wlantest/rx_data.c

   1 /*
   2  * Received Data frame processing
   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 #include <linux/if_ether.h>
  11
  12 #include "utils/common.h"
  13 #include "common/defs.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "wlantest.h"
  16
  17 extern int wpa_debug_level;
  18
  19
  20 static const char * data_stype(u16 stype)
  21 {
  22         switch (stype) {
  23         case WLAN_FC_STYPE_DATA:
  24                 return "DATA";
  25         case WLAN_FC_STYPE_DATA_CFACK:
  26                 return "DATA-CFACK";
  27         case WLAN_FC_STYPE_DATA_CFPOLL:
  28                 return "DATA-CFPOLL";
  29         case WLAN_FC_STYPE_DATA_CFACKPOLL:
  30                 return "DATA-CFACKPOLL";
  31         case WLAN_FC_STYPE_NULLFUNC:
  32                 return "NULLFUNC";
  33         case WLAN_FC_STYPE_CFACK:
  34                 return "CFACK";
  35         case WLAN_FC_STYPE_CFPOLL:
  36                 return "CFPOLL";
  37         case WLAN_FC_STYPE_CFACKPOLL:
  38                 return "CFACKPOLL";
  39         case WLAN_FC_STYPE_QOS_DATA:
  40                 return "QOSDATA";
  41         case WLAN_FC_STYPE_QOS_DATA_CFACK:
  42                 return "QOSDATA-CFACK";
  43         case WLAN_FC_STYPE_QOS_DATA_CFPOLL:
  44                 return "QOSDATA-CFPOLL";
  45         case WLAN_FC_STYPE_QOS_DATA_CFACKPOLL:
  46                 return "QOSDATA-CFACKPOLL";
  47         case WLAN_FC_STYPE_QOS_NULL:
  48                 return "QOS-NULL";
  49         case WLAN_FC_STYPE_QOS_CFPOLL:
  50                 return "QOS-CFPOLL";
  51         case WLAN_FC_STYPE_QOS_CFACKPOLL:
  52                 return "QOS-CFACKPOLL";
  53         }
  54         return "??";
  55 }
  56
  57
  58 static void rx_data_eth(struct wlantest *wt, const u8 *bssid,
  59                         const u8 *sta_addr, const u8 *dst, const u8 *src,
  60                         u16 ethertype, const u8 *data, size_t len, int prot,
  61                         const u8 *peer_addr)
  62 {
  63         switch (ethertype) {
  64         case ETH_P_PAE:
  65                 rx_data_eapol(wt, dst, src, data, len, prot);
  66                 break;
  67         case ETH_P_IP:
  68                 rx_data_ip(wt, bssid, sta_addr, dst, src, data, len,
  69                            peer_addr);
  70                 break;
  71         case 0x890d:
  72                 rx_data_80211_encap(wt, bssid, sta_addr, dst, src, data, len);
  73                 break;
  74         }
  75 }
  76
  77
  78 static void rx_data_process(struct wlantest *wt, const u8 *bssid,
  79                             const u8 *sta_addr,
  80                             const u8 *dst, const u8 *src,
  81                             const u8 *data, size_t len, int prot,
  82                             const u8 *peer_addr)
  83 {
  84         if (len == 0)
  85                 return;
  86
  87         if (len >= 8 && os_memcmp(data, "\xaa\xaa\x03\x00\x00\x00", 6) == 0) {
  88                 rx_data_eth(wt, bssid, sta_addr, dst, src,
  89                             WPA_GET_BE16(data + 6), data + 8, len - 8, prot,
  90                             peer_addr);
  91                 return;
  92         }
  93
  94         wpa_hexdump(MSG_DEBUG, "Unrecognized LLC", data, len > 8 ? 8 : len);
  95 }
  96
  97
  98 static u8 * try_all_ptk(struct wlantest *wt, int pairwise_cipher,
  99                         const struct ieee80211_hdr *hdr,
 100                         const u8 *data, size_t data_len, size_t *decrypted_len)
 101 {
 102         struct wlantest_ptk *ptk;
 103         u8 *decrypted;
 104         int prev_level = wpa_debug_level;
 105
 106         wpa_debug_level = MSG_WARNING;
 107         dl_list_for_each(ptk, &wt->ptk, struct wlantest_ptk, list) {
 108                 decrypted = NULL;
 109                 if ((pairwise_cipher == WPA_CIPHER_CCMP ||
 110                      pairwise_cipher == 0) && ptk->ptk_len == 48) {
 111                         decrypted = ccmp_decrypt(ptk->ptk.tk1, hdr, data,
 112                                                  data_len, decrypted_len);
 113                 }
 114                 if ((pairwise_cipher == WPA_CIPHER_TKIP ||
 115                      pairwise_cipher == 0) && ptk->ptk_len == 64) {
 116                         decrypted = tkip_decrypt(ptk->ptk.tk1, hdr, data,
