drivers/staging/rtl8723bs/core/rtw

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This source file includes following definitions.
rtw_get_bit_value_from_ieee_value
rtw_is_cckrates_included
rtw_is_cckratesonly_included
rtw_check_network_type
rtw_set_fixed_ie
rtw_get_ie
rtw_get_ie_ex
rtw_ies_remove_ie
rtw_set_supported_rate
rtw_get_rateset_len
rtw_generate_ie
rtw_get_wpa_ie
rtw_get_wpa2_ie
rtw_get_wpa_cipher_suite
rtw_get_wpa2_cipher_suite
rtw_parse_wpa_ie
rtw_parse_wpa2_ie
rtw_get_wapi_ie
rtw_get_sec_ie
rtw_is_wps_ie
rtw_get_wps_ie
rtw_get_wps_attr
rtw_get_wps_attr_content
rtw_ieee802_11_parse_vendor_specific
rtw_ieee802_11_parse_elems
rtw_macaddr_cfg
rtw_get_cipher_info
rtw_get_bcn_info
rtw_mcs_rate
rtw_action_frame_parse
action_public_str
   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 void 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 
 710 u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
 711 {
 712         u8 match = false;
 713         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 714 
 715         if (!ie_ptr)
 716                 return match;
 717 
 718         eid = ie_ptr[0];
 719 
 720         if ((eid == _WPA_IE_ID_) && (!memcmp(&ie_ptr[2], wps_oui, 4))) {
 721                 /* DBG_8192C("==> found WPS_IE.....\n"); */
 722                 *wps_ielen = ie_ptr[1]+2;
 723                 match = true;
 724         }
 725         return match;
 726 }
 727 
 728 /**
 729  * rtw_get_wps_ie - Search WPS IE from a series of IEs
 730  * @in_ie: Address of IEs to search
 731  * @in_len: Length limit from in_ie
 732  * @wps_ie: If not NULL and WPS IE is found, WPS IE will be copied to the buf starting from wps_ie
 733  * @wps_ielen: If not NULL and WPS IE is found, will set to the length of the entire WPS IE
 734  *
 735  * Returns: The address of the WPS IE found, or NULL
 736  */
 737 u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
 738 {
 739         uint cnt;
 740         u8 *wpsie_ptr = NULL;
 741         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 742 
 743         if (wps_ielen)
 744                 *wps_ielen = 0;
 745 
 746         if (!in_ie || in_len <= 0)
 747                 return wpsie_ptr;
 748 
 749         cnt = 0;
 750 
 751         while (cnt < in_len) {
 752                 eid = in_ie[cnt];
 753 
 754                 if ((eid == _WPA_IE_ID_) && (!memcmp(&in_ie[cnt+2], wps_oui, 4))) {
 755                         wpsie_ptr = &in_ie[cnt];
 756 
 757                         if (wps_ie)
 758                                 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt+1]+2);
 759 
 760                         if (wps_ielen)
 761                                 *wps_ielen = in_ie[cnt+1]+2;
 762 
 763                         cnt += in_ie[cnt+1]+2;
 764 
 765                         break;
 766                 } else {
 767                         cnt += in_ie[cnt+1]+2; /* goto next */
 768                 }
 769         }
 770 
 771         return wpsie_ptr;
 772 }
 773 
 774 /**
 775  * rtw_get_wps_attr - Search a specific WPS attribute from a given WPS IE
 776  * @wps_ie: Address of WPS IE to search
 777  * @wps_ielen: Length limit from wps_ie
 778  * @target_attr_id: The attribute ID of WPS attribute to search
 779  * @buf_attr: If not NULL and the WPS attribute is found, WPS attribute will be copied to the buf starting from buf_attr
 780  * @len_attr: If not NULL and the WPS attribute is found, will set to the length of the entire WPS attribute
 781  *
 782  * Returns: the address of the specific WPS attribute found, or NULL
 783  */
 784 u8 *rtw_get_wps_attr(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_attr, u32 *len_attr)
 785 {
 786         u8 *attr_ptr = NULL;
 787         u8 *target_attr_ptr = NULL;
 788         u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
 789 
 790         if (len_attr)
 791                 *len_attr = 0;
 792 
 793         if ((wps_ie[0] != _VENDOR_SPECIFIC_IE_) ||
 794                 (memcmp(wps_ie + 2, wps_oui, 4))) {
 795                 return attr_ptr;
 796         }
 797 
 798         /*  6 = 1(Element ID) + 1(Length) + 4(WPS OUI) */
 799         attr_ptr = wps_ie + 6; /* goto first attr */
 800 
 801         while (attr_ptr - wps_ie < wps_ielen) {
 802                 /*  4 = 2(Attribute ID) + 2(Length) */
