drivers/staging/rtl8723bs/core/rtw_ieee80211.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   5  *
   6  ******************************************************************************/
   7 #define _IEEE80211_C
   8
   9 #include <drv_types.h>
  10 #include <rtw_debug.h>
  11 #include <linux/of.h>
  12
  13 u8 RTW_WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
  14 u16 RTW_WPA_VERSION = 1;
  15 u8 WPA_AUTH_KEY_MGMT_NONE[] = { 0x00, 0x50, 0xf2, 0 };
  16 u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x50, 0xf2, 1 };
  17 u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x50, 0xf2, 2 };
  18 u8 WPA_CIPHER_SUITE_NONE[] = { 0x00, 0x50, 0xf2, 0 };
  19 u8 WPA_CIPHER_SUITE_WEP40[] = { 0x00, 0x50, 0xf2, 1 };
  20 u8 WPA_CIPHER_SUITE_TKIP[] = { 0x00, 0x50, 0xf2, 2 };
  21 u8 WPA_CIPHER_SUITE_WRAP[] = { 0x00, 0x50, 0xf2, 3 };
  22 u8 WPA_CIPHER_SUITE_CCMP[] = { 0x00, 0x50, 0xf2, 4 };
  23 u8 WPA_CIPHER_SUITE_WEP104[] = { 0x00, 0x50, 0xf2, 5 };
  24
  25 u16 RSN_VERSION_BSD = 1;
  26 u8 RSN_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x0f, 0xac, 1 };
  27 u8 RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x0f, 0xac, 2 };
  28 u8 RSN_CIPHER_SUITE_NONE[] = { 0x00, 0x0f, 0xac, 0 };
  29 u8 RSN_CIPHER_SUITE_WEP40[] = { 0x00, 0x0f, 0xac, 1 };
  30 u8 RSN_CIPHER_SUITE_TKIP[] = { 0x00, 0x0f, 0xac, 2 };
  31 u8 RSN_CIPHER_SUITE_WRAP[] = { 0x00, 0x0f, 0xac, 3 };
  32 u8 RSN_CIPHER_SUITE_CCMP[] = { 0x00, 0x0f, 0xac, 4 };
  33 u8 RSN_CIPHER_SUITE_WEP104[] = { 0x00, 0x0f, 0xac, 5 };
  34 /*  */
  35 /*  for adhoc-master to generate ie and provide supported-rate to fw */
  36 /*  */
  37
  38 static u8 WIFI_CCKRATES[] = {
  39                 (IEEE80211_CCK_RATE_1MB | IEEE80211_BASIC_RATE_MASK),
  40                 (IEEE80211_CCK_RATE_2MB | IEEE80211_BASIC_RATE_MASK),
  41                 (IEEE80211_CCK_RATE_5MB | IEEE80211_BASIC_RATE_MASK),
  42                 (IEEE80211_CCK_RATE_11MB | IEEE80211_BASIC_RATE_MASK)
  43 };
  44
  45 static u8 WIFI_OFDMRATES[] = {
  46                 (IEEE80211_OFDM_RATE_6MB),
  47                 (IEEE80211_OFDM_RATE_9MB),
  48                 (IEEE80211_OFDM_RATE_12MB),
  49                 (IEEE80211_OFDM_RATE_18MB),
  50                 (IEEE80211_OFDM_RATE_24MB),
  51                 IEEE80211_OFDM_RATE_36MB,
  52                 IEEE80211_OFDM_RATE_48MB,
  53                 IEEE80211_OFDM_RATE_54MB
  54 };
  55
  56 int rtw_get_bit_value_from_ieee_value(u8 val)
  57 {
  58         unsigned char dot11_rate_table[] = {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108, 0}; /*  last element must be zero!! */
  59         int i = 0;
  60
  61         while (dot11_rate_table[i] != 0) {
  62                 if (dot11_rate_table[i] == val)
  63                         return BIT(i);
  64                 i++;
  65         }
  66         return 0;
  67 }
  68
  69 bool rtw_is_cckrates_included(u8 *rate)
  70 {
  71         while (*rate) {
  72                 u8 r = *rate & 0x7f;
  73
  74                 if (r == 2 || r == 4 || r == 11 || r == 22)
  75                         return true;
  76                 rate++;
  77         }
  78
  79         return false;
  80 }
  81
  82 bool rtw_is_cckratesonly_included(u8 *rate)
  83 {
  84         while (*rate) {
  85                 u8 r = *rate & 0x7f;
  86
  87                 if (r != 2 && r != 4 && r != 11 && r != 22)
  88                         return false;
  89                 rate++;
  90         }
  91
  92         return true;
  93 }
  94
  95 int rtw_check_network_type(unsigned char *rate, int ratelen, int channel)
  96 {
  97         if (channel > 14) {
  98                 if (rtw_is_cckrates_included(rate))
  99                         return WIRELESS_INVALID;
 100                 else
 101                         return WIRELESS_11A;
 102         } else{ /*  could be pure B, pure G, or B/G */
 103                 if (rtw_is_cckratesonly_included(rate))
 104                         return WIRELESS_11B;
 105                 else if (rtw_is_cckrates_included(rate))
 106                         return  WIRELESS_11BG;
 107                 else
 108                         return WIRELESS_11G;
 109         }
 110 }
 111
 112 u8 *rtw_set_fixed_ie(unsigned char *pbuf, unsigned int len, unsigned char *source,
 113                                 unsigned int *frlen)
 114 {
 115         memcpy((void *)pbuf, (void *)source, len);
 116         *frlen = *frlen + len;
 117         return (pbuf + len);
 118 }
 119
 120 /*  rtw_set_ie will update frame length */
 121 u8 *rtw_set_ie
 122 (
 123         u8 *pbuf,
 124         sint index,
 125         uint len,
 126         u8 *source,
 127         uint *frlen /* frame length */
 128 )
 129 {
 130         *pbuf = (u8)index;
 131
 132         *(pbuf + 1) = (u8)len;
 133
 134         if (len > 0)
 135                 memcpy((void *)(pbuf + 2), (void *)source, len);
 136
 137         *frlen = *frlen + (len + 2);
 138
 139         return (pbuf + len + 2);
 140 }
 141
 142 /*----------------------------------------------------------------------------
 143 index: the information element id index, limit is the limit for search
 144 -----------------------------------------------------------------------------*/
 145 u8 *rtw_get_ie(u8 *pbuf, sint index, sint *len, sint limit)
 146 {
 147         sint tmp, i;
 148         u8 *p;
 149
 150         if (limit < 1)
 151                 return NULL;
 152
 153         p = pbuf;
 154         i = 0;
 155         *len = 0;
 156         while (1) {
 157                 if (*p == index) {
 158                         *len = *(p + 1);
 159                         return p;
 160                 } else{
 161                         tmp = *(p + 1);
 162                         p += (tmp + 2);
 163                         i += (tmp + 2);
 164                 }
 165                 if (i >= limit)
 166                         break;
 167         }
 168         return NULL;
 169 }
 170
 171 /**
 172  * rtw_get_ie_ex - Search specific IE from a series of IEs
 173  * @in_ie: Address of IEs to search
 174  * @in_len: Length limit from in_ie
 175  * @eid: Element ID to match
 176  * @oui: OUI to match
 177  * @oui_len: OUI length
 178  * @ie: If not NULL and the specific IE is found, the IE will be copied to the buf starting from the specific IE
 179  * @ielen: If not NULL and the specific IE is found, will set to the length of the entire IE
 180  *
 181  * Returns: The address of the specific IE found, or NULL
 182  */
 183 u8 *rtw_get_ie_ex(u8 *in_ie, uint in_len, u8 eid, u8 *oui, u8 oui_len, u8 *ie, uint *ielen)
 184 {
 185         uint cnt;
 186         u8 *target_ie = NULL;
 187
 188         if (ielen)
 189                 *ielen = 0;
 190
 191         if (!in_ie || in_len <= 0)
 192                 return target_ie;
 193
 194         cnt = 0;
 195
 196         while (cnt < in_len) {
 197                 if (eid == in_ie[cnt]
