drivers/staging/rtl8723au/core/rtw_ieee80211.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  ******************************************************************************/
  15 #define _IEEE80211_C
  16
  17 #include <drv_types.h>
  18 #include <linux/ieee80211.h>
  19 #include <ieee80211.h>
  20 #include <wifi.h>
  21 #include <osdep_service.h>
  22 #include <wlan_bssdef.h>
  23
  24 u8 RTW_WPA_OUI23A_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
  25 u16 RTW_WPA_VERSION23A = 1;
  26 u8 WPA_AUTH_KEY_MGMT_NONE23A[] = { 0x00, 0x50, 0xf2, 0 };
  27 u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X23A[] = { 0x00, 0x50, 0xf2, 1 };
  28 u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X23A[] = { 0x00, 0x50, 0xf2, 2 };
  29 u8 WPA_CIPHER_SUITE_NONE23A[] = { 0x00, 0x50, 0xf2, 0 };
  30 u8 WPA_CIPHER_SUITE_WEP4023A[] = { 0x00, 0x50, 0xf2, 1 };
  31 u8 WPA_CIPHER_SUITE_TKIP23A[] = { 0x00, 0x50, 0xf2, 2 };
  32 u8 WPA_CIPHER_SUITE_WRAP23A[] = { 0x00, 0x50, 0xf2, 3 };
  33 u8 WPA_CIPHER_SUITE_CCMP23A[] = { 0x00, 0x50, 0xf2, 4 };
  34 u8 WPA_CIPHER_SUITE_WEP10423A[] = { 0x00, 0x50, 0xf2, 5 };
  35
  36 u16 RSN_VERSION_BSD23A = 1;
  37 u8 RSN_AUTH_KEY_MGMT_UNSPEC_802_1X23A[] = { 0x00, 0x0f, 0xac, 1 };
  38 u8 RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X23A[] = { 0x00, 0x0f, 0xac, 2 };
  39 u8 RSN_CIPHER_SUITE_NONE23A[] = { 0x00, 0x0f, 0xac, 0 };
  40 u8 RSN_CIPHER_SUITE_WEP4023A[] = { 0x00, 0x0f, 0xac, 1 };
  41 u8 RSN_CIPHER_SUITE_TKIP23A[] = { 0x00, 0x0f, 0xac, 2 };
  42 u8 RSN_CIPHER_SUITE_WRAP23A[] = { 0x00, 0x0f, 0xac, 3 };
  43 u8 RSN_CIPHER_SUITE_CCMP23A[] = { 0x00, 0x0f, 0xac, 4 };
  44 u8 RSN_CIPHER_SUITE_WEP10423A[] = { 0x00, 0x0f, 0xac, 5 };
  45 /*  */
  46 /*  for adhoc-master to generate ie and provide supported-rate to fw */
  47 /*  */
  48
  49 static u8       WIFI_CCKRATES[] =
  50 {(IEEE80211_CCK_RATE_1MB | IEEE80211_BASIC_RATE_MASK),
  51  (IEEE80211_CCK_RATE_2MB | IEEE80211_BASIC_RATE_MASK),
  52  (IEEE80211_CCK_RATE_5MB | IEEE80211_BASIC_RATE_MASK),
  53  (IEEE80211_CCK_RATE_11MB | IEEE80211_BASIC_RATE_MASK)};
  54
  55 static u8       WIFI_OFDMRATES[] =
  56 {(IEEE80211_OFDM_RATE_6MB),
  57  (IEEE80211_OFDM_RATE_9MB),
  58  (IEEE80211_OFDM_RATE_12MB),
  59  (IEEE80211_OFDM_RATE_18MB),
  60  (IEEE80211_OFDM_RATE_24MB),
  61  IEEE80211_OFDM_RATE_36MB,
  62  IEEE80211_OFDM_RATE_48MB,
  63  IEEE80211_OFDM_RATE_54MB};
  64
  65 int rtw_get_bit_value_from_ieee_value23a(u8 val)
  66 {
  67         unsigned char dot11_rate_table[]=
  68                 {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108, 0};
  69
  70         int i = 0;
  71         while (dot11_rate_table[i] != 0) {
  72                 if (dot11_rate_table[i] == val)
  73                         return BIT(i);
  74                 i++;
  75         }
  76         return 0;
  77 }
  78
  79 uint rtw_is_cckrates_included23a(u8 *rate)
  80 {
  81         u32 i = 0;
  82
  83         while (rate[i] != 0) {
  84                 if ((((rate[i]) & 0x7f) == 2) || (((rate[i]) & 0x7f) == 4) ||
  85                     (((rate[i]) & 0x7f) == 11) || (((rate[i]) & 0x7f) == 22))
  86                         return true;
  87                 i++;
  88         }
  89
  90         return false;
  91 }
  92
  93 uint rtw_is_cckratesonly_included23a(u8 *rate)
  94 {
  95         u32 i = 0;
  96
  97         while (rate[i] != 0) {
  98                 if ((((rate[i]) & 0x7f) != 2) && (((rate[i]) & 0x7f) != 4) &&
  99                     (((rate[i]) & 0x7f) != 11) && (((rate[i]) & 0x7f) != 22))
 100                         return false;
 101
 102                 i++;
 103         }
 104
 105         return true;
