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                         enum nl80211_iftype old_mode = drv->nlmode;
4905
4906                         /*
4907                          * mac80211 does not allow scan requests in AP mode, so
4908                          * try to do this in station mode.
4909                          */
4910                         if (wpa_driver_nl80211_set_mode(
4911                                     bss, NL80211_IFTYPE_STATION))
4912                                 goto nla_put_failure;
4913
4914                         if (wpa_driver_nl80211_scan(bss, params)) {
4915                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
4916                                 goto nla_put_failure;
4917                         }
4918
4919                         /* Restore AP mode when processing scan results */
4920                         drv->ap_scan_as_station = old_mode;
4921                         ret = 0;
4922                 } else
4923                         goto nla_put_failure;
4924         }
4925
4926         drv->scan_state = SCAN_REQUESTED;
4927         /* Not all drivers generate "scan completed" wireless event, so try to
4928          * read results after a timeout. */
4929         timeout = 10;
4930         if (drv->scan_complete_events) {
4931                 /*
4932                  * The driver seems to deliver events to notify when scan is
4933                  * complete, so use longer timeout to avoid race conditions
4934                  * with scanning and following association request.
4935                  */
4936                 timeout = 30;
4937         }
4938         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
4939                    "seconds", ret, timeout);
4940         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
4941         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
4942                                drv, drv->ctx);
4943
4944 nla_put_failure:
4945         nlmsg_free(msg);
4946         return ret;
4947 }
4948
4949
4950 /**
4951  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
4952  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
4953  * @params: Scan parameters
4954  * @interval: Interval between scan cycles in milliseconds
4955  * Returns: 0 on success, -1 on failure or if not supported
4956  */
4957 static int wpa_driver_nl80211_sched_scan(void *priv,
4958                                          struct wpa_driver_scan_params *params,
4959                                          u32 interval)
4960 {
4961         struct i802_bss *bss = priv;
4962         struct wpa_driver_nl80211_data *drv = bss->drv;
4963         int ret = -1;
4964         struct nl_msg *msg;
4965         size_t i;
4966
4967         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request");
4968
4969 #ifdef ANDROID
4970         if (!drv->capa.sched_scan_supported)
4971                 return android_pno_start(bss, params);
4972 #endif /* ANDROID */
4973
4974         msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params,
4975                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
4976         if (!msg)
4977                 goto nla_put_failure;
4978
4979         NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
4980
4981         if ((drv->num_filter_ssids &&
4982             (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
4983             params->filter_rssi) {
4984                 struct nlattr *match_sets;
4985                 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
4986                 if (match_sets == NULL)
4987                         goto nla_put_failure;
4988
4989                 for (i = 0; i < drv->num_filter_ssids; i++) {
4990                         struct nlattr *match_set_ssid;
4991                         wpa_hexdump_ascii(MSG_MSGDUMP,
4992                                           "nl80211: Sched scan filter SSID",
4993                                           drv->filter_ssids[i].ssid,
4994                                           drv->filter_ssids[i].ssid_len);
4995
4996                         match_set_ssid = nla_nest_start(msg, i + 1);
4997                         if (match_set_ssid == NULL)
4998                                 goto nla_put_failure;
4999                         NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
5000                                 drv->filter_ssids[i].ssid_len,
5001                                 drv->filter_ssids[i].ssid);
5002                         if (params->filter_rssi)
5003                                 NLA_PUT_U32(msg,
5004                                             NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
5005                                             params->filter_rssi);
5006
5007                         nla_nest_end(msg, match_set_ssid);
5008                 }
5009
5010                 /*
5011                  * Due to backward compatibility code, newer kernels treat this
5012                  * matchset (with only an RSSI filter) as the default for all
5013                  * other matchsets, unless it's the only one, in which case the
5014                  * matchset will actually allow all SSIDs above the RSSI.
5015                  */
5016                 if (params->filter_rssi) {
5017                         struct nlattr *match_set_rssi;
5018                         match_set_rssi = nla_nest_start(msg, 0);
5019                         if (match_set_rssi == NULL)
5020                                 goto nla_put_failure;
5021                         NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
5022                                     params->filter_rssi);
5023                         wpa_printf(MSG_MSGDUMP,
5024                                    "nl80211: Sched scan RSSI filter %d dBm",
5025                                    params->filter_rssi);
5026                         nla_nest_end(msg, match_set_rssi);
5027                 }
5028
5029                 nla_nest_end(msg, match_sets);
5030         }
5031
5032         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5033
5034         /* TODO: if we get an error here, we should fall back to normal scan */
5035
5036         msg = NULL;
5037         if (ret) {
5038                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
5039                            "ret=%d (%s)", ret, strerror(-ret));
5040                 goto nla_put_failure;
5041         }
5042
5043         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
5044                    "scan interval %d msec", ret, interval);
5045
5046 nla_put_failure:
5047         nlmsg_free(msg);
5048         return ret;
5049 }
5050
5051
5052 /**
5053  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
5054  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
5055  * Returns: 0 on success, -1 on failure or if not supported
5056  */
5057 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
5058 {
5059         struct i802_bss *bss = priv;
5060         struct wpa_driver_nl80211_data *drv = bss->drv;
5061         int ret = 0;
5062         struct nl_msg *msg;
5063
5064 #ifdef ANDROID
5065         if (!drv->capa.sched_scan_supported)
5066                 return android_pno_stop(bss);
5067 #endif /* ANDROID */
5068
5069         msg = nlmsg_alloc();
5070         if (!msg)
5071                 return -1;
5072
5073         nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
5074
5075         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5076
5077         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5078         msg = NULL;
5079         if (ret) {
5080                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
5081                            "ret=%d (%s)", ret, strerror(-ret));
5082                 goto nla_put_failure;
5083         }
5084
5085         wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
5086
5087 nla_put_failure:
5088         nlmsg_free(msg);
5089         return ret;
5090 }
5091
5092
5093 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
5094 {
5095         const u8 *end, *pos;
5096
5097         if (ies == NULL)
5098                 return NULL;
5099
5100         pos = ies;
5101         end = ies + ies_len;
5102
5103         while (pos + 1 < end) {
5104                 if (pos + 2 + pos[1] > end)
5105                         break;
5106                 if (pos[0] == ie)
5107                         return pos;
5108                 pos += 2 + pos[1];
5109         }
5110
5111         return NULL;
5112 }
5113
5114
5115 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
5116                                  const u8 *ie, size_t ie_len)
5117 {
5118         const u8 *ssid;
5119         size_t i;
5120
5121         if (drv->filter_ssids == NULL)
5122                 return 0;
5123
5124         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
5125         if (ssid == NULL)
5126                 return 1;
5127
5128         for (i = 0; i < drv->num_filter_ssids; i++) {
5129                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
5130                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
5131                     0)
5132                         return 0;
5133         }
5134
5135         return 1;
5136 }
5137
5138
5139 static int bss_info_handler(struct nl_msg *msg, void *arg)
5140 {
5141         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5142         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5143         struct nlattr *bss[NL80211_BSS_MAX + 1];
5144         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
5145                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
5146                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
5147                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
5148                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
5149                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
5150                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
5151                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
5152                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
5153                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
5154                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
5155                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
5156         };
5157         struct nl80211_bss_info_arg *_arg = arg;
5158         struct wpa_scan_results *res = _arg->res;
5159         struct wpa_scan_res **tmp;
5160         struct wpa_scan_res *r;
5161         const u8 *ie, *beacon_ie;
5162         size_t ie_len, beacon_ie_len;
5163         u8 *pos;
5164         size_t i;
5165
5166         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5167                   genlmsg_attrlen(gnlh, 0), NULL);
5168         if (!tb[NL80211_ATTR_BSS])
5169                 return NL_SKIP;
5170         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
5171                              bss_policy))
5172                 return NL_SKIP;
5173         if (bss[NL80211_BSS_STATUS]) {
5174                 enum nl80211_bss_status status;
5175                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
5176                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
5177                     bss[NL80211_BSS_FREQUENCY]) {
5178                         _arg->assoc_freq =
5179                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
5180                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
5181                                    _arg->assoc_freq);
5182                 }
5183                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
5184                     bss[NL80211_BSS_BSSID]) {
5185                         os_memcpy(_arg->assoc_bssid,
5186                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
5187                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
5188                                    MACSTR, MAC2STR(_arg->assoc_bssid));
5189                 }
5190         }
5191         if (!res)
5192                 return NL_SKIP;
5193         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
5194                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
5195                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
5196         } else {
5197                 ie = NULL;
5198                 ie_len = 0;
5199         }
5200         if (bss[NL80211_BSS_BEACON_IES]) {
5201                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
5202                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
5203         } else {
5204                 beacon_ie = NULL;
5205                 beacon_ie_len = 0;
5206         }
5207
5208         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
5209                                   ie ? ie_len : beacon_ie_len))
5210                 return NL_SKIP;
5211
5212         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
5213         if (r == NULL)
5214                 return NL_SKIP;
5215         if (bss[NL80211_BSS_BSSID])
5216                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
5217                           ETH_ALEN);
5218         if (bss[NL80211_BSS_FREQUENCY])
5219                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
5220         if (bss[NL80211_BSS_BEACON_INTERVAL])
5221                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
5222         if (bss[NL80211_BSS_CAPABILITY])
5223                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
5224         r->flags |= WPA_SCAN_NOISE_INVALID;
5225         if (bss[NL80211_BSS_SIGNAL_MBM]) {
5226                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
5227                 r->level /= 100; /* mBm to dBm */
5228                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
5229         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
5230                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
5231                 r->flags |= WPA_SCAN_QUAL_INVALID;
5232         } else
5233                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
5234         if (bss[NL80211_BSS_TSF])
5235                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
5236         if (bss[NL80211_BSS_SEEN_MS_AGO])
5237                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
5238         r->ie_len = ie_len;
5239         pos = (u8 *) (r + 1);
5240         if (ie) {
5241                 os_memcpy(pos, ie, ie_len);
5242                 pos += ie_len;
5243         }
5244         r->beacon_ie_len = beacon_ie_len;
5245         if (beacon_ie)
5246                 os_memcpy(pos, beacon_ie, beacon_ie_len);
5247
5248         if (bss[NL80211_BSS_STATUS]) {
5249                 enum nl80211_bss_status status;
5250                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
5251                 switch (status) {
5252                 case NL80211_BSS_STATUS_AUTHENTICATED:
5253                         r->flags |= WPA_SCAN_AUTHENTICATED;
5254                         break;
5255                 case NL80211_BSS_STATUS_ASSOCIATED:
5256                         r->flags |= WPA_SCAN_ASSOCIATED;
5257                         break;
5258                 default:
5259                         break;
5260                 }
5261         }
5262
5263         /*
5264          * cfg80211 maintains separate BSS table entries for APs if the same
5265          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
5266          * not use frequency as a separate key in the BSS table, so filter out
5267          * duplicated entries. Prefer associated BSS entry in such a case in
5268          * order to get the correct frequency into the BSS table. Similarly,
5269          * prefer newer entries over older.
5270          */
5271         for (i = 0; i < res->num; i++) {
5272                 const u8 *s1, *s2;
5273                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
5274                         continue;
5275
5276                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
5277                                     res->res[i]->ie_len, WLAN_EID_SSID);
5278                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
5279                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
5280                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
5281                         continue;
5282
5283                 /* Same BSSID,SSID was already included in scan results */
5284                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
5285                            "for " MACSTR, MAC2STR(r->bssid));
5286
5287                 if (((r->flags & WPA_SCAN_ASSOCIATED) &&
5288                      !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) ||
5289                     r->age < res->res[i]->age) {
5290                         os_free(res->res[i]);
5291                         res->res[i] = r;
5292                 } else
5293                         os_free(r);
5294                 return NL_SKIP;
5295         }
5296
5297         tmp = os_realloc_array(res->res, res->num + 1,
5298                                sizeof(struct wpa_scan_res *));
5299         if (tmp == NULL) {
5300                 os_free(r);
5301                 return NL_SKIP;
5302         }
5303         tmp[res->num++] = r;
5304         res->res = tmp;
5305
5306         return NL_SKIP;
5307 }
5308
5309
5310 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
5311                                  const u8 *addr)
5312 {
5313         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
5314                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
5315                            "mismatch (" MACSTR ")", MAC2STR(addr));
5316                 wpa_driver_nl80211_mlme(drv, addr,
5317                                         NL80211_CMD_DEAUTHENTICATE,
5318                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
5319         }
5320 }
5321
5322
5323 static void wpa_driver_nl80211_check_bss_status(
5324         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
5325 {
5326         size_t i;
5327
5328         for (i = 0; i < res->num; i++) {
5329                 struct wpa_scan_res *r = res->res[i];
5330                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
5331                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
5332                                    "indicates BSS status with " MACSTR
5333                                    " as authenticated",
5334                                    MAC2STR(r->bssid));
5335                         if (is_sta_interface(drv->nlmode) &&
5336                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
5337                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
5338                             0) {
5339                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
5340                                            " in local state (auth=" MACSTR
5341                                            " assoc=" MACSTR ")",
5342                                            MAC2STR(drv->auth_bssid),
5343                                            MAC2STR(drv->bssid));
5344                                 clear_state_mismatch(drv, r->bssid);
5345                         }
5346                 }
5347
5348                 if (r->flags & WPA_SCAN_ASSOCIATED) {
5349                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
5350                                    "indicate BSS status with " MACSTR
5351                                    " as associated",
5352                                    MAC2STR(r->bssid));
5353                         if (is_sta_interface(drv->nlmode) &&
5354                             !drv->associated) {
5355                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
5356                                            "(not associated) does not match "
5357                                            "with BSS state");
5358                                 clear_state_mismatch(drv, r->bssid);
5359                         } else if (is_sta_interface(drv->nlmode) &&
5360                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
5361                                    0) {
5362                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
5363                                            "(associated with " MACSTR ") does "
5364                                            "not match with BSS state",
5365                                            MAC2STR(drv->bssid));
5366                                 clear_state_mismatch(drv, r->bssid);
5367                                 clear_state_mismatch(drv, drv->bssid);
5368                         }
5369                 }
5370         }
5371 }
5372
5373
5374 static struct wpa_scan_results *
5375 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
5376 {
5377         struct nl_msg *msg;
5378         struct wpa_scan_results *res;
5379         int ret;
5380         struct nl80211_bss_info_arg arg;
5381
5382         res = os_zalloc(sizeof(*res));
5383         if (res == NULL)
5384                 return NULL;
5385         msg = nlmsg_alloc();
5386         if (!msg)
5387                 goto nla_put_failure;
5388
5389         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
5390         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
5391                 goto nla_put_failure;
5392
5393         arg.drv = drv;
5394         arg.res = res;
5395         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
5396         msg = NULL;
5397         if (ret == 0) {
5398                 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
5399                            "BSSes)", (unsigned long) res->num);
5400                 nl80211_get_noise_for_scan_results(drv, res);
5401                 return res;
5402         }
5403         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
5404                    "(%s)", ret, strerror(-ret));
5405 nla_put_failure:
5406         nlmsg_free(msg);
5407         wpa_scan_results_free(res);
5408         return NULL;
5409 }
5410
5411
5412 /**
5413  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
5414  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
5415  * Returns: Scan results on success, -1 on failure
5416  */
5417 static struct wpa_scan_results *
5418 wpa_driver_nl80211_get_scan_results(void *priv)
5419 {
5420         struct i802_bss *bss = priv;
5421         struct wpa_driver_nl80211_data *drv = bss->drv;
5422         struct wpa_scan_results *res;
5423
5424         res = nl80211_get_scan_results(drv);
5425         if (res)
5426                 wpa_driver_nl80211_check_bss_status(drv, res);
5427         return res;
5428 }
5429
5430
5431 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
5432 {
5433         struct wpa_scan_results *res;
5434         size_t i;
5435
5436         res = nl80211_get_scan_results(drv);
5437         if (res == NULL) {
5438                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
5439                 return;
5440         }
5441
5442         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
5443         for (i = 0; i < res->num; i++) {
5444                 struct wpa_scan_res *r = res->res[i];
5445                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
5446                            (int) i, (int) res->num, MAC2STR(r->bssid),
5447                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
5448                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
5449         }
5450
5451         wpa_scan_results_free(res);
5452 }
5453
5454
5455 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
5456 {
5457         switch (alg) {
5458         case WPA_ALG_WEP:
5459                 if (key_len == 5)
5460                         return WLAN_CIPHER_SUITE_WEP40;
5461                 return WLAN_CIPHER_SUITE_WEP104;
5462         case WPA_ALG_TKIP:
5463                 return WLAN_CIPHER_SUITE_TKIP;
5464         case WPA_ALG_CCMP:
5465                 return WLAN_CIPHER_SUITE_CCMP;
5466         case WPA_ALG_GCMP:
5467                 return WLAN_CIPHER_SUITE_GCMP;
5468         case WPA_ALG_CCMP_256:
5469                 return WLAN_CIPHER_SUITE_CCMP_256;
5470         case WPA_ALG_GCMP_256:
5471                 return WLAN_CIPHER_SUITE_GCMP_256;
5472         case WPA_ALG_IGTK:
5473                 return WLAN_CIPHER_SUITE_AES_CMAC;
5474         case WPA_ALG_BIP_GMAC_128:
5475                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
5476         case WPA_ALG_BIP_GMAC_256:
5477                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
5478         case WPA_ALG_BIP_CMAC_256:
5479                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
5480         case WPA_ALG_SMS4:
5481                 return WLAN_CIPHER_SUITE_SMS4;
5482         case WPA_ALG_KRK:
5483                 return WLAN_CIPHER_SUITE_KRK;
5484         case WPA_ALG_NONE:
5485         case WPA_ALG_PMK:
5486                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
5487                            alg);
5488                 return 0;
5489         }
5490
5491         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
5492                    alg);
5493         return 0;
5494 }
5495
5496
5497 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
5498 {
5499         switch (cipher) {
5500         case WPA_CIPHER_CCMP_256:
5501                 return WLAN_CIPHER_SUITE_CCMP_256;
5502         case WPA_CIPHER_GCMP_256:
5503                 return WLAN_CIPHER_SUITE_GCMP_256;
5504         case WPA_CIPHER_CCMP:
5505                 return WLAN_CIPHER_SUITE_CCMP;
5506         case WPA_CIPHER_GCMP:
5507                 return WLAN_CIPHER_SUITE_GCMP;
5508         case WPA_CIPHER_TKIP:
5509                 return WLAN_CIPHER_SUITE_TKIP;
5510         case WPA_CIPHER_WEP104:
5511                 return WLAN_CIPHER_SUITE_WEP104;
5512         case WPA_CIPHER_WEP40:
5513                 return WLAN_CIPHER_SUITE_WEP40;
5514         }
5515
5516         return 0;
5517 }
5518
5519
5520 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
5521                                        int max_suites)
5522 {
5523         int num_suites = 0;
5524
5525         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
5526                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
5527         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
5528                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
5529         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
5530                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
5531         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
5532                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
5533         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
5534                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
5535         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
5536                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
5537         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
5538                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
5539
5540         return num_suites;
5541 }
5542
5543
5544 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
5545                                       enum wpa_alg alg, const u8 *addr,
5546                                       int key_idx, int set_tx,
5547                                       const u8 *seq, size_t seq_len,
5548                                       const u8 *key, size_t key_len)
5549 {
5550         struct wpa_driver_nl80211_data *drv = bss->drv;
5551         int ifindex;
5552         struct nl_msg *msg;
5553         int ret;
5554         int tdls = 0;
5555
5556         /* Ignore for P2P Device */
5557         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
5558                 return 0;
5559
5560         ifindex = if_nametoindex(ifname);
5561         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
5562                    "set_tx=%d seq_len=%lu key_len=%lu",
5563                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
5564                    (unsigned long) seq_len, (unsigned long) key_len);
5565 #ifdef CONFIG_TDLS
5566         if (key_idx == -1) {
5567                 key_idx = 0;
5568                 tdls = 1;
5569         }
5570 #endif /* CONFIG_TDLS */
5571
5572         msg = nlmsg_alloc();
5573         if (!msg)
5574                 return -ENOMEM;
5575
5576         if (alg == WPA_ALG_NONE) {
5577                 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
5578         } else {
5579                 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
5580                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
5581                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
5582                             wpa_alg_to_cipher_suite(alg, key_len));
5583         }
5584
5585         if (seq && seq_len)
5586                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
5587
5588         if (addr && !is_broadcast_ether_addr(addr)) {
5589                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
5590                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5591
5592                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
5593                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
5594                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
5595                                     NL80211_KEYTYPE_GROUP);
5596                 }
5597         } else if (addr && is_broadcast_ether_addr(addr)) {
5598                 struct nlattr *types;
5599
5600                 wpa_printf(MSG_DEBUG, "   broadcast key");
5601
5602                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
5603                 if (!types)
5604                         goto nla_put_failure;
5605                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
5606                 nla_nest_end(msg, types);
5607         }
5608         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
5609         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5610
5611         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5612         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
5613                 ret = 0;
5614         if (ret)
5615                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
5616                            ret, strerror(-ret));
5617
5618         /*
5619          * If we failed or don't need to set the default TX key (below),
5620          * we're done here.
5621          */
5622         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
5623                 return ret;
5624         if (is_ap_interface(drv->nlmode) && addr &&
5625             !is_broadcast_ether_addr(addr))
5626                 return ret;
5627
5628         msg = nlmsg_alloc();
5629         if (!msg)
5630                 return -ENOMEM;
5631
5632         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
5633         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
5634         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5635         if (alg == WPA_ALG_IGTK)
5636                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
5637         else
5638                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
5639         if (addr && is_broadcast_ether_addr(addr)) {
5640                 struct nlattr *types;
5641
5642                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
5643                 if (!types)
5644                         goto nla_put_failure;
5645                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
5646                 nla_nest_end(msg, types);
5647         } else if (addr) {
5648                 struct nlattr *types;
5649
5650                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
5651                 if (!types)
5652                         goto nla_put_failure;
5653                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST);
5654                 nla_nest_end(msg, types);
5655         }
5656
5657         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5658         if (ret == -ENOENT)
5659                 ret = 0;
5660         if (ret)
5661                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
5662                            "err=%d %s)", ret, strerror(-ret));
5663         return ret;
5664
5665 nla_put_failure:
5666         nlmsg_free(msg);
5667         return -ENOBUFS;
5668 }
5669
5670
5671 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
5672                       int key_idx, int defkey,
5673                       const u8 *seq, size_t seq_len,
5674                       const u8 *key, size_t key_len)
5675 {
5676         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
5677         if (!key_attr)
5678                 return -1;
5679
5680         if (defkey && alg == WPA_ALG_IGTK)
5681                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
5682         else if (defkey)
5683                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
5684
5685         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
5686
5687         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
5688                     wpa_alg_to_cipher_suite(alg, key_len));
5689
5690         if (seq && seq_len)
5691                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
5692
5693         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
5694
5695         nla_nest_end(msg, key_attr);
5696
5697         return 0;
5698  nla_put_failure:
5699         return -1;
5700 }
5701
5702
5703 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
5704                                  struct nl_msg *msg)
5705 {
5706         int i, privacy = 0;
5707         struct nlattr *nl_keys, *nl_key;
5708
5709         for (i = 0; i < 4; i++) {
5710                 if (!params->wep_key[i])
5711                         continue;
5712                 privacy = 1;
5713                 break;
5714         }
5715         if (params->wps == WPS_MODE_PRIVACY)
5716                 privacy = 1;
5717         if (params->pairwise_suite &&
5718             params->pairwise_suite != WPA_CIPHER_NONE)
5719                 privacy = 1;
5720
5721         if (!privacy)
5722                 return 0;
5723
5724         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
5725
5726         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
5727         if (!nl_keys)
5728                 goto nla_put_failure;
5729
5730         for (i = 0; i < 4; i++) {
5731                 if (!params->wep_key[i])
5732                         continue;
5733
5734                 nl_key = nla_nest_start(msg, i);
5735                 if (!nl_key)
5736                         goto nla_put_failure;
5737
5738                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
5739                         params->wep_key[i]);
5740                 if (params->wep_key_len[i] == 5)
5741                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
5742                                     WLAN_CIPHER_SUITE_WEP40);
5743                 else
5744                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
5745                                     WLAN_CIPHER_SUITE_WEP104);
5746
5747                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
5748
5749                 if (i == params->wep_tx_keyidx)
5750                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
5751
5752                 nla_nest_end(msg, nl_key);
5753         }
5754         nla_nest_end(msg, nl_keys);
5755
5756         return 0;
5757
5758 nla_put_failure:
5759         return -ENOBUFS;
5760 }
5761
5762
5763 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
5764                                    const u8 *addr, int cmd, u16 reason_code,
5765                                    int local_state_change)
5766 {
5767         int ret = -1;
5768         struct nl_msg *msg;
5769
5770         msg = nlmsg_alloc();
5771         if (!msg)
5772                 return -1;
5773
5774         nl80211_cmd(drv, msg, 0, cmd);
5775
5776         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5777         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
5778         if (addr)
5779                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5780         if (local_state_change)
5781                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
5782
5783         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5784         msg = NULL;
5785         if (ret) {
5786                 wpa_dbg(drv->ctx, MSG_DEBUG,
5787                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
5788                         reason_code, ret, strerror(-ret));
5789                 goto nla_put_failure;
5790         }
5791         ret = 0;
5792
5793 nla_put_failure:
5794         nlmsg_free(msg);
5795         return ret;
5796 }
5797
5798
5799 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
5800                                          int reason_code)
5801 {
5802         int ret;
5803
5804         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
5805         nl80211_mark_disconnected(drv);
5806         /* Disconnect command doesn't need BSSID - it uses cached value */
5807         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
5808                                       reason_code, 0);
5809         /*
5810          * For locally generated disconnect, supplicant already generates a
5811          * DEAUTH event, so ignore the event from NL80211.