 198                         && (!oui || !memcmp(&in_ie[cnt+2], oui, oui_len))) {
 199                         target_ie = &in_ie[cnt];
 200
 201                         if (ie)
 202                                 memcpy(ie, &in_ie[cnt], in_ie[cnt+1]+2);
 203
 204                         if (ielen)
 205                                 *ielen = in_ie[cnt+1]+2;
 206
 207                         break;
 208                 } else{
 209                         cnt += in_ie[cnt+1]+2; /* goto next */
 210                 }
 211         }
 212
 213         return target_ie;
 214 }
 215
 216 /**
 217  * rtw_ies_remove_ie - Find matching IEs and remove
 218  * @ies: Address of IEs to search
 219  * @ies_len: Pointer of length of ies, will update to new length
 220  * @offset: The offset to start scarch
 221  * @eid: Element ID to match
 222  * @oui: OUI to match
 223  * @oui_len: OUI length
 224  *
 225  * Returns: _SUCCESS: ies is updated, _FAIL: not updated
 226  */
 227 int rtw_ies_remove_ie(u8 *ies, uint *ies_len, uint offset, u8 eid, u8 *oui, u8 oui_len)
 228 {
 229         int ret = _FAIL;
 230         u8 *target_ie;
 231         u32 target_ielen;
 232         u8 *start;
 233         uint search_len;
 234
 235         if (!ies || !ies_len || *ies_len <= offset)
 236                 goto exit;
 237
 238         start = ies + offset;
 239         search_len = *ies_len - offset;
 240
 241         while (1) {
 242                 target_ie = rtw_get_ie_ex(start, search_len, eid, oui, oui_len, NULL, &target_ielen);
 243                 if (target_ie && target_ielen) {
 244                         u8 buf[MAX_IE_SZ] = {0};
 245                         u8 *remain_ies = target_ie + target_ielen;
 246                         uint remain_len = search_len - (remain_ies - start);
 247
 248                         memcpy(buf, remain_ies, remain_len);
 249                         memcpy(target_ie, buf, remain_len);
 250                         *ies_len = *ies_len - target_ielen;
 251                         ret = _SUCCESS;
 252
 253                         start = target_ie;
 254                         search_len = remain_len;
 255                 } else {
 256                         break;
 257                 }
 258         }
 259 exit:
 260         return ret;
 261 }
 262
 263 void rtw_set_supported_rate(u8 *SupportedRates, uint mode)
 264 {
 265         memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
 266
 267         switch (mode) {
 268         case WIRELESS_11B:
 269                 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
 270                 break;
 271
 272         case WIRELESS_11G:
 273         case WIRELESS_11A:
 274         case WIRELESS_11_5N:
 275         case WIRELESS_11A_5N:/* Todo: no basic rate for ofdm ? */
 276         case WIRELESS_11_5AC:
 277                 memcpy(SupportedRates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
 278                 break;
 279
 280         case WIRELESS_11BG:
 281         case WIRELESS_11G_24N:
 282         case WIRELESS_11_24N:
 283         case WIRELESS_11BG_24N:
 284                 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
 285                 memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
 286                 break;
 287         }
 288 }
 289
 290 uint rtw_get_rateset_len(u8 *rateset)
 291 {
 292         uint i;
 293
 294         for (i = 0; i < 13; i++)
 295                 if (rateset[i] == 0)
 296                         break;
 297         return i;
 298 }
 299
 300 int rtw_generate_ie(struct registry_priv *pregistrypriv)
 301 {
 302         u8 wireless_mode;
 303         int     sz = 0, rateLen;
 304         struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
 305         u8 *ie = pdev_network->IEs;
 306
 307         /* timestamp will be inserted by hardware */
 308         sz += 8;
 309         ie += sz;
 310
 311         /* beacon interval : 2bytes */
 312         *(__le16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);/* BCN_INTERVAL; */
 313         sz += 2;
 314         ie += 2;
 315
 316         /* capability info */
 317         *(u16 *)ie = 0;
 318
 319         *(__le16 *)ie |= cpu_to_le16(cap_IBSS);
 320
 321         if (pregistrypriv->preamble == PREAMBLE_SHORT)
 322                 *(__le16 *)ie |= cpu_to_le16(cap_ShortPremble);
 323
 324         if (pdev_network->Privacy)
 325                 *(__le16 *)ie |= cpu_to_le16(cap_Privacy);
 326
 327         sz += 2;
 328         ie += 2;
 329
 330         /* SSID */
 331         ie = rtw_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength, pdev_network->Ssid.Ssid, &sz);
 332
 333         /* supported rates */
 334         if (pregistrypriv->wireless_mode == WIRELESS_11ABGN) {
 335                 if (pdev_network->Configuration.DSConfig > 14)
 336                         wireless_mode = WIRELESS_11A_5N;
 337                 else
 338                         wireless_mode = WIRELESS_11BG_24N;
 339         } else{
 340                 wireless_mode = pregistrypriv->wireless_mode;
 341         }
 342
 343         rtw_set_supported_rate(pdev_network->SupportedRates, wireless_mode);
 344
 345         rateLen = rtw_get_rateset_len(pdev_network->SupportedRates);
 346
 347         if (rateLen > 8) {
 348                 ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, 8, pdev_network->SupportedRates, &sz);
 349                 /* ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz); */
 350         } else{
 351                 ie = rtw_set_ie(ie, _SUPPORTEDRATES_IE_, rateLen, pdev_network->SupportedRates, &sz);
 352         }
 353
 354         /* DS parameter set */
 355         ie = rtw_set_ie(ie, _DSSET_IE_, 1, (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
 356
 357         /* IBSS Parameter Set */
 358
 359         ie = rtw_set_ie(ie, _IBSS_PARA_IE_, 2, (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
 360
 361         if (rateLen > 8) {
 362                 ie = rtw_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz);
 363         }
 364
 365         /* HT Cap. */
 366         if (((pregistrypriv->wireless_mode&WIRELESS_11_5N) || (pregistrypriv->wireless_mode&WIRELESS_11_24N))
 367                 && (pregistrypriv->ht_enable == true)) {
 368                 /* todo: */
 369         }
 370
 371         /* pdev_network->IELength =  sz; update IELength */
 372
 373         /* return _SUCCESS; */
 374
 375         return sz;
 376 }
 377
 378 unsigned char *rtw_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
 379 {
 380         int len;
 381         u16 val16;
 382         unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
 383         u8 *pbuf = pie;
 384         int limit_new = limit;
 385         __le16 le_tmp;
 386
 387         while (1) {
 388                 pbuf = rtw_get_ie(pbuf, _WPA_IE_ID_, &len, limit_new);
 389
 390                 if (pbuf) {
 391                         /* check if oui matches... */
