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/types.h>
  15 #include <fcntl.h>
  16 #include <net/if.h>
  17 #include <netlink/genl/genl.h>
  18 #include <netlink/genl/ctrl.h>
  19 #ifdef CONFIG_LIBNL3_ROUTE
  20 #include <netlink/route/neighbour.h>
  21 #endif /* CONFIG_LIBNL3_ROUTE */
  22 #include <linux/rtnetlink.h>
  23 #include <netpacket/packet.h>
  24 #include <linux/errqueue.h>
  25
  26 #include "common.h"
  27 #include "eloop.h"
  28 #include "common/qca-vendor.h"
  29 #include "common/qca-vendor-attr.h"
  30 #include "common/ieee802_11_defs.h"
  31 #include "common/ieee802_11_common.h"
  32 #include "l2_packet/l2_packet.h"
  33 #include "netlink.h"
  34 #include "linux_defines.h"
  35 #include "linux_ioctl.h"
  36 #include "radiotap.h"
  37 #include "radiotap_iter.h"
  38 #include "rfkill.h"
  39 #include "driver_nl80211.h"
  40
  41
  42 #ifndef CONFIG_LIBNL20
  43 /*
  44  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  45  * but when you free a socket again it will mess up its bitmap and
  46  * and use the wrong number the next time it needs a socket ID.
  47  * Therefore, we wrap the handle alloc/destroy and add our own pid
  48  * accounting.
  49  */
  50 static uint32_t port_bitmap[32] = { 0 };
  51
  52 static struct nl_handle *nl80211_handle_alloc(void *cb)
  53 {
  54         struct nl_handle *handle;
  55         uint32_t pid = getpid() & 0x3FFFFF;
  56         int i;
  57
  58         handle = nl_handle_alloc_cb(cb);
  59
  60         for (i = 0; i < 1024; i++) {
  61                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  62                         continue;
  63                 port_bitmap[i / 32] |= 1 << (i % 32);
  64                 pid += i << 22;
  65                 break;
  66         }
  67
  68         nl_socket_set_local_port(handle, pid);
  69
  70         return handle;
  71 }
  72
  73 static void nl80211_handle_destroy(struct nl_handle *handle)
  74 {
  75         uint32_t port = nl_socket_get_local_port(handle);
  76
  77         port >>= 22;
  78         port_bitmap[port / 32] &= ~(1 << (port % 32));
  79
  80         nl_handle_destroy(handle);
  81 }
  82 #endif /* CONFIG_LIBNL20 */
  83
  84
  85 #ifdef ANDROID
  86 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
  87 #undef nl_socket_set_nonblocking
  88 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
  89
  90 #define genl_ctrl_resolve android_genl_ctrl_resolve
  91 #endif /* ANDROID */
  92
  93
  94 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  95 {
  96         struct nl_handle *handle;
  97
  98         handle = nl80211_handle_alloc(cb);
  99         if (handle == NULL) {
 100                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 101                            "callbacks (%s)", dbg);
 102                 return NULL;
 103         }
 104
 105         if (genl_connect(handle)) {
 106                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 107                            "netlink (%s)", dbg);
 108                 nl80211_handle_destroy(handle);
 109                 return NULL;
 110         }
 111
 112         return handle;
 113 }
 114
 115
 116 static void nl_destroy_handles(struct nl_handle **handle)
 117 {
 118         if (*handle == NULL)
 119                 return;
 120         nl80211_handle_destroy(*handle);
 121         *handle = NULL;
 122 }
 123
 124
 125 #if __WORDSIZE == 64
 126 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 127 #else
 128 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 129 #endif
 130
 131 static void nl80211_register_eloop_read(struct nl_handle **handle,
 132                                         eloop_sock_handler handler,
 133                                         void *eloop_data)
 134 {
 135         nl_socket_set_nonblocking(*handle);
 136         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 137                                  eloop_data, *handle);
 138         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 139 }
 140
 141
 142 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 143 {
 144         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 145         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 146         nl_destroy_handles(handle);
 147 }
 148
 149
 150 static void nl80211_global_deinit(void *priv);
 151
 152 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 153 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 154                                             struct hostapd_freq_params *freq);
 155
 156 static int
 157 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 158                                    const u8 *set_addr, int first,
 159                                    const char *driver_params);
 160 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 161                                   unsigned int freq, unsigned int wait,
 162                                   const u8 *buf, size_t buf_len, u64 *cookie,
 163                                   int no_cck, int no_ack, int offchanok);
 164 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 165                                                int report);
 166
 167 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 168 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 169 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 170
 171 static int nl80211_set_channel(struct i802_bss *bss,
 172                                struct hostapd_freq_params *freq, int set_chan);
 173 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 174                                      int ifindex, int disabled);
 175
 176 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 177                               int reset_mode);
 178
 179 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 180 static int nl80211_set_param(void *priv, const char *param);
 181
 182
 183 /* Converts nl80211_chan_width to a common format */
 184 enum chan_width convert2width(int width)
 185 {
 186         switch (width) {
 187         case NL80211_CHAN_WIDTH_20_NOHT:
 188                 return CHAN_WIDTH_20_NOHT;
 189         case NL80211_CHAN_WIDTH_20:
 190                 return CHAN_WIDTH_20;
 191         case NL80211_CHAN_WIDTH_40:
 192                 return CHAN_WIDTH_40;
 193         case NL80211_CHAN_WIDTH_80:
 194                 return CHAN_WIDTH_80;
 195         case NL80211_CHAN_WIDTH_80P80:
 196                 return CHAN_WIDTH_80P80;
 197         case NL80211_CHAN_WIDTH_160:
 198                 return CHAN_WIDTH_160;
 199         }
 200         return CHAN_WIDTH_UNKNOWN;
 201 }
 202
 203
 204 int is_ap_interface(enum nl80211_iftype nlmode)
 205 {
 206         return nlmode == NL80211_IFTYPE_AP ||
 207                 nlmode == NL80211_IFTYPE_P2P_GO;
 208 }
 209
 210
 211 int is_sta_interface(enum nl80211_iftype nlmode)
 212 {
 213         return nlmode == NL80211_IFTYPE_STATION ||
 214                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 215 }
 216
 217
 218 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 219 {
 220         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 221                 nlmode == NL80211_IFTYPE_P2P_GO;
 222 }
 223
 224
 225 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 226                                   int ifindex)
 227 {
 228         struct i802_bss *bss;
 229
 230         for (bss = drv->first_bss; bss; bss = bss->next) {
 231                 if (bss->ifindex == ifindex)
 232                         return bss;
 233         }
 234
 235         return NULL;
 236 }
 237
 238
 239 static int is_mesh_interface(enum nl80211_iftype nlmode)
 240 {
 241         return nlmode == NL80211_IFTYPE_MESH_POINT;
 242 }
 243
 244
 245 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 246 {
 247         if (drv->associated)
 248                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 249         drv->associated = 0;
 250         os_memset(drv->bssid, 0, ETH_ALEN);
 251 }
 252
 253
 254 /* nl80211 code */
 255 static int ack_handler(struct nl_msg *msg, void *arg)
 256 {
 257         int *err = arg;
 258         *err = 0;
 259         return NL_STOP;
 260 }
 261
 262 static int finish_handler(struct nl_msg *msg, void *arg)
 263 {
 264         int *ret = arg;
 265         *ret = 0;
 266         return NL_SKIP;
 267 }
 268
 269 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 270                          void *arg)
 271 {
 272         int *ret = arg;
 273         *ret = err->error;
 274         return NL_SKIP;
 275 }
 276
 277
 278 static int no_seq_check(struct nl_msg *msg, void *arg)
 279 {
 280         return NL_OK;
 281 }
 282
 283
 284 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 285 {
 286         /*
 287          * Clear nlmsg data, e.g., to make sure key material is not left in
 288          * heap memory for unnecessarily long time.
 289          */
 290         if (msg) {
 291                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 292                 void *data = nlmsg_data(hdr);
 293                 /*
 294                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 295                  * only libnl were to maintain a stable API.. Neither will work
 296                  * with all released versions, so just calculate the length
 297                  * here.
 298                  */
 299                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 300
 301                 os_memset(data, 0, len);
 302         }
 303 }
 304
 305
 306 static int send_and_recv(struct nl80211_global *global,
 307                          struct nl_handle *nl_handle, struct nl_msg *msg,
 308                          int (*valid_handler)(struct nl_msg *, void *),
 309                          void *valid_data)
 310 {
 311         struct nl_cb *cb;
 312         int err = -ENOMEM;
 313
 314         if (!msg)
 315                 return -ENOMEM;
 316
 317         cb = nl_cb_clone(global->nl_cb);
 318         if (!cb)
 319                 goto out;
 320
 321         err = nl_send_auto_complete(nl_handle, msg);
 322         if (err < 0)
 323                 goto out;
 324
 325         err = 1;
 326
 327         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 328         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 329         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 330
 331         if (valid_handler)
 332                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 333                           valid_handler, valid_data);
 334
 335         while (err > 0) {
 336                 int res = nl_recvmsgs(nl_handle, cb);
 337                 if (res < 0) {
 338                         wpa_printf(MSG_INFO,
 339                                    "nl80211: %s->nl_recvmsgs failed: %d",
 340                                    __func__, res);
 341                 }
 342         }
 343  out:
 344         nl_cb_put(cb);
 345         if (!valid_handler && valid_data == (void *) -1)
 346                 nl80211_nlmsg_clear(msg);
 347         nlmsg_free(msg);
 348         return err;
 349 }
 350
 351
 352 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 353                        struct nl_msg *msg,
 354                        int (*valid_handler)(struct nl_msg *, void *),
 355                        void *valid_data)
 356 {
 357         return send_and_recv(drv->global, drv->global->nl, msg,
 358                              valid_handler, valid_data);
 359 }
 360
 361
 362 struct family_data {
 363         const char *group;
 364         int id;
 365 };
 366
 367
 368 static int family_handler(struct nl_msg *msg, void *arg)
 369 {
 370         struct family_data *res = arg;
 371         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 372         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 373         struct nlattr *mcgrp;
 374         int i;
 375
 376         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 377                   genlmsg_attrlen(gnlh, 0), NULL);
 378         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 379                 return NL_SKIP;
 380
 381         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 382                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 383                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 384                           nla_len(mcgrp), NULL);
 385                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 386                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 387                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 388                                res->group,
 389                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 390                         continue;
 391                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 392                 break;
 393         };
 394
 395         return NL_SKIP;
 396 }
 397
 398
 399 static int nl_get_multicast_id(struct nl80211_global *global,
 400                                const char *family, const char *group)
 401 {
 402         struct nl_msg *msg;
 403         int ret;
 404         struct family_data res = { group, -ENOENT };
 405
 406         msg = nlmsg_alloc();
 407         if (!msg)
 408                 return -ENOMEM;
 409         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 410                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 411             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 412                 nlmsg_free(msg);
 413                 return -1;
 414         }
 415
 416         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 417         if (ret == 0)
 418                 ret = res.id;
 419         return ret;
 420 }
 421
 422
 423 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 424                    struct nl_msg *msg, int flags, uint8_t cmd)
 425 {
 426         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 427                            0, flags, cmd, 0);
 428 }
 429
 430
 431 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 432 {
 433         if (bss->wdev_id_set)
 434                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 435         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 436 }
 437
 438
 439 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 440 {
 441         struct nl_msg *msg;
 442
 443         msg = nlmsg_alloc();
 444         if (!msg)
 445                 return NULL;
 446
 447         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 448             nl80211_set_iface_id(msg, bss) < 0) {
 449                 nlmsg_free(msg);
 450                 return NULL;
 451         }
 452
 453         return msg;
 454 }
 455
 456
 457 static struct nl_msg *
 458 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 459                     int flags, uint8_t cmd)
 460 {
 461         struct nl_msg *msg;
 462
 463         msg = nlmsg_alloc();
 464         if (!msg)
 465                 return NULL;
 466
 467         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 468             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 469                 nlmsg_free(msg);
 470                 return NULL;
 471         }
 472
 473         return msg;
 474 }
 475
 476
 477 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 478                                 uint8_t cmd)
 479 {
 480         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 481 }
 482
 483
 484 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 485 {
 486         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 487 }
 488
 489
 490 struct wiphy_idx_data {
 491         int wiphy_idx;
 492         enum nl80211_iftype nlmode;
 493         u8 *macaddr;
 494 };
 495
 496
 497 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 498 {
 499         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 500         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 501         struct wiphy_idx_data *info = arg;
 502
 503         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 504                   genlmsg_attrlen(gnlh, 0), NULL);
 505
 506         if (tb[NL80211_ATTR_WIPHY])
 507                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 508
 509         if (tb[NL80211_ATTR_IFTYPE])
 510                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 511
 512         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 513                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 514                           ETH_ALEN);
 515
 516         return NL_SKIP;
 517 }
 518
 519
 520 int nl80211_get_wiphy_index(struct i802_bss *bss)
 521 {
 522         struct nl_msg *msg;
 523         struct wiphy_idx_data data = {
 524                 .wiphy_idx = -1,
 525                 .macaddr = NULL,
 526         };
 527
 528         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 529                 return -1;
 530
 531         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 532                 return data.wiphy_idx;
 533         return -1;
 534 }
 535
 536
 537 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 538 {
 539         struct nl_msg *msg;
 540         struct wiphy_idx_data data = {
 541                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 542                 .macaddr = NULL,
 543         };
 544
 545         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 546                 return NL80211_IFTYPE_UNSPECIFIED;
 547
 548         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 549                 return data.nlmode;
 550         return NL80211_IFTYPE_UNSPECIFIED;
 551 }
 552
 553
 554 static int nl80211_get_macaddr(struct i802_bss *bss)
 555 {
 556         struct nl_msg *msg;
 557         struct wiphy_idx_data data = {
 558                 .macaddr = bss->addr,
 559         };
 560
 561         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 562                 return -1;
 563
 564         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 565 }
 566
 567
 568 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 569                                     struct nl80211_wiphy_data *w)
 570 {
 571         struct nl_msg *msg;
 572         int ret;
 573
 574         msg = nlmsg_alloc();
 575         if (!msg)
 576                 return -1;
 577
 578         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 579             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 580                 nlmsg_free(msg);
 581                 return -1;
 582         }
 583
 584         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 585         if (ret) {
 586                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 587                            "failed: ret=%d (%s)",
 588                            ret, strerror(-ret));
 589         }
 590         return ret;
 591 }
 592
 593
 594 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 595 {
 596         struct nl80211_wiphy_data *w = eloop_ctx;
 597         int res;
 598
 599         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 600
 601         res = nl_recvmsgs(handle, w->nl_cb);
 602         if (res < 0) {
 603                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 604                            __func__, res);
 605         }
 606 }
 607
 608
 609 static int process_beacon_event(struct nl_msg *msg, void *arg)
 610 {
 611         struct nl80211_wiphy_data *w = arg;
 612         struct wpa_driver_nl80211_data *drv;
 613         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 614         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 615         union wpa_event_data event;
 616
 617         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 618                   genlmsg_attrlen(gnlh, 0), NULL);
 619
 620         if (gnlh->cmd != NL80211_CMD_FRAME) {
 621                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 622                            gnlh->cmd);
 623                 return NL_SKIP;
 624         }
 625
 626         if (!tb[NL80211_ATTR_FRAME])
 627                 return NL_SKIP;
 628
 629         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 630                          wiphy_list) {
 631                 os_memset(&event, 0, sizeof(event));
 632                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 633                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 634                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 635         }
 636
 637         return NL_SKIP;
 638 }
 639
 640
 641 static struct nl80211_wiphy_data *
 642 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 643 {
 644         static DEFINE_DL_LIST(nl80211_wiphys);
 645         struct nl80211_wiphy_data *w;
 646         int wiphy_idx, found = 0;
 647         struct i802_bss *tmp_bss;
 648
 649         if (bss->wiphy_data != NULL)
 650                 return bss->wiphy_data;
 651
 652         wiphy_idx = nl80211_get_wiphy_index(bss);
 653
 654         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 655                 if (w->wiphy_idx == wiphy_idx)
 656                         goto add;
 657         }
 658
 659         /* alloc new one */
 660         w = os_zalloc(sizeof(*w));
 661         if (w == NULL)
 662                 return NULL;
 663         w->wiphy_idx = wiphy_idx;
 664         dl_list_init(&w->bsss);
 665         dl_list_init(&w->drvs);
 666
 667         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 668         if (!w->nl_cb) {
 669                 os_free(w);
 670                 return NULL;
 671         }
 672         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 673         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 674                   w);
 675
 676         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 677                                          "wiphy beacons");
 678         if (w->nl_beacons == NULL) {
 679                 os_free(w);
 680                 return NULL;
 681         }
 682
 683         if (nl80211_register_beacons(bss->drv, w)) {
 684                 nl_destroy_handles(&w->nl_beacons);
 685                 os_free(w);
 686                 return NULL;
 687         }
 688
 689         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 690
 691         dl_list_add(&nl80211_wiphys, &w->list);
 692
 693 add:
 694         /* drv entry for this bss already there? */
 695         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 696                 if (tmp_bss->drv == bss->drv) {
 697                         found = 1;
 698                         break;
 699                 }
 700         }
 701         /* if not add it */
 702         if (!found)
 703                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 704
 705         dl_list_add(&w->bsss, &bss->wiphy_list);
 706         bss->wiphy_data = w;
 707         return w;
 708 }
 709
 710
 711 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 712 {
 713         struct nl80211_wiphy_data *w = bss->wiphy_data;
 714         struct i802_bss *tmp_bss;
 715         int found = 0;
 716
 717         if (w == NULL)
 718                 return;
 719         bss->wiphy_data = NULL;
 720         dl_list_del(&bss->wiphy_list);
 721
 722         /* still any for this drv present? */
 723         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 724                 if (tmp_bss->drv == bss->drv) {
 725                         found = 1;
 726                         break;
 727                 }
 728         }
 729         /* if not remove it */
 730         if (!found)
 731                 dl_list_del(&bss->drv->wiphy_list);
 732
 733         if (!dl_list_empty(&w->bsss))
 734                 return;
 735
 736         nl80211_destroy_eloop_handle(&w->nl_beacons);
 737
 738         nl_cb_put(w->nl_cb);
 739         dl_list_del(&w->list);
 740         os_free(w);
 741 }
 742
 743
 744 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 745 {
 746         struct i802_bss *bss = priv;
 747         struct wpa_driver_nl80211_data *drv = bss->drv;
 748         if (!drv->associated)
 749                 return -1;
 750         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 751         return 0;
 752 }
 753
 754
 755 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 756 {
 757         struct i802_bss *bss = priv;
 758         struct wpa_driver_nl80211_data *drv = bss->drv;
 759         if (!drv->associated)
 760                 return -1;
 761         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 762         return drv->ssid_len;
 763 }
 764
 765
 766 static void wpa_driver_nl80211_event_newlink(
 767         struct wpa_driver_nl80211_data *drv, const char *ifname)
 768 {
 769         union wpa_event_data event;
 770
 771         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 772                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 773                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 774                                    drv->first_bss->ifname);
 775                         return;
 776                 }
 777                 if (!drv->if_removed)
 778                         return;
 779                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 780                            drv->first_bss->ifname);
 781                 drv->if_removed = 0;
 782         }
 783
 784         os_memset(&event, 0, sizeof(event));
 785         os_strlcpy(event.interface_status.ifname, ifname,
 786                    sizeof(event.interface_status.ifname));
 787         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 788         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 789 }
 790
 791
 792 static void wpa_driver_nl80211_event_dellink(
 793         struct wpa_driver_nl80211_data *drv, const char *ifname)
 794 {
 795         union wpa_event_data event;
 796
 797         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 798                 if (drv->if_removed) {
 799                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 800                                    ifname);
 801                         return;
 802                 }
 803                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 804                            ifname);
 805                 drv->if_removed = 1;
 806         } else {
 807                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 808                            ifname);
 809         }
 810
 811         os_memset(&event, 0, sizeof(event));
 812         os_strlcpy(event.interface_status.ifname, ifname,
 813                    sizeof(event.interface_status.ifname));
 814         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 815         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 816 }
 817
 818
 819 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 820                                          u8 *buf, size_t len)
 821 {
 822         int attrlen, rta_len;
 823         struct rtattr *attr;
 824
 825         attrlen = len;
 826         attr = (struct rtattr *) buf;
 827
 828         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 829         while (RTA_OK(attr, attrlen)) {
 830                 if (attr->rta_type == IFLA_IFNAME) {
 831                         if (os_strcmp(((char *) attr) + rta_len,
 832                                       drv->first_bss->ifname) == 0)
 833                                 return 1;
 834                         else
 835                                 break;
 836                 }
 837                 attr = RTA_NEXT(attr, attrlen);
 838         }
 839
 840         return 0;
 841 }
 842
 843
 844 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 845                                           int ifindex, u8 *buf, size_t len)
 846 {
 847         if (drv->ifindex == ifindex)
 848                 return 1;
 849
 850         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 851                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 852                            "interface");
 853                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 854                 return 1;
 855         }
 856
 857         return 0;
 858 }
 859
 860
 861 static struct wpa_driver_nl80211_data *
 862 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 863 {
 864         struct wpa_driver_nl80211_data *drv;
 865         dl_list_for_each(drv, &global->interfaces,
 866                          struct wpa_driver_nl80211_data, list) {
 867                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 868                     have_ifidx(drv, idx))
 869                         return drv;
 870         }
 871         return NULL;
 872 }
 873
 874
 875 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 876                                                  struct ifinfomsg *ifi,
 877                                                  u8 *buf, size_t len)
 878 {
 879         struct nl80211_global *global = ctx;
 880         struct wpa_driver_nl80211_data *drv;
 881         int attrlen;
 882         struct rtattr *attr;
 883         u32 brid = 0;
 884         char namebuf[IFNAMSIZ];
 885         char ifname[IFNAMSIZ + 1];
 886         char extra[100], *pos, *end;
 887
 888         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 889         if (!drv) {
 890                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 891                            ifi->ifi_index);
 892                 return;
 893         }
 894
 895         extra[0] = '\0';
 896         pos = extra;
 897         end = pos + sizeof(extra);
 898         ifname[0] = '\0';
 899
 900         attrlen = len;
 901         attr = (struct rtattr *) buf;
 902         while (RTA_OK(attr, attrlen)) {
 903                 switch (attr->rta_type) {
 904                 case IFLA_IFNAME:
 905                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 906                                 break;
 907                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 908                         ifname[RTA_PAYLOAD(attr)] = '\0';
 909                         break;
 910                 case IFLA_MASTER:
 911                         brid = nla_get_u32((struct nlattr *) attr);
 912                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 913                         break;
 914                 case IFLA_WIRELESS:
 915                         pos += os_snprintf(pos, end - pos, " wext");
 916                         break;
 917                 case IFLA_OPERSTATE:
 918                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 919                                            nla_get_u32((struct nlattr *) attr));
 920                         break;
 921                 case IFLA_LINKMODE:
 922                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 923                                            nla_get_u32((struct nlattr *) attr));
 924                         break;
 925                 }
 926                 attr = RTA_NEXT(attr, attrlen);
 927         }
 928         extra[sizeof(extra) - 1] = '\0';
 929
 930         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 931                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 932                    ifi->ifi_flags,
 933                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 934                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 935                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 936                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 937
 938         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 939                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 940                     linux_iface_up(drv->global->ioctl_sock,
 941                                    drv->first_bss->ifname) > 0) {
 942                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 943                                    "event since interface %s is up", namebuf);
 944                         drv->ignore_if_down_event = 0;
 945                         return;
 946                 }
 947                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 948                 if (drv->ignore_if_down_event) {
 949                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 950                                    "event generated by mode change");
 951                         drv->ignore_if_down_event = 0;
 952                 } else {
 953                         drv->if_disabled = 1;
 954                         wpa_supplicant_event(drv->ctx,
 955                                              EVENT_INTERFACE_DISABLED, NULL);
 956
 957                         /*
 958                          * Try to get drv again, since it may be removed as
 959                          * part of the EVENT_INTERFACE_DISABLED handling for
 960                          * dynamic interfaces
 961                          */
 962                         drv = nl80211_find_drv(global, ifi->ifi_index,
 963                                                buf, len);
 964                         if (!drv)
 965                                 return;
 966                 }
 967         }
 968
 969         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 970                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 971                     linux_iface_up(drv->global->ioctl_sock,
 972                                    drv->first_bss->ifname) == 0) {
 973                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 974                                    "event since interface %s is down",
 975                                    namebuf);
 976                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 977                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 978                                    "event since interface %s does not exist",
 979                                    drv->first_bss->ifname);
 980                 } else if (drv->if_removed) {
 981                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 982                                    "event since interface %s is marked "
 983                                    "removed", drv->first_bss->ifname);
 984                 } else {
 985                         struct i802_bss *bss;
 986                         u8 addr[ETH_ALEN];
 987
 988                         /* Re-read MAC address as it may have changed */
 989                         bss = get_bss_ifindex(drv, ifi->ifi_index);
 990                         if (bss &&
 991                             linux_get_ifhwaddr(drv->global->ioctl_sock,
 992                                                bss->ifname, addr) < 0) {
 993                                 wpa_printf(MSG_DEBUG,
 994                                            "nl80211: %s: failed to re-read MAC address",
 995                                            bss->ifname);
 996                         } else if (bss &&
 997                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
 998                                 wpa_printf(MSG_DEBUG,
 999                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1000                                            MACSTR " to " MACSTR,
1001                                            ifi->ifi_index, bss->ifname,
1002                                            MAC2STR(bss->addr),
1003                                            MAC2STR(addr));
1004                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1005                         }
1006
1007                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1008                         drv->if_disabled = 0;
1009                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1010                                              NULL);
1011                 }
1012         }
1013
1014         /*
1015          * Some drivers send the association event before the operup event--in
1016          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1017          * fails. This will hit us when wpa_supplicant does not need to do
1018          * IEEE 802.1X authentication
1019          */
1020         if (drv->operstate == 1 &&
1021             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1022             !(ifi->ifi_flags & IFF_RUNNING)) {
1023                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1024                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1025                                        -1, IF_OPER_UP);
1026         }
1027
1028         if (ifname[0])
1029                 wpa_driver_nl80211_event_newlink(drv, ifname);
1030
1031         if (ifi->ifi_family == AF_BRIDGE && brid) {
1032                 struct i802_bss *bss;
1033
1034                 /* device has been added to bridge */
1035                 if (!if_indextoname(brid, namebuf)) {
1036                         wpa_printf(MSG_DEBUG,
1037                                    "nl80211: Could not find bridge ifname for ifindex %u",
1038                                    brid);
1039                         return;
1040                 }
1041                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1042                            brid, namebuf);
1043                 add_ifidx(drv, brid);
1044
1045                 for (bss = drv->first_bss; bss; bss = bss->next) {
1046                         if (os_strcmp(ifname, bss->ifname) == 0) {
1047                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1048                                 break;
1049                         }
1050                 }
1051         }
1052 }
1053
1054
1055 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1056                                                  struct ifinfomsg *ifi,
1057                                                  u8 *buf, size_t len)
1058 {
1059         struct nl80211_global *global = ctx;
1060         struct wpa_driver_nl80211_data *drv;
1061         int attrlen;
1062         struct rtattr *attr;
1063         u32 brid = 0;
1064         char ifname[IFNAMSIZ + 1];
1065         char extra[100], *pos, *end;
1066
1067         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1068         if (!drv) {
1069                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1070                            ifi->ifi_index);
1071                 return;
1072         }
1073
1074         extra[0] = '\0';
1075         pos = extra;
1076         end = pos + sizeof(extra);
1077         ifname[0] = '\0';
1078
1079         attrlen = len;
1080         attr = (struct rtattr *) buf;
1081         while (RTA_OK(attr, attrlen)) {
1082                 switch (attr->rta_type) {
1083                 case IFLA_IFNAME:
1084                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1085                                 break;
1086                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1087                         ifname[RTA_PAYLOAD(attr)] = '\0';
1088                         break;
1089                 case IFLA_MASTER:
1090                         brid = nla_get_u32((struct nlattr *) attr);
1091                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1092                         break;
1093                 case IFLA_OPERSTATE:
1094                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1095                                            nla_get_u32((struct nlattr *) attr));
1096                         break;
1097                 case IFLA_LINKMODE:
1098                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1099                                            nla_get_u32((struct nlattr *) attr));
1100                         break;
1101                 }
1102                 attr = RTA_NEXT(attr, attrlen);
1103         }
1104         extra[sizeof(extra) - 1] = '\0';
1105
1106         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1107                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1108                    ifi->ifi_flags,
1109                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1110                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1111                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1112                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1113
1114         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1115                 wpa_driver_nl80211_event_dellink(drv, ifname);
1116
1117         if (ifi->ifi_family == AF_BRIDGE && brid) {
1118                 /* device has been removed from bridge */
1119                 char namebuf[IFNAMSIZ];
1120
1121                 if (!if_indextoname(brid, namebuf)) {
1122                         wpa_printf(MSG_DEBUG,
1123                                    "nl80211: Could not find bridge ifname for ifindex %u",
1124                                    brid);
1125                 } else {
1126                         wpa_printf(MSG_DEBUG,
1127                                    "nl80211: Remove ifindex %u for bridge %s",
1128                                    brid, namebuf);
1129                 }
1130                 del_ifidx(drv, brid);
1131         }
1132 }
1133
1134
1135 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1136 {
1137         struct nl_msg *msg;
1138         int ret;
1139         struct nl80211_bss_info_arg arg;
1140
1141         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1142         os_memset(&arg, 0, sizeof(arg));
1143         arg.drv = drv;
1144         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1145         if (ret == 0) {
1146                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1147                         arg.ibss_freq : arg.assoc_freq;
1148                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1149                            "associated BSS from scan results: %u MHz", freq);
1150                 if (freq)
1151                         drv->assoc_freq = freq;
1152                 return drv->assoc_freq;
1153         }
1154         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1155                    "(%s)", ret, strerror(-ret));
1156         return drv->assoc_freq;
1157 }
1158
1159
1160 static int get_link_signal(struct nl_msg *msg, void *arg)
1161 {
1162         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1163         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1164         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1165         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1166                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1167                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1168         };
1169         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1170         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1171                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1172                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1173                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1174                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1175         };
1176         struct wpa_signal_info *sig_change = arg;
1177
1178         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1179                   genlmsg_attrlen(gnlh, 0), NULL);
1180         if (!tb[NL80211_ATTR_STA_INFO] ||
1181             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1182                              tb[NL80211_ATTR_STA_INFO], policy))
1183                 return NL_SKIP;
1184         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1185                 return NL_SKIP;
1186
1187         sig_change->current_signal =
1188                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1189
1190         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1191                 sig_change->avg_signal =
1192                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1193         else
1194                 sig_change->avg_signal = 0;
1195
1196         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1197                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1198                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1199                                      rate_policy)) {
1200                         sig_change->current_txrate = 0;
1201                 } else {
1202                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1203                                 sig_change->current_txrate =
1204                                         nla_get_u16(rinfo[
1205                                              NL80211_RATE_INFO_BITRATE]) * 100;
1206                         }
1207                 }
1208         }
1209
1210         return NL_SKIP;
1211 }
1212
1213
1214 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1215                             struct wpa_signal_info *sig)
1216 {
1217         struct nl_msg *msg;
1218
1219         sig->current_signal = -9999;
1220         sig->current_txrate = 0;
1221
1222         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1223             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1224                 nlmsg_free(msg);
1225                 return -ENOBUFS;
1226         }
1227
1228         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1229 }
1230
1231
1232 static int get_link_noise(struct nl_msg *msg, void *arg)
1233 {
1234         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1235         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1236         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1237         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1238                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1239                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1240         };
1241         struct wpa_signal_info *sig_change = arg;
1242
1243         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1244                   genlmsg_attrlen(gnlh, 0), NULL);
1245
1246         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1247                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1248                 return NL_SKIP;
1249         }
1250
1251         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1252                              tb[NL80211_ATTR_SURVEY_INFO],
1253                              survey_policy)) {
1254                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1255                            "attributes!");
1256                 return NL_SKIP;
1257         }
1258
1259         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1260                 return NL_SKIP;
1261
1262         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1263             sig_change->frequency)
1264                 return NL_SKIP;
1265
1266         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1267                 return NL_SKIP;
1268
1269         sig_change->current_noise =
1270                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1271
1272         return NL_SKIP;
1273 }
1274
1275
1276 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1277                            struct wpa_signal_info *sig_change)
1278 {
1279         struct nl_msg *msg;
1280
1281         sig_change->current_noise = 9999;
1282         sig_change->frequency = drv->assoc_freq;
1283
1284         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1285         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1286 }
1287
1288
1289 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1290                                              void *handle)
1291 {
1292         struct nl_cb *cb = eloop_ctx;
1293         int res;
1294
1295         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1296
1297         res = nl_recvmsgs(handle, cb);
1298         if (res < 0) {
1299                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1300                            __func__, res);
1301         }
1302 }
1303
1304
1305 /**
1306  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1307  * @priv: driver_nl80211 private data
1308  * @alpha2_arg: country to which to switch to
1309  * Returns: 0 on success, -1 on failure
1310  *
1311  * This asks nl80211 to set the regulatory domain for given
1312  * country ISO / IEC alpha2.