5812          */
5813         drv->ignore_next_local_disconnect = ret == 0;
5814
5815         return ret;
5816 }
5817
5818
5819 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
5820                                              const u8 *addr, int reason_code)
5821 {
5822         struct wpa_driver_nl80211_data *drv = bss->drv;
5823         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
5824                 return wpa_driver_nl80211_disconnect(drv, reason_code);
5825         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
5826                    __func__, MAC2STR(addr), reason_code);
5827         nl80211_mark_disconnected(drv);
5828         if (drv->nlmode == NL80211_IFTYPE_ADHOC)
5829                 return nl80211_leave_ibss(drv);
5830         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
5831                                        reason_code, 0);
5832 }
5833
5834
5835 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
5836                                      struct wpa_driver_auth_params *params)
5837 {
5838         int i;
5839
5840         drv->auth_freq = params->freq;
5841         drv->auth_alg = params->auth_alg;
5842         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
5843         drv->auth_local_state_change = params->local_state_change;
5844         drv->auth_p2p = params->p2p;
5845
5846         if (params->bssid)
5847                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
5848         else
5849                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
5850
5851         if (params->ssid) {
5852                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
5853                 drv->auth_ssid_len = params->ssid_len;
5854         } else
5855                 drv->auth_ssid_len = 0;
5856
5857
5858         os_free(drv->auth_ie);
5859         drv->auth_ie = NULL;
5860         drv->auth_ie_len = 0;
5861         if (params->ie) {
5862                 drv->auth_ie = os_malloc(params->ie_len);
5863                 if (drv->auth_ie) {
5864                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
5865                         drv->auth_ie_len = params->ie_len;
5866                 }
5867         }
5868
5869         for (i = 0; i < 4; i++) {
5870                 if (params->wep_key[i] && params->wep_key_len[i] &&
5871                     params->wep_key_len[i] <= 16) {
5872                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
5873                                   params->wep_key_len[i]);
5874                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
5875                 } else
5876                         drv->auth_wep_key_len[i] = 0;
5877         }
5878 }
5879
5880
5881 static int wpa_driver_nl80211_authenticate(
5882         struct i802_bss *bss, struct wpa_driver_auth_params *params)
5883 {
5884         struct wpa_driver_nl80211_data *drv = bss->drv;
5885         int ret = -1, i;
5886         struct nl_msg *msg;
5887         enum nl80211_auth_type type;
5888         enum nl80211_iftype nlmode;
5889         int count = 0;
5890         int is_retry;
5891
5892         is_retry = drv->retry_auth;
5893         drv->retry_auth = 0;
5894
5895         nl80211_mark_disconnected(drv);
5896         os_memset(drv->auth_bssid, 0, ETH_ALEN);
5897         if (params->bssid)
5898                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
5899         else
5900                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
5901         /* FIX: IBSS mode */
5902         nlmode = params->p2p ?
5903                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5904         if (drv->nlmode != nlmode &&
5905             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
5906                 return -1;
5907
5908 retry:
5909         msg = nlmsg_alloc();
5910         if (!msg)
5911                 return -1;
5912
5913         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
5914                    drv->ifindex);
5915
5916         nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
5917
5918         for (i = 0; i < 4; i++) {
5919                 if (!params->wep_key[i])
5920                         continue;
5921                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
5922                                            NULL, i,
5923                                            i == params->wep_tx_keyidx, NULL, 0,
5924                                            params->wep_key[i],
5925                                            params->wep_key_len[i]);
5926                 if (params->wep_tx_keyidx != i)
5927                         continue;
5928                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
5929                                params->wep_key[i], params->wep_key_len[i])) {
5930                         nlmsg_free(msg);
5931                         return -1;
5932                 }
5933         }
5934
5935         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5936         if (params->bssid) {
5937                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
5938                            MAC2STR(params->bssid));
5939                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5940         }
5941         if (params->freq) {
5942                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
5943                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5944         }
5945         if (params->ssid) {
5946                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5947                                   params->ssid, params->ssid_len);
5948                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5949                         params->ssid);
5950         }
5951         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
5952         if (params->ie)
5953                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
5954         if (params->sae_data) {
5955                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
5956                             params->sae_data_len);
5957                 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
5958                         params->sae_data);
5959         }
5960         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5961                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5962         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5963                 type = NL80211_AUTHTYPE_SHARED_KEY;
5964         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5965                 type = NL80211_AUTHTYPE_NETWORK_EAP;
5966         else if (params->auth_alg & WPA_AUTH_ALG_FT)
5967                 type = NL80211_AUTHTYPE_FT;
5968         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
5969                 type = NL80211_AUTHTYPE_SAE;
5970         else
5971                 goto nla_put_failure;
5972         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5973         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5974         if (params->local_state_change) {
5975                 wpa_printf(MSG_DEBUG, "  * Local state change only");
5976                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
5977         }
5978
5979         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5980         msg = NULL;
5981         if (ret) {
5982                 wpa_dbg(drv->ctx, MSG_DEBUG,
5983                         "nl80211: MLME command failed (auth): ret=%d (%s)",
5984                         ret, strerror(-ret));
5985                 count++;
5986                 if (ret == -EALREADY && count == 1 && params->bssid &&
5987                     !params->local_state_change) {
5988                         /*
5989                          * mac80211 does not currently accept new
5990                          * authentication if we are already authenticated. As a
5991                          * workaround, force deauthentication and try again.
5992                          */
5993                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
5994                                    "after forced deauthentication");
5995                         wpa_driver_nl80211_deauthenticate(
5996                                 bss, params->bssid,
5997                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
5998                         nlmsg_free(msg);
5999                         goto retry;
6000                 }
6001
6002                 if (ret == -ENOENT && params->freq && !is_retry) {
6003                         /*
6004                          * cfg80211 has likely expired the BSS entry even
6005                          * though it was previously available in our internal
6006                          * BSS table. To recover quickly, start a single
6007                          * channel scan on the specified channel.
6008                          */
6009                         struct wpa_driver_scan_params scan;
6010                         int freqs[2];
6011
6012                         os_memset(&scan, 0, sizeof(scan));
6013                         scan.num_ssids = 1;
6014                         if (params->ssid) {
6015                                 scan.ssids[0].ssid = params->ssid;
6016                                 scan.ssids[0].ssid_len = params->ssid_len;
6017                         }
6018                         freqs[0] = params->freq;
6019                         freqs[1] = 0;
6020                         scan.freqs = freqs;
6021                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
6022                                    "channel scan to refresh cfg80211 BSS "
6023                                    "entry");
6024                         ret = wpa_driver_nl80211_scan(bss, &scan);
6025                         if (ret == 0) {
6026                                 nl80211_copy_auth_params(drv, params);
6027                                 drv->scan_for_auth = 1;
6028                         }
6029                 } else if (is_retry) {
6030                         /*
6031                          * Need to indicate this with an event since the return
6032                          * value from the retry is not delivered to core code.
6033                          */
6034                         union wpa_event_data event;
6035                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
6036                                    "failed");
6037                         os_memset(&event, 0, sizeof(event));
6038                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
6039                                   ETH_ALEN);
6040                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
6041                                              &event);
6042                 }
6043
6044                 goto nla_put_failure;
6045         }
6046         ret = 0;
6047         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
6048                    "successfully");
6049
6050 nla_put_failure:
6051         nlmsg_free(msg);
6052         return ret;
6053 }
6054
6055
6056 static int wpa_driver_nl80211_authenticate_retry(
6057         struct wpa_driver_nl80211_data *drv)
6058 {
6059         struct wpa_driver_auth_params params;
6060         struct i802_bss *bss = drv->first_bss;
6061         int i;
6062
6063         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
6064
6065         os_memset(&params, 0, sizeof(params));
6066         params.freq = drv->auth_freq;
6067         params.auth_alg = drv->auth_alg;
6068         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
6069         params.local_state_change = drv->auth_local_state_change;
6070         params.p2p = drv->auth_p2p;
6071
6072         if (!is_zero_ether_addr(drv->auth_bssid_))
6073                 params.bssid = drv->auth_bssid_;
6074
6075         if (drv->auth_ssid_len) {
6076                 params.ssid = drv->auth_ssid;
6077                 params.ssid_len = drv->auth_ssid_len;
6078         }
6079
6080         params.ie = drv->auth_ie;
6081         params.ie_len = drv->auth_ie_len;
6082
6083         for (i = 0; i < 4; i++) {
6084                 if (drv->auth_wep_key_len[i]) {
6085                         params.wep_key[i] = drv->auth_wep_key[i];
6086                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
6087                 }
6088         }
6089
6090         drv->retry_auth = 1;
6091         return wpa_driver_nl80211_authenticate(bss, &params);
6092 }
6093
6094
6095 struct phy_info_arg {
6096         u16 *num_modes;
6097         struct hostapd_hw_modes *modes;
6098         int last_mode, last_chan_idx;
6099 };
6100
6101 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
6102                              struct nlattr *ampdu_factor,
6103                              struct nlattr *ampdu_density,
6104                              struct nlattr *mcs_set)
6105 {
6106         if (capa)
6107                 mode->ht_capab = nla_get_u16(capa);
6108
6109         if (ampdu_factor)
6110                 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
6111
6112         if (ampdu_density)
6113                 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
6114
6115         if (mcs_set && nla_len(mcs_set) >= 16) {
6116                 u8 *mcs;
6117                 mcs = nla_data(mcs_set);
6118                 os_memcpy(mode->mcs_set, mcs, 16);
6119         }
6120 }
6121
6122
6123 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
6124                               struct nlattr *capa,
6125                               struct nlattr *mcs_set)
6126 {
6127         if (capa)
6128                 mode->vht_capab = nla_get_u32(capa);
6129
6130         if (mcs_set && nla_len(mcs_set) >= 8) {
6131                 u8 *mcs;
6132                 mcs = nla_data(mcs_set);
6133                 os_memcpy(mode->vht_mcs_set, mcs, 8);
6134         }
6135 }
6136
6137
6138 static void phy_info_freq(struct hostapd_hw_modes *mode,
6139                           struct hostapd_channel_data *chan,
6140                           struct nlattr *tb_freq[])
6141 {
6142         u8 channel;
6143         chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
6144         chan->flag = 0;
6145         if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
6146                 chan->chan = channel;
6147
6148         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
6149                 chan->flag |= HOSTAPD_CHAN_DISABLED;
6150         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
6151                 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN | HOSTAPD_CHAN_NO_IBSS;
6152         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
6153                 chan->flag |= HOSTAPD_CHAN_RADAR;
6154
6155         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
6156                 enum nl80211_dfs_state state =
6157                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
6158
6159                 switch (state) {
6160                 case NL80211_DFS_USABLE:
6161                         chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
6162                         break;
6163                 case NL80211_DFS_AVAILABLE:
6164                         chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
6165                         break;
6166                 case NL80211_DFS_UNAVAILABLE:
6167                         chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
6168                         break;
6169                 }
6170         }
6171 }
6172
6173
6174 static int phy_info_freqs(struct phy_info_arg *phy_info,
6175                           struct hostapd_hw_modes *mode, struct nlattr *tb)
6176 {
6177         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
6178                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
6179                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
6180                 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
6181                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
6182                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
6183                 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
6184         };
6185         int new_channels = 0;
6186         struct hostapd_channel_data *channel;
6187         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
6188         struct nlattr *nl_freq;
6189         int rem_freq, idx;
6190
6191         if (tb == NULL)
6192                 return NL_OK;
6193
6194         nla_for_each_nested(nl_freq, tb, rem_freq) {
6195                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
6196                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
6197                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
6198                         continue;
6199                 new_channels++;
6200         }
6201
6202         channel = os_realloc_array(mode->channels,
6203                                    mode->num_channels + new_channels,
6204                                    sizeof(struct hostapd_channel_data));
6205         if (!channel)
6206                 return NL_SKIP;
6207
6208         mode->channels = channel;
6209         mode->num_channels += new_channels;
6210
6211         idx = phy_info->last_chan_idx;
6212
6213         nla_for_each_nested(nl_freq, tb, rem_freq) {
6214                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
6215                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
6216                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
6217                         continue;
6218                 phy_info_freq(mode, &mode->channels[idx], tb_freq);
6219                 idx++;
6220         }
6221         phy_info->last_chan_idx = idx;
6222
6223         return NL_OK;
6224 }
6225
6226
6227 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
6228 {
6229         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
6230                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
6231                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
6232                 { .type = NLA_FLAG },
6233         };
6234         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
6235         struct nlattr *nl_rate;
6236         int rem_rate, idx;
6237
6238         if (tb == NULL)
6239                 return NL_OK;
6240
6241         nla_for_each_nested(nl_rate, tb, rem_rate) {
6242                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
6243                           nla_data(nl_rate), nla_len(nl_rate),
6244                           rate_policy);
6245                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
6246                         continue;
6247                 mode->num_rates++;
6248         }
6249
6250         mode->rates = os_calloc(mode->num_rates, sizeof(int));
6251         if (!mode->rates)
6252                 return NL_SKIP;
6253
6254         idx = 0;
6255
6256         nla_for_each_nested(nl_rate, tb, rem_rate) {
6257                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
6258                           nla_data(nl_rate), nla_len(nl_rate),
6259                           rate_policy);
6260                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
6261                         continue;
6262                 mode->rates[idx] = nla_get_u32(
6263                         tb_rate[NL80211_BITRATE_ATTR_RATE]);
6264                 idx++;
6265         }
6266
6267         return NL_OK;
6268 }
6269
6270
6271 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
6272 {
6273         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
6274         struct hostapd_hw_modes *mode;
6275         int ret;
6276
6277         if (phy_info->last_mode != nl_band->nla_type) {
6278                 mode = os_realloc_array(phy_info->modes,
6279                                         *phy_info->num_modes + 1,
6280                                         sizeof(*mode));
6281                 if (!mode)
6282                         return NL_SKIP;
6283                 phy_info->modes = mode;
6284
6285                 mode = &phy_info->modes[*(phy_info->num_modes)];
6286                 os_memset(mode, 0, sizeof(*mode));
6287                 mode->mode = NUM_HOSTAPD_MODES;
6288                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
6289                         HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
6290
6291                 /*
6292                  * Unsupported VHT MCS stream is defined as value 3, so the VHT
6293                  * MCS RX/TX map must be initialized with 0xffff to mark all 8
6294                  * possible streams as unsupported. This will be overridden if
6295                  * driver advertises VHT support.
6296                  */
6297                 mode->vht_mcs_set[0] = 0xff;
6298                 mode->vht_mcs_set[1] = 0xff;
6299                 mode->vht_mcs_set[4] = 0xff;
6300                 mode->vht_mcs_set[5] = 0xff;
6301
6302                 *(phy_info->num_modes) += 1;
6303                 phy_info->last_mode = nl_band->nla_type;
6304                 phy_info->last_chan_idx = 0;
6305         } else
6306                 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
6307
6308         nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
6309                   nla_len(nl_band), NULL);
6310
6311         phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
6312                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
6313                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
6314                          tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
6315         phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
6316                           tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
6317         ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
6318         if (ret != NL_OK)
6319                 return ret;
6320         ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
6321         if (ret != NL_OK)
6322                 return ret;
6323
6324         return NL_OK;
6325 }
6326
6327
6328 static int phy_info_handler(struct nl_msg *msg, void *arg)
6329 {
6330         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
6331         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6332         struct phy_info_arg *phy_info = arg;
6333         struct nlattr *nl_band;
6334         int rem_band;
6335
6336         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6337                   genlmsg_attrlen(gnlh, 0), NULL);
6338
6339         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
6340                 return NL_SKIP;
6341
6342         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
6343         {
6344                 int res = phy_info_band(phy_info, nl_band);
6345                 if (res != NL_OK)
6346                         return res;
6347         }
6348
6349         return NL_SKIP;
6350 }
6351
6352
6353 static struct hostapd_hw_modes *
6354 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
6355                                      u16 *num_modes)
6356 {
6357         u16 m;
6358         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
6359         int i, mode11g_idx = -1;
6360
6361         /* heuristic to set up modes */
6362         for (m = 0; m < *num_modes; m++) {
6363                 if (!modes[m].num_channels)
6364                         continue;
6365                 if (modes[m].channels[0].freq < 4000) {
6366                         modes[m].mode = HOSTAPD_MODE_IEEE80211B;
6367                         for (i = 0; i < modes[m].num_rates; i++) {
6368                                 if (modes[m].rates[i] > 200) {
6369                                         modes[m].mode = HOSTAPD_MODE_IEEE80211G;
6370                                         break;
6371                                 }
6372                         }
6373                 } else if (modes[m].channels[0].freq > 50000)
6374                         modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
6375                 else
6376                         modes[m].mode = HOSTAPD_MODE_IEEE80211A;
6377         }
6378
6379         /* If only 802.11g mode is included, use it to construct matching
6380          * 802.11b mode data. */
6381
6382         for (m = 0; m < *num_modes; m++) {
6383                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
6384                         return modes; /* 802.11b already included */
6385                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
6386                         mode11g_idx = m;
6387         }
6388
6389         if (mode11g_idx < 0)
6390                 return modes; /* 2.4 GHz band not supported at all */
6391
6392         nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
6393         if (nmodes == NULL)
6394                 return modes; /* Could not add 802.11b mode */
6395
6396         mode = &nmodes[*num_modes];
6397         os_memset(mode, 0, sizeof(*mode));
6398         (*num_modes)++;
6399         modes = nmodes;
6400
6401         mode->mode = HOSTAPD_MODE_IEEE80211B;
6402
6403         mode11g = &modes[mode11g_idx];
6404         mode->num_channels = mode11g->num_channels;
6405         mode->channels = os_malloc(mode11g->num_channels *
6406                                    sizeof(struct hostapd_channel_data));
6407         if (mode->channels == NULL) {
6408                 (*num_modes)--;
6409                 return modes; /* Could not add 802.11b mode */
6410         }
6411         os_memcpy(mode->channels, mode11g->channels,
6412                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
6413
6414         mode->num_rates = 0;
6415         mode->rates = os_malloc(4 * sizeof(int));
6416         if (mode->rates == NULL) {
6417                 os_free(mode->channels);
6418                 (*num_modes)--;
6419                 return modes; /* Could not add 802.11b mode */
6420         }
6421
6422         for (i = 0; i < mode11g->num_rates; i++) {
6423                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
6424                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
6425                         continue;
6426                 mode->rates[mode->num_rates] = mode11g->rates[i];
6427                 mode->num_rates++;
6428                 if (mode->num_rates == 4)
6429                         break;
6430         }
6431
6432         if (mode->num_rates == 0) {
6433                 os_free(mode->channels);
6434                 os_free(mode->rates);
6435                 (*num_modes)--;
6436                 return modes; /* No 802.11b rates */
6437         }
6438
6439         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
6440                    "information");
6441
6442         return modes;
6443 }
6444
6445
6446 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
6447                                   int end)
6448 {
6449         int c;
6450
6451         for (c = 0; c < mode->num_channels; c++) {
6452                 struct hostapd_channel_data *chan = &mode->channels[c];
6453                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
6454                         chan->flag |= HOSTAPD_CHAN_HT40;
6455         }
6456 }
6457
6458
6459 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
6460                                       int end)
6461 {
6462         int c;
6463
6464         for (c = 0; c < mode->num_channels; c++) {
6465                 struct hostapd_channel_data *chan = &mode->channels[c];
6466                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
6467                         continue;
6468                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
6469                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
6470                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
6471                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
6472         }
6473 }
6474
6475
6476 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
6477                                       struct phy_info_arg *results)
6478 {
6479         u16 m;
6480
6481         for (m = 0; m < *results->num_modes; m++) {
6482                 int c;
6483                 struct hostapd_hw_modes *mode = &results->modes[m];
6484
6485                 for (c = 0; c < mode->num_channels; c++) {
6486                         struct hostapd_channel_data *chan = &mode->channels[c];
6487                         if ((u32) chan->freq - 10 >= start &&
6488                             (u32) chan->freq + 10 <= end)
6489                                 chan->max_tx_power = max_eirp;
6490                 }
6491         }
6492 }
6493
6494
6495 static void nl80211_reg_rule_ht40(u32 start, u32 end,
6496                                   struct phy_info_arg *results)
6497 {
6498         u16 m;
6499
6500         for (m = 0; m < *results->num_modes; m++) {
6501                 if (!(results->modes[m].ht_capab &
6502                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
6503                         continue;
6504                 nl80211_set_ht40_mode(&results->modes[m], start, end);
6505         }
6506 }
6507
6508
6509 static void nl80211_reg_rule_sec(struct nlattr *tb[],
6510                                  struct phy_info_arg *results)
6511 {
6512         u32 start, end, max_bw;
6513         u16 m;
6514
6515         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
6516             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
6517             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
6518                 return;
6519
6520         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
6521         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
6522         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
6523
6524         if (max_bw < 20)
6525                 return;
6526
6527         for (m = 0; m < *results->num_modes; m++) {
6528                 if (!(results->modes[m].ht_capab &
6529                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
6530                         continue;
6531                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
6532         }
6533 }
6534
6535
6536 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
6537                                  int end)
6538 {
6539         int c;
6540
6541         for (c = 0; c < mode->num_channels; c++) {
6542                 struct hostapd_channel_data *chan = &mode->channels[c];
6543                 if (chan->freq - 10 >= start && chan->freq + 70 <= end)
6544                         chan->flag |= HOSTAPD_CHAN_VHT_10_70;
6545
6546                 if (chan->freq - 30 >= start && chan->freq + 50 <= end)
6547                         chan->flag |= HOSTAPD_CHAN_VHT_30_50;
6548
6549                 if (chan->freq - 50 >= start && chan->freq + 30 <= end)
6550                         chan->flag |= HOSTAPD_CHAN_VHT_50_30;
6551
6552                 if (chan->freq - 70 >= start && chan->freq + 10 <= end)
6553                         chan->flag |= HOSTAPD_CHAN_VHT_70_10;
6554         }
6555 }
6556
6557
6558 static void nl80211_reg_rule_vht(struct nlattr *tb[],
6559                                  struct phy_info_arg *results)
6560 {
6561         u32 start, end, max_bw;
6562         u16 m;
6563
6564         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
6565             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
6566             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
6567                 return;
6568
6569         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
6570         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
6571         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
6572
6573         if (max_bw < 80)
6574                 return;
6575
6576         for (m = 0; m < *results->num_modes; m++) {
6577                 if (!(results->modes[m].ht_capab &
6578                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
6579                         continue;
6580                 /* TODO: use a real VHT support indication */
6581                 if (!results->modes[m].vht_capab)
6582                         continue;
6583
6584                 nl80211_set_vht_mode(&results->modes[m], start, end);
6585         }
6586 }
6587
6588
6589 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
6590 {
6591         switch (region) {
6592         case NL80211_DFS_UNSET:
6593                 return "DFS-UNSET";
6594         case NL80211_DFS_FCC:
6595                 return "DFS-FCC";
6596         case NL80211_DFS_ETSI:
6597                 return "DFS-ETSI";
6598         case NL80211_DFS_JP:
6599                 return "DFS-JP";
6600         default:
6601                 return "DFS-invalid";
6602         }
6603 }
6604
6605
6606 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
6607 {
6608         struct phy_info_arg *results = arg;
6609         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
6610         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6611         struct nlattr *nl_rule;
6612         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
6613         int rem_rule;
6614         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
6615                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6616                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6617                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6618                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6619                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6620                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6621         };
6622
6623         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6624                   genlmsg_attrlen(gnlh, 0), NULL);
6625         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
6626             !tb_msg[NL80211_ATTR_REG_RULES]) {
6627                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
6628                            "available");
6629                 return NL_SKIP;
6630         }
6631
6632         if (tb_msg[NL80211_ATTR_DFS_REGION]) {
6633                 enum nl80211_dfs_regions dfs_domain;
6634                 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
6635                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
6636                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
6637                            dfs_domain_name(dfs_domain));
6638         } else {
6639                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
6640                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
6641         }
6642
6643         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
6644         {
6645                 u32 start, end, max_eirp = 0, max_bw = 0;
6646                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
6647                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
6648                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
6649                     tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
6650                         continue;
6651                 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
6652                 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
6653                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6654                         max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
6655                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6656                         max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
6657
6658                 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm",
6659                            start, end, max_bw, max_eirp);
6660                 if (max_bw >= 40)
6661                         nl80211_reg_rule_ht40(start, end, results);
6662                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6663                         nl80211_reg_rule_max_eirp(start, end, max_eirp,
6664                                                   results);
6665         }
6666
6667         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
6668         {
6669                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
6670                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
6671                 nl80211_reg_rule_sec(tb_rule, results);
6672         }
6673
6674         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
6675         {
6676                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
6677                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
6678                 nl80211_reg_rule_vht(tb_rule, results);
6679         }
6680
6681         return NL_SKIP;
6682 }
6683
6684
6685 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
6686                                         struct phy_info_arg *results)
6687 {
6688         struct nl_msg *msg;
6689
6690         msg = nlmsg_alloc();
6691         if (!msg)
6692                 return -ENOMEM;
6693
6694         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
6695         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
6696 }
6697
6698
6699 static struct hostapd_hw_modes *
6700 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
6701 {
6702         u32 feat;
6703         struct i802_bss *bss = priv;
6704         struct wpa_driver_nl80211_data *drv = bss->drv;
6705         struct nl_msg *msg;
6706         struct phy_info_arg result = {
6707                 .num_modes = num_modes,
6708                 .modes = NULL,
6709                 .last_mode = -1,
6710         };
6711
6712         *num_modes = 0;
6713         *flags = 0;
6714
6715         msg = nlmsg_alloc();
6716         if (!msg)
6717                 return NULL;
6718
6719         feat = get_nl80211_protocol_features(drv);
6720         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
6721                 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY);
6722         else
6723                 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
6724
6725         NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
6726         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6727
6728         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
6729                 nl80211_set_regulatory_flags(drv, &result);
6730                 return wpa_driver_nl80211_postprocess_modes(result.modes,
6731                                                             num_modes);
6732         }
6733         msg = NULL;
6734  nla_put_failure:
6735         nlmsg_free(msg);
6736         return NULL;
6737 }
6738
6739
6740 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv,
6741                                         const void *data, size_t len,
6742                                         int encrypt, int noack)
6743 {
6744         __u8 rtap_hdr[] = {
6745                 0x00, 0x00, /* radiotap version */
6746                 0x0e, 0x00, /* radiotap length */
6747                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
6748                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
6749                 0x00,       /* padding */
6750                 0x00, 0x00, /* RX and TX flags to indicate that */
6751                 0x00, 0x00, /* this is the injected frame directly */
6752         };
6753         struct iovec iov[2] = {
6754                 {
6755                         .iov_base = &rtap_hdr,
6756                         .iov_len = sizeof(rtap_hdr),
6757                 },
6758                 {
6759                         .iov_base = (void *) data,
6760                         .iov_len = len,
6761                 }
6762         };
6763         struct msghdr msg = {
6764                 .msg_name = NULL,
6765                 .msg_namelen = 0,
6766                 .msg_iov = iov,
6767                 .msg_iovlen = 2,
6768                 .msg_control = NULL,
6769                 .msg_controllen = 0,
6770                 .msg_flags = 0,
6771         };
6772         int res;
6773         u16 txflags = 0;
6774
6775         if (encrypt)
6776                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
6777
6778         if (drv->monitor_sock < 0) {
6779                 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
6780                            "for %s", __func__);
6781                 return -1;
6782         }
6783
6784         if (noack)
6785                 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK;
6786         WPA_PUT_LE16(&rtap_hdr[12], txflags);
6787
6788         res = sendmsg(drv->monitor_sock, &msg, 0);
6789         if (res < 0) {
6790                 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
6791                 return -1;
6792         }
6793         return 0;
6794 }
6795
6796
6797 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
6798                                          const void *data, size_t len,
6799                                          int encrypt, int noack,
6800                                          unsigned int freq, int no_cck,
6801                                          int offchanok, unsigned int wait_time)
6802 {
6803         struct wpa_driver_nl80211_data *drv = bss->drv;
6804         u64 cookie;
6805         int res;
6806
6807         if (freq == 0) {
6808                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
6809                            bss->freq);
6810                 freq = bss->freq;
6811         }
6812
6813         if (drv->use_monitor) {
6814                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_mntr",
6815                            freq, bss->freq);
6816                 return wpa_driver_nl80211_send_mntr(drv, data, len,
6817                                                     encrypt, noack);
6818         }
6819
6820         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
6821         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
6822                                      &cookie, no_cck, noack, offchanok);
6823         if (res == 0 && !noack) {
6824                 const struct ieee80211_mgmt *mgmt;
6825                 u16 fc;
6826
6827                 mgmt = (const struct ieee80211_mgmt *) data;
6828                 fc = le_to_host16(mgmt->frame_control);
6829                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
6830                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
6831                         wpa_printf(MSG_MSGDUMP,
6832                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
6833                                    (long long unsigned int)
6834                                    drv->send_action_cookie,
6835                                    (long long unsigned int) cookie);
6836                         drv->send_action_cookie = cookie;
6837                 }
6838         }
6839
6840         return res;
6841 }
6842
6843
6844 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
6845                                         size_t data_len, int noack,
6846                                         unsigned int freq, int no_cck,
6847                                         int offchanok,
6848                                         unsigned int wait_time)
6849 {
6850         struct wpa_driver_nl80211_data *drv = bss->drv;
6851         struct ieee80211_mgmt *mgmt;
6852         int encrypt = 1;
6853         u16 fc;
6854
6855         mgmt = (struct ieee80211_mgmt *) data;
6856         fc = le_to_host16(mgmt->frame_control);
6857         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x nlmode=%d",
6858                    noack, freq, no_cck, offchanok, wait_time, fc, drv->nlmode);
6859
6860         if ((is_sta_interface(drv->nlmode) ||
6861              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
6862             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
6863             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
6864                 /*
6865                  * The use of last_mgmt_freq is a bit of a hack,
6866                  * but it works due to the single-threaded nature
6867                  * of wpa_supplicant.
