wlantest/rx_tdls.c

   1 /*
   2  * Received Data frame processing for TDLS packets
   3  * Copyright (c) 2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "crypto/sha256.h"
  13 #include "crypto/crypto.h"
  14 #include "crypto/aes_wrap.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/ieee802_11_common.h"
  17 #include "wlantest.h"
  18
  19
  20 static struct wlantest_tdls * get_tdls(struct wlantest *wt, const u8 *linkid,
  21                                        int create_new, const u8 *bssid)
  22 {
  23         struct wlantest_bss *bss;
  24         struct wlantest_sta *init, *resp;
  25         struct wlantest_tdls *tdls;
  26
  27         bss = bss_find(wt, linkid);
  28         if (bss == NULL && bssid) {
  29                 bss = bss_find(wt, bssid);
  30                 if (bss)
  31                         wpa_printf(MSG_INFO, "TDLS: Incorrect BSSID " MACSTR
  32                                    " in LinkId?! (init=" MACSTR " resp="
  33                                    MACSTR ")",
  34                                    MAC2STR(linkid), MAC2STR(linkid + ETH_ALEN),
  35                                    MAC2STR(linkid + 2 * ETH_ALEN));
  36         }
  37         if (bss == NULL)
  38                 return NULL;
  39
  40         init = sta_find(bss, linkid + ETH_ALEN);
  41         if (init == NULL)
  42                 return NULL;
  43
  44         resp = sta_find(bss, linkid + 2 * ETH_ALEN);
  45         if (resp == NULL)
  46                 return NULL;
  47
  48         dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
  49                 if (tdls->init == init && tdls->resp == resp)
  50                         return tdls;
  51         }
  52
  53         if (!create_new)
  54                 return NULL;
  55
  56         tdls = os_zalloc(sizeof(*tdls));
  57         if (tdls == NULL)
  58                 return NULL;
  59         tdls->init = init;
  60         tdls->resp = resp;
  61         dl_list_add(&bss->tdls, &tdls->list);
  62         return tdls;
  63 }
  64
  65
  66 static int tdls_derive_tpk(struct wlantest_tdls *tdls, const u8 *bssid,
  67                            const u8 *ftie, u8 ftie_len)
  68 {
  69         const struct rsn_ftie *f;
  70         u8 key_input[SHA256_MAC_LEN];
  71         const u8 *nonce[2];
  72         size_t len[2];
  73         u8 data[3 * ETH_ALEN];
  74
  75         if (ftie == NULL || ftie_len < sizeof(struct rsn_ftie))
  76                 return 0;
  77
  78         f = (const struct rsn_ftie *) ftie;
  79         wpa_hexdump(MSG_DEBUG, "TDLS ANonce", f->anonce, WPA_NONCE_LEN);
  80         wpa_hexdump(MSG_DEBUG, "TDLS SNonce", f->snonce, WPA_NONCE_LEN);
  81
  82         /*
  83          * IEEE Std 802.11z-2010 8.5.9.1:
  84          * TPK-Key-Input = SHA-256(min(SNonce, ANonce) || max(SNonce, ANonce))
  85          */
  86         len[0] = WPA_NONCE_LEN;
  87         len[1] = WPA_NONCE_LEN;
  88         if (os_memcmp(f->anonce, f->snonce, WPA_NONCE_LEN) < 0) {
  89                 nonce[0] = f->anonce;
  90                 nonce[1] = f->snonce;
  91         } else {
  92                 nonce[0] = f->snonce;
  93                 nonce[1] = f->anonce;
  94         }
  95         sha256_vector(2, nonce, len, key_input);
  96         wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-Key-Input",
  97                         key_input, SHA256_MAC_LEN);
  98
  99         /*
 100          * TPK-Key-Data = KDF-N_KEY(TPK-Key-Input, "TDLS PMK",
 101          *      min(MAC_I, MAC_R) || max(MAC_I, MAC_R) || BSSID || N_KEY)
 102          * TODO: is N_KEY really included in KDF Context and if so, in which
 103          * presentation format (little endian 16-bit?) is it used? It gets
 104          * added by the KDF anyway..