 803                 u16 attr_id = RTW_GET_BE16(attr_ptr);
 804                 u16 attr_data_len = RTW_GET_BE16(attr_ptr + 2);
 805                 u16 attr_len = attr_data_len + 4;
 806 
 807                 /* DBG_871X("%s attr_ptr:%p, id:%u, length:%u\n", __func__, attr_ptr, attr_id, attr_data_len); */
 808                 if (attr_id == target_attr_id) {
 809                         target_attr_ptr = attr_ptr;
 810 
 811                         if (buf_attr)
 812                                 memcpy(buf_attr, attr_ptr, attr_len);
 813 
 814                         if (len_attr)
 815                                 *len_attr = attr_len;
 816 
 817                         break;
 818                 } else {
 819                         attr_ptr += attr_len; /* goto next */
 820                 }
 821         }
 822 
 823         return target_attr_ptr;
 824 }
 825 
 826 /**
 827  * rtw_get_wps_attr_content - Search a specific WPS attribute content from a given WPS IE
 828  * @wps_ie: Address of WPS IE to search
 829  * @wps_ielen: Length limit from wps_ie
 830  * @target_attr_id: The attribute ID of WPS attribute to search
 831  * @buf_content: If not NULL and the WPS attribute is found, WPS attribute content will be copied to the buf starting from buf_content
 832  * @len_content: If not NULL and the WPS attribute is found, will set to the length of the WPS attribute content
 833  *
 834  * Returns: the address of the specific WPS attribute content found, or NULL
 835  */
 836 u8 *rtw_get_wps_attr_content(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_content, uint *len_content)
 837 {
 838         u8 *attr_ptr;
 839         u32 attr_len;
 840 
 841         if (len_content)
 842                 *len_content = 0;
 843 
 844         attr_ptr = rtw_get_wps_attr(wps_ie, wps_ielen, target_attr_id, NULL, &attr_len);
 845 
 846         if (attr_ptr && attr_len) {
 847                 if (buf_content)
 848                         memcpy(buf_content, attr_ptr+4, attr_len-4);
 849 
 850                 if (len_content)
 851                         *len_content = attr_len-4;
 852 
 853                 return attr_ptr+4;
 854         }
 855 
 856         return NULL;
 857 }
 858 
 859 static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
 860                                             struct rtw_ieee802_11_elems *elems,
 861                                             int show_errors)
 862 {
 863         unsigned int oui;
 864 
 865         /* first 3 bytes in vendor specific information element are the IEEE
 866          * OUI of the vendor. The following byte is used a vendor specific
 867          * sub-type. */
 868         if (elen < 4) {
 869                 if (show_errors) {
 870                         DBG_871X("short vendor specific "
 871                                    "information element ignored (len =%lu)\n",
 872                                    (unsigned long) elen);
 873                 }
 874                 return -1;
 875         }
 876 
 877         oui = RTW_GET_BE24(pos);
 878         switch (oui) {
 879         case OUI_MICROSOFT:
 880                 /* Microsoft/Wi-Fi information elements are further typed and
 881                  * subtyped */
 882                 switch (pos[3]) {
 883                 case 1:
 884                         /* Microsoft OUI (00:50:F2) with OUI Type 1:
 885                          * real WPA information element */
 886                         elems->wpa_ie = pos;
 887                         elems->wpa_ie_len = elen;
 888                         break;
 889                 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
 890                         if (elen < 5) {
 891                                 DBG_871X("short WME "
 892                                            "information element ignored "
 893                                            "(len =%lu)\n",
 894                                            (unsigned long) elen);
 895                                 return -1;
 896                         }
 897                         switch (pos[4]) {
 898                         case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
 899                         case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