 106 }
 107
 108 int rtw_check_network_type23a(unsigned char *rate, int ratelen, int channel)
 109 {
 110         if (channel > 14) {
 111                 if ((rtw_is_cckrates_included23a(rate)) == true)
 112                         return WIRELESS_INVALID;
 113                 else
 114                         return WIRELESS_11A;
 115         } else {  /*  could be pure B, pure G, or B/G */
 116                 if ((rtw_is_cckratesonly_included23a(rate)) == true)
 117                         return WIRELESS_11B;
 118                 else if ((rtw_is_cckrates_included23a(rate)) == true)
 119                         return  WIRELESS_11BG;
 120                 else
 121                         return WIRELESS_11G;
 122         }
 123 }
 124
 125 u8 *rtw_set_fixed_ie23a(unsigned char *pbuf, unsigned int len,
 126                      unsigned char *source, unsigned int *frlen)
 127 {
 128         memcpy((void *)pbuf, (void *)source, len);
 129         *frlen = *frlen + len;
 130         return pbuf + len;
 131 }
 132
 133 /*  rtw_set_ie23a will update frame length */
 134 u8 *rtw_set_ie23a(u8 *pbuf, int index, uint len, u8 *source, uint *frlen)
 135 {
 136
 137         *pbuf = (u8)index;
 138
 139         *(pbuf + 1) = (u8)len;
 140
 141         if (len > 0)
 142                 memcpy((void *)(pbuf + 2), (void *)source, len);
 143
 144         *frlen = *frlen + (len + 2);
 145
 146
 147         return pbuf + len + 2;
 148 }
 149
 150 inline u8 *rtw_set_ie23a_ch_switch (u8 *buf, u32 *buf_len, u8 ch_switch_mode,
 151                                 u8 new_ch, u8 ch_switch_cnt)
 152 {
 153         u8 ie_data[3];
 154
 155         ie_data[0] = ch_switch_mode;
 156         ie_data[1] = new_ch;
 157         ie_data[2] = ch_switch_cnt;
 158         return rtw_set_ie23a(buf, WLAN_EID_CHANNEL_SWITCH,  3, ie_data, buf_len);
 159 }
 160
 161 inline u8 secondary_ch_offset_to_hal_ch_offset23a(u8 ch_offset)
 162 {
 163         if (ch_offset == SCN)
 164                 return HAL_PRIME_CHNL_OFFSET_DONT_CARE;
 165         else if (ch_offset == SCA)
 166                 return HAL_PRIME_CHNL_OFFSET_UPPER;
 167         else if (ch_offset == SCB)
 168                 return HAL_PRIME_CHNL_OFFSET_LOWER;
 169
 170         return HAL_PRIME_CHNL_OFFSET_DONT_CARE;
 171 }
 172
 173 inline u8 hal_ch_offset_to_secondary_ch_offset23a(u8 ch_offset)
 174 {
 175         if (ch_offset == HAL_PRIME_CHNL_OFFSET_DONT_CARE)
 176                 return SCN;
 177         else if (ch_offset == HAL_PRIME_CHNL_OFFSET_LOWER)
 178                 return SCB;
 179         else if (ch_offset == HAL_PRIME_CHNL_OFFSET_UPPER)
 180                 return SCA;
 181
 182         return SCN;
 183 }
 184
 185 inline u8 *rtw_set_ie23a_secondary_ch_offset(u8 *buf, u32 *buf_len,
 186                                           u8 secondary_ch_offset)
 187 {
 188         return rtw_set_ie23a(buf, WLAN_EID_SECONDARY_CHANNEL_OFFSET,
 189                           1, &secondary_ch_offset, buf_len);
 190 }
 191
 192 inline u8 *rtw_set_ie23a_mesh_ch_switch_parm(u8 *buf, u32 *buf_len, u8 ttl,
 193                                           u8 flags, u16 reason, u16 precedence)
 194 {
 195         u8 ie_data[6];
 196
 197         ie_data[0] = ttl;
 198         ie_data[1] = flags;
 199         put_unaligned_le16(reason, (u8*)&ie_data[2]);
 200         put_unaligned_le16(precedence, (u8*)&ie_data[4]);
 201
 202         return rtw_set_ie23a(buf, 0x118,  6, ie_data, buf_len);
 203 }
 204
 205 /*----------------------------------------------------------------------------
 206 index: the information element id index, limit is the limit for search