 392                         if (memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type))) {
 393                                 goto check_next_ie;
 394                         }
 395
 396                         /* check version... */
 397                         memcpy((u8 *)&le_tmp, (pbuf + 6), sizeof(val16));
 398
 399                         val16 = le16_to_cpu(le_tmp);
 400                         if (val16 != 0x0001)
 401                                 goto check_next_ie;
 402
 403                         *wpa_ie_len = *(pbuf + 1);
 404
 405                         return pbuf;
 406
 407                 } else{
 408                         *wpa_ie_len = 0;
 409                         return NULL;
 410                 }
 411
 412 check_next_ie:
 413
 414                 limit_new = limit - (pbuf - pie) - 2 - len;
 415
 416                 if (limit_new <= 0)
 417                         break;
 418
 419                 pbuf += (2 + len);
 420         }
 421
 422         *wpa_ie_len = 0;
 423
 424         return NULL;
 425 }
 426
 427 unsigned char *rtw_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
 428 {
 429         return rtw_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
 430 }
 431
 432 int rtw_get_wpa_cipher_suite(u8 *s)
 433 {
 434         if (!memcmp(s, WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
 435                 return WPA_CIPHER_NONE;
 436         if (!memcmp(s, WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
 437                 return WPA_CIPHER_WEP40;
 438         if (!memcmp(s, WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
 439                 return WPA_CIPHER_TKIP;
 440         if (!memcmp(s, WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
 441                 return WPA_CIPHER_CCMP;
 442         if (!memcmp(s, WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
 443                 return WPA_CIPHER_WEP104;
 444
 445         return 0;
 446 }
 447
 448 int rtw_get_wpa2_cipher_suite(u8 *s)
 449 {
 450         if (!memcmp(s, RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
 451                 return WPA_CIPHER_NONE;
 452         if (!memcmp(s, RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
 453                 return WPA_CIPHER_WEP40;
 454         if (!memcmp(s, RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
 455                 return WPA_CIPHER_TKIP;
 456         if (!memcmp(s, RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
 457                 return WPA_CIPHER_CCMP;
 458         if (!memcmp(s, RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
 459                 return WPA_CIPHER_WEP104;
 460
 461         return 0;
 462 }
 463
 464 int rtw_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
 465 {
 466         int i, ret = _SUCCESS;
 467         int left, count;
 468         u8 *pos;
 469         u8 SUITE_1X[4] = {0x00, 0x50, 0xf2, 1};
 470
 471         if (wpa_ie_len <= 0) {
 472                 /* No WPA IE - fail silently */
 473                 return _FAIL;
 474         }
 475
 476         if ((*wpa_ie != _WPA_IE_ID_) || (*(wpa_ie+1) != (u8)(wpa_ie_len - 2)) ||
 477            (memcmp(wpa_ie+2, RTW_WPA_OUI_TYPE, WPA_SELECTOR_LEN))) {
 478                 return _FAIL;
 479         }
 480
 481         pos = wpa_ie;
 482
 483         pos += 8;
 484         left = wpa_ie_len - 8;
 485
 486         /* group_cipher */
 487         if (left >= WPA_SELECTOR_LEN) {
 488                 *group_cipher = rtw_get_wpa_cipher_suite(pos);
 489
 490                 pos += WPA_SELECTOR_LEN;
 491                 left -= WPA_SELECTOR_LEN;
 492
 493         } else if (left > 0) {
 494                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
 495
 496                 return _FAIL;
 497         }
 498
 499         /* pairwise_cipher */
 500         if (left >= 2) {
 501                 /* count = le16_to_cpu(*(u16*)pos); */
 502                 count = RTW_GET_LE16(pos);
 503                 pos += 2;
 504                 left -= 2;
 505
 506                 if (count == 0 || left < count * WPA_SELECTOR_LEN) {
 507                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
 508                                                 "count %u left %u", __func__, count, left));
 509                         return _FAIL;
 510                 }
 511
 512                 for (i = 0; i < count; i++) {
 513                         *pairwise_cipher |= rtw_get_wpa_cipher_suite(pos);
 514
 515                         pos += WPA_SELECTOR_LEN;
 516                         left -= WPA_SELECTOR_LEN;
 517                 }
 518
 519         } else if (left == 1) {
 520                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)",   __func__));
 521                 return _FAIL;
 522         }
 523
 524         if (is_8021x) {
 525                 if (left >= 6) {
 526                         pos += 2;
 527                         if (!memcmp(pos, SUITE_1X, 4)) {
 528                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s : there has 802.1x auth\n", __func__));
 529                                 *is_8021x = 1;
 530                         }
 531                 }
 532         }
 533
 534         return ret;
 535 }
 536
 537 int rtw_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
 538 {
 539         int i, ret = _SUCCESS;
 540         int left, count;
 541         u8 *pos;
 542         u8 SUITE_1X[4] = {0x00, 0x0f, 0xac, 0x01};
 543
 544         if (rsn_ie_len <= 0) {
 545                 /* No RSN IE - fail silently */
 546                 return _FAIL;
 547         }
 548
 549         if ((*rsn_ie != _WPA2_IE_ID_) || (*(rsn_ie+1) != (u8)(rsn_ie_len - 2))) {
 550                 return _FAIL;
 551         }
 552
 553         pos = rsn_ie;
 554         pos += 4;
 555         left = rsn_ie_len - 4;
 556
 557         /* group_cipher */
 558         if (left >= RSN_SELECTOR_LEN) {
 559                 *group_cipher = rtw_get_wpa2_cipher_suite(pos);
 560
 561                 pos += RSN_SELECTOR_LEN;
 562                 left -= RSN_SELECTOR_LEN;
 563
 564         } else if (left > 0) {
 565                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
 566                 return _FAIL;
 567         }
 568
 569         /* pairwise_cipher */
 570         if (left >= 2) {
 571           /* count = le16_to_cpu(*(u16*)pos); */
 572                 count = RTW_GET_LE16(pos);
 573                 pos += 2;
 574                 left -= 2;
 575
 576                 if (count == 0 || left < count * RSN_SELECTOR_LEN) {
 577                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), "
 578                                                  "count %u left %u", __func__, count, left));
 579                         return _FAIL;
 580                 }
 581
 582                 for (i = 0; i < count; i++) {
 583                         *pairwise_cipher |= rtw_get_wpa2_cipher_suite(pos);