 900                                 elems->wme = pos;
 901                                 elems->wme_len = elen;
 902                                 break;
 903                         case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
 904                                 elems->wme_tspec = pos;
 905                                 elems->wme_tspec_len = elen;
 906                                 break;
 907                         default:
 908                                 DBG_871X("unknown WME "
 909                                            "information element ignored "
 910                                            "(subtype =%d len =%lu)\n",
 911                                            pos[4], (unsigned long) elen);
 912                                 return -1;
 913                         }
 914                         break;
 915                 case 4:
 916                         /* Wi-Fi Protected Setup (WPS) IE */
 917                         elems->wps_ie = pos;
 918                         elems->wps_ie_len = elen;
 919                         break;
 920                 default:
 921                         DBG_871X("Unknown Microsoft "
 922                                    "information element ignored "
 923                                    "(type =%d len =%lu)\n",
 924                                    pos[3], (unsigned long) elen);
 925                         return -1;
 926                 }
 927                 break;
 928 
 929         case OUI_BROADCOM:
 930                 switch (pos[3]) {
 931                 case VENDOR_HT_CAPAB_OUI_TYPE:
 932                         elems->vendor_ht_cap = pos;
 933                         elems->vendor_ht_cap_len = elen;
 934                         break;
 935                 default:
 936                         DBG_871X("Unknown Broadcom "
 937                                    "information element ignored "
 938                                    "(type =%d len =%lu)\n",
 939                                    pos[3], (unsigned long) elen);
 940                         return -1;
 941                 }
 942                 break;
 943 
 944         default:
 945                 DBG_871X("unknown vendor specific information "
 946                            "element ignored (vendor OUI %02x:%02x:%02x "
 947                            "len =%lu)\n",
 948                            pos[0], pos[1], pos[2], (unsigned long) elen);
 949                 return -1;
 950         }
 951 
 952         return 0;
 953 }
 954 
 955 /**
 956  * ieee802_11_parse_elems - Parse information elements in management frames
 957  * @start: Pointer to the start of IEs
 958  * @len: Length of IE buffer in octets
 959  * @elems: Data structure for parsed elements
 960  * @show_errors: Whether to show parsing errors in debug log
 961  * Returns: Parsing result
 962  */
 963 ParseRes rtw_ieee802_11_parse_elems(u8 *start, uint len,
 964                                 struct rtw_ieee802_11_elems *elems,
 965                                 int show_errors)
 966 {
 967         uint left = len;
 968         u8 *pos = start;
 969         int unknown = 0;
 970 
 971         memset(elems, 0, sizeof(*elems));
 972 
 973         while (left >= 2) {
 974                 u8 id, elen;
 975 
 976                 id = *pos++;
 977                 elen = *pos++;
 978                 left -= 2;
 979 
 980                 if (elen > left) {
 981                         if (show_errors) {
 982                                 DBG_871X("IEEE 802.11 element "
 983                                            "parse failed (id =%d elen =%d "
 984                                            "left =%lu)\n",
 985                                            id, elen, (unsigned long) left);
 986                         }
 987                         return ParseFailed;
 988                 }
 989 
 990                 switch (id) {
 991                 case WLAN_EID_SSID:
 992                         elems->ssid = pos;
 993                         elems->ssid_len = elen;
 994                         break;
 995                 case WLAN_EID_SUPP_RATES:
 996                         elems->supp_rates = pos;
 997                         elems->supp_rates_len = elen;
 998                         break;