1313  */
1314 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1315 {
1316         struct i802_bss *bss = priv;
1317         struct wpa_driver_nl80211_data *drv = bss->drv;
1318         char alpha2[3];
1319         struct nl_msg *msg;
1320
1321         msg = nlmsg_alloc();
1322         if (!msg)
1323                 return -ENOMEM;
1324
1325         alpha2[0] = alpha2_arg[0];
1326         alpha2[1] = alpha2_arg[1];
1327         alpha2[2] = '\0';
1328
1329         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1330             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1331                 nlmsg_free(msg);
1332                 return -EINVAL;
1333         }
1334         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1335                 return -EINVAL;
1336         return 0;
1337 }
1338
1339
1340 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1341 {
1342         char *alpha2 = arg;
1343         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1344         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1345
1346         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1347                   genlmsg_attrlen(gnlh, 0), NULL);
1348         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1349                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1350                 return NL_SKIP;
1351         }
1352         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1353         return NL_SKIP;
1354 }
1355
1356
1357 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1358 {
1359         struct i802_bss *bss = priv;
1360         struct wpa_driver_nl80211_data *drv = bss->drv;
1361         struct nl_msg *msg;
1362         int ret;
1363
1364         msg = nlmsg_alloc();
1365         if (!msg)
1366                 return -ENOMEM;
1367
1368         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1369         alpha2[0] = '\0';
1370         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1371         if (!alpha2[0])
1372                 ret = -1;
1373
1374         return ret;
1375 }
1376
1377
1378 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1379 {
1380         int ret;
1381
1382         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1383         if (global->nl_cb == NULL) {
1384                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1385                            "callbacks");
1386                 return -1;
1387         }
1388
1389         global->nl = nl_create_handle(global->nl_cb, "nl");
1390         if (global->nl == NULL)
1391                 goto err;
1392
1393         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1394         if (global->nl80211_id < 0) {
1395                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1396                            "found");
1397                 goto err;
1398         }
1399
1400         global->nl_event = nl_create_handle(global->nl_cb, "event");
1401         if (global->nl_event == NULL)
1402                 goto err;
1403
1404         ret = nl_get_multicast_id(global, "nl80211", "scan");
1405         if (ret >= 0)
1406                 ret = nl_socket_add_membership(global->nl_event, ret);
1407         if (ret < 0) {
1408                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1409                            "membership for scan events: %d (%s)",
1410                            ret, strerror(-ret));
1411                 goto err;
1412         }
1413
1414         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1415         if (ret >= 0)
1416                 ret = nl_socket_add_membership(global->nl_event, ret);
1417         if (ret < 0) {
1418                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1419                            "membership for mlme events: %d (%s)",
1420                            ret, strerror(-ret));
1421                 goto err;
1422         }
1423
1424         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1425         if (ret >= 0)
1426                 ret = nl_socket_add_membership(global->nl_event, ret);
1427         if (ret < 0) {
1428                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1429                            "membership for regulatory events: %d (%s)",
1430                            ret, strerror(-ret));
1431                 /* Continue without regulatory events */
1432         }
1433
1434         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1435         if (ret >= 0)
1436                 ret = nl_socket_add_membership(global->nl_event, ret);
1437         if (ret < 0) {
1438                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1439                            "membership for vendor events: %d (%s)",
1440                            ret, strerror(-ret));
1441                 /* Continue without vendor events */
1442         }
1443
1444         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1445                   no_seq_check, NULL);
1446         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1447                   process_global_event, global);
1448
1449         nl80211_register_eloop_read(&global->nl_event,
1450                                     wpa_driver_nl80211_event_receive,
1451                                     global->nl_cb);
1452
1453         return 0;
1454
1455 err:
1456         nl_destroy_handles(&global->nl_event);
1457         nl_destroy_handles(&global->nl);
1458         nl_cb_put(global->nl_cb);
1459         global->nl_cb = NULL;
1460         return -1;
1461 }
1462
1463
1464 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1465 {
1466         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1467         /*
1468          * This may be for any interface; use ifdown event to disable
1469          * interface.
1470          */
1471 }
1472
1473
1474 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1475 {
1476         struct wpa_driver_nl80211_data *drv = ctx;
1477         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1478         if (i802_set_iface_flags(drv->first_bss, 1)) {
1479                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1480                            "after rfkill unblock");
1481                 return;
1482         }
1483         /* rtnetlink ifup handler will report interface as enabled */
1484 }
1485
1486
1487 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1488                                                       void *eloop_ctx,
1489                                                       void *handle)
1490 {
1491         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1492         u8 data[2048];
1493         struct msghdr msg;
1494         struct iovec entry;
1495         u8 control[512];
1496         struct cmsghdr *cmsg;
1497         int res, found_ee = 0, found_wifi = 0, acked = 0;
1498         union wpa_event_data event;
1499
1500         memset(&msg, 0, sizeof(msg));
1501         msg.msg_iov = &entry;
1502         msg.msg_iovlen = 1;
1503         entry.iov_base = data;
1504         entry.iov_len = sizeof(data);
1505         msg.msg_control = &control;
1506         msg.msg_controllen = sizeof(control);
1507
1508         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1509         /* if error or not fitting 802.3 header, return */
1510         if (res < 14)
1511                 return;
1512
1513         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1514         {
1515                 if (cmsg->cmsg_level == SOL_SOCKET &&
1516                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1517                         int *ack;
1518
1519                         found_wifi = 1;
1520                         ack = (void *)CMSG_DATA(cmsg);
1521                         acked = *ack;
1522                 }
1523
1524                 if (cmsg->cmsg_level == SOL_PACKET &&
1525                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1526                         struct sock_extended_err *err =
1527                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1528
1529                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1530                                 found_ee = 1;
1531                 }
1532         }
1533
1534         if (!found_ee || !found_wifi)
1535                 return;
1536
1537         memset(&event, 0, sizeof(event));
1538         event.eapol_tx_status.dst = data;
1539         event.eapol_tx_status.data = data + 14;
1540         event.eapol_tx_status.data_len = res - 14;
1541         event.eapol_tx_status.ack = acked;
1542         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1543 }
1544
1545
1546 static int nl80211_init_bss(struct i802_bss *bss)
1547 {
1548         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1549         if (!bss->nl_cb)
1550                 return -1;
1551
1552         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1553                   no_seq_check, NULL);
1554         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1555                   process_bss_event, bss);
1556
1557         return 0;
1558 }
1559
1560
1561 static void nl80211_destroy_bss(struct i802_bss *bss)
1562 {
1563         nl_cb_put(bss->nl_cb);
1564         bss->nl_cb = NULL;
1565 }
1566
1567
1568 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1569                                           void *global_priv, int hostapd,
1570                                           const u8 *set_addr,
1571                                           const char *driver_params)
1572 {
1573         struct wpa_driver_nl80211_data *drv;
1574         struct rfkill_config *rcfg;
1575         struct i802_bss *bss;
1576
1577         if (global_priv == NULL)
1578                 return NULL;
1579         drv = os_zalloc(sizeof(*drv));
1580         if (drv == NULL)
1581                 return NULL;
1582         drv->global = global_priv;
1583         drv->ctx = ctx;
1584         drv->hostapd = !!hostapd;
1585         drv->eapol_sock = -1;
1586
1587         /*
1588          * There is no driver capability flag for this, so assume it is
1589          * supported and disable this on first attempt to use if the driver
1590          * rejects the command due to missing support.
1591          */
1592         drv->set_rekey_offload = 1;
1593
1594         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1595         drv->if_indices = drv->default_if_indices;
1596
1597         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1598         if (!drv->first_bss) {
1599                 os_free(drv);
1600                 return NULL;
1601         }
1602         bss = drv->first_bss;
1603         bss->drv = drv;
1604         bss->ctx = ctx;
1605
1606         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1607         drv->monitor_ifidx = -1;
1608         drv->monitor_sock = -1;
1609         drv->eapol_tx_sock = -1;
1610         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1611
1612         if (nl80211_init_bss(bss))
1613                 goto failed;
1614
1615         rcfg = os_zalloc(sizeof(*rcfg));
1616         if (rcfg == NULL)
1617                 goto failed;
1618         rcfg->ctx = drv;
1619         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1620         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1621         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1622         drv->rfkill = rfkill_init(rcfg);
1623         if (drv->rfkill == NULL) {
1624                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1625                 os_free(rcfg);
1626         }
1627
1628         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1629                 drv->start_iface_up = 1;
1630
1631         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1632                 goto failed;
1633
1634         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1635         if (drv->eapol_tx_sock < 0)
1636                 goto failed;
1637
1638         if (drv->data_tx_status) {
1639                 int enabled = 1;
1640
1641                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1642                                &enabled, sizeof(enabled)) < 0) {
1643                         wpa_printf(MSG_DEBUG,
1644                                 "nl80211: wifi status sockopt failed\n");
1645                         drv->data_tx_status = 0;
1646                         if (!drv->use_monitor)
1647                                 drv->capa.flags &=
1648                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1649                 } else {
1650                         eloop_register_read_sock(drv->eapol_tx_sock,
1651                                 wpa_driver_nl80211_handle_eapol_tx_status,
1652                                 drv, NULL);
1653                 }
1654         }
1655
1656         if (drv->global) {
1657                 dl_list_add(&drv->global->interfaces, &drv->list);
1658                 drv->in_interface_list = 1;
1659         }
1660
1661         return bss;
1662
1663 failed:
1664         wpa_driver_nl80211_deinit(bss);
1665         return NULL;
1666 }
1667
1668
1669 /**
1670  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1671  * @ctx: context to be used when calling wpa_supplicant functions,
1672  * e.g., wpa_supplicant_event()
1673  * @ifname: interface name, e.g., wlan0
1674  * @global_priv: private driver global data from global_init()
1675  * Returns: Pointer to private data, %NULL on failure
1676  */
1677 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1678                                       void *global_priv)
1679 {
1680         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1681                                            NULL);
1682 }
1683
1684
1685 static int nl80211_register_frame(struct i802_bss *bss,
1686                                   struct nl_handle *nl_handle,
1687                                   u16 type, const u8 *match, size_t match_len)
1688 {
1689         struct wpa_driver_nl80211_data *drv = bss->drv;
1690         struct nl_msg *msg;
1691         int ret;
1692         char buf[30];
1693
1694         buf[0] = '\0';
1695         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1696         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1697                    type, fc2str(type), nl_handle, buf);
1698
1699         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1700             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1701             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1702                 nlmsg_free(msg);
1703                 return -1;
1704         }
1705
1706         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1707         if (ret) {
1708                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1709                            "failed (type=%u): ret=%d (%s)",
1710                            type, ret, strerror(-ret));
1711                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1712                             match, match_len);
1713         }
1714         return ret;
1715 }
1716
1717
1718 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1719 {
1720         if (bss->nl_mgmt) {
1721                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1722                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1723                 return -1;
1724         }
1725
1726         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1727         if (bss->nl_mgmt == NULL)
1728                 return -1;
1729
1730         return 0;
1731 }
1732
1733
1734 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1735 {
1736         nl80211_register_eloop_read(&bss->nl_mgmt,
1737                                     wpa_driver_nl80211_event_receive,
1738                                     bss->nl_cb);
1739 }
1740
1741
1742 static int nl80211_register_action_frame(struct i802_bss *bss,
1743                                          const u8 *match, size_t match_len)
1744 {
1745         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1746         return nl80211_register_frame(bss, bss->nl_mgmt,
1747                                       type, match, match_len);
1748 }
1749
1750
1751 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1752 {
1753         struct wpa_driver_nl80211_data *drv = bss->drv;
1754         int ret = 0;
1755
1756         if (nl80211_alloc_mgmt_handle(bss))
1757                 return -1;
1758         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1759                    "handle %p", bss->nl_mgmt);
1760
1761         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1762                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1763
1764                 /* register for any AUTH message */
1765                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1766         }
1767
1768 #ifdef CONFIG_INTERWORKING
1769         /* QoS Map Configure */
1770         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1771                 ret = -1;
1772 #endif /* CONFIG_INTERWORKING */
1773 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1774         /* GAS Initial Request */
1775         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1776                 ret = -1;
1777         /* GAS Initial Response */
1778         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1779                 ret = -1;
1780         /* GAS Comeback Request */
1781         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1782                 ret = -1;
1783         /* GAS Comeback Response */
1784         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1785                 ret = -1;
1786         /* Protected GAS Initial Request */
1787         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1788                 ret = -1;
1789         /* Protected GAS Initial Response */
1790         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1791                 ret = -1;
1792         /* Protected GAS Comeback Request */
1793         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1794                 ret = -1;
1795         /* Protected GAS Comeback Response */
1796         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1797                 ret = -1;
1798 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1799 #ifdef CONFIG_P2P
1800         /* P2P Public Action */
1801         if (nl80211_register_action_frame(bss,
1802                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1803                                           6) < 0)
1804                 ret = -1;
1805         /* P2P Action */
1806         if (nl80211_register_action_frame(bss,
1807                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1808                                           5) < 0)
1809                 ret = -1;
1810 #endif /* CONFIG_P2P */
1811 #ifdef CONFIG_IEEE80211W
1812         /* SA Query Response */
1813         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1814                 ret = -1;
1815 #endif /* CONFIG_IEEE80211W */
1816 #ifdef CONFIG_TDLS
1817         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1818                 /* TDLS Discovery Response */
1819                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1820                     0)
1821                         ret = -1;
1822         }
1823 #endif /* CONFIG_TDLS */
1824
1825         /* FT Action frames */
1826         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1827                 ret = -1;
1828         else
1829                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1830                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1831
1832         /* WNM - BSS Transition Management Request */
1833         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1834                 ret = -1;
1835         /* WNM-Sleep Mode Response */
1836         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1837                 ret = -1;
1838
1839 #ifdef CONFIG_HS20
1840         /* WNM-Notification */
1841         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1842                 ret = -1;
1843 #endif /* CONFIG_HS20 */
1844
1845         /* WMM-AC ADDTS Response */
1846         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1847                 ret = -1;
1848
1849         /* WMM-AC DELTS */
1850         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1851                 ret = -1;
1852
1853         /* Radio Measurement - Neighbor Report Response */
1854         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1855                 ret = -1;
1856
1857         /* Radio Measurement - Link Measurement Request */
1858         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1859             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1860                 ret = -1;
1861
1862         nl80211_mgmt_handle_register_eloop(bss);
1863
1864         return ret;
1865 }
1866
1867
1868 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1869 {
1870         int ret = 0;
1871
1872         if (nl80211_alloc_mgmt_handle(bss))
1873                 return -1;
1874
1875         wpa_printf(MSG_DEBUG,
1876                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1877                    bss->nl_mgmt);
1878
1879         /* Auth frames for mesh SAE */
1880         if (nl80211_register_frame(bss, bss->nl_mgmt,
1881                                    (WLAN_FC_TYPE_MGMT << 2) |
1882                                    (WLAN_FC_STYPE_AUTH << 4),
1883                                    NULL, 0) < 0)
1884                 ret = -1;
1885
1886         /* Mesh peering open */
1887         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1888                 ret = -1;
1889         /* Mesh peering confirm */
1890         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1891                 ret = -1;
1892         /* Mesh peering close */
1893         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1894                 ret = -1;
1895
1896         nl80211_mgmt_handle_register_eloop(bss);
1897
1898         return ret;
1899 }
1900
1901
1902 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1903 {
1904         struct nl_msg *msg;
1905         int ret;
1906
1907         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
1908         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
1909         if (ret) {
1910                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1911                            "failed: ret=%d (%s)",
1912                            ret, strerror(-ret));
1913         }
1914         return ret;
1915 }
1916
1917
1918 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
1919 {
1920         static const int stypes[] = {
1921                 WLAN_FC_STYPE_AUTH,
1922                 WLAN_FC_STYPE_ASSOC_REQ,
1923                 WLAN_FC_STYPE_REASSOC_REQ,
1924                 WLAN_FC_STYPE_DISASSOC,
1925                 WLAN_FC_STYPE_DEAUTH,
1926                 WLAN_FC_STYPE_ACTION,
1927                 WLAN_FC_STYPE_PROBE_REQ,
1928 /* Beacon doesn't work as mac80211 doesn't currently allow
1929  * it, but it wouldn't really be the right thing anyway as
1930  * it isn't per interface ... maybe just dump the scan
1931  * results periodically for OLBC?
