = nlmsg_alloc();
6920         if (!msg)
6921                 return -ENOMEM;
6922
6923         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
6924
6925         if (cts >= 0)
6926                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
6927         if (preamble >= 0)
6928                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
6929         if (slot >= 0)
6930                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
6931         if (ht_opmode >= 0)
6932                 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
6933         if (ap_isolate >= 0)
6934                 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
6935
6936         if (basic_rates) {
6937                 u8 rates[NL80211_MAX_SUPP_RATES];
6938                 u8 rates_len = 0;
6939                 int i;
6940
6941                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
6942                      i++)
6943                         rates[rates_len++] = basic_rates[i] / 5;
6944
6945                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
6946         }
6947
6948         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6949
6950         return send_and_recv_msgs(drv, msg, NULL, NULL);
6951  nla_put_failure:
6952         nlmsg_free(msg);
6953         return -ENOBUFS;
6954 }
6955
6956
6957 static int wpa_driver_nl80211_set_acl(void *priv,
6958                                       struct hostapd_acl_params *params)
6959 {
6960         struct i802_bss *bss = priv;
6961         struct wpa_driver_nl80211_data *drv = bss->drv;
6962         struct nl_msg *msg;
6963         struct nlattr *acl;
6964         unsigned int i;
6965         int ret = 0;
6966
6967         if (!(drv->capa.max_acl_mac_addrs))
6968                 return -ENOTSUP;
6969
6970         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
6971                 return -ENOTSUP;
6972
6973         msg = nlmsg_alloc();
6974         if (!msg)
6975                 return -ENOMEM;
6976
6977         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
6978                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
6979
6980         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_MAC_ACL);
6981
6982         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6983
6984         NLA_PUT_U32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
6985                     NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
6986                     NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED);
6987
6988         acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
6989         if (acl == NULL)
6990                 goto nla_put_failure;
6991
6992         for (i = 0; i < params->num_mac_acl; i++)
6993                 NLA_PUT(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr);
6994
6995         nla_nest_end(msg, acl);
6996
6997         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6998         msg = NULL;
6999         if (ret) {
7000                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
7001                            ret, strerror(-ret));
7002         }
7003
7004 nla_put_failure:
7005         nlmsg_free(msg);
7006
7007         return ret;
7008 }
7009
7010
7011 static int wpa_driver_nl80211_set_ap(void *priv,
7012                                      struct wpa_driver_ap_params *params)
7013 {
7014         struct i802_bss *bss = priv;
7015         struct wpa_driver_nl80211_data *drv = bss->drv;
7016         struct nl_msg *msg;
7017         u8 cmd = NL80211_CMD_NEW_BEACON;
7018         int ret;
7019         int beacon_set;
7020         int ifindex = if_nametoindex(bss->ifname);
7021         int num_suites;
7022         u32 suites[10], suite;
7023         u32 ver;
7024
7025         beacon_set = bss->beacon_set;
7026
7027         msg = nlmsg_alloc();
7028         if (!msg)
7029                 return -ENOMEM;
7030
7031         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
7032                    beacon_set);
7033         if (beacon_set)
7034                 cmd = NL80211_CMD_SET_BEACON;
7035
7036         nl80211_cmd(drv, msg, 0, cmd);
7037         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
7038                     params->head, params->head_len);
7039         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
7040         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
7041                     params->tail, params->tail_len);
7042         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
7043         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex);
7044         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7045         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
7046         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
7047         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
7048         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
7049         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
7050                           params->ssid, params->ssid_len);
7051         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
7052                 params->ssid);
7053         if (params->proberesp && params->proberesp_len) {
7054                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
7055                             params->proberesp, params->proberesp_len);
7056                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
7057                         params->proberesp);
7058         }
7059         switch (params->hide_ssid) {
7060         case NO_SSID_HIDING:
7061                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
7062                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
7063                             NL80211_HIDDEN_SSID_NOT_IN_USE);
7064                 break;
7065         case HIDDEN_SSID_ZERO_LEN:
7066                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
7067                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
7068                             NL80211_HIDDEN_SSID_ZERO_LEN);
7069                 break;
7070         case HIDDEN_SSID_ZERO_CONTENTS:
7071                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
7072                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
7073                             NL80211_HIDDEN_SSID_ZERO_CONTENTS);
7074                 break;
7075         }
7076         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
7077         if (params->privacy)
7078                 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
7079         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
7080         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
7081             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
7082                 /* Leave out the attribute */
7083         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
7084                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
7085                             NL80211_AUTHTYPE_SHARED_KEY);
7086         else
7087                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
7088                             NL80211_AUTHTYPE_OPEN_SYSTEM);
7089
7090         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
7091         ver = 0;
7092         if (params->wpa_version & WPA_PROTO_WPA)
7093                 ver |= NL80211_WPA_VERSION_1;
7094         if (params->wpa_version & WPA_PROTO_RSN)
7095                 ver |= NL80211_WPA_VERSION_2;
7096         if (ver)
7097                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
7098
7099         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
7100                    params->key_mgmt_suites);
7101         num_suites = 0;
7102         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
7103                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
7104         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
7105                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
7106         if (num_suites) {
7107                 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
7108                         num_suites * sizeof(u32), suites);
7109         }
7110
7111         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
7112             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
7113                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
7114
7115         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
7116                    params->pairwise_ciphers);
7117         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
7118                                                  suites, ARRAY_SIZE(suites));
7119         if (num_suites) {
7120                 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
7121                         num_suites * sizeof(u32), suites);
7122         }
7123
7124         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
7125                    params->group_cipher);
7126         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
7127         if (suite)
7128                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite);
7129
7130         if (params->beacon_ies) {
7131                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
7132                                 params->beacon_ies);
7133                 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
7134                         wpabuf_head(params->beacon_ies));
7135         }
7136         if (params->proberesp_ies) {
7137                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
7138                                 params->proberesp_ies);
7139                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
7140                         wpabuf_len(params->proberesp_ies),
7141                         wpabuf_head(params->proberesp_ies));
7142         }
7143         if (params->assocresp_ies) {
7144                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
7145                                 params->assocresp_ies);
7146                 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
7147                         wpabuf_len(params->assocresp_ies),
7148                         wpabuf_head(params->assocresp_ies));
7149         }
7150
7151         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
7152                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
7153                            params->ap_max_inactivity);
7154                 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
7155                             params->ap_max_inactivity);
7156         }
7157
7158         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7159         if (ret) {
7160                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
7161                            ret, strerror(-ret));
7162         } else {
7163                 bss->beacon_set = 1;
7164                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
7165                                 params->short_slot_time, params->ht_opmode,
7166                                 params->isolate, params->basic_rates);
7167         }
7168         return ret;
7169  nla_put_failure:
7170         nlmsg_free(msg);
7171         return -ENOBUFS;
7172 }
7173
7174
7175 static int nl80211_put_freq_params(struct nl_msg *msg,
7176                                    struct hostapd_freq_params *freq)
7177 {
7178         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
7179         if (freq->vht_enabled) {
7180                 switch (freq->bandwidth) {
7181                 case 20:
7182                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7183                                     NL80211_CHAN_WIDTH_20);
7184                         break;
7185                 case 40:
7186                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7187                                     NL80211_CHAN_WIDTH_40);
7188                         break;
7189                 case 80:
7190                         if (freq->center_freq2)
7191                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7192                                             NL80211_CHAN_WIDTH_80P80);
7193                         else
7194                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7195                                             NL80211_CHAN_WIDTH_80);
7196                         break;
7197                 case 160:
7198                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7199                                     NL80211_CHAN_WIDTH_160);
7200                         break;
7201                 default:
7202                         return -EINVAL;
7203                 }
7204                 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1);
7205                 if (freq->center_freq2)
7206                         NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2,
7207                                     freq->center_freq2);
7208         } else if (freq->ht_enabled) {
7209                 switch (freq->sec_channel_offset) {
7210                 case -1:
7211                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
7212                                     NL80211_CHAN_HT40MINUS);
7213                         break;
7214                 case 1:
7215                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
7216                                     NL80211_CHAN_HT40PLUS);
7217                         break;
7218                 default:
7219                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
7220                                     NL80211_CHAN_HT20);
7221                         break;
7222                 }
7223         }
7224         return 0;
7225
7226 nla_put_failure:
7227         return -ENOBUFS;
7228 }
7229
7230
7231 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
7232                                        struct hostapd_freq_params *freq)
7233 {
7234         struct wpa_driver_nl80211_data *drv = bss->drv;
7235         struct nl_msg *msg;
7236         int ret;
7237
7238         wpa_printf(MSG_DEBUG,
7239                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
7240                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7241                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7242         msg = nlmsg_alloc();
7243         if (!msg)
7244                 return -1;
7245
7246         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7247
7248         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7249         if (nl80211_put_freq_params(msg, freq) < 0)
7250                 goto nla_put_failure;
7251
7252         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7253         msg = NULL;
7254         if (ret == 0) {
7255                 bss->freq = freq->freq;
7256                 return 0;
7257         }
7258         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
7259                    "%d (%s)", freq->freq, ret, strerror(-ret));
7260 nla_put_failure:
7261         nlmsg_free(msg);
7262         return -1;
7263 }
7264
7265
7266 static u32 sta_flags_nl80211(int flags)
7267 {
7268         u32 f = 0;
7269
7270         if (flags & WPA_STA_AUTHORIZED)
7271                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
7272         if (flags & WPA_STA_WMM)
7273                 f |= BIT(NL80211_STA_FLAG_WME);
7274         if (flags & WPA_STA_SHORT_PREAMBLE)
7275                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
7276         if (flags & WPA_STA_MFP)
7277                 f |= BIT(NL80211_STA_FLAG_MFP);
7278         if (flags & WPA_STA_TDLS_PEER)
7279                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
7280
7281         return f;
7282 }
7283
7284
7285 static int wpa_driver_nl80211_sta_add(void *priv,
7286                                       struct hostapd_sta_add_params *params)
7287 {
7288         struct i802_bss *bss = priv;
7289         struct wpa_driver_nl80211_data *drv = bss->drv;
7290         struct nl_msg *msg;
7291         struct nl80211_sta_flag_update upd;
7292         int ret = -ENOBUFS;
7293
7294         if ((params->flags & WPA_STA_TDLS_PEER) &&
7295             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7296                 return -EOPNOTSUPP;
7297
7298         msg = nlmsg_alloc();
7299         if (!msg)
7300                 return -ENOMEM;
7301
7302         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
7303                    params->set ? "Set" : "Add", MAC2STR(params->addr));
7304         nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
7305                     NL80211_CMD_NEW_STATION);
7306
7307         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7308         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
7309         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
7310                 params->supp_rates);
7311         wpa_hexdump(MSG_DEBUG, "  * supported rates", params->supp_rates,
7312                     params->supp_rates_len);
7313         if (!params->set) {
7314                 if (params->aid) {
7315                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
7316                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
7317                 } else {
7318                         /*
7319                          * cfg80211 validates that AID is non-zero, so we have
7320                          * to make this a non-zero value for the TDLS case where
7321                          * a dummy STA entry is used for now.
7322                          */
7323                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
7324                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1);
7325                 }
7326                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
7327                            params->listen_interval);
7328                 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
7329                             params->listen_interval);
7330         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
7331                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
7332                 NLA_PUT_U16(msg, NL80211_ATTR_PEER_AID, params->aid);
7333         }
7334         if (params->ht_capabilities) {
7335                 wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
7336                             (u8 *) params->ht_capabilities,
7337                             sizeof(*params->ht_capabilities));
7338                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
7339                         sizeof(*params->ht_capabilities),
7340                         params->ht_capabilities);
7341         }
7342
7343         if (params->vht_capabilities) {
7344                 wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
7345                             (u8 *) params->vht_capabilities,
7346                             sizeof(*params->vht_capabilities));
7347                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY,
7348                         sizeof(*params->vht_capabilities),
7349                         params->vht_capabilities);
7350         }
7351
7352         wpa_printf(MSG_DEBUG, "  * capability=0x%x", params->capability);
7353         NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability);
7354
7355         if (params->ext_capab) {
7356                 wpa_hexdump(MSG_DEBUG, "  * ext_capab",
7357                             params->ext_capab, params->ext_capab_len);
7358                 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
7359                         params->ext_capab_len, params->ext_capab);
7360         }
7361
7362         if (params->supp_channels) {
7363                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
7364                             params->supp_channels, params->supp_channels_len);
7365                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
7366                         params->supp_channels_len, params->supp_channels);
7367         }
7368
7369         if (params->supp_oper_classes) {
7370                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
7371                             params->supp_oper_classes,
7372                             params->supp_oper_classes_len);
7373                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
7374                         params->supp_oper_classes_len,
7375                         params->supp_oper_classes);
7376         }
7377
7378         os_memset(&upd, 0, sizeof(upd));
7379         upd.mask = sta_flags_nl80211(params->flags);
7380         upd.set = upd.mask;
7381         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
7382                    upd.set, upd.mask);
7383         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
7384
7385         if (params->flags & WPA_STA_WMM) {
7386                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
7387
7388                 if (!wme)
7389                         goto nla_put_failure;
7390
7391                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
7392                 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES,
7393                                 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
7394                 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP,
7395                                 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
7396                                 WMM_QOSINFO_STA_SP_MASK);
7397                 nla_nest_end(msg, wme);
7398         }
7399
7400         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7401         msg = NULL;
7402         if (ret)
7403                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
7404                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
7405                            strerror(-ret));
7406         if (ret == -EEXIST)
7407                 ret = 0;
7408  nla_put_failure:
7409         nlmsg_free(msg);
7410         return ret;
7411 }
7412
7413
7414 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr)
7415 {
7416         struct wpa_driver_nl80211_data *drv = bss->drv;
7417         struct nl_msg *msg;
7418         int ret;
7419
7420         msg = nlmsg_alloc();
7421         if (!msg)
7422                 return -ENOMEM;
7423
7424         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
7425
7426         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7427                     if_nametoindex(bss->ifname));
7428         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7429
7430         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7431         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
7432                    " --> %d (%s)",
7433                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
7434         if (ret == -ENOENT)
7435                 return 0;
7436         return ret;
7437  nla_put_failure:
7438         nlmsg_free(msg);
7439         return -ENOBUFS;
7440 }
7441
7442
7443 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
7444                                  int ifidx)
7445 {
7446         struct nl_msg *msg;
7447
7448         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
7449
7450         /* stop listening for EAPOL on this interface */
7451         del_ifidx(drv, ifidx);
7452
7453         msg = nlmsg_alloc();
7454         if (!msg)
7455                 goto nla_put_failure;
7456
7457         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
7458         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
7459
7460         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7461                 return;
7462         msg = NULL;
7463  nla_put_failure:
7464         nlmsg_free(msg);
7465         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
7466 }
7467
7468
7469 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
7470 {
7471         switch (mode) {
7472         case NL80211_IFTYPE_ADHOC:
7473                 return "ADHOC";
7474         case NL80211_IFTYPE_STATION:
7475                 return "STATION";
7476         case NL80211_IFTYPE_AP:
7477                 return "AP";
7478         case NL80211_IFTYPE_AP_VLAN:
7479                 return "AP_VLAN";
7480         case NL80211_IFTYPE_WDS:
7481                 return "WDS";
7482         case NL80211_IFTYPE_MONITOR:
7483                 return "MONITOR";
7484         case NL80211_IFTYPE_MESH_POINT:
7485                 return "MESH_POINT";
7486         case NL80211_IFTYPE_P2P_CLIENT:
7487                 return "P2P_CLIENT";
7488         case NL80211_IFTYPE_P2P_GO:
7489                 return "P2P_GO";
7490         case NL80211_IFTYPE_P2P_DEVICE:
7491                 return "P2P_DEVICE";
7492         default:
7493                 return "unknown";
7494         }
7495 }
7496
7497
7498 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
7499                                      const char *ifname,
7500                                      enum nl80211_iftype iftype,
7501                                      const u8 *addr, int wds,
7502                                      int (*handler)(struct nl_msg *, void *),
7503                                      void *arg)
7504 {
7505         struct nl_msg *msg;
7506         int ifidx;
7507         int ret = -ENOBUFS;
7508
7509         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
7510                    iftype, nl80211_iftype_str(iftype));
7511
7512         msg = nlmsg_alloc();
7513         if (!msg)
7514                 return -1;
7515
7516         nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
7517         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
7518                 goto nla_put_failure;
7519         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
7520         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
7521
7522         if (iftype == NL80211_IFTYPE_MONITOR) {
7523                 struct nlattr *flags;
7524
7525                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
7526                 if (!flags)
7527                         goto nla_put_failure;
7528
7529                 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES);
7530
7531                 nla_nest_end(msg, flags);
7532         } else if (wds) {
7533                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