 999                 case WLAN_EID_FH_PARAMS:
1000                         elems->fh_params = pos;
1001                         elems->fh_params_len = elen;
1002                         break;
1003                 case WLAN_EID_DS_PARAMS:
1004                         elems->ds_params = pos;
1005                         elems->ds_params_len = elen;
1006                         break;
1007                 case WLAN_EID_CF_PARAMS:
1008                         elems->cf_params = pos;
1009                         elems->cf_params_len = elen;
1010                         break;
1011                 case WLAN_EID_TIM:
1012                         elems->tim = pos;
1013                         elems->tim_len = elen;
1014                         break;
1015                 case WLAN_EID_IBSS_PARAMS:
1016                         elems->ibss_params = pos;
1017                         elems->ibss_params_len = elen;
1018                         break;
1019                 case WLAN_EID_CHALLENGE:
1020                         elems->challenge = pos;
1021                         elems->challenge_len = elen;
1022                         break;
1023                 case WLAN_EID_ERP_INFO:
1024                         elems->erp_info = pos;
1025                         elems->erp_info_len = elen;
1026                         break;
1027                 case WLAN_EID_EXT_SUPP_RATES:
1028                         elems->ext_supp_rates = pos;
1029                         elems->ext_supp_rates_len = elen;
1030                         break;
1031                 case WLAN_EID_VENDOR_SPECIFIC:
1032                         if (rtw_ieee802_11_parse_vendor_specific(pos, elen,
1033                                                              elems,
1034                                                              show_errors))
1035                                 unknown++;
1036                         break;
1037                 case WLAN_EID_RSN:
1038                         elems->rsn_ie = pos;
1039                         elems->rsn_ie_len = elen;
1040                         break;
1041                 case WLAN_EID_PWR_CAPABILITY:
1042                         elems->power_cap = pos;
1043                         elems->power_cap_len = elen;
1044                         break;
1045                 case WLAN_EID_SUPPORTED_CHANNELS:
1046                         elems->supp_channels = pos;
1047                         elems->supp_channels_len = elen;
1048                         break;
1049                 case WLAN_EID_MOBILITY_DOMAIN:
1050                         elems->mdie = pos;
1051                         elems->mdie_len = elen;
1052                         break;
1053                 case WLAN_EID_FAST_BSS_TRANSITION:
1054                         elems->ftie = pos;
1055                         elems->ftie_len = elen;
1056                         break;
1057                 case WLAN_EID_TIMEOUT_INTERVAL:
1058                         elems->timeout_int = pos;
1059                         elems->timeout_int_len = elen;
1060                         break;
1061                 case WLAN_EID_HT_CAP:
1062                         elems->ht_capabilities = pos;
1063                         elems->ht_capabilities_len = elen;
1064                         break;
1065                 case WLAN_EID_HT_OPERATION:
1066                         elems->ht_operation = pos;
1067                         elems->ht_operation_len = elen;
1068                         break;
1069                 case WLAN_EID_VHT_CAPABILITY:
1070                         elems->vht_capabilities = pos;
1071                         elems->vht_capabilities_len = elen;
1072                         break;
1073                 case WLAN_EID_VHT_OPERATION:
1074                         elems->vht_operation = pos;
1075                         elems->vht_operation_len = elen;
1076                         break;
1077                 case WLAN_EID_VHT_OP_MODE_NOTIFY:
1078                         elems->vht_op_mode_notify = pos;
1079                         elems->vht_op_mode_notify_len = elen;
1080                         break;
1081                 default:
1082                         unknown++;
1083                         if (!show_errors)
1084                                 break;