 584
 585                         pos += RSN_SELECTOR_LEN;
 586                         left -= RSN_SELECTOR_LEN;
 587                 }
 588
 589         } else if (left == 1) {
 590                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)",  __func__));
 591
 592                 return _FAIL;
 593         }
 594
 595         if (is_8021x) {
 596                 if (left >= 6) {
 597                         pos += 2;
 598                         if (!memcmp(pos, SUITE_1X, 4)) {
 599                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s (): there has 802.1x auth\n", __func__));
 600                                 *is_8021x = 1;
 601                         }
 602                 }
 603         }
 604
 605         return ret;
 606 }
 607
 608 /* ifdef CONFIG_WAPI_SUPPORT */
 609 int rtw_get_wapi_ie(u8 *in_ie, uint in_len, u8 *wapi_ie, u16 *wapi_len)
 610 {
 611         int len = 0;
 612         u8 authmode, i;
 613         uint    cnt;
 614         u8 wapi_oui1[4] = {0x0, 0x14, 0x72, 0x01};
 615         u8 wapi_oui2[4] = {0x0, 0x14, 0x72, 0x02};
 616
 617         if (wapi_len)
 618                 *wapi_len = 0;
 619
 620         if (!in_ie || in_len <= 0)
 621                 return len;
 622
 623         cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
 624
 625         while (cnt < in_len) {
 626                 authmode = in_ie[cnt];
 627
 628                 /* if (authmode == _WAPI_IE_) */
 629                 if (authmode == _WAPI_IE_ && (!memcmp(&in_ie[cnt+6], wapi_oui1, 4) ||
 630                                         !memcmp(&in_ie[cnt+6], wapi_oui2, 4))) {
 631                         if (wapi_ie) {
 632                                 memcpy(wapi_ie, &in_ie[cnt], in_ie[cnt+1]+2);
 633
 634                                 for (i = 0; i < (in_ie[cnt+1]+2); i = i+8) {
 635                                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
 636                                                                 wapi_ie[i], wapi_ie[i+1], wapi_ie[i+2], wapi_ie[i+3], wapi_ie[i+4],
 637                                                                 wapi_ie[i+5], wapi_ie[i+6], wapi_ie[i+7]));
 638                                 }
 639                         }
 640
 641                         if (wapi_len)
 642                                 *wapi_len = in_ie[cnt+1]+2;
 643
 644                         cnt += in_ie[cnt+1]+2;  /* get next */
 645                 } else{
 646                         cnt += in_ie[cnt+1]+2;   /* get next */
 647                 }
 648         }
 649
 650         if (wapi_len)
 651                 len = *wapi_len;
 652
 653         return len;
 654 }
 655 /* endif */
 656
 657 int rtw_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len, u8 *wpa_ie, u16 *wpa_len)
 658 {
 659         u8 authmode, sec_idx, i;
 660         u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
 661         uint    cnt;
 662
 663         /* Search required WPA or WPA2 IE and copy to sec_ie[ ] */
 664
 665         cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
 666
 667         sec_idx = 0;
 668
 669         while (cnt < in_len) {
 670                 authmode = in_ie[cnt];
 671
 672                 if ((authmode == _WPA_IE_ID_) && (!memcmp(&in_ie[cnt+2], &wpa_oui[0], 4))) {
 673                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("\n rtw_get_wpa_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n", sec_idx, in_ie[cnt+1]+2));
 674
 675                                 if (wpa_ie) {
 676                                 memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt+1]+2);
 677
 678                                 for (i = 0; i < (in_ie[cnt+1]+2); i = i+8) {
 679                                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
 680                                                                         wpa_ie[i], wpa_ie[i+1], wpa_ie[i+2], wpa_ie[i+3], wpa_ie[i+4],
 681                                                                         wpa_ie[i+5], wpa_ie[i+6], wpa_ie[i+7]));
 682                                         }
 683                                 }
 684
 685                                 *wpa_len = in_ie[cnt+1]+2;
 686                                 cnt += in_ie[cnt+1]+2;  /* get next */
 687                 } else{
 688                         if (authmode == _WPA2_IE_ID_) {
 689                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("\n get_rsn_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n", sec_idx, in_ie[cnt+1]+2));
 690
 691                                 if (rsn_ie) {
 692                                 memcpy(rsn_ie, &in_ie[cnt], in_ie[cnt+1]+2);
 693
 694                                 for (i = 0; i < (in_ie[cnt+1]+2); i = i+8) {
 695                                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
 696                                                                         rsn_ie[i], rsn_ie[i+1], rsn_ie[i+2], rsn_ie[i+3], rsn_ie[i+4],
 697                                                                         rsn_ie[i+5], rsn_ie[i+6], rsn_ie[i+7]));
 698                                         }
 699                                 }
 700
 701                                 *rsn_len = in_ie[cnt+1]+2;
 702                                 cnt += in_ie[cnt+1]+2;  /* get next */
 703                         } else{
 704                                 cnt += in_ie[cnt+1]+2;   /* get next */
 705                         }
 706                 }
 707         }
 708
 709         return (*rsn_len + *wpa_len);
 710 }
 711
 712 u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
 713 {
 714         u8 match = false;
 715         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 716
 717         if (!ie_ptr)
 718                 return match;
 719
 720         eid = ie_ptr[0];
 721
 722         if ((eid == _WPA_IE_ID_) && (!memcmp(&ie_ptr[2], wps_oui, 4))) {
 723                 /* DBG_8192C("==> found WPS_IE.....\n"); */
 724                 *wps_ielen = ie_ptr[1]+2;
 725                 match = true;
 726         }
 727         return match;
 728 }
 729
 730 /**
 731  * rtw_get_wps_ie - Search WPS IE from a series of IEs
 732  * @in_ie: Address of IEs to search
 733  * @in_len: Length limit from in_ie
 734  * @wps_ie: If not NULL and WPS IE is found, WPS IE will be copied to the buf starting from wps_ie
 735  * @wps_ielen: If not NULL and WPS IE is found, will set to the length of the entire WPS IE
 736  *
 737  * Returns: The address of the WPS IE found, or NULL
 738  */
 739 u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
 740 {
 741         uint cnt;
 742         u8 *wpsie_ptr = NULL;
 743         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 744
 745         if (wps_ielen)
 746                 *wps_ielen = 0;
 747
 748         if (!in_ie || in_len <= 0)
 749                 return wpsie_ptr;