1932  */
1933                 /* WLAN_FC_STYPE_BEACON, */
1934         };
1935         unsigned int i;
1936
1937         if (nl80211_alloc_mgmt_handle(bss))
1938                 return -1;
1939         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1940                    "handle %p", bss->nl_mgmt);
1941
1942         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
1943                 if (nl80211_register_frame(bss, bss->nl_mgmt,
1944                                            (WLAN_FC_TYPE_MGMT << 2) |
1945                                            (stypes[i] << 4),
1946                                            NULL, 0) < 0) {
1947                         goto out_err;
1948                 }
1949         }
1950
1951         if (nl80211_register_spurious_class3(bss))
1952                 goto out_err;
1953
1954         if (nl80211_get_wiphy_data_ap(bss) == NULL)
1955                 goto out_err;
1956
1957         nl80211_mgmt_handle_register_eloop(bss);
1958         return 0;
1959
1960 out_err:
1961         nl_destroy_handles(&bss->nl_mgmt);
1962         return -1;
1963 }
1964
1965
1966 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
1967 {
1968         if (nl80211_alloc_mgmt_handle(bss))
1969                 return -1;
1970         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1971                    "handle %p (device SME)", bss->nl_mgmt);
1972
1973         if (nl80211_register_frame(bss, bss->nl_mgmt,
1974                                    (WLAN_FC_TYPE_MGMT << 2) |
1975                                    (WLAN_FC_STYPE_ACTION << 4),
1976                                    NULL, 0) < 0)
1977                 goto out_err;
1978
1979         nl80211_mgmt_handle_register_eloop(bss);
1980         return 0;
1981
1982 out_err:
1983         nl_destroy_handles(&bss->nl_mgmt);
1984         return -1;
1985 }
1986
1987
1988 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
1989 {
1990         if (bss->nl_mgmt == NULL)
1991                 return;
1992         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
1993                    "(%s)", bss->nl_mgmt, reason);
1994         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
1995
1996         nl80211_put_wiphy_data_ap(bss);
1997 }
1998
1999
2000 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2001 {
2002         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2003 }
2004
2005
2006 static void nl80211_del_p2pdev(struct i802_bss *bss)
2007 {
2008         struct nl_msg *msg;
2009         int ret;
2010
2011         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2012         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2013
2014         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2015                    bss->ifname, (long long unsigned int) bss->wdev_id,
2016                    strerror(-ret));
2017 }
2018
2019
2020 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2021 {
2022         struct nl_msg *msg;
2023         int ret;
2024
2025         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2026                               NL80211_CMD_STOP_P2P_DEVICE);
2027         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2028
2029         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2030                    start ? "Start" : "Stop",
2031                    bss->ifname, (long long unsigned int) bss->wdev_id,
2032                    strerror(-ret));
2033         return ret;
2034 }
2035
2036
2037 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2038 {
2039         enum nl80211_iftype nlmode;
2040
2041         nlmode = nl80211_get_ifmode(bss);
2042         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2043                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2044                                              bss->ifname, up);
2045         }
2046
2047         /* P2P Device has start/stop which is equivalent */
2048         return nl80211_set_p2pdev(bss, up);
2049 }
2050
2051
2052 static int
2053 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2054                                    const u8 *set_addr, int first,
2055                                    const char *driver_params)
2056 {
2057         struct i802_bss *bss = drv->first_bss;
2058         int send_rfkill_event = 0;
2059         enum nl80211_iftype nlmode;
2060
2061         drv->ifindex = if_nametoindex(bss->ifname);
2062         bss->ifindex = drv->ifindex;
2063         bss->wdev_id = drv->global->if_add_wdevid;
2064         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2065
2066         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2067         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2068         drv->global->if_add_wdevid_set = 0;
2069
2070         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2071                 bss->static_ap = 1;
2072
2073         if (wpa_driver_nl80211_capa(drv))
2074                 return -1;
2075
2076         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2077                 return -1;
2078
2079         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2080                    bss->ifname, drv->phyname);
2081
2082         if (set_addr &&
2083             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2084              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2085                                 set_addr)))
2086                 return -1;
2087
2088         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2089                 drv->start_mode_ap = 1;
2090
2091         if (drv->hostapd || bss->static_ap)
2092                 nlmode = NL80211_IFTYPE_AP;
2093         else if (bss->if_dynamic)
2094                 nlmode = nl80211_get_ifmode(bss);
2095         else
2096                 nlmode = NL80211_IFTYPE_STATION;
2097
2098         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2099                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2100                 return -1;
2101         }
2102
2103         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2104                 nl80211_get_macaddr(bss);
2105
2106         if (!rfkill_is_blocked(drv->rfkill)) {
2107                 int ret = i802_set_iface_flags(bss, 1);
2108                 if (ret) {
2109                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2110                                    "interface '%s' UP", bss->ifname);
2111                         return ret;
2112                 }
2113                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2114                         return ret;
2115         } else {
2116                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2117                            "interface '%s' due to rfkill", bss->ifname);
2118                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2119                         return 0;
2120                 drv->if_disabled = 1;
2121                 send_rfkill_event = 1;
2122         }
2123
2124         if (!drv->hostapd)
2125                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2126                                        1, IF_OPER_DORMANT);
2127
2128         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2129                                bss->addr))
2130                 return -1;
2131         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2132
2133         if (send_rfkill_event) {
2134                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2135                                        drv, drv->ctx);
2136         }
2137
2138         return 0;
2139 }
2140
2141
2142 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2143 {
2144         struct nl_msg *msg;
2145
2146         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2147                    drv->ifindex);
2148         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2149         return send_and_recv_msgs(drv, msg, NULL, NULL);
2150 }
2151
2152
2153 /**
2154  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2155  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2156  *
2157  * Shut down driver interface and processing of driver events. Free
2158  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2159  */
2160 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2161 {
2162         struct wpa_driver_nl80211_data *drv = bss->drv;
2163
2164         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2165                    bss->ifname, drv->disabled_11b_rates);
2166
2167         bss->in_deinit = 1;
2168         if (drv->data_tx_status)
2169                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2170         if (drv->eapol_tx_sock >= 0)
2171                 close(drv->eapol_tx_sock);
2172
2173         if (bss->nl_preq)
2174                 wpa_driver_nl80211_probe_req_report(bss, 0);
2175         if (bss->added_if_into_bridge) {
2176                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2177                                     bss->ifname) < 0)
2178                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2179                                    "interface %s from bridge %s: %s",
2180                                    bss->ifname, bss->brname, strerror(errno));
2181                 if (drv->rtnl_sk)
2182                         nl80211_handle_destroy(drv->rtnl_sk);
2183         }
2184         if (bss->added_bridge) {
2185                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2186                                           0) < 0)
2187                         wpa_printf(MSG_INFO,
2188                                    "nl80211: Could not set bridge %s down",
2189                                    bss->brname);
2190                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2191                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2192                                    "bridge %s: %s",
2193                                    bss->brname, strerror(errno));
2194         }
2195
2196         nl80211_remove_monitor_interface(drv);
2197
2198         if (is_ap_interface(drv->nlmode))
2199                 wpa_driver_nl80211_del_beacon(drv);
2200
2201         if (drv->eapol_sock >= 0) {
2202                 eloop_unregister_read_sock(drv->eapol_sock);
2203                 close(drv->eapol_sock);
2204         }
2205
2206         if (drv->if_indices != drv->default_if_indices)
2207                 os_free(drv->if_indices);
2208
2209         if (drv->disabled_11b_rates)
2210                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2211
2212         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2213                                IF_OPER_UP);
2214         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2215         rfkill_deinit(drv->rfkill);
2216
2217         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2218
2219         if (!drv->start_iface_up)
2220                 (void) i802_set_iface_flags(bss, 0);
2221
2222         if (drv->addr_changed) {
2223                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2224                                           0) < 0) {
2225                         wpa_printf(MSG_DEBUG,
2226                                    "nl80211: Could not set interface down to restore permanent MAC address");
2227                 }
2228                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2229                                        drv->perm_addr) < 0) {
2230                         wpa_printf(MSG_DEBUG,
2231                                    "nl80211: Could not restore permanent MAC address");
2232                 }
2233         }
2234
2235         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2236                 if (!drv->hostapd || !drv->start_mode_ap)
2237                         wpa_driver_nl80211_set_mode(bss,
2238                                                     NL80211_IFTYPE_STATION);
2239                 nl80211_mgmt_unsubscribe(bss, "deinit");
2240         } else {
2241                 nl80211_mgmt_unsubscribe(bss, "deinit");
2242                 nl80211_del_p2pdev(bss);
2243         }
2244
2245         nl80211_destroy_bss(drv->first_bss);
2246
2247         os_free(drv->filter_ssids);
2248
2249         os_free(drv->auth_ie);
2250
2251         if (drv->in_interface_list)
2252                 dl_list_del(&drv->list);
2253
2254         os_free(drv->extended_capa);
2255         os_free(drv->extended_capa_mask);
2256         os_free(drv->first_bss);
2257         os_free(drv);
2258 }
2259
2260
2261 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2262 {
2263         switch (alg) {
2264         case WPA_ALG_WEP:
2265                 if (key_len == 5)
2266                         return WLAN_CIPHER_SUITE_WEP40;
2267                 return WLAN_CIPHER_SUITE_WEP104;
2268         case WPA_ALG_TKIP:
2269                 return WLAN_CIPHER_SUITE_TKIP;
2270         case WPA_ALG_CCMP:
2271                 return WLAN_CIPHER_SUITE_CCMP;
2272         case WPA_ALG_GCMP:
2273                 return WLAN_CIPHER_SUITE_GCMP;
2274         case WPA_ALG_CCMP_256:
2275                 return WLAN_CIPHER_SUITE_CCMP_256;
2276         case WPA_ALG_GCMP_256:
2277                 return WLAN_CIPHER_SUITE_GCMP_256;
2278         case WPA_ALG_IGTK:
2279                 return WLAN_CIPHER_SUITE_AES_CMAC;
2280         case WPA_ALG_BIP_GMAC_128:
2281                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2282         case WPA_ALG_BIP_GMAC_256:
2283                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2284         case WPA_ALG_BIP_CMAC_256:
2285                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2286         case WPA_ALG_SMS4:
2287                 return WLAN_CIPHER_SUITE_SMS4;
2288         case WPA_ALG_KRK:
2289                 return WLAN_CIPHER_SUITE_KRK;
2290         case WPA_ALG_NONE:
2291         case WPA_ALG_PMK:
2292                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2293                            alg);
2294                 return 0;
2295         }
2296
2297         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2298                    alg);
2299         return 0;
2300 }
2301
2302
2303 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2304 {
2305         switch (cipher) {
2306         case WPA_CIPHER_CCMP_256:
2307                 return WLAN_CIPHER_SUITE_CCMP_256;
2308         case WPA_CIPHER_GCMP_256:
2309                 return WLAN_CIPHER_SUITE_GCMP_256;
2310         case WPA_CIPHER_CCMP:
2311                 return WLAN_CIPHER_SUITE_CCMP;
2312         case WPA_CIPHER_GCMP:
2313                 return WLAN_CIPHER_SUITE_GCMP;
2314         case WPA_CIPHER_TKIP:
2315                 return WLAN_CIPHER_SUITE_TKIP;
2316         case WPA_CIPHER_WEP104:
2317                 return WLAN_CIPHER_SUITE_WEP104;
2318         case WPA_CIPHER_WEP40:
2319                 return WLAN_CIPHER_SUITE_WEP40;
2320         case WPA_CIPHER_GTK_NOT_USED:
2321                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2322         }
2323
2324         return 0;
2325 }
2326
2327
2328 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2329                                        int max_suites)
2330 {
2331         int num_suites = 0;
2332
2333         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2334                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2335         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2336                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2337         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2338                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2339         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2340                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2341         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2342                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2343         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2344                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2345         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2346                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2347
2348         return num_suites;
2349 }
2350
2351
2352 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2353                                   const u8 *key, size_t key_len)
2354 {
2355         struct nl_msg *msg;
2356         int ret;
2357
2358         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2359                 return 0;
2360
2361         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2362             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2363             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2364                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2365             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2366                 nl80211_nlmsg_clear(msg);
2367                 nlmsg_free(msg);
2368                 return -1;
2369         }
2370         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2371         if (ret) {
2372                 wpa_printf(MSG_DEBUG,
2373                            "nl80211: Key management set key failed: ret=%d (%s)",
2374                            ret, strerror(-ret));
2375         }
2376
2377         return ret;
2378 }
2379
2380
2381 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2382                                       enum wpa_alg alg, const u8 *addr,
2383                                       int key_idx, int set_tx,
2384                                       const u8 *seq, size_t seq_len,
2385                                       const u8 *key, size_t key_len)
2386 {
2387         struct wpa_driver_nl80211_data *drv = bss->drv;
2388         int ifindex;
2389         struct nl_msg *msg;
2390         int ret;
2391         int tdls = 0;
2392
2393         /* Ignore for P2P Device */
2394         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2395                 return 0;
2396
2397         ifindex = if_nametoindex(ifname);
2398         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2399                    "set_tx=%d seq_len=%lu key_len=%lu",
2400                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2401                    (unsigned long) seq_len, (unsigned long) key_len);
2402 #ifdef CONFIG_TDLS
2403         if (key_idx == -1) {
2404                 key_idx = 0;
2405                 tdls = 1;
2406         }
2407 #endif /* CONFIG_TDLS */
2408
2409         if (alg == WPA_ALG_PMK &&
2410             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2411                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2412                            __func__);
2413                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2414                 return ret;
2415         }
2416
2417         if (alg == WPA_ALG_NONE) {
2418                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2419                 if (!msg)
2420                         return -ENOBUFS;
2421         } else {
2422                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2423                 if (!msg ||
2424                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2425                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
2426                                 wpa_alg_to_cipher_suite(alg, key_len)))
2427                         goto fail;
2428                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2429         }
2430
2431         if (seq && seq_len) {
2432                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2433                         goto fail;
2434                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2435         }
2436
2437         if (addr && !is_broadcast_ether_addr(addr)) {
2438                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2439                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2440                         goto fail;
2441
2442                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2443                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2444                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2445                                         NL80211_KEYTYPE_GROUP))
2446                                 goto fail;
2447                 }
2448         } else if (addr && is_broadcast_ether_addr(addr)) {
2449                 struct nlattr *types;
2450
2451                 wpa_printf(MSG_DEBUG, "   broadcast key");
2452
2453                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2454                 if (!types ||
2455                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2456                         goto fail;
2457                 nla_nest_end(msg, types);
2458         }
2459         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2460                 goto fail;
2461
2462         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2463         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2464                 ret = 0;
2465         if (ret)
2466                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2467                            ret, strerror(-ret));
2468
2469         /*
2470          * If we failed or don't need to set the default TX key (below),
2471          * we're done here.
2472          */
2473         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2474                 return ret;
2475         if (is_ap_interface(drv->nlmode) && addr &&
2476             !is_broadcast_ether_addr(addr))
2477                 return ret;
2478
2479         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2480         if (!msg ||
2481             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2482             nla_put_flag(msg, alg == WPA_ALG_IGTK ?
2483                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2484                          NL80211_ATTR_KEY_DEFAULT))
2485                 goto fail;
2486         if (addr && is_broadcast_ether_addr(addr)) {
2487                 struct nlattr *types;
2488
2489                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2490                 if (!types ||
2491                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2492                         goto fail;
2493                 nla_nest_end(msg, types);
2494         } else if (addr) {
2495                 struct nlattr *types;
2496
2497                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2498                 if (!types ||
2499                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2500                         goto fail;
2501                 nla_nest_end(msg, types);
2502         }
2503
2504         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2505         if (ret == -ENOENT)
2506                 ret = 0;
2507         if (ret)
2508                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2509                            "err=%d %s)", ret, strerror(-ret));
2510         return ret;
2511
2512 fail:
2513         nl80211_nlmsg_clear(msg);
2514         nlmsg_free(msg);
2515         return -ENOBUFS;
2516 }
2517
2518
2519 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2520                       int key_idx, int defkey,
2521                       const u8 *seq, size_t seq_len,
2522                       const u8 *key, size_t key_len)
2523 {
2524         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2525         if (!key_attr)
2526                 return -1;
2527
2528         if (defkey && alg == WPA_ALG_IGTK) {
2529                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2530                         return -1;
2531         } else if (defkey) {
2532                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2533                         return -1;
2534         }
2535
2536         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2537             nla_put_u32(msg, NL80211_KEY_CIPHER,
2538                         wpa_alg_to_cipher_suite(alg, key_len)) ||
2539             (seq && seq_len &&
2540              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2541             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2542                 return -1;
2543
2544         nla_nest_end(msg, key_attr);
2545
2546         return 0;
2547 }
2548
2549
2550 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2551                                  struct nl_msg *msg)
2552 {
2553         int i, privacy = 0;
2554         struct nlattr *nl_keys, *nl_key;
2555
2556         for (i = 0; i < 4; i++) {
2557                 if (!params->wep_key[i])
2558                         continue;
2559                 privacy = 1;
2560                 break;
2561         }
2562         if (params->wps == WPS_MODE_PRIVACY)
2563                 privacy = 1;
2564         if (params->pairwise_suite &&
2565             params->pairwise_suite != WPA_CIPHER_NONE)
2566                 privacy = 1;
2567
2568         if (!privacy)
2569                 return 0;
2570
2571         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2572                 return -ENOBUFS;
2573
2574         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2575         if (!nl_keys)
2576                 return -ENOBUFS;
2577
2578         for (i = 0; i < 4; i++) {
2579                 if (!params->wep_key[i])
2580                         continue;
2581
2582                 nl_key = nla_nest_start(msg, i);
2583                 if (!nl_key ||
2584                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2585                             params->wep_key[i]) ||
2586                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2587                                 params->wep_key_len[i] == 5 ?
2588                                 WLAN_CIPHER_SUITE_WEP40 :
2589                                 WLAN_CIPHER_SUITE_WEP104) ||
2590                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2591                     (i == params->wep_tx_keyidx &&
2592                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2593                         return -ENOBUFS;
2594
2595                 nla_nest_end(msg, nl_key);
2596         }
2597         nla_nest_end(msg, nl_keys);
2598
2599         return 0;
2600 }
2601
2602
2603 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2604                             const u8 *addr, int cmd, u16 reason_code,
2605                             int local_state_change)
2606 {
2607         int ret;
2608         struct nl_msg *msg;
2609
2610         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2611             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2612             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2613             (local_state_change &&
2614              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2615                 nlmsg_free(msg);
2616                 return -1;
2617         }
2618
2619         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2620         if (ret) {
2621                 wpa_dbg(drv->ctx, MSG_DEBUG,
2622                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2623                         reason_code, ret, strerror(-ret));
2624         }
2625         return ret;
2626 }
2627
2628
2629 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2630                                          int reason_code)
2631 {
2632         int ret;
2633
2634         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2635         nl80211_mark_disconnected(drv);
2636         /* Disconnect command doesn't need BSSID - it uses cached value */
2637         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2638                                       reason_code, 0);
2639         /*
2640          * For locally generated disconnect, supplicant already generates a
2641          * DEAUTH event, so ignore the event from NL80211.
2642          */
2643         drv->ignore_next_local_disconnect = ret == 0;
2644
2645         return ret;
2646 }
2647
2648
2649 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2650                                              const u8 *addr, int reason_code)
2651 {
2652         struct wpa_driver_nl80211_data *drv = bss->drv;
2653         int ret;
2654
2655         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2656                 nl80211_mark_disconnected(drv);
2657                 return nl80211_leave_ibss(drv, 1);
2658         }
2659         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2660                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2661         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2662                    __func__, MAC2STR(addr), reason_code);
2663         nl80211_mark_disconnected(drv);
2664         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2665                                       reason_code, 0);
2666         /*
2667          * For locally generated deauthenticate, supplicant already generates a
2668          * DEAUTH event, so ignore the event from NL80211.
2669          */
2670         drv->ignore_next_local_deauth = ret == 0;
2671         return ret;
2672 }
2673
2674
2675 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2676                                      struct wpa_driver_auth_params *params)
2677 {
2678         int i;
2679
2680         drv->auth_freq = params->freq;
2681         drv->auth_alg = params->auth_alg;
2682         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2683         drv->auth_local_state_change = params->local_state_change;
2684         drv->auth_p2p = params->p2p;
2685
2686         if (params->bssid)
2687                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2688         else
2689                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2690
2691         if (params->ssid) {
2692                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2693                 drv->auth_ssid_len = params->ssid_len;
2694         } else
2695                 drv->auth_ssid_len = 0;
2696
2697
2698         os_free(drv->auth_ie);
2699         drv->auth_ie = NULL;
2700         drv->auth_ie_len = 0;
2701         if (params->ie) {
2702                 drv->auth_ie = os_malloc(params->ie_len);
2703                 if (drv->auth_ie) {
2704                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2705                         drv->auth_ie_len = params->ie_len;
2706                 }
2707         }
2708
2709         for (i = 0; i < 4; i++) {
2710                 if (params->wep_key[i] && params->wep_key_len[i] &&
2711                     params->wep_key_len[i] <= 16) {
2712                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2713                                   params->wep_key_len[i]);
2714                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2715                 } else
2716                         drv->auth_wep_key_len[i] = 0;
2717         }
2718 }
2719
2720
2721 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2722 {
2723         struct wpa_driver_nl80211_data *drv = bss->drv;
2724
2725         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2726                 return;
2727
2728         /*
2729          * Looks like we failed to unmask 11b rates previously. This could
2730          * happen, e.g., if the interface was down at the point in time when a
2731          * P2P group was terminated.
2732          */
2733         wpa_printf(MSG_DEBUG,
2734                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2735                    bss->ifname);
2736         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2737 }
2738
2739
2740 static int wpa_driver_nl80211_authenticate(
2741         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2742 {
2743         struct wpa_driver_nl80211_data *drv = bss->drv;
2744         int ret = -1, i;
2745         struct nl_msg *msg;
2746         enum nl80211_auth_type type;
2747         enum nl80211_iftype nlmode;
2748         int count = 0;
2749         int is_retry;
2750
2751         nl80211_unmask_11b_rates(bss);
2752
2753         is_retry = drv->retry_auth;
2754         drv->retry_auth = 0;
2755         drv->ignore_deauth_event = 0;
2756
2757         nl80211_mark_disconnected(drv);
2758         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2759         if (params->bssid)
2760                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2761         else
2762                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2763         /* FIX: IBSS mode */
2764         nlmode = params->p2p ?
2765                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2766         if (drv->nlmode != nlmode &&
2767             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2768                 return -1;
2769
2770 retry:
2771         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2772                    drv->ifindex);
2773
2774         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2775         if (!msg)
2776                 goto fail;
2777
2778         for (i = 0; i < 4; i++) {
2779                 if (!params->wep_key[i])
2780                         continue;
2781                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2782                                            NULL, i,
2783                                            i == params->wep_tx_keyidx, NULL, 0,
2784                                            params->wep_key[i],
2785                                            params->wep_key_len[i]);
2786                 if (params->wep_tx_keyidx != i)
2787                         continue;
2788                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2789                                params->wep_key[i], params->wep_key_len[i]))
2790                         goto fail;
2791         }
2792
2793         if (params->bssid) {
2794                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2795                            MAC2STR(params->bssid));
2796                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2797                         goto fail;
2798         }
2799         if (params->freq) {
2800                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2801                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
2802                         goto fail;
2803         }
2804         if (params->ssid) {
2805                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2806                                   params->ssid, params->ssid_len);
2807                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
2808                             params->ssid))
2809                         goto fail;
2810         }
2811         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2812         if (params->ie &&
2813             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
2814                 goto fail;
2815         if (params->sae_data) {
2816                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
2817                             params->sae_data_len);
2818                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
2819                             params->sae_data))
2820                         goto fail;
2821         }
2822         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2823                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2824         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2825                 type = NL80211_AUTHTYPE_SHARED_KEY;
2826         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2827                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2828         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2829                 type = NL80211_AUTHTYPE_FT;
2830         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
2831                 type = NL80211_AUTHTYPE_SAE;
2832         else
2833                 goto fail;
2834         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2835         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
2836                 goto fail;
2837         if (params->local_state_change) {
2838                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2839                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
2840                         goto fail;
2841         }
2842
2843         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2844         msg = NULL;
2845         if (ret) {
2846                 wpa_dbg(drv->ctx, MSG_DEBUG,
2847                         "nl80211: MLME command failed (auth): ret=%d (%s)",
2848                         ret, strerror(-ret));
2849                 count++;
2850                 if (ret == -EALREADY && count == 1 && params->bssid &&
2851                     !params->local_state_change) {
2852                         /*
2853                          * mac80211 does not currently accept new
2854                          * authentication if we are already authenticated. As a
2855                          * workaround, force deauthentication and try again.
2856                          */
2857                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2858                                    "after forced deauthentication");
2859                         drv->ignore_deauth_event = 1;
2860                         wpa_driver_nl80211_deauthenticate(
2861                                 bss, params->bssid,
2862                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2863                         nlmsg_free(msg);
2864                         goto retry;
2865                 }
2866
2867                 if (ret == -ENOENT && params->freq && !is_retry) {
2868                         /*
2869                          * cfg80211 has likely expired the BSS entry even
2870                          * though it was previously available in our internal
2871                          * BSS table. To recover quickly, start a single
2872                          * channel scan on the specified channel.
2873                          */
2874                         struct wpa_driver_scan_params scan;
2875                         int freqs[2];
2876
2877                         os_memset(&scan, 0, sizeof(scan));
2878                         scan.num_ssids = 1;
2879                         if (params->ssid) {
2880                                 scan.ssids[0].ssid = params->ssid;
2881                                 scan.ssids[0].ssid_len = params->ssid_len;
2882                         }
2883                         freqs[0] = params->freq;
2884                         freqs[1] = 0;
2885                         scan.freqs = freqs;
2886                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
2887                                    "channel scan to refresh cfg80211 BSS "
2888                                    "entry");
2889                         ret = wpa_driver_nl80211_scan(bss, &scan);
2890                         if (ret == 0) {
2891                                 nl80211_copy_auth_params(drv, params);
2892                                 drv->scan_for_auth = 1;
2893                         }
2894                 } else if (is_retry) {
2895                         /*
2896                          * Need to indicate this with an event since the return
2897                          * value from the retry is not delivered to core code.
2898                          */
2899                         union wpa_event_data event;
2900                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
2901                                    "failed");
2902                         os_memset(&event, 0, sizeof(event));
2903                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
2904                                   ETH_ALEN);
2905                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
2906                                              &event);
2907                 }
2908         } else {
2909                 wpa_printf(MSG_DEBUG,
2910                            "nl80211: Authentication request send successfully");
2911         }
2912
2913 fail:
2914         nlmsg_free(msg);
2915         return ret;
2916 }
2917
2918
2919 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
2920 {
2921         struct wpa_driver_auth_params params;
2922         struct i802_bss *bss = drv->first_bss;
2923         int i;
2924
2925         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
2926
2927         os_memset(&params, 0, sizeof(params));
2928         params.freq = drv->auth_freq;
2929         params.auth_alg = drv->auth_alg;
2930         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
2931         params.local_state_change = drv->auth_local_state_change;
2932         params.p2p = drv->auth_p2p;
2933
2934         if (!is_zero_ether_addr(drv->auth_bssid_))
2935                 params.bssid = drv->auth_bssid_;
2936
2937         if (drv->auth_ssid_len) {
2938                 params.ssid = drv->auth_ssid;
2939                 params.ssid_len = drv->auth_ssid_len;
2940         }
2941
2942         params.ie = drv->auth_ie;
2943         params.ie_len = drv->auth_ie_len;
2944
2945         for (i = 0; i < 4; i++) {
2946                 if (drv->auth_wep_key_len[i]) {
2947                         params.wep_key[i] = drv->auth_wep_key[i];
2948                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
2949                 }
2950         }
2951
2952         drv->retry_auth = 1;
2953         return wpa_driver_nl80211_authenticate(bss, &params);
2954 }
2955
2956
2957 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
2958                                          const void *data, size_t len,
2959                                          int encrypt, int noack,
2960                                          unsigned int freq, int no_cck,
2961                                          int offchanok, unsigned int wait_time)
2962 {
2963         struct wpa_driver_nl80211_data *drv = bss->drv;
2964         u64 cookie;
2965         int res;
2966
2967         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
2968                 freq = nl80211_get_assoc_freq(drv);
2969                 wpa_printf(MSG_DEBUG,
2970                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
2971                            freq);
2972         }
2973         if (freq == 0) {
2974                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
2975                            bss->freq);
2976                 freq = bss->freq;
2977         }
2978
2979         if (drv->use_monitor) {
2980                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
2981                            freq, bss->freq);
2982                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
2983         }
2984
2985         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
2986         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
2987                                      &cookie, no_cck, noack, offchanok);
2988         if (res == 0 && !noack) {
2989                 const struct ieee80211_mgmt *mgmt;
2990                 u16 fc;
2991
2992                 mgmt = (const struct ieee80211_mgmt *) data;
2993                 fc = le_to_host16(mgmt->frame_control);
2994                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2995                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
2996                         wpa_printf(MSG_MSGDUMP,
2997                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
2998                                    (long long unsigned int)
2999                                    drv->send_action_cookie,
3000                                    (long long unsigned int) cookie);
3001                         drv->send_action_cookie = cookie;
3002                 }
3003         }
3004
3005         return res;
3006 }
3007
3008
3009 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3010                                         size_t data_len, int noack,
3011                                         unsigned int freq, int no_cck,
3012                                         int offchanok,
3013                                         unsigned int wait_time)
3014 {
3015         struct wpa_driver_nl80211_data *drv = bss->drv;
3016         struct ieee80211_mgmt *mgmt;
3017         int encrypt = 1;
3018         u16 fc;
3019
3020         mgmt = (struct ieee80211_mgmt *) data;
3021         fc = le_to_host16(mgmt->frame_control);
3022         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3023                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3024                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3025                    fc, fc2str(fc), drv->nlmode);
3026
3027         if ((is_sta_interface(drv->nlmode) ||
3028              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3029             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3030             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3031                 /*
3032                  * The use of last_mgmt_freq is a bit of a hack,
3033                  * but it works due to the single-threaded nature
3034                  * of wpa_supplicant.
3035                  */
3036                 if (freq == 0) {
3037                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3038                                    drv->last_mgmt_freq);
3039                         freq = drv->last_mgmt_freq;
3040                 }
3041                 return nl80211_send_frame_cmd(bss, freq, 0,
3042                                               data, data_len, NULL, 1, noack,
3043                                               1);
3044         }
3045
3046         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3047                 if (freq == 0) {
3048                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3049                                    bss->freq);
3050                         freq = bss->freq;
3051                 }
3052                 return nl80211_send_frame_cmd(bss, freq,
3053                                               (int) freq == bss->freq ? 0 :
3054                                               wait_time,
3055                                               data, data_len,
3056                                               &drv->send_action_cookie,
3057                                               no_cck, noack, offchanok);
3058         }
3059
3060         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3061             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3062                 /*
3063                  * Only one of the authentication frame types is encrypted.
3064                  * In order for static WEP encryption to work properly (i.e.,
3065                  * to not encrypt the frame), we need to tell mac80211 about
3066                  * the frames that must not be encrypted.
