drivers/staging/rtl8188eu/core/rtw_ieee80211.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  ******************************************************************************/
  15 #define _IEEE80211_C
  16
  17 #include <linux/ieee80211.h>
  18
  19 #include <drv_types.h>
  20 #include <osdep_intf.h>
  21 #include <ieee80211.h>
  22 #include <wifi.h>
  23 #include <osdep_service.h>
  24 #include <wlan_bssdef.h>
  25
  26 u8 RTW_WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
  27 u8 WPA_AUTH_KEY_MGMT_NONE[] = { 0x00, 0x50, 0xf2, 0 };
  28 u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x50, 0xf2, 1 };
  29 u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x50, 0xf2, 2 };
  30 u8 WPA_CIPHER_SUITE_NONE[] = { 0x00, 0x50, 0xf2, 0 };
  31 u8 WPA_CIPHER_SUITE_WEP40[] = { 0x00, 0x50, 0xf2, 1 };
  32 u8 WPA_CIPHER_SUITE_TKIP[] = { 0x00, 0x50, 0xf2, 2 };
  33 u8 WPA_CIPHER_SUITE_WRAP[] = { 0x00, 0x50, 0xf2, 3 };
  34 u8 WPA_CIPHER_SUITE_CCMP[] = { 0x00, 0x50, 0xf2, 4 };
  35 u8 WPA_CIPHER_SUITE_WEP104[] = { 0x00, 0x50, 0xf2, 5 };
  36
  37 u16 RSN_VERSION_BSD = 1;
  38 u8 RSN_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x0f, 0xac, 1 };
  39 u8 RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x0f, 0xac, 2 };
  40 u8 RSN_CIPHER_SUITE_NONE[] = { 0x00, 0x0f, 0xac, 0 };
  41 u8 RSN_CIPHER_SUITE_WEP40[] = { 0x00, 0x0f, 0xac, 1 };
  42 u8 RSN_CIPHER_SUITE_TKIP[] = { 0x00, 0x0f, 0xac, 2 };
  43 u8 RSN_CIPHER_SUITE_WRAP[] = { 0x00, 0x0f, 0xac, 3 };
  44 u8 RSN_CIPHER_SUITE_CCMP[] = { 0x00, 0x0f, 0xac, 4 };
  45 u8 RSN_CIPHER_SUITE_WEP104[] = { 0x00, 0x0f, 0xac, 5 };
  46 /*  */
  47 /*  for adhoc-master to generate ie and provide supported-rate to fw */
  48 /*  */
  49
  50 static u8       WIFI_CCKRATES[] = {
  51         (IEEE80211_CCK_RATE_1MB | IEEE80211_BASIC_RATE_MASK),
  52         (IEEE80211_CCK_RATE_2MB | IEEE80211_BASIC_RATE_MASK),
  53         (IEEE80211_CCK_RATE_5MB | IEEE80211_BASIC_RATE_MASK),
  54         (IEEE80211_CCK_RATE_11MB | IEEE80211_BASIC_RATE_MASK)
  55         };
  56
  57 static u8       WIFI_OFDMRATES[] = {
  58          (IEEE80211_OFDM_RATE_6MB),
  59          (IEEE80211_OFDM_RATE_9MB),
  60          (IEEE80211_OFDM_RATE_12MB),
  61          (IEEE80211_OFDM_RATE_18MB),
  62          (IEEE80211_OFDM_RATE_24MB),
  63          IEEE80211_OFDM_RATE_36MB,
  64          IEEE80211_OFDM_RATE_48MB,
  65          IEEE80211_OFDM_RATE_54MB
  66         };
  67
  68
  69 int rtw_get_bit_value_from_ieee_value(u8 val)
  70 {
  71         unsigned char dot11_rate_table[] = {
  72                 2, 4, 11, 22, 12, 18, 24, 36, 48,
  73                 72, 96, 108, 0}; /*  last element must be zero!! */
  74
  75         int i = 0;
  76         while (dot11_rate_table[i] != 0) {
  77                 if (dot11_rate_table[i] == val)
  78                         return BIT(i);
  79                 i++;
  80         }
  81         return 0;
  82 }
  83
  84 uint    rtw_is_cckrates_included(u8 *rate)
  85 {
  86         u32     i = 0;
  87
  88         while (rate[i] != 0) {
  89                 if  ((((rate[i]) & 0x7f) == 2) || (((rate[i]) & 0x7f) == 4) ||
  90                      (((rate[i]) & 0x7f) == 11)  || (((rate[i]) & 0x7f) == 22))
  91                         return true;
  92                 i++;
  93         }
  94         return false;
  95 }
  96
  97 uint    rtw_is_cckratesonly_included(u8 *rate)
  98 {
  99         u32 i = 0;
 100
 101         while (rate[i] != 0) {
 102                 if  ((((rate[i]) & 0x7f) != 2) && (((rate[i]) & 0x7f) != 4) &&
 103                      (((rate[i]) & 0x7f) != 11)  && (((rate[i]) & 0x7f) != 22))
 104                         return false;
 105                 i++;
 106         }
 107
 108         return true;
 109 }
 110
 111 int rtw_check_network_type(unsigned char *rate, int ratelen, int channel)
 112 {
 113         if (channel > 14) {
 114                 if ((rtw_is_cckrates_included(rate)) == true)
 115                         return WIRELESS_INVALID;
 116                 else
 117                         return WIRELESS_11A;
 118         } else {  /*  could be pure B, pure G, or B/G */
 119                 if ((rtw_is_cckratesonly_included(rate)) == true)
 120                         return WIRELESS_11B;
 121                 else if ((rtw_is_cckrates_included(rate)) == true)
 122                         return  WIRELESS_11BG;
 123                 else
 124                         return WIRELESS_11G;
 125         }
 126 }
 127
 128 u8 *rtw_set_fixed_ie(void *pbuf, unsigned int len, void *source,
 129                      unsigned int *frlen)
 130 {
 131         memcpy(pbuf, source, len);
 132         *frlen = *frlen + len;
 133         return ((u8 *)pbuf) + len;
 134 }
 135
 136 /*  rtw_set_ie will update frame length */
 137 u8 *rtw_set_ie
 138 (
 139         u8 *pbuf,
 140         int index,
 141         uint len,
 142         u8 *source,
 143         uint *frlen /* frame length */
 144 )
 145 {
 146         *pbuf = (u8)index;
 147
 148         *(pbuf + 1) = (u8)len;
 149
 150         if (len > 0)
 151                 memcpy((void *)(pbuf + 2), (void *)source, len);
 152
 153         *frlen = *frlen + (len + 2);
 154
 155         return pbuf + len + 2;
 156 }
 157
 158 /*----------------------------------------------------------------------------
 159 index: the information element id index, limit is the limit for search
 160 -----------------------------------------------------------------------------*/
 161 u8 *rtw_get_ie(u8 *pbuf, int index, int *len, int limit)
 162 {
 163         int tmp, i;
 164         u8 *p;
 165         if (limit < 1)
 166                 return NULL;
 167
 168         p = pbuf;
 169         i = 0;
 170         *len = 0;
 171         while (1) {
 172                 if (*p == index) {
 173                         *len = *(p + 1);
 174                         return p;
 175                 } else {
 176                         tmp = *(p + 1);
 177                         p += (tmp + 2);
 178                         i += (tmp + 2);