 117                                                  data_len, decrypted_len);
 118                 }
 119                 if (decrypted) {
 120                         wpa_debug_level = prev_level;
 121                         add_note(wt, MSG_DEBUG, "Found PTK match from list of all known PTKs");
 122                         return decrypted;
 123                 }
 124         }
 125         wpa_debug_level = prev_level;
 126
 127         return NULL;
 128 }
 129
 130
 131 static void rx_data_bss_prot_group(struct wlantest *wt,
 132                                    const struct ieee80211_hdr *hdr,
 133                                    const u8 *qos, const u8 *dst, const u8 *src,
 134                                    const u8 *data, size_t len)
 135 {
 136         struct wlantest_bss *bss;
 137         int keyid;
 138         u8 *decrypted;
 139         size_t dlen;
 140         u8 pn[6];
 141
 142         bss = bss_get(wt, hdr->addr2);
 143         if (bss == NULL)
 144                 return;
 145         if (len < 4) {
 146                 add_note(wt, MSG_INFO, "Too short group addressed data frame");
 147                 return;
 148         }
 149
 150         if (bss->group_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) &&
 151             !(data[3] & 0x20)) {
 152                 add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from "
 153                          MACSTR " did not have ExtIV bit set to 1",
 154                          MAC2STR(bss->bssid));
 155                 return;
 156         }
 157
 158         if (bss->group_cipher == WPA_CIPHER_TKIP) {
 159                 if (data[3] & 0x1f) {
 160                         add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
 161                                  " used non-zero reserved bit",
 162                                  MAC2STR(bss->bssid));
 163                 }
 164                 if (data[1] != ((data[0] | 0x20) & 0x7f)) {
 165                         add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
 166                                  " used incorrect WEPSeed[1] (was 0x%x, "
 167                                  "expected 0x%x)",
 168                                  MAC2STR(bss->bssid), data[1],
 169                                  (data[0] | 0x20) & 0x7f);
 170                 }
 171         } else if (bss->group_cipher == WPA_CIPHER_CCMP) {
 172                 if (data[2] != 0 || (data[3] & 0x1f) != 0) {
 173                         add_note(wt, MSG_INFO, "CCMP frame from " MACSTR
 174                                  " used non-zero reserved bit",
 175                                  MAC2STR(bss->bssid));
 176                 }
 177         }
 178
 179         keyid = data[3] >> 6;
 180         if (bss->gtk_len[keyid] == 0 && bss->group_cipher != WPA_CIPHER_WEP40)
 181         {
 182                 add_note(wt, MSG_MSGDUMP, "No GTK known to decrypt the frame "
 183                          "(A2=" MACSTR " KeyID=%d)",
 184                          MAC2STR(hdr->addr2), keyid);
 185                 return;
 186         }
 187
 188         if (bss->group_cipher == WPA_CIPHER_TKIP)
 189                 tkip_get_pn(pn, data);
 190         else if (bss->group_cipher == WPA_CIPHER_WEP40)
 191                 goto skip_replay_det;
 192         else
 193                 ccmp_get_pn(pn, data);
 194         if (os_memcmp(pn, bss->rsc[keyid], 6) <= 0) {
 195                 u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
 196                 add_note(wt, MSG_INFO, "CCMP/TKIP replay detected: A1=" MACSTR
 197                          " A2=" MACSTR " A3=" MACSTR " seq=%u frag=%u",
 198                          MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
 199                          MAC2STR(hdr->addr3),
 200                          WLAN_GET_SEQ_SEQ(seq_ctrl),
 201                          WLAN_GET_SEQ_FRAG(seq_ctrl));
 202                 wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
 203                 wpa_hexdump(MSG_INFO, "RSC", bss->rsc[keyid], 6);
 204         }
 205
 206 skip_replay_det:
 207         if (bss->group_cipher == WPA_CIPHER_TKIP)
 208                 decrypted = tkip_decrypt(bss->gtk[keyid], hdr, data, len,
 209                                          &dlen);
 210         else if (bss->group_cipher == WPA_CIPHER_WEP40)
 211                 decrypted = wep_decrypt(wt, hdr, data, len, &dlen);