 750
 751         cnt = 0;
 752
 753         while (cnt < in_len) {
 754                 eid = in_ie[cnt];
 755
 756                 if ((eid == _WPA_IE_ID_) && (!memcmp(&in_ie[cnt+2], wps_oui, 4))) {
 757                         wpsie_ptr = &in_ie[cnt];
 758
 759                         if (wps_ie)
 760                                 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt+1]+2);
 761
 762                         if (wps_ielen)
 763                                 *wps_ielen = in_ie[cnt+1]+2;
 764
 765                         cnt += in_ie[cnt+1]+2;
 766
 767                         break;
 768                 } else{
 769                         cnt += in_ie[cnt+1]+2; /* goto next */
 770                 }
 771         }
 772
 773         return wpsie_ptr;
 774 }
 775
 776 /**
 777  * rtw_get_wps_attr - Search a specific WPS attribute from a given WPS IE
 778  * @wps_ie: Address of WPS IE to search
 779  * @wps_ielen: Length limit from wps_ie
 780  * @target_attr_id: The attribute ID of WPS attribute to search
 781  * @buf_attr: If not NULL and the WPS attribute is found, WPS attribute will be copied to the buf starting from buf_attr
 782  * @len_attr: If not NULL and the WPS attribute is found, will set to the length of the entire WPS attribute
 783  *
 784  * Returns: the address of the specific WPS attribute found, or NULL
 785  */
 786 u8 *rtw_get_wps_attr(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_attr, u32 *len_attr)
 787 {
 788         u8 *attr_ptr = NULL;
 789         u8 *target_attr_ptr = NULL;
 790         u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
 791
 792         if (len_attr)
 793                 *len_attr = 0;
 794
 795         if ((wps_ie[0] != _VENDOR_SPECIFIC_IE_) ||
 796                 (memcmp(wps_ie + 2, wps_oui, 4))) {
 797                 return attr_ptr;
 798         }
 799
 800         /*  6 = 1(Element ID) + 1(Length) + 4(WPS OUI) */
 801         attr_ptr = wps_ie + 6; /* goto first attr */
 802
 803         while (attr_ptr - wps_ie < wps_ielen) {
 804                 /*  4 = 2(Attribute ID) + 2(Length) */
 805                 u16 attr_id = RTW_GET_BE16(attr_ptr);
 806                 u16 attr_data_len = RTW_GET_BE16(attr_ptr + 2);
 807                 u16 attr_len = attr_data_len + 4;
 808
 809                 /* DBG_871X("%s attr_ptr:%p, id:%u, length:%u\n", __func__, attr_ptr, attr_id, attr_data_len); */
 810                 if (attr_id == target_attr_id) {
 811                         target_attr_ptr = attr_ptr;
 812
 813                         if (buf_attr)
 814                                 memcpy(buf_attr, attr_ptr, attr_len);
 815
 816                         if (len_attr)
 817                                 *len_attr = attr_len;
 818
 819                         break;
 820                 } else{
 821                         attr_ptr += attr_len; /* goto next */
 822                 }
 823         }
 824
 825         return target_attr_ptr;
 826 }
 827
 828 /**
 829  * rtw_get_wps_attr_content - Search a specific WPS attribute content from a given WPS IE
 830  * @wps_ie: Address of WPS IE to search
 831  * @wps_ielen: Length limit from wps_ie
 832  * @target_attr_id: The attribute ID of WPS attribute to search
 833  * @buf_content: If not NULL and the WPS attribute is found, WPS attribute content will be copied to the buf starting from buf_content
 834  * @len_content: If not NULL and the WPS attribute is found, will set to the length of the WPS attribute content
 835  *
 836  * Returns: the address of the specific WPS attribute content found, or NULL
 837  */
 838 u8 *rtw_get_wps_attr_content(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_content, uint *len_content)
 839 {
 840         u8 *attr_ptr;
 841         u32 attr_len;
 842
 843         if (len_content)
 844                 *len_content = 0;
 845
 846         attr_ptr = rtw_get_wps_attr(wps_ie, wps_ielen, target_attr_id, NULL, &attr_len);
 847
 848         if (attr_ptr && attr_len) {
 849                 if (buf_content)
 850                         memcpy(buf_content, attr_ptr+4, attr_len-4);
 851
 852                 if (len_content)
 853                         *len_content = attr_len-4;
 854
 855                 return attr_ptr+4;
 856         }
 857
 858         return NULL;
 859 }
 860
 861 static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
 862                                             struct rtw_ieee802_11_elems *elems,
 863                                             int show_errors)
 864 {
 865         unsigned int oui;
 866
 867         /* first 3 bytes in vendor specific information element are the IEEE
 868          * OUI of the vendor. The following byte is used a vendor specific
 869          * sub-type. */
 870         if (elen < 4) {
 871                 if (show_errors) {
 872                         DBG_871X("short vendor specific "
 873                                    "information element ignored (len =%lu)\n",
 874                                    (unsigned long) elen);
 875                 }
 876                 return -1;
 877         }
 878
 879         oui = RTW_GET_BE24(pos);
 880         switch (oui) {
 881         case OUI_MICROSOFT:
 882                 /* Microsoft/Wi-Fi information elements are further typed and
 883                  * subtyped */
 884                 switch (pos[3]) {
 885                 case 1:
 886                         /* Microsoft OUI (00:50:F2) with OUI Type 1:
 887                          * real WPA information element */
 888                         elems->wpa_ie = pos;
 889                         elems->wpa_ie_len = elen;
 890                         break;
 891                 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
 892                         if (elen < 5) {
 893                                 DBG_871X("short WME "
 894                                            "information element ignored "
 895                                            "(len =%lu)\n",
 896                                            (unsigned long) elen);
 897                                 return -1;
 898                         }
 899                         switch (pos[4]) {
 900                         case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
 901                         case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
 902                                 elems->wme = pos;
 903                                 elems->wme_len = elen;
 904                                 break;
 905                         case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
 906                                 elems->wme_tspec = pos;
 907                                 elems->wme_tspec_len = elen;
 908                                 break;
 909                         default:
 910                                 DBG_871X("unknown WME "
 911                                            "information element ignored "