 207 -----------------------------------------------------------------------------*/
 208 u8 *rtw_get_ie23a(u8 *pbuf, int index, int *len, int limit)
 209 {
 210         int tmp, i;
 211         u8 *p;
 212
 213         if (limit < 1) {
 214
 215                 return NULL;
 216         }
 217
 218         p = pbuf;
 219         i = 0;
 220         *len = 0;
 221         while (1) {
 222                 if (*p == index) {
 223                         *len = *(p + 1);
 224                         return p;
 225                 } else {
 226                         tmp = *(p + 1);
 227                         p += (tmp + 2);
 228                         i += (tmp + 2);
 229                 }
 230                 if (i >= limit)
 231                         break;
 232         }
 233
 234         return NULL;
 235 }
 236
 237 /**
 238  * rtw_get_ie23a_ex - Search specific IE from a series of IEs
 239  * @in_ie: Address of IEs to search
 240  * @in_len: Length limit from in_ie
 241  * @eid: Element ID to match
 242  * @oui: OUI to match
 243  * @oui_len: OUI length
 244  * @ie: If not NULL and the specific IE is found, the IE will be copied
 245  *      to the buf starting from the specific IE
 246  * @ielen: If not NULL and the specific IE is found, will set to the length
 247  *         of the entire IE
 248  *
 249  * Returns: The address of the specific IE found, or NULL
 250  */
 251 u8 *rtw_get_ie23a_ex(u8 *in_ie, uint in_len, u8 eid, u8 *oui, u8 oui_len,
 252                   u8 *ie, uint *ielen)
 253 {
 254         uint cnt;
 255         u8 *target_ie = NULL;
 256
 257         if (ielen)
 258                 *ielen = 0;
 259
 260         if (!in_ie || in_len <= 0)
 261                 return target_ie;
 262
 263         cnt = 0;
 264
 265         while (cnt < in_len) {
 266                 if (eid == in_ie[cnt] &&
 267                     (!oui || !memcmp(&in_ie[cnt+2], oui, oui_len))) {
 268                         target_ie = &in_ie[cnt];
 269
 270                         if (ie)
 271                                 memcpy(ie, &in_ie[cnt], in_ie[cnt+1]+2);
 272
 273                         if (ielen)
 274                                 *ielen = in_ie[cnt+1]+2;
 275                         break;
 276                 } else {
 277                         cnt += in_ie[cnt + 1] + 2; /* goto next */
 278                 }
 279         }
 280
 281         return target_ie;
 282 }
 283
 284 /**
 285  * rtw_ies_remove_ie23a - Find matching IEs and remove
 286  * @ies: Address of IEs to search
 287  * @ies_len: Pointer of length of ies, will update to new length
 288  * @offset: The offset to start scarch
 289  * @eid: Element ID to match
 290  * @oui: OUI to match
 291  * @oui_len: OUI length
 292  *
 293  * Returns: _SUCCESS: ies is updated, _FAIL: not updated
 294  */
 295 int rtw_ies_remove_ie23a(u8 *ies, uint *ies_len, uint offset, u8 eid,
 296                       u8 *oui, u8 oui_len)
 297 {
 298         int ret = _FAIL;
 299         u8 *target_ie;
 300         u32 target_ielen;
 301         u8 *start;
 302         uint search_len;
 303
 304         if (!ies || !ies_len || *ies_len <= offset)
 305                 goto exit;
 306
 307         start = ies + offset;
 308         search_len = *ies_len - offset;
 309
 310         while (1) {
 311                 target_ie = rtw_get_ie23a_ex(start, search_len, eid, oui, oui_len,
 312                                           NULL, &target_ielen);
 313                 if (target_ie && target_ielen) {
 314                         u8 buf[MAX_IE_SZ] = {0};
 315                         u8 *remain_ies = target_ie + target_ielen;
 316                         uint remain_len = search_len - (remain_ies - start);