 212         else
 213                 decrypted = ccmp_decrypt(bss->gtk[keyid], hdr, data, len,
 214                                          &dlen);
 215         if (decrypted) {
 216                 rx_data_process(wt, bss->bssid, NULL, dst, src, decrypted,
 217                                 dlen, 1, NULL);
 218                 os_memcpy(bss->rsc[keyid], pn, 6);
 219                 write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
 220                                      decrypted, dlen);
 221         } else
 222                 add_note(wt, MSG_DEBUG, "Failed to decrypt frame");
 223         os_free(decrypted);
 224 }
 225
 226
 227 static void rx_data_bss_prot(struct wlantest *wt,
 228                              const struct ieee80211_hdr *hdr, const u8 *qos,
 229                              const u8 *dst, const u8 *src, const u8 *data,
 230                              size_t len)
 231 {
 232         struct wlantest_bss *bss;
 233         struct wlantest_sta *sta, *sta2;
 234         int keyid;
 235         u16 fc = le_to_host16(hdr->frame_control);
 236         u8 *decrypted;
 237         size_t dlen;
 238         int tid;
 239         u8 pn[6], *rsc;
 240         struct wlantest_tdls *tdls = NULL, *found;
 241         const u8 *tk = NULL;
 242         int ptk_iter_done = 0;
 243         int try_ptk_iter = 0;
 244
 245         if (hdr->addr1[0] & 0x01) {
 246                 rx_data_bss_prot_group(wt, hdr, qos, dst, src, data, len);
 247                 return;
 248         }
 249
 250         if (fc & WLAN_FC_TODS) {
 251                 bss = bss_get(wt, hdr->addr1);
 252                 if (bss == NULL)
 253                         return;
 254                 sta = sta_get(bss, hdr->addr2);
 255                 if (sta)
 256                         sta->counters[WLANTEST_STA_COUNTER_PROT_DATA_TX]++;
 257         } else if (fc & WLAN_FC_FROMDS) {
 258                 bss = bss_get(wt, hdr->addr2);
 259                 if (bss == NULL)
 260                         return;
 261                 sta = sta_get(bss, hdr->addr1);
 262         } else {
 263                 bss = bss_get(wt, hdr->addr3);
 264                 if (bss == NULL)
 265                         return;
 266                 sta = sta_find(bss, hdr->addr2);
 267                 sta2 = sta_find(bss, hdr->addr1);
 268                 if (sta == NULL || sta2 == NULL)
 269                         return;
 270                 found = NULL;
 271                 dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list)
 272                 {
 273                         if ((tdls->init == sta && tdls->resp == sta2) ||
 274                             (tdls->init == sta2 && tdls->resp == sta)) {
 275                                 found = tdls;
 276                                 if (tdls->link_up)
 277                                         break;
 278                         }
 279                 }
 280                 if (found) {
 281                         if (!found->link_up)
 282                                 add_note(wt, MSG_DEBUG,
 283                                          "TDLS: Link not up, but Data "
 284                                          "frame seen");
 285                         tk = found->tpk.tk;
 286                         tdls = found;
 287                 }
 288         }
 289         if ((sta == NULL ||
 290              (!sta->ptk_set && sta->pairwise_cipher != WPA_CIPHER_WEP40)) &&
 291             tk == NULL) {
 292                 add_note(wt, MSG_MSGDUMP, "No PTK known to decrypt the frame");
 293                 if (dl_list_empty(&wt->ptk))
 294                         return;
 295                 try_ptk_iter = 1;
 296         }
 297
 298         if (len < 4) {
 299                 add_note(wt, MSG_INFO, "Too short encrypted data frame");
 300                 return;
 301         }
 302
 303         if (sta->pairwise_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) &&
 304             !(data[3] & 0x20)) {
 305                 add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from "
 306                          MACSTR " did not have ExtIV bit set to 1",
 307                          MAC2STR(src));
 308                 return;
 309         }
 310
 311         if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP) {