1085                         DBG_871X("IEEE 802.11 element parse "
1086                                    "ignored unknown element (id =%d elen =%d)\n",
1087                                    id, elen);
1088                         break;
1089                 }
1090 
1091                 left -= elen;
1092                 pos += elen;
1093         }
1094 
1095         if (left)
1096                 return ParseFailed;
1097 
1098         return unknown ? ParseUnknown : ParseOK;
1099 }
1100 
1101 void rtw_macaddr_cfg(struct device *dev, u8 *mac_addr)
1102 {
1103         u8 mac[ETH_ALEN];
1104         struct device_node *np = dev->of_node;
1105         const unsigned char *addr;
1106         int len;
1107 
1108         if (!mac_addr)
1109                 return;
1110 
1111         if (rtw_initmac && mac_pton(rtw_initmac, mac)) {
1112                 /* Users specify the mac address */
1113                 ether_addr_copy(mac_addr, mac);
1114         } else {
1115                 /* Use the mac address stored in the Efuse */
1116                 ether_addr_copy(mac, mac_addr);
1117         }
1118 
1119         if (is_broadcast_ether_addr(mac) || is_zero_ether_addr(mac)) {
1120                 if ((addr = of_get_property(np, "local-mac-address", &len)) &&
1121                     len == ETH_ALEN) {
1122                         ether_addr_copy(mac_addr, addr);
1123                 } else {
1124                         eth_random_addr(mac_addr);
1125                         DBG_871X("MAC Address from efuse error, assign random one !!!\n");
1126                 }
1127         }
1128 
1129         DBG_871X("rtw_macaddr_cfg MAC Address  = "MAC_FMT"\n", MAC_ARG(mac_addr));
1130 }
1131 
1132 static int rtw_get_cipher_info(struct wlan_network *pnetwork)
1133 {
1134         u32 wpa_ielen;
1135         unsigned char *pbuf;
1136         int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
1137         int ret = _FAIL;
1138 
1139         pbuf = rtw_get_wpa_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1140 
1141         if (pbuf && (wpa_ielen > 0)) {
1142                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_cipher_info: wpa_ielen: %d", wpa_ielen));
1143                 if (_SUCCESS == rtw_parse_wpa_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1144                         pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1145                         pnetwork->BcnInfo.group_cipher = group_cipher;
1146                         pnetwork->BcnInfo.is_8021x = is8021x;
1147                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d, is_8021x is %d",
1148                                                 __func__, pnetwork->BcnInfo.pairwise_cipher, pnetwork->BcnInfo.is_8021x));
1149                         ret = _SUCCESS;
1150                 }
1151         } else {
1152                 pbuf = rtw_get_wpa2_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1153 
1154                 if (pbuf && (wpa_ielen > 0)) {
1155                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE\n"));
1156                         if (_SUCCESS == rtw_parse_wpa2_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1157                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE  OK!!!\n"));
1158                                 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1159                                 pnetwork->BcnInfo.group_cipher = group_cipher;
1160                                 pnetwork->BcnInfo.is_8021x = is8021x;
1161                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d,"
1162                                                         "pnetwork->group_cipher is %d, is_8021x is %d", __func__, pnetwork->BcnInfo.pairwise_cipher,
1163                                                         pnetwork->BcnInfo.group_cipher, pnetwork->BcnInfo.is_8021x));
1164                                 ret = _SUCCESS;
1165                         }
1166                 }
1167         }
1168 
1169         return ret;
1170 }
1171 
1172 void rtw_get_bcn_info(struct wlan_network *pnetwork)
1173 {
1174         unsigned short cap = 0;
1175         u8 bencrypt = 0;
1176         /* u8 wpa_ie[255], rsn_ie[255]; */
1177         u16 wpa_len = 0, rsn_len = 0;
1178         struct HT_info_element *pht_info = NULL;