6868                  */
6869                 if (freq == 0) {
6870                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
6871                                    drv->last_mgmt_freq);
6872                         freq = drv->last_mgmt_freq;
6873                 }
6874                 return nl80211_send_frame_cmd(bss, freq, 0,
6875                                               data, data_len, NULL, 1, noack,
6876                                               1);
6877         }
6878
6879         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
6880                 if (freq == 0) {
6881                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
6882                                    bss->freq);
6883                         freq = bss->freq;
6884                 }
6885                 return nl80211_send_frame_cmd(bss, freq,
6886                                               (int) freq == bss->freq ? 0 :
6887                                               wait_time,
6888                                               data, data_len,
6889                                               &drv->send_action_cookie,
6890                                               no_cck, noack, offchanok);
6891         }
6892
6893         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
6894             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
6895                 /*
6896                  * Only one of the authentication frame types is encrypted.
6897                  * In order for static WEP encryption to work properly (i.e.,
6898                  * to not encrypt the frame), we need to tell mac80211 about
6899                  * the frames that must not be encrypted.
6900                  */
6901                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
6902                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
6903                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
6904                         encrypt = 0;
6905         }
6906
6907         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
6908         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
6909                                              noack, freq, no_cck, offchanok,
6910                                              wait_time);
6911 }
6912
6913
6914 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
6915                            int slot, int ht_opmode, int ap_isolate,
6916                            int *basic_rates)
6917 {
6918         struct wpa_driver_nl80211_data *drv = bss->drv;
6919         struct nl_msg *msg;
6920
6921         msg = nlmsg_alloc();
6922         if (!msg)
6923                 return -ENOMEM;
6924
6925         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
6926
6927         if (cts >= 0)
6928                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
6929         if (preamble >= 0)
6930                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
6931         if (slot >= 0)
6932                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
6933         if (ht_opmode >= 0)
6934                 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
6935         if (ap_isolate >= 0)
6936                 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
6937
6938         if (basic_rates) {
6939                 u8 rates[NL80211_MAX_SUPP_RATES];
6940                 u8 rates_len = 0;
6941                 int i;
6942
6943                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
6944                      i++)
6945                         rates[rates_len++] = basic_rates[i] / 5;
6946
6947                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
6948         }
6949
6950         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6951
6952         return send_and_recv_msgs(drv, msg, NULL, NULL);
6953  nla_put_failure:
6954         nlmsg_free(msg);
6955         return -ENOBUFS;
6956 }
6957
6958
6959 static int wpa_driver_nl80211_set_acl(void *priv,
6960                                       struct hostapd_acl_params *params)
6961 {
6962         struct i802_bss *bss = priv;
6963         struct wpa_driver_nl80211_data *drv = bss->drv;
6964         struct nl_msg *msg;
6965         struct nlattr *acl;
6966         unsigned int i;
6967         int ret = 0;
6968
6969         if (!(drv->capa.max_acl_mac_addrs))
6970                 return -ENOTSUP;
6971
6972         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
6973                 return -ENOTSUP;
6974
6975         msg = nlmsg_alloc();
6976         if (!msg)
6977                 return -ENOMEM;
6978
6979         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
6980                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
6981
6982         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_MAC_ACL);
6983
6984         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6985
6986         NLA_PUT_U32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
6987                     NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
6988                     NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED);
6989
6990         acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
6991         if (acl == NULL)
6992                 goto nla_put_failure;
6993
6994         for (i = 0; i < params->num_mac_acl; i++)
6995                 NLA_PUT(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr);
6996
6997         nla_nest_end(msg, acl);
6998
6999         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7000         msg = NULL;
7001         if (ret) {
7002                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
7003                            ret, strerror(-ret));
7004         }
7005
7006 nla_put_failure:
7007         nlmsg_free(msg);
7008
7009         return ret;
7010 }
7011
7012
7013 static int wpa_driver_nl80211_set_ap(void *priv,
7014                                      struct wpa_driver_ap_params *params)
7015 {
7016         struct i802_bss *bss = priv;
7017         struct wpa_driver_nl80211_data *drv = bss->drv;
7018         struct nl_msg *msg;
7019         u8 cmd = NL80211_CMD_NEW_BEACON;
7020         int ret;
7021         int beacon_set;
7022         int ifindex = if_nametoindex(bss->ifname);
7023         int num_suites;
7024         u32 suites[10], suite;
7025         u32 ver;
7026
7027         beacon_set = bss->beacon_set;
7028
7029         msg = nlmsg_alloc();
7030         if (!msg)
7031                 return -ENOMEM;
7032
7033         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
7034                    beacon_set);
7035         if (beacon_set)
7036                 cmd = NL80211_CMD_SET_BEACON;
7037
7038         nl80211_cmd(drv, msg, 0, cmd);
7039         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
7040                     params->head, params->head_len);
7041         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
7042         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
7043                     params->tail, params->tail_len);
7044         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
7045         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex);
7046         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7047         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
7048         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
7049         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
7050         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
7051         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
7052                           params->ssid, params->ssid_len);
7053         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
7054                 params->ssid);
7055         if (params->proberesp && params->proberesp_len) {
7056                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
7057                             params->proberesp, params->proberesp_len);
7058                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
7059                         params->proberesp);
7060         }
7061         switch (params->hide_ssid) {
7062         case NO_SSID_HIDING:
7063                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
7064                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
7065                             NL80211_HIDDEN_SSID_NOT_IN_USE);
7066                 break;
7067         case HIDDEN_SSID_ZERO_LEN:
7068                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
7069                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
7070                             NL80211_HIDDEN_SSID_ZERO_LEN);
7071                 break;
7072         case HIDDEN_SSID_ZERO_CONTENTS:
7073                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
7074                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
7075                             NL80211_HIDDEN_SSID_ZERO_CONTENTS);
7076                 break;
7077         }
7078         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
7079         if (params->privacy)
7080                 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
7081         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
7082         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
7083             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
7084                 /* Leave out the attribute */
7085         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
7086                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
7087                             NL80211_AUTHTYPE_SHARED_KEY);
7088         else
7089                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
7090                             NL80211_AUTHTYPE_OPEN_SYSTEM);
7091
7092         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
7093         ver = 0;
7094         if (params->wpa_version & WPA_PROTO_WPA)
7095                 ver |= NL80211_WPA_VERSION_1;
7096         if (params->wpa_version & WPA_PROTO_RSN)
7097                 ver |= NL80211_WPA_VERSION_2;
7098         if (ver)
7099                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
7100
7101         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
7102                    params->key_mgmt_suites);
7103         num_suites = 0;
7104         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
7105                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
7106         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
7107                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
7108         if (num_suites) {
7109                 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
7110                         num_suites * sizeof(u32), suites);
7111         }
7112
7113         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
7114             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
7115                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
7116
7117         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
7118                    params->pairwise_ciphers);
7119         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
7120                                                  suites, ARRAY_SIZE(suites));
7121         if (num_suites) {
7122                 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
7123                         num_suites * sizeof(u32), suites);
7124         }
7125
7126         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
7127                    params->group_cipher);
7128         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
7129         if (suite)
7130                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite);
7131
7132         if (params->beacon_ies) {
7133                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
7134                                 params->beacon_ies);
7135                 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
7136                         wpabuf_head(params->beacon_ies));
7137         }
7138         if (params->proberesp_ies) {
7139                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
7140                                 params->proberesp_ies);
7141                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
7142                         wpabuf_len(params->proberesp_ies),
7143                         wpabuf_head(params->proberesp_ies));
7144         }
7145         if (params->assocresp_ies) {
7146                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
7147                                 params->assocresp_ies);
7148                 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
7149                         wpabuf_len(params->assocresp_ies),
7150                         wpabuf_head(params->assocresp_ies));
7151         }
7152
7153         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
7154                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
7155                            params->ap_max_inactivity);
7156                 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
7157                             params->ap_max_inactivity);
7158         }
7159
7160         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7161         if (ret) {
7162                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
7163                            ret, strerror(-ret));
7164         } else {
7165                 bss->beacon_set = 1;
7166                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
7167                                 params->short_slot_time, params->ht_opmode,
7168                                 params->isolate, params->basic_rates);
7169         }
7170         return ret;
7171  nla_put_failure:
7172         nlmsg_free(msg);
7173         return -ENOBUFS;
7174 }
7175
7176
7177 static int nl80211_put_freq_params(struct nl_msg *msg,
7178                                    struct hostapd_freq_params *freq)
7179 {
7180         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
7181         if (freq->vht_enabled) {
7182                 switch (freq->bandwidth) {
7183                 case 20:
7184                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7185                                     NL80211_CHAN_WIDTH_20);
7186                         break;
7187                 case 40:
7188                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7189                                     NL80211_CHAN_WIDTH_40);
7190                         break;
7191                 case 80:
7192                         if (freq->center_freq2)
7193                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7194                                             NL80211_CHAN_WIDTH_80P80);
7195                         else
7196                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7197                                             NL80211_CHAN_WIDTH_80);
7198                         break;
7199                 case 160:
7200                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
7201                                     NL80211_CHAN_WIDTH_160);
7202                         break;
7203                 default:
7204                         return -EINVAL;
7205                 }
7206                 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1);
7207                 if (freq->center_freq2)
7208                         NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2,
7209                                     freq->center_freq2);
7210         } else if (freq->ht_enabled) {
7211                 switch (freq->sec_channel_offset) {
7212                 case -1:
7213                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
7214                                     NL80211_CHAN_HT40MINUS);
7215                         break;
7216                 case 1:
7217                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
7218                                     NL80211_CHAN_HT40PLUS);
7219                         break;
7220                 default:
7221                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
7222                                     NL80211_CHAN_HT20);
7223                         break;
7224                 }
7225         }
7226         return 0;
7227
7228 nla_put_failure:
7229         return -ENOBUFS;
7230 }
7231
7232
7233 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
7234                                        struct hostapd_freq_params *freq)
7235 {
7236         struct wpa_driver_nl80211_data *drv = bss->drv;
7237         struct nl_msg *msg;
7238         int ret;
7239
7240         wpa_printf(MSG_DEBUG,
7241                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
7242                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7243                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7244         msg = nlmsg_alloc();
7245         if (!msg)
7246                 return -1;
7247
7248         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7249
7250         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7251         if (nl80211_put_freq_params(msg, freq) < 0)
7252                 goto nla_put_failure;
7253
7254         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7255         msg = NULL;
7256         if (ret == 0) {
7257                 bss->freq = freq->freq;
7258                 return 0;
7259         }
7260         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
7261                    "%d (%s)", freq->freq, ret, strerror(-ret));
7262 nla_put_failure:
7263         nlmsg_free(msg);
7264         return -1;
7265 }
7266
7267
7268 static u32 sta_flags_nl80211(int flags)
7269 {
7270         u32 f = 0;
7271
7272         if (flags & WPA_STA_AUTHORIZED)
7273                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
7274         if (flags & WPA_STA_WMM)
7275                 f |= BIT(NL80211_STA_FLAG_WME);
7276         if (flags & WPA_STA_SHORT_PREAMBLE)
7277                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
7278         if (flags & WPA_STA_MFP)
7279                 f |= BIT(NL80211_STA_FLAG_MFP);
7280         if (flags & WPA_STA_TDLS_PEER)
7281                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
7282
7283         return f;
7284 }
7285
7286
7287 static int wpa_driver_nl80211_sta_add(void *priv,
7288                                       struct hostapd_sta_add_params *params)
7289 {
7290         struct i802_bss *bss = priv;
7291         struct wpa_driver_nl80211_data *drv = bss->drv;
7292         struct nl_msg *msg;
7293         struct nl80211_sta_flag_update upd;
7294         int ret = -ENOBUFS;
7295
7296         if ((params->flags & WPA_STA_TDLS_PEER) &&
7297             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7298                 return -EOPNOTSUPP;
7299
7300         msg = nlmsg_alloc();
7301         if (!msg)
7302                 return -ENOMEM;
7303
7304         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
7305                    params->set ? "Set" : "Add", MAC2STR(params->addr));
7306         nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
7307                     NL80211_CMD_NEW_STATION);
7308
7309         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7310         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
7311         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
7312                 params->supp_rates);
7313         wpa_hexdump(MSG_DEBUG, "  * supported rates", params->supp_rates,
7314                     params->supp_rates_len);
7315         if (!params->set) {
7316                 if (params->aid) {
7317                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
7318                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
7319                 } else {
7320                         /*
7321                          * cfg80211 validates that AID is non-zero, so we have
7322                          * to make this a non-zero value for the TDLS case where
7323                          * a dummy STA entry is used for now.