7534         }
7535
7536         ret = send_and_recv_msgs(drv, msg, handler, arg);
7537         msg = NULL;
7538         if (ret) {
7539  nla_put_failure:
7540                 nlmsg_free(msg);
7541                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
7542                            ifname, ret, strerror(-ret));
7543                 return ret;
7544         }
7545
7546         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
7547                 return 0;
7548
7549         ifidx = if_nametoindex(ifname);
7550         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
7551                    ifname, ifidx);
7552
7553         if (ifidx <= 0)
7554                 return -1;
7555
7556         /* start listening for EAPOL on this interface */
7557         add_ifidx(drv, ifidx);
7558
7559         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
7560             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
7561                 nl80211_remove_iface(drv, ifidx);
7562                 return -1;
7563         }
7564
7565         return ifidx;
7566 }
7567
7568
7569 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
7570                                 const char *ifname, enum nl80211_iftype iftype,
7571                                 const u8 *addr, int wds,
7572                                 int (*handler)(struct nl_msg *, void *),
7573                                 void *arg, int use_existing)
7574 {
7575         int ret;
7576
7577         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
7578                                         arg);
7579
7580         /* if error occurred and interface exists already */
7581         if (ret == -ENFILE && if_nametoindex(ifname)) {
7582                 if (use_existing) {
7583                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
7584                                    ifname);
7585                         return -ENFILE;
7586                 }
7587                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
7588
7589                 /* Try to remove the interface that was already there. */
7590                 nl80211_remove_iface(drv, if_nametoindex(ifname));
7591
7592                 /* Try to create the interface again */
7593                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
7594                                                 wds, handler, arg);
7595         }
7596
7597         if (ret >= 0 && is_p2p_net_interface(iftype))
7598                 nl80211_disable_11b_rates(drv, ret, 1);
7599
7600         return ret;
7601 }
7602
7603
7604 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
7605 {
7606         struct ieee80211_hdr *hdr;
7607         u16 fc;
7608         union wpa_event_data event;
7609
7610         hdr = (struct ieee80211_hdr *) buf;
7611         fc = le_to_host16(hdr->frame_control);
7612
7613         os_memset(&event, 0, sizeof(event));
7614         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
7615         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
7616         event.tx_status.dst = hdr->addr1;
7617         event.tx_status.data = buf;
7618         event.tx_status.data_len = len;
7619         event.tx_status.ack = ok;
7620         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
7621 }
7622
7623
7624 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
7625                              u8 *buf, size_t len)
7626 {
7627         struct ieee80211_hdr *hdr = (void *)buf;
7628         u16 fc;
7629         union wpa_event_data event;
7630
7631         if (len < sizeof(*hdr))
7632                 return;
7633
7634         fc = le_to_host16(hdr->frame_control);
7635
7636         os_memset(&event, 0, sizeof(event));
7637         event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
7638         event.rx_from_unknown.addr = hdr->addr2;
7639         event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
7640                 (WLAN_FC_FROMDS | WLAN_FC_TODS);
7641         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
7642 }
7643
7644
7645 static void handle_frame(struct wpa_driver_nl80211_data *drv,
7646                          u8 *buf, size_t len, int datarate, int ssi_signal)
7647 {
7648         struct ieee80211_hdr *hdr;
7649         u16 fc;
7650         union wpa_event_data event;
7651
7652         hdr = (struct ieee80211_hdr *) buf;
7653         fc = le_to_host16(hdr->frame_control);
7654
7655         switch (WLAN_FC_GET_TYPE(fc)) {
7656         case WLAN_FC_TYPE_MGMT:
7657                 os_memset(&event, 0, sizeof(event));
7658                 event.rx_mgmt.frame = buf;
7659                 event.rx_mgmt.frame_len = len;
7660                 event.rx_mgmt.datarate = datarate;
7661                 event.rx_mgmt.ssi_signal = ssi_signal;
7662                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
7663                 break;
7664         case WLAN_FC_TYPE_CTRL:
7665                 /* can only get here with PS-Poll frames */
7666                 wpa_printf(MSG_DEBUG, "CTRL");
7667                 from_unknown_sta(drv, buf, len);
7668                 break;
7669         case WLAN_FC_TYPE_DATA:
7670                 from_unknown_sta(drv, buf, len);
7671                 break;
7672         }
7673 }
7674
7675
7676 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
7677 {
7678         struct wpa_driver_nl80211_data *drv = eloop_ctx;
7679         int len;
7680         unsigned char buf[3000];
7681         struct ieee80211_radiotap_iterator iter;
7682         int ret;
7683         int datarate = 0, ssi_signal = 0;
7684         int injected = 0, failed = 0, rxflags = 0;
7685
7686         len = recv(sock, buf, sizeof(buf), 0);
7687         if (len < 0) {
7688                 wpa_printf(MSG_ERROR, "nl80211: Monitor socket recv failed: %s",
7689                            strerror(errno));
7690                 return;
7691         }
7692
7693         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
7694                 wpa_printf(MSG_INFO, "nl80211: received invalid radiotap frame");
7695                 return;
7696         }
7697
7698         while (1) {
7699                 ret = ieee80211_radiotap_iterator_next(&iter);
7700                 if (ret == -ENOENT)
7701                         break;
7702                 if (ret) {
7703                         wpa_printf(MSG_INFO, "nl80211: received invalid radiotap frame (%d)",
7704                                    ret);
7705                         return;
7706                 }
7707                 switch (iter.this_arg_index) {
7708                 case IEEE80211_RADIOTAP_FLAGS:
7709                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
7710                                 len -= 4;
7711                         break;
7712                 case IEEE80211_RADIOTAP_RX_FLAGS:
7713                         rxflags = 1;
7714                         break;
7715                 case IEEE80211_RADIOTAP_TX_FLAGS:
7716                         injected = 1;
7717                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
7718                                         IEEE80211_RADIOTAP_F_TX_FAIL;
7719                         break;
7720                 case IEEE80211_RADIOTAP_DATA_RETRIES:
7721                         break;
7722                 case IEEE80211_RADIOTAP_CHANNEL:
7723                         /* TODO: convert from freq/flags to channel number */
7724                         break;
7725                 case IEEE80211_RADIOTAP_RATE:
7726                         datarate = *iter.this_arg * 5;
7727                         break;
7728                 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL:
7729                         ssi_signal = (s8) *iter.this_arg;
7730                         break;
7731                 }
7732         }
7733
7734         if (rxflags && injected)
7735                 return;
7736
7737         if (!injected)
7738                 handle_frame(drv, buf + iter.max_length,
7739                              len - iter.max_length, datarate, ssi_signal);
7740         else
7741                 handle_tx_callback(drv->ctx, buf + iter.max_length,
7742                                    len - iter.max_length, !failed);
7743 }
7744
7745
7746 /*
7747  * we post-process the filter code later and rewrite
7748  * this to the offset to the last instruction
7749  */
7750 #define PASS    0xFF
7751 #define FAIL    0xFE
7752
7753 static struct sock_filter msock_filter_insns[] = {
7754         /*
7755          * do a little-endian load of the radiotap length field
7756          */
7757         /* load lower byte into A */
7758         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
7759         /* put it into X (== index register) */
7760         BPF_STMT(BPF_MISC| BPF_TAX, 0),
7761         /* load upper byte into A */
7762         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
7763         /* left-shift it by 8 */
7764         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
7765         /* or with X */
7766         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
7767         /* put result into X */
7768         BPF_STMT(BPF_MISC| BPF_TAX, 0),
7769
7770         /*
7771          * Allow management frames through, this also gives us those
7772          * management frames that we sent ourselves with status
7773          */
7774         /* load the lower byte of the IEEE 802.11 frame control field */
7775         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
7776         /* mask off frame type and version */
7777         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
7778         /* accept frame if it's both 0, fall through otherwise */
7779         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
7780
7781         /*
7782          * TODO: add a bit to radiotap RX flags that indicates
7783          * that the sending station is not associated, then
7784          * add a filter here that filters on our DA and that flag
7785          * to allow us to deauth frames to that bad station.
7786          *
7787          * For now allow all To DS data frames through.
7788          */
7789         /* load the IEEE 802.11 frame control field */
7790         BPF_STMT(BPF_LD  | BPF_H | BPF_IND, 0),
7791         /* mask off frame type, version and DS status */
7792         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
7793         /* accept frame if version 0, type 2 and To DS, fall through otherwise
7794          */
7795         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
7796
7797 #if 0
7798         /*
7799          * drop non-data frames
7800          */
7801         /* load the lower byte of the frame control field */
7802         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
7803         /* mask off QoS bit */
7804         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
7805         /* drop non-data frames */
7806         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
7807 #endif
7808         /* load the upper byte of the frame control field */
7809         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
7810         /* mask off toDS/fromDS */
7811         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
7812         /* accept WDS frames */
7813         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
7814
7815         /*
7816          * add header length to index
7817          */
7818         /* load the lower byte of the frame control field */
7819         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
7820         /* mask off QoS bit */
7821         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
7822         /* right shift it by 6 to give 0 or 2 */
7823         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
7824         /* add data frame header length */
7825         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
7826         /* add index, was start of 802.11 header */
7827         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
7828         /* move to index, now start of LL header */
7829         BPF_STMT(BPF_MISC | BPF_TAX, 0),
7830
7831         /*
7832          * Accept empty data frames, we use those for
7833          * polling activity.
7834          */
7835         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
7836         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
7837
7838         /*
7839          * Accept EAPOL frames
7840          */
7841         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
7842         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
7843         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
7844         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
7845
7846         /* keep these last two statements or change the code below */
7847         /* return 0 == "DROP" */
7848         BPF_STMT(BPF_RET | BPF_K, 0),
7849         /* return ~0 == "keep all" */
7850         BPF_STMT(BPF_RET | BPF_K, ~0),
7851 };
7852
7853 static struct sock_fprog msock_filter = {
7854         .len = ARRAY_SIZE(msock_filter_insns),
7855         .filter = msock_filter_insns,
7856 };
7857
7858
7859 static int add_monitor_filter(int s)
7860 {
7861         int idx;
7862
7863         /* rewrite all PASS/FAIL jump offsets */
7864         for (idx = 0; idx < msock_filter.len; idx++) {
7865                 struct sock_filter *insn = &msock_filter_insns[idx];
7866
7867                 if (BPF_CLASS(insn->code) == BPF_JMP) {
7868                         if (insn->code == (BPF_JMP|BPF_JA)) {
7869                                 if (insn->k == PASS)
7870                                         insn->k = msock_filter.len - idx - 2;
7871                                 else if (insn->k == FAIL)
7872                                         insn->k = msock_filter.len - idx - 3;
7873                         }
7874
7875                         if (insn->jt == PASS)
7876                                 insn->jt = msock_filter.len - idx - 2;
7877                         else if (insn->jt == FAIL)
7878                                 insn->jt = msock_filter.len - idx - 3;
7879
7880                         if (insn->jf == PASS)
7881                                 insn->jf = msock_filter.len - idx - 2;
7882                         else if (insn->jf == FAIL)
7883                                 insn->jf = msock_filter.len - idx - 3;
7884                 }
7885         }
7886
7887         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
7888                        &msock_filter, sizeof(msock_filter))) {
7889                 wpa_printf(MSG_ERROR, "nl80211: setsockopt(SO_ATTACH_FILTER) failed: %s",
7890                            strerror(errno));
7891                 return -1;
7892         }
7893
7894         return 0;
7895 }
7896
7897
7898 static void nl80211_remove_monitor_interface(
7899         struct wpa_driver_nl80211_data *drv)
7900 {
7901         if (drv->monitor_refcount > 0)
7902                 drv->monitor_refcount--;
7903         wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface: refcount=%d",
7904                    drv->monitor_refcount);
7905         if (drv->monitor_refcount > 0)
7906                 return;
7907
7908         if (drv->monitor_ifidx >= 0) {
7909                 nl80211_remove_iface(drv, drv->monitor_ifidx);
7910                 drv->monitor_ifidx = -1;
7911         }
7912         if (drv->monitor_sock >= 0) {
7913                 eloop_unregister_read_sock(drv->monitor_sock);
7914                 close(drv->monitor_sock);
7915                 drv->monitor_sock = -1;
7916         }
7917 }
7918
7919
7920 static int
7921 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
7922 {
7923         char buf[IFNAMSIZ];
7924         struct sockaddr_ll ll;
7925         int optval;
7926         socklen_t optlen;
7927
7928         if (drv->monitor_ifidx >= 0) {
7929                 drv->monitor_refcount++;
7930                 wpa_printf(MSG_DEBUG, "nl80211: Re-use existing monitor interface: refcount=%d",
7931                            drv->monitor_refcount);
7932                 return 0;
7933         }
7934
7935         if (os_strncmp(drv->first_bss->ifname, "p2p-", 4) == 0) {
7936                 /*
7937                  * P2P interface name is of the format p2p-%s-%d. For monitor
7938                  * interface name corresponding to P2P GO, replace "p2p-" with
7939                  * "mon-" to retain the same interface name length and to
7940                  * indicate that it is a monitor interface.
7941                  */
7942                 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss->ifname + 4);
7943         } else {
7944                 /* Non-P2P interface with AP functionality. */
7945                 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss->ifname);
7946         }
7947
7948         buf[IFNAMSIZ - 1] = '\0';
7949
7950         drv->monitor_ifidx =
7951                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
7952                                      0, NULL, NULL, 0);
7953
7954         if (drv->monitor_ifidx == -EOPNOTSUPP) {
7955                 /*
7956                  * This is backward compatibility for a few versions of
7957                  * the kernel only that didn't advertise the right
7958                  * attributes for the only driver that then supported
7959                  * AP mode w/o monitor -- ath6kl.
7960                  */
7961                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
7962                            "monitor interface type - try to run without it");
7963                 drv->device_ap_sme = 1;
7964         }
7965
7966         if (drv->monitor_ifidx < 0)
7967                 return -1;
7968
7969         if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
7970                 goto error;
7971
7972         memset(&ll, 0, sizeof(ll));
7973         ll.sll_family = AF_PACKET;
7974         ll.sll_ifindex = drv->monitor_ifidx;
7975         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
7976         if (drv->monitor_sock < 0) {
7977                 wpa_printf(MSG_ERROR, "nl80211: socket[PF_PACKET,SOCK_RAW] failed: %s",
7978                            strerror(errno));
7979                 goto error;
7980         }
7981
7982         if (add_monitor_filter(drv->monitor_sock)) {
7983                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
7984                            "interface; do filtering in user space");
7985                 /* This works, but will cost in performance. */
7986         }
7987
7988         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
7989                 wpa_printf(MSG_ERROR, "nl80211: monitor socket bind failed: %s",
7990                            strerror(errno));
7991                 goto error;
7992         }
7993
7994         optlen = sizeof(optval);
7995         optval = 20;
7996         if (setsockopt
7997             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
7998                 wpa_printf(MSG_ERROR, "nl80211: Failed to set socket priority: %s",
7999                            strerror(errno));
8000                 goto error;
8001         }
8002
8003         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
8004                                      drv, NULL)) {
8005                 wpa_printf(MSG_INFO, "nl80211: Could not register monitor read socket");
8006                 goto error;
8007         }
8008
8009         drv->monitor_refcount++;
8010         return 0;
8011  error:
8012         nl80211_remove_monitor_interface(drv);
8013         return -1;
8014 }
8015
8016
8017 static int nl80211_setup_ap(struct i802_bss *bss)
8018 {
8019         struct wpa_driver_nl80211_data *drv = bss->drv;
8020
8021         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
8022                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
8023
8024         /*
8025          * Disable Probe Request reporting unless we need it in this way for
8026          * devices that include the AP SME, in the other case (unless using
8027          * monitor iface) we'll get it through the nl_mgmt socket instead.
8028          */
8029         if (!drv->device_ap_sme)
8030                 wpa_driver_nl80211_probe_req_report(bss, 0);
8031
8032         if (!drv->device_ap_sme && !drv->use_monitor)
8033                 if (nl80211_mgmt_subscribe_ap(bss))
8034                         return -1;
8035
8036         if (drv->device_ap_sme && !drv->use_monitor)
8037                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
8038                         return -1;
8039
8040         if (!drv->device_ap_sme && drv->use_monitor &&
8041             nl80211_create_monitor_interface(drv) &&
8042             !drv->device_ap_sme)
8043                 return -1;
8044
8045         if (drv->device_ap_sme &&
8046             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
8047                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
8048                            "Probe Request frame reporting in AP mode");
8049                 /* Try to survive without this */
8050         }
8051
8052         return 0;
8053 }
8054
8055
8056 static void nl80211_teardown_ap(struct i802_bss *bss)
8057 {
8058         struct wpa_driver_nl80211_data *drv = bss->drv;
8059
8060         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
8061                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
8062         if (drv->device_ap_sme) {
8063                 wpa_driver_nl80211_probe_req_report(bss, 0);
8064                 if (!drv->use_monitor)
8065                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
8066         } else if (drv->use_monitor)
8067                 nl80211_remove_monitor_interface(drv);
8068         else
8069                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
8070
8071         bss->beacon_set = 0;
8072 }
8073
8074
8075 static int nl80211_send_eapol_data(struct i802_bss *bss,
8076                                    const u8 *addr, const u8 *data,
8077                                    size_t data_len)
8078 {
8079         struct sockaddr_ll ll;
8080         int ret;
8081
8082         if (bss->drv->eapol_tx_sock < 0) {
8083                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
8084                 return -1;
8085         }
8086
8087         os_memset(&ll, 0, sizeof(ll));
8088         ll.sll_family = AF_PACKET;
8089         ll.sll_ifindex = bss->ifindex;
8090         ll.sll_protocol = htons(ETH_P_PAE);
8091         ll.sll_halen = ETH_ALEN;
8092         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
8093         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
8094                      (struct sockaddr *) &ll, sizeof(ll));
8095         if (ret < 0)
8096                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
8097                            strerror(errno));
8098
8099         return ret;
8100 }
8101
8102
8103 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
8104
8105 static int wpa_driver_nl80211_hapd_send_eapol(
8106         void *priv, const u8 *addr, const u8 *data,
8107         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
8108 {
8109         struct i802_bss *bss = priv;
8110         struct wpa_driver_nl80211_data *drv = bss->drv;
8111         struct ieee80211_hdr *hdr;
8112         size_t len;
8113         u8 *pos;
8114         int res;
8115         int qos = flags & WPA_STA_WMM;
8116
8117         if (drv->device_ap_sme || !drv->use_monitor)
8118                 return nl80211_send_eapol_data(bss, addr, data, data_len);
8119
8120         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
8121                 data_len;
8122         hdr = os_zalloc(len);
8123         if (hdr == NULL) {
8124                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
8125                            (unsigned long) len);
8126                 return -1;
8127         }
8128
8129         hdr->frame_control =
8130                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
8131         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
8132         if (encrypt)
8133                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
8134         if (qos) {
8135                 hdr->frame_control |=
8136                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
8137         }
8138
8139         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
8140         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
8141         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
8142         pos = (u8 *) (hdr + 1);
8143
8144         if (qos) {
8145                 /* Set highest priority in QoS header */
8146                 pos[0] = 7;
8147                 pos[1] = 0;
8148                 pos += 2;
8149         }
8150
8151         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
8152         pos += sizeof(rfc1042_header);
8153         WPA_PUT_BE16(pos, ETH_P_PAE);
8154         pos += 2;
8155         memcpy(pos, data, data_len);
8156
8157         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
8158                                             0, 0, 0, 0);
8159         if (res < 0) {
8160                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
8161                            "failed: %d (%s)",
8162                            (unsigned long) len, errno, strerror(errno));
8163         }
8164         os_free(hdr);
8165
8166         return res;
8167 }
8168
8169
8170 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
8171                                             int total_flags,
8172                                             int flags_or, int flags_and)
8173 {
8174         struct i802_bss *bss = priv;
8175         struct wpa_driver_nl80211_data *drv = bss->drv;
8176         struct nl_msg *msg;
8177         struct nlattr *flags;
8178         struct nl80211_sta_flag_update upd;
8179
8180         msg = nlmsg_alloc();
8181         if (!msg)
8182                 return -ENOMEM;
8183
8184         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
8185
8186         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
8187                     if_nametoindex(bss->ifname));
8188         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8189
8190         /*
8191          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
8192          * can be removed eventually.