1179         struct ieee80211_ht_cap *pht_cap = NULL;
1180         unsigned int            len;
1181         unsigned char   *p;
1182         __le16 le_cap;
1183 
1184         memcpy((u8 *)&le_cap, rtw_get_capability_from_ie(pnetwork->network.IEs), 2);
1185         cap = le16_to_cpu(le_cap);
1186         if (cap & WLAN_CAPABILITY_PRIVACY) {
1187                 bencrypt = 1;
1188                 pnetwork->network.Privacy = 1;
1189         } else {
1190                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
1191         }
1192         rtw_get_sec_ie(pnetwork->network.IEs, pnetwork->network.IELength, NULL, &rsn_len, NULL, &wpa_len);
1193         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: ssid =%s\n", pnetwork->network.Ssid.Ssid));
1194         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: wpa_len =%d rsn_len =%d\n", wpa_len, rsn_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 
1198         if (rsn_len > 0) {
1199                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
1200         } else if (wpa_len > 0) {
1201                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
1202         } else {
1203                 if (bencrypt)
1204                         pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
1205         }
1206         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("rtw_get_bcn_info: pnetwork->encryp_protocol is %x\n",
1207                                 pnetwork->BcnInfo.encryp_protocol));
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         rtw_get_cipher_info(pnetwork);
1211 
1212         /* get bwmode and ch_offset */
1213         /* parsing HT_CAP_IE */
1214         p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_CAPABILITY_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1215         if (p && len > 0) {
1216                         pht_cap = (struct ieee80211_ht_cap *)(p + 2);
1217                         pnetwork->BcnInfo.ht_cap_info = le16_to_cpu(pht_cap->cap_info);
1218         } else {
1219                         pnetwork->BcnInfo.ht_cap_info = 0;
1220         }
1221         /* parsing HT_INFO_IE */
1222         p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, _HT_ADD_INFO_IE_, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1223         if (p && len > 0) {
1224                         pht_info = (struct HT_info_element *)(p + 2);
1225                         pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
1226         } else {
1227                         pnetwork->BcnInfo.ht_info_infos_0 = 0;
1228         }
1229 }
1230 
1231 /* show MCS rate, unit: 100Kbps */
1232 u16 rtw_mcs_rate(u8 rf_type, u8 bw_40MHz, u8 short_GI, unsigned char *MCS_rate)
1233 {
1234         u16 max_rate = 0;
1235 
1236         if (rf_type == RF_1T1R) {
1237                 if (MCS_rate[0] & BIT(7))
1238                         max_rate = (bw_40MHz) ? ((short_GI)?1500:1350):((short_GI)?722:650);
1239                 else if (MCS_rate[0] & BIT(6))
1240                         max_rate = (bw_40MHz) ? ((short_GI)?1350:1215):((short_GI)?650:585);
1241                 else if (MCS_rate[0] & BIT(5))
1242                         max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1243                 else if (MCS_rate[0] & BIT(4))
1244                         max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1245                 else if (MCS_rate[0] & BIT(3))
1246                         max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1247                 else if (MCS_rate[0] & BIT(2))
1248                         max_rate = (bw_40MHz) ? ((short_GI)?450:405):((short_GI)?217:195);
1249                 else if (MCS_rate[0] & BIT(1))
1250                         max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1251                 else if (MCS_rate[0] & BIT(0))
1252                         max_rate = (bw_40MHz) ? ((short_GI)?150:135):((short_GI)?72:65);
1253         } else {
1254                 if (MCS_rate[1]) {
1255                         if (MCS_rate[1] & BIT(7))
1256                                 max_rate = (bw_40MHz) ? ((short_GI)?3000:2700):((short_GI)?1444:1300);
1257                         else if (MCS_rate[1] & BIT(6))