7324                          */
7325                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
7326                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1);
7327                 }
7328                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
7329                            params->listen_interval);
7330                 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
7331                             params->listen_interval);
7332         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
7333                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
7334                 NLA_PUT_U16(msg, NL80211_ATTR_PEER_AID, params->aid);
7335         }
7336         if (params->ht_capabilities) {
7337                 wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
7338                             (u8 *) params->ht_capabilities,
7339                             sizeof(*params->ht_capabilities));
7340                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
7341                         sizeof(*params->ht_capabilities),
7342                         params->ht_capabilities);
7343         }
7344
7345         if (params->vht_capabilities) {
7346                 wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
7347                             (u8 *) params->vht_capabilities,
7348                             sizeof(*params->vht_capabilities));
7349                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY,
7350                         sizeof(*params->vht_capabilities),
7351                         params->vht_capabilities);
7352         }
7353
7354         wpa_printf(MSG_DEBUG, "  * capability=0x%x", params->capability);
7355         NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability);
7356
7357         if (params->ext_capab) {
7358                 wpa_hexdump(MSG_DEBUG, "  * ext_capab",
7359                             params->ext_capab, params->ext_capab_len);
7360                 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
7361                         params->ext_capab_len, params->ext_capab);
7362         }
7363
7364         if (params->supp_channels) {
7365                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
7366                             params->supp_channels, params->supp_channels_len);
7367                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
7368                         params->supp_channels_len, params->supp_channels);
7369         }
7370
7371         if (params->supp_oper_classes) {
7372                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
7373                             params->supp_oper_classes,
7374                             params->supp_oper_classes_len);
7375                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
7376                         params->supp_oper_classes_len,
7377                         params->supp_oper_classes);
7378         }
7379
7380         os_memset(&upd, 0, sizeof(upd));
7381         upd.mask = sta_flags_nl80211(params->flags);
7382         upd.set = upd.mask;
7383         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
7384                    upd.set, upd.mask);
7385         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
7386
7387         if (params->flags & WPA_STA_WMM) {
7388                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
7389
7390                 if (!wme)
7391                         goto nla_put_failure;
7392
7393                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
7394                 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES,
7395                                 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
7396                 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP,
7397                                 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
7398                                 WMM_QOSINFO_STA_SP_MASK);
7399                 nla_nest_end(msg, wme);
7400         }
7401
7402         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7403         msg = NULL;
7404         if (ret)
7405                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
7406                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
7407                            strerror(-ret));
7408         if (ret == -EEXIST)
7409                 ret = 0;
7410  nla_put_failure:
7411         nlmsg_free(msg);
7412         return ret;
7413 }
7414
7415
7416 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr)
7417 {
7418         struct wpa_driver_nl80211_data *drv = bss->drv;
7419         struct nl_msg *msg;
7420         int ret;
7421
7422         msg = nlmsg_alloc();
7423         if (!msg)
7424                 return -ENOMEM;
7425
7426         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
7427
7428         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7429                     if_nametoindex(bss->ifname));
7430         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7431
7432         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7433         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
7434                    " --> %d (%s)",
7435                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
7436         if (ret == -ENOENT)
7437                 return 0;
7438         return ret;
7439  nla_put_failure:
7440         nlmsg_free(msg);
7441         return -ENOBUFS;
7442 }
7443
7444
7445 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
7446                                  int ifidx)
7447 {
7448         struct nl_msg *msg;
7449
7450         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
7451
7452         /* stop listening for EAPOL on this interface */
7453         del_ifidx(drv, ifidx);
7454
7455         msg = nlmsg_alloc();
7456         if (!msg)
7457                 goto nla_put_failure;
7458
7459         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
7460         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
7461
7462         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7463                 return;
7464         msg = NULL;
7465  nla_put_failure:
7466         nlmsg_free(msg);
7467         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
7468 }
7469
7470
7471 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
7472 {
7473         switch (mode) {
7474         case NL80211_IFTYPE_ADHOC:
7475                 return "ADHOC";
7476         case NL80211_IFTYPE_STATION:
7477                 return "STATION";
7478         case NL80211_IFTYPE_AP:
7479                 return "AP";
7480         case NL80211_IFTYPE_AP_VLAN:
7481                 return "AP_VLAN";
7482         case NL80211_IFTYPE_WDS:
7483                 return "WDS";
7484         case NL80211_IFTYPE_MONITOR:
7485                 return "MONITOR";
7486         case NL80211_IFTYPE_MESH_POINT:
7487                 return "MESH_POINT";
7488         case NL80211_IFTYPE_P2P_CLIENT:
7489                 return "P2P_CLIENT";
7490         case NL80211_IFTYPE_P2P_GO:
7491                 return "P2P_GO";
7492         case NL80211_IFTYPE_P2P_DEVICE:
7493                 return "P2P_DEVICE";
7494         default:
7495                 return "unknown";
7496         }
7497 }
7498
7499
7500 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
7501                                      const char *ifname,
7502                                      enum nl80211_iftype iftype,
7503                                      const u8 *addr, int wds,
7504                                      int (*handler)(struct nl_msg *, void *),
7505                                      void *arg)
7506 {
7507         struct nl_msg *msg;
7508         int ifidx;
7509         int ret = -ENOBUFS;
7510
7511         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
7512                    iftype, nl80211_iftype_str(iftype));
7513
7514         msg = nlmsg_alloc();
7515         if (!msg)
7516                 return -1;
7517
7518         nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
7519         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
7520                 goto nla_put_failure;
7521         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
7522         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
7523
7524         if (iftype == NL80211_IFTYPE_MONITOR) {
7525                 struct nlattr *flags;
7526
7527                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
7528                 if (!flags)
7529                         goto nla_put_failure;
7530
7531                 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES);
7532
7533                 nla_nest_end(msg, flags);
7534         } else if (wds) {
7535                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
7536         }
7537
7538         ret = send_and_recv_msgs(drv, msg, handler, arg);
7539         msg = NULL;
7540         if (ret) {
7541  nla_put_failure:
7542                 nlmsg_free(msg);
7543                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
7544                            ifname, ret, strerror(-ret));
7545                 return ret;
7546         }
7547
7548         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
7549                 return 0;
7550
7551         ifidx = if_nametoindex(ifname);
7552         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
7553                    ifname, ifidx);
7554
7555         if (ifidx <= 0)
7556                 return -1;
7557
7558         /* start listening for EAPOL on this interface */
7559         add_ifidx(drv, ifidx);
7560
7561         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
7562             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
7563                 nl80211_remove_iface(drv, ifidx);
7564                 return -1;
7565         }
7566
7567         return ifidx;
7568 }
7569
7570
7571 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
7572                                 const char *ifname, enum nl80211_iftype iftype,
7573                                 const u8 *addr, int wds,
7574                                 int (*handler)(struct nl_msg *, void *),
7575                                 void *arg, int use_existing)
7576 {
7577         int ret;
7578
7579         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
7580                                         arg);
7581
7582         /* if error occurred and interface exists already */
7583         if (ret == -ENFILE && if_nametoindex(ifname)) {
7584                 if (use_existing) {
7585                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
7586                                    ifname);
7587                         return -ENFILE;
7588                 }
7589                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
7590
7591                 /* Try to remove the interface that was already there. */
7592                 nl80211_remove_iface(drv, if_nametoindex(ifname));
7593
7594                 /* Try to create the interface again */
7595                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
7596                                                 wds, handler, arg);
7597         }
7598
7599         if (ret >= 0 && is_p2p_net_interface(iftype))
7600                 nl80211_disable_11b_rates(drv, ret, 1);
7601
7602         return ret;
7603 }
7604
7605
7606 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
7607 {
7608         struct ieee80211_hdr *hdr;
7609         u16 fc;
7610         union wpa_event_data event;
7611
7612         hdr = (struct ieee80211_hdr *) buf;
7613         fc = le_to_host16(hdr->frame_control);
7614
7615         os_memset(&event, 0, sizeof(event));
7616         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
7617         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
7618         event.tx_status.dst = hdr->addr1;
7619         event.tx_status.data = buf;
7620         event.tx_status.data_len = len;
7621         event.tx_status.ack = ok;
7622         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
7623 }
7624
7625
7626 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
7627                              u8 *buf, size_t len)
7628 {
7629         struct ieee80211_hdr *hdr = (void *)buf;
7630         u16 fc;
7631         union wpa_event_data event;
7632
7633         if (len < sizeof(*hdr))
7634                 return;
7635
7636         fc = le_to_host16(hdr->frame_control);
7637
7638         os_memset(&event, 0, sizeof(event));
7639         event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
7640         event.rx_from_unknown.addr = hdr->addr2;
7641         event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
7642                 (WLAN_FC_FROMDS | WLAN_FC_TODS);
7643         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
7644 }
7645
7646
7647 static void handle_frame(struct wpa_driver_nl80211_data *drv,
7648                          u8 *buf, size_t len, int datarate, int ssi_signal)
7649 {
7650         struct ieee80211_hdr *hdr;
7651         u16 fc;
7652         union wpa_event_data event;
7653
7654         hdr = (struct ieee80211_hdr *) buf;
7655         fc = le_to_host16(hdr->frame_control);
7656
7657         switch (WLAN_FC_GET_TYPE(fc)) {
7658         case WLAN_FC_TYPE_MGMT:
7659                 os_memset(&event, 0, sizeof(event));
7660                 event.rx_mgmt.frame = buf;
7661                 event.rx_mgmt.frame_len = len;
7662                 event.rx_mgmt.datarate = datarate;
7663                 event.rx_mgmt.ssi_signal = ssi_signal;
7664                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
7665                 break;
7666         case WLAN_FC_TYPE_CTRL:
7667                 /* can only get here with PS-Poll frames */
7668                 wpa_printf(MSG_DEBUG, "CTRL");
7669                 from_unknown_sta(drv, buf, len);
7670                 break;
7671         case WLAN_FC_TYPE_DATA:
7672                 from_unknown_sta(drv, buf, len);
7673                 break;
7674         }
7675 }
7676
7677
7678 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
7679 {
7680         struct wpa_driver_nl80211_data *drv = eloop_ctx;
7681         int len;
7682         unsigned char buf[3000];
7683         struct ieee80211_radiotap_iterator iter;
7684         int ret;
7685         int datarate = 0, ssi_signal = 0;
7686         int injected = 0, failed = 0, rxflags = 0;
7687
7688         len = recv(sock, buf, sizeof(buf), 0);
7689         if (len < 0) {
7690                 wpa_printf(MSG_ERROR, "nl80211: Monitor socket recv failed: %s",
7691                            strerror(errno));
7692                 return;
7693         }
7694
7695         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
7696                 wpa_printf(MSG_INFO, "nl80211: received invalid radiotap frame");
7697                 return;
7698         }
7699
7700         while (1) {
7701                 ret = ieee80211_radiotap_iterator_next(&iter);
7702                 if (ret == -ENOENT)
7703                         break;
7704                 if (ret) {
7705                         wpa_printf(MSG_INFO, "nl80211: received invalid radiotap frame (%d)",
7706                                    ret);
7707                         return;
7708                 }
7709                 switch (iter.this_arg_index) {
7710                 case IEEE80211_RADIOTAP_FLAGS:
7711                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
7712                                 len -= 4;
7713                         break;
7714                 case IEEE80211_RADIOTAP_RX_FLAGS:
7715                         rxflags = 1;
7716                         break;
7717                 case IEEE80211_RADIOTAP_TX_FLAGS:
7718                         injected = 1;
7719                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
7720                                         IEEE80211_RADIOTAP_F_TX_FAIL;
7721                         break;
7722                 case IEEE80211_RADIOTAP_DATA_RETRIES:
7723                         break;
7724                 case IEEE80211_RADIOTAP_CHANNEL:
7725                         /* TODO: convert from freq/flags to channel number */
7726                         break;
7727                 case IEEE80211_RADIOTAP_RATE:
7728                         datarate = *iter.this_arg * 5;
7729                         break;
7730                 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL:
7731                         ssi_signal = (s8) *iter.this_arg;
7732                         break;
7733                 }
7734         }
7735
7736         if (rxflags && injected)
7737                 return;
7738
7739         if (!injected)
7740                 handle_frame(drv, buf + iter.max_length,
7741                              len - iter.max_length, datarate, ssi_signal);
7742         else
7743                 handle_tx_callback(drv->ctx, buf + iter.max_length,
7744                                    len - iter.max_length, !failed);
7745 }
7746
7747
7748 /*
7749  * we post-process the filter code later and rewrite
7750  * this to the offset to the last instruction
7751  */
7752 #define PASS    0xFF
7753 #define FAIL    0xFE
7754
7755 static struct sock_filter msock_filter_insns[] = {
7756         /*
7757          * do a little-endian load of the radiotap length field
7758          */
7759         /* load lower byte into A */
7760         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
7761         /* put it into X (== index register) */
7762         BPF_STMT(BPF_MISC| BPF_TAX, 0),
7763         /* load upper byte into A */
7764         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
7765         /* left-shift it by 8 */
7766         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
7767         /* or with X */
7768         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
7769         /* put result into X */
7770         BPF_STMT(BPF_MISC| BPF_TAX, 0),
7771
7772         /*
7773          * Allow management frames through, this also gives us those
7774          * management frames that we sent ourselves with status
7775          */
7776         /* load the lower byte of the IEEE 802.11 frame control field */
7777         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
7778         /* mask off frame type and version */
7779         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
7780         /* accept frame if it's both 0, fall through otherwise */
7781         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
7782
7783         /*
7784          * TODO: add a bit to radiotap RX flags that indicates
7785          * that the sending station is not associated, then
7786          * add a filter here that filters on our DA and that flag
7787          * to allow us to deauth frames to that bad station.
7788          *
7789          * For now allow all To DS data frames through.
7790          */
7791         /* load the IEEE 802.11 frame control field */
7792         BPF_STMT(BPF_LD  | BPF_H | BPF_IND, 0),
7793         /* mask off frame type, version and DS status */
7794         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
7795         /* accept frame if version 0, type 2 and To DS, fall through otherwise
7796          */
7797         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
7798
7799 #if 0
7800         /*
7801          * drop non-data frames
7802          */
7803         /* load the lower byte of the frame control field */
7804         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
7805         /* mask off QoS bit */
7806         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
7807         /* drop non-data frames */
7808         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
7809 #endif
7810         /* load the upper byte of the frame control field */
7811         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
7812         /* mask off toDS/fromDS */
7813         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
7814         /* accept WDS frames */
7815         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
7816
7817         /*
7818          * add header length to index
7819          */
7820         /* load the lower byte of the frame control field */
7821         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
7822         /* mask off QoS bit */
7823         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
7824         /* right shift it by 6 to give 0 or 2 */
7825         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
7826         /* add data frame header length */
7827         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
7828         /* add index, was start of 802.11 header */
7829         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
7830         /* move to index, now start of LL header */
7831         BPF_STMT(BPF_MISC | BPF_TAX, 0),
7832
7833         /*
7834          * Accept empty data frames, we use those for
7835          * polling activity.
7836          */
7837         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
7838         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
7839
7840         /*
7841          * Accept EAPOL frames
7842          */
7843         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
7844         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
7845         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
7846         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
7847
7848         /* keep these last two statements or change the code below */
7849         /* return 0 == "DROP" */
7850         BPF_STMT(BPF_RET | BPF_K, 0),
7851         /* return ~0 == "keep all" */
7852         BPF_STMT(BPF_RET | BPF_K, ~0),
7853 };
7854
7855 static struct sock_fprog msock_filter = {
7856         .len = ARRAY_SIZE(msock_filter_insns),
7857         .filter = msock_filter_insns,
7858 };
7859
7860
7861 static int add_monitor_filter(int s)
7862 {
7863         int idx;
7864
7865         /* rewrite all PASS/FAIL jump offsets */
7866         for (idx = 0; idx < msock_filter.len; idx++) {
7867                 struct sock_filter *insn = &msock_filter_insns[idx];
7868
7869                 if (BPF_CLASS(insn->code) == BPF_JMP) {
7870                         if (insn->code == (BPF_JMP|BPF_JA)) {
7871                                 if (insn->k == PASS)
7872                                         insn->k = msock_filter.len - idx - 2;
7873                                 else if (insn->k == FAIL)
7874                                         insn->k = msock_filter.len - idx - 3;
7875                         }
7876
7877                         if (insn->jt == PASS)
7878                                 insn->jt = msock_filter.len - idx - 2;
7879                         else if (insn->jt == FAIL)
7880                                 insn->jt = msock_filter.len - idx - 3;
7881
7882                         if (insn->jf == PASS)
7883                                 insn->jf = msock_filter.len - idx - 2;
7884                         else if (insn->jf == FAIL)
7885                                 insn->jf = msock_filter.len - idx - 3;
7886                 }
7887         }
7888
7889         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
7890                        &msock_filter, sizeof(msock_filter))) {
7891                 wpa_printf(MSG_ERROR, "nl80211: setsockopt(SO_ATTACH_FILTER) failed: %s",
7892                            strerror(errno));
7893                 return -1;
7894         }
7895
7896         return 0;
7897 }
7898
7899
7900 static void nl80211_remove_monitor_interface(
7901         struct wpa_driver_nl80211_data *drv)
7902 {
7903         if (drv->monitor_refcount > 0)
7904                 drv->monitor_refcount--;
7905         wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface: refcount=%d",
7906                    drv->monitor_refcount);
7907         if (drv->monitor_refcount > 0)
7908                 return;
7909
7910         if (drv->monitor_ifidx >= 0) {
7911                 nl80211_remove_iface(drv, drv->monitor_ifidx);
7912                 drv->monitor_ifidx = -1;
7913         }
7914         if (drv->monitor_sock >= 0) {
7915                 eloop_unregister_read_sock(drv->monitor_sock);
7916                 close(drv->monitor_sock);
7917                 drv->monitor_sock = -1;
7918         }
7919 }
7920
7921
7922 static int
7923 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
7924 {
7925         char buf[IFNAMSIZ];
7926         struct sockaddr_ll ll;
7927         int optval;
7928         socklen_t optlen;
7929
7930         if (drv->monitor_ifidx >= 0) {
7931                 drv->monitor_refcount++;
7932                 wpa_printf(MSG_DEBUG, "nl80211: Re-use existing monitor interface: refcount=%d",
7933                            drv->monitor_refcount);
7934                 return 0;
7935         }
7936
7937         if (os_strncmp(drv->first_bss->ifname, "p2p-", 4) == 0) {
7938                 /*
7939                  * P2P interface name is of the format p2p-%s-%d. For monitor
7940                  * interface name corresponding to P2P GO, replace "p2p-" with
7941                  * "mon-" to retain the same interface name length and to
7942                  * indicate that it is a monitor interface.
7943                  */
7944                 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss->ifname + 4);
7945         } else {
7946                 /* Non-P2P interface with AP functionality. */
7947                 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss->ifname);
7948         }
7949
7950         buf[IFNAMSIZ - 1] = '\0';
7951
7952         drv->monitor_ifidx =
7953                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
7954                                      0, NULL, NULL, 0);
7955
7956         if (drv->monitor_ifidx == -EOPNOTSUPP) {
7957                 /*
7958                  * This is backward compatibility for a few versions of
7959                  * the kernel only that didn't advertise the right
7960                  * attributes for the only driver that then supported
7961                  * AP mode w/o monitor -- ath6kl.
7962                  */
7963                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
7964                            "monitor interface type - try to run without it");
7965                 drv->device_ap_sme = 1;
7966         }
7967
7968         if (drv->monitor_ifidx < 0)
7969                 return -1;
7970
7971         if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
7972                 goto error;
7973
7974         memset(&ll, 0, sizeof(ll));
7975         ll.sll_family = AF_PACKET;
7976         ll.sll_ifindex = drv->monitor_ifidx;
7977         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
7978         if (drv->monitor_sock < 0) {
7979                 wpa_printf(MSG_ERROR, "nl80211: socket[PF_PACKET,SOCK_RAW] failed: %s",
7980                            strerror(errno));
7981                 goto error;
7982         }
7983
7984         if (add_monitor_filter(drv->monitor_sock)) {
7985                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
7986                            "interface; do filtering in user space");
7987                 /* This works, but will cost in performance. */
7988         }
7989
7990         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
7991                 wpa_printf(MSG_ERROR, "nl80211: monitor socket bind failed: %s",
7992                            strerror(errno));
7993                 goto error;
7994         }
7995
7996         optlen = sizeof(optval);
7997         optval = 20;
7998         if (setsockopt
7999             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
8000                 wpa_printf(MSG_ERROR, "nl80211: Failed to set socket priority: %s",
8001                            strerror(errno));
8002                 goto error;
8003         }
8004
8005         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
8006                                      drv, NULL)) {
8007                 wpa_printf(MSG_INFO, "nl80211: Could not register monitor read socket");
8008                 goto error;
8009         }
8010
8011         drv->monitor_refcount++;
8012         return 0;
8013  error:
8014         nl80211_remove_monitor_interface(drv);
8015         return -1;
8016 }
8017
8018
8019 static int nl80211_setup_ap(struct i802_bss *bss)
8020 {
8021         struct wpa_driver_nl80211_data *drv = bss->drv;
8022
8023         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
8024                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
8025
8026         /*
8027          * Disable Probe Request reporting unless we need it in this way for
8028          * devices that include the AP SME, in the other case (unless using
8029          * monitor iface) we'll get it through the nl_mgmt socket instead.
8030          */
8031         if (!drv->device_ap_sme)
8032                 wpa_driver_nl80211_probe_req_report(bss, 0);
8033
8034         if (!drv->device_ap_sme && !drv->use_monitor)
8035                 if (nl80211_mgmt_subscribe_ap(bss))
8036                         return -1;
8037
8038         if (drv->device_ap_sme && !drv->use_monitor)
8039                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
8040                         return -1;
8041
8042         if (!drv->device_ap_sme && drv->use_monitor &&
8043             nl80211_create_monitor_interface(drv) &&
8044             !drv->device_ap_sme)
8045                 return -1;
8046
8047         if (drv->device_ap_sme &&
8048             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
8049                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
8050                            "Probe Request frame reporting in AP mode");
8051                 /* Try to survive without this */
8052         }
8053
8054         return 0;
8055 }
8056
8057
8058 static void nl80211_teardown_ap(struct i802_bss *bss)
8059 {
8060         struct wpa_driver_nl80211_data *drv = bss->drv;
8061
8062         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
8063                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
8064         if (drv->device_ap_sme) {
8065                 wpa_driver_nl80211_probe_req_report(bss, 0);
8066                 if (!drv->use_monitor)
8067                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
8068         } else if (drv->use_monitor)
8069                 nl80211_remove_monitor_interface(drv);
8070         else
8071                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
8072
8073         bss->beacon_set = 0;
8074 }
8075
8076
8077 static int nl80211_send_eapol_data(struct i802_bss *bss,
8078                                    const u8 *addr, const u8 *data,
8079                                    size_t data_len)
8080 {
8081         struct sockaddr_ll ll;
8082         int ret;
8083
8084         if (bss->drv->eapol_tx_sock < 0) {
8085                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
8086                 return -1;
8087         }
8088
8089         os_memset(&ll, 0, sizeof(ll));
8090         ll.sll_family = AF_PACKET;
8091         ll.sll_ifindex = bss->ifindex;
8092         ll.sll_protocol = htons(ETH_P_PAE);
8093         ll.sll_halen = ETH_ALEN;
8094         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
8095         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
8096                      (struct sockaddr *) &ll, sizeof(ll));
8097         if (ret < 0)
8098                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
8099                            strerror(errno));
8100
8101         return ret;
8102 }
8103
8104
8105 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
8106
8107 static int wpa_driver_nl80211_hapd_send_eapol(
8108         void *priv, const u8 *addr, const u8 *data,
8109         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
8110 {
8111         struct i802_bss *bss = priv;
8112         struct wpa_driver_nl80211_data *drv = bss->drv;
8113         struct ieee80211_hdr *hdr;
8114         size_t len;
8115         u8 *pos;
8116         int res;
8117         int qos = flags & WPA_STA_WMM;
8118
8119         if (drv->device_ap_sme || !drv->use_monitor)
8120                 return nl80211_send_eapol_data(bss, addr, data, data_len);
8121
8122         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
8123                 data_len;
8124         hdr = os_zalloc(len);
8125         if (hdr == NULL) {
8126                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
8127                            (unsigned long) len);
8128                 return -1;
8129         }
8130
8131         hdr->frame_control =
8132                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
8133         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
8134         if (encrypt)
8135                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
8136         if (qos) {
8137                 hdr->frame_control |=
8138                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
8139         }
8140
8141         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
8142         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
8143         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
8144         pos = (u8 *) (hdr + 1);
8145
8146         if (qos) {
8147                 /* Set highest priority in QoS header */
8148                 pos[0] = 7;
8149                 pos[1] = 0;
8150                 pos += 2;
8151         }
8152
8153         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
8154         pos += sizeof(rfc1042_header);
8155         WPA_PUT_BE16(pos, ETH_P_PAE);
8156         pos += 2;
8157         memcpy(pos, data, data_len);
8158
8159         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
8160                                             0, 0, 0, 0);
8161         if (res < 0) {
8162                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
8163                            "failed: %d (%s)",
8164                            (unsigned long) len, errno, strerror(errno));
8165         }
8166         os_free(hdr);
8167
8168         return res;
8169 }
8170
8171
8172 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
8173                                             int total_flags,
8174                                             int flags_or, int flags_and)
8175 {
8176         struct i802_bss *bss = priv;
8177         struct wpa_driver_nl80211_data *drv = bss->drv;
8178         struct nl_msg *msg;
8179         struct nlattr *flags;
8180         struct nl80211_sta_flag_update upd;
8181
8182         msg = nlmsg_alloc();
8183         if (!msg)
8184                 return -ENOMEM;
8185
8186         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
8187
8188         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
8189                     if_nametoindex(bss->ifname));
8190         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8191
8192         /*
8193          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
8194          * can be removed eventually.