8193          */
8194         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
8195         if (!flags)
8196                 goto nla_put_failure;
8197         if (total_flags & WPA_STA_AUTHORIZED)
8198                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED);
8199
8200         if (total_flags & WPA_STA_WMM)
8201                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME);
8202
8203         if (total_flags & WPA_STA_SHORT_PREAMBLE)
8204                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE);
8205
8206         if (total_flags & WPA_STA_MFP)
8207                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP);
8208
8209         if (total_flags & WPA_STA_TDLS_PEER)
8210                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER);
8211
8212         nla_nest_end(msg, flags);
8213
8214         os_memset(&upd, 0, sizeof(upd));
8215         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
8216         upd.set = sta_flags_nl80211(flags_or);
8217         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
8218
8219         return send_and_recv_msgs(drv, msg, NULL, NULL);
8220  nla_put_failure:
8221         nlmsg_free(msg);
8222         return -ENOBUFS;
8223 }
8224
8225
8226 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
8227                                  struct wpa_driver_associate_params *params)
8228 {
8229         enum nl80211_iftype nlmode, old_mode;
8230         struct hostapd_freq_params freq = {
8231                 .freq = params->freq,
8232         };
8233
8234         if (params->p2p) {
8235                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
8236                            "group (GO)");
8237                 nlmode = NL80211_IFTYPE_P2P_GO;
8238         } else
8239                 nlmode = NL80211_IFTYPE_AP;
8240
8241         old_mode = drv->nlmode;
8242         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
8243                 nl80211_remove_monitor_interface(drv);
8244                 return -1;
8245         }
8246
8247         if (wpa_driver_nl80211_set_freq(drv->first_bss, &freq)) {
8248                 if (old_mode != nlmode)
8249                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
8250                 nl80211_remove_monitor_interface(drv);
8251                 return -1;
8252         }
8253
8254         return 0;
8255 }
8256
8257
8258 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
8259 {
8260         struct nl_msg *msg;
8261         int ret = -1;
8262
8263         msg = nlmsg_alloc();
8264         if (!msg)
8265                 return -1;
8266
8267         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
8268         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8269         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8270         msg = NULL;
8271         if (ret) {
8272                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
8273                            "(%s)", ret, strerror(-ret));
8274                 goto nla_put_failure;
8275         }
8276
8277         ret = 0;
8278         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
8279
8280 nla_put_failure:
8281         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8282                                         NL80211_IFTYPE_STATION)) {
8283                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
8284                            "station mode");
8285         }
8286
8287         nlmsg_free(msg);
8288         return ret;
8289 }
8290
8291
8292 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
8293                                    struct wpa_driver_associate_params *params)
8294 {
8295         struct nl_msg *msg;
8296         int ret = -1;
8297         int count = 0;
8298
8299         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
8300
8301         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8302                                         NL80211_IFTYPE_ADHOC)) {
8303                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
8304                            "IBSS mode");
8305                 return -1;
8306         }
8307
8308 retry:
8309         msg = nlmsg_alloc();
8310         if (!msg)
8311                 return -1;
8312
8313         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
8314         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8315
8316         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
8317                 goto nla_put_failure;
8318
8319         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
8320                           params->ssid, params->ssid_len);
8321         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
8322                 params->ssid);
8323         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
8324         drv->ssid_len = params->ssid_len;
8325
8326         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
8327         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
8328
8329         ret = nl80211_set_conn_keys(params, msg);
8330         if (ret)
8331                 goto nla_put_failure;
8332
8333         if (params->bssid && params->fixed_bssid) {
8334                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
8335                            MAC2STR(params->bssid));
8336                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
8337         }
8338
8339         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
8340             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
8341             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
8342             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
8343                 wpa_printf(MSG_DEBUG, "  * control port");
8344                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
8345         }
8346
8347         if (params->wpa_ie) {
8348                 wpa_hexdump(MSG_DEBUG,
8349                             "  * Extra IEs for Beacon/Probe Response frames",
8350                             params->wpa_ie, params->wpa_ie_len);
8351                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
8352                         params->wpa_ie);
8353         }
8354
8355         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8356         msg = NULL;
8357         if (ret) {
8358                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
8359                            ret, strerror(-ret));
8360                 count++;
8361                 if (ret == -EALREADY && count == 1) {
8362                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
8363                                    "forced leave");
8364                         nl80211_leave_ibss(drv);
8365                         nlmsg_free(msg);
8366                         goto retry;
8367                 }
8368
8369                 goto nla_put_failure;
8370         }
8371         ret = 0;
8372         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
8373
8374 nla_put_failure:
8375         nlmsg_free(msg);
8376         return ret;
8377 }
8378
8379
8380 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
8381                                   struct wpa_driver_associate_params *params,
8382                                   struct nl_msg *msg)
8383 {
8384         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8385
8386         if (params->bssid) {
8387                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
8388                            MAC2STR(params->bssid));
8389                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
8390         }
8391
8392         if (params->freq) {
8393                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
8394                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
8395                 drv->assoc_freq = params->freq;
8396         } else
8397                 drv->assoc_freq = 0;
8398
8399         if (params->bg_scan_period >= 0) {
8400                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
8401                            params->bg_scan_period);
8402                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
8403                             params->bg_scan_period);
8404         }
8405
8406         if (params->ssid) {
8407                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
8408                                   params->ssid, params->ssid_len);
8409                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
8410                         params->ssid);
8411                 if (params->ssid_len > sizeof(drv->ssid))
8412                         goto nla_put_failure;
8413                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
8414                 drv->ssid_len = params->ssid_len;
8415         }
8416
8417         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
8418         if (params->wpa_ie)
8419                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
8420                         params->wpa_ie);
8421
8422         if (params->wpa_proto) {
8423                 enum nl80211_wpa_versions ver = 0;
8424
8425                 if (params->wpa_proto & WPA_PROTO_WPA)
8426                         ver |= NL80211_WPA_VERSION_1;
8427                 if (params->wpa_proto & WPA_PROTO_RSN)
8428                         ver |= NL80211_WPA_VERSION_2;
8429
8430                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
8431                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
8432         }
8433
8434         if (params->pairwise_suite != WPA_CIPHER_NONE) {
8435                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
8436                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
8437                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
8438         }
8439
8440         if (params->group_suite != WPA_CIPHER_NONE) {
8441                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
8442                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
8443                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
8444         }
8445
8446         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
8447             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
8448             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
8449             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
8450             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM) {
8451                 int mgmt = WLAN_AKM_SUITE_PSK;
8452
8453                 switch (params->key_mgmt_suite) {
8454                 case WPA_KEY_MGMT_CCKM:
8455                         mgmt = WLAN_AKM_SUITE_CCKM;
8456                         break;
8457                 case WPA_KEY_MGMT_IEEE8021X:
8458                         mgmt = WLAN_AKM_SUITE_8021X;
8459                         break;
8460                 case WPA_KEY_MGMT_FT_IEEE8021X:
8461                         mgmt = WLAN_AKM_SUITE_FT_8021X;
8462                         break;
8463                 case WPA_KEY_MGMT_FT_PSK:
8464                         mgmt = WLAN_AKM_SUITE_FT_PSK;
8465                         break;
8466                 case WPA_KEY_MGMT_PSK:
8467                 default:
8468                         mgmt = WLAN_AKM_SUITE_PSK;
8469                         break;
8470                 }
8471                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
8472         }
8473
8474         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
8475
8476         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
8477                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
8478
8479         if (params->disable_ht)
8480                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
8481
8482         if (params->htcaps && params->htcaps_mask) {
8483                 int sz = sizeof(struct ieee80211_ht_capabilities);
8484                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
8485                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
8486                         params->htcaps_mask);
8487         }
8488
8489 #ifdef CONFIG_VHT_OVERRIDES
8490         if (params->disable_vht) {
8491                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
8492                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT);
8493         }
8494
8495         if (params->vhtcaps && params->vhtcaps_mask) {
8496                 int sz = sizeof(struct ieee80211_vht_capabilities);
8497                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps);
8498                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
8499                         params->vhtcaps_mask);
8500         }
8501 #endif /* CONFIG_VHT_OVERRIDES */
8502
8503         if (params->p2p)
8504                 wpa_printf(MSG_DEBUG, "  * P2P group");
8505
8506         return 0;
8507 nla_put_failure:
8508         return -1;
8509 }
8510
8511
8512 static int wpa_driver_nl80211_try_connect(
8513         struct wpa_driver_nl80211_data *drv,
8514         struct wpa_driver_associate_params *params)
8515 {
8516         struct nl_msg *msg;
8517         enum nl80211_auth_type type;
8518         int ret;
8519         int algs;
8520
8521         msg = nlmsg_alloc();
8522         if (!msg)
8523                 return -1;
8524
8525         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
8526         nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
8527
8528         ret = nl80211_connect_common(drv, params, msg);
8529         if (ret)
8530                 goto nla_put_failure;
8531
8532         algs = 0;
8533         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
8534                 algs++;
8535         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
8536                 algs++;
8537         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
8538                 algs++;
8539         if (algs > 1) {
8540                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
8541                            "selection");
8542                 goto skip_auth_type;
8543         }
8544
8545         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
8546                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
8547         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
8548                 type = NL80211_AUTHTYPE_SHARED_KEY;
8549         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
8550                 type = NL80211_AUTHTYPE_NETWORK_EAP;
8551         else if (params->auth_alg & WPA_AUTH_ALG_FT)
8552                 type = NL80211_AUTHTYPE_FT;
8553         else
8554                 goto nla_put_failure;
8555
8556         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
8557         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
8558
8559 skip_auth_type:
8560         ret = nl80211_set_conn_keys(params, msg);
8561         if (ret)
8562                 goto nla_put_failure;
8563
8564         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8565         msg = NULL;
8566         if (ret) {
8567                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
8568                            "(%s)", ret, strerror(-ret));
8569                 goto nla_put_failure;
8570         }
8571         ret = 0;
8572         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
8573
8574 nla_put_failure:
8575         nlmsg_free(msg);
8576         return ret;
8577
8578 }
8579
8580
8581 static int wpa_driver_nl80211_connect(
8582         struct wpa_driver_nl80211_data *drv,
8583         struct wpa_driver_associate_params *params)
8584 {
8585         int ret = wpa_driver_nl80211_try_connect(drv, params);
8586         if (ret == -EALREADY) {
8587                 /*
8588                  * cfg80211 does not currently accept new connections if
8589                  * we are already connected. As a workaround, force
8590                  * disconnection and try again.
8591                  */
8592                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
8593                            "disconnecting before reassociation "
8594                            "attempt");
8595                 if (wpa_driver_nl80211_disconnect(
8596                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
8597                         return -1;
8598                 ret = wpa_driver_nl80211_try_connect(drv, params);
8599         }
8600         return ret;
8601 }
8602
8603
8604 static int wpa_driver_nl80211_associate(
8605         void *priv, struct wpa_driver_associate_params *params)
8606 {
8607         struct i802_bss *bss = priv;
8608         struct wpa_driver_nl80211_data *drv = bss->drv;
8609         int ret;
8610         struct nl_msg *msg;
8611
8612         if (params->mode == IEEE80211_MODE_AP)
8613                 return wpa_driver_nl80211_ap(drv, params);
8614
8615         if (params->mode == IEEE80211_MODE_IBSS)
8616                 return wpa_driver_nl80211_ibss(drv, params);
8617
8618         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
8619                 enum nl80211_iftype nlmode = params->p2p ?
8620                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
8621
8622                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
8623                         return -1;
8624                 return wpa_driver_nl80211_connect(drv, params);
8625         }
8626
8627         nl80211_mark_disconnected(drv);
8628
8629         msg = nlmsg_alloc();
8630         if (!msg)
8631                 return -1;
8632
8633         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
8634                    drv->ifindex);
8635         nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
8636
8637         ret = nl80211_connect_common(drv, params, msg);
8638         if (ret)
8639                 goto nla_put_failure;
8640
8641         if (params->prev_bssid) {
8642                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
8643                            MAC2STR(params->prev_bssid));
8644                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
8645                         params->prev_bssid);
8646         }
8647
8648         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8649         msg = NULL;
8650         if (ret) {
8651                 wpa_dbg(drv->ctx, MSG_DEBUG,
8652                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
8653                         ret, strerror(-ret));
8654                 nl80211_dump_scan(drv);
8655                 goto nla_put_failure;
8656         }
8657         ret = 0;
8658         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
8659                    "successfully");
8660
8661 nla_put_failure:
8662         nlmsg_free(msg);
8663         return ret;
8664 }
8665
8666
8667 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
8668                             int ifindex, enum nl80211_iftype mode)
8669 {
8670         struct nl_msg *msg;
8671         int ret = -ENOBUFS;
8672
8673         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
8674                    ifindex, mode, nl80211_iftype_str(mode));
8675
8676         msg = nlmsg_alloc();
8677         if (!msg)
8678                 return -ENOMEM;
8679
8680         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
8681         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
8682                 goto nla_put_failure;
8683         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
8684
8685         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8686         msg = NULL;
8687         if (!ret)
8688                 return 0;
8689 nla_put_failure:
8690         nlmsg_free(msg);
8691         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
8692                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
8693         return ret;
8694 }
8695
8696
8697 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
8698                                        enum nl80211_iftype nlmode)
8699 {
8700         struct wpa_driver_nl80211_data *drv = bss->drv;
8701         int ret = -1;
8702         int i;
8703         int was_ap = is_ap_interface(drv->nlmode);
8704         int res;
8705
8706         res = nl80211_set_mode(drv, drv->ifindex, nlmode);
8707         if (res && nlmode == nl80211_get_ifmode(bss))
8708                 res = 0;
8709
8710         if (res == 0) {
8711                 drv->nlmode = nlmode;
8712                 ret = 0;
8713                 goto done;
8714         }
8715
8716         if (res == -ENODEV)
8717                 return -1;
8718
8719         if (nlmode == drv->nlmode) {
8720                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
8721                            "requested mode - ignore error");
8722                 ret = 0;
8723                 goto done; /* Already in the requested mode */
8724         }
8725
8726         /* mac80211 doesn't allow mode changes while the device is up, so
8727          * take the device down, try to set the mode again, and bring the
8728          * device back up.