 317
 318                         memcpy(buf, remain_ies, remain_len);
 319                         memcpy(target_ie, buf, remain_len);
 320                         *ies_len = *ies_len - target_ielen;
 321                         ret = _SUCCESS;
 322
 323                         start = target_ie;
 324                         search_len = remain_len;
 325                 } else {
 326                         break;
 327                 }
 328         }
 329 exit:
 330         return ret;
 331 }
 332
 333 void rtw_set_supported_rate23a(u8* SupportedRates, uint mode)
 334 {
 335
 336
 337         memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
 338
 339         switch (mode)
 340         {
 341         case WIRELESS_11B:
 342                 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
 343                 break;
 344
 345         case WIRELESS_11G:
 346         case WIRELESS_11A:
 347         case WIRELESS_11_5N:
 348         case WIRELESS_11A_5N:/* Todo: no basic rate for ofdm ? */
 349                 memcpy(SupportedRates, WIFI_OFDMRATES,
 350                        IEEE80211_NUM_OFDM_RATESLEN);
 351                 break;
 352
 353         case WIRELESS_11BG:
 354         case WIRELESS_11G_24N:
 355         case WIRELESS_11_24N:
 356         case WIRELESS_11BG_24N:
 357                 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
 358                 memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES,
 359                        IEEE80211_NUM_OFDM_RATESLEN);
 360                 break;
 361         }
 362
 363 }
 364
 365 uint rtw_get_rateset_len23a(u8 *rateset)
 366 {
 367         uint i = 0;
 368
 369         while(1) {
 370                 if ((rateset[i]) == 0)
 371                         break;
 372
 373                 if (i > 12)
 374                         break;
 375
 376                 i++;
 377         }
 378
 379         return i;
 380 }
 381
 382 int rtw_generate_ie23a(struct registry_priv *pregistrypriv)
 383 {
 384         u8      wireless_mode;
 385         int     sz = 0, rateLen;
 386         struct wlan_bssid_ex*   pdev_network = &pregistrypriv->dev_network;
 387         u8*     ie = pdev_network->IEs;
 388
 389
 390
 391         /* timestamp will be inserted by hardware */
 392         sz += 8;
 393         ie += sz;
 394
 395         /* beacon interval : 2bytes */
 396         /* BCN_INTERVAL; */
 397         *(u16*)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);
 398         sz += 2;
 399         ie += 2;
 400
 401         /* capability info */
 402         *(u16*)ie = 0;
 403
 404         *(u16*)ie |= cpu_to_le16(cap_IBSS);
 405
 406         if (pregistrypriv->preamble == PREAMBLE_SHORT)
 407                 *(u16*)ie |= cpu_to_le16(cap_ShortPremble);
 408
 409         if (pdev_network->Privacy)
 410                 *(u16*)ie |= cpu_to_le16(cap_Privacy);
 411
 412         sz += 2;
 413         ie += 2;
 414
 415         /* SSID */
 416         ie = rtw_set_ie23a(ie, _SSID_IE_, pdev_network->Ssid.ssid_len,
 417                         pdev_network->Ssid.ssid, &sz);
 418
 419         /* supported rates */
 420         if (pregistrypriv->wireless_mode == WIRELESS_11ABGN) {
 421                 if (pdev_network->Configuration.DSConfig > 14)
 422                         wireless_mode = WIRELESS_11A_5N;
 423                 else
 424                         wireless_mode = WIRELESS_11BG_24N;
 425         } else {
 426                 wireless_mode = pregistrypriv->wireless_mode;
 427         }
 428
 429         rtw_set_supported_rate23a(pdev_network->SupportedRates, wireless_mode) ;
 430