 179                 }
 180                 if (i >= limit)
 181                         break;
 182         }
 183         return NULL;
 184 }
 185
 186 void rtw_set_supported_rate(u8 *SupportedRates, uint mode)
 187 {
 188
 189         memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
 190
 191         switch (mode) {
 192         case WIRELESS_11B:
 193                 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
 194                 break;
 195         case WIRELESS_11G:
 196         case WIRELESS_11A:
 197         case WIRELESS_11_5N:
 198         case WIRELESS_11A_5N:/* Todo: no basic rate for ofdm ? */
 199                 memcpy(SupportedRates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
 200                 break;
 201         case WIRELESS_11BG:
 202         case WIRELESS_11G_24N:
 203         case WIRELESS_11_24N:
 204         case WIRELESS_11BG_24N:
 205                 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
 206                 memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
 207                 break;
 208         }
 209 }
 210
 211 uint    rtw_get_rateset_len(u8  *rateset)
 212 {
 213         uint i = 0;
 214         while (1) {
 215                 if ((rateset[i]) == 0)
 216                         break;
 217                 if (i > 12)
 218                         break;
 219                 i++;
 220         }
 221         return i;
 222 }
 223
 224 int rtw_generate_ie(struct registry_priv *pregistrypriv)
 225 {
 226         u8      wireless_mode;
 227         int     sz = 0, rateLen;
 228         struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
 229         u8 *ie = pdev_network->IEs;
 230
 231
 232         /* timestamp will be inserted by hardware */
 233         sz += 8;
 234         ie += sz;
 235
 236         /* beacon interval : 2bytes */
 237         *(__le16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);/* BCN_INTERVAL; */
 238         sz += 2;
 239         ie += 2;
 240
 241         /* capability info */
 242         *(u16 *)ie = 0;
 243
 244         *(__le16 *)ie |= cpu_to_le16(cap_IBSS);
 245
 246         if (pregistrypriv->preamble == PREAMBLE_SHORT)
 247                 *(__le16 *)ie |= cpu_to_le16(cap_ShortPremble);
 248
 249         if (pdev_network->Privacy)
 250                 *(__le16 *)ie |= cpu_to_le16(cap_Privacy);
 251
 252         sz += 2;
 253         ie += 2;
 254
 255         /* SSID */
 256         ie = rtw_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength, pdev_network->Ssid.Ssid, &sz);
 257
 258         /* supported rates */
 259         if (pregistrypriv->wireless_mode == WIRELESS_11ABGN) {
 260                 if (pdev_network->Configuration.DSConfig > 14)
 261                         wireless_mode = WIRELESS_11A_5N;
 262                 else
 263                         wireless_mode = WIRELESS_11BG_24N;
 264         } else {
 265                 wireless_mode = pregistrypriv->wireless_mode;
 266         }
 267
 268                 rtw_set_supported_rate(pdev_network->SupportedRates, wireless_mode);
 269
 270         rateLen = rtw_get_rateset_len(pdev_network->SupportedRates);
 271
 272         if (rateLen > 8) {
 273                 ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, 8, pdev_network->SupportedRates, &sz);
 274                 /* ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz); */
 275         } else {
 276                 ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, rateLen, pdev_network->SupportedRates, &sz);
 277         }
 278
 279         /* DS parameter set */
 280         ie = rtw_set_ie(ie, _DSSET_IE_, 1, (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
 281
 282         /* IBSS Parameter Set */
 283
 284         ie = rtw_set_ie(ie, _IBSS_PARA_IE_, 2, (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
 285
 286         if (rateLen > 8)
 287                 ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz);
 288
 289         return sz;
 290 }
 291
 292 unsigned char *rtw_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
 293 {
 294         int len;
 295         u16 val16;
 296         __le16 le_tmp;
 297         unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
 298         u8 *pbuf = pie;
 299         int limit_new = limit;
 300
 301         while (1) {
 302                 pbuf = rtw_get_ie(pbuf, _WPA_IE_ID_, &len, limit_new);
 303
 304                 if (pbuf) {
 305                         /* check if oui matches... */
 306                         if (!memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type)) == false)
 307                                 goto check_next_ie;
 308
 309                         /* check version... */
 310                         memcpy((u8 *)&le_tmp, (pbuf + 6), sizeof(val16));
 311
 312                         val16 = le16_to_cpu(le_tmp);
 313                         if (val16 != 0x0001)
 314                                 goto check_next_ie;
 315                         *wpa_ie_len = *(pbuf + 1);
 316                         return pbuf;
 317                 } else {
 318                         *wpa_ie_len = 0;
 319                         return NULL;
 320                 }
 321
 322 check_next_ie:
 323                 limit_new = limit - (pbuf - pie) - 2 - len;
 324                 if (limit_new <= 0)
 325                         break;
 326                 pbuf += (2 + len);
 327         }
 328         *wpa_ie_len = 0;
 329         return NULL;
 330 }
 331
 332 unsigned char *rtw_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
 333 {
 334
 335         return rtw_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
 336 }
 337
 338 int rtw_get_wpa_cipher_suite(u8 *s)
 339 {
 340         if (!memcmp(s, WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
 341                 return WPA_CIPHER_NONE;
 342         if (!memcmp(s, WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
 343                 return WPA_CIPHER_WEP40;
 344         if (!memcmp(s, WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