1258                                 max_rate = (bw_40MHz) ? ((short_GI)?2700:2430):((short_GI)?1300:1170);
1259                         else if (MCS_rate[1] & BIT(5))
1260                                 max_rate = (bw_40MHz) ? ((short_GI)?2400:2160):((short_GI)?1156:1040);
1261                         else if (MCS_rate[1] & BIT(4))
1262                                 max_rate = (bw_40MHz) ? ((short_GI)?1800:1620):((short_GI)?867:780);
1263                         else if (MCS_rate[1] & BIT(3))
1264                                 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1265                         else if (MCS_rate[1] & BIT(2))
1266                                 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1267                         else if (MCS_rate[1] & BIT(1))
1268                                 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1269                         else if (MCS_rate[1] & BIT(0))
1270                                 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1271                 } else {
1272                         if (MCS_rate[0] & BIT(7))
1273                                 max_rate = (bw_40MHz) ? ((short_GI)?1500:1350):((short_GI)?722:650);
1274                         else if (MCS_rate[0] & BIT(6))
1275                                 max_rate = (bw_40MHz) ? ((short_GI)?1350:1215):((short_GI)?650:585);
1276                         else if (MCS_rate[0] & BIT(5))
1277                                 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1278                         else if (MCS_rate[0] & BIT(4))
1279                                 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1280                         else if (MCS_rate[0] & BIT(3))
1281                                 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1282                         else if (MCS_rate[0] & BIT(2))
1283                                 max_rate = (bw_40MHz) ? ((short_GI)?450:405):((short_GI)?217:195);
1284                         else if (MCS_rate[0] & BIT(1))
1285                                 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1286                         else if (MCS_rate[0] & BIT(0))
1287                                 max_rate = (bw_40MHz) ? ((short_GI)?150:135):((short_GI)?72:65);
1288                 }
1289         }
1290         return max_rate;
1291 }
1292 
1293 int rtw_action_frame_parse(const u8 *frame, u32 frame_len, u8 *category, u8 *action)
1294 {
1295         const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr);
1296         u16 fc;
1297         u8 c;
1298         u8 a = ACT_PUBLIC_MAX;
1299 
1300         fc = le16_to_cpu(((struct ieee80211_hdr_3addr *)frame)->frame_control);
1301 
1302         if ((fc & (IEEE80211_FCTL_FTYPE|IEEE80211_FCTL_STYPE))
1303                 != (IEEE80211_FTYPE_MGMT|IEEE80211_STYPE_ACTION)
1304         ) {
1305                 return false;
1306         }
1307 
1308         c = frame_body[0];
1309 
1310         switch (c) {
1311         case RTW_WLAN_CATEGORY_P2P: /* vendor-specific */
1312                 break;
1313         default:
1314                 a = frame_body[1];
1315         }
1316 
1317         if (category)
1318                 *category = c;
1319         if (action)
1320                 *action = a;
1321 
1322         return true;
1323 }
1324 
1325 static const char *_action_public_str[] = {
1326         "ACT_PUB_BSSCOEXIST",
1327         "ACT_PUB_DSE_ENABLE",
1328         "ACT_PUB_DSE_DEENABLE",
1329         "ACT_PUB_DSE_REG_LOCATION",
1330         "ACT_PUB_EXT_CHL_SWITCH",
1331         "ACT_PUB_DSE_MSR_REQ",
1332         "ACT_PUB_DSE_MSR_RPRT",
1333         "ACT_PUB_MP",
1334         "ACT_PUB_DSE_PWR_CONSTRAINT",
1335         "ACT_PUB_VENDOR",
1336         "ACT_PUB_GAS_INITIAL_REQ",
1337         "ACT_PUB_GAS_INITIAL_RSP",
1338         "ACT_PUB_GAS_COMEBACK_REQ",
1339         "ACT_PUB_GAS_COMEBACK_RSP",
1340         "ACT_PUB_TDLS_DISCOVERY_RSP",
1341         "ACT_PUB_LOCATION_TRACK",
1342         "ACT_PUB_RSVD",
1343 };
1344 
1345 const char *action_public_str(u8 action)
1346 {
1347         action = (action >= ACT_PUBLIC_MAX) ? ACT_PUBLIC_MAX : action;
1348         return _action_public_str[action];
1349 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/staging/rtl8723bs/core/rtw_ieee80211.c

DEFINITIONS