8729          */
8730         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
8731                    "interface down");
8732         for (i = 0; i < 10; i++) {
8733                 res = i802_set_iface_flags(bss, 0);
8734                 if (res == -EACCES || res == -ENODEV)
8735                         break;
8736                 if (res == 0) {
8737                         /* Try to set the mode again while the interface is
8738                          * down */
8739                         ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
8740                         if (ret == -EACCES)
8741                                 break;
8742                         res = i802_set_iface_flags(bss, 1);
8743                         if (res && !ret)
8744                                 ret = -1;
8745                         else if (ret != -EBUSY)
8746                                 break;
8747                 } else
8748                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
8749                                    "interface down");
8750                 os_sleep(0, 100000);
8751         }
8752
8753         if (!ret) {
8754                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
8755                            "interface is down");
8756                 drv->nlmode = nlmode;
8757                 drv->ignore_if_down_event = 1;
8758         }
8759
8760 done:
8761         if (ret) {
8762                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
8763                            "from %d failed", nlmode, drv->nlmode);
8764                 return ret;
8765         }
8766
8767         if (is_p2p_net_interface(nlmode))
8768                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
8769         else if (drv->disabled_11b_rates)
8770                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
8771
8772         if (is_ap_interface(nlmode)) {
8773                 nl80211_mgmt_unsubscribe(bss, "start AP");
8774                 /* Setup additional AP mode functionality if needed */
8775                 if (nl80211_setup_ap(bss))
8776                         return -1;
8777         } else if (was_ap) {
8778                 /* Remove additional AP mode functionality */
8779                 nl80211_teardown_ap(bss);
8780         } else {
8781                 nl80211_mgmt_unsubscribe(bss, "mode change");
8782         }
8783
8784         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
8785             nl80211_mgmt_subscribe_non_ap(bss) < 0)
8786                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
8787                            "frame processing - ignore for now");
8788
8789         return 0;
8790 }
8791
8792
8793 static int wpa_driver_nl80211_get_capa(void *priv,
8794                                        struct wpa_driver_capa *capa)
8795 {
8796         struct i802_bss *bss = priv;
8797         struct wpa_driver_nl80211_data *drv = bss->drv;
8798         if (!drv->has_capability)
8799                 return -1;
8800         os_memcpy(capa, &drv->capa, sizeof(*capa));
8801         if (drv->extended_capa && drv->extended_capa_mask) {
8802                 capa->extended_capa = drv->extended_capa;
8803                 capa->extended_capa_mask = drv->extended_capa_mask;
8804                 capa->extended_capa_len = drv->extended_capa_len;
8805         }
8806
8807         if ((capa->flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
8808             !drv->allow_p2p_device) {
8809                 wpa_printf(MSG_DEBUG, "nl80211: Do not indicate P2P_DEVICE support (p2p_device=1 driver param not specified)");
8810                 capa->flags &= ~WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
8811         }
8812
8813         return 0;
8814 }
8815
8816
8817 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
8818 {
8819         struct i802_bss *bss = priv;
8820         struct wpa_driver_nl80211_data *drv = bss->drv;
8821
8822         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
8823                    bss->ifname, drv->operstate, state,
8824                    state ? "UP" : "DORMANT");
8825         drv->operstate = state;
8826         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
8827                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
8828 }
8829
8830
8831 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
8832 {
8833         struct i802_bss *bss = priv;
8834         struct wpa_driver_nl80211_data *drv = bss->drv;
8835         struct nl_msg *msg;
8836         struct nl80211_sta_flag_update upd;
8837         int ret = -ENOBUFS;
8838
8839         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
8840                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
8841                 return 0;
8842         }
8843
8844         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
8845                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
8846
8847         msg = nlmsg_alloc();
8848         if (!msg)
8849                 return -ENOMEM;
8850
8851         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
8852
8853         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
8854                     if_nametoindex(bss->ifname));
8855         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
8856
8857         os_memset(&upd, 0, sizeof(upd));
8858         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
8859         if (authorized)
8860                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
8861         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
8862
8863         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8864         msg = NULL;
8865         if (!ret)
8866                 return 0;
8867  nla_put_failure:
8868         nlmsg_free(msg);
8869         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
8870                    ret, strerror(-ret));
8871         return ret;
8872 }
8873
8874
8875 /* Set kernel driver on given frequency (MHz) */
8876 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
8877 {
8878         struct i802_bss *bss = priv;
8879         return wpa_driver_nl80211_set_freq(bss, freq);
8880 }
8881
8882
8883 static inline int min_int(int a, int b)
8884 {
8885         if (a < b)
8886                 return a;
8887         return b;
8888 }
8889
8890
8891 static int get_key_handler(struct nl_msg *msg, void *arg)
8892 {
8893         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8894         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8895
8896         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8897                   genlmsg_attrlen(gnlh, 0), NULL);
8898
8899         /*
8900          * TODO: validate the key index and mac address!
8901          * Otherwise, there's a race condition as soon as
8902          * the kernel starts sending key notifications.
8903          */
8904
8905         if (tb[NL80211_ATTR_KEY_SEQ])
8906                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
8907                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
8908         return NL_SKIP;
8909 }
8910
8911
8912 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
8913                            int idx, u8 *seq)
8914 {
8915         struct i802_bss *bss = priv;
8916         struct wpa_driver_nl80211_data *drv = bss->drv;
8917         struct nl_msg *msg;
8918
8919         msg = nlmsg_alloc();
8920         if (!msg)
8921                 return -ENOMEM;
8922
8923         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
8924
8925         if (addr)
8926                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8927         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
8928         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
8929
8930         memset(seq, 0, 6);
8931
8932         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
8933  nla_put_failure:
8934         nlmsg_free(msg);
8935         return -ENOBUFS;
8936 }
8937
8938
8939 static int i802_set_rts(void *priv, int rts)
8940 {
8941         struct i802_bss *bss = priv;
8942         struct wpa_driver_nl80211_data *drv = bss->drv;
8943         struct nl_msg *msg;
8944         int ret = -ENOBUFS;
8945         u32 val;
8946
8947         msg = nlmsg_alloc();
8948         if (!msg)
8949                 return -ENOMEM;
8950
8951         if (rts >= 2347)
8952                 val = (u32) -1;
8953         else
8954                 val = rts;
8955
8956         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
8957         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8958         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
8959
8960         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8961         msg = NULL;
8962         if (!ret)
8963                 return 0;
8964 nla_put_failure:
8965         nlmsg_free(msg);
8966         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
8967                    "%d (%s)", rts, ret, strerror(-ret));
8968         return ret;
8969 }
8970
8971
8972 static int i802_set_frag(void *priv, int frag)
8973 {
8974         struct i802_bss *bss = priv;
8975         struct wpa_driver_nl80211_data *drv = bss->drv;
8976         struct nl_msg *msg;
8977         int ret = -ENOBUFS;
8978         u32 val;
8979
8980         msg = nlmsg_alloc();
8981         if (!msg)
8982                 return -ENOMEM;
8983
8984         if (frag >= 2346)
8985                 val = (u32) -1;
8986         else
8987                 val = frag;
8988
8989         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
8990         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8991         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
8992
8993         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8994         msg = NULL;
8995         if (!ret)
8996                 return 0;
8997 nla_put_failure:
8998         nlmsg_free(msg);
8999         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
9000                    "%d: %d (%s)", frag, ret, strerror(-ret));
9001         return ret;
9002 }
9003
9004
9005 static int i802_flush(void *priv)
9006 {
9007         struct i802_bss *bss = priv;
9008         struct wpa_driver_nl80211_data *drv = bss->drv;
9009         struct nl_msg *msg;
9010         int res;
9011
9012         msg = nlmsg_alloc();
9013         if (!msg)
9014                 return -1;
9015
9016         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
9017                    bss->ifname);
9018         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
9019
9020         /*
9021          * XXX: FIX! this needs to flush all VLANs too
9022          */
9023         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
9024                     if_nametoindex(bss->ifname));
9025
9026         res = send_and_recv_msgs(drv, msg, NULL, NULL);
9027         if (res) {
9028                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
9029                            "(%s)", res, strerror(-res));
9030         }
9031         return res;
9032  nla_put_failure:
9033         nlmsg_free(msg);
9034         return -ENOBUFS;
9035 }
9036
9037
9038 static int get_sta_handler(struct nl_msg *msg, void *arg)
9039 {
9040         struct nlattr *tb[NL80211_ATTR_MAX + 1];
9041         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
9042         struct hostap_sta_driver_data *data = arg;
9043         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
9044         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
9045                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
9046                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
9047                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
9048                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
9049                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
9050                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
9051         };
9052
9053         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
9054                   genlmsg_attrlen(gnlh, 0), NULL);
9055
9056         /*
9057          * TODO: validate the interface and mac address!
9058          * Otherwise, there's a race condition as soon as
9059          * the kernel starts sending station notifications.
9060          */
9061
9062         if (!tb[NL80211_ATTR_STA_INFO]) {
9063                 wpa_printf(MSG_DEBUG, "sta stats missing!");
9064                 return NL_SKIP;
9065         }
9066         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
9067                              tb[NL80211_ATTR_STA_INFO],
9068                              stats_policy)) {
9069                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
9070                 return NL_SKIP;
9071         }
9072
9073         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
9074                 data->inactive_msec =
9075                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
9076         if (stats[NL80211_STA_INFO_RX_BYTES])
9077                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
9078         if (stats[NL80211_STA_INFO_TX_BYTES])
9079                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
9080         if (stats[NL80211_STA_INFO_RX_PACKETS])
9081                 data->rx_packets =
9082                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
9083         if (stats[NL80211_STA_INFO_TX_PACKETS])
9084                 data->tx_packets =
9085                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
9086         if (stats[NL80211_STA_INFO_TX_FAILED])
9087                 data->tx_retry_failed =
9088                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
9089
9090         return NL_SKIP;
9091 }
9092
9093 static int i802_read_sta_data(struct i802_bss *bss,
9094                               struct hostap_sta_driver_data *data,
9095                               const u8 *addr)
9096 {
9097         struct wpa_driver_nl80211_data *drv = bss->drv;
9098         struct nl_msg *msg;
9099
9100         os_memset(data, 0, sizeof(*data));
9101         msg = nlmsg_alloc();
9102         if (!msg)
9103                 return -ENOMEM;
9104
9105         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
9106
9107         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
9108         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
9109
9110         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
9111  nla_put_failure:
9112         nlmsg_free(msg);
9113         return -ENOBUFS;
9114 }
9115
9116
9117 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
9118                                     int cw_min, int cw_max, int burst_time)
9119 {
9120         struct i802_bss *bss = priv;
9121         struct wpa_driver_nl80211_data *drv = bss->drv;
9122         struct nl_msg *msg;
9123         struct nlattr *txq, *params;
9124
9125         msg = nlmsg_alloc();
9126         if (!msg)
9127                 return -1;
9128
9129         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
9130
9131         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
9132
9133         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
9134         if (!txq)
9135                 goto nla_put_failure;
9136
9137         /* We are only sending parameters for a single TXQ at a time */
9138         params = nla_nest_start(msg, 1);
9139         if (!params)
9140                 goto nla_put_failure;
9141
9142         switch (queue) {
9143         case 0:
9144                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
9145                 break;
9146         case 1:
9147                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
9148                 break;
9149         case 2:
9150                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
9151                 break;
9152         case 3:
9153                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
9154                 break;
9155         }
9156         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
9157          * 32 usec, so need to convert the value here. */
9158         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
9159         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
9160         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
9161         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
9162
9163         nla_nest_end(msg, params);
9164
9165         nla_nest_end(msg, txq);
9166
9167         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
9168                 return 0;
9169         msg = NULL;
9170  nla_put_failure:
9171         nlmsg_free(msg);
9172         return -1;
9173 }
9174
9175
9176 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
9177                              const char *ifname, int vlan_id)
9178 {
9179         struct wpa_driver_nl80211_data *drv = bss->drv;
9180         struct nl_msg *msg;
9181         int ret = -ENOBUFS;
9182
9183         msg = nlmsg_alloc();
9184         if (!msg)
9185                 return -ENOMEM;
9186
9187         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
9188                    ", ifname=%s[%d], vlan_id=%d)",
9189                    bss->ifname, if_nametoindex(bss->ifname),
9190                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
9191         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
9192
9193         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
9194                     if_nametoindex(bss->ifname));
9195         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
9196         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
9197                     if_nametoindex(ifname));
9198
9199         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9200         msg = NULL;
9201         if (ret < 0) {
9202                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
9203                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
9204                            MAC2STR(addr), ifname, vlan_id, ret,
9205                            strerror(-ret));
9206         }
9207  nla_put_failure:
9208         nlmsg_free(msg);
9209         return ret;
9210 }
9211
9212
9213 static int i802_get_inact_sec(void *priv, const u8 *addr)
9214 {
9215         struct hostap_sta_driver_data data;
9216         int ret;
9217
9218         data.inactive_msec = (unsigned long) -1;
9219         ret = i802_read_sta_data(priv, &data, addr);
9220         if (ret || data.inactive_msec == (unsigned long) -1)
9221                 return -1;
9222         return data.inactive_msec / 1000;
9223 }
9224
9225
9226 static int i802_sta_clear_stats(void *priv, const u8 *addr)
9227 {
9228 #if 0
9229         /* TODO */
9230 #endif
9231         return 0;
9232 }
9233
9234
9235 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
9236                            int reason)
9237 {
9238         struct i802_bss *bss = priv;
9239         struct wpa_driver_nl80211_data *drv = bss->drv;
9240         struct ieee80211_mgmt mgmt;
9241
9242         if (drv->device_ap_sme)
9243                 return wpa_driver_nl80211_sta_remove(bss, addr);
9244
9245         memset(&mgmt, 0, sizeof(mgmt));
9246         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
9247                                           WLAN_FC_STYPE_DEAUTH);
9248         memcpy(mgmt.da, addr, ETH_ALEN);
9249         memcpy(mgmt.sa, own_addr, ETH_ALEN);
9250         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
9251         mgmt.u.deauth.reason_code = host_to_le16(reason);
9252         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9253                                             IEEE80211_HDRLEN +
9254                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
9255                                             0);
9256 }
9257
9258
9259 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
9260                              int reason)
9261 {
9262         struct i802_bss *bss = priv;
9263         struct wpa_driver_nl80211_data *drv = bss->drv;
9264         struct ieee80211_mgmt mgmt;
9265
9266         if (drv->device_ap_sme)
9267                 return wpa_driver_nl80211_sta_remove(bss, addr);
9268
9269         memset(&mgmt, 0, sizeof(mgmt));
9270         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
9271                                           WLAN_FC_STYPE_DISASSOC);
9272         memcpy(mgmt.da, addr, ETH_ALEN);
9273         memcpy(mgmt.sa, own_addr, ETH_ALEN);
9274         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
9275         mgmt.u.disassoc.reason_code = host_to_le16(reason);
9276         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9277                                             IEEE80211_HDRLEN +
9278                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
9279                                             0);
9280 }
9281
9282
9283 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
9284 {
9285         int i;
9286         int *old;
9287
9288         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
9289                    ifidx);
9290         for (i = 0; i < drv->num_if_indices; i++) {
9291                 if (drv->if_indices[i] == 0) {
9292                         drv->if_indices[i] = ifidx;
9293                         return;
9294                 }
9295         }
9296
9297         if (drv->if_indices != drv->default_if_indices)
9298                 old = drv->if_indices;
9299         else
9300                 old = NULL;
9301
9302         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
9303                                            sizeof(int));
9304         if (!drv->if_indices) {
9305                 if (!old)
9306                         drv->if_indices = drv->default_if_indices;
9307                 else
9308                         drv->if_indices = old;
9309                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
9310                            "interfaces");
9311                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
9312                 return;
9313         } else if (!old)
9314                 os_memcpy(drv->if_indices, drv->default_if_indices,
9315                           sizeof(drv->default_if_indices));
9316         drv->if_indices[drv->num_if_indices] = ifidx;
9317         drv->num_if_indices++;
9318 }
9319
9320
9321 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
9322 {
9323         int i;
9324
9325         for (i = 0; i < drv->num_if_indices; i++) {
9326                 if (drv->if_indices[i] == ifidx) {
9327                         drv->if_indices[i] = 0;
9328                         break;
9329                 }
9330         }
9331 }
9332
9333
9334 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
9335 {
9336         int i;
9337
9338         for (i = 0; i < drv->num_if_indices; i++)
9339                 if (drv->if_indices[i] == ifidx)
9340                         return 1;
9341
9342         return 0;
9343 }
9344
9345
9346 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
9347                             const char *bridge_ifname, char *ifname_wds)
9348 {
9349         struct i802_bss *bss = priv;
9350         struct wpa_driver_nl80211_data *drv = bss->drv;
9351         char name[IFNAMSIZ + 1];
9352
9353         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
9354         if (ifname_wds)
9355                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
9356
9357         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
9358                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
9359         if (val) {
9360                 if (!if_nametoindex(name)) {
9361                         if (nl80211_create_iface(drv, name,
9362                                                  NL80211_IFTYPE_AP_VLAN,
9363                                                  bss->addr, 1, NULL, NULL, 0) <
9364                             0)
9365                                 return -1;
9366                         if (bridge_ifname &&
9367                             linux_br_add_if(drv->global->ioctl_sock,
9368                                             bridge_ifname, name) < 0)
9369                                 return -1;
9370                 }
9371                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
9372                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
9373                                    "interface %s up", name);
9374                 }
9375                 return i802_set_sta_vlan(priv, addr, name, 0);
9376         } else {
9377                 if (bridge_ifname)
9378                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
9379                                         name);
9380
9381                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
9382                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
9383                                                     name);
9384         }
9385 }
9386
9387
9388 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
9389 {
9390         struct wpa_driver_nl80211_data *drv = eloop_ctx;
9391         struct sockaddr_ll lladdr;
9392         unsigned char buf[3000];
9393         int len;
9394         socklen_t fromlen = sizeof(lladdr);
9395
9396         len = recvfrom(sock, buf, sizeof(buf), 0,
9397                        (struct sockaddr *)&lladdr, &fromlen);
9398         if (len < 0) {
9399                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
9400                            strerror(errno));
9401                 return;
9402         }
9403
9404         if (have_ifidx(drv, lladdr.sll_ifindex))
9405                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
9406 }
9407
9408
9409 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
9410                              struct i802_bss *bss,
9411                              const char *brname, const char *ifname)
9412 {
9413         int ifindex;
9414         char in_br[IFNAMSIZ];
9415
9416         os_strlcpy(bss->brname, brname, IFNAMSIZ);
9417         ifindex = if_nametoindex(brname);
9418         if (ifindex == 0) {
9419                 /*
9420                  * Bridge was configured, but the bridge device does
9421                  * not exist. Try to add it now.