8195          */
8196         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
8197         if (!flags)
8198                 goto nla_put_failure;
8199         if (total_flags & WPA_STA_AUTHORIZED)
8200                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED);
8201
8202         if (total_flags & WPA_STA_WMM)
8203                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME);
8204
8205         if (total_flags & WPA_STA_SHORT_PREAMBLE)
8206                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE);
8207
8208         if (total_flags & WPA_STA_MFP)
8209                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP);
8210
8211         if (total_flags & WPA_STA_TDLS_PEER)
8212                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER);
8213
8214         nla_nest_end(msg, flags);
8215
8216         os_memset(&upd, 0, sizeof(upd));
8217         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
8218         upd.set = sta_flags_nl80211(flags_or);
8219         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
8220
8221         return send_and_recv_msgs(drv, msg, NULL, NULL);
8222  nla_put_failure:
8223         nlmsg_free(msg);
8224         return -ENOBUFS;
8225 }
8226
8227
8228 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
8229                                  struct wpa_driver_associate_params *params)
8230 {
8231         enum nl80211_iftype nlmode, old_mode;
8232         struct hostapd_freq_params freq = {
8233                 .freq = params->freq,
8234         };
8235
8236         if (params->p2p) {
8237                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
8238                            "group (GO)");
8239                 nlmode = NL80211_IFTYPE_P2P_GO;
8240         } else
8241                 nlmode = NL80211_IFTYPE_AP;
8242
8243         old_mode = drv->nlmode;
8244         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
8245                 nl80211_remove_monitor_interface(drv);
8246                 return -1;
8247         }
8248
8249         if (wpa_driver_nl80211_set_freq(drv->first_bss, &freq)) {
8250                 if (old_mode != nlmode)
8251                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
8252                 nl80211_remove_monitor_interface(drv);
8253                 return -1;
8254         }
8255
8256         return 0;
8257 }
8258
8259
8260 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
8261 {
8262         struct nl_msg *msg;
8263         int ret = -1;
8264
8265         msg = nlmsg_alloc();
8266         if (!msg)
8267                 return -1;
8268
8269         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
8270         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8271         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8272         msg = NULL;
8273         if (ret) {
8274                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
8275                            "(%s)", ret, strerror(-ret));
8276                 goto nla_put_failure;
8277         }
8278
8279         ret = 0;
8280         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
8281
8282 nla_put_failure:
8283         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8284                                         NL80211_IFTYPE_STATION)) {
8285                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
8286                            "station mode");
8287         }
8288
8289         nlmsg_free(msg);
8290         return ret;
8291 }
8292
8293
8294 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
8295                                    struct wpa_driver_associate_params *params)
8296 {
8297         struct nl_msg *msg;
8298         int ret = -1;
8299         int count = 0;
8300
8301         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
8302
8303         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8304                                         NL80211_IFTYPE_ADHOC)) {
8305                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
8306                            "IBSS mode");
8307                 return -1;
8308         }
8309
8310 retry:
8311         msg = nlmsg_alloc();
8312         if (!msg)
8313                 return -1;
8314
8315         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
8316         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8317
8318         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
8319                 goto nla_put_failure;
8320
8321         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
8322                           params->ssid, params->ssid_len);
8323         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
8324                 params->ssid);
8325         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
8326         drv->ssid_len = params->ssid_len;
8327
8328         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
8329         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
8330
8331         ret = nl80211_set_conn_keys(params, msg);
8332         if (ret)
8333                 goto nla_put_failure;
8334
8335         if (params->bssid && params->fixed_bssid) {
8336                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
8337                            MAC2STR(params->bssid));
8338                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
8339         }
8340
8341         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
8342             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
8343             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
8344             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
8345                 wpa_printf(MSG_DEBUG, "  * control port");
8346                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
8347         }
8348
8349         if (params->wpa_ie) {
8350                 wpa_hexdump(MSG_DEBUG,
8351                             "  * Extra IEs for Beacon/Probe Response frames",
8352                             params->wpa_ie, params->wpa_ie_len);
8353                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
8354                         params->wpa_ie);
8355         }
8356
8357         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8358         msg = NULL;
8359         if (ret) {
8360                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
8361                            ret, strerror(-ret));
8362                 count++;
8363                 if (ret == -EALREADY && count == 1) {
8364                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
8365                                    "forced leave");
8366                         nl80211_leave_ibss(drv);
8367                         nlmsg_free(msg);
8368                         goto retry;
8369                 }
8370
8371                 goto nla_put_failure;
8372         }
8373         ret = 0;
8374         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
8375
8376 nla_put_failure:
8377         nlmsg_free(msg);
8378         return ret;
8379 }
8380
8381
8382 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
8383                                   struct wpa_driver_associate_params *params,
8384                                   struct nl_msg *msg)
8385 {
8386         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8387
8388         if (params->bssid) {
8389                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
8390                            MAC2STR(params->bssid));
8391                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
8392         }
8393
8394         if (params->bssid_hint) {
8395                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
8396                            MAC2STR(params->bssid_hint));
8397                 NLA_PUT(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
8398                         params->bssid_hint);
8399         }
8400
8401         if (params->freq) {
8402                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
8403                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
8404                 drv->assoc_freq = params->freq;
8405         } else
8406                 drv->assoc_freq = 0;
8407
8408         if (params->freq_hint) {
8409                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
8410                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
8411                             params->freq_hint);
8412         }
8413
8414         if (params->bg_scan_period >= 0) {
8415                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
8416                            params->bg_scan_period);
8417                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
8418                             params->bg_scan_period);
8419         }
8420
8421         if (params->ssid) {
8422                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
8423                                   params->ssid, params->ssid_len);
8424                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
8425                         params->ssid);
8426                 if (params->ssid_len > sizeof(drv->ssid))
8427                         goto nla_put_failure;
8428                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
8429                 drv->ssid_len = params->ssid_len;
8430         }
8431
8432         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
8433         if (params->wpa_ie)
8434                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
8435                         params->wpa_ie);
8436
8437         if (params->wpa_proto) {
8438                 enum nl80211_wpa_versions ver = 0;
8439
8440                 if (params->wpa_proto & WPA_PROTO_WPA)
8441                         ver |= NL80211_WPA_VERSION_1;
8442                 if (params->wpa_proto & WPA_PROTO_RSN)
8443                         ver |= NL80211_WPA_VERSION_2;
8444
8445                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
8446                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
8447         }
8448
8449         if (params->pairwise_suite != WPA_CIPHER_NONE) {
8450                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
8451                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
8452                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
8453         }
8454
8455         if (params->group_suite != WPA_CIPHER_NONE) {
8456                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
8457                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
8458                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
8459         }
8460
8461         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
8462             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
8463             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
8464             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
8465             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM) {
8466                 int mgmt = WLAN_AKM_SUITE_PSK;
8467
8468                 switch (params->key_mgmt_suite) {
8469                 case WPA_KEY_MGMT_CCKM:
8470                         mgmt = WLAN_AKM_SUITE_CCKM;
8471                         break;
8472                 case WPA_KEY_MGMT_IEEE8021X:
8473                         mgmt = WLAN_AKM_SUITE_8021X;
8474                         break;
8475                 case WPA_KEY_MGMT_FT_IEEE8021X:
8476                         mgmt = WLAN_AKM_SUITE_FT_8021X;
8477                         break;
8478                 case WPA_KEY_MGMT_FT_PSK:
8479                         mgmt = WLAN_AKM_SUITE_FT_PSK;
8480                         break;
8481                 case WPA_KEY_MGMT_PSK:
8482                 default:
8483                         mgmt = WLAN_AKM_SUITE_PSK;
8484                         break;
8485                 }
8486                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
8487         }
8488
8489         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
8490
8491         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
8492                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
8493
8494         if (params->disable_ht)
8495                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
8496
8497         if (params->htcaps && params->htcaps_mask) {
8498                 int sz = sizeof(struct ieee80211_ht_capabilities);
8499                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
8500                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
8501                         params->htcaps_mask);
8502         }
8503
8504 #ifdef CONFIG_VHT_OVERRIDES
8505         if (params->disable_vht) {
8506                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
8507                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT);
8508         }
8509
8510         if (params->vhtcaps && params->vhtcaps_mask) {
8511                 int sz = sizeof(struct ieee80211_vht_capabilities);
8512                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps);
8513                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
8514                         params->vhtcaps_mask);
8515         }
8516 #endif /* CONFIG_VHT_OVERRIDES */
8517
8518         if (params->p2p)
8519                 wpa_printf(MSG_DEBUG, "  * P2P group");
8520
8521         return 0;
8522 nla_put_failure:
8523         return -1;
8524 }
8525
8526
8527 static int wpa_driver_nl80211_try_connect(
8528         struct wpa_driver_nl80211_data *drv,
8529         struct wpa_driver_associate_params *params)
8530 {
8531         struct nl_msg *msg;
8532         enum nl80211_auth_type type;
8533         int ret;
8534         int algs;
8535
8536         msg = nlmsg_alloc();
8537         if (!msg)
8538                 return -1;
8539
8540         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
8541         nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
8542
8543         ret = nl80211_connect_common(drv, params, msg);
8544         if (ret)
8545                 goto nla_put_failure;
8546
8547         algs = 0;
8548         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
8549                 algs++;
8550         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
8551                 algs++;
8552         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
8553                 algs++;
8554         if (algs > 1) {
8555                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
8556                            "selection");
8557                 goto skip_auth_type;
8558         }
8559
8560         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
8561                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
8562         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
8563                 type = NL80211_AUTHTYPE_SHARED_KEY;
8564         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
8565                 type = NL80211_AUTHTYPE_NETWORK_EAP;
8566         else if (params->auth_alg & WPA_AUTH_ALG_FT)
8567                 type = NL80211_AUTHTYPE_FT;
8568         else
8569                 goto nla_put_failure;
8570
8571         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
8572         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
8573
8574 skip_auth_type:
8575         ret = nl80211_set_conn_keys(params, msg);
8576         if (ret)
8577                 goto nla_put_failure;
8578
8579         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8580         msg = NULL;
8581         if (ret) {
8582                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
8583                            "(%s)", ret, strerror(-ret));
8584                 goto nla_put_failure;
8585         }
8586         ret = 0;
8587         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
8588
8589 nla_put_failure:
8590         nlmsg_free(msg);
8591         return ret;
8592
8593 }
8594
8595
8596 static int wpa_driver_nl80211_connect(
8597         struct wpa_driver_nl80211_data *drv,
8598         struct wpa_driver_associate_params *params)
8599 {
8600         int ret = wpa_driver_nl80211_try_connect(drv, params);
8601         if (ret == -EALREADY) {
8602                 /*
8603                  * cfg80211 does not currently accept new connections if
8604                  * we are already connected. As a workaround, force
8605                  * disconnection and try again.
8606                  */
8607                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
8608                            "disconnecting before reassociation "
8609                            "attempt");
8610                 if (wpa_driver_nl80211_disconnect(
8611                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
8612                         return -1;
8613                 ret = wpa_driver_nl80211_try_connect(drv, params);
8614         }
8615         return ret;
8616 }
8617
8618
8619 static int wpa_driver_nl80211_associate(
8620         void *priv, struct wpa_driver_associate_params *params)
8621 {
8622         struct i802_bss *bss = priv;
8623         struct wpa_driver_nl80211_data *drv = bss->drv;
8624         int ret;
8625         struct nl_msg *msg;
8626
8627         if (params->mode == IEEE80211_MODE_AP)
8628                 return wpa_driver_nl80211_ap(drv, params);
8629
8630         if (params->mode == IEEE80211_MODE_IBSS)
8631                 return wpa_driver_nl80211_ibss(drv, params);
8632
8633         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
8634                 enum nl80211_iftype nlmode = params->p2p ?
8635                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
8636
8637                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
8638                         return -1;
8639                 return wpa_driver_nl80211_connect(drv, params);
8640         }
8641
8642         nl80211_mark_disconnected(drv);
8643
8644         msg = nlmsg_alloc();
8645         if (!msg)
8646                 return -1;
8647
8648         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
8649                    drv->ifindex);
8650         nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
8651
8652         ret = nl80211_connect_common(drv, params, msg);
8653         if (ret)
8654                 goto nla_put_failure;
8655
8656         if (params->prev_bssid) {
8657                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
8658                            MAC2STR(params->prev_bssid));
8659                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
8660                         params->prev_bssid);
8661         }
8662
8663         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8664         msg = NULL;
8665         if (ret) {
8666                 wpa_dbg(drv->ctx, MSG_DEBUG,
8667                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
8668                         ret, strerror(-ret));
8669                 nl80211_dump_scan(drv);
8670                 goto nla_put_failure;
8671         }
8672         ret = 0;
8673         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
8674                    "successfully");
8675
8676 nla_put_failure:
8677         nlmsg_free(msg);
8678         return ret;
8679 }
8680
8681
8682 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
8683                             int ifindex, enum nl80211_iftype mode)
8684 {
8685         struct nl_msg *msg;
8686         int ret = -ENOBUFS;
8687
8688         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
8689                    ifindex, mode, nl80211_iftype_str(mode));
8690
8691         msg = nlmsg_alloc();
8692         if (!msg)
8693                 return -ENOMEM;
8694
8695         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
8696         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
8697                 goto nla_put_failure;
8698         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
8699
8700         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8701         msg = NULL;
8702         if (!ret)
8703                 return 0;
8704 nla_put_failure:
8705         nlmsg_free(msg);
8706         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
8707                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
8708         return ret;
8709 }
8710
8711
8712 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
8713                                        enum nl80211_iftype nlmode)
8714 {
8715         struct wpa_driver_nl80211_data *drv = bss->drv;
8716         int ret = -1;
8717         int i;
8718         int was_ap = is_ap_interface(drv->nlmode);
8719         int res;
8720
8721         res = nl80211_set_mode(drv, drv->ifindex, nlmode);
8722         if (res && nlmode == nl80211_get_ifmode(bss))
8723                 res = 0;
8724
8725         if (res == 0) {
8726                 drv->nlmode = nlmode;
8727                 ret = 0;
8728                 goto done;
8729         }
8730
8731         if (res == -ENODEV)
8732                 return -1;
8733
8734         if (nlmode == drv->nlmode) {
8735                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
8736                            "requested mode - ignore error");
8737                 ret = 0;
8738                 goto done; /* Already in the requested mode */
8739         }
8740
8741         /* mac80211 doesn't allow mode changes while the device is up, so
8742          * take the device down, try to set the mode again, and bring the
8743          * device back up.
8744          */
8745         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
8746                    "interface down");
8747         for (i = 0; i < 10; i++) {
8748                 res = i802_set_iface_flags(bss, 0);
8749                 if (res == -EACCES || res == -ENODEV)
8750                         break;
8751                 if (res == 0) {
8752                         /* Try to set the mode again while the interface is
8753                          * down */
8754                         ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
8755                         if (ret == -EACCES)
8756                                 break;
8757                         res = i802_set_iface_flags(bss, 1);
8758                         if (res && !ret)
8759                                 ret = -1;
8760                         else if (ret != -EBUSY)
8761                                 break;
8762                 } else
8763                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
8764                                    "interface down");
8765                 os_sleep(0, 100000);
8766         }
8767
8768         if (!ret) {
8769                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
8770                            "interface is down");
8771                 drv->nlmode = nlmode;
8772                 drv->ignore_if_down_event = 1;
8773         }
8774
8775 done:
8776         if (ret) {
8777                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
8778                            "from %d failed", nlmode, drv->nlmode);
8779                 return ret;
8780         }
8781
8782         if (is_p2p_net_interface(nlmode))
8783                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
8784         else if (drv->disabled_11b_rates)
8785                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
8786
8787         if (is_ap_interface(nlmode)) {
8788                 nl80211_mgmt_unsubscribe(bss, "start AP");
8789                 /* Setup additional AP mode functionality if needed */
8790                 if (nl80211_setup_ap(bss))
8791                         return -1;
8792         } else if (was_ap) {
8793                 /* Remove additional AP mode functionality */
8794                 nl80211_teardown_ap(bss);
8795         } else {
8796                 nl80211_mgmt_unsubscribe(bss, "mode change");
8797         }
8798
8799         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
8800             nl80211_mgmt_subscribe_non_ap(bss) < 0)
8801                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
8802                            "frame processing - ignore for now");
8803
8804         return 0;
8805 }
8806
8807
8808 static int wpa_driver_nl80211_get_capa(void *priv,
8809                                        struct wpa_driver_capa *capa)
8810 {
8811         struct i802_bss *bss = priv;
8812         struct wpa_driver_nl80211_data *drv = bss->drv;
8813         if (!drv->has_capability)
8814                 return -1;
8815         os_memcpy(capa, &drv->capa, sizeof(*capa));
8816         if (drv->extended_capa && drv->extended_capa_mask) {
8817                 capa->extended_capa = drv->extended_capa;
8818                 capa->extended_capa_mask = drv->extended_capa_mask;
8819                 capa->extended_capa_len = drv->extended_capa_len;
8820         }
8821
8822         if ((capa->flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
8823             !drv->allow_p2p_device) {
8824                 wpa_printf(MSG_DEBUG, "nl80211: Do not indicate P2P_DEVICE support (p2p_device=1 driver param not specified)");
8825                 capa->flags &= ~WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
8826         }
8827
8828         return 0;
8829 }
8830
8831
8832 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
8833 {
8834         struct i802_bss *bss = priv;
8835         struct wpa_driver_nl80211_data *drv = bss->drv;
8836
8837         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
8838                    bss->ifname, drv->operstate, state,
8839                    state ? "UP" : "DORMANT");
8840         drv->operstate = state;
8841         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
8842                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
8843 }
8844
8845
8846 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
8847 {
8848         struct i802_bss *bss = priv;
8849         struct wpa_driver_nl80211_data *drv = bss->drv;
8850         struct nl_msg *msg;
8851         struct nl80211_sta_flag_update upd;
8852         int ret = -ENOBUFS;
8853
8854         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
8855                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
8856                 return 0;
8857         }
8858
8859         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
8860                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
8861
8862         msg = nlmsg_alloc();
8863         if (!msg)
8864                 return -ENOMEM;
8865
8866         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
8867
8868         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
8869                     if_nametoindex(bss->ifname));
8870         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
8871
8872         os_memset(&upd, 0, sizeof(upd));
8873         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
8874         if (authorized)
8875                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
8876         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
8877
8878         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8879         msg = NULL;
8880         if (!ret)
8881                 return 0;
8882  nla_put_failure:
8883         nlmsg_free(msg);
8884         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
8885                    ret, strerror(-ret));
8886         return ret;
8887 }
8888
8889
8890 /* Set kernel driver on given frequency (MHz) */
8891 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
8892 {
8893         struct i802_bss *bss = priv;
8894         return wpa_driver_nl80211_set_freq(bss, freq);
8895 }
8896
8897
8898 static inline int min_int(int a, int b)
8899 {
8900         if (a < b)
8901                 return a;
8902         return b;
8903 }
8904
8905
8906 static int get_key_handler(struct nl_msg *msg, void *arg)
8907 {
8908         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8909         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8910
8911         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8912                   genlmsg_attrlen(gnlh, 0), NULL);
8913
8914         /*
8915          * TODO: validate the key index and mac address!
8916          * Otherwise, there's a race condition as soon as
8917          * the kernel starts sending key notifications.
8918          */
8919
8920         if (tb[NL80211_ATTR_KEY_SEQ])
8921                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
8922                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
8923         return NL_SKIP;
8924 }
8925
8926
8927 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
8928                            int idx, u8 *seq)
8929 {
8930         struct i802_bss *bss = priv;
8931         struct wpa_driver_nl80211_data *drv = bss->drv;
8932         struct nl_msg *msg;
8933
8934         msg = nlmsg_alloc();
8935         if (!msg)
8936                 return -ENOMEM;
8937
8938         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
8939
8940         if (addr)
8941                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8942         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
8943         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
8944
8945         memset(seq, 0, 6);
8946
8947         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
8948  nla_put_failure:
8949         nlmsg_free(msg);
8950         return -ENOBUFS;
8951 }
8952
8953
8954 static int i802_set_rts(void *priv, int rts)
8955 {
8956         struct i802_bss *bss = priv;
8957         struct wpa_driver_nl80211_data *drv = bss->drv;
8958         struct nl_msg *msg;
8959         int ret = -ENOBUFS;
8960         u32 val;
8961
8962         msg = nlmsg_alloc();
8963         if (!msg)
8964                 return -ENOMEM;
8965
8966         if (rts >= 2347)
8967                 val = (u32) -1;
8968         else
8969                 val = rts;
8970
8971         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
8972         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8973         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
8974
8975         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8976         msg = NULL;
8977         if (!ret)
8978                 return 0;
8979 nla_put_failure:
8980         nlmsg_free(msg);
8981         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
8982                    "%d (%s)", rts, ret, strerror(-ret));
8983         return ret;
8984 }
8985
8986
8987 static int i802_set_frag(void *priv, int frag)
8988 {
8989         struct i802_bss *bss = priv;
8990         struct wpa_driver_nl80211_data *drv = bss->drv;
8991         struct nl_msg *msg;
8992         int ret = -ENOBUFS;
8993         u32 val;
8994
8995         msg = nlmsg_alloc();
8996         if (!msg)
8997                 return -ENOMEM;
8998
8999         if (frag >= 2346)
9000                 val = (u32) -1;
9001         else
9002                 val = frag;
9003
9004         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
9005         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
9006         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
9007
9008         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9009         msg = NULL;
9010         if (!ret)
9011                 return 0;
9012 nla_put_failure:
9013         nlmsg_free(msg);
9014         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
9015                    "%d: %d (%s)", frag, ret, strerror(-ret));
9016         return ret;
9017 }
9018
9019
9020 static int i802_flush(void *priv)
9021 {
9022         struct i802_bss *bss = priv;
9023         struct wpa_driver_nl80211_data *drv = bss->drv;
9024         struct nl_msg *msg;
9025         int res;
9026
9027         msg = nlmsg_alloc();
9028         if (!msg)
9029                 return -1;
9030
9031         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
9032                    bss->ifname);
9033         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
9034
9035         /*
9036          * XXX: FIX! this needs to flush all VLANs too
9037          */
9038         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
9039                     if_nametoindex(bss->ifname));
9040
9041         res = send_and_recv_msgs(drv, msg, NULL, NULL);
9042         if (res) {
9043                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
9044                            "(%s)", res, strerror(-res));
9045         }
9046         return res;
9047  nla_put_failure:
9048         nlmsg_free(msg);
9049         return -ENOBUFS;
9050 }
9051
9052
9053 static int get_sta_handler(struct nl_msg *msg, void *arg)
9054 {
9055         struct nlattr *tb[NL80211_ATTR_MAX + 1];
9056         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
9057         struct hostap_sta_driver_data *data = arg;
9058         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
9059         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
9060                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
9061                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
9062                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
9063                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
9064                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
9065                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
9066         };
9067
9068         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
9069                   genlmsg_attrlen(gnlh, 0), NULL);
9070
9071         /*
9072          * TODO: validate the interface and mac address!
9073          * Otherwise, there's a race condition as soon as
9074          * the kernel starts sending station notifications.
9075          */
9076
9077         if (!tb[NL80211_ATTR_STA_INFO]) {
9078                 wpa_printf(MSG_DEBUG, "sta stats missing!");
9079                 return NL_SKIP;
9080         }
9081         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
9082                              tb[NL80211_ATTR_STA_INFO],
9083                              stats_policy)) {
9084                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
9085                 return NL_SKIP;
9086         }
9087
9088         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
9089                 data->inactive_msec =
9090                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
9091         if (stats[NL80211_STA_INFO_RX_BYTES])
9092                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
9093         if (stats[NL80211_STA_INFO_TX_BYTES])
9094                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
9095         if (stats[NL80211_STA_INFO_RX_PACKETS])
9096                 data->rx_packets =
9097                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
9098         if (stats[NL80211_STA_INFO_TX_PACKETS])
9099                 data->tx_packets =
9100                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
9101         if (stats[NL80211_STA_INFO_TX_FAILED])
9102                 data->tx_retry_failed =
9103                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
9104
9105         return NL_SKIP;
9106 }
9107
9108 static int i802_read_sta_data(struct i802_bss *bss,
9109                               struct hostap_sta_driver_data *data,
9110                               const u8 *addr)
9111 {
9112         struct wpa_driver_nl80211_data *drv = bss->drv;
9113         struct nl_msg *msg;
9114
9115         os_memset(data, 0, sizeof(*data));
9116         msg = nlmsg_alloc();
9117         if (!msg)
9118                 return -ENOMEM;
9119
9120         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
9121
9122         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
9123         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
9124
9125         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
9126  nla_put_failure:
9127         nlmsg_free(msg);
9128         return -ENOBUFS;
9129 }
9130
9131
9132 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
9133                                     int cw_min, int cw_max, int burst_time)
9134 {
9135         struct i802_bss *bss = priv;
9136         struct wpa_driver_nl80211_data *drv = bss->drv;
9137         struct nl_msg *msg;
9138         struct nlattr *txq, *params;
9139
9140         msg = nlmsg_alloc();
9141         if (!msg)
9142                 return -1;
9143
9144         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
9145
9146         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
9147
9148         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
9149         if (!txq)
9150                 goto nla_put_failure;
9151
9152         /* We are only sending parameters for a single TXQ at a time */
9153         params = nla_nest_start(msg, 1);
9154         if (!params)
9155                 goto nla_put_failure;
9156
9157         switch (queue) {
9158         case 0:
9159                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
9160                 break;
9161         case 1:
9162                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
9163                 break;
9164         case 2:
9165                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
9166                 break;
9167         case 3:
9168                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
9169                 break;
9170         }
9171         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
9172          * 32 usec, so need to convert the value here. */
9173         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
9174         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
9175         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
9176         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
9177
9178         nla_nest_end(msg, params);
9179
9180         nla_nest_end(msg, txq);
9181
9182         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
9183                 return 0;
9184         msg = NULL;
9185  nla_put_failure:
9186         nlmsg_free(msg);
9187         return -1;
9188 }
9189
9190
9191 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
9192                              const char *ifname, int vlan_id)
9193 {
9194         struct wpa_driver_nl80211_data *drv = bss->drv;
9195         struct nl_msg *msg;
9196         int ret = -ENOBUFS;
9197
9198         msg = nlmsg_alloc();
9199         if (!msg)
9200                 return -ENOMEM;
9201
9202         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
9203                    ", ifname=%s[%d], vlan_id=%d)",
9204                    bss->ifname, if_nametoindex(bss->ifname),
9205                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
9206         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
9207
9208         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
9209                     if_nametoindex(bss->ifname));
9210         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
9211         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
9212                     if_nametoindex(ifname));
9213
9214         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9215         msg = NULL;
9216         if (ret < 0) {
9217                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
9218                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
9219                            MAC2STR(addr), ifname, vlan_id, ret,
9220                            strerror(-ret));
9221         }
9222  nla_put_failure:
9223         nlmsg_free(msg);
9224         return ret;
9225 }
9226
9227
9228 static int i802_get_inact_sec(void *priv, const u8 *addr)
9229 {
9230         struct hostap_sta_driver_data data;
9231         int ret;
9232
9233         data.inactive_msec = (unsigned long) -1;
9234         ret = i802_read_sta_data(priv, &data, addr);
9235         if (ret || data.inactive_msec == (unsigned long) -1)
9236                 return -1;
9237         return data.inactive_msec / 1000;
9238 }
9239
9240
9241 static int i802_sta_clear_stats(void *priv, const u8 *addr)
9242 {
9243 #if 0
9244         /* TODO */
9245 #endif
9246         return 0;
9247 }
9248
9249
9250 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
9251                            int reason)
9252 {
9253         struct i802_bss *bss = priv;
9254         struct wpa_driver_nl80211_data *drv = bss->drv;
9255         struct ieee80211_mgmt mgmt;
9256
9257         if (drv->device_ap_sme)
9258                 return wpa_driver_nl80211_sta_remove(bss, addr);
9259
9260         memset(&mgmt, 0, sizeof(mgmt));
9261         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
9262                                           WLAN_FC_STYPE_DEAUTH);
9263         memcpy(mgmt.da, addr, ETH_ALEN);
9264         memcpy(mgmt.sa, own_addr, ETH_ALEN);
9265         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
9266         mgmt.u.deauth.reason_code = host_to_le16(reason);
9267         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9268                                             IEEE80211_HDRLEN +
9269                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
9270                                             0);
9271 }
9272
9273
9274 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
9275                              int reason)
9276 {
9277         struct i802_bss *bss = priv;
9278         struct wpa_driver_nl80211_data *drv = bss->drv;
9279         struct ieee80211_mgmt mgmt;
9280
9281         if (drv->device_ap_sme)
9282                 return wpa_driver_nl80211_sta_remove(bss, addr);
9283
9284         memset(&mgmt, 0, sizeof(mgmt));
9285         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
9286                                           WLAN_FC_STYPE_DISASSOC);
9287         memcpy(mgmt.da, addr, ETH_ALEN);
9288         memcpy(mgmt.sa, own_addr, ETH_ALEN);
9289         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
9290         mgmt.u.disassoc.reason_code = host_to_le16(reason);
9291         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9292                                             IEEE80211_HDRLEN +
9293                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
9294                                             0);
9295 }
9296
9297
9298 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
9299 {
9300         int i;
9301         int *old;
9302
9303         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
9304                    ifidx);
9305         for (i = 0; i < drv->num_if_indices; i++) {
9306                 if (drv->if_indices[i] == 0) {
9307                         drv->if_indices[i] = ifidx;
9308                         return;
9309                 }
9310         }
9311
9312         if (drv->if_indices != drv->default_if_indices)
9313                 old = drv->if_indices;
9314         else
9315                 old = NULL;
9316
9317         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
9318                                            sizeof(int));
9319         if (!drv->if_indices) {
9320                 if (!old)
9321                         drv->if_indices = drv->default_if_indices;
9322                 else
9323                         drv->if_indices = old;
9324                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
9325                            "interfaces");
9326                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
9327                 return;
9328         } else if (!old)
9329                 os_memcpy(drv->if_indices, drv->default_if_indices,
9330                           sizeof(drv->default_if_indices));
9331         drv->if_indices[drv->num_if_indices] = ifidx;
9332         drv->num_if_indices++;
9333 }
9334
9335
9336 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
9337 {
9338         int i;
9339
9340         for (i = 0; i < drv->num_if_indices; i++) {
9341                 if (drv->if_indices[i] == ifidx) {
9342                         drv->if_indices[i] = 0;
9343                         break;
9344                 }
9345         }
9346 }
9347
9348
9349 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
9350 {
9351         int i;
9352
9353         for (i = 0; i < drv->num_if_indices; i++)
9354                 if (drv->if_indices[i] == ifidx)
9355                         return 1;
9356
9357         return 0;
9358 }
9359
9360
9361 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
9362                             const char *bridge_ifname, char *ifname_wds)
9363 {
9364         struct i802_bss *bss = priv;
9365         struct wpa_driver_nl80211_data *drv = bss->drv;
9366         char name[IFNAMSIZ + 1];
9367
9368         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
9369         if (ifname_wds)
9370                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
9371
9372         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
9373                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
9374         if (val) {
9375                 if (!if_nametoindex(name)) {
9376                         if (nl80211_create_iface(drv, name,
9377                                                  NL80211_IFTYPE_AP_VLAN,
9378                                                  bss->addr, 1, NULL, NULL, 0) <
9379                             0)
9380                                 return -1;
9381                         if (bridge_ifname &&
9382                             linux_br_add_if(drv->global->ioctl_sock,
9383                                             bridge_ifname, name) < 0)
9384                                 return -1;
9385                 }
9386                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
9387                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
9388                                    "interface %s up", name);
9389                 }
9390                 return i802_set_sta_vlan(priv, addr, name, 0);
9391         } else {
9392                 if (bridge_ifname)
9393                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
9394                                         name);
9395
9396                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
9397                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
9398                                                     name);
9399         }
9400 }
9401
9402
9403 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
9404 {
9405         struct wpa_driver_nl80211_data *drv = eloop_ctx;
9406         struct sockaddr_ll lladdr;
9407         unsigned char buf[3000];
9408         int len;
9409         socklen_t fromlen = sizeof(lladdr);
9410
9411         len = recvfrom(sock, buf, sizeof(buf), 0,
9412                        (struct sockaddr *)&lladdr, &fromlen);
9413         if (len < 0) {
9414                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
9415                            strerror(errno));
9416                 return;
9417         }
9418
9419         if (have_ifidx(drv, lladdr.sll_ifindex))
9420                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
9421 }
9422
9423
9424 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
9425                              struct i802_bss *bss,
9426                              const char *brname, const char *ifname)
9427 {
9428         int ifindex;
9429         char in_br[IFNAMSIZ];
9430
9431         os_strlcpy(bss->brname, brname, IFNAMSIZ);
9432         ifindex = if_nametoindex(brname);
9433         if (ifindex == 0) {
9434                 /*
9435                  * Bridge was configured, but the bridge device does
9436                  * not exist. Try to add it now.