 345                 return WPA_CIPHER_TKIP;
 346         if (!memcmp(s, WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
 347                 return WPA_CIPHER_CCMP;
 348         if (!memcmp(s, WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
 349                 return WPA_CIPHER_WEP104;
 350
 351         return 0;
 352 }
 353
 354 int rtw_get_wpa2_cipher_suite(u8 *s)
 355 {
 356         if (!memcmp(s, RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
 357                 return WPA_CIPHER_NONE;
 358         if (!memcmp(s, RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
 359                 return WPA_CIPHER_WEP40;
 360         if (!memcmp(s, RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
 361                 return WPA_CIPHER_TKIP;
 362         if (!memcmp(s, RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
 363                 return WPA_CIPHER_CCMP;
 364         if (!memcmp(s, RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
 365                 return WPA_CIPHER_WEP104;
 366
 367         return 0;
 368 }
 369
 370
 371 int rtw_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
 372 {
 373         int i, ret = _SUCCESS;
 374         int left, count;
 375         u8 *pos;
 376         u8 SUITE_1X[4] = {0x00, 0x50, 0xf2, 1};
 377
 378         if (wpa_ie_len <= 0) {
 379                 /* No WPA IE - fail silently */
 380                 return _FAIL;
 381         }
 382
 383
 384         if ((*wpa_ie != _WPA_IE_ID_) || (*(wpa_ie + 1) != (u8)(wpa_ie_len - 2)) ||
 385             (memcmp(wpa_ie + 2, RTW_WPA_OUI_TYPE, WPA_SELECTOR_LEN)))
 386                 return _FAIL;
 387
 388         pos = wpa_ie;
 389
 390         pos += 8;
 391         left = wpa_ie_len - 8;
 392
 393
 394         /* group_cipher */
 395         if (left >= WPA_SELECTOR_LEN) {
 396                 *group_cipher = rtw_get_wpa_cipher_suite(pos);
 397                 pos += WPA_SELECTOR_LEN;
 398                 left -= WPA_SELECTOR_LEN;
 399         } else if (left > 0) {
 400                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
 401                 return _FAIL;
 402         }
 403
 404         /* pairwise_cipher */
 405         if (left >= 2) {
 406                 count = get_unaligned_le16(pos);
 407                 pos += 2;
 408                 left -= 2;
 409
 410                 if (count == 0 || left < count * WPA_SELECTOR_LEN) {
 411                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
 412                                                 "count %u left %u", __func__, count, left));
 413                         return _FAIL;
 414                 }
 415
 416                 for (i = 0; i < count; i++) {
 417                         *pairwise_cipher |= rtw_get_wpa_cipher_suite(pos);
 418
 419                         pos += WPA_SELECTOR_LEN;
 420                         left -= WPA_SELECTOR_LEN;
 421                 }
 422         } else if (left == 1) {
 423                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)",   __func__));
 424                 return _FAIL;
 425         }
 426
 427         if (is_8021x) {
 428                 if (left >= 6) {
 429                         pos += 2;
 430                         if (!memcmp(pos, SUITE_1X, 4)) {
 431                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s : there has 802.1x auth\n", __func__));
 432                                 *is_8021x = 1;
 433                         }
 434                 }
 435         }
 436
 437         return ret;
 438 }
 439
 440 int rtw_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
 441 {
 442         int i, ret = _SUCCESS;
 443         int left, count;
 444         u8 *pos;
 445         u8 SUITE_1X[4] = {0x00, 0x0f, 0xac, 0x01};
 446
 447         if (rsn_ie_len <= 0) {
 448                 /* No RSN IE - fail silently */
 449                 return _FAIL;
 450         }
 451
 452
 453         if ((*rsn_ie != _WPA2_IE_ID_) || (*(rsn_ie + 1) != (u8)(rsn_ie_len - 2)))
 454                 return _FAIL;
 455
 456         pos = rsn_ie;
 457         pos += 4;
 458         left = rsn_ie_len - 4;
 459
 460         /* group_cipher */
 461         if (left >= RSN_SELECTOR_LEN) {
 462                 *group_cipher = rtw_get_wpa2_cipher_suite(pos);
 463
 464                 pos += RSN_SELECTOR_LEN;
 465                 left -= RSN_SELECTOR_LEN;
 466
 467         } else if (left > 0) {
 468                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
 469                 return _FAIL;
 470         }
 471
 472         /* pairwise_cipher */
 473         if (left >= 2) {
 474                 count = get_unaligned_le16(pos);
 475                 pos += 2;
 476                 left -= 2;
 477
 478                 if (count == 0 || left < count * RSN_SELECTOR_LEN) {
 479                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
 480                                                  "count %u left %u", __func__, count, left));
 481                         return _FAIL;
 482                 }
 483
 484                 for (i = 0; i < count; i++) {
 485                         *pairwise_cipher |= rtw_get_wpa2_cipher_suite(pos);
 486
 487                         pos += RSN_SELECTOR_LEN;
 488                         left -= RSN_SELECTOR_LEN;
 489                 }
 490
 491         } else if (left == 1) {
 492                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)",  __func__));
 493
 494                 return _FAIL;
 495         }
 496
 497         if (is_8021x) {
 498                 if (left >= 6) {
 499                         pos += 2;
 500                         if (!memcmp(pos, SUITE_1X, 4)) {
 501                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s (): there has 802.1x auth\n", __func__));
 502                                 *is_8021x = 1;
 503                         }
 504                 }
 505         }
 506         return ret;
 507 }
 508
 509 int rtw_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len, u8 *wpa_ie, u16 *wpa_len)