9422                  */
9423                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
9424                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
9425                                    "bridge interface %s: %s",
9426                                    brname, strerror(errno));
9427                         return -1;
9428                 }
9429                 bss->added_bridge = 1;
9430                 add_ifidx(drv, if_nametoindex(brname));
9431         }
9432
9433         if (linux_br_get(in_br, ifname) == 0) {
9434                 if (os_strcmp(in_br, brname) == 0)
9435                         return 0; /* already in the bridge */
9436
9437                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
9438                            "bridge %s", ifname, in_br);
9439                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
9440                     0) {
9441                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
9442                                    "remove interface %s from bridge "
9443                                    "%s: %s",
9444                                    ifname, brname, strerror(errno));
9445                         return -1;
9446                 }
9447         }
9448
9449         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
9450                    ifname, brname);
9451         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
9452                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
9453                            "into bridge %s: %s",
9454                            ifname, brname, strerror(errno));
9455                 return -1;
9456         }
9457         bss->added_if_into_bridge = 1;
9458
9459         return 0;
9460 }
9461
9462
9463 static void *i802_init(struct hostapd_data *hapd,
9464                        struct wpa_init_params *params)
9465 {
9466         struct wpa_driver_nl80211_data *drv;
9467         struct i802_bss *bss;
9468         size_t i;
9469         char brname[IFNAMSIZ];
9470         int ifindex, br_ifindex;
9471         int br_added = 0;
9472
9473         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
9474                                           params->global_priv, 1,
9475                                           params->bssid);
9476         if (bss == NULL)
9477                 return NULL;
9478
9479         drv = bss->drv;
9480
9481         if (linux_br_get(brname, params->ifname) == 0) {
9482                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
9483                            params->ifname, brname);
9484                 br_ifindex = if_nametoindex(brname);
9485         } else {
9486                 brname[0] = '\0';
9487                 br_ifindex = 0;
9488         }
9489
9490         for (i = 0; i < params->num_bridge; i++) {
9491                 if (params->bridge[i]) {
9492                         ifindex = if_nametoindex(params->bridge[i]);
9493                         if (ifindex)
9494                                 add_ifidx(drv, ifindex);
9495                         if (ifindex == br_ifindex)
9496                                 br_added = 1;
9497                 }
9498         }
9499         if (!br_added && br_ifindex &&
9500             (params->num_bridge == 0 || !params->bridge[0]))
9501                 add_ifidx(drv, br_ifindex);
9502
9503         /* start listening for EAPOL on the default AP interface */
9504         add_ifidx(drv, drv->ifindex);
9505
9506         if (params->num_bridge && params->bridge[0] &&
9507             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
9508                 goto failed;
9509
9510         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
9511         if (drv->eapol_sock < 0) {
9512                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
9513                            strerror(errno));
9514                 goto failed;
9515         }
9516
9517         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
9518         {
9519                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
9520                 goto failed;
9521         }
9522
9523         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
9524                                params->own_addr))
9525                 goto failed;
9526
9527         memcpy(bss->addr, params->own_addr, ETH_ALEN);
9528
9529         return bss;
9530
9531 failed:
9532         wpa_driver_nl80211_deinit(bss);
9533         return NULL;
9534 }
9535
9536
9537 static void i802_deinit(void *priv)
9538 {
9539         struct i802_bss *bss = priv;
9540         wpa_driver_nl80211_deinit(bss);
9541 }
9542
9543
9544 static enum nl80211_iftype wpa_driver_nl80211_if_type(
9545         enum wpa_driver_if_type type)
9546 {
9547         switch (type) {
9548         case WPA_IF_STATION:
9549                 return NL80211_IFTYPE_STATION;
9550         case WPA_IF_P2P_CLIENT:
9551         case WPA_IF_P2P_GROUP:
9552                 return NL80211_IFTYPE_P2P_CLIENT;
9553         case WPA_IF_AP_VLAN:
9554                 return NL80211_IFTYPE_AP_VLAN;
9555         case WPA_IF_AP_BSS:
9556                 return NL80211_IFTYPE_AP;
9557         case WPA_IF_P2P_GO:
9558                 return NL80211_IFTYPE_P2P_GO;
9559         case WPA_IF_P2P_DEVICE:
9560                 return NL80211_IFTYPE_P2P_DEVICE;
9561         }
9562         return -1;
9563 }
9564
9565
9566 #ifdef CONFIG_P2P
9567
9568 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
9569 {
9570         struct wpa_driver_nl80211_data *drv;
9571         dl_list_for_each(drv, &global->interfaces,
9572                          struct wpa_driver_nl80211_data, list) {
9573                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
9574                         return 1;
9575         }
9576         return 0;
9577 }
9578
9579
9580 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
9581                                       u8 *new_addr)
9582 {
9583         unsigned int idx;
9584
9585         if (!drv->global)
9586                 return -1;
9587
9588         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
9589         for (idx = 0; idx < 64; idx++) {
9590                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
9591                 new_addr[0] ^= idx << 2;
9592                 if (!nl80211_addr_in_use(drv->global, new_addr))
9593                         break;
9594         }
9595         if (idx == 64)
9596                 return -1;
9597
9598         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
9599                    MACSTR, MAC2STR(new_addr));
9600
9601         return 0;
9602 }
9603
9604 #endif /* CONFIG_P2P */
9605
9606
9607 struct wdev_info {
9608         u64 wdev_id;
9609         int wdev_id_set;
9610         u8 macaddr[ETH_ALEN];
9611 };
9612
9613 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
9614 {
9615         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
9616         struct nlattr *tb[NL80211_ATTR_MAX + 1];
9617         struct wdev_info *wi = arg;
9618
9619         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
9620                   genlmsg_attrlen(gnlh, 0), NULL);
9621         if (tb[NL80211_ATTR_WDEV]) {
9622                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
9623                 wi->wdev_id_set = 1;
9624         }
9625
9626         if (tb[NL80211_ATTR_MAC])
9627                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
9628                           ETH_ALEN);
9629
9630         return NL_SKIP;
9631 }
9632
9633
9634 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
9635                                      const char *ifname, const u8 *addr,
9636                                      void *bss_ctx, void **drv_priv,
9637                                      char *force_ifname, u8 *if_addr,
9638                                      const char *bridge, int use_existing)
9639 {
9640         enum nl80211_iftype nlmode;
9641         struct i802_bss *bss = priv;
9642         struct wpa_driver_nl80211_data *drv = bss->drv;
9643         int ifidx;
9644         int added = 1;
9645
9646         if (addr)
9647                 os_memcpy(if_addr, addr, ETH_ALEN);
9648         nlmode = wpa_driver_nl80211_if_type(type);
9649         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
9650                 struct wdev_info p2pdev_info;
9651
9652                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
9653                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
9654                                              0, nl80211_wdev_handler,
9655                                              &p2pdev_info, use_existing);
9656                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
9657                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
9658                                    ifname);
9659                         return -1;
9660                 }
9661
9662                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
9663                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
9664                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
9665                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
9666                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
9667                            ifname,
9668                            (long long unsigned int) p2pdev_info.wdev_id);
9669         } else {
9670                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
9671                                              0, NULL, NULL, use_existing);
9672                 if (use_existing && ifidx == -ENFILE) {
9673                         added = 0;
9674                         ifidx = if_nametoindex(ifname);
9675                 } else if (ifidx < 0) {
9676                         return -1;
9677                 }
9678         }
9679
9680         if (!addr) {
9681                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
9682                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
9683                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
9684                                             bss->ifname, if_addr) < 0) {
9685                         if (added)
9686                                 nl80211_remove_iface(drv, ifidx);
9687                         return -1;
9688                 }
9689         }
9690
9691 #ifdef CONFIG_P2P
9692         if (!addr &&
9693             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
9694              type == WPA_IF_P2P_GO)) {
9695                 /* Enforce unique P2P Interface Address */
9696                 u8 new_addr[ETH_ALEN];
9697
9698                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
9699                                        new_addr) < 0) {
9700                         nl80211_remove_iface(drv, ifidx);
9701                         return -1;
9702                 }
9703                 if (nl80211_addr_in_use(drv->global, new_addr)) {
9704                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
9705                                    "for P2P group interface");
9706                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
9707                                 nl80211_remove_iface(drv, ifidx);
9708                                 return -1;
9709                         }
9710                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
9711                                                new_addr) < 0) {
9712                                 nl80211_remove_iface(drv, ifidx);
9713                                 return -1;
9714                         }
9715                 }
9716                 os_memcpy(if_addr, new_addr, ETH_ALEN);
9717         }
9718 #endif /* CONFIG_P2P */
9719
9720         if (type == WPA_IF_AP_BSS) {
9721                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
9722                 if (new_bss == NULL) {
9723                         if (added)
9724                                 nl80211_remove_iface(drv, ifidx);
9725                         return -1;
9726                 }
9727
9728                 if (bridge &&
9729                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
9730                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
9731                                    "interface %s to a bridge %s",
9732                                    ifname, bridge);
9733                         if (added)
9734                                 nl80211_remove_iface(drv, ifidx);
9735                         os_free(new_bss);
9736                         return -1;
9737                 }
9738
9739                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
9740                 {
9741                         nl80211_remove_iface(drv, ifidx);
9742                         os_free(new_bss);
9743                         return -1;
9744                 }
9745                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
9746                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
9747                 new_bss->ifindex = ifidx;
9748                 new_bss->drv = drv;
9749                 new_bss->next = drv->first_bss->next;
9750                 new_bss->freq = drv->first_bss->freq;
9751                 new_bss->ctx = bss_ctx;
9752                 new_bss->added_if = added;
9753                 drv->first_bss->next = new_bss;
9754                 if (drv_priv)
9755                         *drv_priv = new_bss;
9756                 nl80211_init_bss(new_bss);
9757
9758                 /* Subscribe management frames for this WPA_IF_AP_BSS */
9759                 if (nl80211_setup_ap(new_bss))
9760                         return -1;
9761         }
9762
9763         if (drv->global)
9764                 drv->global->if_add_ifindex = ifidx;
9765
9766         return 0;
9767 }
9768
9769
9770 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
9771                                         enum wpa_driver_if_type type,
9772                                         const char *ifname)
9773 {
9774         struct wpa_driver_nl80211_data *drv = bss->drv;
9775         int ifindex = if_nametoindex(ifname);
9776
9777         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
9778                    __func__, type, ifname, ifindex, bss->added_if);
9779         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
9780                 nl80211_remove_iface(drv, ifindex);
9781
9782         if (type != WPA_IF_AP_BSS)
9783                 return 0;
9784
9785         if (bss->added_if_into_bridge) {
9786                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
9787                                     bss->ifname) < 0)
9788                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
9789                                    "interface %s from bridge %s: %s",
9790                                    bss->ifname, bss->brname, strerror(errno));
9791         }
9792         if (bss->added_bridge) {
9793                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
9794                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
9795                                    "bridge %s: %s",
9796                                    bss->brname, strerror(errno));
9797         }
9798
9799         if (bss != drv->first_bss) {
9800                 struct i802_bss *tbss;
9801
9802                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
9803                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
9804                         if (tbss->next == bss) {
9805                                 tbss->next = bss->next;
9806                                 /* Unsubscribe management frames */
9807                                 nl80211_teardown_ap(bss);
9808                                 nl80211_destroy_bss(bss);
9809                                 os_free(bss);
9810                                 bss = NULL;
9811                                 break;
9812                         }
9813                 }
9814                 if (bss)
9815                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
9816                                    "BSS %p in the list", __func__, bss);
9817         } else {
9818                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
9819                 nl80211_teardown_ap(bss);
9820                 if (!bss->added_if && !drv->first_bss->next)
9821                         wpa_driver_nl80211_del_beacon(drv);
9822                 nl80211_destroy_bss(bss);
9823                 if (!bss->added_if)
9824                         i802_set_iface_flags(bss, 0);
9825                 if (drv->first_bss->next) {
9826                         drv->first_bss = drv->first_bss->next;
9827                         drv->ctx = drv->first_bss->ctx;
9828                         os_free(bss);
9829                 } else {
9830                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
9831                 }
9832         }
9833
9834         return 0;
9835 }
9836
9837
9838 static int cookie_handler(struct nl_msg *msg, void *arg)
9839 {
9840         struct nlattr *tb[NL80211_ATTR_MAX + 1];
9841         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
9842         u64 *cookie = arg;
9843         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
9844                   genlmsg_attrlen(gnlh, 0), NULL);
9845         if (tb[NL80211_ATTR_COOKIE])
9846                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
9847         return NL_SKIP;
9848 }
9849
9850
9851 static int nl80211_send_frame_cmd(struct i802_bss *bss,
9852                                   unsigned int freq, unsigned int wait,
9853                                   const u8 *buf, size_t buf_len,
9854                                   u64 *cookie_out, int no_cck, int no_ack,
9855                                   int offchanok)
9856 {
9857         struct wpa_driver_nl80211_data *drv = bss->drv;
9858         struct nl_msg *msg;
9859         u64 cookie;
9860         int ret = -1;
9861
9862         msg = nlmsg_alloc();
9863         if (!msg)
9864                 return -1;
9865
9866         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
9867                    "no_ack=%d offchanok=%d",
9868                    freq, wait, no_cck, no_ack, offchanok);
9869         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
9870         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
9871
9872         if (nl80211_set_iface_id(msg, bss) < 0)
9873                 goto nla_put_failure;
9874         if (freq)
9875                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
9876         if (wait)
9877                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
9878         if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX))
9879                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
9880         if (no_cck)
9881                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
9882         if (no_ack)
9883                 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
9884
9885         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
9886
9887         cookie = 0;
9888         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
9889         msg = NULL;
9890         if (ret) {
9891                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
9892                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
9893                            freq, wait);
9894                 goto nla_put_failure;
9895         }
9896         wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
9897                    "cookie 0x%llx", no_ack ? " (no ACK)" : "",
9898                    (long long unsigned int) cookie);
9899
9900         if (cookie_out)
9901                 *cookie_out = no_ack ? (u64) -1 : cookie;
9902
9903 nla_put_failure:
9904         nlmsg_free(msg);
9905         return ret;
9906 }
9907
9908
9909 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
9910                                           unsigned int freq,
9911                                           unsigned int wait_time,
9912                                           const u8 *dst, const u8 *src,
9913                                           const u8 *bssid,
9914                                           const u8 *data, size_t data_len,
9915                                           int no_cck)
9916 {
9917         struct wpa_driver_nl80211_data *drv = bss->drv;
9918         int ret = -1;
9919         u8 *buf;
9920         struct ieee80211_hdr *hdr;
9921
9922         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
9923                    "freq=%u MHz wait=%d ms no_cck=%d)",
9924                    drv->ifindex, freq, wait_time, no_cck);
9925
9926         buf = os_zalloc(24 + data_len);
9927         if (buf == NULL)
9928                 return ret;
9929         os_memcpy(buf + 24, data, data_len);
9930         hdr = (struct ieee80211_hdr *) buf;
9931         hdr->frame_control =
9932                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
9933         os_memcpy(hdr->addr1, dst, ETH_ALEN);
9934         os_memcpy(hdr->addr2, src, ETH_ALEN);
9935         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
9936
9937         if (is_ap_interface(drv->nlmode) &&
9938             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
9939              (int) freq == bss->freq || drv->device_ap_sme ||
9940              !drv->use_monitor))
9941                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
9942                                                    0, freq, no_cck, 1,
9943                                                    wait_time);
9944         else
9945                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
9946                                              24 + data_len,
9947                                              &drv->send_action_cookie,
9948                                              no_cck, 0, 1);
9949
9950         os_free(buf);
9951         return ret;
9952 }
9953
9954
9955 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
9956 {
9957         struct i802_bss *bss = priv;
9958         struct wpa_driver_nl80211_data *drv = bss->drv;
9959         struct nl_msg *msg;
9960         int ret;
9961
9962         msg = nlmsg_alloc();
9963         if (!msg)
9964                 return;
9965
9966         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
9967                    (long long unsigned int) drv->send_action_cookie);
9968         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
9969
9970         if (nl80211_set_iface_id(msg, bss) < 0)
9971                 goto nla_put_failure;
9972         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
9973
9974         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9975         msg = NULL;
9976         if (ret)
9977                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
9978                            "(%s)", ret, strerror(-ret));
9979
9980  nla_put_failure:
9981         nlmsg_free(msg);
9982 }
9983
9984
9985 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
9986                                                 unsigned int duration)
9987 {
9988         struct i802_bss *bss = priv;
9989         struct wpa_driver_nl80211_data *drv = bss->drv;
9990         struct nl_msg *msg;
9991         int ret;
9992         u64 cookie;
9993
9994         msg = nlmsg_alloc();
9995         if (!msg)
9996                 return -1;
9997
9998         nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
9999
10000         if (nl80211_set_iface_id(msg, bss) < 0)
10001                 goto nla_put_failure;
10002
10003         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
10004         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
10005
10006         cookie = 0;
10007         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
10008         msg = NULL;
10009         if (ret == 0) {
10010                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
10011                            "0x%llx for freq=%u MHz duration=%u",
10012                            (long long unsigned int) cookie, freq, duration);
10013                 drv->remain_on_chan_cookie = cookie;
10014                 drv->pending_remain_on_chan = 1;
10015                 return 0;
10016         }
10017         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
10018                    "(freq=%d duration=%u): %d (%s)",
10019                    freq, duration, ret, strerror(-ret));
10020 nla_put_failure:
10021         nlmsg_free(msg);
10022         return -1;
10023 }
10024
10025
10026 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
10027 {
10028         struct i802_bss *bss = priv;
10029         struct wpa_driver_nl80211_data *drv = bss->drv;
10030         struct nl_msg *msg;
10031         int ret;
10032
10033         if (!drv->pending_remain_on_chan) {
10034                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
10035                            "to cancel");
10036                 return -1;
10037         }
10038
10039         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
10040                    "0x%llx",
10041                    (long long unsigned int) drv->remain_on_chan_cookie);
10042
10043         msg = nlmsg_alloc();
10044         if (!msg)
10045                 return -1;
10046
10047         nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
10048
10049         if (nl80211_set_iface_id(msg, bss) < 0)
10050                 goto nla_put_failure;
10051
10052         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
10053
10054         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
10055         msg = NULL;
10056         if (ret == 0)
10057                 return 0;
10058         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
10059                    "%d (%s)", ret, strerror(-ret));
10060 nla_put_failure:
10061         nlmsg_free(msg);
10062         return -1;
10063 }
10064
10065
10066 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
10067 {
10068         struct wpa_driver_nl80211_data *drv = bss->drv;
10069
10070         if (!report) {
10071                 if (bss->nl_preq && drv->device_ap_sme &&
10072                     is_ap_interface(drv->nlmode)) {
10073                         /*
10074                          * Do not disable Probe Request reporting that was
10075                          * enabled in nl80211_setup_ap().