 431         rateLen = rtw_get_rateset_len23a(pdev_network->SupportedRates);
 432
 433         if (rateLen > 8) {
 434                 ie = rtw_set_ie23a(ie, _SUPPORTEDRATES_IE_, 8,
 435                                 pdev_network->SupportedRates, &sz);
 436                 /* ie = rtw_set_ie23a(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz); */
 437         } else {
 438                 ie = rtw_set_ie23a(ie, _SUPPORTEDRATES_IE_, rateLen,
 439                                 pdev_network->SupportedRates, &sz);
 440         }
 441
 442         /* DS parameter set */
 443         ie = rtw_set_ie23a(ie, _DSSET_IE_, 1,
 444                            (u8 *)&pdev_network->Configuration.DSConfig, &sz);
 445
 446         /* IBSS Parameter Set */
 447
 448         ie = rtw_set_ie23a(ie, _IBSS_PARA_IE_, 2,
 449                            (u8 *)&pdev_network->Configuration.ATIMWindow, &sz);
 450
 451         if (rateLen > 8) {
 452                 ie = rtw_set_ie23a(ie, _EXT_SUPPORTEDRATES_IE_, (rateLen - 8),
 453                                 (pdev_network->SupportedRates + 8), &sz);
 454         }
 455
 456
 457
 458         /* return _SUCCESS; */
 459
 460         return sz;
 461 }
 462
 463 unsigned char *rtw_get_wpa_ie23a(unsigned char *pie, int *wpa_ie_len, int limit)
 464 {
 465         int len;
 466         u16 val16;
 467         unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
 468         u8 *pbuf = pie;
 469         int limit_new = limit;
 470
 471         while(1) {
 472                 pbuf = rtw_get_ie23a(pbuf, _WPA_IE_ID_, &len, limit_new);
 473
 474                 if (pbuf) {
 475                         /* check if oui matches... */
 476                         if (memcmp((pbuf + 2), wpa_oui_type,
 477                                    sizeof(wpa_oui_type))) {
 478                                 goto check_next_ie;
 479                         }
 480
 481                         /* check version... */
 482                         memcpy((u8 *)&val16, (pbuf + 6), sizeof(val16));
 483
 484                         val16 = le16_to_cpu(val16);
 485                         if (val16 != 0x0001)
 486                                 goto check_next_ie;
 487
 488                         *wpa_ie_len = *(pbuf + 1);
 489
 490                         return pbuf;
 491                 } else {
 492                         *wpa_ie_len = 0;
 493                         return NULL;
 494                 }
 495
 496 check_next_ie:
 497
 498                 limit_new = limit - (pbuf - pie) - 2 - len;
 499
 500                 if (limit_new <= 0)
 501                         break;
 502
 503                 pbuf += (2 + len);
 504         }
 505
 506         *wpa_ie_len = 0;
 507
 508         return NULL;
 509 }
 510
 511 unsigned char *rtw_get_wpa2_ie23a(unsigned char *pie, int *rsn_ie_len, int limit)
 512 {
 513         return rtw_get_ie23a(pie, _WPA2_IE_ID_, rsn_ie_len, limit);
 514 }
 515
 516 int rtw_get_wpa_cipher_suite23a(u8 *s)
 517 {
 518         if (!memcmp(s, WPA_CIPHER_SUITE_NONE23A, WPA_SELECTOR_LEN))
 519                 return WPA_CIPHER_NONE;
 520         if (!memcmp(s, WPA_CIPHER_SUITE_WEP4023A, WPA_SELECTOR_LEN))
 521                 return WPA_CIPHER_WEP40;
 522         if (!memcmp(s, WPA_CIPHER_SUITE_TKIP23A, WPA_SELECTOR_LEN))
 523                 return WPA_CIPHER_TKIP;
 524         if (!memcmp(s, WPA_CIPHER_SUITE_CCMP23A, WPA_SELECTOR_LEN))
 525                 return WPA_CIPHER_CCMP;
 526         if (!memcmp(s, WPA_CIPHER_SUITE_WEP10423A, WPA_SELECTOR_LEN))
 527                 return WPA_CIPHER_WEP104;
 528
 529         return 0;
 530 }
 531
 532 int rtw_get_wpa2_cipher_suite23a(u8 *s)
 533 {