9437                  */
9438                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
9439                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
9440                                    "bridge interface %s: %s",
9441                                    brname, strerror(errno));
9442                         return -1;
9443                 }
9444                 bss->added_bridge = 1;
9445                 add_ifidx(drv, if_nametoindex(brname));
9446         }
9447
9448         if (linux_br_get(in_br, ifname) == 0) {
9449                 if (os_strcmp(in_br, brname) == 0)
9450                         return 0; /* already in the bridge */
9451
9452                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
9453                            "bridge %s", ifname, in_br);
9454                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
9455                     0) {
9456                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
9457                                    "remove interface %s from bridge "
9458                                    "%s: %s",
9459                                    ifname, brname, strerror(errno));
9460                         return -1;
9461                 }
9462         }
9463
9464         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
9465                    ifname, brname);
9466         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
9467                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
9468                            "into bridge %s: %s",
9469                            ifname, brname, strerror(errno));
9470                 return -1;
9471         }
9472         bss->added_if_into_bridge = 1;
9473
9474         return 0;
9475 }
9476
9477
9478 static void *i802_init(struct hostapd_data *hapd,
9479                        struct wpa_init_params *params)
9480 {
9481         struct wpa_driver_nl80211_data *drv;
9482         struct i802_bss *bss;
9483         size_t i;
9484         char brname[IFNAMSIZ];
9485         int ifindex, br_ifindex;
9486         int br_added = 0;
9487
9488         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
9489                                           params->global_priv, 1,
9490                                           params->bssid);
9491         if (bss == NULL)
9492                 return NULL;
9493
9494         drv = bss->drv;
9495
9496         if (linux_br_get(brname, params->ifname) == 0) {
9497                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
9498                            params->ifname, brname);
9499                 br_ifindex = if_nametoindex(brname);
9500         } else {
9501                 brname[0] = '\0';
9502                 br_ifindex = 0;
9503         }
9504
9505         for (i = 0; i < params->num_bridge; i++) {
9506                 if (params->bridge[i]) {
9507                         ifindex = if_nametoindex(params->bridge[i]);
9508                         if (ifindex)
9509                                 add_ifidx(drv, ifindex);
9510                         if (ifindex == br_ifindex)
9511                                 br_added = 1;
9512                 }
9513         }
9514         if (!br_added && br_ifindex &&
9515             (params->num_bridge == 0 || !params->bridge[0]))
9516                 add_ifidx(drv, br_ifindex);
9517
9518         /* start listening for EAPOL on the default AP interface */
9519         add_ifidx(drv, drv->ifindex);
9520
9521         if (params->num_bridge && params->bridge[0] &&
9522             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
9523                 goto failed;
9524
9525         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
9526         if (drv->eapol_sock < 0) {
9527                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
9528                            strerror(errno));
9529                 goto failed;
9530         }
9531
9532         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
9533         {
9534                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
9535                 goto failed;
9536         }
9537
9538         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
9539                                params->own_addr))
9540                 goto failed;
9541
9542         memcpy(bss->addr, params->own_addr, ETH_ALEN);
9543
9544         return bss;
9545
9546 failed:
9547         wpa_driver_nl80211_deinit(bss);
9548         return NULL;
9549 }
9550
9551
9552 static void i802_deinit(void *priv)
9553 {
9554         struct i802_bss *bss = priv;
9555         wpa_driver_nl80211_deinit(bss);
9556 }
9557
9558
9559 static enum nl80211_iftype wpa_driver_nl80211_if_type(
9560         enum wpa_driver_if_type type)
9561 {
9562         switch (type) {
9563         case WPA_IF_STATION:
9564                 return NL80211_IFTYPE_STATION;
9565         case WPA_IF_P2P_CLIENT:
9566         case WPA_IF_P2P_GROUP:
9567                 return NL80211_IFTYPE_P2P_CLIENT;
9568         case WPA_IF_AP_VLAN:
9569                 return NL80211_IFTYPE_AP_VLAN;
9570         case WPA_IF_AP_BSS:
9571                 return NL80211_IFTYPE_AP;
9572         case WPA_IF_P2P_GO:
9573                 return NL80211_IFTYPE_P2P_GO;
9574         case WPA_IF_P2P_DEVICE:
9575                 return NL80211_IFTYPE_P2P_DEVICE;
9576         }
9577         return -1;
9578 }
9579
9580
9581 #ifdef CONFIG_P2P
9582
9583 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
9584 {
9585         struct wpa_driver_nl80211_data *drv;
9586         dl_list_for_each(drv, &global->interfaces,
9587                          struct wpa_driver_nl80211_data, list) {
9588                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
9589                         return 1;
9590         }
9591         return 0;
9592 }
9593
9594
9595 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
9596                                       u8 *new_addr)
9597 {
9598         unsigned int idx;
9599
9600         if (!drv->global)
9601                 return -1;
9602
9603         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
9604         for (idx = 0; idx < 64; idx++) {
9605                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
9606                 new_addr[0] ^= idx << 2;
9607                 if (!nl80211_addr_in_use(drv->global, new_addr))
9608                         break;
9609         }
9610         if (idx == 64)
9611                 return -1;
9612
9613         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
9614                    MACSTR, MAC2STR(new_addr));
9615
9616         return 0;
9617 }
9618
9619 #endif /* CONFIG_P2P */
9620
9621
9622 struct wdev_info {
9623         u64 wdev_id;
9624         int wdev_id_set;
9625         u8 macaddr[ETH_ALEN];
9626 };
9627
9628 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
9629 {
9630         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
9631         struct nlattr *tb[NL80211_ATTR_MAX + 1];
9632         struct wdev_info *wi = arg;
9633
9634         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
9635                   genlmsg_attrlen(gnlh, 0), NULL);
9636         if (tb[NL80211_ATTR_WDEV]) {
9637                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
9638                 wi->wdev_id_set = 1;
9639         }
9640
9641         if (tb[NL80211_ATTR_MAC])
9642                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
9643                           ETH_ALEN);
9644
9645         return NL_SKIP;
9646 }
9647
9648
9649 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
9650                                      const char *ifname, const u8 *addr,
9651                                      void *bss_ctx, void **drv_priv,
9652                                      char *force_ifname, u8 *if_addr,
9653                                      const char *bridge, int use_existing)
9654 {
9655         enum nl80211_iftype nlmode;
9656         struct i802_bss *bss = priv;
9657         struct wpa_driver_nl80211_data *drv = bss->drv;
9658         int ifidx;
9659         int added = 1;
9660
9661         if (addr)
9662                 os_memcpy(if_addr, addr, ETH_ALEN);
9663         nlmode = wpa_driver_nl80211_if_type(type);
9664         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
9665                 struct wdev_info p2pdev_info;
9666
9667                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
9668                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
9669                                              0, nl80211_wdev_handler,
9670                                              &p2pdev_info, use_existing);
9671                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
9672                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
9673                                    ifname);
9674                         return -1;
9675                 }
9676
9677                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
9678                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
9679                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
9680                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
9681                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
9682                            ifname,
9683                            (long long unsigned int) p2pdev_info.wdev_id);
9684         } else {
9685                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
9686                                              0, NULL, NULL, use_existing);
9687                 if (use_existing && ifidx == -ENFILE) {
9688                         added = 0;
9689                         ifidx = if_nametoindex(ifname);
9690                 } else if (ifidx < 0) {
9691                         return -1;
9692                 }
9693         }
9694
9695         if (!addr) {
9696                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
9697                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
9698                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
9699                                             bss->ifname, if_addr) < 0) {
9700                         if (added)
9701                                 nl80211_remove_iface(drv, ifidx);
9702                         return -1;
9703                 }
9704         }
9705
9706 #ifdef CONFIG_P2P
9707         if (!addr &&
9708             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
9709              type == WPA_IF_P2P_GO)) {
9710                 /* Enforce unique P2P Interface Address */
9711                 u8 new_addr[ETH_ALEN];
9712
9713                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
9714                                        new_addr) < 0) {
9715                         nl80211_remove_iface(drv, ifidx);
9716                         return -1;
9717                 }
9718                 if (nl80211_addr_in_use(drv->global, new_addr)) {
9719                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
9720                                    "for P2P group interface");
9721                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
9722                                 nl80211_remove_iface(drv, ifidx);
9723                                 return -1;
9724                         }
9725                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
9726                                                new_addr) < 0) {
9727                                 nl80211_remove_iface(drv, ifidx);
9728                                 return -1;
9729                         }
9730                 }
9731                 os_memcpy(if_addr, new_addr, ETH_ALEN);
9732         }
9733 #endif /* CONFIG_P2P */
9734
9735         if (type == WPA_IF_AP_BSS) {
9736                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
9737                 if (new_bss == NULL) {
9738                         if (added)
9739                                 nl80211_remove_iface(drv, ifidx);
9740                         return -1;
9741                 }
9742
9743                 if (bridge &&
9744                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
9745                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
9746                                    "interface %s to a bridge %s",
9747                                    ifname, bridge);
9748                         if (added)
9749                                 nl80211_remove_iface(drv, ifidx);
9750                         os_free(new_bss);
9751                         return -1;
9752                 }
9753
9754                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
9755                 {
9756                         nl80211_remove_iface(drv, ifidx);
9757                         os_free(new_bss);
9758                         return -1;
9759                 }
9760                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
9761                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
9762                 new_bss->ifindex = ifidx;
9763                 new_bss->drv = drv;
9764                 new_bss->next = drv->first_bss->next;
9765                 new_bss->freq = drv->first_bss->freq;
9766                 new_bss->ctx = bss_ctx;
9767                 new_bss->added_if = added;
9768                 drv->first_bss->next = new_bss;
9769                 if (drv_priv)
9770                         *drv_priv = new_bss;
9771                 nl80211_init_bss(new_bss);
9772
9773                 /* Subscribe management frames for this WPA_IF_AP_BSS */
9774                 if (nl80211_setup_ap(new_bss))
9775                         return -1;
9776         }
9777
9778         if (drv->global)
9779                 drv->global->if_add_ifindex = ifidx;
9780
9781         return 0;
9782 }
9783
9784
9785 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
9786                                         enum wpa_driver_if_type type,
9787                                         const char *ifname)
9788 {
9789         struct wpa_driver_nl80211_data *drv = bss->drv;
9790         int ifindex = if_nametoindex(ifname);
9791
9792         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
9793                    __func__, type, ifname, ifindex, bss->added_if);
9794         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
9795                 nl80211_remove_iface(drv, ifindex);
9796
9797         if (type != WPA_IF_AP_BSS)
9798                 return 0;
9799
9800         if (bss->added_if_into_bridge) {
9801                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
9802                                     bss->ifname) < 0)
9803                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
9804                                    "interface %s from bridge %s: %s",
9805                                    bss->ifname, bss->brname, strerror(errno));
9806         }
9807         if (bss->added_bridge) {
9808                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
9809                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
9810                                    "bridge %s: %s",
9811                                    bss->brname, strerror(errno));
9812         }
9813
9814         if (bss != drv->first_bss) {
9815                 struct i802_bss *tbss;
9816
9817                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
9818                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
9819                         if (tbss->next == bss) {
9820                                 tbss->next = bss->next;
9821                                 /* Unsubscribe management frames */
9822                                 nl80211_teardown_ap(bss);
9823                                 nl80211_destroy_bss(bss);
9824                                 os_free(bss);
9825                                 bss = NULL;
9826                                 break;
9827                         }
9828                 }
9829                 if (bss)
9830                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
9831                                    "BSS %p in the list", __func__, bss);
9832         } else {
9833                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
9834                 nl80211_teardown_ap(bss);
9835                 if (!bss->added_if && !drv->first_bss->next)
9836                         wpa_driver_nl80211_del_beacon(drv);
9837                 nl80211_destroy_bss(bss);
9838                 if (!bss->added_if)
9839                         i802_set_iface_flags(bss, 0);
9840                 if (drv->first_bss->next) {
9841                         drv->first_bss = drv->first_bss->next;
9842                         drv->ctx = drv->first_bss->ctx;
9843                         os_free(bss);
9844                 } else {
9845                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
9846                 }
9847         }
9848
9849         return 0;
9850 }
9851
9852
9853 static int cookie_handler(struct nl_msg *msg, void *arg)
9854 {
9855         struct nlattr *tb[NL80211_ATTR_MAX + 1];
9856         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
9857         u64 *cookie = arg;
9858         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
9859                   genlmsg_attrlen(gnlh, 0), NULL);
9860         if (tb[NL80211_ATTR_COOKIE])
9861                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
9862         return NL_SKIP;
9863 }
9864
9865
9866 static int nl80211_send_frame_cmd(struct i802_bss *bss,
9867                                   unsigned int freq, unsigned int wait,
9868                                   const u8 *buf, size_t buf_len,
9869                                   u64 *cookie_out, int no_cck, int no_ack,
9870                                   int offchanok)
9871 {
9872         struct wpa_driver_nl80211_data *drv = bss->drv;
9873         struct nl_msg *msg;
9874         u64 cookie;
9875         int ret = -1;
9876
9877         msg = nlmsg_alloc();
9878         if (!msg)
9879                 return -1;
9880
9881         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
9882                    "no_ack=%d offchanok=%d",
9883                    freq, wait, no_cck, no_ack, offchanok);
9884         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
9885         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
9886
9887         if (nl80211_set_iface_id(msg, bss) < 0)
9888                 goto nla_put_failure;
9889         if (freq)
9890                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
9891         if (wait)
9892                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
9893         if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX))
9894                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
9895         if (no_cck)
9896                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
9897         if (no_ack)
9898                 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
9899
9900         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
9901
9902         cookie = 0;
9903         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
9904         msg = NULL;
9905         if (ret) {
9906                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
9907                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
9908                            freq, wait);
9909                 goto nla_put_failure;
9910         }
9911         wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
9912                    "cookie 0x%llx", no_ack ? " (no ACK)" : "",
9913                    (long long unsigned int) cookie);
9914
9915         if (cookie_out)
9916                 *cookie_out = no_ack ? (u64) -1 : cookie;
9917
9918 nla_put_failure:
9919         nlmsg_free(msg);
9920         return ret;
9921 }
9922
9923
9924 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
9925                                           unsigned int freq,
9926                                           unsigned int wait_time,
9927                                           const u8 *dst, const u8 *src,
9928                                           const u8 *bssid,
9929                                           const u8 *data, size_t data_len,
9930                                           int no_cck)
9931 {
9932         struct wpa_driver_nl80211_data *drv = bss->drv;
9933         int ret = -1;
9934         u8 *buf;
9935         struct ieee80211_hdr *hdr;
9936
9937         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
9938                    "freq=%u MHz wait=%d ms no_cck=%d)",
9939                    drv->ifindex, freq, wait_time, no_cck);
9940
9941         buf = os_zalloc(24 + data_len);
9942         if (buf == NULL)
9943                 return ret;
9944         os_memcpy(buf + 24, data, data_len);
9945         hdr = (struct ieee80211_hdr *) buf;
9946         hdr->frame_control =
9947                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
9948         os_memcpy(hdr->addr1, dst, ETH_ALEN);
9949         os_memcpy(hdr->addr2, src, ETH_ALEN);
9950         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
9951
9952         if (is_ap_interface(drv->nlmode) &&
9953             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
9954              (int) freq == bss->freq || drv->device_ap_sme ||
9955              !drv->use_monitor))
9956                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
9957                                                    0, freq, no_cck, 1,
9958                                                    wait_time);
9959         else
9960                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
9961                                              24 + data_len,
9962                                              &drv->send_action_cookie,
9963                                              no_cck, 0, 1);
9964
9965         os_free(buf);
9966         return ret;
9967 }
9968
9969
9970 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
9971 {
9972         struct i802_bss *bss = priv;
9973         struct wpa_driver_nl80211_data *drv = bss->drv;
9974         struct nl_msg *msg;
9975         int ret;
9976
9977         msg = nlmsg_alloc();
9978         if (!msg)
9979                 return;
9980
9981         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
9982                    (long long unsigned int) drv->send_action_cookie);
9983         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
9984
9985         if (nl80211_set_iface_id(msg, bss) < 0)
9986                 goto nla_put_failure;
9987         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
9988
9989         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9990         msg = NULL;
9991         if (ret)
9992                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
9993                            "(%s)", ret, strerror(-ret));
9994
9995  nla_put_failure:
9996         nlmsg_free(msg);
9997 }
9998
9999
10000 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
10001                                                 unsigned int duration)
10002 {
10003         struct i802_bss *bss = priv;
10004         struct wpa_driver_nl80211_data *drv = bss->drv;
10005         struct nl_msg *msg;
10006         int ret;
10007         u64 cookie;
10008
10009         msg = nlmsg_alloc();
10010         if (!msg)
10011                 return -1;
10012
10013         nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
10014
10015         if (nl80211_set_iface_id(msg, bss) < 0)
10016                 goto nla_put_failure;
10017
10018         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
10019         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
10020
10021         cookie = 0;
10022         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
10023         msg = NULL;
10024         if (ret == 0) {
10025                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
10026                            "0x%llx for freq=%u MHz duration=%u",
10027                            (long long unsigned int) cookie, freq, duration);
10028                 drv->remain_on_chan_cookie = cookie;
10029                 drv->pending_remain_on_chan = 1;
10030                 return 0;
10031         }
10032         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
10033                    "(freq=%d duration=%u): %d (%s)",
10034                    freq, duration, ret, strerror(-ret));
10035 nla_put_failure:
10036         nlmsg_free(msg);
10037         return -1;
10038 }
10039
10040
10041 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
10042 {
10043         struct i802_bss *bss = priv;
10044         struct wpa_driver_nl80211_data *drv = bss->drv;
10045         struct nl_msg *msg;
10046         int ret;
10047
10048         if (!drv->pending_remain_on_chan) {
10049                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
10050                            "to cancel");
10051                 return -1;
10052         }
10053
10054         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
10055                    "0x%llx",
10056                    (long long unsigned int) drv->remain_on_chan_cookie);
10057
10058         msg = nlmsg_alloc();
10059         if (!msg)
10060                 return -1;
10061
10062         nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
10063
10064         if (nl80211_set_iface_id(msg, bss) < 0)
10065                 goto nla_put_failure;
10066
10067         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
10068
10069         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
10070         msg = NULL;
10071         if (ret == 0)
10072                 return 0;
10073         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
10074                    "%d (%s)", ret, strerror(-ret));
10075 nla_put_failure:
10076         nlmsg_free(msg);
10077         return -1;
10078 }
10079
10080
10081 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
10082 {
10083         struct wpa_driver_nl80211_data *drv = bss->drv;
10084
10085         if (!report) {
10086                 if (bss->nl_preq && drv->device_ap_sme &&
10087                     is_ap_interface(drv->nlmode)) {
10088                         /*
10089                          * Do not disable Probe Request reporting that was
10090                          * enabled in nl80211_setup_ap().
10091                          */
10092                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
10093                                    "Probe Request reporting nl_preq=%p while "
10094                                    "in AP mode", bss->nl_preq);
10095                 } else if (bss->nl_preq) {
10096                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
10097                                    "reporting nl_preq=%p", bss->nl_preq);
10098                         nl80211_destroy_eloop_handle(&bss->nl_preq);
10099                 }
10100                 return 0;
10101         }
10102
10103         if (bss->nl_preq) {
10104                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
10105                            "already on! nl_preq=%p", bss->nl_preq);
10106                 return 0;
10107         }
10108
10109         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
10110         if (bss->nl_preq == NULL)
10111                 return -1;
10112         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
10113                    "reporting nl_preq=%p", bss->nl_preq);
10114
10115         if (nl80211_register_frame(bss, bss->nl_preq,
10116                                    (WLAN_FC_TYPE_MGMT << 2) |
10117                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
10118                                    NULL, 0) < 0)
10119                 goto out_err;
10120
10121         nl80211_register_eloop_read(&bss->nl_preq,
10122                                     wpa_driver_nl80211_event_receive,
10123                                     bss->nl_cb);
10124
10125         return 0;
10126
10127  out_err:
10128         nl_destroy_handles(&bss->nl_preq);
10129         return -1;
10130 }
10131
10132
10133 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
10134                                      int ifindex, int disabled)
10135 {
10136         struct nl_msg *msg;
10137         struct nlattr *bands, *band;
10138         int ret;
10139
10140         msg = nlmsg_alloc();
10141         if (!msg)
10142                 return -1;
10143
10144         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
10145         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
10146
10147         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
10148         if (!bands)
10149                 goto nla_put_failure;
10150
10151         /*
10152          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
10153          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
10154          * rates. All 5 GHz rates are left enabled.