3067                  */
3068                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3069                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3070                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3071                         encrypt = 0;
3072         }
3073
3074         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3075         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3076                                              noack, freq, no_cck, offchanok,
3077                                              wait_time);
3078 }
3079
3080
3081 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3082 {
3083         u8 rates[NL80211_MAX_SUPP_RATES];
3084         u8 rates_len = 0;
3085         int i;
3086
3087         if (!basic_rates)
3088                 return 0;
3089
3090         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3091                 rates[rates_len++] = basic_rates[i] / 5;
3092
3093         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3094 }
3095
3096
3097 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3098                            int slot, int ht_opmode, int ap_isolate,
3099                            const int *basic_rates)
3100 {
3101         struct wpa_driver_nl80211_data *drv = bss->drv;
3102         struct nl_msg *msg;
3103
3104         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3105             (cts >= 0 &&
3106              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3107             (preamble >= 0 &&
3108              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3109             (slot >= 0 &&
3110              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3111             (ht_opmode >= 0 &&
3112              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3113             (ap_isolate >= 0 &&
3114              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3115             nl80211_put_basic_rates(msg, basic_rates)) {
3116                 nlmsg_free(msg);
3117                 return -ENOBUFS;
3118         }
3119
3120         return send_and_recv_msgs(drv, msg, NULL, NULL);
3121 }
3122
3123
3124 static int wpa_driver_nl80211_set_acl(void *priv,
3125                                       struct hostapd_acl_params *params)
3126 {
3127         struct i802_bss *bss = priv;
3128         struct wpa_driver_nl80211_data *drv = bss->drv;
3129         struct nl_msg *msg;
3130         struct nlattr *acl;
3131         unsigned int i;
3132         int ret;
3133
3134         if (!(drv->capa.max_acl_mac_addrs))
3135                 return -ENOTSUP;
3136
3137         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3138                 return -ENOTSUP;
3139
3140         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3141                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3142
3143         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3144             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3145                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3146                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3147             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
3148                 nlmsg_free(msg);
3149                 return -ENOMEM;
3150         }
3151
3152         for (i = 0; i < params->num_mac_acl; i++) {
3153                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3154                         nlmsg_free(msg);
3155                         return -ENOMEM;
3156                 }
3157         }
3158
3159         nla_nest_end(msg, acl);
3160
3161         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3162         if (ret) {
3163                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3164                            ret, strerror(-ret));
3165         }
3166
3167         return ret;
3168 }
3169
3170
3171 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3172 {
3173         if (beacon_int > 0) {
3174                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3175                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3176                                    beacon_int);
3177         }
3178
3179         return 0;
3180 }
3181
3182
3183 static int wpa_driver_nl80211_set_ap(void *priv,
3184                                      struct wpa_driver_ap_params *params)
3185 {
3186         struct i802_bss *bss = priv;
3187         struct wpa_driver_nl80211_data *drv = bss->drv;
3188         struct nl_msg *msg;
3189         u8 cmd = NL80211_CMD_NEW_BEACON;
3190         int ret;
3191         int beacon_set;
3192         int num_suites;
3193         int smps_mode;
3194         u32 suites[10], suite;
3195         u32 ver;
3196
3197         beacon_set = bss->beacon_set;
3198
3199         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3200                    beacon_set);
3201         if (beacon_set)
3202                 cmd = NL80211_CMD_SET_BEACON;
3203
3204         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3205                     params->head, params->head_len);
3206         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3207                     params->tail, params->tail_len);
3208         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3209         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3210         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3211         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3212                           params->ssid, params->ssid_len);
3213         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3214             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3215                     params->head) ||
3216             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3217                     params->tail) ||
3218             nl80211_put_beacon_int(msg, params->beacon_int) ||
3219             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3220             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3221                 goto fail;
3222         if (params->proberesp && params->proberesp_len) {
3223                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3224                             params->proberesp, params->proberesp_len);
3225                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3226                             params->proberesp))
3227                         goto fail;
3228         }
3229         switch (params->hide_ssid) {
3230         case NO_SSID_HIDING:
3231                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3232                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3233                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3234                         goto fail;
3235                 break;
3236         case HIDDEN_SSID_ZERO_LEN:
3237                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3238                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3239                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3240                         goto fail;
3241                 break;
3242         case HIDDEN_SSID_ZERO_CONTENTS:
3243                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3244                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3245                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3246                         goto fail;
3247                 break;
3248         }
3249         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3250         if (params->privacy &&
3251             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3252                 goto fail;
3253         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3254         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3255             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3256                 /* Leave out the attribute */
3257         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3258                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3259                                 NL80211_AUTHTYPE_SHARED_KEY))
3260                         goto fail;
3261         } else {
3262                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3263                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3264                         goto fail;
3265         }
3266
3267         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3268         ver = 0;
3269         if (params->wpa_version & WPA_PROTO_WPA)
3270                 ver |= NL80211_WPA_VERSION_1;
3271         if (params->wpa_version & WPA_PROTO_RSN)
3272                 ver |= NL80211_WPA_VERSION_2;
3273         if (ver &&
3274             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3275                 goto fail;
3276
3277         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3278                    params->key_mgmt_suites);
3279         num_suites = 0;
3280         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3281                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3282         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3283                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3284         if (num_suites &&
3285             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3286                     suites))
3287                 goto fail;
3288
3289         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3290             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3291             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3292                 goto fail;
3293
3294         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3295                    params->pairwise_ciphers);
3296         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3297                                                  suites, ARRAY_SIZE(suites));
3298         if (num_suites &&
3299             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3300                     num_suites * sizeof(u32), suites))
3301                 goto fail;
3302
3303         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3304                    params->group_cipher);
3305         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3306         if (suite &&
3307             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3308                 goto fail;
3309
3310         switch (params->smps_mode) {
3311         case HT_CAP_INFO_SMPS_DYNAMIC:
3312                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3313                 smps_mode = NL80211_SMPS_DYNAMIC;
3314                 break;
3315         case HT_CAP_INFO_SMPS_STATIC:
3316                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3317                 smps_mode = NL80211_SMPS_STATIC;
3318                 break;
3319         default:
3320                 /* invalid - fallback to smps off */
3321         case HT_CAP_INFO_SMPS_DISABLED:
3322                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3323                 smps_mode = NL80211_SMPS_OFF;
3324                 break;
3325         }
3326         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3327                 goto fail;
3328
3329         if (params->beacon_ies) {
3330                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3331                                 params->beacon_ies);
3332                 if (nla_put(msg, NL80211_ATTR_IE,
3333                             wpabuf_len(params->beacon_ies),
3334                             wpabuf_head(params->beacon_ies)))
3335                         goto fail;
3336         }
3337         if (params->proberesp_ies) {
3338                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3339                                 params->proberesp_ies);
3340                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3341                             wpabuf_len(params->proberesp_ies),
3342                             wpabuf_head(params->proberesp_ies)))
3343                         goto fail;
3344         }
3345         if (params->assocresp_ies) {
3346                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3347                                 params->assocresp_ies);
3348                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3349                             wpabuf_len(params->assocresp_ies),
3350                             wpabuf_head(params->assocresp_ies)))
3351                         goto fail;
3352         }
3353
3354         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3355                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3356                            params->ap_max_inactivity);
3357                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3358                                 params->ap_max_inactivity))
3359                         goto fail;
3360         }
3361
3362         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3363         if (ret) {
3364                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3365                            ret, strerror(-ret));
3366         } else {
3367                 bss->beacon_set = 1;
3368                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3369                                 params->short_slot_time, params->ht_opmode,
3370                                 params->isolate, params->basic_rates);
3371                 if (beacon_set && params->freq &&
3372                     params->freq->bandwidth != bss->bandwidth) {
3373                         wpa_printf(MSG_DEBUG,
3374                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3375                                    bss->ifname, bss->bandwidth,
3376                                    params->freq->bandwidth);
3377                         ret = nl80211_set_channel(bss, params->freq, 1);
3378                         if (ret) {
3379                                 wpa_printf(MSG_DEBUG,
3380                                            "nl80211: Frequency set failed: %d (%s)",
3381                                            ret, strerror(-ret));
3382                         } else {
3383                                 wpa_printf(MSG_DEBUG,
3384                                            "nl80211: Frequency set succeeded for ht2040 coex");
3385                                 bss->bandwidth = params->freq->bandwidth;
3386                         }
3387                 } else if (!beacon_set) {
3388                         /*
3389                          * cfg80211 updates the driver on frequence change in AP
3390                          * mode only at the point when beaconing is started, so
3391                          * set the initial value here.
3392                          */
3393                         bss->bandwidth = params->freq->bandwidth;
3394                 }
3395         }
3396         return ret;
3397 fail:
3398         nlmsg_free(msg);
3399         return -ENOBUFS;
3400 }
3401
3402
3403 static int nl80211_put_freq_params(struct nl_msg *msg,
3404                                    const struct hostapd_freq_params *freq)
3405 {
3406         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3407         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3408                 return -ENOBUFS;
3409
3410         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3411         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3412
3413         if (freq->vht_enabled) {
3414                 enum nl80211_chan_width cw;
3415
3416                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3417                 switch (freq->bandwidth) {
3418                 case 20:
3419                         cw = NL80211_CHAN_WIDTH_20;
3420                         break;
3421                 case 40:
3422                         cw = NL80211_CHAN_WIDTH_40;
3423                         break;
3424                 case 80:
3425                         if (freq->center_freq2)
3426                                 cw = NL80211_CHAN_WIDTH_80P80;
3427                         else
3428                                 cw = NL80211_CHAN_WIDTH_80;
3429                         break;
3430                 case 160:
3431                         cw = NL80211_CHAN_WIDTH_160;
3432                         break;
3433                 default:
3434                         return -EINVAL;
3435                 }
3436
3437                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3438                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3439                            freq->center_freq1);
3440                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3441                            freq->center_freq2);
3442                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3443                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3444                                 freq->center_freq1) ||
3445                     (freq->center_freq2 &&
3446                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3447                                  freq->center_freq2)))
3448                         return -ENOBUFS;
3449         } else if (freq->ht_enabled) {
3450                 enum nl80211_channel_type ct;
3451
3452                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3453                            freq->sec_channel_offset);
3454                 switch (freq->sec_channel_offset) {
3455                 case -1:
3456                         ct = NL80211_CHAN_HT40MINUS;
3457                         break;
3458                 case 1:
3459                         ct = NL80211_CHAN_HT40PLUS;
3460                         break;
3461                 default:
3462                         ct = NL80211_CHAN_HT20;
3463                         break;
3464                 }
3465
3466                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3467                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3468                         return -ENOBUFS;
3469         }
3470         return 0;
3471 }
3472
3473
3474 static int nl80211_set_channel(struct i802_bss *bss,
3475                                struct hostapd_freq_params *freq, int set_chan)
3476 {
3477         struct wpa_driver_nl80211_data *drv = bss->drv;
3478         struct nl_msg *msg;
3479         int ret;
3480
3481         wpa_printf(MSG_DEBUG,
3482                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3483                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3484                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3485
3486         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3487                               NL80211_CMD_SET_WIPHY);
3488         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3489                 nlmsg_free(msg);
3490                 return -1;
3491         }
3492
3493         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3494         if (ret == 0) {
3495                 bss->freq = freq->freq;
3496                 return 0;
3497         }
3498         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3499                    "%d (%s)", freq->freq, ret, strerror(-ret));
3500         return -1;
3501 }
3502
3503
3504 static u32 sta_flags_nl80211(int flags)
3505 {
3506         u32 f = 0;
3507
3508         if (flags & WPA_STA_AUTHORIZED)
3509                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3510         if (flags & WPA_STA_WMM)
3511                 f |= BIT(NL80211_STA_FLAG_WME);
3512         if (flags & WPA_STA_SHORT_PREAMBLE)
3513                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3514         if (flags & WPA_STA_MFP)
3515                 f |= BIT(NL80211_STA_FLAG_MFP);
3516         if (flags & WPA_STA_TDLS_PEER)
3517                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3518         if (flags & WPA_STA_AUTHENTICATED)
3519                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3520
3521         return f;
3522 }
3523
3524
3525 #ifdef CONFIG_MESH
3526 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3527 {
3528         switch (state) {
3529         case PLINK_LISTEN:
3530                 return NL80211_PLINK_LISTEN;
3531         case PLINK_OPEN_SENT:
3532                 return NL80211_PLINK_OPN_SNT;
3533         case PLINK_OPEN_RCVD:
3534                 return NL80211_PLINK_OPN_RCVD;
3535         case PLINK_CNF_RCVD:
3536                 return NL80211_PLINK_CNF_RCVD;
3537         case PLINK_ESTAB:
3538                 return NL80211_PLINK_ESTAB;
3539         case PLINK_HOLDING:
3540                 return NL80211_PLINK_HOLDING;
3541         case PLINK_BLOCKED:
3542                 return NL80211_PLINK_BLOCKED;
3543         default:
3544                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3545                            state);
3546         }
3547         return -1;
3548 }
3549 #endif /* CONFIG_MESH */
3550
3551
3552 static int wpa_driver_nl80211_sta_add(void *priv,
3553                                       struct hostapd_sta_add_params *params)
3554 {
3555         struct i802_bss *bss = priv;
3556         struct wpa_driver_nl80211_data *drv = bss->drv;
3557         struct nl_msg *msg;
3558         struct nl80211_sta_flag_update upd;
3559         int ret = -ENOBUFS;
3560
3561         if ((params->flags & WPA_STA_TDLS_PEER) &&
3562             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3563                 return -EOPNOTSUPP;
3564
3565         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3566                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3567         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3568                               NL80211_CMD_NEW_STATION);
3569         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3570                 goto fail;
3571
3572         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
3573                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3574                             params->supp_rates, params->supp_rates_len);
3575                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3576                            params->capability);
3577                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3578                             params->supp_rates_len, params->supp_rates) ||
3579                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3580                                 params->capability))
3581                         goto fail;
3582
3583                 if (params->ht_capabilities) {
3584                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3585                                     (u8 *) params->ht_capabilities,
3586                                     sizeof(*params->ht_capabilities));
3587                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3588                                     sizeof(*params->ht_capabilities),
3589                                     params->ht_capabilities))
3590                                 goto fail;
3591                 }
3592
3593                 if (params->vht_capabilities) {
3594                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3595                                     (u8 *) params->vht_capabilities,
3596                                     sizeof(*params->vht_capabilities));
3597                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3598                                     sizeof(*params->vht_capabilities),
3599                                     params->vht_capabilities))
3600                                 goto fail;
3601                 }
3602
3603                 if (params->ext_capab) {
3604                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3605                                     params->ext_capab, params->ext_capab_len);
3606                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3607                                     params->ext_capab_len, params->ext_capab))
3608                                 goto fail;
3609                 }
3610         }
3611         if (!params->set) {
3612                 if (params->aid) {
3613                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3614                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3615                                 goto fail;
3616                 } else {
3617                         /*
3618                          * cfg80211 validates that AID is non-zero, so we have
3619                          * to make this a non-zero value for the TDLS case where
3620                          * a dummy STA entry is used for now.
3621                          */
3622                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
3623                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3624                                 goto fail;
3625                 }
3626                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3627                            params->listen_interval);
3628                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3629                                 params->listen_interval))
3630                         goto fail;
3631         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3632                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3633                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3634                         goto fail;
3635         }
3636
3637         if (params->vht_opmode_enabled) {
3638                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3639                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3640                                params->vht_opmode))
3641                         goto fail;
3642         }
3643
3644         if (params->supp_channels) {
3645                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3646                             params->supp_channels, params->supp_channels_len);
3647                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3648                             params->supp_channels_len, params->supp_channels))
3649                         goto fail;
3650         }
3651
3652         if (params->supp_oper_classes) {
3653                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3654                             params->supp_oper_classes,
3655                             params->supp_oper_classes_len);
3656                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3657                             params->supp_oper_classes_len,
3658                             params->supp_oper_classes))
3659                         goto fail;
3660         }
3661
3662         os_memset(&upd, 0, sizeof(upd));
3663         upd.set = sta_flags_nl80211(params->flags);
3664         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3665         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3666                    upd.set, upd.mask);
3667         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3668                 goto fail;
3669
3670 #ifdef CONFIG_MESH
3671         if (params->plink_state &&
3672             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3673                        sta_plink_state_nl80211(params->plink_state)))
3674                 goto fail;
3675 #endif /* CONFIG_MESH */
3676
3677         if (params->flags & WPA_STA_WMM) {
3678                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3679
3680                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3681                 if (!wme ||
3682                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3683                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3684                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3685                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3686                                WMM_QOSINFO_STA_SP_MASK))
3687                         goto fail;
3688                 nla_nest_end(msg, wme);
3689         }
3690
3691         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3692         msg = NULL;
3693         if (ret)
3694                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3695                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3696                            strerror(-ret));
3697         if (ret == -EEXIST)
3698                 ret = 0;
3699 fail:
3700         nlmsg_free(msg);
3701         return ret;
3702 }
3703
3704
3705 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3706 {
3707 #ifdef CONFIG_LIBNL3_ROUTE
3708         struct wpa_driver_nl80211_data *drv = bss->drv;
3709         struct rtnl_neigh *rn;
3710         struct nl_addr *nl_addr;
3711         int err;
3712
3713         rn = rtnl_neigh_alloc();
3714         if (!rn)
3715                 return;
3716
3717         rtnl_neigh_set_family(rn, AF_BRIDGE);
3718         rtnl_neigh_set_ifindex(rn, bss->ifindex);
3719         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
3720         if (!nl_addr) {
3721                 rtnl_neigh_put(rn);
3722                 return;
3723         }
3724         rtnl_neigh_set_lladdr(rn, nl_addr);
3725
3726         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
3727         if (err < 0) {
3728                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
3729                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
3730                            bss->ifindex, nl_geterror(err));
3731         } else {
3732                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
3733                            MACSTR, MAC2STR(addr));
3734         }
3735
3736         nl_addr_put(nl_addr);
3737         rtnl_neigh_put(rn);
3738 #endif /* CONFIG_LIBNL3_ROUTE */
3739 }
3740
3741
3742 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
3743                                          int deauth, u16 reason_code)
3744 {
3745         struct wpa_driver_nl80211_data *drv = bss->drv;
3746         struct nl_msg *msg;
3747         int ret;
3748
3749         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
3750             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
3751             (deauth == 0 &&
3752              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3753                         WLAN_FC_STYPE_DISASSOC)) ||
3754             (deauth == 1 &&
3755              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3756                         WLAN_FC_STYPE_DEAUTH)) ||
3757             (reason_code &&
3758              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
3759                 nlmsg_free(msg);
3760                 return -ENOBUFS;
3761         }
3762
3763         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3764         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
3765                    " --> %d (%s)",
3766                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
3767
3768         if (drv->rtnl_sk)
3769                 rtnl_neigh_delete_fdb_entry(bss, addr);
3770
3771         if (ret == -ENOENT)
3772                 return 0;
3773         return ret;
3774 }
3775
3776
3777 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
3778 {
3779         struct nl_msg *msg;
3780         struct wpa_driver_nl80211_data *drv2;
3781
3782         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3783
3784         /* stop listening for EAPOL on this interface */
3785         dl_list_for_each(drv2, &drv->global->interfaces,
3786                          struct wpa_driver_nl80211_data, list)
3787                 del_ifidx(drv2, ifidx);
3788
3789         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
3790         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3791                 return;
3792         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3793 }
3794
3795
3796 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
3797 {
3798         switch (mode) {
3799         case NL80211_IFTYPE_ADHOC:
3800                 return "ADHOC";
3801         case NL80211_IFTYPE_STATION:
3802                 return "STATION";
3803         case NL80211_IFTYPE_AP:
3804                 return "AP";
3805         case NL80211_IFTYPE_AP_VLAN:
3806                 return "AP_VLAN";
3807         case NL80211_IFTYPE_WDS:
3808                 return "WDS";
3809         case NL80211_IFTYPE_MONITOR:
3810                 return "MONITOR";
3811         case NL80211_IFTYPE_MESH_POINT:
3812                 return "MESH_POINT";
3813         case NL80211_IFTYPE_P2P_CLIENT:
3814                 return "P2P_CLIENT";
3815         case NL80211_IFTYPE_P2P_GO:
3816                 return "P2P_GO";
3817         case NL80211_IFTYPE_P2P_DEVICE:
3818                 return "P2P_DEVICE";
3819         default:
3820                 return "unknown";
3821         }
3822 }
3823
3824
3825 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3826                                      const char *ifname,
3827                                      enum nl80211_iftype iftype,
3828                                      const u8 *addr, int wds,
3829                                      int (*handler)(struct nl_msg *, void *),
3830                                      void *arg)
3831 {
3832         struct nl_msg *msg;
3833         int ifidx;
3834         int ret = -ENOBUFS;
3835
3836         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
3837                    iftype, nl80211_iftype_str(iftype));
3838
3839         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
3840         if (!msg ||
3841             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
3842             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
3843                 goto fail;
3844
3845         if (iftype == NL80211_IFTYPE_MONITOR) {
3846                 struct nlattr *flags;
3847
3848                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
3849                 if (!flags ||
3850                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
3851                         goto fail;
3852
3853                 nla_nest_end(msg, flags);
3854         } else if (wds) {
3855                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
3856                         goto fail;
3857         }
3858
3859         /*
3860          * Tell cfg80211 that the interface belongs to the socket that created
3861          * it, and the interface should be deleted when the socket is closed.
3862          */
3863         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
3864                 goto fail;
3865
3866         ret = send_and_recv_msgs(drv, msg, handler, arg);
3867         msg = NULL;
3868         if (ret) {
3869         fail:
3870                 nlmsg_free(msg);
3871                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3872                            ifname, ret, strerror(-ret));
3873                 return ret;
3874         }
3875
3876         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
3877                 return 0;
3878
3879         ifidx = if_nametoindex(ifname);
3880         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3881                    ifname, ifidx);
3882
3883         if (ifidx <= 0)
3884                 return -1;
3885
3886         /*
3887          * Some virtual interfaces need to process EAPOL packets and events on
3888          * the parent interface. This is used mainly with hostapd.
3889          */
3890         if (drv->hostapd ||
3891             iftype == NL80211_IFTYPE_AP_VLAN ||
3892             iftype == NL80211_IFTYPE_WDS ||
3893             iftype == NL80211_IFTYPE_MONITOR) {
3894                 /* start listening for EAPOL on this interface */
3895                 add_ifidx(drv, ifidx);
3896         }
3897
3898         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3899             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
3900                 nl80211_remove_iface(drv, ifidx);
3901                 return -1;
3902         }
3903
3904         return ifidx;
3905 }
3906
3907
3908 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3909                          const char *ifname, enum nl80211_iftype iftype,
3910                          const u8 *addr, int wds,
3911                          int (*handler)(struct nl_msg *, void *),
3912                          void *arg, int use_existing)
3913 {
3914         int ret;
3915
3916         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
3917                                         arg);
3918
3919         /* if error occurred and interface exists already */
3920         if (ret == -ENFILE && if_nametoindex(ifname)) {
3921                 if (use_existing) {
3922                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
3923                                    ifname);
3924                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3925                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
3926                                                addr) < 0 &&
3927                             (linux_set_iface_flags(drv->global->ioctl_sock,
3928                                                    ifname, 0) < 0 ||
3929                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
3930                                                 addr) < 0 ||
3931                              linux_set_iface_flags(drv->global->ioctl_sock,
3932                                                    ifname, 1) < 0))
3933                                         return -1;
3934                         return -ENFILE;
3935                 }
3936                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3937
3938                 /* Try to remove the interface that was already there. */
3939                 nl80211_remove_iface(drv, if_nametoindex(ifname));
3940
3941                 /* Try to create the interface again */
3942                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3943                                                 wds, handler, arg);
3944         }
3945
3946         if (ret >= 0 && is_p2p_net_interface(iftype)) {
3947                 wpa_printf(MSG_DEBUG,
3948                            "nl80211: Interface %s created for P2P - disable 11b rates",
3949                            ifname);
3950                 nl80211_disable_11b_rates(drv, ret, 1);
3951         }
3952
3953         return ret;
3954 }
3955
3956
3957 static int nl80211_setup_ap(struct i802_bss *bss)
3958 {
3959         struct wpa_driver_nl80211_data *drv = bss->drv;
3960
3961         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
3962                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
3963
3964         /*
3965          * Disable Probe Request reporting unless we need it in this way for
3966          * devices that include the AP SME, in the other case (unless using
3967          * monitor iface) we'll get it through the nl_mgmt socket instead.
3968          */
3969         if (!drv->device_ap_sme)
3970                 wpa_driver_nl80211_probe_req_report(bss, 0);
3971
3972         if (!drv->device_ap_sme && !drv->use_monitor)
3973                 if (nl80211_mgmt_subscribe_ap(bss))
3974                         return -1;
3975
3976         if (drv->device_ap_sme && !drv->use_monitor)
3977                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
3978                         return -1;
3979
3980         if (!drv->device_ap_sme && drv->use_monitor &&
3981             nl80211_create_monitor_interface(drv) &&
3982             !drv->device_ap_sme)
3983                 return -1;
3984
3985         if (drv->device_ap_sme &&
3986             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
3987                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
3988                            "Probe Request frame reporting in AP mode");
3989                 /* Try to survive without this */
3990         }
3991
3992         return 0;
3993 }
3994
3995
3996 static void nl80211_teardown_ap(struct i802_bss *bss)
3997 {
3998         struct wpa_driver_nl80211_data *drv = bss->drv;
3999
4000         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4001                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4002         if (drv->device_ap_sme) {
4003                 wpa_driver_nl80211_probe_req_report(bss, 0);
4004                 if (!drv->use_monitor)
4005                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4006         } else if (drv->use_monitor)
4007                 nl80211_remove_monitor_interface(drv);
4008         else
4009                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4010
4011         bss->beacon_set = 0;
4012 }
4013
4014
4015 static int nl80211_send_eapol_data(struct i802_bss *bss,
4016                                    const u8 *addr, const u8 *data,
4017                                    size_t data_len)
4018 {
4019         struct sockaddr_ll ll;
4020         int ret;
4021
4022         if (bss->drv->eapol_tx_sock < 0) {
4023                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4024                 return -1;
4025         }
4026
4027         os_memset(&ll, 0, sizeof(ll));
4028         ll.sll_family = AF_PACKET;
4029         ll.sll_ifindex = bss->ifindex;
4030         ll.sll_protocol = htons(ETH_P_PAE);
4031         ll.sll_halen = ETH_ALEN;
4032         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4033         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4034                      (struct sockaddr *) &ll, sizeof(ll));
4035         if (ret < 0)
4036                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4037                            strerror(errno));
4038
4039         return ret;
4040 }
4041
4042
4043 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4044
4045 static int wpa_driver_nl80211_hapd_send_eapol(
4046         void *priv, const u8 *addr, const u8 *data,
4047         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4048 {
4049         struct i802_bss *bss = priv;
4050         struct wpa_driver_nl80211_data *drv = bss->drv;
4051         struct ieee80211_hdr *hdr;
4052         size_t len;
4053         u8 *pos;
4054         int res;
4055         int qos = flags & WPA_STA_WMM;
4056
4057         if (drv->device_ap_sme || !drv->use_monitor)
4058                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4059
4060         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4061                 data_len;
4062         hdr = os_zalloc(len);
4063         if (hdr == NULL) {
4064                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4065                            (unsigned long) len);
4066                 return -1;
4067         }
4068
4069         hdr->frame_control =
4070                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4071         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4072         if (encrypt)
4073                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4074         if (qos) {
4075                 hdr->frame_control |=
4076                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4077         }
4078
4079         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4080         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4081         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4082         pos = (u8 *) (hdr + 1);
4083
4084         if (qos) {
4085                 /* Set highest priority in QoS header */
4086                 pos[0] = 7;
4087                 pos[1] = 0;
4088                 pos += 2;
4089         }
4090
4091         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4092         pos += sizeof(rfc1042_header);
4093         WPA_PUT_BE16(pos, ETH_P_PAE);
4094         pos += 2;
4095         memcpy(pos, data, data_len);
4096
4097         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4098                                             0, 0, 0, 0);
4099         if (res < 0) {
4100                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4101                            "failed: %d (%s)",
4102                            (unsigned long) len, errno, strerror(errno));
4103         }
4104         os_free(hdr);
4105
4106         return res;
4107 }
4108
4109
4110 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4111                                             int total_flags,
4112                                             int flags_or, int flags_and)
4113 {
4114         struct i802_bss *bss = priv;
4115         struct nl_msg *msg;
4116         struct nlattr *flags;
4117         struct nl80211_sta_flag_update upd;
4118
4119         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4120                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4121                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4122                    !!(total_flags & WPA_STA_AUTHORIZED));
4123
4124         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4125             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4126                 goto fail;
4127
4128         /*
4129          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4130          * can be removed eventually.