 534         if (!memcmp(s, RSN_CIPHER_SUITE_NONE23A, RSN_SELECTOR_LEN))
 535                 return WPA_CIPHER_NONE;
 536         if (!memcmp(s, RSN_CIPHER_SUITE_WEP4023A, RSN_SELECTOR_LEN))
 537                 return WPA_CIPHER_WEP40;
 538         if (!memcmp(s, RSN_CIPHER_SUITE_TKIP23A, RSN_SELECTOR_LEN))
 539                 return WPA_CIPHER_TKIP;
 540         if (!memcmp(s, RSN_CIPHER_SUITE_CCMP23A, RSN_SELECTOR_LEN))
 541                 return WPA_CIPHER_CCMP;
 542         if (!memcmp(s, RSN_CIPHER_SUITE_WEP10423A, RSN_SELECTOR_LEN))
 543                 return WPA_CIPHER_WEP104;
 544
 545         return 0;
 546 }
 547
 548 int rtw_parse_wpa_ie23a(u8* wpa_ie, int wpa_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
 549 {
 550         int i, ret = _SUCCESS;
 551         int left, count;
 552         u8 *pos;
 553         u8 SUITE_1X[4] = {0x00, 0x50, 0xf2, 1};
 554
 555         if (wpa_ie_len <= 0) {
 556                 /* No WPA IE - fail silently */
 557                 return _FAIL;
 558         }
 559
 560         if ((*wpa_ie != _WPA_IE_ID_) || (*(wpa_ie+1) != (u8)(wpa_ie_len - 2)) ||
 561             memcmp(wpa_ie + 2, RTW_WPA_OUI23A_TYPE, WPA_SELECTOR_LEN)) {
 562                 return _FAIL;
 563         }
 564
 565         pos = wpa_ie;
 566
 567         pos += 8;
 568         left = wpa_ie_len - 8;
 569
 570         /* group_cipher */
 571         if (left >= WPA_SELECTOR_LEN) {
 572
 573                 *group_cipher = rtw_get_wpa_cipher_suite23a(pos);
 574
 575                 pos += WPA_SELECTOR_LEN;
 576                 left -= WPA_SELECTOR_LEN;
 577         } else if (left > 0) {
 578                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_,
 579                          ("%s: ie length mismatch, %u too much",
 580                           __func__, left));
 581
 582                 return _FAIL;
 583         }
 584
 585         /* pairwise_cipher */
 586         if (left >= 2) {
 587                 /* count = le16_to_cpu(*(u16*)pos); */
 588                 count = get_unaligned_le16(pos);
 589                 pos += 2;
 590                 left -= 2;
 591
 592                 if (count == 0 || left < count * WPA_SELECTOR_LEN) {
 593                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_,
 594                                  ("%s: ie count botch (pairwise), "
 595                                   "count %u left %u", __func__,
 596                                   count, left));
 597                         return _FAIL;
 598                 }
 599
 600                 for (i = 0; i < count; i++) {
 601                         *pairwise_cipher |= rtw_get_wpa_cipher_suite23a(pos);
 602
 603                         pos += WPA_SELECTOR_LEN;
 604                         left -= WPA_SELECTOR_LEN;
 605                 }
 606         } else if (left == 1) {
 607                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_,
 608                          ("%s: ie too short (for key mgmt)", __func__));
 609                 return _FAIL;
 610         }
 611
 612         if (is_8021x) {
 613                 if (left >= 6) {
 614                         pos += 2;
 615                         if (!memcmp(pos, SUITE_1X, 4)) {
 616                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
 617                                          ("%s : there has 802.1x auth\n",
 618                                           __func__));
 619                                 *is_8021x = 1;
 620                         }
 621                 }
 622         }
 623
 624         return ret;
 625 }
 626
 627 int rtw_parse_wpa2_ie23a(u8* rsn_ie, int rsn_ie_len, int *group_cipher,