 510 {
 511         u8 authmode, sec_idx, i;
 512         u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
 513         uint    cnt;
 514
 515
 516         /* Search required WPA or WPA2 IE and copy to sec_ie[] */
 517
 518         cnt = _TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_;
 519
 520         sec_idx = 0;
 521
 522         while (cnt < in_len) {
 523                 authmode = in_ie[cnt];
 524
 525                 if ((authmode == _WPA_IE_ID_) && (!memcmp(&in_ie[cnt + 2], &wpa_oui[0], 4))) {
 526                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
 527                                          ("\n rtw_get_wpa_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
 528                                          sec_idx, in_ie[cnt + 1] + 2));
 529
 530                                 if (wpa_ie) {
 531                                         memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
 532
 533                                         for (i = 0; i < (in_ie[cnt + 1] + 2); i += 8) {
 534                                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
 535                                                          ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
 536                                                          wpa_ie[i], wpa_ie[i + 1], wpa_ie[i + 2], wpa_ie[i + 3], wpa_ie[i + 4],
 537                                                          wpa_ie[i + 5], wpa_ie[i + 6], wpa_ie[i + 7]));
 538                                         }
 539                                 }
 540
 541                                 *wpa_len = in_ie[cnt + 1] + 2;
 542                                 cnt += in_ie[cnt + 1] + 2;  /* get next */
 543                 } else {
 544                         if (authmode == _WPA2_IE_ID_) {
 545                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
 546                                          ("\n get_rsn_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
 547                                          sec_idx, in_ie[cnt + 1] + 2));
 548
 549                                 if (rsn_ie) {
 550                                         memcpy(rsn_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
 551
 552                                         for (i = 0; i < (in_ie[cnt + 1] + 2); i += 8) {
 553                                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
 554                                                          ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
 555                                                          rsn_ie[i], rsn_ie[i + 1], rsn_ie[i + 2], rsn_ie[i + 3], rsn_ie[i + 4],
 556                                                          rsn_ie[i + 5], rsn_ie[i + 6], rsn_ie[i + 7]));
 557                                                 }
 558                                 }
 559
 560                                 *rsn_len = in_ie[cnt + 1] + 2;
 561                                 cnt += in_ie[cnt + 1] + 2;  /* get next */
 562                         } else {
 563                                 cnt += in_ie[cnt + 1] + 2;   /* get next */
 564                         }
 565                 }
 566         }
 567
 568
 569         return *rsn_len + *wpa_len;
 570 }
 571
 572 u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
 573 {
 574         u8 match = false;
 575         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 576
 577         if (ie_ptr == NULL)
 578                 return match;
 579
 580         eid = ie_ptr[0];
 581
 582         if ((eid == _WPA_IE_ID_) && (!memcmp(&ie_ptr[2], wps_oui, 4))) {
 583                 *wps_ielen = ie_ptr[1] + 2;
 584                 match = true;
 585         }
 586         return match;
 587 }
 588
 589 /**
 590  * rtw_get_wps_ie - Search WPS IE from a series of IEs
 591  * @in_ie: Address of IEs to search
 592  * @in_len: Length limit from in_ie
 593  * @wps_ie: If not NULL and WPS IE is found, WPS IE will be copied to the buf starting from wps_ie
 594  * @wps_ielen: If not NULL and WPS IE is found, will set to the length of the entire WPS IE
 595  *
 596  * Returns: The address of the WPS IE found, or NULL
 597  */
 598 u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
 599 {
 600         uint cnt;
 601         u8 *wpsie_ptr = NULL;
 602         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 603
 604         if (wps_ielen)
 605                 *wps_ielen = 0;
 606
 607         if (!in_ie || in_len <= 0)
 608                 return wpsie_ptr;
 609
 610         cnt = 0;
 611
 612         while (cnt < in_len) {
 613                 eid = in_ie[cnt];
 614
 615                 if ((eid == _WPA_IE_ID_) && (!memcmp(&in_ie[cnt + 2], wps_oui, 4))) {
 616                         wpsie_ptr = &in_ie[cnt];
 617
 618                         if (wps_ie)
 619                                 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
 620
 621                         if (wps_ielen)
 622                                 *wps_ielen = in_ie[cnt + 1] + 2;
 623
 624                         cnt += in_ie[cnt + 1] + 2;
 625
 626                         break;
 627                 } else {
 628                         cnt += in_ie[cnt + 1] + 2; /* goto next */
 629                 }
 630         }
 631         return wpsie_ptr;
 632 }
 633
 634 /**
 635  * rtw_get_wps_attr - Search a specific WPS attribute from a given WPS IE
 636  * @wps_ie: Address of WPS IE to search
 637  * @wps_ielen: Length limit from wps_ie
 638  * @target_attr_id: The attribute ID of WPS attribute to search
 639  * @buf_attr: If not NULL and the WPS attribute is found, WPS attribute will be copied to the buf starting from buf_attr
 640  * @len_attr: If not NULL and the WPS attribute is found, will set to the length of the entire WPS attribute
 641  *
 642  * Returns: the address of the specific WPS attribute found, or NULL
 643  */
 644 u8 *rtw_get_wps_attr(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_attr, u32 *len_attr)