 105          */
 106
 107         if (os_memcmp(tdls->init->addr, tdls->resp->addr, ETH_ALEN) < 0) {
 108                 os_memcpy(data, tdls->init->addr, ETH_ALEN);
 109                 os_memcpy(data + ETH_ALEN, tdls->resp->addr, ETH_ALEN);
 110         } else {
 111                 os_memcpy(data, tdls->resp->addr, ETH_ALEN);
 112                 os_memcpy(data + ETH_ALEN, tdls->init->addr, ETH_ALEN);
 113         }
 114         os_memcpy(data + 2 * ETH_ALEN, bssid, ETH_ALEN);
 115         wpa_hexdump(MSG_DEBUG, "TDLS: KDF Context", data, sizeof(data));
 116
 117         sha256_prf(key_input, SHA256_MAC_LEN, "TDLS PMK", data, sizeof(data),
 118                    (u8 *) &tdls->tpk, sizeof(tdls->tpk));
 119         wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-KCK",
 120                         tdls->tpk.kck, sizeof(tdls->tpk.kck));
 121         wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-TK",
 122                         tdls->tpk.tk, sizeof(tdls->tpk.tk));
 123
 124         return 1;
 125 }
 126
 127
 128 static int tdls_verify_mic(struct wlantest_tdls *tdls, u8 trans_seq,
 129                            struct ieee802_11_elems *elems)
 130 {
 131         u8 *buf, *pos;
 132         int len;
 133         u8 mic[16];
 134         int ret;
 135         const struct rsn_ftie *rx_ftie;
 136         struct rsn_ftie *tmp_ftie;
 137
 138         if (elems->link_id == NULL || elems->rsn_ie == NULL ||
 139             elems->timeout_int == NULL || elems->ftie == NULL)
 140                 return -1;
 141
 142         len = 2 * ETH_ALEN + 1 + 2 + 18 + 2 + elems->rsn_ie_len +
 143                 2 + elems->timeout_int_len + 2 + elems->ftie_len;
 144
 145         buf = os_zalloc(len);
 146         if (buf == NULL)
 147                 return -1;
 148
 149         pos = buf;
 150         /* 1) TDLS initiator STA MAC address */
 151         os_memcpy(pos, elems->link_id + ETH_ALEN, ETH_ALEN);
 152         pos += ETH_ALEN;
 153         /* 2) TDLS responder STA MAC address */
 154         os_memcpy(pos, elems->link_id + 2 * ETH_ALEN, ETH_ALEN);
 155         pos += ETH_ALEN;
 156         /* 3) Transaction Sequence number */
 157         *pos++ = trans_seq;
 158         /* 4) Link Identifier IE */
 159         os_memcpy(pos, elems->link_id - 2, 2 + 18);
 160         pos += 2 + 18;
 161         /* 5) RSN IE */
 162         os_memcpy(pos, elems->rsn_ie - 2, 2 + elems->rsn_ie_len);
 163         pos += 2 + elems->rsn_ie_len;
 164         /* 6) Timeout Interval IE */
 165         os_memcpy(pos, elems->timeout_int - 2, 2 + elems->timeout_int_len);
 166         pos += 2 + elems->timeout_int_len;
 167         /* 7) FTIE, with the MIC field of the FTIE set to 0 */
 168         os_memcpy(pos, elems->ftie - 2, 2 + elems->ftie_len);
 169         pos += 2;
 170         tmp_ftie = (struct rsn_ftie *) pos;
 171         os_memset(tmp_ftie->mic, 0, 16);
 172         pos += elems->ftie_len;
 173
 174         wpa_hexdump(MSG_DEBUG, "TDLS: Data for FTIE MIC", buf, pos - buf);
 175         wpa_hexdump_key(MSG_DEBUG, "TDLS: KCK", tdls->tpk.kck, 16);
 176         ret = omac1_aes_128(tdls->tpk.kck, buf, pos - buf, mic);
 177         os_free(buf);
 178         if (ret)
 179                 return -1;
 180         wpa_hexdump(MSG_DEBUG, "TDLS: FTIE MIC", mic, 16);
 181         rx_ftie = (const struct rsn_ftie *) elems->ftie;
 182
 183         if (os_memcmp(mic, rx_ftie->mic, 16) == 0) {
 184                 wpa_printf(MSG_DEBUG, "TDLS: Valid MIC");
 185                 return 0;
 186         }
 187         wpa_printf(MSG_DEBUG, "TDLS: Invalid MIC");
 188         return -1;
 189 }
 190
 191
 192 static void rx_data_tdls_setup_request(struct wlantest *wt, const u8 *bssid,
 193                                        const u8 *sta_addr, const u8 *dst,
 194                                        const u8 *src,
 195                                        const u8 *data, size_t len)
 196 {
 197         struct ieee802_11_elems elems;
 198         struct wlantest_tdls *tdls;
 199