 912                                            "(subtype =%d len =%lu)\n",
 913                                            pos[4], (unsigned long) elen);
 914                                 return -1;
 915                         }
 916                         break;
 917                 case 4:
 918                         /* Wi-Fi Protected Setup (WPS) IE */
 919                         elems->wps_ie = pos;
 920                         elems->wps_ie_len = elen;
 921                         break;
 922                 default:
 923                         DBG_871X("Unknown Microsoft "
 924                                    "information element ignored "
 925                                    "(type =%d len =%lu)\n",
 926                                    pos[3], (unsigned long) elen);
 927                         return -1;
 928                 }
 929                 break;
 930
 931         case OUI_BROADCOM:
 932                 switch (pos[3]) {
 933                 case VENDOR_HT_CAPAB_OUI_TYPE:
 934                         elems->vendor_ht_cap = pos;
 935                         elems->vendor_ht_cap_len = elen;
 936                         break;
 937                 default:
 938                         DBG_871X("Unknown Broadcom "
 939                                    "information element ignored "
 940                                    "(type =%d len =%lu)\n",
 941                                    pos[3], (unsigned long) elen);
 942                         return -1;
 943                 }
 944                 break;
 945
 946         default:
 947                 DBG_871X("unknown vendor specific information "
 948                            "element ignored (vendor OUI %02x:%02x:%02x "
 949                            "len =%lu)\n",
 950                            pos[0], pos[1], pos[2], (unsigned long) elen);
 951                 return -1;
 952         }
 953
 954         return 0;
 955 }
 956
 957 /**
 958  * ieee802_11_parse_elems - Parse information elements in management frames
 959  * @start: Pointer to the start of IEs
 960  * @len: Length of IE buffer in octets
 961  * @elems: Data structure for parsed elements
 962  * @show_errors: Whether to show parsing errors in debug log
 963  * Returns: Parsing result
 964  */
 965 ParseRes rtw_ieee802_11_parse_elems(u8 *start, uint len,
 966                                 struct rtw_ieee802_11_elems *elems,
 967                                 int show_errors)
 968 {
 969         uint left = len;
 970         u8 *pos = start;
 971         int unknown = 0;
 972
 973         memset(elems, 0, sizeof(*elems));
 974
 975         while (left >= 2) {
 976                 u8 id, elen;
 977
 978                 id = *pos++;
 979                 elen = *pos++;
 980                 left -= 2;
 981
 982                 if (elen > left) {
 983                         if (show_errors) {
 984                                 DBG_871X("IEEE 802.11 element "
 985                                            "parse failed (id =%d elen =%d "
 986                                            "left =%lu)\n",
 987                                            id, elen, (unsigned long) left);
 988                         }
 989                         return ParseFailed;
 990                 }
 991
 992                 switch (id) {
 993                 case WLAN_EID_SSID:
 994                         elems->ssid = pos;
 995                         elems->ssid_len = elen;
 996                         break;
 997                 case WLAN_EID_SUPP_RATES:
 998                         elems->supp_rates = pos;
 999                         elems->supp_rates_len = elen;
1000                         break;
1001                 case WLAN_EID_FH_PARAMS:
1002                         elems->fh_params = pos;
1003                         elems->fh_params_len = elen;
1004                         break;
1005                 case WLAN_EID_DS_PARAMS:
1006                         elems->ds_params = pos;
1007                         elems->ds_params_len = elen;
1008                         break;
1009                 case WLAN_EID_CF_PARAMS:
1010                         elems->cf_params = pos;
1011                         elems->cf_params_len = elen;
1012                         break;
1013                 case WLAN_EID_TIM:
1014                         elems->tim = pos;
1015                         elems->tim_len = elen;
1016                         break;
1017                 case WLAN_EID_IBSS_PARAMS:
1018                         elems->ibss_params = pos;
1019                         elems->ibss_params_len = elen;
1020                         break;
1021                 case WLAN_EID_CHALLENGE:
1022                         elems->challenge = pos;
1023                         elems->challenge_len = elen;
1024                         break;
1025                 case WLAN_EID_ERP_INFO:
1026                         elems->erp_info = pos;
1027                         elems->erp_info_len = elen;
1028                         break;
1029                 case WLAN_EID_EXT_SUPP_RATES:
1030                         elems->ext_supp_rates = pos;
1031                         elems->ext_supp_rates_len = elen;
1032                         break;
1033                 case WLAN_EID_VENDOR_SPECIFIC:
1034                         if (rtw_ieee802_11_parse_vendor_specific(pos, elen,
1035                                                              elems,
1036                                                              show_errors))
1037                                 unknown++;
1038                         break;
1039                 case WLAN_EID_RSN:
1040                         elems->rsn_ie = pos;
1041                         elems->rsn_ie_len = elen;
1042                         break;
1043                 case WLAN_EID_PWR_CAPABILITY:
1044                         elems->power_cap = pos;
1045                         elems->power_cap_len = elen;
1046                         break;
1047                 case WLAN_EID_SUPPORTED_CHANNELS:
1048                         elems->supp_channels = pos;
1049                         elems->supp_channels_len = elen;
1050                         break;
1051                 case WLAN_EID_MOBILITY_DOMAIN:
1052                         elems->mdie = pos;
1053                         elems->mdie_len = elen;
1054                         break;
1055                 case WLAN_EID_FAST_BSS_TRANSITION:
1056                         elems->ftie = pos;
1057                         elems->ftie_len = elen;
1058                         break;
1059                 case WLAN_EID_TIMEOUT_INTERVAL:
1060                         elems->timeout_int = pos;
1061                         elems->timeout_int_len = elen;
1062                         break;
1063                 case WLAN_EID_HT_CAP:
1064                         elems->ht_capabilities = pos;