 645 {
 646         u8 *attr_ptr = NULL;
 647         u8 *target_attr_ptr = NULL;
 648         u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
 649
 650         if (len_attr)
 651                 *len_attr = 0;
 652
 653         if ((wps_ie[0] != _VENDOR_SPECIFIC_IE_) ||
 654             (memcmp(wps_ie + 2, wps_oui, 4)))
 655                 return attr_ptr;
 656
 657         /*  6 = 1(Element ID) + 1(Length) + 4(WPS OUI) */
 658         attr_ptr = wps_ie + 6; /* goto first attr */
 659
 660         while (attr_ptr - wps_ie < wps_ielen) {
 661                 /*  4 = 2(Attribute ID) + 2(Length) */
 662                 u16 attr_id = get_unaligned_be16(attr_ptr);
 663                 u16 attr_data_len = get_unaligned_be16(attr_ptr + 2);
 664                 u16 attr_len = attr_data_len + 4;
 665
 666                 if (attr_id == target_attr_id) {
 667                         target_attr_ptr = attr_ptr;
 668                         if (buf_attr)
 669                                 memcpy(buf_attr, attr_ptr, attr_len);
 670                         if (len_attr)
 671                                 *len_attr = attr_len;
 672                         break;
 673                 } else {
 674                         attr_ptr += attr_len; /* goto next */
 675                 }
 676         }
 677         return target_attr_ptr;
 678 }
 679
 680 /**
 681  * rtw_get_wps_attr_content - Search a specific WPS attribute content from a given WPS IE
 682  * @wps_ie: Address of WPS IE to search
 683  * @wps_ielen: Length limit from wps_ie
 684  * @target_attr_id: The attribute ID of WPS attribute to search
 685  * @buf_content: If not NULL and the WPS attribute is found, WPS attribute content will be copied to the buf starting from buf_content
 686  * @len_content: If not NULL and the WPS attribute is found, will set to the length of the WPS attribute content
 687  *
 688  * Returns: the address of the specific WPS attribute content found, or NULL
 689  */
 690 u8 *rtw_get_wps_attr_content(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_content, uint *len_content)
 691 {
 692         u8 *attr_ptr;
 693         u32 attr_len;
 694
 695         if (len_content)
 696                 *len_content = 0;
 697
 698         attr_ptr = rtw_get_wps_attr(wps_ie, wps_ielen, target_attr_id, NULL, &attr_len);
 699
 700         if (attr_ptr && attr_len) {
 701                 if (buf_content)
 702                         memcpy(buf_content, attr_ptr + 4, attr_len - 4);
 703
 704                 if (len_content)
 705                         *len_content = attr_len - 4;
 706
 707                 return attr_ptr + 4;
 708         }
 709
 710         return NULL;
 711 }
 712
 713 static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
 714                                             struct rtw_ieee802_11_elems *elems,
 715                                             int show_errors)
 716 {
 717         unsigned int oui;
 718
 719         /* first 3 bytes in vendor specific information element are the IEEE
 720          * OUI of the vendor. The following byte is used a vendor specific
 721          * sub-type. */
 722         if (elen < 4) {
 723                 if (show_errors) {
 724                         DBG_88E("short vendor specific information element ignored (len=%lu)\n",
 725                                 (unsigned long)elen);
 726                 }
 727                 return -1;
 728         }
 729
 730         oui = RTW_GET_BE24(pos);
 731         switch (oui) {
 732         case OUI_MICROSOFT:
 733                 /* Microsoft/Wi-Fi information elements are further typed and
 734                  * subtyped */
 735                 switch (pos[3]) {
 736                 case 1:
 737                         /* Microsoft OUI (00:50:F2) with OUI Type 1:
 738                          * real WPA information element */
 739                         elems->wpa_ie = pos;
 740                         elems->wpa_ie_len = elen;
 741                         break;
 742                 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
 743                         if (elen < 5) {
 744                                 DBG_88E("short WME information element ignored (len=%lu)\n",
 745                                         (unsigned long)elen);
 746                                 return -1;
 747                         }
 748                         switch (pos[4]) {
 749                         case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
 750                         case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
 751                                 elems->wme = pos;
 752                                 elems->wme_len = elen;
 753                                 break;
 754                         case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
 755                                 elems->wme_tspec = pos;
 756                                 elems->wme_tspec_len = elen;
 757                                 break;
 758                         default:
 759                                 DBG_88E("unknown WME information element ignored (subtype=%d len=%lu)\n",
 760                                         pos[4], (unsigned long)elen);
 761                                 return -1;
 762                         }
 763                         break;
 764                 case 4:
 765                         /* Wi-Fi Protected Setup (WPS) IE */
 766                         elems->wps_ie = pos;
 767                         elems->wps_ie_len = elen;
 768                         break;
 769                 default:
 770                         DBG_88E("Unknown Microsoft information element ignored (type=%d len=%lu)\n",
 771                                 pos[3], (unsigned long)elen);
 772                         return -1;
 773                 }
 774                 break;
 775
 776         case OUI_BROADCOM:
 777                 switch (pos[3]) {
 778                 case VENDOR_HT_CAPAB_OUI_TYPE:
 779                         elems->vendor_ht_cap = pos;
 780                         elems->vendor_ht_cap_len = elen;
 781                         break;
 782                 default:
 783                         DBG_88E("Unknown Broadcom information element ignored (type=%d len=%lu)\n",
 784                                 pos[3], (unsigned long)elen);
 785                         return -1;
 786                 }
 787                 break;
 788         default:
 789                 DBG_88E("unknown vendor specific information element ignored (vendor OUI %3phC len=%lu)\n",
 790                         pos, (unsigned long)elen);
 791                 return -1;
 792         }
 793         return 0;
 794 }
 795
 796 /**
 797  * ieee802_11_parse_elems - Parse information elements in management frames
 798  * @start: Pointer to the start of IEs
 799  * @len: Length of IE buffer in octets
 800  * @elems: Data structure for parsed elements
 801  * @show_errors: Whether to show parsing errors in debug log
 802  * Returns: Parsing result
 803  */
 804 enum parse_res rtw_ieee802_11_parse_elems(u8 *start, uint len,
 805                                 struct rtw_ieee802_11_elems *elems,
 806                                 int show_errors)
 807 {
 808         uint left = len;
 809         u8 *pos = start;
 810         int unknown = 0;
 811
 812         memset(elems, 0, sizeof(*elems));
 813
 814         while (left >= 2) {
 815                 u8 id, elen;
 816
 817                 id = *pos++;
 818                 elen = *pos++;
 819                 left -= 2;
 820
 821                 if (elen > left) {
 822                         if (show_errors) {
 823                                 DBG_88E("IEEE 802.11 element parse failed (id=%d elen=%d left=%lu)\n",
 824                                         id, elen, (unsigned long)left);
 825                         }
 826                         return ParseFailed;
 827                 }
 828
 829                 switch (id) {
 830                 case WLAN_EID_SSID:
 831                         elems->ssid = pos;
 832                         elems->ssid_len = elen;
 833                         break;
 834                 case WLAN_EID_SUPP_RATES:
 835                         elems->supp_rates = pos;
 836                         elems->supp_rates_len = elen;
 837                         break;
 838                 case WLAN_EID_FH_PARAMS:
 839                         elems->fh_params = pos;
 840                         elems->fh_params_len = elen;
 841                         break;
 842                 case WLAN_EID_DS_PARAMS:
 843                         elems->ds_params = pos;
 844                         elems->ds_params_len = elen;
 845                         break;
 846                 case WLAN_EID_CF_PARAMS:
 847                         elems->cf_params = pos;
 848                         elems->cf_params_len = elen;
 849                         break;
 850                 case WLAN_EID_TIM:
 851                         elems->tim = pos;
 852                         elems->tim_len = elen;
 853                         break;
 854                 case WLAN_EID_IBSS_PARAMS:
 855                         elems->ibss_params = pos;
 856                         elems->ibss_params_len = elen;
 857                         break;
 858                 case WLAN_EID_CHALLENGE:
 859                         elems->challenge = pos;
 860                         elems->challenge_len = elen;
 861                         break;
 862                 case WLAN_EID_ERP_INFO:
 863                         elems->erp_info = pos;
 864                         elems->erp_info_len = elen;
 865                         break;
 866                 case WLAN_EID_EXT_SUPP_RATES:
 867                         elems->ext_supp_rates = pos;
 868                         elems->ext_supp_rates_len = elen;
 869                         break;
 870                 case WLAN_EID_VENDOR_SPECIFIC:
 871                         if (rtw_ieee802_11_parse_vendor_specific(pos, elen, elems, show_errors))
 872                                 unknown++;
 873                         break;
 874                 case WLAN_EID_RSN:
 875                         elems->rsn_ie = pos;
 876                         elems->rsn_ie_len = elen;
 877                         break;
 878                 case WLAN_EID_PWR_CAPABILITY:
 879                         elems->power_cap = pos;
 880                         elems->power_cap_len = elen;
 881                         break;
 882                 case WLAN_EID_SUPPORTED_CHANNELS:
 883                         elems->supp_channels = pos;
 884                         elems->supp_channels_len = elen;
 885                         break;
 886                 case WLAN_EID_MOBILITY_DOMAIN:
 887                         elems->mdie = pos;
 888                         elems->mdie_len = elen;
 889                         break;
 890                 case WLAN_EID_FAST_BSS_TRANSITION:
 891                         elems->ftie = pos;
 892                         elems->ftie_len = elen;
 893                         break;
 894                 case WLAN_EID_TIMEOUT_INTERVAL:
 895                         elems->timeout_int = pos;
 896                         elems->timeout_int_len = elen;
 897                         break;
 898                 case WLAN_EID_HT_CAPABILITY:
 899                         elems->ht_capabilities = pos;
 900                         elems->ht_capabilities_len = elen;
 901                         break;
 902                 case WLAN_EID_HT_OPERATION:
 903                         elems->ht_operation = pos;
 904                         elems->ht_operation_len = elen;
 905                         break;
 906                 default:
 907                         unknown++;
 908                         if (!show_errors)
 909                                 break;
 910                         DBG_88E("IEEE 802.11 element parse ignored unknown element (id=%d elen=%d)\n",
 911                                 id, elen);