10076                          */
10077                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
10078                                    "Probe Request reporting nl_preq=%p while "
10079                                    "in AP mode", bss->nl_preq);
10080                 } else if (bss->nl_preq) {
10081                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
10082                                    "reporting nl_preq=%p", bss->nl_preq);
10083                         nl80211_destroy_eloop_handle(&bss->nl_preq);
10084                 }
10085                 return 0;
10086         }
10087
10088         if (bss->nl_preq) {
10089                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
10090                            "already on! nl_preq=%p", bss->nl_preq);
10091                 return 0;
10092         }
10093
10094         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
10095         if (bss->nl_preq == NULL)
10096                 return -1;
10097         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
10098                    "reporting nl_preq=%p", bss->nl_preq);
10099
10100         if (nl80211_register_frame(bss, bss->nl_preq,
10101                                    (WLAN_FC_TYPE_MGMT << 2) |
10102                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
10103                                    NULL, 0) < 0)
10104                 goto out_err;
10105
10106         nl80211_register_eloop_read(&bss->nl_preq,
10107                                     wpa_driver_nl80211_event_receive,
10108                                     bss->nl_cb);
10109
10110         return 0;
10111
10112  out_err:
10113         nl_destroy_handles(&bss->nl_preq);
10114         return -1;
10115 }
10116
10117
10118 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
10119                                      int ifindex, int disabled)
10120 {
10121         struct nl_msg *msg;
10122         struct nlattr *bands, *band;
10123         int ret;
10124
10125         msg = nlmsg_alloc();
10126         if (!msg)
10127                 return -1;
10128
10129         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
10130         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
10131
10132         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
10133         if (!bands)
10134                 goto nla_put_failure;
10135
10136         /*
10137          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
10138          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
10139          * rates. All 5 GHz rates are left enabled.
10140          */
10141         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
10142         if (!band)
10143                 goto nla_put_failure;
10144         if (disabled) {
10145                 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
10146                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
10147         }
10148         nla_nest_end(msg, band);
10149
10150         nla_nest_end(msg, bands);
10151
10152         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
10153         msg = NULL;
10154         if (ret) {
10155                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
10156                            "(%s)", ret, strerror(-ret));
10157         } else
10158                 drv->disabled_11b_rates = disabled;
10159
10160         return ret;
10161
10162 nla_put_failure:
10163         nlmsg_free(msg);
10164         return -1;
10165 }
10166
10167
10168 static int wpa_driver_nl80211_deinit_ap(void *priv)
10169 {
10170         struct i802_bss *bss = priv;
10171         struct wpa_driver_nl80211_data *drv = bss->drv;
10172         if (!is_ap_interface(drv->nlmode))
10173                 return -1;
10174         wpa_driver_nl80211_del_beacon(drv);
10175
10176         /*
10177          * If the P2P GO interface was dynamically added, then it is
10178          * possible that the interface change to station is not possible.
10179          */
10180         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
10181                 return 0;
10182
10183         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
10184 }
10185
10186
10187 static int wpa_driver_nl80211_stop_ap(void *priv)
10188 {
10189         struct i802_bss *bss = priv;
10190         struct wpa_driver_nl80211_data *drv = bss->drv;
10191         if (!is_ap_interface(drv->nlmode))
10192                 return -1;
10193         wpa_driver_nl80211_del_beacon(drv);
10194         bss->beacon_set = 0;
10195         return 0;
10196 }
10197
10198
10199 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
10200 {
10201         struct i802_bss *bss = priv;
10202         struct wpa_driver_nl80211_data *drv = bss->drv;
10203         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
10204                 return -1;
10205
10206         /*
10207          * If the P2P Client interface was dynamically added, then it is
10208          * possible that the interface change to station is not possible.
10209          */
10210         if (bss->if_dynamic)
10211                 return 0;
10212
10213         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
10214 }
10215
10216
10217 static void wpa_driver_nl80211_resume(void *priv)
10218 {
10219         struct i802_bss *bss = priv;
10220
10221         if (i802_set_iface_flags(bss, 1))
10222                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
10223 }
10224
10225
10226 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
10227                                   const u8 *ies, size_t ies_len)
10228 {
10229         struct i802_bss *bss = priv;
10230         struct wpa_driver_nl80211_data *drv = bss->drv;
10231         int ret;
10232         u8 *data, *pos;
10233         size_t data_len;
10234         const u8 *own_addr = bss->addr;
10235
10236         if (action != 1) {
10237                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
10238                            "action %d", action);
10239                 return -1;
10240         }
10241
10242         /*
10243          * Action frame payload:
10244          * Category[1] = 6 (Fast BSS Transition)
10245          * Action[1] = 1 (Fast BSS Transition Request)
10246          * STA Address
10247          * Target AP Address
10248          * FT IEs
10249          */
10250
10251         data_len = 2 + 2 * ETH_ALEN + ies_len;
10252         data = os_malloc(data_len);
10253         if (data == NULL)
10254                 return -1;
10255         pos = data;
10256         *pos++ = 0x06; /* FT Action category */
10257         *pos++ = action;
10258         os_memcpy(pos, own_addr, ETH_ALEN);
10259         pos += ETH_ALEN;
10260         os_memcpy(pos, target_ap, ETH_ALEN);
10261         pos += ETH_ALEN;
10262         os_memcpy(pos, ies, ies_len);
10263
10264         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
10265                                              drv->bssid, own_addr, drv->bssid,
10266                                              data, data_len, 0);
10267         os_free(data);
10268
10269         return ret;
10270 }
10271
10272
10273 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
10274 {
10275         struct i802_bss *bss = priv;
10276         struct wpa_driver_nl80211_data *drv = bss->drv;
10277         struct nl_msg *msg;
10278         struct nlattr *cqm;
10279         int ret = -1;
10280
10281         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
10282                    "hysteresis=%d", threshold, hysteresis);
10283
10284         msg = nlmsg_alloc();
10285         if (!msg)
10286                 return -1;
10287
10288         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
10289
10290         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
10291
10292         cqm = nla_nest_start(msg, NL80211_ATTR_CQM);
10293         if (cqm == NULL)
10294                 goto nla_put_failure;
10295
10296         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
10297         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
10298         nla_nest_end(msg, cqm);
10299
10300         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
10301         msg = NULL;
10302
10303 nla_put_failure:
10304         nlmsg_free(msg);
10305         return ret;
10306 }
10307
10308
10309 static int get_channel_width(struct nl_msg *msg, void *arg)
10310 {
10311         struct nlattr *tb[NL80211_ATTR_MAX + 1];
10312         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
10313         struct wpa_signal_info *sig_change = arg;
10314
10315         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
10316                   genlmsg_attrlen(gnlh, 0), NULL);
10317
10318         sig_change->center_frq1 = -1;
10319         sig_change->center_frq2 = -1;
10320         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
10321
10322         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
10323                 sig_change->chanwidth = convert2width(
10324                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
10325                 if (tb[NL80211_ATTR_CENTER_FREQ1])
10326                         sig_change->center_frq1 =
10327                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
10328                 if (tb[NL80211_ATTR_CENTER_FREQ2])
10329                         sig_change->center_frq2 =
10330                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
10331         }
10332
10333         return NL_SKIP;
10334 }
10335
10336
10337 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
10338                                      struct wpa_signal_info *sig)
10339 {
10340         struct nl_msg *msg;
10341
10342         msg = nlmsg_alloc();
10343         if (!msg)
10344                 return -ENOMEM;
10345
10346         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_INTERFACE);
10347         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
10348
10349         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
10350
10351 nla_put_failure:
10352         nlmsg_free(msg);
10353         return -ENOBUFS;
10354 }
10355
10356
10357 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
10358 {
10359         struct i802_bss *bss = priv;
10360         struct wpa_driver_nl80211_data *drv = bss->drv;
10361         int res;
10362
10363         os_memset(si, 0, sizeof(*si));
10364         res = nl80211_get_link_signal(drv, si);
10365         if (res != 0)
10366                 return res;
10367
10368         res = nl80211_get_channel_width(drv, si);
10369         if (res != 0)
10370                 return res;
10371
10372         return nl80211_get_link_noise(drv, si);
10373 }
10374
10375
10376 static int wpa_driver_nl80211_shared_freq(void *priv)
10377 {
10378         struct i802_bss *bss = priv;
10379         struct wpa_driver_nl80211_data *drv = bss->drv;
10380         struct wpa_driver_nl80211_data *driver;
10381         int freq = 0;
10382
10383         /*
10384          * If the same PHY is in connected state with some other interface,
10385          * then retrieve the assoc freq.
10386          */
10387         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
10388                    drv->phyname);
10389
10390         dl_list_for_each(driver, &drv->global->interfaces,
10391                          struct wpa_driver_nl80211_data, list) {
10392                 if (drv == driver ||
10393                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
10394                     !driver->associated)
10395                         continue;
10396
10397                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
10398                            MACSTR,
10399                            driver->phyname, driver->first_bss->ifname,
10400                            MAC2STR(driver->first_bss->addr));
10401                 if (is_ap_interface(driver->nlmode))
10402                         freq = driver->first_bss->freq;
10403                 else
10404                         freq = nl80211_get_assoc_freq(driver);
10405                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
10406                            drv->phyname, freq);
10407         }
10408
10409         if (!freq)
10410                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
10411                            "PHY (%s) in associated state", drv->phyname);
10412
10413         return freq;
10414 }
10415
10416
10417 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
10418                               int encrypt)
10419 {
10420         struct i802_bss *bss = priv;
10421         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
10422                                              0, 0, 0, 0);
10423 }
10424
10425
10426 static int nl80211_set_param(void *priv, const char *param)
10427 {
10428         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
10429         if (param == NULL)
10430                 return 0;
10431
10432 #ifdef CONFIG_P2P
10433         if (os_strstr(param, "use_p2p_group_interface=1")) {
10434                 struct i802_bss *bss = priv;
10435                 struct wpa_driver_nl80211_data *drv = bss->drv;
10436
10437                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
10438                            "interface");
10439                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
10440                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
10441         }
10442
10443         if (os_strstr(param, "p2p_device=1")) {
10444                 struct i802_bss *bss = priv;
10445                 struct wpa_driver_nl80211_data *drv = bss->drv;
10446                 drv->allow_p2p_device = 1;
10447         }
10448 #endif /* CONFIG_P2P */
10449
10450         if (os_strstr(param, "use_monitor=1")) {
10451                 struct i802_bss *bss = priv;
10452                 struct wpa_driver_nl80211_data *drv = bss->drv;
10453                 drv->use_monitor = 1;
10454         }
10455
10456         if (os_strstr(param, "force_connect_cmd=1")) {
10457                 struct i802_bss *bss = priv;
10458                 struct wpa_driver_nl80211_data *drv = bss->drv;
10459                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
10460         }
10461
10462         return 0;
10463 }
10464
10465
10466 static void * nl80211_global_init(void)
10467 {
10468         struct nl80211_global *global;
10469         struct netlink_config *cfg;
10470
10471         global = os_zalloc(sizeof(*global));
10472         if (global == NULL)
10473                 return NULL;
10474         global->ioctl_sock = -1;
10475         dl_list_init(&global->interfaces);
10476         global->if_add_ifindex = -1;
10477
10478         cfg = os_zalloc(sizeof(*cfg));
10479         if (cfg == NULL)
10480                 goto err;
10481
10482         cfg->ctx = global;
10483         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
10484         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
10485         global->netlink = netlink_init(cfg);
10486         if (global->netlink == NULL) {
10487                 os_free(cfg);
10488                 goto err;
10489         }
10490
10491         if (wpa_driver_nl80211_init_nl_global(global) < 0)
10492                 goto err;
10493
10494         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
10495         if (global->ioctl_sock < 0) {
10496                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
10497                            strerror(errno));
10498                 goto err;
10499         }
10500
10501         return global;
10502
10503 err:
10504         nl80211_global_deinit(global);
10505         return NULL;
10506 }
10507
10508
10509 static void nl80211_global_deinit(void *priv)
10510 {
10511         struct nl80211_global *global = priv;
10512         if (global == NULL)
10513                 return;
10514         if (!dl_list_empty(&global->interfaces)) {
10515                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
10516                            "nl80211_global_deinit",
10517                            dl_list_len(&global->interfaces));
10518         }
10519
10520         if (global->netlink)
10521                 netlink_deinit(global->netlink);
10522
10523         nl_destroy_handles(&global->nl);
10524
10525         if (global->nl_event)
10526                 nl80211_destroy_eloop_handle(&global->nl_event);
10527
10528         nl_cb_put(global->nl_cb);
10529
10530         if (global->ioctl_sock >= 0)
10531                 close(global->ioctl_sock);
10532
10533         os_free(global);
10534 }
10535
10536
10537 static const char * nl80211_get_radio_name(void *priv)
10538 {
10539         struct i802_bss *bss = priv;
10540         struct wpa_driver_nl80211_data *drv = bss->drv;
10541         return drv->phyname;
10542 }
10543
10544
10545 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
10546                          const u8 *pmkid)
10547 {
10548         struct nl_msg *msg;
10549
10550         msg = nlmsg_alloc();
10551         if (!msg)
10552                 return -ENOMEM;
10553
10554         nl80211_cmd(bss->drv, msg, 0, cmd);
10555
10556         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
10557         if (pmkid)
10558                 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
10559         if (bssid)
10560                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
10561
10562         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
10563  nla_put_failure:
10564         nlmsg_free(msg);
10565         return -ENOBUFS;
10566 }
10567
10568
10569 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
10570 {
10571         struct i802_bss *bss = priv;
10572         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
10573         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
10574 }
10575
10576
10577 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
10578 {
10579         struct i802_bss *bss = priv;
10580         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
10581                    MAC2STR(bssid));
10582         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
10583 }
10584
10585
10586 static int nl80211_flush_pmkid(void *priv)
10587 {
10588         struct i802_bss *bss = priv;
10589         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
10590         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
10591 }
10592
10593
10594 static void clean_survey_results(struct survey_results *survey_results)
10595 {
10596         struct freq_survey *survey, *tmp;
10597
10598         if (dl_list_empty(&survey_results->survey_list))
10599                 return;
10600
10601         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
10602                               struct freq_survey, list) {
10603                 dl_list_del(&survey->list);
10604                 os_free(survey);
10605         }
10606 }
10607
10608
10609 static void add_survey(struct nlattr **sinfo, u32 ifidx,
10610                        struct dl_list *survey_list)
10611 {
10612         struct freq_survey *survey;
10613
10614         survey = os_zalloc(sizeof(struct freq_survey));
10615         if  (!survey)
10616                 return;
10617
10618         survey->ifidx = ifidx;
10619         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
10620         survey->filled = 0;
10621
10622         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
10623                 survey->nf = (int8_t)
10624                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
10625                 survey->filled |= SURVEY_HAS_NF;
10626         }
10627
10628         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
10629                 survey->channel_time =
10630                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
10631                 survey->filled |= SURVEY_HAS_CHAN_TIME;
10632         }
10633
10634         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
10635                 survey->channel_time_busy =
10636                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
10637                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
10638         }
10639
10640         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
10641                 survey->channel_time_rx =
10642                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
10643                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
10644         }
10645
10646         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
10647                 survey->channel_time_tx =
10648                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
10649                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
10650         }
10651
10652         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)",
10653                    survey->freq,
10654                    survey->nf,
10655                    (unsigned long int) survey->channel_time,
10656                    (unsigned long int) survey->channel_time_busy,
10657                    (unsigned long int) survey->channel_time_tx,
10658                    (unsigned long int) survey->channel_time_rx,
10659                    survey->filled);
10660
10661         dl_list_add_tail(survey_list, &survey->list);
10662 }
10663
10664
10665 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
10666                            unsigned int freq_filter)
10667 {
10668         if (!freq_filter)
10669                 return 1;
10670
10671         return freq_filter == surveyed_freq;
10672 }
10673
10674
10675 static int survey_handler(struct nl_msg *msg, void *arg)
10676 {
10677         struct nlattr *tb[NL80211_ATTR_MAX + 1];
10678         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
10679         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
10680         struct survey_results *survey_results;
10681         u32 surveyed_freq = 0;
10682         u32 ifidx;
10683
10684         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
10685                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
10686                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
10687         };
10688
10689         survey_results = (struct survey_results *) arg;
10690
10691         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
10692                   genlmsg_attrlen(gnlh, 0), NULL);
10693
10694         if (!tb[NL80211_ATTR_IFINDEX])
10695                 return NL_SKIP;
10696
10697         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
10698
10699         if (!tb[NL80211_ATTR_SURVEY_INFO])
10700                 return NL_SKIP;
10701
10702         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
10703                              tb[NL80211_ATTR_SURVEY_INFO],
10704                              survey_policy))
10705                 return NL_SKIP;
10706
10707         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
10708                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
10709                 return NL_SKIP;
10710         }
10711
10712         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
10713
10714         if (!check_survey_ok(sinfo, surveyed_freq,
10715                              survey_results->freq_filter))
10716                 return NL_SKIP;
10717
10718         if (survey_results->freq_filter &&
10719             survey_results->freq_filter != surveyed_freq) {
10720                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
10721                            surveyed_freq);
10722                 return NL_SKIP;
10723         }
10724
10725         add_survey(sinfo, ifidx, &survey_results->survey_list);
10726
10727         return NL_SKIP;
10728 }
10729
10730
10731 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
10732 {
10733         struct i802_bss *bss = priv;
10734         struct wpa_driver_nl80211_data *drv = bss->drv;
10735         struct nl_msg *msg;
10736         int err = -ENOBUFS;
10737         union wpa_event_data data;
10738         struct survey_results *survey_results;
10739
10740         os_memset(&data, 0, sizeof(data));
10741         survey_results = &data.survey_results;
10742
10743         dl_list_init(&survey_results->survey_list);
10744
10745         msg = nlmsg_alloc();
10746         if (!msg)
10747                 goto nla_put_failure;
10748
10749         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
10750
10751         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
10752
10753         if (freq)
10754                 data.survey_results.freq_filter = freq;
10755
10756         do {
10757                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
10758                 err = send_and_recv_msgs(drv, msg, survey_handler,
10759                                          survey_results);