1065                         elems->ht_capabilities_len = elen;
1066                         break;
1067                 case WLAN_EID_HT_OPERATION:
1068                         elems->ht_operation = pos;
1069                         elems->ht_operation_len = elen;
1070                         break;
1071                 case WLAN_EID_VHT_CAPABILITY:
1072                         elems->vht_capabilities = pos;
1073                         elems->vht_capabilities_len = elen;
1074                         break;
1075                 case WLAN_EID_VHT_OPERATION:
1076                         elems->vht_operation = pos;
1077                         elems->vht_operation_len = elen;
1078                         break;
1079                 case WLAN_EID_VHT_OP_MODE_NOTIFY:
1080                         elems->vht_op_mode_notify = pos;
1081                         elems->vht_op_mode_notify_len = elen;
1082                         break;
1083                 default:
1084                         unknown++;
1085                         if (!show_errors)
1086                                 break;
1087                         DBG_871X("IEEE 802.11 element parse "
1088                                    "ignored unknown element (id =%d elen =%d)\n",
1089                                    id, elen);
1090                         break;
1091                 }
1092
1093                 left -= elen;
1094                 pos += elen;
1095         }
1096
1097         if (left)
1098                 return ParseFailed;
1099
1100         return unknown ? ParseUnknown : ParseOK;
1101 }
1102
1103 void rtw_macaddr_cfg(struct device *dev, u8 *mac_addr)
1104 {
1105         u8 mac[ETH_ALEN];
1106         struct device_node *np = dev->of_node;
1107         const unsigned char *addr;
1108         int len;
1109
1110         if (!mac_addr)
1111                 return;
1112
1113         if (rtw_initmac && mac_pton(rtw_initmac, mac)) {
1114                 /* Users specify the mac address */
1115                 ether_addr_copy(mac_addr, mac);
1116         } else {
1117                 /* Use the mac address stored in the Efuse */
1118                 ether_addr_copy(mac, mac_addr);
1119         }
1120
1121         if (is_broadcast_ether_addr(mac) || is_zero_ether_addr(mac)) {
1122                 if ((addr = of_get_property(np, "local-mac-address", &len)) &&
1123                     len == ETH_ALEN) {
1124                         ether_addr_copy(mac_addr, addr);
1125                 } else {
1126                         eth_random_addr(mac_addr);
1127                         DBG_871X("MAC Address from efuse error, assign random one !!!\n");
1128                 }
1129         }
1130
1131         DBG_871X("rtw_macaddr_cfg MAC Address  = "MAC_FMT"\n", MAC_ARG(mac_addr));
1132 }
1133
1134 static int rtw_get_cipher_info(struct wlan_network *pnetwork)
1135 {
1136         u32 wpa_ielen;
1137         unsigned char *pbuf;
1138         int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
1139         int ret = _FAIL;
1140
1141         pbuf = rtw_get_wpa_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1142
1143         if (pbuf && (wpa_ielen > 0)) {
1144                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_cipher_info: wpa_ielen: %d", wpa_ielen));
1145                 if (_SUCCESS == rtw_parse_wpa_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1146                         pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1147                         pnetwork->BcnInfo.group_cipher = group_cipher;
1148                         pnetwork->BcnInfo.is_8021x = is8021x;
1149                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d, is_8021x is %d",
1150                                                 __func__, pnetwork->BcnInfo.pairwise_cipher, pnetwork->BcnInfo.is_8021x));
1151                         ret = _SUCCESS;
1152                 }
1153         } else {
1154                 pbuf = rtw_get_wpa2_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1155
1156                 if (pbuf && (wpa_ielen > 0)) {
1157                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE\n"));
1158                         if (_SUCCESS == rtw_parse_wpa2_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1159                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE  OK!!!\n"));
1160                                 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1161                                 pnetwork->BcnInfo.group_cipher = group_cipher;
1162                                 pnetwork->BcnInfo.is_8021x = is8021x;
1163                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d,"
1164                                                         "pnetwork->group_cipher is %d, is_8021x is %d", __func__, pnetwork->BcnInfo.pairwise_cipher,
1165                                                         pnetwork->BcnInfo.group_cipher, pnetwork->BcnInfo.is_8021x));
1166                                 ret = _SUCCESS;
1167                         }
1168                 }
1169         }
1170
1171         return ret;
1172 }
1173
1174 void rtw_get_bcn_info(struct wlan_network *pnetwork)
1175 {
1176         unsigned short cap = 0;
1177         u8 bencrypt = 0;
1178         /* u8 wpa_ie[255], rsn_ie[255]; */
1179         u16 wpa_len = 0, rsn_len = 0;
1180         struct HT_info_element *pht_info = NULL;
1181         struct ieee80211_ht_cap *pht_cap = NULL;
1182         unsigned int            len;
1183         unsigned char   *p;
1184         __le16 le_cap;
1185
1186         memcpy((u8 *)&le_cap, rtw_get_capability_from_ie(pnetwork->network.IEs), 2);
1187         cap = le16_to_cpu(le_cap);
1188         if (cap & WLAN_CAPABILITY_PRIVACY) {
1189                 bencrypt = 1;
1190                 pnetwork->network.Privacy = 1;
1191         } else {
1192                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
1193         }
1194         rtw_get_sec_ie(pnetwork->network.IEs, pnetwork->network.IELength, NULL, &rsn_len, NULL, &wpa_len);
1195         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
1196         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_len));
1197         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
1198         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_len));
1199
1200         if (rsn_len > 0) {
1201                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
1202         } else if (wpa_len > 0) {
1203                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
1204         } else {
1205                 if (bencrypt)
1206                         pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
1207         }
1208         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
1209                                 pnetwork->BcnInfo.encryp_protocol));
1210         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