 312                 if (data[3] & 0x1f) {
 313                         add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
 314                                  " used non-zero reserved bit",
 315                                  MAC2STR(hdr->addr2));
 316                 }
 317                 if (data[1] != ((data[0] | 0x20) & 0x7f)) {
 318                         add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
 319                                  " used incorrect WEPSeed[1] (was 0x%x, "
 320                                  "expected 0x%x)",
 321                                  MAC2STR(hdr->addr2), data[1],
 322                                  (data[0] | 0x20) & 0x7f);
 323                 }
 324         } else if (tk || sta->pairwise_cipher == WPA_CIPHER_CCMP) {
 325                 if (data[2] != 0 || (data[3] & 0x1f) != 0) {
 326                         add_note(wt, MSG_INFO, "CCMP frame from " MACSTR
 327                                  " used non-zero reserved bit",
 328                                  MAC2STR(hdr->addr2));
 329                 }
 330         }
 331
 332         keyid = data[3] >> 6;
 333         if (keyid != 0) {
 334                 add_note(wt, MSG_INFO, "Unexpected non-zero KeyID %d in "
 335                          "individually addressed Data frame from " MACSTR,
 336                          keyid, MAC2STR(hdr->addr2));
 337         }
 338
 339         if (qos)
 340                 tid = qos[0] & 0x0f;
 341         else
 342                 tid = 0;
 343         if (tk) {
 344                 if (os_memcmp(hdr->addr2, tdls->init->addr, ETH_ALEN) == 0)
 345                         rsc = tdls->rsc_init[tid];
 346                 else
 347                         rsc = tdls->rsc_resp[tid];
 348         } else if (fc & WLAN_FC_TODS)
 349                 rsc = sta->rsc_tods[tid];
 350         else
 351                 rsc = sta->rsc_fromds[tid];
 352
 353
 354         if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP)
 355                 tkip_get_pn(pn, data);
 356         else if (sta->pairwise_cipher == WPA_CIPHER_WEP40)
 357                 goto skip_replay_det;
 358         else
 359                 ccmp_get_pn(pn, data);
 360         if (os_memcmp(pn, rsc, 6) <= 0) {
 361                 u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
 362                 add_note(wt, MSG_INFO, "CCMP/TKIP replay detected: A1=" MACSTR
 363                          " A2=" MACSTR " A3=" MACSTR " seq=%u frag=%u",
 364                          MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
 365                          MAC2STR(hdr->addr3),
 366                          WLAN_GET_SEQ_SEQ(seq_ctrl),
 367                          WLAN_GET_SEQ_FRAG(seq_ctrl));
 368                 wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
 369                 wpa_hexdump(MSG_INFO, "RSC", rsc, 6);
 370         }
 371
 372 skip_replay_det:
 373         if (tk)
 374                 decrypted = ccmp_decrypt(tk, hdr, data, len, &dlen);
 375         else if (sta->pairwise_cipher == WPA_CIPHER_TKIP)
 376                 decrypted = tkip_decrypt(sta->ptk.tk1, hdr, data, len, &dlen);
 377         else if (sta->pairwise_cipher == WPA_CIPHER_WEP40)
 378                 decrypted = wep_decrypt(wt, hdr, data, len, &dlen);
 379         else if (sta->ptk_set)
 380                 decrypted = ccmp_decrypt(sta->ptk.tk1, hdr, data, len, &dlen);
 381         else {
 382                 decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, data,
 383                                         len, &dlen);
 384                 ptk_iter_done = 1;
 385         }
 386         if (!decrypted && !ptk_iter_done) {
 387                 decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, data,
 388                                         len, &dlen);
 389                 if (decrypted) {
 390                         add_note(wt, MSG_DEBUG, "Current PTK did not work, but found a match from all known PTKs");
 391                 }
 392         }
 393         if (decrypted) {
 394                 u16 fc = le_to_host16(hdr->frame_control);
 395                 const u8 *peer_addr = NULL;
 396                 if (!(fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)))
 397                         peer_addr = hdr->addr1;
 398                 os_memcpy(rsc, pn, 6);
 399                 rx_data_process(wt, bss->bssid, sta->addr, dst, src, decrypted,