 912                         break;
 913                 }
 914                 left -= elen;
 915                 pos += elen;
 916         }
 917         if (left)
 918                 return ParseFailed;
 919         return unknown ? ParseUnknown : ParseOK;
 920 }
 921
 922 void rtw_macaddr_cfg(u8 *mac_addr)
 923 {
 924         u8 mac[ETH_ALEN];
 925
 926         if (mac_addr == NULL)
 927                 return;
 928
 929         if (rtw_initmac && mac_pton(rtw_initmac, mac)) {
 930                 /* Users specify the mac address */
 931                 memcpy(mac_addr, mac, ETH_ALEN);
 932         } else {
 933                 /* Use the mac address stored in the Efuse */
 934                 memcpy(mac, mac_addr, ETH_ALEN);
 935         }
 936
 937         if (((mac[0] == 0xff) && (mac[1] == 0xff) && (mac[2] == 0xff) &&
 938              (mac[3] == 0xff) && (mac[4] == 0xff) && (mac[5] == 0xff)) ||
 939             ((mac[0] == 0x0) && (mac[1] == 0x0) && (mac[2] == 0x0) &&
 940              (mac[3] == 0x0) && (mac[4] == 0x0) && (mac[5] == 0x0))) {
 941                 mac[0] = 0x00;
 942                 mac[1] = 0xe0;
 943                 mac[2] = 0x4c;
 944                 mac[3] = 0x87;
 945                 mac[4] = 0x00;
 946                 mac[5] = 0x00;
 947                 /*  use default mac address */
 948                 memcpy(mac_addr, mac, ETH_ALEN);
 949                 DBG_88E("MAC Address from efuse error, assign default one !!!\n");
 950         }
 951
 952         DBG_88E("rtw_macaddr_cfg MAC Address  = %pM\n", (mac_addr));
 953 }
 954
 955 /* Baron adds to avoid FreeBSD warning */
 956 int ieee80211_is_empty_essid(const char *essid, int essid_len)
 957 {
 958         /* Single white space is for Linksys APs */
 959         if (essid_len == 1 && essid[0] == ' ')
 960                 return 1;
 961
 962         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 963         while (essid_len) {
 964                 essid_len--;
 965                 if (essid[essid_len] != '\0')
 966                         return 0;
 967         }
 968
 969         return 1;
 970 }
 971
 972 int ieee80211_get_hdrlen(u16 fc)
 973 {
 974         int hdrlen = 24;
 975
 976         switch (WLAN_FC_GET_TYPE(fc)) {
 977         case RTW_IEEE80211_FTYPE_DATA:
 978                 if (fc & RTW_IEEE80211_STYPE_QOS_DATA)
 979                         hdrlen += 2;
 980                 if ((fc & RTW_IEEE80211_FCTL_FROMDS) && (fc & RTW_IEEE80211_FCTL_TODS))
 981                         hdrlen += 6; /* Addr4 */
 982                 break;
 983         case RTW_IEEE80211_FTYPE_CTL:
 984                 switch (WLAN_FC_GET_STYPE(fc)) {
 985                 case RTW_IEEE80211_STYPE_CTS:
 986                 case RTW_IEEE80211_STYPE_ACK:
 987                         hdrlen = 10;
 988                         break;
 989                 default:
 990                         hdrlen = 16;
 991                         break;
 992                 }
 993                 break;
 994         }
 995
 996         return hdrlen;
 997 }
 998
 999 static int rtw_get_cipher_info(struct wlan_network *pnetwork)
1000 {
1001         u32 wpa_ielen;
1002         unsigned char *pbuf;
1003         int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
1004         int ret = _FAIL;
1005         pbuf = rtw_get_wpa_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength - 12);
1006
1007         if (pbuf && (wpa_ielen > 0)) {
1008                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_cipher_info: wpa_ielen: %d", wpa_ielen));
1009                 if (_SUCCESS == rtw_parse_wpa_ie(pbuf, wpa_ielen + 2, &group_cipher, &pairwise_cipher, &is8021x)) {
1010                         pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1011                         pnetwork->BcnInfo.group_cipher = group_cipher;
1012                         pnetwork->BcnInfo.is_8021x = is8021x;
1013                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d, is_8021x is %d",
1014                                  __func__, pnetwork->BcnInfo.pairwise_cipher, pnetwork->BcnInfo.is_8021x));
1015                         ret = _SUCCESS;
1016                 }
1017         } else {
1018                 pbuf = rtw_get_wpa2_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength - 12);
1019
1020                 if (pbuf && (wpa_ielen > 0)) {
1021                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE\n"));
1022                         if (_SUCCESS == rtw_parse_wpa2_ie(pbuf, wpa_ielen + 2, &group_cipher, &pairwise_cipher, &is8021x)) {
1023                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE  OK!!!\n"));
1024                                 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1025                                 pnetwork->BcnInfo.group_cipher = group_cipher;
1026                                 pnetwork->BcnInfo.is_8021x = is8021x;
1027                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d,"
1028                                                         "pnetwork->group_cipher is %d, is_8021x is %d", __func__, pnetwork->BcnInfo.pairwise_cipher,
1029                                                         pnetwork->BcnInfo.group_cipher, pnetwork->BcnInfo.is_8021x));
1030                                 ret = _SUCCESS;
1031                         }
1032                 }
1033         }
1034
1035         return ret;
1036 }
1037
1038 void rtw_get_bcn_info(struct wlan_network *pnetwork)
1039 {
1040         unsigned short cap = 0;
1041         u8 bencrypt = 0;
1042         __le16 le_tmp;
1043         u16 wpa_len = 0, rsn_len = 0;
1044         struct HT_info_element *pht_info = NULL;
1045         unsigned int            len;
1046         unsigned char           *p;
1047
1048         memcpy(&le_tmp, rtw_get_capability_from_ie(pnetwork->network.IEs), 2);
1049         cap = le16_to_cpu(le_tmp);
1050         if (cap & WLAN_CAPABILITY_PRIVACY) {
1051                 bencrypt = 1;
1052                 pnetwork->network.Privacy = 1;