4131          */
4132         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4133         if (!flags ||
4134             ((total_flags & WPA_STA_AUTHORIZED) &&
4135              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4136             ((total_flags & WPA_STA_WMM) &&
4137              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4138             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4139              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4140             ((total_flags & WPA_STA_MFP) &&
4141              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4142             ((total_flags & WPA_STA_TDLS_PEER) &&
4143              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4144                 goto fail;
4145
4146         nla_nest_end(msg, flags);
4147
4148         os_memset(&upd, 0, sizeof(upd));
4149         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4150         upd.set = sta_flags_nl80211(flags_or);
4151         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4152                 goto fail;
4153
4154         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4155 fail:
4156         nlmsg_free(msg);
4157         return -ENOBUFS;
4158 }
4159
4160
4161 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4162                                  struct wpa_driver_associate_params *params)
4163 {
4164         enum nl80211_iftype nlmode, old_mode;
4165
4166         if (params->p2p) {
4167                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4168                            "group (GO)");
4169                 nlmode = NL80211_IFTYPE_P2P_GO;
4170         } else
4171                 nlmode = NL80211_IFTYPE_AP;
4172
4173         old_mode = drv->nlmode;
4174         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4175                 nl80211_remove_monitor_interface(drv);
4176                 return -1;
4177         }
4178
4179         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4180                 if (old_mode != nlmode)
4181                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4182                 nl80211_remove_monitor_interface(drv);
4183                 return -1;
4184         }
4185
4186         return 0;
4187 }
4188
4189
4190 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4191                               int reset_mode)
4192 {
4193         struct nl_msg *msg;
4194         int ret;
4195
4196         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4197         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4198         if (ret) {
4199                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4200                            "(%s)", ret, strerror(-ret));
4201         } else {
4202                 wpa_printf(MSG_DEBUG,
4203                            "nl80211: Leave IBSS request sent successfully");
4204         }
4205
4206         if (reset_mode &&
4207             wpa_driver_nl80211_set_mode(drv->first_bss,
4208                                         NL80211_IFTYPE_STATION)) {
4209                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4210                            "station mode");
4211         }
4212
4213         return ret;
4214 }
4215
4216
4217 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4218                                    struct wpa_driver_associate_params *params)
4219 {
4220         struct nl_msg *msg;
4221         int ret = -1;
4222         int count = 0;
4223
4224         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4225
4226         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4227                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4228                            "IBSS mode");
4229                 return -1;
4230         }
4231
4232 retry:
4233         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4234             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4235                 goto fail;
4236
4237         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4238                           params->ssid, params->ssid_len);
4239         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4240                 goto fail;
4241         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4242         drv->ssid_len = params->ssid_len;
4243
4244         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4245             nl80211_put_beacon_int(msg, params->beacon_int))
4246                 goto fail;
4247
4248         ret = nl80211_set_conn_keys(params, msg);
4249         if (ret)
4250                 goto fail;
4251
4252         if (params->bssid && params->fixed_bssid) {
4253                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4254                            MAC2STR(params->bssid));
4255                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4256                         goto fail;
4257         }
4258
4259         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4260             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4261             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4262             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4263                 wpa_printf(MSG_DEBUG, "  * control port");
4264                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4265                         goto fail;
4266         }
4267
4268         if (params->wpa_ie) {
4269                 wpa_hexdump(MSG_DEBUG,
4270                             "  * Extra IEs for Beacon/Probe Response frames",
4271                             params->wpa_ie, params->wpa_ie_len);
4272                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4273                             params->wpa_ie))
4274                         goto fail;
4275         }
4276
4277         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4278         msg = NULL;
4279         if (ret) {
4280                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4281                            ret, strerror(-ret));
4282                 count++;
4283                 if (ret == -EALREADY && count == 1) {
4284                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4285                                    "forced leave");
4286                         nl80211_leave_ibss(drv, 0);
4287                         nlmsg_free(msg);
4288                         goto retry;
4289                 }
4290         } else {
4291                 wpa_printf(MSG_DEBUG,
4292                            "nl80211: Join IBSS request sent successfully");
4293         }
4294
4295 fail:
4296         nlmsg_free(msg);
4297         return ret;
4298 }
4299
4300
4301 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4302                                   struct wpa_driver_associate_params *params,
4303                                   struct nl_msg *msg)
4304 {
4305         if (params->bssid) {
4306                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4307                            MAC2STR(params->bssid));
4308                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4309                         return -1;
4310         }
4311
4312         if (params->bssid_hint) {
4313                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4314                            MAC2STR(params->bssid_hint));
4315                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4316                             params->bssid_hint))
4317                         return -1;
4318         }
4319
4320         if (params->freq.freq) {
4321                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4322                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4323                                 params->freq.freq))
4324                         return -1;
4325                 drv->assoc_freq = params->freq.freq;
4326         } else
4327                 drv->assoc_freq = 0;
4328
4329         if (params->freq_hint) {
4330                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4331                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4332                                 params->freq_hint))
4333                         return -1;
4334         }
4335
4336         if (params->bg_scan_period >= 0) {
4337                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4338                            params->bg_scan_period);
4339                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4340                                 params->bg_scan_period))
4341                         return -1;
4342         }
4343
4344         if (params->ssid) {
4345                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4346                                   params->ssid, params->ssid_len);
4347                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4348                             params->ssid))
4349                         return -1;
4350                 if (params->ssid_len > sizeof(drv->ssid))
4351                         return -1;
4352                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4353                 drv->ssid_len = params->ssid_len;
4354         }
4355
4356         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4357         if (params->wpa_ie &&
4358             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4359                 return -1;
4360
4361         if (params->wpa_proto) {
4362                 enum nl80211_wpa_versions ver = 0;
4363
4364                 if (params->wpa_proto & WPA_PROTO_WPA)
4365                         ver |= NL80211_WPA_VERSION_1;
4366                 if (params->wpa_proto & WPA_PROTO_RSN)
4367                         ver |= NL80211_WPA_VERSION_2;
4368
4369                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4370                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4371                         return -1;
4372         }
4373
4374         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4375                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4376                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4377                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4378                                 cipher))
4379                         return -1;
4380         }
4381
4382         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4383             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4384                 /*
4385                  * This is likely to work even though many drivers do not
4386                  * advertise support for operations without GTK.
4387                  */
4388                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4389         } else if (params->group_suite != WPA_CIPHER_NONE) {
4390                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4391                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4392                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4393                         return -1;
4394         }
4395
4396         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4397             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4398             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4399             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4400             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4401             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4402             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4403             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4404             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
4405                 int mgmt = WLAN_AKM_SUITE_PSK;
4406
4407                 switch (params->key_mgmt_suite) {
4408                 case WPA_KEY_MGMT_CCKM:
4409                         mgmt = WLAN_AKM_SUITE_CCKM;
4410                         break;
4411                 case WPA_KEY_MGMT_IEEE8021X:
4412                         mgmt = WLAN_AKM_SUITE_8021X;
4413                         break;
4414                 case WPA_KEY_MGMT_FT_IEEE8021X:
4415                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4416                         break;
4417                 case WPA_KEY_MGMT_FT_PSK:
4418                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4419                         break;
4420                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4421                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4422                         break;
4423                 case WPA_KEY_MGMT_PSK_SHA256:
4424                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4425                         break;
4426                 case WPA_KEY_MGMT_OSEN:
4427                         mgmt = WLAN_AKM_SUITE_OSEN;
4428                         break;
4429                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4430                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4431                         break;
4432                 case WPA_KEY_MGMT_PSK:
4433                 default:
4434                         mgmt = WLAN_AKM_SUITE_PSK;
4435                         break;
4436                 }
4437                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4438                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4439                         return -1;
4440         }
4441
4442         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4443                 return -1;
4444
4445         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4446             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4447                 return -1;
4448
4449         if (params->rrm_used) {
4450                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4451                 if (!(drv_rrm_flags &
4452                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4453                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4454                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4455                         return -1;
4456         }
4457
4458         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4459                 return -1;
4460
4461         if (params->htcaps && params->htcaps_mask) {
4462                 int sz = sizeof(struct ieee80211_ht_capabilities);
4463                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4464                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4465                             params->htcaps_mask, sz);
4466                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4467                             params->htcaps) ||
4468                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4469                             params->htcaps_mask))
4470                         return -1;
4471         }
4472
4473 #ifdef CONFIG_VHT_OVERRIDES
4474         if (params->disable_vht) {
4475                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4476                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4477                         return -1;
4478         }
4479
4480         if (params->vhtcaps && params->vhtcaps_mask) {
4481                 int sz = sizeof(struct ieee80211_vht_capabilities);
4482                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4483                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4484                             params->vhtcaps_mask, sz);
4485                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4486                             params->vhtcaps) ||
4487                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4488                             params->vhtcaps_mask))
4489                         return -1;
4490         }
4491 #endif /* CONFIG_VHT_OVERRIDES */
4492
4493         if (params->p2p)
4494                 wpa_printf(MSG_DEBUG, "  * P2P group");
4495
4496         return 0;
4497 }
4498
4499
4500 static int wpa_driver_nl80211_try_connect(
4501         struct wpa_driver_nl80211_data *drv,
4502         struct wpa_driver_associate_params *params)
4503 {
4504         struct nl_msg *msg;
4505         enum nl80211_auth_type type;
4506         int ret;
4507         int algs;
4508
4509         if (params->req_key_mgmt_offload && params->psk &&
4510             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4511              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4512              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4513                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4514                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4515                 if (ret)
4516                         return ret;
4517         }
4518
4519         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4520         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4521         if (!msg)
4522                 return -1;
4523
4524         ret = nl80211_connect_common(drv, params, msg);
4525         if (ret)
4526                 goto fail;
4527
4528         algs = 0;
4529         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4530                 algs++;
4531         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4532                 algs++;
4533         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4534                 algs++;
4535         if (algs > 1) {
4536                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4537                            "selection");
4538                 goto skip_auth_type;
4539         }
4540
4541         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4542                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4543         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4544                 type = NL80211_AUTHTYPE_SHARED_KEY;
4545         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4546                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4547         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4548                 type = NL80211_AUTHTYPE_FT;
4549         else
4550                 goto fail;
4551
4552         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4553         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4554                 goto fail;
4555
4556 skip_auth_type:
4557         ret = nl80211_set_conn_keys(params, msg);
4558         if (ret)
4559                 goto fail;
4560
4561         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4562         msg = NULL;
4563         if (ret) {
4564                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4565                            "(%s)", ret, strerror(-ret));
4566         } else {
4567                 wpa_printf(MSG_DEBUG,
4568                            "nl80211: Connect request send successfully");
4569         }
4570
4571 fail:
4572         nlmsg_free(msg);
4573         return ret;
4574
4575 }
4576
4577
4578 static int wpa_driver_nl80211_connect(
4579         struct wpa_driver_nl80211_data *drv,
4580         struct wpa_driver_associate_params *params)
4581 {
4582         int ret;
4583
4584         /* Store the connection attempted bssid for future use */
4585         if (params->bssid)
4586                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4587         else
4588                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4589
4590         ret = wpa_driver_nl80211_try_connect(drv, params);
4591         if (ret == -EALREADY) {
4592                 /*
4593                  * cfg80211 does not currently accept new connections if
4594                  * we are already connected. As a workaround, force
4595                  * disconnection and try again.
4596                  */
4597                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4598                            "disconnecting before reassociation "
4599                            "attempt");
4600                 if (wpa_driver_nl80211_disconnect(
4601                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4602                         return -1;
4603                 ret = wpa_driver_nl80211_try_connect(drv, params);
4604         }
4605         return ret;
4606 }
4607
4608
4609 static int wpa_driver_nl80211_associate(
4610         void *priv, struct wpa_driver_associate_params *params)
4611 {
4612         struct i802_bss *bss = priv;
4613         struct wpa_driver_nl80211_data *drv = bss->drv;
4614         int ret = -1;
4615         struct nl_msg *msg;
4616
4617         nl80211_unmask_11b_rates(bss);
4618
4619         if (params->mode == IEEE80211_MODE_AP)
4620                 return wpa_driver_nl80211_ap(drv, params);
4621
4622         if (params->mode == IEEE80211_MODE_IBSS)
4623                 return wpa_driver_nl80211_ibss(drv, params);
4624
4625         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4626                 enum nl80211_iftype nlmode = params->p2p ?
4627                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4628
4629                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4630                         return -1;
4631                 return wpa_driver_nl80211_connect(drv, params);
4632         }
4633
4634         nl80211_mark_disconnected(drv);
4635
4636         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4637                    drv->ifindex);
4638         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4639         if (!msg)
4640                 return -1;
4641
4642         ret = nl80211_connect_common(drv, params, msg);
4643         if (ret)
4644                 goto fail;
4645
4646         if (params->prev_bssid) {
4647                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4648                            MAC2STR(params->prev_bssid));
4649                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4650                             params->prev_bssid))
4651                         goto fail;
4652         }
4653
4654         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4655         msg = NULL;
4656         if (ret) {
4657                 wpa_dbg(drv->ctx, MSG_DEBUG,
4658                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4659                         ret, strerror(-ret));
4660                 nl80211_dump_scan(drv);
4661         } else {
4662                 wpa_printf(MSG_DEBUG,
4663                            "nl80211: Association request send successfully");
4664         }
4665
4666 fail:
4667         nlmsg_free(msg);
4668         return ret;
4669 }
4670
4671
4672 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4673                             int ifindex, enum nl80211_iftype mode)
4674 {
4675         struct nl_msg *msg;
4676         int ret = -ENOBUFS;
4677
4678         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4679                    ifindex, mode, nl80211_iftype_str(mode));
4680
4681         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
4682         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
4683                 goto fail;
4684
4685         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4686         msg = NULL;
4687         if (!ret)
4688                 return 0;
4689 fail:
4690         nlmsg_free(msg);
4691         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4692                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4693         return ret;
4694 }
4695
4696
4697 static int wpa_driver_nl80211_set_mode_impl(
4698                 struct i802_bss *bss,
4699                 enum nl80211_iftype nlmode,
4700                 struct hostapd_freq_params *desired_freq_params)
4701 {
4702         struct wpa_driver_nl80211_data *drv = bss->drv;
4703         int ret = -1;
4704         int i;
4705         int was_ap = is_ap_interface(drv->nlmode);
4706         int res;
4707         int mode_switch_res;
4708
4709         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4710         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
4711                 mode_switch_res = 0;
4712
4713         if (mode_switch_res == 0) {
4714                 drv->nlmode = nlmode;
4715                 ret = 0;
4716                 goto done;
4717         }
4718
4719         if (mode_switch_res == -ENODEV)
4720                 return -1;
4721
4722         if (nlmode == drv->nlmode) {
4723                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4724                            "requested mode - ignore error");
4725                 ret = 0;
4726                 goto done; /* Already in the requested mode */
4727         }
4728
4729         /* mac80211 doesn't allow mode changes while the device is up, so
4730          * take the device down, try to set the mode again, and bring the
4731          * device back up.
4732          */
4733         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4734                    "interface down");
4735         for (i = 0; i < 10; i++) {
4736                 res = i802_set_iface_flags(bss, 0);
4737                 if (res == -EACCES || res == -ENODEV)
4738                         break;
4739                 if (res != 0) {
4740                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4741                                    "interface down");
4742                         os_sleep(0, 100000);
4743                         continue;
4744                 }
4745
4746                 /*
4747                  * Setting the mode will fail for some drivers if the phy is
4748                  * on a frequency that the mode is disallowed in.
4749                  */
4750                 if (desired_freq_params) {
4751                         res = nl80211_set_channel(bss, desired_freq_params, 0);
4752                         if (res) {
4753                                 wpa_printf(MSG_DEBUG,
4754                                            "nl80211: Failed to set frequency on interface");
4755                         }
4756                 }
4757
4758                 /* Try to set the mode again while the interface is down */
4759                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4760                 if (mode_switch_res == -EBUSY) {
4761                         wpa_printf(MSG_DEBUG,
4762                                    "nl80211: Delaying mode set while interface going down");
4763                         os_sleep(0, 100000);
4764                         continue;
4765                 }
4766                 ret = mode_switch_res;
4767                 break;
4768         }
4769
4770         if (!ret) {
4771                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4772                            "interface is down");
4773                 drv->nlmode = nlmode;
4774                 drv->ignore_if_down_event = 1;
4775         }
4776
4777         /* Bring the interface back up */
4778         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
4779         if (res != 0) {
4780                 wpa_printf(MSG_DEBUG,
4781                            "nl80211: Failed to set interface up after switching mode");
4782                 ret = -1;
4783         }
4784
4785 done:
4786         if (ret) {
4787                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4788                            "from %d failed", nlmode, drv->nlmode);
4789                 return ret;
4790         }
4791
4792         if (is_p2p_net_interface(nlmode)) {
4793                 wpa_printf(MSG_DEBUG,
4794                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
4795                            bss->ifname);
4796                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
4797         } else if (drv->disabled_11b_rates) {
4798                 wpa_printf(MSG_DEBUG,
4799                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
4800                            bss->ifname);
4801                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4802         }
4803
4804         if (is_ap_interface(nlmode)) {
4805                 nl80211_mgmt_unsubscribe(bss, "start AP");
4806                 /* Setup additional AP mode functionality if needed */
4807                 if (nl80211_setup_ap(bss))
4808                         return -1;
4809         } else if (was_ap) {
4810                 /* Remove additional AP mode functionality */
4811                 nl80211_teardown_ap(bss);
4812         } else {
4813                 nl80211_mgmt_unsubscribe(bss, "mode change");
4814         }
4815
4816         if (is_mesh_interface(nlmode) &&
4817             nl80211_mgmt_subscribe_mesh(bss))
4818                 return -1;
4819
4820         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
4821             !is_mesh_interface(nlmode) &&
4822             nl80211_mgmt_subscribe_non_ap(bss) < 0)
4823                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
4824                            "frame processing - ignore for now");
4825
4826         return 0;
4827 }
4828
4829
4830 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
4831                                 enum nl80211_iftype nlmode)
4832 {
4833         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
4834 }
4835
4836
4837 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
4838                                             struct hostapd_freq_params *freq)
4839 {
4840         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
4841                                                 freq);
4842 }
4843
4844
4845 static int wpa_driver_nl80211_get_capa(void *priv,
4846                                        struct wpa_driver_capa *capa)
4847 {
4848         struct i802_bss *bss = priv;
4849         struct wpa_driver_nl80211_data *drv = bss->drv;
4850
4851         if (!drv->has_capability)
4852                 return -1;
4853         os_memcpy(capa, &drv->capa, sizeof(*capa));
4854         if (drv->extended_capa && drv->extended_capa_mask) {
4855                 capa->extended_capa = drv->extended_capa;
4856                 capa->extended_capa_mask = drv->extended_capa_mask;
4857                 capa->extended_capa_len = drv->extended_capa_len;
4858         }
4859
4860         return 0;
4861 }
4862
4863
4864 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4865 {
4866         struct i802_bss *bss = priv;
4867         struct wpa_driver_nl80211_data *drv = bss->drv;
4868
4869         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
4870                    bss->ifname, drv->operstate, state,
4871                    state ? "UP" : "DORMANT");
4872         drv->operstate = state;
4873         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
4874                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4875 }
4876
4877
4878 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4879 {
4880         struct i802_bss *bss = priv;
4881         struct wpa_driver_nl80211_data *drv = bss->drv;
4882         struct nl_msg *msg;
4883         struct nl80211_sta_flag_update upd;
4884         int ret;
4885
4886         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
4887                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
4888                 return 0;
4889         }
4890
4891         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
4892                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
4893
4894         os_memset(&upd, 0, sizeof(upd));
4895         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4896         if (authorized)
4897                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4898
4899         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4900             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
4901             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
4902                 nlmsg_free(msg);
4903                 return -ENOBUFS;
4904         }
4905
4906         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4907         if (!ret)
4908                 return 0;
4909         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
4910                    ret, strerror(-ret));
4911         return ret;
4912 }
4913
4914
4915 /* Set kernel driver on given frequency (MHz) */
4916 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4917 {
4918         struct i802_bss *bss = priv;
4919         return nl80211_set_channel(bss, freq, 0);
4920 }
4921
4922
4923 static inline int min_int(int a, int b)
4924 {
4925         if (a < b)
4926                 return a;
4927         return b;
4928 }
4929
4930
4931 static int get_key_handler(struct nl_msg *msg, void *arg)
4932 {
4933         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4934         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4935
4936         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4937                   genlmsg_attrlen(gnlh, 0), NULL);
4938
4939         /*
4940          * TODO: validate the key index and mac address!
4941          * Otherwise, there's a race condition as soon as
4942          * the kernel starts sending key notifications.
4943          */
4944
4945         if (tb[NL80211_ATTR_KEY_SEQ])
4946                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4947                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4948         return NL_SKIP;
4949 }
4950
4951
4952 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4953                            int idx, u8 *seq)
4954 {
4955         struct i802_bss *bss = priv;
4956         struct wpa_driver_nl80211_data *drv = bss->drv;
4957         struct nl_msg *msg;
4958
4959         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
4960                                   NL80211_CMD_GET_KEY);
4961         if (!msg ||
4962             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
4963             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
4964                 nlmsg_free(msg);
4965                 return -ENOBUFS;
4966         }
4967
4968         memset(seq, 0, 6);
4969
4970         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4971 }
4972
4973
4974 static int i802_set_rts(void *priv, int rts)
4975 {
4976         struct i802_bss *bss = priv;
4977         struct wpa_driver_nl80211_data *drv = bss->drv;
4978         struct nl_msg *msg;
4979         int ret;
4980         u32 val;
4981
4982         if (rts >= 2347)
4983                 val = (u32) -1;
4984         else
4985                 val = rts;
4986
4987         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
4988             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
4989                 nlmsg_free(msg);
4990                 return -ENOBUFS;
4991         }
4992
4993         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4994         if (!ret)
4995                 return 0;
4996         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4997                    "%d (%s)", rts, ret, strerror(-ret));
4998         return ret;
4999 }
5000
5001
5002 static int i802_set_frag(void *priv, int frag)
5003 {
5004         struct i802_bss *bss = priv;
5005         struct wpa_driver_nl80211_data *drv = bss->drv;
5006         struct nl_msg *msg;
5007         int ret;
5008         u32 val;
5009
5010         if (frag >= 2346)
5011                 val = (u32) -1;
5012         else
5013                 val = frag;
5014
5015         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5016             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5017                 nlmsg_free(msg);
5018                 return -ENOBUFS;
5019         }
5020
5021         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5022         if (!ret)
5023                 return 0;
5024         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5025                    "%d: %d (%s)", frag, ret, strerror(-ret));
5026         return ret;
5027 }
5028
5029
5030 static int i802_flush(void *priv)
5031 {
5032         struct i802_bss *bss = priv;
5033         struct nl_msg *msg;
5034         int res;
5035
5036         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5037                    bss->ifname);
5038
5039         /*
5040          * XXX: FIX! this needs to flush all VLANs too
5041          */
5042         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5043         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5044         if (res) {
5045                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5046                            "(%s)", res, strerror(-res));
5047         }
5048         return res;
5049 }
5050
5051
5052 static int get_sta_handler(struct nl_msg *msg, void *arg)
5053 {
5054         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5055         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5056         struct hostap_sta_driver_data *data = arg;
5057         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5058         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5059                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5060                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5061                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5062                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5063                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5064                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5065         };
5066
5067         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5068                   genlmsg_attrlen(gnlh, 0), NULL);
5069
5070         /*
5071          * TODO: validate the interface and mac address!
5072          * Otherwise, there's a race condition as soon as
5073          * the kernel starts sending station notifications.
5074          */
5075
5076         if (!tb[NL80211_ATTR_STA_INFO]) {
5077                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5078                 return NL_SKIP;
5079         }
5080         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5081                              tb[NL80211_ATTR_STA_INFO],
5082                              stats_policy)) {
5083                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5084                 return NL_SKIP;
5085         }
5086
5087         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5088                 data->inactive_msec =
5089                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5090         if (stats[NL80211_STA_INFO_RX_BYTES])
5091                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5092         if (stats[NL80211_STA_INFO_TX_BYTES])
5093                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5094         if (stats[NL80211_STA_INFO_RX_PACKETS])
5095                 data->rx_packets =
5096                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5097         if (stats[NL80211_STA_INFO_TX_PACKETS])
5098                 data->tx_packets =
5099                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5100         if (stats[NL80211_STA_INFO_TX_FAILED])
5101                 data->tx_retry_failed =
5102                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5103
5104         return NL_SKIP;
5105 }
5106
5107 static int i802_read_sta_data(struct i802_bss *bss,
5108                               struct hostap_sta_driver_data *data,
5109                               const u8 *addr)
5110 {
5111         struct nl_msg *msg;
5112
5113         os_memset(data, 0, sizeof(*data));
5114
5115         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5116             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5117                 nlmsg_free(msg);
5118                 return -ENOBUFS;
5119         }
5120
5121         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5122 }
5123
5124
5125 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5126                                     int cw_min, int cw_max, int burst_time)
5127 {
5128         struct i802_bss *bss = priv;
5129         struct wpa_driver_nl80211_data *drv = bss->drv;
5130         struct nl_msg *msg;
5131         struct nlattr *txq, *params;
5132
5133         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5134         if (!msg)
5135                 return -1;
5136
5137         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5138         if (!txq)
5139                 goto fail;
5140
5141         /* We are only sending parameters for a single TXQ at a time */
5142         params = nla_nest_start(msg, 1);
5143         if (!params)
5144                 goto fail;
5145
5146         switch (queue) {
5147         case 0:
5148                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5149                         goto fail;
5150                 break;
5151         case 1:
5152                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5153                         goto fail;
5154                 break;
5155         case 2:
5156                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5157                         goto fail;
5158                 break;
5159         case 3:
5160                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5161                         goto fail;
5162                 break;
5163         }
5164         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5165          * 32 usec, so need to convert the value here. */
5166         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5167                         (burst_time * 100 + 16) / 32) ||
5168             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5169             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5170             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5171                 goto fail;
5172
5173         nla_nest_end(msg, params);
5174
5175         nla_nest_end(msg, txq);
5176
5177         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5178                 return 0;
5179         msg = NULL;
5180 fail:
5181         nlmsg_free(msg);
5182         return -1;
5183 }
5184
5185
5186 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5187                              const char *ifname, int vlan_id)
5188 {
5189         struct wpa_driver_nl80211_data *drv = bss->drv;
5190         struct nl_msg *msg;
5191         int ret;
5192
5193         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5194                    ", ifname=%s[%d], vlan_id=%d)",
5195                    bss->ifname, if_nametoindex(bss->ifname),
5196                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5197         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5198             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5199             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5200                 nlmsg_free(msg);
5201                 return -ENOBUFS;
5202         }
5203
5204         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5205         if (ret < 0) {
5206                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5207                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5208                            MAC2STR(addr), ifname, vlan_id, ret,
5209                            strerror(-ret));
5210         }
5211         return ret;
5212 }
5213
5214
5215 static int i802_get_inact_sec(void *priv, const u8 *addr)
5216 {
5217         struct hostap_sta_driver_data data;
5218         int ret;
5219
5220         data.inactive_msec = (unsigned long) -1;
5221         ret = i802_read_sta_data(priv, &data, addr);
5222         if (ret == -ENOENT)
5223                 return -ENOENT;
5224         if (ret || data.inactive_msec == (unsigned long) -1)
5225                 return -1;
5226         return data.inactive_msec / 1000;
5227 }
5228
5229
5230 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5231 {
5232 #if 0
5233         /* TODO */
5234 #endif
5235         return 0;
5236 }
5237
5238
5239 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5240                            int reason)
5241 {
5242         struct i802_bss *bss = priv;
5243         struct wpa_driver_nl80211_data *drv = bss->drv;
5244         struct ieee80211_mgmt mgmt;
5245
5246         if (is_mesh_interface(drv->nlmode))
5247                 return -1;
5248
5249         if (drv->device_ap_sme)
5250                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5251
5252         memset(&mgmt, 0, sizeof(mgmt));
5253         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5254                                           WLAN_FC_STYPE_DEAUTH);
5255         memcpy(mgmt.da, addr, ETH_ALEN);
5256         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5257         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5258         mgmt.u.deauth.reason_code = host_to_le16(reason);
5259         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5260                                             IEEE80211_HDRLEN +
5261                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5262                                             0);
5263 }
5264
5265
5266 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5267                              int reason)
5268 {
5269         struct i802_bss *bss = priv;
5270         struct wpa_driver_nl80211_data *drv = bss->drv;
5271         struct ieee80211_mgmt mgmt;
5272
5273         if (is_mesh_interface(drv->nlmode))
5274                 return -1;
5275
5276         if (drv->device_ap_sme)
5277                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5278
5279         memset(&mgmt, 0, sizeof(mgmt));
5280         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5281                                           WLAN_FC_STYPE_DISASSOC);
5282         memcpy(mgmt.da, addr, ETH_ALEN);
5283         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5284         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5285         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5286         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5287                                             IEEE80211_HDRLEN +
5288                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5289                                             0);
5290 }
5291
5292
5293 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5294 {
5295         char buf[200], *pos, *end;
5296         int i, res;
5297
5298         pos = buf;
5299         end = pos + sizeof(buf);
5300
5301         for (i = 0; i < drv->num_if_indices; i++) {
5302                 if (!drv->if_indices[i])
5303                         continue;
5304                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5305                 if (os_snprintf_error(end - pos, res))
5306                         break;
5307                 pos += res;
5308         }
5309         *pos = '\0';
5310
5311         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5312                    drv->num_if_indices, buf);
5313 }
5314
5315
5316 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5317 {
5318         int i;
5319         int *old;
5320
5321         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5322                    ifidx);
5323         if (have_ifidx(drv, ifidx)) {
5324                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5325                            ifidx);
5326                 return;
5327         }
5328         for (i = 0; i < drv->num_if_indices; i++) {
5329                 if (drv->if_indices[i] == 0) {
5330                         drv->if_indices[i] = ifidx;
5331                         dump_ifidx(drv);
5332                         return;
5333                 }
5334         }
5335
5336         if (drv->if_indices != drv->default_if_indices)
5337                 old = drv->if_indices;
5338         else
5339                 old = NULL;
5340
5341         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5342                                            sizeof(int));
5343         if (!drv->if_indices) {
5344                 if (!old)
5345                         drv->if_indices = drv->default_if_indices;
5346                 else
5347                         drv->if_indices = old;
5348                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5349                            "interfaces");
5350                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5351                 return;
5352         } else if (!old)
5353                 os_memcpy(drv->if_indices, drv->default_if_indices,
5354                           sizeof(drv->default_if_indices));
5355         drv->if_indices[drv->num_if_indices] = ifidx;
5356         drv->num_if_indices++;
5357         dump_ifidx(drv);
5358 }
5359
5360
5361 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5362 {
5363         int i;
5364
5365         for (i = 0; i < drv->num_if_indices; i++) {
5366                 if (drv->if_indices[i] == ifidx) {
5367                         drv->if_indices[i] = 0;
5368                         break;
5369                 }
5370         }
5371         dump_ifidx(drv);
5372 }
5373
5374
5375 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5376 {
5377         int i;
5378
5379         for (i = 0; i < drv->num_if_indices; i++)
5380                 if (drv->if_indices[i] == ifidx)
5381                         return 1;
5382
5383         return 0;
5384 }
5385
5386
5387 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5388                             const char *bridge_ifname, char *ifname_wds)
5389 {
5390         struct i802_bss *bss = priv;
5391         struct wpa_driver_nl80211_data *drv = bss->drv;
5392         char name[IFNAMSIZ + 1];
5393
5394         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5395         if (ifname_wds)
5396                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5397
5398         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5399                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5400         if (val) {
5401                 if (!if_nametoindex(name)) {
5402                         if (nl80211_create_iface(drv, name,
5403                                                  NL80211_IFTYPE_AP_VLAN,
5404                                                  bss->addr, 1, NULL, NULL, 0) <
5405                             0)
5406                                 return -1;
5407                         if (bridge_ifname &&
5408                             linux_br_add_if(drv->global->ioctl_sock,
5409                                             bridge_ifname, name) < 0)
5410                                 return -1;
5411                 }
5412                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5413                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5414                                    "interface %s up", name);
5415                 }
5416                 return i802_set_sta_vlan(priv, addr, name, 0);
5417         } else {
5418                 if (bridge_ifname)
5419                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5420                                         name);
5421
5422                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5423                 nl80211_remove_iface(drv, if_nametoindex(name));
5424                 return 0;
5425         }
5426 }
5427
5428
5429 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5430 {
5431         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5432         struct sockaddr_ll lladdr;
5433         unsigned char buf[3000];
5434         int len;
5435         socklen_t fromlen = sizeof(lladdr);
5436
5437         len = recvfrom(sock, buf, sizeof(buf), 0,
5438                        (struct sockaddr *)&lladdr, &fromlen);
5439         if (len < 0) {
5440                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5441                            strerror(errno));
5442                 return;
5443         }
5444
5445         if (have_ifidx(drv, lladdr.sll_ifindex))
5446                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5447 }
5448
5449
5450 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5451                              struct i802_bss *bss,
5452                              const char *brname, const char *ifname)
5453 {
5454         int br_ifindex;
5455         char in_br[IFNAMSIZ];
5456
5457         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5458         br_ifindex = if_nametoindex(brname);
5459         if (br_ifindex == 0) {
5460                 /*
5461                  * Bridge was configured, but the bridge device does
5462                  * not exist. Try to add it now.