 400                                 dlen, 1, peer_addr);
 401                 write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
 402                                      decrypted, dlen);
 403         } else if (!try_ptk_iter)
 404                 add_note(wt, MSG_DEBUG, "Failed to decrypt frame");
 405         os_free(decrypted);
 406 }
 407
 408
 409 static void rx_data_bss(struct wlantest *wt, const struct ieee80211_hdr *hdr,
 410                         const u8 *qos, const u8 *dst, const u8 *src,
 411                         const u8 *data, size_t len)
 412 {
 413         u16 fc = le_to_host16(hdr->frame_control);
 414         int prot = !!(fc & WLAN_FC_ISWEP);
 415
 416         if (qos) {
 417                 u8 ack = (qos[0] & 0x60) >> 5;
 418                 wpa_printf(MSG_MSGDUMP, "BSS DATA: " MACSTR " -> " MACSTR
 419                            " len=%u%s tid=%u%s%s",
 420                            MAC2STR(src), MAC2STR(dst), (unsigned int) len,
 421                            prot ? " Prot" : "", qos[0] & 0x0f,
 422                            (qos[0] & 0x10) ? " EOSP" : "",
 423                            ack == 0 ? "" :
 424                            (ack == 1 ? " NoAck" :
 425                             (ack == 2 ? " NoExpAck" : " BA")));
 426         } else {
 427                 wpa_printf(MSG_MSGDUMP, "BSS DATA: " MACSTR " -> " MACSTR
 428                            " len=%u%s",
 429                            MAC2STR(src), MAC2STR(dst), (unsigned int) len,
 430                            prot ? " Prot" : "");
 431         }
 432
 433         if (prot)
 434                 rx_data_bss_prot(wt, hdr, qos, dst, src, data, len);
 435         else {
 436                 const u8 *bssid, *sta_addr, *peer_addr;
 437                 if (fc & WLAN_FC_TODS) {
 438                         bssid = hdr->addr1;
 439                         sta_addr = hdr->addr2;
 440                         peer_addr = NULL;
 441                 } else if (fc & WLAN_FC_FROMDS) {
 442                         bssid = hdr->addr2;
 443                         sta_addr = hdr->addr1;
 444                         peer_addr = NULL;
 445                 } else {
 446                         bssid = hdr->addr3;
 447                         sta_addr = hdr->addr2;
 448                         peer_addr = hdr->addr1;
 449                 }
 450                 rx_data_process(wt, bssid, sta_addr, dst, src, data, len, 0,
 451                                 peer_addr);
 452         }
 453 }
 454
 455
 456 static struct wlantest_tdls * get_tdls(struct wlantest *wt, const u8 *bssid,
 457                                        const u8 *sta1_addr,
 458                                        const u8 *sta2_addr)
 459 {
 460         struct wlantest_bss *bss;
 461         struct wlantest_sta *sta1, *sta2;
 462         struct wlantest_tdls *tdls, *found = NULL;
 463
 464         bss = bss_find(wt, bssid);
 465         if (bss == NULL)
 466                 return NULL;
 467         sta1 = sta_find(bss, sta1_addr);
 468         if (sta1 == NULL)
 469                 return NULL;
 470         sta2 = sta_find(bss, sta2_addr);
 471         if (sta2 == NULL)
 472                 return NULL;
 473
 474         dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
 475                 if ((tdls->init == sta1 && tdls->resp == sta2) ||
 476                     (tdls->init == sta2 && tdls->resp == sta1)) {
 477                         found = tdls;
 478                         if (tdls->link_up)
 479                                 break;
 480                 }
 481         }
 482
 483         return found;
 484 }
 485
 486
 487 static void add_direct_link(struct wlantest *wt, const u8 *bssid,
 488                             const u8 *sta1_addr, const u8 *sta2_addr)
 489 {
 490         struct wlantest_tdls *tdls;
 491
 492         tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr);
 493         if (tdls == NULL)
 494                 return;
 495
 496         if (tdls->link_up)
 497                 tdls->counters[WLANTEST_TDLS_COUNTER_VALID_DIRECT_LINK]++;
 498         else
 499                 tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_DIRECT_LINK]++;
 500 }
 501
 502
 503 static void add_ap_path(struct wlantest *wt, const u8 *bssid,
 504                         const u8 *sta1_addr, const u8 *sta2_addr)