10155          */
10156         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
10157         if (!band)
10158                 goto nla_put_failure;
10159         if (disabled) {
10160                 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
10161                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
10162         }
10163         nla_nest_end(msg, band);
10164
10165         nla_nest_end(msg, bands);
10166
10167         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
10168         msg = NULL;
10169         if (ret) {
10170                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
10171                            "(%s)", ret, strerror(-ret));
10172         } else
10173                 drv->disabled_11b_rates = disabled;
10174
10175         return ret;
10176
10177 nla_put_failure:
10178         nlmsg_free(msg);
10179         return -1;
10180 }
10181
10182
10183 static int wpa_driver_nl80211_deinit_ap(void *priv)
10184 {
10185         struct i802_bss *bss = priv;
10186         struct wpa_driver_nl80211_data *drv = bss->drv;
10187         if (!is_ap_interface(drv->nlmode))
10188                 return -1;
10189         wpa_driver_nl80211_del_beacon(drv);
10190
10191         /*
10192          * If the P2P GO interface was dynamically added, then it is
10193          * possible that the interface change to station is not possible.
10194          */
10195         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
10196                 return 0;
10197
10198         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
10199 }
10200
10201
10202 static int wpa_driver_nl80211_stop_ap(void *priv)
10203 {
10204         struct i802_bss *bss = priv;
10205         struct wpa_driver_nl80211_data *drv = bss->drv;
10206         if (!is_ap_interface(drv->nlmode))
10207                 return -1;
10208         wpa_driver_nl80211_del_beacon(drv);
10209         bss->beacon_set = 0;
10210         return 0;
10211 }
10212
10213
10214 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
10215 {
10216         struct i802_bss *bss = priv;
10217         struct wpa_driver_nl80211_data *drv = bss->drv;
10218         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
10219                 return -1;
10220
10221         /*
10222          * If the P2P Client interface was dynamically added, then it is
10223          * possible that the interface change to station is not possible.
10224          */
10225         if (bss->if_dynamic)
10226                 return 0;
10227
10228         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
10229 }
10230
10231
10232 static void wpa_driver_nl80211_resume(void *priv)
10233 {
10234         struct i802_bss *bss = priv;
10235
10236         if (i802_set_iface_flags(bss, 1))
10237                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
10238 }
10239
10240
10241 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
10242                                   const u8 *ies, size_t ies_len)
10243 {
10244         struct i802_bss *bss = priv;
10245         struct wpa_driver_nl80211_data *drv = bss->drv;
10246         int ret;
10247         u8 *data, *pos;
10248         size_t data_len;
10249         const u8 *own_addr = bss->addr;
10250
10251         if (action != 1) {
10252                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
10253                            "action %d", action);
10254                 return -1;
10255         }
10256
10257         /*
10258          * Action frame payload:
10259          * Category[1] = 6 (Fast BSS Transition)
10260          * Action[1] = 1 (Fast BSS Transition Request)
10261          * STA Address
10262          * Target AP Address
10263          * FT IEs
10264          */
10265
10266         data_len = 2 + 2 * ETH_ALEN + ies_len;
10267         data = os_malloc(data_len);
10268         if (data == NULL)
10269                 return -1;
10270         pos = data;
10271         *pos++ = 0x06; /* FT Action category */
10272         *pos++ = action;
10273         os_memcpy(pos, own_addr, ETH_ALEN);
10274         pos += ETH_ALEN;
10275         os_memcpy(pos, target_ap, ETH_ALEN);
10276         pos += ETH_ALEN;
10277         os_memcpy(pos, ies, ies_len);
10278
10279         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
10280                                              drv->bssid, own_addr, drv->bssid,
10281                                              data, data_len, 0);
10282         os_free(data);
10283
10284         return ret;
10285 }
10286
10287
10288 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
10289 {
10290         struct i802_bss *bss = priv;
10291         struct wpa_driver_nl80211_data *drv = bss->drv;
10292         struct nl_msg *msg;
10293         struct nlattr *cqm;
10294         int ret = -1;
10295
10296         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
10297                    "hysteresis=%d", threshold, hysteresis);
10298
10299         msg = nlmsg_alloc();
10300         if (!msg)
10301                 return -1;
10302
10303         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
10304
10305         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
10306
10307         cqm = nla_nest_start(msg, NL80211_ATTR_CQM);
10308         if (cqm == NULL)
10309                 goto nla_put_failure;
10310
10311         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
10312         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
10313         nla_nest_end(msg, cqm);
10314
10315         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
10316         msg = NULL;
10317
10318 nla_put_failure:
10319         nlmsg_free(msg);
10320         return ret;
10321 }
10322
10323
10324 static int get_channel_width(struct nl_msg *msg, void *arg)
10325 {
10326         struct nlattr *tb[NL80211_ATTR_MAX + 1];
10327         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
10328         struct wpa_signal_info *sig_change = arg;
10329
10330         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
10331                   genlmsg_attrlen(gnlh, 0), NULL);
10332
10333         sig_change->center_frq1 = -1;
10334         sig_change->center_frq2 = -1;
10335         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
10336
10337         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
10338                 sig_change->chanwidth = convert2width(
10339                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
10340                 if (tb[NL80211_ATTR_CENTER_FREQ1])
10341                         sig_change->center_frq1 =
10342                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
10343                 if (tb[NL80211_ATTR_CENTER_FREQ2])
10344                         sig_change->center_frq2 =
10345                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
10346         }
10347
10348         return NL_SKIP;
10349 }
10350
10351
10352 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
10353                                      struct wpa_signal_info *sig)
10354 {
10355         struct nl_msg *msg;
10356
10357         msg = nlmsg_alloc();
10358         if (!msg)
10359                 return -ENOMEM;
10360
10361         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_INTERFACE);
10362         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
10363
10364         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
10365
10366 nla_put_failure:
10367         nlmsg_free(msg);
10368         return -ENOBUFS;
10369 }
10370
10371
10372 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
10373 {
10374         struct i802_bss *bss = priv;
10375         struct wpa_driver_nl80211_data *drv = bss->drv;
10376         int res;
10377
10378         os_memset(si, 0, sizeof(*si));
10379         res = nl80211_get_link_signal(drv, si);
10380         if (res != 0)
10381                 return res;
10382
10383         res = nl80211_get_channel_width(drv, si);
10384         if (res != 0)
10385                 return res;
10386
10387         return nl80211_get_link_noise(drv, si);
10388 }
10389
10390
10391 static int wpa_driver_nl80211_shared_freq(void *priv)
10392 {
10393         struct i802_bss *bss = priv;
10394         struct wpa_driver_nl80211_data *drv = bss->drv;
10395         struct wpa_driver_nl80211_data *driver;
10396         int freq = 0;
10397
10398         /*
10399          * If the same PHY is in connected state with some other interface,
10400          * then retrieve the assoc freq.
10401          */
10402         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
10403                    drv->phyname);
10404
10405         dl_list_for_each(driver, &drv->global->interfaces,
10406                          struct wpa_driver_nl80211_data, list) {
10407                 if (drv == driver ||
10408                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
10409                     !driver->associated)
10410                         continue;
10411
10412                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
10413                            MACSTR,
10414                            driver->phyname, driver->first_bss->ifname,
10415                            MAC2STR(driver->first_bss->addr));
10416                 if (is_ap_interface(driver->nlmode))
10417                         freq = driver->first_bss->freq;
10418                 else
10419                         freq = nl80211_get_assoc_freq(driver);
10420                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
10421                            drv->phyname, freq);
10422         }
10423
10424         if (!freq)
10425                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
10426                            "PHY (%s) in associated state", drv->phyname);
10427
10428         return freq;
10429 }
10430
10431
10432 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
10433                               int encrypt)
10434 {
10435         struct i802_bss *bss = priv;
10436         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
10437                                              0, 0, 0, 0);
10438 }
10439
10440
10441 static int nl80211_set_param(void *priv, const char *param)
10442 {
10443         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
10444         if (param == NULL)
10445                 return 0;
10446
10447 #ifdef CONFIG_P2P
10448         if (os_strstr(param, "use_p2p_group_interface=1")) {
10449                 struct i802_bss *bss = priv;
10450                 struct wpa_driver_nl80211_data *drv = bss->drv;
10451
10452                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
10453                            "interface");
10454                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
10455                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
10456         }
10457
10458         if (os_strstr(param, "p2p_device=1")) {
10459                 struct i802_bss *bss = priv;
10460                 struct wpa_driver_nl80211_data *drv = bss->drv;
10461                 drv->allow_p2p_device = 1;
10462         }
10463 #endif /* CONFIG_P2P */
10464
10465         if (os_strstr(param, "use_monitor=1")) {
10466                 struct i802_bss *bss = priv;
10467                 struct wpa_driver_nl80211_data *drv = bss->drv;
10468                 drv->use_monitor = 1;
10469         }
10470
10471         if (os_strstr(param, "force_connect_cmd=1")) {
10472                 struct i802_bss *bss = priv;
10473                 struct wpa_driver_nl80211_data *drv = bss->drv;
10474                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
10475         }
10476
10477         return 0;
10478 }
10479
10480
10481 static void * nl80211_global_init(void)
10482 {
10483         struct nl80211_global *global;
10484         struct netlink_config *cfg;
10485
10486         global = os_zalloc(sizeof(*global));
10487         if (global == NULL)
10488                 return NULL;
10489         global->ioctl_sock = -1;
10490         dl_list_init(&global->interfaces);
10491         global->if_add_ifindex = -1;
10492
10493         cfg = os_zalloc(sizeof(*cfg));
10494         if (cfg == NULL)
10495                 goto err;
10496
10497         cfg->ctx = global;
10498         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
10499         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
10500         global->netlink = netlink_init(cfg);
10501         if (global->netlink == NULL) {
10502                 os_free(cfg);
10503                 goto err;
10504         }
10505
10506         if (wpa_driver_nl80211_init_nl_global(global) < 0)
10507                 goto err;
10508
10509         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
10510         if (global->ioctl_sock < 0) {
10511                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
10512                            strerror(errno));
10513                 goto err;
10514         }
10515
10516         return global;
10517
10518 err:
10519         nl80211_global_deinit(global);
10520         return NULL;
10521 }
10522
10523
10524 static void nl80211_global_deinit(void *priv)
10525 {
10526         struct nl80211_global *global = priv;
10527         if (global == NULL)
10528                 return;
10529         if (!dl_list_empty(&global->interfaces)) {
10530                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
10531                            "nl80211_global_deinit",
10532                            dl_list_len(&global->interfaces));
10533         }
10534
10535         if (global->netlink)
10536                 netlink_deinit(global->netlink);
10537
10538         nl_destroy_handles(&global->nl);
10539
10540         if (global->nl_event)
10541                 nl80211_destroy_eloop_handle(&global->nl_event);
10542
10543         nl_cb_put(global->nl_cb);
10544
10545         if (global->ioctl_sock >= 0)
10546                 close(global->ioctl_sock);
10547
10548         os_free(global);
10549 }
10550
10551
10552 static const char * nl80211_get_radio_name(void *priv)
10553 {
10554         struct i802_bss *bss = priv;
10555         struct wpa_driver_nl80211_data *drv = bss->drv;
10556         return drv->phyname;
10557 }
10558
10559
10560 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
10561                          const u8 *pmkid)
10562 {
10563         struct nl_msg *msg;
10564
10565         msg = nlmsg_alloc();
10566         if (!msg)
10567                 return -ENOMEM;
10568
10569         nl80211_cmd(bss->drv, msg, 0, cmd);
10570
10571         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
10572         if (pmkid)
10573                 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
10574         if (bssid)
10575                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
10576
10577         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
10578  nla_put_failure:
10579         nlmsg_free(msg);
10580         return -ENOBUFS;
10581 }
10582
10583
10584 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
10585 {
10586         struct i802_bss *bss = priv;
10587         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
10588         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
10589 }
10590
10591
10592 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
10593 {
10594         struct i802_bss *bss = priv;
10595         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
10596                    MAC2STR(bssid));
10597         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
10598 }
10599
10600
10601 static int nl80211_flush_pmkid(void *priv)
10602 {
10603         struct i802_bss *bss = priv;
10604         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
10605         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
10606 }
10607
10608
10609 static void clean_survey_results(struct survey_results *survey_results)
10610 {
10611         struct freq_survey *survey, *tmp;
10612
10613         if (dl_list_empty(&survey_results->survey_list))
10614                 return;
10615
10616         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
10617                               struct freq_survey, list) {
10618                 dl_list_del(&survey->list);
10619                 os_free(survey);
10620         }
10621 }
10622
10623
10624 static void add_survey(struct nlattr **sinfo, u32 ifidx,
10625                        struct dl_list *survey_list)
10626 {
10627         struct freq_survey *survey;
10628
10629         survey = os_zalloc(sizeof(struct freq_survey));
10630         if  (!survey)
10631                 return;
10632
10633         survey->ifidx = ifidx;
10634         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
10635         survey->filled = 0;
10636
10637         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
10638                 survey->nf = (int8_t)
10639                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
10640                 survey->filled |= SURVEY_HAS_NF;
10641         }
10642
10643         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
10644                 survey->channel_time =
10645                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
10646                 survey->filled |= SURVEY_HAS_CHAN_TIME;
10647         }
10648
10649         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
10650                 survey->channel_time_busy =
10651                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
10652                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
10653         }
10654
10655         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
10656                 survey->channel_time_rx =
10657                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
10658                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
10659         }
10660
10661         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
10662                 survey->channel_time_tx =
10663                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
10664                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
10665         }
10666
10667         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)",
10668                    survey->freq,
10669                    survey->nf,
10670                    (unsigned long int) survey->channel_time,
10671                    (unsigned long int) survey->channel_time_busy,
10672                    (unsigned long int) survey->channel_time_tx,
10673                    (unsigned long int) survey->channel_time_rx,
10674                    survey->filled);
10675
10676         dl_list_add_tail(survey_list, &survey->list);
10677 }
10678
10679
10680 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
10681                            unsigned int freq_filter)
10682 {
10683         if (!freq_filter)
10684                 return 1;
10685
10686         return freq_filter == surveyed_freq;
10687 }
10688
10689
10690 static int survey_handler(struct nl_msg *msg, void *arg)
10691 {
10692         struct nlattr *tb[NL80211_ATTR_MAX + 1];
10693         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
10694         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
10695         struct survey_results *survey_results;
10696         u32 surveyed_freq = 0;
10697         u32 ifidx;
10698
10699         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
10700                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
10701                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
10702         };
10703
10704         survey_results = (struct survey_results *) arg;
10705
10706         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
10707                   genlmsg_attrlen(gnlh, 0), NULL);
10708
10709         if (!tb[NL80211_ATTR_IFINDEX])
10710                 return NL_SKIP;
10711
10712         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
10713
10714         if (!tb[NL80211_ATTR_SURVEY_INFO])
10715                 return NL_SKIP;
10716
10717         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
10718                              tb[NL80211_ATTR_SURVEY_INFO],
10719                              survey_policy))
10720                 return NL_SKIP;
10721
10722         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
10723                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
10724                 return NL_SKIP;
10725         }
10726
10727         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
10728
10729         if (!check_survey_ok(sinfo, surveyed_freq,
10730                              survey_results->freq_filter))
10731                 return NL_SKIP;
10732
10733         if (survey_results->freq_filter &&
10734             survey_results->freq_filter != surveyed_freq) {
10735                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
10736                            surveyed_freq);
10737                 return NL_SKIP;
10738         }
10739
10740         add_survey(sinfo, ifidx, &survey_results->survey_list);
10741
10742         return NL_SKIP;
10743 }
10744
10745
10746 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
10747 {
10748         struct i802_bss *bss = priv;
10749         struct wpa_driver_nl80211_data *drv = bss->drv;
10750         struct nl_msg *msg;
10751         int err = -ENOBUFS;
10752         union wpa_event_data data;
10753         struct survey_results *survey_results;
10754
10755         os_memset(&data, 0, sizeof(data));
10756         survey_results = &data.survey_results;
10757
10758         dl_list_init(&survey_results->survey_list);
10759
10760         msg = nlmsg_alloc();
10761         if (!msg)
10762                 goto nla_put_failure;
10763
10764         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
10765
10766         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
10767
10768         if (freq)
10769                 data.survey_results.freq_filter = freq;
10770
10771         do {
10772                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
10773                 err = send_and_recv_msgs(drv, msg, survey_handler,
10774                                          survey_results);
10775         } while (err > 0);
10776
10777         if (err) {
10778                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
10779                 goto out_clean;
10780         }
10781
10782         wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
10783
10784 out_clean:
10785         clean_survey_results(survey_results);
10786 nla_put_failure:
10787         return err;
10788 }
10789
10790
10791 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
10792                                    const u8 *replay_ctr)
10793 {
10794         struct i802_bss *bss = priv;
10795         struct wpa_driver_nl80211_data *drv = bss->drv;
10796         struct nlattr *replay_nested;
10797         struct nl_msg *msg;
10798
10799         msg = nlmsg_alloc();
10800         if (!msg)
10801                 return;
10802
10803         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10804
10805         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
10806
10807         replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10808         if (!replay_nested)
10809                 goto nla_put_failure;
10810
10811         NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
10812         NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
10813         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
10814                 replay_ctr);
10815
10816         nla_nest_end(msg, replay_nested);
10817
10818         send_and_recv_msgs(drv, msg, NULL, NULL);
10819         return;
10820  nla_put_failure:
10821         nlmsg_free(msg);
10822 }
10823
10824
10825 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
10826                                     const u8 *addr, int qos)
10827 {
10828         /* send data frame to poll STA and check whether
10829          * this frame is ACKed */
10830         struct {
10831                 struct ieee80211_hdr hdr;
10832                 u16 qos_ctl;
10833         } STRUCT_PACKED nulldata;
10834         size_t size;
10835
10836         /* Send data frame to poll STA and check whether this frame is ACKed */
10837
10838         os_memset(&nulldata, 0, sizeof(nulldata));
10839
10840         if (qos) {
10841                 nulldata.hdr.frame_control =
10842                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
10843                                      WLAN_FC_STYPE_QOS_NULL);
10844                 size = sizeof(nulldata);
10845         } else {
10846                 nulldata.hdr.frame_control =
10847                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
10848                                      WLAN_FC_STYPE_NULLFUNC);
10849                 size = sizeof(struct ieee80211_hdr);
10850         }
10851
10852         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
10853         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
10854         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
10855         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
10856
10857         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
10858                                          0, 0) < 0)
10859                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
10860                            "send poll frame");
10861 }
10862
10863 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
10864                                 int qos)
10865 {
10866         struct i802_bss *bss = priv;
10867         struct wpa_driver_nl80211_data *drv = bss->drv;
10868         struct nl_msg *msg;
10869
10870         if (!drv->poll_command_supported) {
10871                 nl80211_send_null_frame(bss, own_addr, addr, qos);
10872                 return;
10873         }
10874
10875         msg = nlmsg_alloc();
10876         if (!msg)
10877                 return;
10878
10879         nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
10880
10881         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
10882         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
10883
10884         send_and_recv_msgs(drv, msg, NULL, NULL);
10885         return;
10886  nla_put_failure:
10887         nlmsg_free(msg);
10888 }
10889
10890
10891 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
10892 {
10893         struct nl_msg *msg;
10894
10895         msg = nlmsg_alloc();
10896         if (!msg)
10897                 return -ENOMEM;
10898
10899         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
10900         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
10901         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
10902                     enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
10903         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
10904 nla_put_failure:
10905         nlmsg_free(msg);
10906         return -ENOBUFS;
10907 }
10908
10909
10910 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
10911                                      int ctwindow)
10912 {
10913         struct i802_bss *bss = priv;
10914
10915         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
10916                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
10917
10918         if (opp_ps != -1 || ctwindow != -1) {
10919 #ifdef ANDROID_P2P
10920                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
10921 #else /* ANDROID_P2P */
10922                 return -1; /* Not yet supported */
10923 #endif /* ANDROID_P2P */
10924         }
10925
10926         if (legacy_ps == -1)
10927                 return 0;
10928         if (legacy_ps != 0 && legacy_ps != 1)
10929                 return -1; /* Not yet supported */
10930
10931         return nl80211_set_power_save(bss, legacy_ps);
10932 }
10933
10934
10935 static int nl80211_start_radar_detection(void *priv,
10936                                          struct hostapd_freq_params *freq)
10937 {
10938         struct i802_bss *bss = priv;
10939         struct wpa_driver_nl80211_data *drv = bss->drv;
10940         struct nl_msg *msg;
10941         int ret;
10942
10943         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)",
10944                    freq->freq, freq->ht_enabled, freq->vht_enabled,
10945                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
10946
10947         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
10948                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
10949                            "detection");
10950                 return -1;
10951         }
10952
10953         msg = nlmsg_alloc();
10954         if (!msg)
10955                 return -1;
10956
10957         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_RADAR_DETECT);
10958         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
10959         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
10960
10961         if (freq->vht_enabled) {
10962                 switch (freq->bandwidth) {
10963                 case 20:
10964                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10965                                     NL80211_CHAN_WIDTH_20);
10966                         break;
10967                 case 40:
10968                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10969                                     NL80211_CHAN_WIDTH_40);
10970                         break;
10971                 case 80:
10972                         if (freq->center_freq2)
10973                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10974                                             NL80211_CHAN_WIDTH_80P80);
10975                         else
10976                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10977                                             NL80211_CHAN_WIDTH_80);
10978                         break;
10979                 case 160:
10980                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
10981                                     NL80211_CHAN_WIDTH_160);
10982                         break;
10983                 default:
10984                         return -1;
10985                 }
10986                 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1);
10987                 if (freq->center_freq2)
10988                         NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2,
10989                                     freq->center_freq2);
10990         } else if (freq->ht_enabled) {
10991                 switch (freq->sec_channel_offset) {
10992                 case -1:
10993                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10994                                     NL80211_CHAN_HT40MINUS);
10995                         break;
10996                 case 1:
10997                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10998                                     NL80211_CHAN_HT40PLUS);
10999                         break;
11000                 default:
11001                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11002                                     NL80211_CHAN_HT20);
11003                         break;
11004                 }
11005         }
11006
11007         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
11008         if (ret == 0)
11009                 return 0;
11010         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
11011                    "%d (%s)", ret, strerror(-ret));
11012 nla_put_failure:
11013         return -1;
11014 }
11015
11016 #ifdef CONFIG_TDLS
11017
11018 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
11019                                   u8 dialog_token, u16 status_code,
11020                                   const u8 *buf, size_t len)