1211                                 pnetwork->BcnInfo.encryp_protocol));
1212         rtw_get_cipher_info(pnetwork);
1213
1214         /* get bwmode and ch_offset */
1215         /* parsing HT_CAP_IE */
1216         p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_CAPABILITY_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1217         if (p && len > 0) {
1218                         pht_cap = (struct ieee80211_ht_cap *)(p + 2);
1219                         pnetwork->BcnInfo.ht_cap_info = le16_to_cpu(pht_cap->cap_info);
1220         } else {
1221                         pnetwork->BcnInfo.ht_cap_info = 0;
1222         }
1223         /* parsing HT_INFO_IE */
1224         p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_ADD_INFO_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1225         if (p && len > 0) {
1226                         pht_info = (struct HT_info_element *)(p + 2);
1227                         pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
1228         } else {
1229                         pnetwork->BcnInfo.ht_info_infos_0 = 0;
1230         }
1231 }
1232
1233 /* show MCS rate, unit: 100Kbps */
1234 u16 rtw_mcs_rate(u8 rf_type, u8 bw_40MHz, u8 short_GI, unsigned char *MCS_rate)
1235 {
1236         u16 max_rate = 0;
1237
1238         if (rf_type == RF_1T1R) {
1239                 if (MCS_rate[0] & BIT(7))
1240                         max_rate = (bw_40MHz) ? ((short_GI)?1500:1350):((short_GI)?722:650);
1241                 else if (MCS_rate[0] & BIT(6))
1242                         max_rate = (bw_40MHz) ? ((short_GI)?1350:1215):((short_GI)?650:585);
1243                 else if (MCS_rate[0] & BIT(5))
1244                         max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1245                 else if (MCS_rate[0] & BIT(4))
1246                         max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1247                 else if (MCS_rate[0] & BIT(3))
1248                         max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1249                 else if (MCS_rate[0] & BIT(2))
1250                         max_rate = (bw_40MHz) ? ((short_GI)?450:405):((short_GI)?217:195);
1251                 else if (MCS_rate[0] & BIT(1))
1252                         max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1253                 else if (MCS_rate[0] & BIT(0))
1254                         max_rate = (bw_40MHz) ? ((short_GI)?150:135):((short_GI)?72:65);
1255         } else{
1256                 if (MCS_rate[1]) {
1257                         if (MCS_rate[1] & BIT(7))
1258                                 max_rate = (bw_40MHz) ? ((short_GI)?3000:2700):((short_GI)?1444:1300);
1259                         else if (MCS_rate[1] & BIT(6))
1260                                 max_rate = (bw_40MHz) ? ((short_GI)?2700:2430):((short_GI)?1300:1170);
1261                         else if (MCS_rate[1] & BIT(5))
1262                                 max_rate = (bw_40MHz) ? ((short_GI)?2400:2160):((short_GI)?1156:1040);
1263                         else if (MCS_rate[1] & BIT(4))
1264                                 max_rate = (bw_40MHz) ? ((short_GI)?1800:1620):((short_GI)?867:780);
1265                         else if (MCS_rate[1] & BIT(3))
1266                                 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1267                         else if (MCS_rate[1] & BIT(2))
1268                                 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1269                         else if (MCS_rate[1] & BIT(1))
1270                                 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1271                         else if (MCS_rate[1] & BIT(0))
1272                                 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1273                 } else{
1274                         if (MCS_rate[0] & BIT(7))
1275                                 max_rate = (bw_40MHz) ? ((short_GI)?1500:1350):((short_GI)?722:650);
1276                         else if (MCS_rate[0] & BIT(6))
1277                                 max_rate = (bw_40MHz) ? ((short_GI)?1350:1215):((short_GI)?650:585);
1278                         else if (MCS_rate[0] & BIT(5))
1279                                 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1280                         else if (MCS_rate[0] & BIT(4))
1281                                 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1282                         else if (MCS_rate[0] & BIT(3))
1283                                 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1284                         else if (MCS_rate[0] & BIT(2))
1285                                 max_rate = (bw_40MHz) ? ((short_GI)?450:405):((short_GI)?217:195);
1286                         else if (MCS_rate[0] & BIT(1))
1287                                 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1288                         else if (MCS_rate[0] & BIT(0))
1289                                 max_rate = (bw_40MHz) ? ((short_GI)?150:135):((short_GI)?72:65);
1290                 }
1291         }
1292         return max_rate;
1293 }
1294
1295 int rtw_action_frame_parse(const u8 *frame, u32 frame_len, u8 *category, u8 *action)
1296 {
1297         const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr);
1298         u16 fc;
1299         u8 c;
1300         u8 a = ACT_PUBLIC_MAX;
1301
1302         fc = le16_to_cpu(((struct ieee80211_hdr_3addr *)frame)->frame_control);
1303
1304         if ((fc & (IEEE80211_FCTL_FTYPE|IEEE80211_FCTL_STYPE))
1305                 != (IEEE80211_FTYPE_MGMT|IEEE80211_STYPE_ACTION)
1306         ) {
1307                 return false;
1308         }
1309
1310         c = frame_body[0];
1311
1312         switch (c) {
1313         case RTW_WLAN_CATEGORY_P2P: /* vendor-specific */
1314                 break;
1315         default:
1316                 a = frame_body[1];
1317         }
1318
1319         if (category)
1320                 *category = c;
1321         if (action)
1322                 *action = a;
1323
1324         return true;
1325 }
1326
1327 static const char *_action_public_str[] = {
1328         "ACT_PUB_BSSCOEXIST",
1329         "ACT_PUB_DSE_ENABLE",
1330         "ACT_PUB_DSE_DEENABLE",
1331         "ACT_PUB_DSE_REG_LOCATION",
1332         "ACT_PUB_EXT_CHL_SWITCH",
1333         "ACT_PUB_DSE_MSR_REQ",
1334         "ACT_PUB_DSE_MSR_RPRT",
1335         "ACT_PUB_MP",
1336         "ACT_PUB_DSE_PWR_CONSTRAINT",
1337         "ACT_PUB_VENDOR",
1338         "ACT_PUB_GAS_INITIAL_REQ",
1339         "ACT_PUB_GAS_INITIAL_RSP",
1340         "ACT_PUB_GAS_COMEBACK_REQ",
1341         "ACT_PUB_GAS_COMEBACK_RSP",
1342         "ACT_PUB_TDLS_DISCOVERY_RSP",
1343         "ACT_PUB_LOCATION_TRACK",
1344         "ACT_PUB_RSVD",
1345 };
1346
1347 const char *action_public_str(u8 action)
1348 {
1349         action = (action >= ACT_PUBLIC_MAX) ? ACT_PUBLIC_MAX : action;
1350         return _action_public_str[action];
1351 }