 200         if (len < 3) {
 201                 wpa_printf(MSG_INFO, "Too short TDLS Setup Request " MACSTR
 202                            " -> " MACSTR, MAC2STR(src), MAC2STR(dst));
 203                 return;
 204         }
 205         wpa_printf(MSG_DEBUG, "TDLS Setup Request " MACSTR " -> "
 206                    MACSTR, MAC2STR(src), MAC2STR(dst));
 207
 208         if (ieee802_11_parse_elems(data + 3, len - 3, &elems, 1) ==
 209             ParseFailed || elems.link_id == NULL)
 210                 return;
 211         wpa_printf(MSG_DEBUG, "TDLS Link Identifier: BSSID " MACSTR
 212                    " initiator STA " MACSTR " responder STA " MACSTR,
 213                    MAC2STR(elems.link_id), MAC2STR(elems.link_id + ETH_ALEN),
 214                    MAC2STR(elems.link_id + 2 * ETH_ALEN));
 215         tdls = get_tdls(wt, elems.link_id, 1, bssid);
 216         if (tdls) {
 217                 tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_REQ]++;
 218                 tdls->dialog_token = data[0];
 219         }
 220 }
 221
 222
 223 static void rx_data_tdls_setup_response_failure(struct wlantest *wt,
 224                                                 const u8 *bssid,
 225                                                 const u8 *sta_addr,
 226                                                 u8 dialog_token, u16 status)
 227 {
 228         struct wlantest_bss *bss;
 229         struct wlantest_tdls *tdls;
 230         struct wlantest_sta *sta;
 231
 232         if (status == WLAN_STATUS_SUCCESS) {
 233                 wpa_printf(MSG_INFO, "TDLS: Invalid TDLS Setup Response from "
 234                            MACSTR, MAC2STR(sta_addr));
 235                 return;
 236         }
 237
 238         bss = bss_find(wt, bssid);
 239         if (!bss)
 240                 return;
 241         sta = sta_find(bss, sta_addr);
 242         if (!sta)
 243                 return;
 244
 245         dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
 246                 if (tdls->resp == sta) {
 247                         if (dialog_token != tdls->dialog_token) {
 248                                 wpa_printf(MSG_DEBUG, "TDLS: Dialog token "
 249                                            "mismatch in TDLS Setup Response "
 250                                            "(failure)");
 251                                 break;
 252                         }
 253                         wpa_printf(MSG_DEBUG, "TDLS: Found matching TDLS "
 254                                    "setup session based on dialog token");
 255                         tdls->counters[
 256                                 WLANTEST_TDLS_COUNTER_SETUP_RESP_FAIL]++;
 257                         break;
 258                 }
 259         }
 260 }
 261
 262
 263 static void rx_data_tdls_setup_response(struct wlantest *wt, const u8 *bssid,
 264                                         const u8 *sta_addr, const u8 *dst,
 265                                         const u8 *src,
 266                                         const u8 *data, size_t len)
 267 {
 268         u16 status;
 269         struct ieee802_11_elems elems;
 270         struct wlantest_tdls *tdls;
 271
 272         if (len < 3) {
 273                 wpa_printf(MSG_INFO, "Too short TDLS Setup Response " MACSTR
 274                            " -> " MACSTR, MAC2STR(src), MAC2STR(dst));
 275                 return;
 276         }
 277         status = WPA_GET_LE16(data);
 278         wpa_printf(MSG_DEBUG, "TDLS Setup Response " MACSTR " -> "
 279                    MACSTR " (status %d)",
 280                    MAC2STR(src), MAC2STR(dst), status);
 281         if (len < 5 && status == 0) {
 282                 wpa_printf(MSG_INFO, "Too short TDLS Setup Response " MACSTR
 283                            " -> " MACSTR, MAC2STR(src), MAC2STR(dst));
 284                 return;
 285         }
 286
 287         if (len < 5 ||
 288             ieee802_11_parse_elems(data + 5, len - 5, &elems, 1) ==