10760         } while (err > 0);
10761
10762         if (err) {
10763                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
10764                 goto out_clean;
10765         }
10766
10767         wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
10768
10769 out_clean:
10770         clean_survey_results(survey_results);
10771 nla_put_failure:
10772         return err;
10773 }
10774
10775
10776 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
10777                                    const u8 *replay_ctr)
10778 {
10779         struct i802_bss *bss = priv;
10780         struct wpa_driver_nl80211_data *drv = bss->drv;
10781         struct nlattr *replay_nested;
10782         struct nl_msg *msg;
10783
10784         msg = nlmsg_alloc();
10785         if (!msg)
10786                 return;
10787
10788         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10789
10790         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
10791
10792         replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10793         if (!replay_nested)
10794                 goto nla_put_failure;
10795
10796         NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
10797         NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
10798         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
10799                 replay_ctr);
10800
10801         nla_nest_end(msg, replay_nested);
10802
10803         send_and_recv_msgs(drv, msg, NULL, NULL);
10804         return;
10805  nla_put_failure:
10806         nlmsg_free(msg);
10807 }
10808
10809
10810 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
10811                                     const u8 *addr, int qos)
10812 {
10813         /* send data frame to poll STA and check whether
10814          * this frame is ACKed */
10815         struct {
10816                 struct ieee80211_hdr hdr;
10817                 u16 qos_ctl;
10818         } STRUCT_PACKED nulldata;
10819         size_t size;
10820
10821         /* Send data frame to poll STA and check whether this frame is ACKed */
10822
10823         os_memset(&nulldata, 0, sizeof(nulldata));
10824
10825         if (qos) {
10826                 nulldata.hdr.frame_control =
10827                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
10828                                      WLAN_FC_STYPE_QOS_NULL);
10829                 size = sizeof(nulldata);
10830         } else {
10831                 nulldata.hdr.frame_control =
10832                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
10833                                      WLAN_FC_STYPE_NULLFUNC);
10834                 size = sizeof(struct ieee80211_hdr);
10835         }
10836
10837         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
10838         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
10839         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
10840         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
10841
10842         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
10843                                          0, 0) < 0)
10844                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
10845                            "send poll frame");
10846 }
10847
10848 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
10849                                 int qos)
10850 {
10851         struct i802_bss *bss = priv;
10852         struct wpa_driver_nl80211_data *drv = bss->drv;
10853         struct nl_msg *msg;
10854
10855         if (!drv->poll_command_supported) {
10856                 nl80211_send_null_frame(bss, own_addr, addr, qos);
10857                 return;
10858         }
10859
10860         msg = nlmsg_alloc();
10861         if (!msg)
10862                 return;
10863
10864         nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
10865
10866         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
10867         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
10868
10869         send_and_recv_msgs(drv, msg, NULL, NULL);
10870         return;
10871  nla_put_failure:
10872         nlmsg_free(msg);
10873 }
10874
10875
10876 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
10877 {
10878         struct nl_msg *msg;
10879
10880         msg = nlmsg_alloc();
10881         if (!msg)
10882                 return -ENOMEM;
10883
10884         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
10885         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
10886         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
10887                     enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
10888         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
10889 nla_put_failure:
10890         nlmsg_free(msg);
10891         return -ENOBUFS;
10892 }
10893
10894
10895 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
10896                                      int ctwindow)
10897 {
10898         struct i802_bss *bss = priv;
10899
10900         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
10901                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
10902
10903         if (opp_ps != -1 || ctwindow != -1) {
10904 #ifdef ANDROID_P2P
10905                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
10906 #else /* ANDROID_P2P */
10907                 return -1; /* Not yet supported */
10908 #endif /* ANDROID_P2P */
10909         }
10910
10911         if (legacy_ps == -1)
10912                 return 0;
10913         if (legacy_ps != 0 && legacy_ps != 1)
10914                 return -1; /* Not yet supported */
10915
10916         return nl80211_set_power_save(bss, legacy_ps);
10917 }
10918
10919
10920 static int nl80211_start_radar_detection(void *priv,
10921                                          struct hostapd_freq_params *freq)
10922 {
10923         struct i802_bss *bss = priv;
10924         struct wpa_driver_nl80211_data *drv = bss->drv;
10925         struct nl_msg *msg;
10926         int ret;
10927
10928         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)",
10929                    freq->freq, freq->ht_enabled, freq->vht_enabled,
10930                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
10931
10932         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
10933                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
10934                            "detection");
10935                 return -1;
10936         }
10937
10938         msg = nlmsg_alloc();
10939         if (!msg)
10940                 return -1;
10941
10942         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_RADAR_DETECT);
10943         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
10944         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
10945
10946         if (freq->vht_enabled) {
10947                 switch (freq->bandwidth) {
10948                 case 20:
10949                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10950                                     NL80211_CHAN_WIDTH_20);
10951                         break;
10952                 case 40:
10953                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10954                                     NL80211_CHAN_WIDTH_40);
10955                         break;
10956                 case 80:
10957                         if (freq->center_freq2)
10958                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10959                                             NL80211_CHAN_WIDTH_80P80);
10960                         else
10961                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10962                                             NL80211_CHAN_WIDTH_80);
10963                         break;
10964                 case 160:
10965                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10966                                     NL80211_CHAN_WIDTH_160);
10967                         break;
10968                 default:
10969                         return -1;
10970                 }
10971                 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1);
10972                 if (freq->center_freq2)
10973                         NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2,
10974                                     freq->center_freq2);
10975         } else if (freq->ht_enabled) {
10976                 switch (freq->sec_channel_offset) {
10977                 case -1:
10978                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10979                                     NL80211_CHAN_HT40MINUS);
10980                         break;
10981                 case 1:
10982                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10983                                     NL80211_CHAN_HT40PLUS);
10984                         break;
10985                 default:
10986                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10987                                     NL80211_CHAN_HT20);
10988                         break;
10989                 }
10990         }
10991
10992         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
10993         if (ret == 0)
10994                 return 0;
10995         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
10996                    "%d (%s)", ret, strerror(-ret));
10997 nla_put_failure:
10998         return -1;
10999 }
11000
11001 #ifdef CONFIG_TDLS
11002
11003 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
11004                                   u8 dialog_token, u16 status_code,
11005                                   const u8 *buf, size_t len)
11006 {
11007         struct i802_bss *bss = priv;
11008         struct wpa_driver_nl80211_data *drv = bss->drv;
11009         struct nl_msg *msg;
11010
11011         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
11012                 return -EOPNOTSUPP;
11013
11014         if (!dst)
11015                 return -EINVAL;
11016
11017         msg = nlmsg_alloc();
11018         if (!msg)
11019                 return -ENOMEM;
11020
11021         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
11022         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11023         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
11024         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
11025         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
11026         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
11027         NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
11028
11029         return send_and_recv_msgs(drv, msg, NULL, NULL);
11030
11031 nla_put_failure:
11032         nlmsg_free(msg);
11033         return -ENOBUFS;
11034 }
11035
11036
11037 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
11038 {
11039         struct i802_bss *bss = priv;
11040         struct wpa_driver_nl80211_data *drv = bss->drv;
11041         struct nl_msg *msg;
11042         enum nl80211_tdls_operation nl80211_oper;
11043
11044         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
11045                 return -EOPNOTSUPP;
11046
11047         switch (oper) {
11048         case TDLS_DISCOVERY_REQ:
11049                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
11050                 break;
11051         case TDLS_SETUP:
11052                 nl80211_oper = NL80211_TDLS_SETUP;
11053                 break;
11054         case TDLS_TEARDOWN:
11055                 nl80211_oper = NL80211_TDLS_TEARDOWN;
11056                 break;
11057         case TDLS_ENABLE_LINK:
11058                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
11059                 break;
11060         case TDLS_DISABLE_LINK:
11061                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
11062                 break;
11063         case TDLS_ENABLE:
11064                 return 0;
11065         case TDLS_DISABLE:
11066                 return 0;
11067         default:
11068                 return -EINVAL;
11069         }
11070
11071         msg = nlmsg_alloc();
11072         if (!msg)
11073                 return -ENOMEM;
11074
11075         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
11076         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
11077         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11078         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
11079
11080         return send_and_recv_msgs(drv, msg, NULL, NULL);
11081
11082 nla_put_failure:
11083         nlmsg_free(msg);
11084         return -ENOBUFS;
11085 }
11086
11087 #endif /* CONFIG TDLS */
11088
11089
11090 #ifdef ANDROID
11091
11092 typedef struct android_wifi_priv_cmd {
11093         char *buf;
11094         int used_len;
11095         int total_len;
11096 } android_wifi_priv_cmd;
11097
11098 static int drv_errors = 0;
11099
11100 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv)
11101 {
11102         drv_errors++;
11103         if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
11104                 drv_errors = 0;
11105                 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
11106         }
11107 }
11108
11109
11110 static int android_priv_cmd(struct i802_bss *bss, const char *cmd)
11111 {
11112         struct wpa_driver_nl80211_data *drv = bss->drv;
11113         struct ifreq ifr;
11114         android_wifi_priv_cmd priv_cmd;
11115         char buf[MAX_DRV_CMD_SIZE];
11116         int ret;
11117
11118         os_memset(&ifr, 0, sizeof(ifr));
11119         os_memset(&priv_cmd, 0, sizeof(priv_cmd));
11120         os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
11121
11122         os_memset(buf, 0, sizeof(buf));
11123         os_strlcpy(buf, cmd, sizeof(buf));
11124
11125         priv_cmd.buf = buf;
11126         priv_cmd.used_len = sizeof(buf);
11127         priv_cmd.total_len = sizeof(buf);
11128         ifr.ifr_data = &priv_cmd;
11129
11130         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
11131         if (ret < 0) {
11132                 wpa_printf(MSG_ERROR, "%s: failed to issue private commands",
11133                            __func__);
11134                 wpa_driver_send_hang_msg(drv);
11135                 return ret;
11136         }
11137
11138         drv_errors = 0;
11139         return 0;
11140 }
11141
11142
11143 static int android_pno_start(struct i802_bss *bss,
11144                              struct wpa_driver_scan_params *params)
11145 {
11146         struct wpa_driver_nl80211_data *drv = bss->drv;
11147         struct ifreq ifr;
11148         android_wifi_priv_cmd priv_cmd;
11149         int ret = 0, i = 0, bp;
11150         char buf[WEXT_PNO_MAX_COMMAND_SIZE];
11151
11152         bp = WEXT_PNOSETUP_HEADER_SIZE;
11153         os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp);
11154         buf[bp++] = WEXT_PNO_TLV_PREFIX;
11155         buf[bp++] = WEXT_PNO_TLV_VERSION;
11156         buf[bp++] = WEXT_PNO_TLV_SUBVERSION;
11157         buf[bp++] = WEXT_PNO_TLV_RESERVED;
11158
11159         while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) {
11160                 /* Check that there is enough space needed for 1 more SSID, the
11161                  * other sections and null termination */
11162                 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN +
11163                      WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf))
11164                         break;
11165                 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan",
11166                                   params->ssids[i].ssid,
11167                                   params->ssids[i].ssid_len);
11168                 buf[bp++] = WEXT_PNO_SSID_SECTION;
11169                 buf[bp++] = params->ssids[i].ssid_len;
11170                 os_memcpy(&buf[bp], params->ssids[i].ssid,
11171                           params->ssids[i].ssid_len);
11172                 bp += params->ssids[i].ssid_len;
11173                 i++;
11174         }
11175
11176         buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION;
11177         os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x",
11178                     WEXT_PNO_SCAN_INTERVAL);
11179         bp += WEXT_PNO_SCAN_INTERVAL_LENGTH;
11180
11181         buf[bp++] = WEXT_PNO_REPEAT_SECTION;
11182         os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x",
11183                     WEXT_PNO_REPEAT);
11184         bp += WEXT_PNO_REPEAT_LENGTH;
11185
11186         buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION;
11187         os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x",
11188                     WEXT_PNO_MAX_REPEAT);
11189         bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1;
11190
11191         memset(&ifr, 0, sizeof(ifr));
11192         memset(&priv_cmd, 0, sizeof(priv_cmd));
11193         os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
11194
11195         priv_cmd.buf = buf;
11196         priv_cmd.used_len = bp;
11197         priv_cmd.total_len = bp;
11198         ifr.ifr_data = &priv_cmd;
11199
11200         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
11201
11202         if (ret < 0) {
11203                 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d",
11204                            ret);
11205                 wpa_driver_send_hang_msg(drv);
11206                 return ret;
11207         }
11208
11209         drv_errors = 0;
11210
11211         return android_priv_cmd(bss, "PNOFORCE 1");
11212 }
11213
11214
11215 static int android_pno_stop(struct i802_bss *bss)
11216 {
11217         return android_priv_cmd(bss, "PNOFORCE 0");
11218 }
11219
11220 #endif /* ANDROID */
11221
11222
11223 static int driver_nl80211_set_key(const char *ifname, void *priv,
11224                                   enum wpa_alg alg, const u8 *addr,
11225                                   int key_idx, int set_tx,
11226                                   const u8 *seq, size_t seq_len,
11227                                   const u8 *key, size_t key_len)
11228 {
11229         struct i802_bss *bss = priv;
11230         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
11231                                           set_tx, seq, seq_len, key, key_len);
11232 }
11233
11234
11235 static int driver_nl80211_scan2(void *priv,
11236                                 struct wpa_driver_scan_params *params)
11237 {
11238         struct i802_bss *bss = priv;
11239         return wpa_driver_nl80211_scan(bss, params);
11240 }
11241
11242
11243 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
11244                                          int reason_code)
11245 {
11246         struct i802_bss *bss = priv;
11247         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
11248 }
11249
11250
11251 static int driver_nl80211_authenticate(void *priv,
11252                                        struct wpa_driver_auth_params *params)
11253 {
11254         struct i802_bss *bss = priv;
11255         return wpa_driver_nl80211_authenticate(bss, params);
11256 }
11257
11258
11259 static void driver_nl80211_deinit(void *priv)
11260 {
11261         struct i802_bss *bss = priv;
11262         wpa_driver_nl80211_deinit(bss);
11263 }
11264
11265
11266 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
11267                                     const char *ifname)
11268 {
11269         struct i802_bss *bss = priv;
11270         return wpa_driver_nl80211_if_remove(bss, type, ifname);
11271 }
11272
11273
11274 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
11275                                     size_t data_len, int noack)
11276 {
11277         struct i802_bss *bss = priv;
11278         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
11279                                             0, 0, 0, 0);
11280 }
11281
11282
11283 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
11284 {
11285         struct i802_bss *bss = priv;
11286         return wpa_driver_nl80211_sta_remove(bss, addr);
11287 }
11288
11289
11290 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
11291                                        const char *ifname, int vlan_id)
11292 {
11293         struct i802_bss *bss = priv;
11294         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
11295 }
11296
11297
11298 static int driver_nl80211_read_sta_data(void *priv,
11299                                         struct hostap_sta_driver_data *data,
11300                                         const u8 *addr)
11301 {
11302         struct i802_bss *bss = priv;
11303         return i802_read_sta_data(bss, data, addr);
11304 }
11305
11306
11307 static int driver_nl80211_send_action(void *priv, unsigned int freq,
11308                                       unsigned int wait_time,
11309                                       const u8 *dst, const u8 *src,
11310                                       const u8 *bssid,
11311                                       const u8 *data, size_t data_len,
11312                                       int no_cck)
11313 {
11314         struct i802_bss *bss = priv;
11315         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
11316                                               bssid, data, data_len, no_cck);
11317 }
11318
11319
11320 static int driver_nl80211_probe_req_report(void *priv, int report)
11321 {
11322         struct i802_bss *bss = priv;
11323         return wpa_driver_nl80211_probe_req_report(bss, report);
11324 }
11325
11326
11327 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
11328                                             const u8 *ies, size_t ies_len)
11329 {
11330         int ret;
11331         struct nl_msg *msg;
11332         struct i802_bss *bss = priv;
11333         struct wpa_driver_nl80211_data *drv = bss->drv;
11334         u16 mdid = WPA_GET_LE16(md);
11335
11336         msg = nlmsg_alloc();
11337         if (!msg)
11338                 return -ENOMEM;
11339
11340         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
11341         nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES);
11342         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11343         NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies);
11344         NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid);
11345
11346         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
11347         if (ret) {
11348                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
11349                            "err=%d (%s)", ret, strerror(-ret));
11350         }
11351
11352         return ret;
11353
11354 nla_put_failure:
11355         nlmsg_free(msg);
11356         return -ENOBUFS;
11357 }
11358
11359
11360 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
11361 {
11362         struct i802_bss *bss = priv;
11363         struct wpa_driver_nl80211_data *drv = bss->drv;
11364
11365         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
11366                 return NULL;
11367
11368         return bss->addr;
11369 }
11370
11371
11372 static const char * scan_state_str(enum scan_states scan_state)
11373 {
11374         switch (scan_state) {
11375         case NO_SCAN:
11376                 return "NO_SCAN";
11377         case SCAN_REQUESTED:
11378                 return "SCAN_REQUESTED";
11379         case SCAN_STARTED:
11380                 return "SCAN_STARTED";
11381         case SCAN_COMPLETED:
11382                 return "SCAN_COMPLETED";
11383         case SCAN_ABORTED:
11384                 return "SCAN_ABORTED";
11385         case SCHED_SCAN_STARTED:
11386                 return "SCHED_SCAN_STARTED";
11387         case SCHED_SCAN_STOPPED:
11388                 return "SCHED_SCAN_STOPPED";
11389         case SCHED_SCAN_RESULTS:
11390                 return "SCHED_SCAN_RESULTS";
11391         }
11392
11393         return "??";
11394 }
11395
11396
11397 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
11398 {
11399         struct i802_bss *bss = priv;
11400         struct wpa_driver_nl80211_data *drv = bss->drv;
11401         int res;
11402         char *pos, *end;
11403
11404         pos = buf;
11405         end = buf + buflen;
11406
11407         res = os_snprintf(pos, end - pos,
11408                           "ifindex=%d\n"
11409                           "ifname=%s\n"
11410                           "brname=%s\n"
11411                           "addr=" MACSTR "\n"
11412                           "freq=%d\n"
11413                           "%s%s%s%s%s",
11414                           bss->ifindex,
11415                           bss->ifname,
11416                           bss->brname,
11417                           MAC2STR(bss->addr),
11418                           bss->freq,
11419                           bss->beacon_set ? "beacon_set=1\n" : "",
11420                           bss->added_if_into_bridge ?