5463                  */
5464                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5465                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5466                                    "bridge interface %s: %s",
5467                                    brname, strerror(errno));
5468                         return -1;
5469                 }
5470                 bss->added_bridge = 1;
5471                 br_ifindex = if_nametoindex(brname);
5472                 add_ifidx(drv, br_ifindex);
5473         }
5474         bss->br_ifindex = br_ifindex;
5475
5476         if (linux_br_get(in_br, ifname) == 0) {
5477                 if (os_strcmp(in_br, brname) == 0)
5478                         return 0; /* already in the bridge */
5479
5480                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5481                            "bridge %s", ifname, in_br);
5482                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5483                     0) {
5484                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5485                                    "remove interface %s from bridge "
5486                                    "%s: %s",
5487                                    ifname, brname, strerror(errno));
5488                         return -1;
5489                 }
5490         }
5491
5492         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5493                    ifname, brname);
5494         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5495                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5496                            "into bridge %s: %s",
5497                            ifname, brname, strerror(errno));
5498                 return -1;
5499         }
5500         bss->added_if_into_bridge = 1;
5501
5502         return 0;
5503 }
5504
5505
5506 static void *i802_init(struct hostapd_data *hapd,
5507                        struct wpa_init_params *params)
5508 {
5509         struct wpa_driver_nl80211_data *drv;
5510         struct i802_bss *bss;
5511         size_t i;
5512         char brname[IFNAMSIZ];
5513         int ifindex, br_ifindex;
5514         int br_added = 0;
5515
5516         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5517                                           params->global_priv, 1,
5518                                           params->bssid, params->driver_params);
5519         if (bss == NULL)
5520                 return NULL;
5521
5522         drv = bss->drv;
5523
5524         if (linux_br_get(brname, params->ifname) == 0) {
5525                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5526                            params->ifname, brname);
5527                 br_ifindex = if_nametoindex(brname);
5528                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
5529         } else {
5530                 brname[0] = '\0';
5531                 br_ifindex = 0;
5532         }
5533         bss->br_ifindex = br_ifindex;
5534
5535         for (i = 0; i < params->num_bridge; i++) {
5536                 if (params->bridge[i]) {
5537                         ifindex = if_nametoindex(params->bridge[i]);
5538                         if (ifindex)
5539                                 add_ifidx(drv, ifindex);
5540                         if (ifindex == br_ifindex)
5541                                 br_added = 1;
5542                 }
5543         }
5544
5545         /* start listening for EAPOL on the default AP interface */
5546         add_ifidx(drv, drv->ifindex);
5547
5548         if (params->num_bridge && params->bridge[0]) {
5549                 if (i802_check_bridge(drv, bss, params->bridge[0],
5550                                       params->ifname) < 0)
5551                         goto failed;
5552                 if (os_strcmp(params->bridge[0], brname) != 0)
5553                         br_added = 1;
5554         }
5555
5556         if (!br_added && br_ifindex &&
5557             (params->num_bridge == 0 || !params->bridge[0]))
5558                 add_ifidx(drv, br_ifindex);
5559
5560 #ifdef CONFIG_LIBNL3_ROUTE
5561         if (bss->added_if_into_bridge) {
5562                 drv->rtnl_sk = nl_socket_alloc();
5563                 if (drv->rtnl_sk == NULL) {
5564                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5565                         goto failed;
5566                 }
5567
5568                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5569                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5570                                    strerror(errno));
5571                         goto failed;
5572                 }
5573         }
5574 #endif /* CONFIG_LIBNL3_ROUTE */
5575
5576         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5577         if (drv->eapol_sock < 0) {
5578                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5579                            strerror(errno));
5580                 goto failed;
5581         }
5582
5583         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5584         {
5585                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5586                 goto failed;
5587         }
5588
5589         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5590                                params->own_addr))
5591                 goto failed;
5592         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5593
5594         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5595
5596         return bss;
5597
5598 failed:
5599         wpa_driver_nl80211_deinit(bss);
5600         return NULL;
5601 }
5602
5603
5604 static void i802_deinit(void *priv)
5605 {
5606         struct i802_bss *bss = priv;
5607         wpa_driver_nl80211_deinit(bss);
5608 }
5609
5610
5611 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5612         enum wpa_driver_if_type type)
5613 {
5614         switch (type) {
5615         case WPA_IF_STATION:
5616                 return NL80211_IFTYPE_STATION;
5617         case WPA_IF_P2P_CLIENT:
5618         case WPA_IF_P2P_GROUP:
5619                 return NL80211_IFTYPE_P2P_CLIENT;
5620         case WPA_IF_AP_VLAN:
5621                 return NL80211_IFTYPE_AP_VLAN;
5622         case WPA_IF_AP_BSS:
5623                 return NL80211_IFTYPE_AP;
5624         case WPA_IF_P2P_GO:
5625                 return NL80211_IFTYPE_P2P_GO;
5626         case WPA_IF_P2P_DEVICE:
5627                 return NL80211_IFTYPE_P2P_DEVICE;
5628         case WPA_IF_MESH:
5629                 return NL80211_IFTYPE_MESH_POINT;
5630         }
5631         return -1;
5632 }
5633
5634
5635 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5636
5637 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5638 {
5639         struct wpa_driver_nl80211_data *drv;
5640         dl_list_for_each(drv, &global->interfaces,
5641                          struct wpa_driver_nl80211_data, list) {
5642                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5643                         return 1;
5644         }
5645         return 0;
5646 }
5647
5648
5649 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5650 {
5651         unsigned int idx;
5652
5653         if (!drv->global)
5654                 return -1;
5655
5656         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5657         for (idx = 0; idx < 64; idx++) {
5658                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5659                 new_addr[0] ^= idx << 2;
5660                 if (!nl80211_addr_in_use(drv->global, new_addr))
5661                         break;
5662         }
5663         if (idx == 64)
5664                 return -1;
5665
5666         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5667                    MACSTR, MAC2STR(new_addr));
5668
5669         return 0;
5670 }
5671
5672 #endif /* CONFIG_P2P || CONFIG_MESH */
5673
5674
5675 struct wdev_info {
5676         u64 wdev_id;
5677         int wdev_id_set;
5678         u8 macaddr[ETH_ALEN];
5679 };
5680
5681 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
5682 {
5683         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5684         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5685         struct wdev_info *wi = arg;
5686
5687         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5688                   genlmsg_attrlen(gnlh, 0), NULL);
5689         if (tb[NL80211_ATTR_WDEV]) {
5690                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
5691                 wi->wdev_id_set = 1;
5692         }
5693
5694         if (tb[NL80211_ATTR_MAC])
5695                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
5696                           ETH_ALEN);
5697
5698         return NL_SKIP;
5699 }
5700
5701
5702 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5703                                      const char *ifname, const u8 *addr,
5704                                      void *bss_ctx, void **drv_priv,
5705                                      char *force_ifname, u8 *if_addr,
5706                                      const char *bridge, int use_existing)
5707 {
5708         enum nl80211_iftype nlmode;
5709         struct i802_bss *bss = priv;
5710         struct wpa_driver_nl80211_data *drv = bss->drv;
5711         int ifidx;
5712         int added = 1;
5713
5714         if (addr)
5715                 os_memcpy(if_addr, addr, ETH_ALEN);
5716         nlmode = wpa_driver_nl80211_if_type(type);
5717         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
5718                 struct wdev_info p2pdev_info;
5719
5720                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
5721                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5722                                              0, nl80211_wdev_handler,
5723                                              &p2pdev_info, use_existing);
5724                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
5725                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
5726                                    ifname);
5727                         return -1;
5728                 }
5729
5730                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
5731                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
5732                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
5733                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
5734                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
5735                            ifname,
5736                            (long long unsigned int) p2pdev_info.wdev_id);
5737         } else {
5738                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5739                                              0, NULL, NULL, use_existing);
5740                 if (use_existing && ifidx == -ENFILE) {
5741                         added = 0;
5742                         ifidx = if_nametoindex(ifname);
5743                 } else if (ifidx < 0) {
5744                         return -1;
5745                 }
5746         }
5747
5748         if (!addr) {
5749                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
5750                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
5751                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
5752                                             bss->ifname, if_addr) < 0) {
5753                         if (added)
5754                                 nl80211_remove_iface(drv, ifidx);
5755                         return -1;
5756                 }
5757         }
5758
5759 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5760         if (!addr &&
5761             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5762              type == WPA_IF_P2P_GO || type == WPA_IF_MESH)) {
5763                 /* Enforce unique P2P Interface Address */
5764                 u8 new_addr[ETH_ALEN];
5765
5766                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
5767                                        new_addr) < 0) {
5768                         if (added)
5769                                 nl80211_remove_iface(drv, ifidx);
5770                         return -1;
5771                 }
5772                 if (nl80211_addr_in_use(drv->global, new_addr)) {
5773                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5774                                    "for %s interface", type == WPA_IF_MESH ?
5775                                    "mesh" : "P2P group");
5776                         if (nl80211_vif_addr(drv, new_addr) < 0) {
5777                                 if (added)
5778                                         nl80211_remove_iface(drv, ifidx);
5779                                 return -1;
5780                         }
5781                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
5782                                                new_addr) < 0) {
5783                                 if (added)
5784                                         nl80211_remove_iface(drv, ifidx);
5785                                 return -1;
5786                         }
5787                 }
5788                 os_memcpy(if_addr, new_addr, ETH_ALEN);
5789         }
5790 #endif /* CONFIG_P2P || CONFIG_MESH */
5791
5792         if (type == WPA_IF_AP_BSS) {
5793                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
5794                 if (new_bss == NULL) {
5795                         if (added)
5796                                 nl80211_remove_iface(drv, ifidx);
5797                         return -1;
5798                 }
5799
5800                 if (bridge &&
5801                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
5802                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
5803                                    "interface %s to a bridge %s",
5804                                    ifname, bridge);
5805                         if (added)
5806                                 nl80211_remove_iface(drv, ifidx);
5807                         os_free(new_bss);
5808                         return -1;
5809                 }
5810
5811                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
5812                 {
5813                         if (added)
5814                                 nl80211_remove_iface(drv, ifidx);
5815                         os_free(new_bss);
5816                         return -1;
5817                 }
5818                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5819                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
5820                 new_bss->ifindex = ifidx;
5821                 new_bss->drv = drv;
5822                 new_bss->next = drv->first_bss->next;
5823                 new_bss->freq = drv->first_bss->freq;
5824                 new_bss->ctx = bss_ctx;
5825                 new_bss->added_if = added;
5826                 drv->first_bss->next = new_bss;
5827                 if (drv_priv)
5828                         *drv_priv = new_bss;
5829                 nl80211_init_bss(new_bss);
5830
5831                 /* Subscribe management frames for this WPA_IF_AP_BSS */
5832                 if (nl80211_setup_ap(new_bss))
5833                         return -1;
5834         }
5835
5836         if (drv->global)
5837                 drv->global->if_add_ifindex = ifidx;
5838
5839         /*
5840          * Some virtual interfaces need to process EAPOL packets and events on
5841          * the parent interface. This is used mainly with hostapd.
5842          */
5843         if (ifidx > 0 &&
5844             (drv->hostapd ||
5845              nlmode == NL80211_IFTYPE_AP_VLAN ||
5846              nlmode == NL80211_IFTYPE_WDS ||
5847              nlmode == NL80211_IFTYPE_MONITOR))
5848                 add_ifidx(drv, ifidx);
5849
5850         return 0;
5851 }
5852
5853
5854 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
5855                                         enum wpa_driver_if_type type,
5856                                         const char *ifname)
5857 {
5858         struct wpa_driver_nl80211_data *drv = bss->drv;
5859         int ifindex = if_nametoindex(ifname);
5860
5861         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
5862                    __func__, type, ifname, ifindex, bss->added_if);
5863         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
5864                 nl80211_remove_iface(drv, ifindex);
5865         else if (ifindex > 0 && !bss->added_if) {
5866                 struct wpa_driver_nl80211_data *drv2;
5867                 dl_list_for_each(drv2, &drv->global->interfaces,
5868                                  struct wpa_driver_nl80211_data, list)
5869                         del_ifidx(drv2, ifindex);
5870         }
5871
5872         if (type != WPA_IF_AP_BSS)
5873                 return 0;
5874
5875         if (bss->added_if_into_bridge) {
5876                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
5877                                     bss->ifname) < 0)
5878                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5879                                    "interface %s from bridge %s: %s",
5880                                    bss->ifname, bss->brname, strerror(errno));
5881         }
5882         if (bss->added_bridge) {
5883                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
5884                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5885                                    "bridge %s: %s",
5886                                    bss->brname, strerror(errno));
5887         }
5888
5889         if (bss != drv->first_bss) {
5890                 struct i802_bss *tbss;
5891
5892                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
5893                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
5894                         if (tbss->next == bss) {
5895                                 tbss->next = bss->next;
5896                                 /* Unsubscribe management frames */
5897                                 nl80211_teardown_ap(bss);
5898                                 nl80211_destroy_bss(bss);
5899                                 if (!bss->added_if)
5900                                         i802_set_iface_flags(bss, 0);
5901                                 os_free(bss);
5902                                 bss = NULL;
5903                                 break;
5904                         }
5905                 }
5906                 if (bss)
5907                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
5908                                    "BSS %p in the list", __func__, bss);
5909         } else {
5910                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
5911                 nl80211_teardown_ap(bss);
5912                 if (!bss->added_if && !drv->first_bss->next)
5913                         wpa_driver_nl80211_del_beacon(drv);
5914                 nl80211_destroy_bss(bss);
5915                 if (!bss->added_if)
5916                         i802_set_iface_flags(bss, 0);
5917                 if (drv->first_bss->next) {
5918                         drv->first_bss = drv->first_bss->next;
5919                         drv->ctx = drv->first_bss->ctx;
5920                         os_free(bss);
5921                 } else {
5922                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
5923                 }
5924         }
5925
5926         return 0;
5927 }
5928
5929
5930 static int cookie_handler(struct nl_msg *msg, void *arg)
5931 {
5932         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5933         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5934         u64 *cookie = arg;
5935         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5936                   genlmsg_attrlen(gnlh, 0), NULL);
5937         if (tb[NL80211_ATTR_COOKIE])
5938                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5939         return NL_SKIP;
5940 }
5941
5942
5943 static int nl80211_send_frame_cmd(struct i802_bss *bss,
5944                                   unsigned int freq, unsigned int wait,
5945                                   const u8 *buf, size_t buf_len,
5946                                   u64 *cookie_out, int no_cck, int no_ack,
5947                                   int offchanok)
5948 {
5949         struct wpa_driver_nl80211_data *drv = bss->drv;
5950         struct nl_msg *msg;
5951         u64 cookie;
5952         int ret = -1;
5953
5954         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
5955                    "no_ack=%d offchanok=%d",
5956                    freq, wait, no_cck, no_ack, offchanok);
5957         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
5958
5959         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
5960             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
5961             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
5962             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
5963                            drv->test_use_roc_tx) &&
5964              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
5965             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
5966             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
5967             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
5968                 goto fail;
5969
5970         cookie = 0;
5971         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5972         msg = NULL;
5973         if (ret) {
5974                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5975                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
5976                            freq, wait);
5977         } else {
5978                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
5979                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
5980                            (long long unsigned int) cookie);
5981
5982                 if (cookie_out)
5983                         *cookie_out = no_ack ? (u64) -1 : cookie;
5984         }
5985
5986 fail:
5987         nlmsg_free(msg);
5988         return ret;
5989 }
5990
5991
5992 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
5993                                           unsigned int freq,
5994                                           unsigned int wait_time,
5995                                           const u8 *dst, const u8 *src,
5996                                           const u8 *bssid,
5997                                           const u8 *data, size_t data_len,
5998                                           int no_cck)
5999 {
6000         struct wpa_driver_nl80211_data *drv = bss->drv;
6001         int ret = -1;
6002         u8 *buf;
6003         struct ieee80211_hdr *hdr;
6004
6005         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6006                    "freq=%u MHz wait=%d ms no_cck=%d)",
6007                    drv->ifindex, freq, wait_time, no_cck);
6008
6009         buf = os_zalloc(24 + data_len);
6010         if (buf == NULL)
6011                 return ret;
6012         os_memcpy(buf + 24, data, data_len);
6013         hdr = (struct ieee80211_hdr *) buf;
6014         hdr->frame_control =
6015                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6016         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6017         os_memcpy(hdr->addr2, src, ETH_ALEN);
6018         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6019
6020         if (is_ap_interface(drv->nlmode) &&
6021             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6022              (int) freq == bss->freq || drv->device_ap_sme ||
6023              !drv->use_monitor))
6024                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6025                                                    0, freq, no_cck, 1,
6026                                                    wait_time);
6027         else
6028                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6029                                              24 + data_len,
6030                                              &drv->send_action_cookie,
6031                                              no_cck, 0, 1);
6032
6033         os_free(buf);
6034         return ret;
6035 }
6036
6037
6038 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6039 {
6040         struct i802_bss *bss = priv;
6041         struct wpa_driver_nl80211_data *drv = bss->drv;
6042         struct nl_msg *msg;
6043         int ret;
6044
6045         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6046                    (long long unsigned int) drv->send_action_cookie);
6047         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6048             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6049                 nlmsg_free(msg);
6050                 return;
6051         }
6052
6053         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6054         if (ret)
6055                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6056                            "(%s)", ret, strerror(-ret));
6057 }
6058
6059
6060 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6061                                                 unsigned int duration)
6062 {
6063         struct i802_bss *bss = priv;
6064         struct wpa_driver_nl80211_data *drv = bss->drv;
6065         struct nl_msg *msg;
6066         int ret;
6067         u64 cookie;
6068
6069         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6070             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6071             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6072                 nlmsg_free(msg);
6073                 return -1;
6074         }
6075
6076         cookie = 0;
6077         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6078         if (ret == 0) {
6079                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6080                            "0x%llx for freq=%u MHz duration=%u",
6081                            (long long unsigned int) cookie, freq, duration);
6082                 drv->remain_on_chan_cookie = cookie;
6083                 drv->pending_remain_on_chan = 1;
6084                 return 0;
6085         }
6086         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6087                    "(freq=%d duration=%u): %d (%s)",
6088                    freq, duration, ret, strerror(-ret));
6089         return -1;
6090 }
6091
6092
6093 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6094 {
6095         struct i802_bss *bss = priv;
6096         struct wpa_driver_nl80211_data *drv = bss->drv;
6097         struct nl_msg *msg;
6098         int ret;
6099
6100         if (!drv->pending_remain_on_chan) {
6101                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6102                            "to cancel");
6103                 return -1;
6104         }
6105
6106         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6107                    "0x%llx",
6108                    (long long unsigned int) drv->remain_on_chan_cookie);
6109
6110         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6111         if (!msg ||
6112             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6113                 nlmsg_free(msg);
6114                 return -1;
6115         }
6116
6117         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6118         if (ret == 0)
6119                 return 0;
6120         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6121                    "%d (%s)", ret, strerror(-ret));
6122         return -1;
6123 }
6124
6125
6126 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6127 {
6128         struct wpa_driver_nl80211_data *drv = bss->drv;
6129
6130         if (!report) {
6131                 if (bss->nl_preq && drv->device_ap_sme &&
6132                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6133                     !bss->static_ap) {
6134                         /*
6135                          * Do not disable Probe Request reporting that was
6136                          * enabled in nl80211_setup_ap().
6137                          */
6138                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6139                                    "Probe Request reporting nl_preq=%p while "
6140                                    "in AP mode", bss->nl_preq);
6141                 } else if (bss->nl_preq) {
6142                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6143                                    "reporting nl_preq=%p", bss->nl_preq);
6144                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6145                 }
6146                 return 0;
6147         }
6148
6149         if (bss->nl_preq) {
6150                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6151                            "already on! nl_preq=%p", bss->nl_preq);
6152                 return 0;
6153         }
6154
6155         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6156         if (bss->nl_preq == NULL)
6157                 return -1;
6158         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6159                    "reporting nl_preq=%p", bss->nl_preq);
6160
6161         if (nl80211_register_frame(bss, bss->nl_preq,
6162                                    (WLAN_FC_TYPE_MGMT << 2) |
6163                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6164                                    NULL, 0) < 0)
6165                 goto out_err;
6166
6167         nl80211_register_eloop_read(&bss->nl_preq,
6168                                     wpa_driver_nl80211_event_receive,
6169                                     bss->nl_cb);
6170
6171         return 0;
6172
6173  out_err:
6174         nl_destroy_handles(&bss->nl_preq);
6175         return -1;
6176 }
6177
6178
6179 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6180                                      int ifindex, int disabled)
6181 {
6182         struct nl_msg *msg;
6183         struct nlattr *bands, *band;
6184         int ret;
6185
6186         wpa_printf(MSG_DEBUG,
6187                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6188                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6189                    "no NL80211_TXRATE_LEGACY constraint");
6190
6191         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6192                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6193         if (!msg)
6194                 return -1;
6195
6196         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6197         if (!bands)
6198                 goto fail;
6199
6200         /*
6201          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6202          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6203          * rates. All 5 GHz rates are left enabled.
6204          */
6205         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6206         if (!band ||
6207             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6208                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6209                 goto fail;
6210         nla_nest_end(msg, band);
6211
6212         nla_nest_end(msg, bands);
6213
6214         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6215         if (ret) {
6216                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6217                            "(%s)", ret, strerror(-ret));
6218         } else
6219                 drv->disabled_11b_rates = disabled;
6220
6221         return ret;
6222
6223 fail:
6224         nlmsg_free(msg);
6225         return -1;
6226 }
6227
6228
6229 static int wpa_driver_nl80211_deinit_ap(void *priv)
6230 {
6231         struct i802_bss *bss = priv;
6232         struct wpa_driver_nl80211_data *drv = bss->drv;
6233         if (!is_ap_interface(drv->nlmode))
6234                 return -1;
6235         wpa_driver_nl80211_del_beacon(drv);
6236         bss->beacon_set = 0;
6237
6238         /*
6239          * If the P2P GO interface was dynamically added, then it is
6240          * possible that the interface change to station is not possible.
6241          */
6242         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6243                 return 0;
6244
6245         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6246 }
6247
6248
6249 static int wpa_driver_nl80211_stop_ap(void *priv)
6250 {
6251         struct i802_bss *bss = priv;
6252         struct wpa_driver_nl80211_data *drv = bss->drv;
6253         if (!is_ap_interface(drv->nlmode))
6254                 return -1;
6255         wpa_driver_nl80211_del_beacon(drv);
6256         bss->beacon_set = 0;
6257         return 0;
6258 }
6259
6260
6261 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6262 {
6263         struct i802_bss *bss = priv;
6264         struct wpa_driver_nl80211_data *drv = bss->drv;
6265         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6266                 return -1;
6267
6268         /*
6269          * If the P2P Client interface was dynamically added, then it is
6270          * possible that the interface change to station is not possible.
6271          */
6272         if (bss->if_dynamic)
6273                 return 0;
6274
6275         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6276 }
6277
6278
6279 static void wpa_driver_nl80211_resume(void *priv)
6280 {
6281         struct i802_bss *bss = priv;
6282
6283         if (i802_set_iface_flags(bss, 1))
6284                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6285 }
6286
6287
6288 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6289 {
6290         struct i802_bss *bss = priv;
6291         struct wpa_driver_nl80211_data *drv = bss->drv;
6292         struct nl_msg *msg;
6293         struct nlattr *cqm;
6294
6295         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6296                    "hysteresis=%d", threshold, hysteresis);
6297
6298         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6299             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6300             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6301             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6302                 nlmsg_free(msg);
6303                 return -1;
6304         }
6305         nla_nest_end(msg, cqm);
6306
6307         return send_and_recv_msgs(drv, msg, NULL, NULL);
6308 }
6309
6310
6311 static int get_channel_width(struct nl_msg *msg, void *arg)
6312 {
6313         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6314         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6315         struct wpa_signal_info *sig_change = arg;
6316
6317         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6318                   genlmsg_attrlen(gnlh, 0), NULL);
6319
6320         sig_change->center_frq1 = -1;
6321         sig_change->center_frq2 = -1;
6322         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6323
6324         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6325                 sig_change->chanwidth = convert2width(
6326                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6327                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6328                         sig_change->center_frq1 =
6329                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6330                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6331                         sig_change->center_frq2 =
6332                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6333         }
6334
6335         return NL_SKIP;
6336 }
6337
6338
6339 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6340                                      struct wpa_signal_info *sig)
6341 {
6342         struct nl_msg *msg;
6343
6344         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6345         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6346 }
6347
6348
6349 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6350 {
6351         struct i802_bss *bss = priv;
6352         struct wpa_driver_nl80211_data *drv = bss->drv;
6353         int res;
6354
6355         os_memset(si, 0, sizeof(*si));
6356         res = nl80211_get_link_signal(drv, si);
6357         if (res != 0)
6358                 return res;
6359
6360         res = nl80211_get_channel_width(drv, si);
6361         if (res != 0)
6362                 return res;
6363
6364         return nl80211_get_link_noise(drv, si);
6365 }
6366
6367
6368 static int wpa_driver_nl80211_shared_freq(void *priv)
6369 {
6370         struct i802_bss *bss = priv;
6371         struct wpa_driver_nl80211_data *drv = bss->drv;
6372         struct wpa_driver_nl80211_data *driver;
6373         int freq = 0;
6374
6375         /*
6376          * If the same PHY is in connected state with some other interface,
6377          * then retrieve the assoc freq.