 289             ParseFailed || elems.link_id == NULL) {
 290                 /* Need to match TDLS link based on Dialog Token */
 291                 rx_data_tdls_setup_response_failure(wt, bssid, sta_addr,
 292                                                     data[2], status);
 293                 return;
 294         }
 295         wpa_printf(MSG_DEBUG, "TDLS Link Identifier: BSSID " MACSTR
 296                    " initiator STA " MACSTR " responder STA " MACSTR,
 297                    MAC2STR(elems.link_id), MAC2STR(elems.link_id + ETH_ALEN),
 298                    MAC2STR(elems.link_id + 2 * ETH_ALEN));
 299
 300         tdls = get_tdls(wt, elems.link_id, 1, bssid);
 301         if (!tdls)
 302                 return;
 303         if (status)
 304                 tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_RESP_FAIL]++;
 305         else
 306                 tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_RESP_OK]++;
 307
 308         if (status != WLAN_STATUS_SUCCESS)
 309                 return;
 310
 311         if (tdls_derive_tpk(tdls, bssid, elems.ftie, elems.ftie_len) < 1)
 312                 return;
 313         if (tdls_verify_mic(tdls, 2, &elems) == 0) {
 314                 tdls->dialog_token = data[2];
 315                 wpa_printf(MSG_DEBUG, "TDLS: Dialog Token for the link: %u",
 316                            tdls->dialog_token);
 317         }
 318 }
 319
 320
 321 static void rx_data_tdls_setup_confirm_failure(struct wlantest *wt,
 322                                                const u8 *bssid,
 323                                                const u8 *src,
 324                                                u8 dialog_token, u16 status)
 325 {
 326         struct wlantest_bss *bss;
 327         struct wlantest_tdls *tdls;
 328         struct wlantest_sta *sta;
 329
 330         if (status == WLAN_STATUS_SUCCESS) {
 331                 wpa_printf(MSG_INFO, "TDLS: Invalid TDLS Setup Confirm from "
 332                            MACSTR, MAC2STR(src));
 333                 return;
 334         }
 335
 336         bss = bss_find(wt, bssid);
 337         if (!bss)
 338                 return;
 339         sta = sta_find(bss, src);
 340         if (!sta)
 341                 return;
 342
 343         dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
 344                 if (tdls->init == sta) {
 345                         if (dialog_token != tdls->dialog_token) {
 346                                 wpa_printf(MSG_DEBUG, "TDLS: Dialog token "
 347                                            "mismatch in TDLS Setup Confirm "
 348                                            "(failure)");
 349                                 break;
 350                         }
 351                         wpa_printf(MSG_DEBUG, "TDLS: Found matching TDLS "
 352                                    "setup session based on dialog token");
 353                         tdls->counters[
 354                                 WLANTEST_TDLS_COUNTER_SETUP_CONF_FAIL]++;
 355                         break;
 356                 }
 357         }
 358 }
 359
 360
 361 static void rx_data_tdls_setup_confirm(struct wlantest *wt, const u8 *bssid,
 362                                        const u8 *sta_addr, const u8 *dst,
 363                                        const u8 *src,
 364                                        const u8 *data, size_t len)
 365 {
 366         u16 status;
 367         struct ieee802_11_elems elems;
 368         struct wlantest_tdls *tdls;
 369         u8 link_id[3 * ETH_ALEN];
 370
 371         if (len < 3) {
 372                 wpa_printf(MSG_INFO, "Too short TDLS Setup Confirm " MACSTR
 373                            " -> " MACSTR, MAC2STR(src), MAC2STR(dst));
 374                 return;
 375         }
 376         status = WPA_GET_LE16(data);
 377         wpa_printf(MSG_DEBUG, "TDLS Setup Confirm " MACSTR " -> "
 378                    MACSTR " (status %d)",
 379                    MAC2STR(src), MAC2STR(dst), status);
 380