 505 {
 506         struct wlantest_tdls *tdls;
 507
 508         tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr);
 509         if (tdls == NULL)
 510                 return;
 511
 512         if (tdls->link_up)
 513                 tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_AP_PATH]++;
 514         else
 515                 tdls->counters[WLANTEST_TDLS_COUNTER_VALID_AP_PATH]++;
 516 }
 517
 518
 519 void rx_data(struct wlantest *wt, const u8 *data, size_t len)
 520 {
 521         const struct ieee80211_hdr *hdr;
 522         u16 fc, stype;
 523         size_t hdrlen;
 524         const u8 *qos = NULL;
 525
 526         if (len < 24)
 527                 return;
 528
 529         hdr = (const struct ieee80211_hdr *) data;
 530         fc = le_to_host16(hdr->frame_control);
 531         stype = WLAN_FC_GET_STYPE(fc);
 532         hdrlen = 24;
 533         if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
 534             (WLAN_FC_TODS | WLAN_FC_FROMDS))
 535                 hdrlen += ETH_ALEN;
 536         if (stype & 0x08) {
 537                 qos = data + hdrlen;
 538                 hdrlen += 2;
 539         }
 540         if (len < hdrlen)
 541                 return;
 542         wt->rx_data++;
 543
 544         switch (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
 545         case 0:
 546                 wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s IBSS DA=" MACSTR " SA="
 547                            MACSTR " BSSID=" MACSTR,
 548                            data_stype(WLAN_FC_GET_STYPE(fc)),
 549                            fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
 550                            fc & WLAN_FC_ISWEP ? " Prot" : "",
 551                            MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
 552                            MAC2STR(hdr->addr3));
 553                 add_direct_link(wt, hdr->addr3, hdr->addr1, hdr->addr2);
 554                 rx_data_bss(wt, hdr, qos, hdr->addr1, hdr->addr2,
 555                             data + hdrlen, len - hdrlen);
 556                 break;
 557         case WLAN_FC_FROMDS:
 558                 wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s FromDS DA=" MACSTR
 559                            " BSSID=" MACSTR " SA=" MACSTR,
 560                            data_stype(WLAN_FC_GET_STYPE(fc)),
 561                            fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
 562                            fc & WLAN_FC_ISWEP ? " Prot" : "",
 563                            MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
 564                            MAC2STR(hdr->addr3));
 565                 add_ap_path(wt, hdr->addr2, hdr->addr1, hdr->addr3);
 566                 rx_data_bss(wt, hdr, qos, hdr->addr1, hdr->addr3,
 567                             data + hdrlen, len - hdrlen);
 568                 break;
 569         case WLAN_FC_TODS:
 570                 wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s ToDS BSSID=" MACSTR
 571                            " SA=" MACSTR " DA=" MACSTR,
 572                            data_stype(WLAN_FC_GET_STYPE(fc)),
 573                            fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
 574                            fc & WLAN_FC_ISWEP ? " Prot" : "",
 575                            MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
 576                            MAC2STR(hdr->addr3));
 577                 add_ap_path(wt, hdr->addr1, hdr->addr3, hdr->addr2);
 578                 rx_data_bss(wt, hdr, qos, hdr->addr3, hdr->addr2,
 579                             data + hdrlen, len - hdrlen);
 580                 break;
 581         case WLAN_FC_TODS | WLAN_FC_FROMDS:
 582                 wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s WDS RA=" MACSTR " TA="
 583                            MACSTR " DA=" MACSTR " SA=" MACSTR,
 584                            data_stype(WLAN_FC_GET_STYPE(fc)),
 585                            fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
 586                            fc & WLAN_FC_ISWEP ? " Prot" : "",
 587                            MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
 588                            MAC2STR(hdr->addr3),
 589                            MAC2STR((const u8 *) (hdr + 1)));
 590                 break;
 591         }
 592 }