6378          */
6379         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
6380                    drv->phyname);
6381
6382         dl_list_for_each(driver, &drv->global->interfaces,
6383                          struct wpa_driver_nl80211_data, list) {
6384                 if (drv == driver ||
6385                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
6386                     !driver->associated)
6387                         continue;
6388
6389                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
6390                            MACSTR,
6391                            driver->phyname, driver->first_bss->ifname,
6392                            MAC2STR(driver->first_bss->addr));
6393                 if (is_ap_interface(driver->nlmode))
6394                         freq = driver->first_bss->freq;
6395                 else
6396                         freq = nl80211_get_assoc_freq(driver);
6397                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
6398                            drv->phyname, freq);
6399         }
6400
6401         if (!freq)
6402                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
6403                            "PHY (%s) in associated state", drv->phyname);
6404
6405         return freq;
6406 }
6407
6408
6409 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6410                               int encrypt)
6411 {
6412         struct i802_bss *bss = priv;
6413         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6414                                              0, 0, 0, 0);
6415 }
6416
6417
6418 static int nl80211_set_param(void *priv, const char *param)
6419 {
6420         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6421         if (param == NULL)
6422                 return 0;
6423
6424 #ifdef CONFIG_P2P
6425         if (os_strstr(param, "use_p2p_group_interface=1")) {
6426                 struct i802_bss *bss = priv;
6427                 struct wpa_driver_nl80211_data *drv = bss->drv;
6428
6429                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6430                            "interface");
6431                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6432                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6433         }
6434 #endif /* CONFIG_P2P */
6435
6436         if (os_strstr(param, "use_monitor=1")) {
6437                 struct i802_bss *bss = priv;
6438                 struct wpa_driver_nl80211_data *drv = bss->drv;
6439                 drv->use_monitor = 1;
6440         }
6441
6442         if (os_strstr(param, "force_connect_cmd=1")) {
6443                 struct i802_bss *bss = priv;
6444                 struct wpa_driver_nl80211_data *drv = bss->drv;
6445                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6446                 drv->force_connect_cmd = 1;
6447         }
6448
6449         if (os_strstr(param, "no_offchannel_tx=1")) {
6450                 struct i802_bss *bss = priv;
6451                 struct wpa_driver_nl80211_data *drv = bss->drv;
6452                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6453                 drv->test_use_roc_tx = 1;
6454         }
6455
6456         return 0;
6457 }
6458
6459
6460 static void * nl80211_global_init(void)
6461 {
6462         struct nl80211_global *global;
6463         struct netlink_config *cfg;
6464
6465         global = os_zalloc(sizeof(*global));
6466         if (global == NULL)
6467                 return NULL;
6468         global->ioctl_sock = -1;
6469         dl_list_init(&global->interfaces);
6470         global->if_add_ifindex = -1;
6471
6472         cfg = os_zalloc(sizeof(*cfg));
6473         if (cfg == NULL)
6474                 goto err;
6475
6476         cfg->ctx = global;
6477         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6478         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6479         global->netlink = netlink_init(cfg);
6480         if (global->netlink == NULL) {
6481                 os_free(cfg);
6482                 goto err;
6483         }
6484
6485         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6486                 goto err;
6487
6488         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6489         if (global->ioctl_sock < 0) {
6490                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6491                            strerror(errno));
6492                 goto err;
6493         }
6494
6495         return global;
6496
6497 err:
6498         nl80211_global_deinit(global);
6499         return NULL;
6500 }
6501
6502
6503 static void nl80211_global_deinit(void *priv)
6504 {
6505         struct nl80211_global *global = priv;
6506         if (global == NULL)
6507                 return;
6508         if (!dl_list_empty(&global->interfaces)) {
6509                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6510                            "nl80211_global_deinit",
6511                            dl_list_len(&global->interfaces));
6512         }
6513
6514         if (global->netlink)
6515                 netlink_deinit(global->netlink);
6516
6517         nl_destroy_handles(&global->nl);
6518
6519         if (global->nl_event)
6520                 nl80211_destroy_eloop_handle(&global->nl_event);
6521
6522         nl_cb_put(global->nl_cb);
6523
6524         if (global->ioctl_sock >= 0)
6525                 close(global->ioctl_sock);
6526
6527         os_free(global);
6528 }
6529
6530
6531 static const char * nl80211_get_radio_name(void *priv)
6532 {
6533         struct i802_bss *bss = priv;
6534         struct wpa_driver_nl80211_data *drv = bss->drv;
6535         return drv->phyname;
6536 }
6537
6538
6539 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6540                          const u8 *pmkid)
6541 {
6542         struct nl_msg *msg;
6543
6544         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6545             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6546             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6547                 nlmsg_free(msg);
6548                 return -ENOBUFS;
6549         }
6550
6551         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6552 }
6553
6554
6555 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6556 {
6557         struct i802_bss *bss = priv;
6558         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6559         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6560 }
6561
6562
6563 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6564 {
6565         struct i802_bss *bss = priv;
6566         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6567                    MAC2STR(bssid));
6568         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6569 }
6570
6571
6572 static int nl80211_flush_pmkid(void *priv)
6573 {
6574         struct i802_bss *bss = priv;
6575         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6576         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6577 }
6578
6579
6580 static void clean_survey_results(struct survey_results *survey_results)
6581 {
6582         struct freq_survey *survey, *tmp;
6583
6584         if (dl_list_empty(&survey_results->survey_list))
6585                 return;
6586
6587         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6588                               struct freq_survey, list) {
6589                 dl_list_del(&survey->list);
6590                 os_free(survey);
6591         }
6592 }
6593
6594
6595 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6596                        struct dl_list *survey_list)
6597 {
6598         struct freq_survey *survey;
6599
6600         survey = os_zalloc(sizeof(struct freq_survey));
6601         if  (!survey)
6602                 return;
6603
6604         survey->ifidx = ifidx;
6605         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6606         survey->filled = 0;
6607
6608         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6609                 survey->nf = (int8_t)
6610                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6611                 survey->filled |= SURVEY_HAS_NF;
6612         }
6613
6614         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6615                 survey->channel_time =
6616                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6617                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6618         }
6619
6620         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6621                 survey->channel_time_busy =
6622                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6623                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6624         }
6625
6626         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6627                 survey->channel_time_rx =
6628                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6629                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6630         }
6631
6632         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6633                 survey->channel_time_tx =
6634                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6635                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6636         }
6637
6638         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)",
6639                    survey->freq,
6640                    survey->nf,
6641                    (unsigned long int) survey->channel_time,
6642                    (unsigned long int) survey->channel_time_busy,
6643                    (unsigned long int) survey->channel_time_tx,
6644                    (unsigned long int) survey->channel_time_rx,
6645                    survey->filled);
6646
6647         dl_list_add_tail(survey_list, &survey->list);
6648 }
6649
6650
6651 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6652                            unsigned int freq_filter)
6653 {
6654         if (!freq_filter)
6655                 return 1;
6656
6657         return freq_filter == surveyed_freq;
6658 }
6659
6660
6661 static int survey_handler(struct nl_msg *msg, void *arg)
6662 {
6663         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6664         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6665         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6666         struct survey_results *survey_results;
6667         u32 surveyed_freq = 0;
6668         u32 ifidx;
6669
6670         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6671                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
6672                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
6673         };
6674
6675         survey_results = (struct survey_results *) arg;
6676
6677         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6678                   genlmsg_attrlen(gnlh, 0), NULL);
6679
6680         if (!tb[NL80211_ATTR_IFINDEX])
6681                 return NL_SKIP;
6682
6683         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
6684
6685         if (!tb[NL80211_ATTR_SURVEY_INFO])
6686                 return NL_SKIP;
6687
6688         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
6689                              tb[NL80211_ATTR_SURVEY_INFO],
6690                              survey_policy))
6691                 return NL_SKIP;
6692
6693         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
6694                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
6695                 return NL_SKIP;
6696         }
6697
6698         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6699
6700         if (!check_survey_ok(sinfo, surveyed_freq,
6701                              survey_results->freq_filter))
6702                 return NL_SKIP;
6703
6704         if (survey_results->freq_filter &&
6705             survey_results->freq_filter != surveyed_freq) {
6706                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
6707                            surveyed_freq);
6708                 return NL_SKIP;
6709         }
6710
6711         add_survey(sinfo, ifidx, &survey_results->survey_list);
6712
6713         return NL_SKIP;
6714 }
6715
6716
6717 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
6718 {
6719         struct i802_bss *bss = priv;
6720         struct wpa_driver_nl80211_data *drv = bss->drv;
6721         struct nl_msg *msg;
6722         int err;
6723         union wpa_event_data data;
6724         struct survey_results *survey_results;
6725
6726         os_memset(&data, 0, sizeof(data));
6727         survey_results = &data.survey_results;
6728
6729         dl_list_init(&survey_results->survey_list);
6730
6731         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
6732         if (!msg)
6733                 return -ENOBUFS;
6734
6735         if (freq)
6736                 data.survey_results.freq_filter = freq;
6737
6738         do {
6739                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
6740                 err = send_and_recv_msgs(drv, msg, survey_handler,
6741                                          survey_results);
6742         } while (err > 0);
6743
6744         if (err)
6745                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
6746         else
6747                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
6748
6749         clean_survey_results(survey_results);
6750         return err;
6751 }
6752
6753
6754 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
6755                                    const u8 *replay_ctr)
6756 {
6757         struct i802_bss *bss = priv;
6758         struct wpa_driver_nl80211_data *drv = bss->drv;
6759         struct nlattr *replay_nested;
6760         struct nl_msg *msg;
6761         int ret;
6762
6763         if (!drv->set_rekey_offload)
6764                 return;
6765
6766         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
6767         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
6768             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
6769             nla_put(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek) ||
6770             nla_put(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck) ||
6771             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
6772                     replay_ctr)) {
6773                 nl80211_nlmsg_clear(msg);
6774                 nlmsg_free(msg);
6775                 return;
6776         }
6777
6778         nla_nest_end(msg, replay_nested);
6779
6780         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
6781         if (ret == -EOPNOTSUPP) {
6782                 wpa_printf(MSG_DEBUG,
6783                            "nl80211: Driver does not support rekey offload");
6784                 drv->set_rekey_offload = 0;
6785         }
6786 }
6787
6788
6789 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
6790                                     const u8 *addr, int qos)
6791 {
6792         /* send data frame to poll STA and check whether
6793          * this frame is ACKed */
6794         struct {
6795                 struct ieee80211_hdr hdr;
6796                 u16 qos_ctl;
6797         } STRUCT_PACKED nulldata;
6798         size_t size;
6799
6800         /* Send data frame to poll STA and check whether this frame is ACKed */
6801
6802         os_memset(&nulldata, 0, sizeof(nulldata));
6803
6804         if (qos) {
6805                 nulldata.hdr.frame_control =
6806                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6807                                      WLAN_FC_STYPE_QOS_NULL);
6808                 size = sizeof(nulldata);
6809         } else {
6810                 nulldata.hdr.frame_control =
6811                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6812                                      WLAN_FC_STYPE_NULLFUNC);
6813                 size = sizeof(struct ieee80211_hdr);
6814         }
6815
6816         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
6817         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6818         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6819         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6820
6821         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
6822                                          0, 0) < 0)
6823                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
6824                            "send poll frame");
6825 }
6826
6827 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
6828                                 int qos)
6829 {
6830         struct i802_bss *bss = priv;
6831         struct wpa_driver_nl80211_data *drv = bss->drv;
6832         struct nl_msg *msg;
6833
6834         if (!drv->poll_command_supported) {
6835                 nl80211_send_null_frame(bss, own_addr, addr, qos);
6836                 return;
6837         }
6838
6839         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
6840             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
6841                 nlmsg_free(msg);
6842                 return;
6843         }
6844
6845         send_and_recv_msgs(drv, msg, NULL, NULL);
6846 }
6847
6848
6849 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
6850 {
6851         struct nl_msg *msg;
6852
6853         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
6854             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
6855                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
6856                 nlmsg_free(msg);
6857                 return -ENOBUFS;
6858         }
6859         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6860 }
6861
6862
6863 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
6864                                      int ctwindow)
6865 {
6866         struct i802_bss *bss = priv;
6867
6868         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
6869                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
6870
6871         if (opp_ps != -1 || ctwindow != -1) {
6872 #ifdef ANDROID_P2P
6873                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
6874 #else /* ANDROID_P2P */
6875                 return -1; /* Not yet supported */
6876 #endif /* ANDROID_P2P */
6877         }
6878
6879         if (legacy_ps == -1)
6880                 return 0;
6881         if (legacy_ps != 0 && legacy_ps != 1)
6882                 return -1; /* Not yet supported */
6883
6884         return nl80211_set_power_save(bss, legacy_ps);
6885 }
6886
6887
6888 static int nl80211_start_radar_detection(void *priv,
6889                                          struct hostapd_freq_params *freq)
6890 {
6891         struct i802_bss *bss = priv;
6892         struct wpa_driver_nl80211_data *drv = bss->drv;
6893         struct nl_msg *msg;
6894         int ret;
6895
6896         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)",
6897                    freq->freq, freq->ht_enabled, freq->vht_enabled,
6898                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
6899
6900         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
6901                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
6902                            "detection");
6903                 return -1;
6904         }
6905
6906         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
6907             nl80211_put_freq_params(msg, freq) < 0) {
6908                 nlmsg_free(msg);
6909                 return -1;
6910         }
6911
6912         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6913         if (ret == 0)
6914                 return 0;
6915         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
6916                    "%d (%s)", ret, strerror(-ret));
6917         return -1;
6918 }
6919
6920 #ifdef CONFIG_TDLS
6921
6922 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
6923                                   u8 dialog_token, u16 status_code,
6924                                   u32 peer_capab, int initiator, const u8 *buf,
6925                                   size_t len)
6926 {
6927         struct i802_bss *bss = priv;
6928         struct wpa_driver_nl80211_data *drv = bss->drv;
6929         struct nl_msg *msg;
6930
6931         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
6932                 return -EOPNOTSUPP;
6933
6934         if (!dst)
6935                 return -EINVAL;
6936
6937         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
6938             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6939             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
6940             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
6941             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
6942                 goto fail;
6943         if (peer_capab) {
6944                 /*
6945                  * The internal enum tdls_peer_capability definition is
6946                  * currently identical with the nl80211 enum
6947                  * nl80211_tdls_peer_capability, so no conversion is needed
6948                  * here.
6949                  */
6950                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
6951                                 peer_capab))
6952                         goto fail;
6953         }
6954         if ((initiator &&
6955              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
6956             nla_put(msg, NL80211_ATTR_IE, len, buf))
6957                 goto fail;
6958
6959         return send_and_recv_msgs(drv, msg, NULL, NULL);
6960
6961 fail:
6962         nlmsg_free(msg);
6963         return -ENOBUFS;
6964 }
6965
6966
6967 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
6968 {
6969         struct i802_bss *bss = priv;
6970         struct wpa_driver_nl80211_data *drv = bss->drv;
6971         struct nl_msg *msg;
6972         enum nl80211_tdls_operation nl80211_oper;
6973
6974         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
6975                 return -EOPNOTSUPP;
6976
6977         switch (oper) {
6978         case TDLS_DISCOVERY_REQ:
6979                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
6980                 break;
6981         case TDLS_SETUP:
6982                 nl80211_oper = NL80211_TDLS_SETUP;
6983                 break;
6984         case TDLS_TEARDOWN:
6985                 nl80211_oper = NL80211_TDLS_TEARDOWN;
6986                 break;
6987         case TDLS_ENABLE_LINK:
6988                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
6989                 break;
6990         case TDLS_DISABLE_LINK:
6991                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
6992                 break;
6993         case TDLS_ENABLE:
6994                 return 0;
6995         case TDLS_DISABLE:
6996                 return 0;
6997         default:
6998                 return -EINVAL;
6999         }
7000
7001         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7002             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7003             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7004                 nlmsg_free(msg);
7005                 return -ENOBUFS;
7006         }
7007
7008         return send_and_recv_msgs(drv, msg, NULL, NULL);
7009 }
7010
7011
7012 static int
7013 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7014                                    const struct hostapd_freq_params *params)
7015 {
7016         struct i802_bss *bss = priv;
7017         struct wpa_driver_nl80211_data *drv = bss->drv;
7018         struct nl_msg *msg;
7019         int ret = -ENOBUFS;
7020
7021         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7022             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7023                 return -EOPNOTSUPP;
7024
7025         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7026                    " oper_class=%u freq=%u",
7027                    MAC2STR(addr), oper_class, params->freq);
7028         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7029         if (!msg ||
7030             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7031             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7032             (ret = nl80211_put_freq_params(msg, params))) {
7033                 nlmsg_free(msg);
7034                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7035                 return ret;
7036         }
7037
7038         return send_and_recv_msgs(drv, msg, NULL, NULL);
7039 }
7040
7041
7042 static int
7043 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7044 {
7045         struct i802_bss *bss = priv;
7046         struct wpa_driver_nl80211_data *drv = bss->drv;
7047         struct nl_msg *msg;
7048
7049         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7050             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7051                 return -EOPNOTSUPP;
7052
7053         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7054                    MAC2STR(addr));
7055         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7056         if (!msg ||
7057             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7058                 nlmsg_free(msg);
7059                 wpa_printf(MSG_DEBUG,
7060                            "nl80211: Could not build TDLS cancel chan switch");
7061                 return -ENOBUFS;
7062         }
7063
7064         return send_and_recv_msgs(drv, msg, NULL, NULL);
7065 }
7066
7067 #endif /* CONFIG TDLS */
7068
7069
7070 static int driver_nl80211_set_key(const char *ifname, void *priv,
7071                                   enum wpa_alg alg, const u8 *addr,
7072                                   int key_idx, int set_tx,
7073                                   const u8 *seq, size_t seq_len,
7074                                   const u8 *key, size_t key_len)
7075 {
7076         struct i802_bss *bss = priv;
7077         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7078                                           set_tx, seq, seq_len, key, key_len);
7079 }
7080
7081
7082 static int driver_nl80211_scan2(void *priv,
7083                                 struct wpa_driver_scan_params *params)
7084 {
7085         struct i802_bss *bss = priv;
7086         return wpa_driver_nl80211_scan(bss, params);
7087 }
7088
7089
7090 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7091                                          int reason_code)
7092 {
7093         struct i802_bss *bss = priv;
7094         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7095 }
7096
7097
7098 static int driver_nl80211_authenticate(void *priv,
7099                                        struct wpa_driver_auth_params *params)
7100 {
7101         struct i802_bss *bss = priv;
7102         return wpa_driver_nl80211_authenticate(bss, params);
7103 }
7104
7105
7106 static void driver_nl80211_deinit(void *priv)
7107 {
7108         struct i802_bss *bss = priv;
7109         wpa_driver_nl80211_deinit(bss);
7110 }
7111
7112
7113 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7114                                     const char *ifname)
7115 {
7116         struct i802_bss *bss = priv;
7117         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7118 }
7119
7120
7121 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7122                                     size_t data_len, int noack)
7123 {
7124         struct i802_bss *bss = priv;
7125         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7126                                             0, 0, 0, 0);
7127 }
7128
7129
7130 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7131 {
7132         struct i802_bss *bss = priv;
7133         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7134 }
7135
7136
7137 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7138                                        const char *ifname, int vlan_id)
7139 {
7140         struct i802_bss *bss = priv;
7141         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7142 }
7143
7144
7145 static int driver_nl80211_read_sta_data(void *priv,
7146                                         struct hostap_sta_driver_data *data,
7147                                         const u8 *addr)
7148 {
7149         struct i802_bss *bss = priv;
7150         return i802_read_sta_data(bss, data, addr);
7151 }
7152
7153
7154 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7155                                       unsigned int wait_time,
7156                                       const u8 *dst, const u8 *src,
7157                                       const u8 *bssid,
7158                                       const u8 *data, size_t data_len,
7159                                       int no_cck)
7160 {
7161         struct i802_bss *bss = priv;
7162         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7163                                               bssid, data, data_len, no_cck);
7164 }
7165
7166
7167 static int driver_nl80211_probe_req_report(void *priv, int report)
7168 {
7169         struct i802_bss *bss = priv;
7170         return wpa_driver_nl80211_probe_req_report(bss, report);
7171 }
7172
7173
7174 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7175                                             const u8 *ies, size_t ies_len)
7176 {
7177         int ret;
7178         struct nl_msg *msg;
7179         struct i802_bss *bss = priv;
7180         struct wpa_driver_nl80211_data *drv = bss->drv;
7181         u16 mdid = WPA_GET_LE16(md);
7182
7183         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7184         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7185             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7186             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7187                 nlmsg_free(msg);
7188                 return -ENOBUFS;
7189         }
7190
7191         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7192         if (ret) {
7193                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7194                            "err=%d (%s)", ret, strerror(-ret));
7195         }
7196
7197         return ret;
7198 }
7199
7200
7201 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7202 {
7203         struct i802_bss *bss = priv;
7204         struct wpa_driver_nl80211_data *drv = bss->drv;
7205
7206         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7207                 return NULL;
7208
7209         return bss->addr;
7210 }
7211
7212
7213 static const char * scan_state_str(enum scan_states scan_state)
7214 {
7215         switch (scan_state) {
7216         case NO_SCAN:
7217                 return "NO_SCAN";
7218         case SCAN_REQUESTED:
7219                 return "SCAN_REQUESTED";
7220         case SCAN_STARTED:
7221                 return "SCAN_STARTED";
7222         case SCAN_COMPLETED:
7223                 return "SCAN_COMPLETED";
7224         case SCAN_ABORTED:
7225                 return "SCAN_ABORTED";
7226         case SCHED_SCAN_STARTED:
7227                 return "SCHED_SCAN_STARTED";
7228         case SCHED_SCAN_STOPPED:
7229                 return "SCHED_SCAN_STOPPED";
7230         case SCHED_SCAN_RESULTS:
7231                 return "SCHED_SCAN_RESULTS";
7232         }
7233
7234         return "??";
7235 }
7236
7237
7238 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7239 {
7240         struct i802_bss *bss = priv;
7241         struct wpa_driver_nl80211_data *drv = bss->drv;
7242         int res;
7243         char *pos, *end;
7244
7245         pos = buf;
7246         end = buf + buflen;
7247
7248         res = os_snprintf(pos, end - pos,
7249                           "ifindex=%d\n"
7250                           "ifname=%s\n"
7251                           "brname=%s\n"
7252                           "addr=" MACSTR "\n"
7253                           "freq=%d\n"
7254                           "%s%s%s%s%s",
7255                           bss->ifindex,
7256                           bss->ifname,
7257                           bss->brname,
7258                           MAC2STR(bss->addr),
7259                           bss->freq,
7260                           bss->beacon_set ? "beacon_set=1\n" : "",
7261                           bss->added_if_into_bridge ?
7262                           "added_if_into_bridge=1\n" : "",
7263                           bss->added_bridge ? "added_bridge=1\n" : "",
7264                           bss->in_deinit ? "in_deinit=1\n" : "",
7265                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7266         if (os_snprintf_error(end - pos, res))
7267                 return pos - buf;
7268         pos += res;
7269
7270         if (bss->wdev_id_set) {
7271                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7272                                   (unsigned long long) bss->wdev_id);
7273                 if (os_snprintf_error(end - pos, res))
7274                         return pos - buf;
7275                 pos += res;
7276         }
7277
7278         res = os_snprintf(pos, end - pos,
7279                           "phyname=%s\n"
7280                           "perm_addr=" MACSTR "\n"
7281                           "drv_ifindex=%d\n"
7282                           "operstate=%d\n"
7283                           "scan_state=%s\n"
7284                           "auth_bssid=" MACSTR "\n"
7285                           "auth_attempt_bssid=" MACSTR "\n"
7286                           "bssid=" MACSTR "\n"
7287                           "prev_bssid=" MACSTR "\n"
7288                           "associated=%d\n"
7289                           "assoc_freq=%u\n"
7290                           "monitor_sock=%d\n"
7291                           "monitor_ifidx=%d\n"
7292                           "monitor_refcount=%d\n"
7293                           "last_mgmt_freq=%u\n"
7294                           "eapol_tx_sock=%d\n"
7295                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7296                           drv->phyname,
7297                           MAC2STR(drv->perm_addr),
7298                           drv->ifindex,
7299                           drv->operstate,
7300                           scan_state_str(drv->scan_state),
7301                           MAC2STR(drv->auth_bssid),
7302                           MAC2STR(drv->auth_attempt_bssid),
7303                           MAC2STR(drv->bssid),
7304                           MAC2STR(drv->prev_bssid),
7305                           drv->associated,
7306                           drv->assoc_freq,
7307                           drv->monitor_sock,
7308                           drv->monitor_ifidx,
7309                           drv->monitor_refcount,
7310                           drv->last_mgmt_freq,
7311                           drv->eapol_tx_sock,
7312                           drv->ignore_if_down_event ?
7313                           "ignore_if_down_event=1\n" : "",
7314                           drv->scan_complete_events ?
7315                           "scan_complete_events=1\n" : "",
7316                           drv->disabled_11b_rates ?
7317                           "disabled_11b_rates=1\n" : "",
7318                           drv->pending_remain_on_chan ?
7319                           "pending_remain_on_chan=1\n" : "",
7320                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7321                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7322                           drv->poll_command_supported ?
7323                           "poll_command_supported=1\n" : "",
7324                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7325                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7326                           drv->retry_auth ? "retry_auth=1\n" : "",
7327                           drv->use_monitor ? "use_monitor=1\n" : "",
7328                           drv->ignore_next_local_disconnect ?
7329                           "ignore_next_local_disconnect=1\n" : "",
7330                           drv->ignore_next_local_deauth ?