 381         if (ieee802_11_parse_elems(data + 3, len - 3, &elems, 1) ==
 382             ParseFailed || elems.link_id == NULL) {
 383                 /* Need to match TDLS link based on Dialog Token */
 384                 rx_data_tdls_setup_confirm_failure(wt, bssid, src,
 385                                                    data[2], status);
 386                 return;
 387         }
 388         wpa_printf(MSG_DEBUG, "TDLS Link Identifier: BSSID " MACSTR
 389                    " initiator STA " MACSTR " responder STA " MACSTR,
 390                    MAC2STR(elems.link_id), MAC2STR(elems.link_id + ETH_ALEN),
 391                    MAC2STR(elems.link_id + 2 * ETH_ALEN));
 392
 393         tdls = get_tdls(wt, elems.link_id, 1, bssid);
 394         if (tdls == NULL)
 395                 return;
 396         if (status)
 397                 tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_CONF_FAIL]++;
 398         else
 399                 tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_CONF_OK]++;
 400
 401         if (status != WLAN_STATUS_SUCCESS)
 402                 return;
 403
 404         tdls->link_up = 1;
 405         if (tdls_derive_tpk(tdls, bssid, elems.ftie, elems.ftie_len) < 1) {
 406                 if (elems.ftie == NULL)
 407                         goto remove_reverse;
 408                 return;
 409         }
 410         if (tdls_verify_mic(tdls, 3, &elems) == 0) {
 411                 tdls->dialog_token = data[2];
 412                 wpa_printf(MSG_DEBUG, "TDLS: Dialog Token for the link: %u",
 413                            tdls->dialog_token);
 414         }
 415
 416 remove_reverse:
 417         /*
 418          * The TDLS link itself is bidirectional, but there is explicit
 419          * initiator/responder roles. Remove the other direction of the link
 420          * (if it exists) to make sure that the link counters are stored for
 421          * the current TDLS entery.
 422          */
 423         os_memcpy(link_id, elems.link_id, ETH_ALEN);
 424         os_memcpy(link_id + ETH_ALEN, elems.link_id + 2 * ETH_ALEN, ETH_ALEN);
 425         os_memcpy(link_id + 2 * ETH_ALEN, elems.link_id + ETH_ALEN, ETH_ALEN);
 426         tdls = get_tdls(wt, link_id, 0, bssid);
 427         if (tdls) {
 428                 wpa_printf(MSG_DEBUG, "TDLS: Remove reverse link entry");
 429                 tdls_deinit(tdls);
 430         }
 431 }
 432
 433
 434 static int tdls_verify_mic_teardown(struct wlantest_tdls *tdls, u8 trans_seq,
 435                                     const u8 *reason_code,
 436                                     struct ieee802_11_elems *elems)
 437 {
 438         u8 *buf, *pos;
 439         int len;
 440         u8 mic[16];
 441         int ret;
 442         const struct rsn_ftie *rx_ftie;
 443         struct rsn_ftie *tmp_ftie;
 444
 445         if (elems->link_id == NULL || elems->ftie == NULL)
 446                 return -1;
 447
 448         len = 2 + 18 + 2 + 1 + 1 + 2 + elems->ftie_len;
 449
 450         buf = os_zalloc(len);
 451         if (buf == NULL)
 452                 return -1;
 453
 454         pos = buf;
 455         /* 1) Link Identifier IE */
 456         os_memcpy(pos, elems->link_id - 2, 2 + 18);
 457         pos += 2 + 18;
 458         /* 2) Reason Code */
 459         os_memcpy(pos, reason_code, 2);
 460         pos += 2;
 461         /* 3) Dialog token */
 462         *pos++ = tdls->dialog_token;
 463         /* 4) Transaction Sequence number */
 464         *pos++ = trans_seq;
 465         /* 5) FTIE, with the MIC field of the FTIE set to 0 */
 466         os_memcpy(pos, elems->ftie - 2, 2 + elems->ftie_len);
 467         pos += 2;
 468         tmp_ftie = (struct rsn_ftie *) pos;
 469         os_memset(tmp_ftie->mic, 0, 16);
 470         pos += elems->ftie_len;
 471
 472         wpa_hexdump(MSG_DEBUG, "TDLS: Data for FTIE MIC", buf, pos - buf);
 473         wpa_hexdump_key(MSG_DEBUG, "TDLS: KCK", tdls->tpk.kck, 16);
 474         ret = omac1_aes_128(tdls->tpk.kck, buf, pos - buf, mic);