11421                           "added_if_into_bridge=1\n" : "",
11422                           bss->added_bridge ? "added_bridge=1\n" : "",
11423                           bss->in_deinit ? "in_deinit=1\n" : "",
11424                           bss->if_dynamic ? "if_dynamic=1\n" : "");
11425         if (res < 0 || res >= end - pos)
11426                 return pos - buf;
11427         pos += res;
11428
11429         if (bss->wdev_id_set) {
11430                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
11431                                   (unsigned long long) bss->wdev_id);
11432                 if (res < 0 || res >= end - pos)
11433                         return pos - buf;
11434                 pos += res;
11435         }
11436
11437         res = os_snprintf(pos, end - pos,
11438                           "phyname=%s\n"
11439                           "drv_ifindex=%d\n"
11440                           "operstate=%d\n"
11441                           "scan_state=%s\n"
11442                           "auth_bssid=" MACSTR "\n"
11443                           "auth_attempt_bssid=" MACSTR "\n"
11444                           "bssid=" MACSTR "\n"
11445                           "prev_bssid=" MACSTR "\n"
11446                           "associated=%d\n"
11447                           "assoc_freq=%u\n"
11448                           "monitor_sock=%d\n"
11449                           "monitor_ifidx=%d\n"
11450                           "monitor_refcount=%d\n"
11451                           "last_mgmt_freq=%u\n"
11452                           "eapol_tx_sock=%d\n"
11453                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
11454                           drv->phyname,
11455                           drv->ifindex,
11456                           drv->operstate,
11457                           scan_state_str(drv->scan_state),
11458                           MAC2STR(drv->auth_bssid),
11459                           MAC2STR(drv->auth_attempt_bssid),
11460                           MAC2STR(drv->bssid),
11461                           MAC2STR(drv->prev_bssid),
11462                           drv->associated,
11463                           drv->assoc_freq,
11464                           drv->monitor_sock,
11465                           drv->monitor_ifidx,
11466                           drv->monitor_refcount,
11467                           drv->last_mgmt_freq,
11468                           drv->eapol_tx_sock,
11469                           drv->ignore_if_down_event ?
11470                           "ignore_if_down_event=1\n" : "",
11471                           drv->scan_complete_events ?
11472                           "scan_complete_events=1\n" : "",
11473                           drv->disabled_11b_rates ?
11474                           "disabled_11b_rates=1\n" : "",
11475                           drv->pending_remain_on_chan ?
11476                           "pending_remain_on_chan=1\n" : "",
11477                           drv->in_interface_list ? "in_interface_list=1\n" : "",
11478                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
11479                           drv->poll_command_supported ?
11480                           "poll_command_supported=1\n" : "",
11481                           drv->data_tx_status ? "data_tx_status=1\n" : "",
11482                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
11483                           drv->retry_auth ? "retry_auth=1\n" : "",
11484                           drv->use_monitor ? "use_monitor=1\n" : "",
11485                           drv->ignore_next_local_disconnect ?
11486                           "ignore_next_local_disconnect=1\n" : "",
11487                           drv->allow_p2p_device ? "allow_p2p_device=1\n" : "");
11488         if (res < 0 || res >= end - pos)
11489                 return pos - buf;
11490         pos += res;
11491
11492         if (drv->has_capability) {
11493                 res = os_snprintf(pos, end - pos,
11494                                   "capa.key_mgmt=0x%x\n"
11495                                   "capa.enc=0x%x\n"
11496                                   "capa.auth=0x%x\n"
11497                                   "capa.flags=0x%x\n"
11498                                   "capa.max_scan_ssids=%d\n"
11499                                   "capa.max_sched_scan_ssids=%d\n"
11500                                   "capa.sched_scan_supported=%d\n"
11501                                   "capa.max_match_sets=%d\n"
11502                                   "capa.max_remain_on_chan=%u\n"
11503                                   "capa.max_stations=%u\n"
11504                                   "capa.probe_resp_offloads=0x%x\n"
11505                                   "capa.max_acl_mac_addrs=%u\n"
11506                                   "capa.num_multichan_concurrent=%u\n",
11507                                   drv->capa.key_mgmt,
11508                                   drv->capa.enc,
11509                                   drv->capa.auth,
11510                                   drv->capa.flags,
11511                                   drv->capa.max_scan_ssids,
11512                                   drv->capa.max_sched_scan_ssids,
11513                                   drv->capa.sched_scan_supported,
11514                                   drv->capa.max_match_sets,
11515                                   drv->capa.max_remain_on_chan,
11516                                   drv->capa.max_stations,
11517                                   drv->capa.probe_resp_offloads,
11518                                   drv->capa.max_acl_mac_addrs,
11519                                   drv->capa.num_multichan_concurrent);
11520                 if (res < 0 || res >= end - pos)
11521                         return pos - buf;
11522                 pos += res;
11523         }
11524
11525         return pos - buf;
11526 }
11527
11528
11529 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
11530 {
11531         if (settings->head)
11532                 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD,
11533                         settings->head_len, settings->head);
11534
11535         if (settings->tail)
11536                 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL,
11537                         settings->tail_len, settings->tail);
11538
11539         if (settings->beacon_ies)
11540                 NLA_PUT(msg, NL80211_ATTR_IE,
11541                         settings->beacon_ies_len, settings->beacon_ies);
11542
11543         if (settings->proberesp_ies)
11544                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
11545                         settings->proberesp_ies_len, settings->proberesp_ies);
11546
11547         if (settings->assocresp_ies)
11548                 NLA_PUT(msg,
11549                         NL80211_ATTR_IE_ASSOC_RESP,
11550                         settings->assocresp_ies_len, settings->assocresp_ies);
11551
11552         if (settings->probe_resp)
11553                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP,
11554                         settings->probe_resp_len, settings->probe_resp);
11555
11556         return 0;
11557
11558 nla_put_failure:
11559         return -ENOBUFS;
11560 }
11561
11562
11563 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
11564 {
11565         struct nl_msg *msg;
11566         struct i802_bss *bss = priv;
11567         struct wpa_driver_nl80211_data *drv = bss->drv;
11568         struct nlattr *beacon_csa;
11569         int ret = -ENOBUFS;
11570
11571         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
11572                    settings->cs_count, settings->block_tx,
11573                    settings->freq_params.freq, settings->freq_params.bandwidth,
11574                    settings->freq_params.center_freq1,
11575                    settings->freq_params.center_freq2);
11576
11577         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
11578                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
11579                 return -EOPNOTSUPP;
11580         }
11581
11582         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
11583             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
11584                 return -EOPNOTSUPP;
11585
11586         /* check settings validity */
11587         if (!settings->beacon_csa.tail ||
11588             ((settings->beacon_csa.tail_len <=
11589               settings->counter_offset_beacon) ||
11590              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
11591               settings->cs_count)))
11592                 return -EINVAL;
11593
11594         if (settings->beacon_csa.probe_resp &&
11595             ((settings->beacon_csa.probe_resp_len <=
11596               settings->counter_offset_presp) ||
11597              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
11598               settings->cs_count)))
11599                 return -EINVAL;
11600
11601         msg = nlmsg_alloc();
11602         if (!msg)
11603                 return -ENOMEM;
11604
11605         nl80211_cmd(drv, msg, 0, NL80211_CMD_CHANNEL_SWITCH);
11606         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11607         NLA_PUT_U32(msg, NL80211_ATTR_CH_SWITCH_COUNT, settings->cs_count);
11608         ret = nl80211_put_freq_params(msg, &settings->freq_params);
11609         if (ret)
11610                 goto error;
11611
11612         if (settings->block_tx)
11613                 NLA_PUT_FLAG(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX);
11614
11615         /* beacon_after params */
11616         ret = set_beacon_data(msg, &settings->beacon_after);
11617         if (ret)
11618                 goto error;
11619
11620         /* beacon_csa params */
11621         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
11622         if (!beacon_csa)
11623                 goto nla_put_failure;
11624
11625         ret = set_beacon_data(msg, &settings->beacon_csa);
11626         if (ret)
11627                 goto error;
11628
11629         NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
11630                     settings->counter_offset_beacon);
11631
11632         if (settings->beacon_csa.probe_resp)
11633                 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
11634                             settings->counter_offset_presp);
11635
11636         nla_nest_end(msg, beacon_csa);
11637         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
11638         if (ret) {
11639                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
11640                            ret, strerror(-ret));
11641         }
11642         return ret;
11643
11644 nla_put_failure:
11645         ret = -ENOBUFS;
11646 error:
11647         nlmsg_free(msg);
11648         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
11649         return ret;
11650 }
11651
11652
11653 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
11654                                u8 qos_map_set_len)
11655 {
11656         struct i802_bss *bss = priv;
11657         struct wpa_driver_nl80211_data *drv = bss->drv;
11658         struct nl_msg *msg;
11659         int ret;
11660
11661         msg = nlmsg_alloc();
11662         if (!msg)
11663                 return -ENOMEM;
11664
11665         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
11666                     qos_map_set, qos_map_set_len);
11667
11668         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_QOS_MAP);
11669         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11670         NLA_PUT(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set);
11671
11672         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
11673         if (ret)
11674                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
11675
11676         return ret;
11677
11678 nla_put_failure:
11679         nlmsg_free(msg);
11680         return -ENOBUFS;
11681 }
11682
11683
11684 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
11685         .name = "nl80211",
11686         .desc = "Linux nl80211/cfg80211",
11687         .get_bssid = wpa_driver_nl80211_get_bssid,
11688         .get_ssid = wpa_driver_nl80211_get_ssid,
11689         .set_key = driver_nl80211_set_key,
11690         .scan2 = driver_nl80211_scan2,
11691         .sched_scan = wpa_driver_nl80211_sched_scan,
11692         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
11693         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
11694         .deauthenticate = driver_nl80211_deauthenticate,
11695         .authenticate = driver_nl80211_authenticate,
11696         .associate = wpa_driver_nl80211_associate,
11697         .global_init = nl80211_global_init,
11698         .global_deinit = nl80211_global_deinit,
11699         .init2 = wpa_driver_nl80211_init,
11700         .deinit = driver_nl80211_deinit,
11701         .get_capa = wpa_driver_nl80211_get_capa,
11702         .set_operstate = wpa_driver_nl80211_set_operstate,
11703         .set_supp_port = wpa_driver_nl80211_set_supp_port,
11704         .set_country = wpa_driver_nl80211_set_country,
11705         .get_country = wpa_driver_nl80211_get_country,
11706         .set_ap = wpa_driver_nl80211_set_ap,
11707         .set_acl = wpa_driver_nl80211_set_acl,
11708         .if_add = wpa_driver_nl80211_if_add,
11709         .if_remove = driver_nl80211_if_remove,
11710         .send_mlme = driver_nl80211_send_mlme,
11711         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
11712         .sta_add = wpa_driver_nl80211_sta_add,
11713         .sta_remove = driver_nl80211_sta_remove,
11714         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
11715         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
11716         .hapd_init = i802_init,
11717         .hapd_deinit = i802_deinit,
11718         .set_wds_sta = i802_set_wds_sta,
11719         .get_seqnum = i802_get_seqnum,
11720         .flush = i802_flush,
11721         .get_inact_sec = i802_get_inact_sec,
11722         .sta_clear_stats = i802_sta_clear_stats,
11723         .set_rts = i802_set_rts,
11724         .set_frag = i802_set_frag,
11725         .set_tx_queue_params = i802_set_tx_queue_params,
11726         .set_sta_vlan = driver_nl80211_set_sta_vlan,
11727         .sta_deauth = i802_sta_deauth,
11728         .sta_disassoc = i802_sta_disassoc,
11729         .read_sta_data = driver_nl80211_read_sta_data,
11730         .set_freq = i802_set_freq,
11731         .send_action = driver_nl80211_send_action,
11732         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
11733         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
11734         .cancel_remain_on_channel =
11735         wpa_driver_nl80211_cancel_remain_on_channel,
11736         .probe_req_report = driver_nl80211_probe_req_report,
11737         .deinit_ap = wpa_driver_nl80211_deinit_ap,
11738         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
11739         .resume = wpa_driver_nl80211_resume,
11740         .send_ft_action = nl80211_send_ft_action,
11741         .signal_monitor = nl80211_signal_monitor,
11742         .signal_poll = nl80211_signal_poll,
11743         .send_frame = nl80211_send_frame,
11744         .shared_freq = wpa_driver_nl80211_shared_freq,
11745         .set_param = nl80211_set_param,
11746         .get_radio_name = nl80211_get_radio_name,
11747         .add_pmkid = nl80211_add_pmkid,
11748         .remove_pmkid = nl80211_remove_pmkid,
11749         .flush_pmkid = nl80211_flush_pmkid,
11750         .set_rekey_info = nl80211_set_rekey_info,
11751         .poll_client = nl80211_poll_client,
11752         .set_p2p_powersave = nl80211_set_p2p_powersave,
11753         .start_dfs_cac = nl80211_start_radar_detection,
11754         .stop_ap = wpa_driver_nl80211_stop_ap,
11755 #ifdef CONFIG_TDLS
11756         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
11757         .tdls_oper = nl80211_tdls_oper,
11758 #endif /* CONFIG_TDLS */
11759         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
11760         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
11761         .get_survey = wpa_driver_nl80211_get_survey,
11762         .status = wpa_driver_nl80211_status,
11763         .switch_channel = nl80211_switch_channel,
11764 #ifdef ANDROID_P2P
11765         .set_noa = wpa_driver_set_p2p_noa,
11766         .get_noa = wpa_driver_get_p2p_noa,
11767         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
11768 #endif /* ANDROID_P2P */
11769 #ifdef ANDROID
11770         .driver_cmd = wpa_driver_nl80211_driver_cmd,
11771 #endif /* ANDROID */
11772         .set_qos_map = nl80211_set_qos_map,
11773 };