7331                           "ignore_next_local_deauth=1\n" : "");
7332         if (os_snprintf_error(end - pos, res))
7333                 return pos - buf;
7334         pos += res;
7335
7336         if (drv->has_capability) {
7337                 res = os_snprintf(pos, end - pos,
7338                                   "capa.key_mgmt=0x%x\n"
7339                                   "capa.enc=0x%x\n"
7340                                   "capa.auth=0x%x\n"
7341                                   "capa.flags=0x%llx\n"
7342                                   "capa.rrm_flags=0x%x\n"
7343                                   "capa.max_scan_ssids=%d\n"
7344                                   "capa.max_sched_scan_ssids=%d\n"
7345                                   "capa.sched_scan_supported=%d\n"
7346                                   "capa.max_match_sets=%d\n"
7347                                   "capa.max_remain_on_chan=%u\n"
7348                                   "capa.max_stations=%u\n"
7349                                   "capa.probe_resp_offloads=0x%x\n"
7350                                   "capa.max_acl_mac_addrs=%u\n"
7351                                   "capa.num_multichan_concurrent=%u\n"
7352                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7353                                   "capa.mac_addr_rand_scan_supported=%d\n",
7354                                   drv->capa.key_mgmt,
7355                                   drv->capa.enc,
7356                                   drv->capa.auth,
7357                                   (unsigned long long) drv->capa.flags,
7358                                   drv->capa.rrm_flags,
7359                                   drv->capa.max_scan_ssids,
7360                                   drv->capa.max_sched_scan_ssids,
7361                                   drv->capa.sched_scan_supported,
7362                                   drv->capa.max_match_sets,
7363                                   drv->capa.max_remain_on_chan,
7364                                   drv->capa.max_stations,
7365                                   drv->capa.probe_resp_offloads,
7366                                   drv->capa.max_acl_mac_addrs,
7367                                   drv->capa.num_multichan_concurrent,
7368                                   drv->capa.mac_addr_rand_sched_scan_supported,
7369                                   drv->capa.mac_addr_rand_scan_supported);
7370                 if (os_snprintf_error(end - pos, res))
7371                         return pos - buf;
7372                 pos += res;
7373         }
7374
7375         return pos - buf;
7376 }
7377
7378
7379 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7380 {
7381         if ((settings->head &&
7382              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7383                      settings->head_len, settings->head)) ||
7384             (settings->tail &&
7385              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7386                      settings->tail_len, settings->tail)) ||
7387             (settings->beacon_ies &&
7388              nla_put(msg, NL80211_ATTR_IE,
7389                      settings->beacon_ies_len, settings->beacon_ies)) ||
7390             (settings->proberesp_ies &&
7391              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7392                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7393             (settings->assocresp_ies &&
7394              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7395                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7396             (settings->probe_resp &&
7397              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7398                      settings->probe_resp_len, settings->probe_resp)))
7399                 return -ENOBUFS;
7400
7401         return 0;
7402 }
7403
7404
7405 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7406 {
7407         struct nl_msg *msg;
7408         struct i802_bss *bss = priv;
7409         struct wpa_driver_nl80211_data *drv = bss->drv;
7410         struct nlattr *beacon_csa;
7411         int ret = -ENOBUFS;
7412
7413         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7414                    settings->cs_count, settings->block_tx,
7415                    settings->freq_params.freq, settings->freq_params.bandwidth,
7416                    settings->freq_params.center_freq1,
7417                    settings->freq_params.center_freq2);
7418
7419         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7420                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7421                 return -EOPNOTSUPP;
7422         }
7423
7424         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7425             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7426                 return -EOPNOTSUPP;
7427
7428         /* check settings validity */
7429         if (!settings->beacon_csa.tail ||
7430             ((settings->beacon_csa.tail_len <=
7431               settings->counter_offset_beacon) ||
7432              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
7433               settings->cs_count)))
7434                 return -EINVAL;
7435
7436         if (settings->beacon_csa.probe_resp &&
7437             ((settings->beacon_csa.probe_resp_len <=
7438               settings->counter_offset_presp) ||
7439              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
7440               settings->cs_count)))
7441                 return -EINVAL;
7442
7443         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7444             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7445                         settings->cs_count) ||
7446             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7447             (settings->block_tx &&
7448              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7449                 goto error;
7450
7451         /* beacon_after params */
7452         ret = set_beacon_data(msg, &settings->beacon_after);
7453         if (ret)
7454                 goto error;
7455
7456         /* beacon_csa params */
7457         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7458         if (!beacon_csa)
7459                 goto fail;
7460
7461         ret = set_beacon_data(msg, &settings->beacon_csa);
7462         if (ret)
7463                 goto error;
7464
7465         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7466                         settings->counter_offset_beacon) ||
7467             (settings->beacon_csa.probe_resp &&
7468              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7469                          settings->counter_offset_presp)))
7470                 goto fail;
7471
7472         nla_nest_end(msg, beacon_csa);
7473         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7474         if (ret) {
7475                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7476                            ret, strerror(-ret));
7477         }
7478         return ret;
7479
7480 fail:
7481         ret = -ENOBUFS;
7482 error:
7483         nlmsg_free(msg);
7484         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7485         return ret;
7486 }
7487
7488
7489 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7490                           u8 user_priority, u16 admitted_time)
7491 {
7492         struct i802_bss *bss = priv;
7493         struct wpa_driver_nl80211_data *drv = bss->drv;
7494         struct nl_msg *msg;
7495         int ret;
7496
7497         wpa_printf(MSG_DEBUG,
7498                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7499                    tsid, admitted_time, user_priority);
7500
7501         if (!is_sta_interface(drv->nlmode))
7502                 return -ENOTSUP;
7503
7504         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7505         if (!msg ||
7506             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7507             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7508             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7509             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7510                 nlmsg_free(msg);
7511                 return -ENOBUFS;
7512         }
7513
7514         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7515         if (ret)
7516                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7517                            ret, strerror(-ret));
7518         return ret;
7519 }
7520
7521
7522 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
7523 {
7524         struct i802_bss *bss = priv;
7525         struct wpa_driver_nl80211_data *drv = bss->drv;
7526         struct nl_msg *msg;
7527         int ret;
7528
7529         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7530
7531         if (!is_sta_interface(drv->nlmode))
7532                 return -ENOTSUP;
7533
7534         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7535             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7536             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7537                 nlmsg_free(msg);
7538                 return -ENOBUFS;
7539         }
7540
7541         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7542         if (ret)
7543                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7544                            ret, strerror(-ret));
7545         return ret;
7546 }
7547
7548
7549 #ifdef CONFIG_TESTING_OPTIONS
7550 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7551 {
7552         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7553         struct wpabuf *buf = arg;
7554
7555         if (!buf)
7556                 return NL_SKIP;
7557
7558         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7559                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7560                 return NL_SKIP;
7561         }
7562
7563         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7564                         genlmsg_attrlen(gnlh, 0));
7565
7566         return NL_SKIP;
7567 }
7568 #endif /* CONFIG_TESTING_OPTIONS */
7569
7570
7571 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7572 {
7573         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7574         struct nlattr *nl_vendor_reply, *nl;
7575         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7576         struct wpabuf *buf = arg;
7577         int rem;
7578
7579         if (!buf)
7580                 return NL_SKIP;
7581
7582         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7583                   genlmsg_attrlen(gnlh, 0), NULL);
7584         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7585
7586         if (!nl_vendor_reply)
7587                 return NL_SKIP;
7588
7589         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7590                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7591                 return NL_SKIP;
7592         }
7593
7594         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7595                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7596         }
7597
7598         return NL_SKIP;
7599 }
7600
7601
7602 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
7603                               unsigned int subcmd, const u8 *data,
7604                               size_t data_len, struct wpabuf *buf)
7605 {
7606         struct i802_bss *bss = priv;
7607         struct wpa_driver_nl80211_data *drv = bss->drv;
7608         struct nl_msg *msg;
7609         int ret;
7610
7611 #ifdef CONFIG_TESTING_OPTIONS
7612         if (vendor_id == 0xffffffff) {
7613                 msg = nlmsg_alloc();
7614                 if (!msg)
7615                         return -ENOMEM;
7616
7617                 nl80211_cmd(drv, msg, 0, subcmd);
7618                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
7619                     0)
7620                         goto fail;
7621                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
7622                 if (ret)
7623                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
7624                                    ret);
7625                 return ret;
7626         }
7627 #endif /* CONFIG_TESTING_OPTIONS */
7628
7629         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
7630             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
7631             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
7632             (data &&
7633              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
7634                 goto fail;
7635
7636         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
7637         if (ret)
7638                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
7639                            ret);
7640         return ret;
7641
7642 fail:
7643         nlmsg_free(msg);
7644         return -ENOBUFS;
7645 }
7646
7647
7648 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
7649                                u8 qos_map_set_len)
7650 {
7651         struct i802_bss *bss = priv;
7652         struct wpa_driver_nl80211_data *drv = bss->drv;
7653         struct nl_msg *msg;
7654         int ret;
7655
7656         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
7657                     qos_map_set, qos_map_set_len);
7658
7659         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
7660             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
7661                 nlmsg_free(msg);
7662                 return -ENOBUFS;
7663         }
7664
7665         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7666         if (ret)
7667                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
7668
7669         return ret;
7670 }
7671
7672
7673 static int nl80211_set_wowlan(void *priv,
7674                               const struct wowlan_triggers *triggers)
7675 {
7676         struct i802_bss *bss = priv;
7677         struct wpa_driver_nl80211_data *drv = bss->drv;
7678         struct nl_msg *msg;
7679         struct nlattr *wowlan_triggers;
7680         int ret;
7681
7682         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
7683
7684         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WOWLAN)) ||
7685             !(wowlan_triggers = nla_nest_start(msg,
7686                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
7687             (triggers->any &&
7688              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7689             (triggers->disconnect &&
7690              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7691             (triggers->magic_pkt &&
7692              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7693             (triggers->gtk_rekey_failure &&
7694              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7695             (triggers->eap_identity_req &&
7696              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7697             (triggers->four_way_handshake &&
7698              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7699             (triggers->rfkill_release &&
7700              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
7701                 nlmsg_free(msg);
7702                 return -ENOBUFS;
7703         }
7704
7705         nla_nest_end(msg, wowlan_triggers);
7706
7707         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7708         if (ret)
7709                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
7710
7711         return ret;
7712 }
7713
7714
7715 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
7716 {
7717         struct i802_bss *bss = priv;
7718         struct wpa_driver_nl80211_data *drv = bss->drv;
7719         struct nl_msg *msg;
7720         struct nlattr *params;
7721
7722         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
7723
7724         if (!drv->roaming_vendor_cmd_avail) {
7725                 wpa_printf(MSG_DEBUG,
7726                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
7727                 return -1;
7728         }
7729
7730         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
7731             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
7732             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
7733                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
7734             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
7735             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
7736                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
7737                         QCA_ROAMING_NOT_ALLOWED) ||
7738             (bssid &&
7739              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
7740                 nlmsg_free(msg);
7741                 return -1;
7742         }
7743         nla_nest_end(msg, params);
7744
7745         return send_and_recv_msgs(drv, msg, NULL, NULL);
7746 }
7747
7748
7749 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
7750 {
7751         struct i802_bss *bss = priv;
7752         struct wpa_driver_nl80211_data *drv = bss->drv;
7753         int new_addr = addr != NULL;
7754
7755         if (!addr)
7756                 addr = drv->perm_addr;
7757
7758         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
7759                 return -1;
7760
7761         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
7762         {
7763                 wpa_printf(MSG_DEBUG,
7764                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
7765                            bss->ifname, MAC2STR(addr));
7766                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
7767                                           1) < 0) {
7768                         wpa_printf(MSG_DEBUG,
7769                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
7770                 }
7771                 return -1;
7772         }
7773
7774         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
7775                    bss->ifname, MAC2STR(addr));
7776         drv->addr_changed = new_addr;
7777         os_memcpy(bss->addr, addr, ETH_ALEN);
7778
7779         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
7780         {
7781                 wpa_printf(MSG_DEBUG,
7782                            "nl80211: Could not restore interface UP after set_mac_addr");
7783         }
7784
7785         return 0;
7786 }
7787
7788
7789 #ifdef CONFIG_MESH
7790
7791 static int wpa_driver_nl80211_init_mesh(void *priv)
7792 {
7793         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
7794                 wpa_printf(MSG_INFO,
7795                            "nl80211: Failed to set interface into mesh mode");
7796                 return -1;
7797         }
7798         return 0;
7799 }
7800
7801
7802 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
7803                                size_t mesh_id_len)
7804 {
7805         if (mesh_id) {
7806                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
7807                                   mesh_id, mesh_id_len);
7808                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
7809         }
7810
7811         return 0;
7812 }
7813
7814
7815 static int
7816 wpa_driver_nl80211_join_mesh(void *priv,
7817                              struct wpa_driver_mesh_join_params *params)
7818 {
7819         struct i802_bss *bss = priv;
7820         struct wpa_driver_nl80211_data *drv = bss->drv;
7821         struct nl_msg *msg;
7822         struct nlattr *container;
7823         int ret = 0;
7824         u32 timeout;
7825
7826         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
7827         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
7828         if (!msg ||
7829             nl80211_put_freq_params(msg, &params->freq) ||
7830             nl80211_put_basic_rates(msg, params->basic_rates) ||
7831             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
7832             nl80211_put_beacon_int(msg, params->beacon_int))
7833                 goto fail;
7834
7835         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
7836
7837         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
7838         if (!container)
7839                 goto fail;
7840
7841         if (params->ies) {
7842                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
7843                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
7844                             params->ies))
7845                         goto fail;
7846         }
7847         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
7848         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
7849                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
7850                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
7851                         goto fail;
7852         }
7853         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
7854             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
7855                 goto fail;
7856         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
7857             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
7858                 goto fail;
7859         nla_nest_end(msg, container);
7860
7861         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
7862         if (!container)
7863                 goto fail;
7864
7865         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
7866             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
7867                 goto fail;
7868         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
7869             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7870                         params->max_peer_links))
7871                 goto fail;
7872
7873         /*
7874          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
7875          * the timer could disconnect stations even in that case.
7876          *
7877          * Set 0xffffffff instead of 0 because NL80211_MESHCONF_PLINK_TIMEOUT
7878          * does not allow 0.
7879          */
7880         timeout = params->conf.peer_link_timeout;
7881         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) || timeout == 0)
7882                 timeout = 0xffffffff;
7883         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, timeout)) {
7884                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
7885                 goto fail;
7886         }
7887
7888         nla_nest_end(msg, container);
7889
7890         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7891         msg = NULL;
7892         if (ret) {
7893                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
7894                            ret, strerror(-ret));
7895                 goto fail;
7896         }
7897         ret = 0;
7898         bss->freq = params->freq.freq;
7899         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
7900
7901 fail:
7902         nlmsg_free(msg);
7903         return ret;
7904 }
7905
7906
7907 static int wpa_driver_nl80211_leave_mesh(void *priv)
7908 {
7909         struct i802_bss *bss = priv;
7910         struct wpa_driver_nl80211_data *drv = bss->drv;
7911         struct nl_msg *msg;
7912         int ret;
7913
7914         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
7915         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
7916         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7917         if (ret) {
7918                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
7919                            ret, strerror(-ret));
7920         } else {
7921                 wpa_printf(MSG_DEBUG,
7922                            "nl80211: mesh leave request send successfully");
7923         }
7924
7925         if (wpa_driver_nl80211_set_mode(drv->first_bss,
7926                                         NL80211_IFTYPE_STATION)) {
7927                 wpa_printf(MSG_INFO,
7928                            "nl80211: Failed to set interface into station mode");
7929         }
7930         return ret;
7931 }
7932
7933 #endif /* CONFIG_MESH */
7934
7935
7936 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
7937                                       const u8 *ipaddr, int prefixlen,
7938                                       const u8 *addr)
7939 {
7940 #ifdef CONFIG_LIBNL3_ROUTE
7941         struct i802_bss *bss = priv;
7942         struct wpa_driver_nl80211_data *drv = bss->drv;
7943         struct rtnl_neigh *rn;
7944         struct nl_addr *nl_ipaddr = NULL;
7945         struct nl_addr *nl_lladdr = NULL;
7946         int family, addrsize;
7947         int res;
7948
7949         if (!ipaddr || prefixlen == 0 || !addr)
7950                 return -EINVAL;
7951
7952         if (bss->br_ifindex == 0) {
7953                 wpa_printf(MSG_DEBUG,
7954                            "nl80211: bridge must be set before adding an ip neigh to it");
7955                 return -1;
7956         }
7957
7958         if (!drv->rtnl_sk) {
7959                 wpa_printf(MSG_DEBUG,
7960                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
7961                 return -1;
7962         }
7963
7964         if (version == 4) {
7965                 family = AF_INET;
7966                 addrsize = 4;
7967         } else if (version == 6) {
7968                 family = AF_INET6;
7969                 addrsize = 16;
7970         } else {
7971                 return -EINVAL;
7972         }
7973
7974         rn = rtnl_neigh_alloc();
7975         if (rn == NULL)
7976                 return -ENOMEM;
7977
7978         /* set the destination ip address for neigh */
7979         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
7980         if (nl_ipaddr == NULL) {
7981                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
7982                 res = -ENOMEM;
7983                 goto errout;
7984         }
7985         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
7986         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
7987         if (res) {
7988                 wpa_printf(MSG_DEBUG,
7989                            "nl80211: neigh set destination addr failed");
7990                 goto errout;
7991         }
7992
7993         /* set the corresponding lladdr for neigh */
7994         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
7995         if (nl_lladdr == NULL) {
7996                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
7997                 res = -ENOMEM;
7998                 goto errout;
7999         }
8000         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8001
8002         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8003         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8004
8005         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8006         if (res) {
8007                 wpa_printf(MSG_DEBUG,
8008                            "nl80211: Adding bridge ip neigh failed: %s",
8009                            strerror(errno));
8010         }
8011 errout:
8012         if (nl_lladdr)
8013                 nl_addr_put(nl_lladdr);
8014         if (nl_ipaddr)
8015                 nl_addr_put(nl_ipaddr);
8016         if (rn)
8017                 rtnl_neigh_put(rn);
8018         return res;
8019 #else /* CONFIG_LIBNL3_ROUTE */
8020         return -1;
8021 #endif /* CONFIG_LIBNL3_ROUTE */
8022 }
8023
8024
8025 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8026                                          const u8 *ipaddr)
8027 {
8028 #ifdef CONFIG_LIBNL3_ROUTE
8029         struct i802_bss *bss = priv;
8030         struct wpa_driver_nl80211_data *drv = bss->drv;
8031         struct rtnl_neigh *rn;
8032         struct nl_addr *nl_ipaddr;
8033         int family, addrsize;
8034         int res;
8035
8036         if (!ipaddr)
8037                 return -EINVAL;
8038
8039         if (version == 4) {
8040                 family = AF_INET;
8041                 addrsize = 4;
8042         } else if (version == 6) {
8043                 family = AF_INET6;
8044                 addrsize = 16;
8045         } else {
8046                 return -EINVAL;
8047         }
8048
8049         if (bss->br_ifindex == 0) {
8050                 wpa_printf(MSG_DEBUG,
8051                            "nl80211: bridge must be set to delete an ip neigh");
8052                 return -1;
8053         }
8054
8055         if (!drv->rtnl_sk) {
8056                 wpa_printf(MSG_DEBUG,
8057                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8058                 return -1;
8059         }
8060
8061         rn = rtnl_neigh_alloc();
8062         if (rn == NULL)
8063                 return -ENOMEM;
8064
8065         /* set the destination ip address for neigh */
8066         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8067         if (nl_ipaddr == NULL) {
8068                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8069                 res = -ENOMEM;
8070                 goto errout;
8071         }
8072         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8073         if (res) {
8074                 wpa_printf(MSG_DEBUG,
8075                            "nl80211: neigh set destination addr failed");
8076                 goto errout;
8077         }
8078
8079         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8080
8081         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8082         if (res) {
8083                 wpa_printf(MSG_DEBUG,
8084                            "nl80211: Deleting bridge ip neigh failed: %s",
8085                            strerror(errno));
8086         }
8087 errout:
8088         if (nl_ipaddr)
8089                 nl_addr_put(nl_ipaddr);
8090         if (rn)
8091                 rtnl_neigh_put(rn);
8092         return res;
8093 #else /* CONFIG_LIBNL3_ROUTE */
8094         return -1;
8095 #endif /* CONFIG_LIBNL3_ROUTE */
8096 }
8097
8098
8099 static int linux_write_system_file(const char *path, unsigned int val)
8100 {
8101         char buf[50];
8102         int fd, len;
8103
8104         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8105         if (os_snprintf_error(sizeof(buf), len))
8106                 return -1;
8107
8108         fd = open(path, O_WRONLY);
8109         if (fd < 0)
8110                 return -1;
8111
8112         if (write(fd, buf, len) < 0) {
8113                 wpa_printf(MSG_DEBUG,
8114                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8115                            path, val);
8116                 close(fd);
8117                 return -1;
8118         }
8119         close(fd);
8120
8121         return 0;
8122 }
8123
8124
8125 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8126 {
8127         switch (attr) {
8128         case DRV_BR_PORT_ATTR_PROXYARP:
8129                 return "proxyarp";
8130         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8131                 return "hairpin_mode";
8132         }
8133
8134         return NULL;
8135 }
8136
8137
8138 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8139                                        unsigned int val)
8140 {
8141         struct i802_bss *bss = priv;
8142         char path[128];
8143         const char *attr_txt;
8144
8145         attr_txt = drv_br_port_attr_str(attr);
8146         if (attr_txt == NULL)
8147                 return -EINVAL;
8148
8149         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8150                     bss->ifname, attr_txt);
8151
8152         if (linux_write_system_file(path, val))
8153                 return -1;
8154
8155         return 0;
8156 }
8157
8158
8159 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8160 {
8161         switch (param) {
8162         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8163                 return "arp_accept";
8164         }
8165
8166         return NULL;
8167 }
8168
8169
8170 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8171                                        unsigned int val)
8172 {
8173         struct i802_bss *bss = priv;
8174         char path[128];
8175         const char *param_txt;
8176         int ip_version = 4;
8177
8178         param_txt = drv_br_net_param_str(param);
8179         if (param_txt == NULL)
8180                 return -EINVAL;
8181
8182         switch (param) {
8183                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8184                         ip_version = 4;
8185                         break;
8186                 default:
8187                         return -EINVAL;
8188         }
8189
8190         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8191                     ip_version, bss->brname, param_txt);
8192
8193         if (linux_write_system_file(path, val))
8194                 return -1;
8195
8196         return 0;
8197 }
8198
8199
8200 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8201 {
8202         switch (hw_mode) {
8203         case HOSTAPD_MODE_IEEE80211B:
8204                 return QCA_ACS_MODE_IEEE80211B;
8205         case HOSTAPD_MODE_IEEE80211G:
8206                 return QCA_ACS_MODE_IEEE80211G;
8207         case HOSTAPD_MODE_IEEE80211A:
8208                 return QCA_ACS_MODE_IEEE80211A;
8209         case HOSTAPD_MODE_IEEE80211AD:
8210                 return QCA_ACS_MODE_IEEE80211AD;
8211         default:
8212                 return -1;
8213         }
8214 }
8215
8216
8217 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8218 {
8219         struct i802_bss *bss = priv;
8220         struct wpa_driver_nl80211_data *drv = bss->drv;
8221         struct nl_msg *msg;
8222         struct nlattr *data;
8223         int ret;
8224         int mode;
8225
8226         mode = hw_mode_to_qca_acs(params->hw_mode);
8227         if (mode < 0)
8228                 return -1;
8229
8230         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8231             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8232             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8233                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8234             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8235             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8236             (params->ht_enabled &&
8237              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8238             (params->ht40_enabled &&
8239              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
8240                 nlmsg_free(msg);
8241                 return -ENOBUFS;
8242         }
8243         nla_nest_end(msg, data);
8244
8245         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8246         if (ret) {
8247                 wpa_printf(MSG_DEBUG,
8248                            "nl80211: Failed to invoke driver ACS function: %s",
8249                            strerror(errno));
8250         }
8251         return ret;
8252 }
8253
8254
8255 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8256         .name = "nl80211",
8257         .desc = "Linux nl80211/cfg80211",
8258         .get_bssid = wpa_driver_nl80211_get_bssid,
8259         .get_ssid = wpa_driver_nl80211_get_ssid,
8260         .set_key = driver_nl80211_set_key,
8261         .scan2 = driver_nl80211_scan2,
8262         .sched_scan = wpa_driver_nl80211_sched_scan,
8263         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8264         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8265         .deauthenticate = driver_nl80211_deauthenticate,
8266         .authenticate = driver_nl80211_authenticate,
8267         .associate = wpa_driver_nl80211_associate,
8268         .global_init = nl80211_global_init,
8269         .global_deinit = nl80211_global_deinit,
8270         .init2 = wpa_driver_nl80211_init,
8271         .deinit = driver_nl80211_deinit,
8272         .get_capa = wpa_driver_nl80211_get_capa,
8273         .set_operstate = wpa_driver_nl80211_set_operstate,
8274         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8275         .set_country = wpa_driver_nl80211_set_country,
8276         .get_country = wpa_driver_nl80211_get_country,
8277         .set_ap = wpa_driver_nl80211_set_ap,
8278         .set_acl = wpa_driver_nl80211_set_acl,
8279         .if_add = wpa_driver_nl80211_if_add,
8280         .if_remove = driver_nl80211_if_remove,
8281         .send_mlme = driver_nl80211_send_mlme,
8282         .get_hw_feature_data = nl80211_get_hw_feature_data,
8283         .sta_add = wpa_driver_nl80211_sta_add,
8284         .sta_remove = driver_nl80211_sta_remove,
8285         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8286         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8287         .hapd_init = i802_init,
8288         .hapd_deinit = i802_deinit,
8289         .set_wds_sta = i802_set_wds_sta,
8290         .get_seqnum = i802_get_seqnum,
8291         .flush = i802_flush,
8292         .get_inact_sec = i802_get_inact_sec,
8293         .sta_clear_stats = i802_sta_clear_stats,
8294         .set_rts = i802_set_rts,
8295         .set_frag = i802_set_frag,
8296         .set_tx_queue_params = i802_set_tx_queue_params,
8297         .set_sta_vlan = driver_nl80211_set_sta_vlan,
8298         .sta_deauth = i802_sta_deauth,
8299         .sta_disassoc = i802_sta_disassoc,
8300         .read_sta_data = driver_nl80211_read_sta_data,
8301         .set_freq = i802_set_freq,
8302         .send_action = driver_nl80211_send_action,
8303         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8304         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8305         .cancel_remain_on_channel =
8306         wpa_driver_nl80211_cancel_remain_on_channel,
8307         .probe_req_report = driver_nl80211_probe_req_report,
8308         .deinit_ap = wpa_driver_nl80211_deinit_ap,
8309         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
8310         .resume = wpa_driver_nl80211_resume,
8311         .signal_monitor = nl80211_signal_monitor,
8312         .signal_poll = nl80211_signal_poll,
8313         .send_frame = nl80211_send_frame,
8314         .shared_freq = wpa_driver_nl80211_shared_freq,
8315         .set_param = nl80211_set_param,
8316         .get_radio_name = nl80211_get_radio_name,
8317         .add_pmkid = nl80211_add_pmkid,
8318         .remove_pmkid = nl80211_remove_pmkid,
8319         .flush_pmkid = nl80211_flush_pmkid,
8320         .set_rekey_info = nl80211_set_rekey_info,
8321         .poll_client = nl80211_poll_client,
8322         .set_p2p_powersave = nl80211_set_p2p_powersave,
8323         .start_dfs_cac = nl80211_start_radar_detection,
8324         .stop_ap = wpa_driver_nl80211_stop_ap,
8325 #ifdef CONFIG_TDLS
8326         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8327         .tdls_oper = nl80211_tdls_oper,
8328         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
8329         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
8330 #endif /* CONFIG_TDLS */
8331         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
8332         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
8333         .get_survey = wpa_driver_nl80211_get_survey,
8334         .status = wpa_driver_nl80211_status,
8335         .switch_channel = nl80211_switch_channel,
8336 #ifdef ANDROID_P2P
8337         .set_noa = wpa_driver_set_p2p_noa,
8338         .get_noa = wpa_driver_get_p2p_noa,
8339         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
8340 #endif /* ANDROID_P2P */
8341 #ifdef ANDROID
8342         .driver_cmd = wpa_driver_nl80211_driver_cmd,
8343 #endif /* ANDROID */
8344         .vendor_cmd = nl80211_vendor_cmd,
8345         .set_qos_map = nl80211_set_qos_map,
8346         .set_wowlan = nl80211_set_wowlan,
8347         .roaming = nl80211_roaming,
8348         .set_mac_addr = nl80211_set_mac_addr,
8349 #ifdef CONFIG_MESH
8350         .init_mesh = wpa_driver_nl80211_init_mesh,
8351         .join_mesh = wpa_driver_nl80211_join_mesh,
8352         .leave_mesh = wpa_driver_nl80211_leave_mesh,
8353 #endif /* CONFIG_MESH */
8354         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
8355         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
8356         .br_port_set_attr = wpa_driver_br_port_set_attr,
8357         .br_set_net_param = wpa_driver_br_set_net_param,
8358         .add_tx_ts = nl80211_add_ts,
8359         .del_tx_ts = nl80211_del_ts,
8360         .do_acs = wpa_driver_do_acs,
8361 };