 475         os_free(buf);
 476         if (ret)
 477                 return -1;
 478         wpa_hexdump(MSG_DEBUG, "TDLS: FTIE MIC", mic, 16);
 479         rx_ftie = (const struct rsn_ftie *) elems->ftie;
 480
 481         if (os_memcmp(mic, rx_ftie->mic, 16) == 0) {
 482                 wpa_printf(MSG_DEBUG, "TDLS: Valid MIC");
 483                 return 0;
 484         }
 485         wpa_printf(MSG_DEBUG, "TDLS: Invalid MIC");
 486         return -1;
 487 }
 488
 489
 490 static void rx_data_tdls_teardown(struct wlantest *wt, const u8 *bssid,
 491                                   const u8 *sta_addr, const u8 *dst,
 492                                   const u8 *src,
 493                                   const u8 *data, size_t len)
 494 {
 495         u16 reason;
 496         struct ieee802_11_elems elems;
 497         struct wlantest_tdls *tdls;
 498
 499         if (len < 2)
 500                 return;
 501         reason = WPA_GET_LE16(data);
 502         wpa_printf(MSG_DEBUG, "TDLS Teardown " MACSTR " -> "
 503                    MACSTR " (reason %d)",
 504                    MAC2STR(src), MAC2STR(dst), reason);
 505
 506         if (ieee802_11_parse_elems(data + 2, len - 2, &elems, 1) ==
 507             ParseFailed || elems.link_id == NULL)
 508                 return;
 509         wpa_printf(MSG_DEBUG, "TDLS Link Identifier: BSSID " MACSTR
 510                    " initiator STA " MACSTR " responder STA " MACSTR,
 511                    MAC2STR(elems.link_id), MAC2STR(elems.link_id + ETH_ALEN),
 512                    MAC2STR(elems.link_id + 2 * ETH_ALEN));
 513
 514         tdls = get_tdls(wt, elems.link_id, 1, bssid);
 515         if (tdls) {
 516                 tdls->link_up = 0;
 517                 tdls->counters[WLANTEST_TDLS_COUNTER_TEARDOWN]++;
 518                 tdls_verify_mic_teardown(tdls, 4, data, &elems);
 519         }
 520 }
 521
 522
 523 static void rx_data_tdls(struct wlantest *wt, const u8 *bssid,
 524                          const u8 *sta_addr, const u8 *dst, const u8 *src,
 525                          const u8 *data, size_t len)
 526 {
 527         /* data contains the payload of a TDLS Action frame */
 528         if (len < 2 || data[0] != WLAN_ACTION_TDLS) {
 529                 wpa_hexdump(MSG_DEBUG, "Unrecognized encapsulated TDLS frame",
 530                             data, len);
 531                 return;
 532         }
 533
 534         switch (data[1]) {
 535         case WLAN_TDLS_SETUP_REQUEST:
 536                 rx_data_tdls_setup_request(wt, bssid, sta_addr, dst, src,
 537                                            data + 2, len - 2);
 538                 break;
 539         case WLAN_TDLS_SETUP_RESPONSE:
 540                 rx_data_tdls_setup_response(wt, bssid, sta_addr, dst, src,
 541                                             data + 2, len - 2);
 542                 break;
 543         case WLAN_TDLS_SETUP_CONFIRM:
 544                 rx_data_tdls_setup_confirm(wt, bssid, sta_addr, dst, src,
 545                                            data + 2, len - 2);
 546                 break;
 547         case WLAN_TDLS_TEARDOWN:
 548                 rx_data_tdls_teardown(wt, bssid, sta_addr, dst, src, data + 2,
 549                                       len - 2);
 550                 break;
 551         case WLAN_TDLS_DISCOVERY_REQUEST:
 552                 wpa_printf(MSG_DEBUG, "TDLS Discovery Request " MACSTR " -> "
 553                            MACSTR, MAC2STR(src), MAC2STR(dst));
 554                 break;
 555         }
 556 }
 557
 558
 559 void rx_data_80211_encap(struct wlantest *wt, const u8 *bssid,
 560                          const u8 *sta_addr, const u8 *dst, const u8 *src,
 561                          const u8 *data, size_t len)
 562 {
 563         wpa_hexdump(MSG_EXCESSIVE, "802.11 data encap frame", data, len);
 564         if (len < 1)
 565                 return;
 566         if (data[0] == 0x02)
 567                 rx_data_tdls(wt, bssid, sta_addr, dst, src, data + 1, len - 1);
 568 }