1053         } else {
1054                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
1055         }
1056         rtw_get_sec_ie(pnetwork->network.IEs, pnetwork->network.IELength, NULL, &rsn_len, NULL, &wpa_len);
1057         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
1058         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_len));
1059         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
1060         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_len));
1061
1062         if (rsn_len > 0) {
1063                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
1064         } else if (wpa_len > 0) {
1065                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
1066         } else {
1067                 if (bencrypt)
1068                         pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
1069         }
1070         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
1071                  pnetwork->BcnInfo.encryp_protocol));
1072         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
1073                  pnetwork->BcnInfo.encryp_protocol));
1074         rtw_get_cipher_info(pnetwork);
1075
1076         /* get bwmode and ch_offset */
1077         /* parsing HT_CAP_IE */
1078         p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_CAPABILITY_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1079         if (p && len > 0) {
1080                 struct ieee80211_ht_cap *ht_cap =
1081                         (struct ieee80211_ht_cap *)(p + 2);
1082
1083                 pnetwork->BcnInfo.ht_cap_info = le16_to_cpu(ht_cap->cap_info);
1084         } else {
1085                 pnetwork->BcnInfo.ht_cap_info = 0;
1086         }
1087         /* parsing HT_INFO_IE */
1088         p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_ADD_INFO_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1089         if (p && len > 0) {
1090                         pht_info = (struct HT_info_element *)(p + 2);
1091                         pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
1092         } else {
1093                         pnetwork->BcnInfo.ht_info_infos_0 = 0;
1094         }
1095 }
1096
1097 /* show MCS rate, unit: 100Kbps */
1098 u16 rtw_mcs_rate(u8 rf_type, u8 bw_40MHz, u8 short_GI_20, u8 short_GI_40, unsigned char *MCS_rate)
1099 {
1100         u16 max_rate = 0;
1101
1102         if (rf_type == RF_1T1R) {
1103                 if (MCS_rate[0] & BIT(7))
1104                         max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
1105                 else if (MCS_rate[0] & BIT(6))
1106                         max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
1107                 else if (MCS_rate[0] & BIT(5))
1108                         max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1109                 else if (MCS_rate[0] & BIT(4))
1110                         max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1111                 else if (MCS_rate[0] & BIT(3))
1112                         max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1113                 else if (MCS_rate[0] & BIT(2))
1114                         max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
1115                 else if (MCS_rate[0] & BIT(1))
1116                         max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1117                 else if (MCS_rate[0] & BIT(0))
1118                         max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
1119         } else {
1120                 if (MCS_rate[1]) {
1121                         if (MCS_rate[1] & BIT(7))
1122                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 3000 : 2700) : ((short_GI_20) ? 1444 : 1300);
1123                         else if (MCS_rate[1] & BIT(6))
1124                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 2700 : 2430) : ((short_GI_20) ? 1300 : 1170);
1125                         else if (MCS_rate[1] & BIT(5))
1126                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 2400 : 2160) : ((short_GI_20) ? 1156 : 1040);
1127                         else if (MCS_rate[1] & BIT(4))
1128                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1800 : 1620) : ((short_GI_20) ? 867 : 780);
1129                         else if (MCS_rate[1] & BIT(3))
1130                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1131                         else if (MCS_rate[1] & BIT(2))
1132                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1133                         else if (MCS_rate[1] & BIT(1))
1134                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1135                         else if (MCS_rate[1] & BIT(0))
1136                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1137                 } else {
1138                         if (MCS_rate[0] & BIT(7))
1139                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
1140                         else if (MCS_rate[0] & BIT(6))
1141                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
1142                         else if (MCS_rate[0] & BIT(5))
1143                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1144                         else if (MCS_rate[0] & BIT(4))
1145                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1146                         else if (MCS_rate[0] & BIT(3))
1147                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1148                         else if (MCS_rate[0] & BIT(2))
1149                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
1150                         else if (MCS_rate[0] & BIT(1))
1151                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1152                         else if (MCS_rate[0] & BIT(0))
1153                                 max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
1154                 }
1155         }
1156         return max_rate;
1157 }