11021 {
11022         struct i802_bss *bss = priv;
11023         struct wpa_driver_nl80211_data *drv = bss->drv;
11024         struct nl_msg *msg;
11025
11026         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
11027                 return -EOPNOTSUPP;
11028
11029         if (!dst)
11030                 return -EINVAL;
11031
11032         msg = nlmsg_alloc();
11033         if (!msg)
11034                 return -ENOMEM;
11035
11036         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
11037         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11038         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
11039         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
11040         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
11041         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
11042         NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
11043
11044         return send_and_recv_msgs(drv, msg, NULL, NULL);
11045
11046 nla_put_failure:
11047         nlmsg_free(msg);
11048         return -ENOBUFS;
11049 }
11050
11051
11052 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
11053 {
11054         struct i802_bss *bss = priv;
11055         struct wpa_driver_nl80211_data *drv = bss->drv;
11056         struct nl_msg *msg;
11057         enum nl80211_tdls_operation nl80211_oper;
11058
11059         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
11060                 return -EOPNOTSUPP;
11061
11062         switch (oper) {
11063         case TDLS_DISCOVERY_REQ:
11064                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
11065                 break;
11066         case TDLS_SETUP:
11067                 nl80211_oper = NL80211_TDLS_SETUP;
11068                 break;
11069         case TDLS_TEARDOWN:
11070                 nl80211_oper = NL80211_TDLS_TEARDOWN;
11071                 break;
11072         case TDLS_ENABLE_LINK:
11073                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
11074                 break;
11075         case TDLS_DISABLE_LINK:
11076                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
11077                 break;
11078         case TDLS_ENABLE:
11079                 return 0;
11080         case TDLS_DISABLE:
11081                 return 0;
11082         default:
11083                 return -EINVAL;
11084         }
11085
11086         msg = nlmsg_alloc();
11087         if (!msg)
11088                 return -ENOMEM;
11089
11090         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
11091         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
11092         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11093         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
11094
11095         return send_and_recv_msgs(drv, msg, NULL, NULL);
11096
11097 nla_put_failure:
11098         nlmsg_free(msg);
11099         return -ENOBUFS;
11100 }
11101
11102 #endif /* CONFIG TDLS */
11103
11104
11105 #ifdef ANDROID
11106
11107 typedef struct android_wifi_priv_cmd {
11108         char *buf;
11109         int used_len;
11110         int total_len;
11111 } android_wifi_priv_cmd;
11112
11113 static int drv_errors = 0;
11114
11115 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv)
11116 {
11117         drv_errors++;
11118         if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
11119                 drv_errors = 0;
11120                 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
11121         }
11122 }
11123
11124
11125 static int android_priv_cmd(struct i802_bss *bss, const char *cmd)
11126 {
11127         struct wpa_driver_nl80211_data *drv = bss->drv;
11128         struct ifreq ifr;
11129         android_wifi_priv_cmd priv_cmd;
11130         char buf[MAX_DRV_CMD_SIZE];
11131         int ret;
11132
11133         os_memset(&ifr, 0, sizeof(ifr));
11134         os_memset(&priv_cmd, 0, sizeof(priv_cmd));
11135         os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
11136
11137         os_memset(buf, 0, sizeof(buf));
11138         os_strlcpy(buf, cmd, sizeof(buf));
11139
11140         priv_cmd.buf = buf;
11141         priv_cmd.used_len = sizeof(buf);
11142         priv_cmd.total_len = sizeof(buf);
11143         ifr.ifr_data = &priv_cmd;
11144
11145         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
11146         if (ret < 0) {
11147                 wpa_printf(MSG_ERROR, "%s: failed to issue private commands",
11148                            __func__);
11149                 wpa_driver_send_hang_msg(drv);
11150                 return ret;
11151         }
11152
11153         drv_errors = 0;
11154         return 0;
11155 }
11156
11157
11158 static int android_pno_start(struct i802_bss *bss,
11159                              struct wpa_driver_scan_params *params)
11160 {
11161         struct wpa_driver_nl80211_data *drv = bss->drv;
11162         struct ifreq ifr;
11163         android_wifi_priv_cmd priv_cmd;
11164         int ret = 0, i = 0, bp;
11165         char buf[WEXT_PNO_MAX_COMMAND_SIZE];
11166
11167         bp = WEXT_PNOSETUP_HEADER_SIZE;
11168         os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp);
11169         buf[bp++] = WEXT_PNO_TLV_PREFIX;
11170         buf[bp++] = WEXT_PNO_TLV_VERSION;
11171         buf[bp++] = WEXT_PNO_TLV_SUBVERSION;
11172         buf[bp++] = WEXT_PNO_TLV_RESERVED;
11173
11174         while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) {
11175                 /* Check that there is enough space needed for 1 more SSID, the
11176                  * other sections and null termination */
11177                 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN +
11178                      WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf))
11179                         break;
11180                 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan",
11181                                   params->ssids[i].ssid,
11182                                   params->ssids[i].ssid_len);
11183                 buf[bp++] = WEXT_PNO_SSID_SECTION;
11184                 buf[bp++] = params->ssids[i].ssid_len;
11185                 os_memcpy(&buf[bp], params->ssids[i].ssid,
11186                           params->ssids[i].ssid_len);
11187                 bp += params->ssids[i].ssid_len;
11188                 i++;
11189         }
11190
11191         buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION;
11192         os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x",
11193                     WEXT_PNO_SCAN_INTERVAL);
11194         bp += WEXT_PNO_SCAN_INTERVAL_LENGTH;
11195
11196         buf[bp++] = WEXT_PNO_REPEAT_SECTION;
11197         os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x",
11198                     WEXT_PNO_REPEAT);
11199         bp += WEXT_PNO_REPEAT_LENGTH;
11200
11201         buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION;
11202         os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x",
11203                     WEXT_PNO_MAX_REPEAT);
11204         bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1;
11205
11206         memset(&ifr, 0, sizeof(ifr));
11207         memset(&priv_cmd, 0, sizeof(priv_cmd));
11208         os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
11209
11210         priv_cmd.buf = buf;
11211         priv_cmd.used_len = bp;
11212         priv_cmd.total_len = bp;
11213         ifr.ifr_data = &priv_cmd;
11214
11215         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
11216
11217         if (ret < 0) {
11218                 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d",
11219                            ret);
11220                 wpa_driver_send_hang_msg(drv);
11221                 return ret;
11222         }
11223
11224         drv_errors = 0;
11225
11226         return android_priv_cmd(bss, "PNOFORCE 1");
11227 }
11228
11229
11230 static int android_pno_stop(struct i802_bss *bss)
11231 {
11232         return android_priv_cmd(bss, "PNOFORCE 0");
11233 }
11234
11235 #endif /* ANDROID */
11236
11237
11238 static int driver_nl80211_set_key(const char *ifname, void *priv,
11239                                   enum wpa_alg alg, const u8 *addr,
11240                                   int key_idx, int set_tx,
11241                                   const u8 *seq, size_t seq_len,
11242                                   const u8 *key, size_t key_len)
11243 {
11244         struct i802_bss *bss = priv;
11245         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
11246                                           set_tx, seq, seq_len, key, key_len);
11247 }
11248
11249
11250 static int driver_nl80211_scan2(void *priv,
11251                                 struct wpa_driver_scan_params *params)
11252 {
11253         struct i802_bss *bss = priv;
11254         return wpa_driver_nl80211_scan(bss, params);
11255 }
11256
11257
11258 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
11259                                          int reason_code)
11260 {
11261         struct i802_bss *bss = priv;
11262         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
11263 }
11264
11265
11266 static int driver_nl80211_authenticate(void *priv,
11267                                        struct wpa_driver_auth_params *params)
11268 {
11269         struct i802_bss *bss = priv;
11270         return wpa_driver_nl80211_authenticate(bss, params);
11271 }
11272
11273
11274 static void driver_nl80211_deinit(void *priv)
11275 {
11276         struct i802_bss *bss = priv;
11277         wpa_driver_nl80211_deinit(bss);
11278 }
11279
11280
11281 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
11282                                     const char *ifname)
11283 {
11284         struct i802_bss *bss = priv;
11285         return wpa_driver_nl80211_if_remove(bss, type, ifname);
11286 }
11287
11288
11289 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
11290                                     size_t data_len, int noack)
11291 {
11292         struct i802_bss *bss = priv;
11293         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
11294                                             0, 0, 0, 0);
11295 }
11296
11297
11298 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
11299 {
11300         struct i802_bss *bss = priv;
11301         return wpa_driver_nl80211_sta_remove(bss, addr);
11302 }
11303
11304
11305 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
11306                                        const char *ifname, int vlan_id)
11307 {
11308         struct i802_bss *bss = priv;
11309         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
11310 }
11311
11312
11313 static int driver_nl80211_read_sta_data(void *priv,
11314                                         struct hostap_sta_driver_data *data,
11315                                         const u8 *addr)
11316 {
11317         struct i802_bss *bss = priv;
11318         return i802_read_sta_data(bss, data, addr);
11319 }
11320
11321
11322 static int driver_nl80211_send_action(void *priv, unsigned int freq,
11323                                       unsigned int wait_time,
11324                                       const u8 *dst, const u8 *src,
11325                                       const u8 *bssid,
11326                                       const u8 *data, size_t data_len,
11327                                       int no_cck)
11328 {
11329         struct i802_bss *bss = priv;
11330         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
11331                                               bssid, data, data_len, no_cck);
11332 }
11333
11334
11335 static int driver_nl80211_probe_req_report(void *priv, int report)
11336 {
11337         struct i802_bss *bss = priv;
11338         return wpa_driver_nl80211_probe_req_report(bss, report);
11339 }
11340
11341
11342 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
11343                                             const u8 *ies, size_t ies_len)
11344 {
11345         int ret;
11346         struct nl_msg *msg;
11347         struct i802_bss *bss = priv;
11348         struct wpa_driver_nl80211_data *drv = bss->drv;
11349         u16 mdid = WPA_GET_LE16(md);
11350
11351         msg = nlmsg_alloc();
11352         if (!msg)
11353                 return -ENOMEM;
11354
11355         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
11356         nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES);
11357         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11358         NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies);
11359         NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid);
11360
11361         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
11362         if (ret) {
11363                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
11364                            "err=%d (%s)", ret, strerror(-ret));
11365         }
11366
11367         return ret;
11368
11369 nla_put_failure:
11370         nlmsg_free(msg);
11371         return -ENOBUFS;
11372 }
11373
11374
11375 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
11376 {
11377         struct i802_bss *bss = priv;
11378         struct wpa_driver_nl80211_data *drv = bss->drv;
11379
11380         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
11381                 return NULL;
11382
11383         return bss->addr;
11384 }
11385
11386
11387 static const char * scan_state_str(enum scan_states scan_state)
11388 {
11389         switch (scan_state) {
11390         case NO_SCAN:
11391                 return "NO_SCAN";
11392         case SCAN_REQUESTED:
11393                 return "SCAN_REQUESTED";
11394         case SCAN_STARTED:
11395                 return "SCAN_STARTED";
11396         case SCAN_COMPLETED:
11397                 return "SCAN_COMPLETED";
11398         case SCAN_ABORTED:
11399                 return "SCAN_ABORTED";
11400         case SCHED_SCAN_STARTED:
11401                 return "SCHED_SCAN_STARTED";
11402         case SCHED_SCAN_STOPPED:
11403                 return "SCHED_SCAN_STOPPED";
11404         case SCHED_SCAN_RESULTS:
11405                 return "SCHED_SCAN_RESULTS";
11406         }
11407
11408         return "??";
11409 }
11410
11411
11412 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
11413 {
11414         struct i802_bss *bss = priv;
11415         struct wpa_driver_nl80211_data *drv = bss->drv;
11416         int res;
11417         char *pos, *end;
11418
11419         pos = buf;
11420         end = buf + buflen;
11421
11422         res = os_snprintf(pos, end - pos,
11423                           "ifindex=%d\n"
11424                           "ifname=%s\n"
11425                           "brname=%s\n"
11426                           "addr=" MACSTR "\n"
11427                           "freq=%d\n"
11428                           "%s%s%s%s%s",
11429                           bss->ifindex,
11430                           bss->ifname,
11431                           bss->brname,
11432                           MAC2STR(bss->addr),
11433                           bss->freq,
11434                           bss->beacon_set ? "beacon_set=1\n" : "",
11435                           bss->added_if_into_bridge ?
11436                           "added_if_into_bridge=1\n" : "",
11437                           bss->added_bridge ? "added_bridge=1\n" : "",
11438                           bss->in_deinit ? "in_deinit=1\n" : "",
11439                           bss->if_dynamic ? "if_dynamic=1\n" : "");
11440         if (res < 0 || res >= end - pos)
11441                 return pos - buf;
11442         pos += res;
11443
11444         if (bss->wdev_id_set) {
11445                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
11446                                   (unsigned long long) bss->wdev_id);
11447                 if (res < 0 || res >= end - pos)
11448                         return pos - buf;
11449                 pos += res;
11450         }
11451
11452         res = os_snprintf(pos, end - pos,
11453                           "phyname=%s\n"
11454                           "drv_ifindex=%d\n"
11455                           "operstate=%d\n"
11456                           "scan_state=%s\n"
11457                           "auth_bssid=" MACSTR "\n"
11458                           "auth_attempt_bssid=" MACSTR "\n"
11459                           "bssid=" MACSTR "\n"
11460                           "prev_bssid=" MACSTR "\n"
11461                           "associated=%d\n"
11462                           "assoc_freq=%u\n"
11463                           "monitor_sock=%d\n"
11464                           "monitor_ifidx=%d\n"
11465                           "monitor_refcount=%d\n"
11466                           "last_mgmt_freq=%u\n"
11467                           "eapol_tx_sock=%d\n"
11468                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
11469                           drv->phyname,
11470                           drv->ifindex,
11471                           drv->operstate,
11472                           scan_state_str(drv->scan_state),
11473                           MAC2STR(drv->auth_bssid),
11474                           MAC2STR(drv->auth_attempt_bssid),
11475                           MAC2STR(drv->bssid),
11476                           MAC2STR(drv->prev_bssid),
11477                           drv->associated,
11478                           drv->assoc_freq,
11479                           drv->monitor_sock,
11480                           drv->monitor_ifidx,
11481                           drv->monitor_refcount,
11482                           drv->last_mgmt_freq,
11483                           drv->eapol_tx_sock,
11484                           drv->ignore_if_down_event ?
11485                           "ignore_if_down_event=1\n" : "",
11486                           drv->scan_complete_events ?
11487                           "scan_complete_events=1\n" : "",
11488                           drv->disabled_11b_rates ?
11489                           "disabled_11b_rates=1\n" : "",
11490                           drv->pending_remain_on_chan ?
11491                           "pending_remain_on_chan=1\n" : "",
11492                           drv->in_interface_list ? "in_interface_list=1\n" : "",
11493                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
11494                           drv->poll_command_supported ?
11495                           "poll_command_supported=1\n" : "",
11496                           drv->data_tx_status ? "data_tx_status=1\n" : "",
11497                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
11498                           drv->retry_auth ? "retry_auth=1\n" : "",
11499                           drv->use_monitor ? "use_monitor=1\n" : "",
11500                           drv->ignore_next_local_disconnect ?
11501                           "ignore_next_local_disconnect=1\n" : "",
11502                           drv->allow_p2p_device ? "allow_p2p_device=1\n" : "");
11503         if (res < 0 || res >= end - pos)
11504                 return pos - buf;
11505         pos += res;
11506
11507         if (drv->has_capability) {
11508                 res = os_snprintf(pos, end - pos,
11509                                   "capa.key_mgmt=0x%x\n"
11510                                   "capa.enc=0x%x\n"
11511                                   "capa.auth=0x%x\n"
11512                                   "capa.flags=0x%x\n"
11513                                   "capa.max_scan_ssids=%d\n"
11514                                   "capa.max_sched_scan_ssids=%d\n"
11515                                   "capa.sched_scan_supported=%d\n"
11516                                   "capa.max_match_sets=%d\n"
11517                                   "capa.max_remain_on_chan=%u\n"
11518                                   "capa.max_stations=%u\n"
11519                                   "capa.probe_resp_offloads=0x%x\n"
11520                                   "capa.max_acl_mac_addrs=%u\n"
11521                                   "capa.num_multichan_concurrent=%u\n",
11522                                   drv->capa.key_mgmt,
11523                                   drv->capa.enc,
11524                                   drv->capa.auth,
11525                                   drv->capa.flags,
11526                                   drv->capa.max_scan_ssids,
11527                                   drv->capa.max_sched_scan_ssids,
11528                                   drv->capa.sched_scan_supported,
11529                                   drv->capa.max_match_sets,
11530                                   drv->capa.max_remain_on_chan,
11531                                   drv->capa.max_stations,
11532                                   drv->capa.probe_resp_offloads,
11533                                   drv->capa.max_acl_mac_addrs,
11534                                   drv->capa.num_multichan_concurrent);
11535                 if (res < 0 || res >= end - pos)
11536                         return pos - buf;
11537                 pos += res;
11538         }
11539
11540         return pos - buf;
11541 }
11542
11543
11544 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
11545 {
11546         if (settings->head)
11547                 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD,
11548                         settings->head_len, settings->head);
11549
11550         if (settings->tail)
11551                 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL,
11552                         settings->tail_len, settings->tail);
11553
11554         if (settings->beacon_ies)
11555                 NLA_PUT(msg, NL80211_ATTR_IE,
11556                         settings->beacon_ies_len, settings->beacon_ies);
11557
11558         if (settings->proberesp_ies)
11559                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
11560                         settings->proberesp_ies_len, settings->proberesp_ies);
11561
11562         if (settings->assocresp_ies)
11563                 NLA_PUT(msg,
11564                         NL80211_ATTR_IE_ASSOC_RESP,
11565                         settings->assocresp_ies_len, settings->assocresp_ies);
11566
11567         if (settings->probe_resp)
11568                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP,
11569                         settings->probe_resp_len, settings->probe_resp);
11570
11571         return 0;
11572
11573 nla_put_failure:
11574         return -ENOBUFS;
11575 }
11576
11577
11578 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
11579 {
11580         struct nl_msg *msg;
11581         struct i802_bss *bss = priv;
11582         struct wpa_driver_nl80211_data *drv = bss->drv;
11583         struct nlattr *beacon_csa;
11584         int ret = -ENOBUFS;
11585
11586         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
11587                    settings->cs_count, settings->block_tx,
11588                    settings->freq_params.freq, settings->freq_params.bandwidth,
11589                    settings->freq_params.center_freq1,
11590                    settings->freq_params.center_freq2);
11591
11592         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
11593                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
11594                 return -EOPNOTSUPP;
11595         }
11596
11597         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
11598             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
11599                 return -EOPNOTSUPP;
11600
11601         /* check settings validity */
11602         if (!settings->beacon_csa.tail ||
11603             ((settings->beacon_csa.tail_len <=
11604               settings->counter_offset_beacon) ||
11605              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
11606               settings->cs_count)))
11607                 return -EINVAL;
11608
11609         if (settings->beacon_csa.probe_resp &&
11610             ((settings->beacon_csa.probe_resp_len <=
11611               settings->counter_offset_presp) ||
11612              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
11613               settings->cs_count)))
11614                 return -EINVAL;
11615
11616         msg = nlmsg_alloc();
11617         if (!msg)
11618                 return -ENOMEM;
11619
11620         nl80211_cmd(drv, msg, 0, NL80211_CMD_CHANNEL_SWITCH);
11621         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11622         NLA_PUT_U32(msg, NL80211_ATTR_CH_SWITCH_COUNT, settings->cs_count);
11623         ret = nl80211_put_freq_params(msg, &settings->freq_params);
11624         if (ret)
11625                 goto error;
11626
11627         if (settings->block_tx)
11628                 NLA_PUT_FLAG(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX);
11629
11630         /* beacon_after params */
11631         ret = set_beacon_data(msg, &settings->beacon_after);
11632         if (ret)
11633                 goto error;
11634
11635         /* beacon_csa params */
11636         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
11637         if (!beacon_csa)
11638                 goto nla_put_failure;
11639
11640         ret = set_beacon_data(msg, &settings->beacon_csa);
11641         if (ret)
11642                 goto error;
11643
11644         NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
11645                     settings->counter_offset_beacon);
11646
11647         if (settings->beacon_csa.probe_resp)
11648                 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
11649                             settings->counter_offset_presp);
11650
11651         nla_nest_end(msg, beacon_csa);
11652         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
11653         if (ret) {
11654                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
11655                            ret, strerror(-ret));
11656         }
11657         return ret;
11658
11659 nla_put_failure:
11660         ret = -ENOBUFS;
11661 error:
11662         nlmsg_free(msg);
11663         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
11664         return ret;
11665 }
11666
11667
11668 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
11669                                u8 qos_map_set_len)
11670 {
11671         struct i802_bss *bss = priv;
11672         struct wpa_driver_nl80211_data *drv = bss->drv;
11673         struct nl_msg *msg;
11674         int ret;
11675
11676         msg = nlmsg_alloc();
11677         if (!msg)
11678                 return -ENOMEM;
11679
11680         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
11681                     qos_map_set, qos_map_set_len);
11682
11683         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_QOS_MAP);
11684         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
11685         NLA_PUT(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set);
11686
11687         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
11688         if (ret)
11689                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
11690
11691         return ret;
11692
11693 nla_put_failure:
11694         nlmsg_free(msg);
11695         return -ENOBUFS;
11696 }
11697
11698
11699 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
11700         .name = "nl80211",
11701         .desc = "Linux nl80211/cfg80211",
11702         .get_bssid = wpa_driver_nl80211_get_bssid,
11703         .get_ssid = wpa_driver_nl80211_get_ssid,
11704         .set_key = driver_nl80211_set_key,
11705         .scan2 = driver_nl80211_scan2,
11706         .sched_scan = wpa_driver_nl80211_sched_scan,
11707         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
11708         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
11709         .deauthenticate = driver_nl80211_deauthenticate,
11710         .authenticate = driver_nl80211_authenticate,
11711         .associate = wpa_driver_nl80211_associate,
11712         .global_init = nl80211_global_init,
11713         .global_deinit = nl80211_global_deinit,
11714         .init2 = wpa_driver_nl80211_init,
11715         .deinit = driver_nl80211_deinit,
11716         .get_capa = wpa_driver_nl80211_get_capa,
11717         .set_operstate = wpa_driver_nl80211_set_operstate,
11718         .set_supp_port = wpa_driver_nl80211_set_supp_port,
11719         .set_country = wpa_driver_nl80211_set_country,
11720         .get_country = wpa_driver_nl80211_get_country,
11721         .set_ap = wpa_driver_nl80211_set_ap,
11722         .set_acl = wpa_driver_nl80211_set_acl,
11723         .if_add = wpa_driver_nl80211_if_add,
11724         .if_remove = driver_nl80211_if_remove,
11725         .send_mlme = driver_nl80211_send_mlme,
11726         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
11727         .sta_add = wpa_driver_nl80211_sta_add,
11728         .sta_remove = driver_nl80211_sta_remove,
11729         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
11730         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
11731         .hapd_init = i802_init,
11732         .hapd_deinit = i802_deinit,
11733         .set_wds_sta = i802_set_wds_sta,
11734         .get_seqnum = i802_get_seqnum,
11735         .flush = i802_flush,
11736         .get_inact_sec = i802_get_inact_sec,
11737         .sta_clear_stats = i802_sta_clear_stats,
11738         .set_rts = i802_set_rts,
11739         .set_frag = i802_set_frag,
11740         .set_tx_queue_params = i802_set_tx_queue_params,
11741         .set_sta_vlan = driver_nl80211_set_sta_vlan,
11742         .sta_deauth = i802_sta_deauth,
11743         .sta_disassoc = i802_sta_disassoc,
11744         .read_sta_data = driver_nl80211_read_sta_data,
11745         .set_freq = i802_set_freq,
11746         .send_action = driver_nl80211_send_action,
11747         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
11748         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
11749         .cancel_remain_on_channel =
11750         wpa_driver_nl80211_cancel_remain_on_channel,
11751         .probe_req_report = driver_nl80211_probe_req_report,
11752         .deinit_ap = wpa_driver_nl80211_deinit_ap,
11753         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
11754         .resume = wpa_driver_nl80211_resume,
11755         .send_ft_action = nl80211_send_ft_action,
11756         .signal_monitor = nl80211_signal_monitor,
11757         .signal_poll = nl80211_signal_poll,
11758         .send_frame = nl80211_send_frame,
11759         .shared_freq = wpa_driver_nl80211_shared_freq,
11760         .set_param = nl80211_set_param,
11761         .get_radio_name = nl80211_get_radio_name,
11762         .add_pmkid = nl80211_add_pmkid,
11763         .remove_pmkid = nl80211_remove_pmkid,
11764         .flush_pmkid = nl80211_flush_pmkid,
11765         .set_rekey_info = nl80211_set_rekey_info,
11766         .poll_client = nl80211_poll_client,
11767         .set_p2p_powersave = nl80211_set_p2p_powersave,
11768         .start_dfs_cac = nl80211_start_radar_detection,
11769         .stop_ap = wpa_driver_nl80211_stop_ap,
11770 #ifdef CONFIG_TDLS
11771         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
11772         .tdls_oper = nl80211_tdls_oper,
11773 #endif /* CONFIG_TDLS */
11774         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
11775         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
11776         .get_survey = wpa_driver_nl80211_get_survey,
11777         .status = wpa_driver_nl80211_status,
11778         .switch_channel = nl80211_switch_channel,
11779 #ifdef ANDROID_P2P
11780         .set_noa = wpa_driver_set_p2p_noa,
11781         .get_noa = wpa_driver_get_p2p_noa,
11782         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
11783 #endif /* ANDROID_P2P */
11784 #ifdef ANDROID
11785         .driver_cmd = wpa_driver_nl80211_driver_cmd,
11786 #endif /* ANDROID */
11787         .set_qos_map = nl80211_set_qos_map,
11788 };