 628                       int *pairwise_cipher, int *is_8021x)
 629 {
 630         int i, ret = _SUCCESS;
 631         int left, count;
 632         u8 *pos;
 633         u8 SUITE_1X[4] = {0x00, 0x0f, 0xac, 0x01};
 634
 635         if (rsn_ie_len <= 0) {
 636                 /* No RSN IE - fail silently */
 637                 return _FAIL;
 638         }
 639
 640         if ((*rsn_ie!= _WPA2_IE_ID_) || (*(rsn_ie+1) != (u8)(rsn_ie_len - 2))) {
 641                 return _FAIL;
 642         }
 643
 644         pos = rsn_ie;
 645         pos += 4;
 646         left = rsn_ie_len - 4;
 647
 648         /* group_cipher */
 649         if (left >= RSN_SELECTOR_LEN) {
 650                 *group_cipher = rtw_get_wpa2_cipher_suite23a(pos);
 651
 652                 pos += RSN_SELECTOR_LEN;
 653                 left -= RSN_SELECTOR_LEN;
 654         } else if (left > 0) {
 655                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_,
 656                          ("%s: ie length mismatch, %u too much",
 657                           __func__, left));
 658                 return _FAIL;
 659         }
 660
 661         /* pairwise_cipher */
 662         if (left >= 2) {
 663                 /* count = le16_to_cpu(*(u16*)pos); */
 664                 count = get_unaligned_le16(pos);
 665                 pos += 2;
 666                 left -= 2;
 667
 668                 if (count == 0 || left < count * RSN_SELECTOR_LEN) {
 669                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_,
 670                                  ("%s: ie count botch (pairwise), "
 671                                   "count %u left %u",
 672                                   __func__, count, left));
 673                         return _FAIL;
 674                 }
 675
 676                 for (i = 0; i < count; i++) {
 677                         *pairwise_cipher |= rtw_get_wpa2_cipher_suite23a(pos);
 678
 679                         pos += RSN_SELECTOR_LEN;
 680                         left -= RSN_SELECTOR_LEN;
 681                 }
 682         } else if (left == 1) {
 683                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_,
 684                          ("%s: ie too short (for key mgmt)",  __func__));
 685
 686                 return _FAIL;
 687         }
 688
 689         if (is_8021x) {
 690                 if (left >= 6) {
 691                         pos += 2;
 692                         if (!memcmp(pos, SUITE_1X, 4)) {
 693                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
 694                                          ("%s (): there has 802.1x auth\n",
 695                                           __func__));
 696                                 *is_8021x = 1;
 697                         }
 698                 }
 699         }
 700
 701         return ret;
 702 }
 703
 704 int rtw_get_sec_ie23a(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len,
 705                    u8 *wpa_ie, u16 *wpa_len)
 706 {
 707         u8 authmode, sec_idx, i;
 708         u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
 709         uint cnt;
 710
 711
 712
 713         /* Search required WPA or WPA2 IE and copy to sec_ie[ ] */
 714
 715         cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
 716
 717         sec_idx = 0;
 718
 719         while(cnt < in_len) {
 720                 authmode = in_ie[cnt];
 721
 722                 if ((authmode == _WPA_IE_ID_) &&
 723                     !memcmp(&in_ie[cnt+2], &wpa_oui[0], 4)) {
 724                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
 725                                          ("\n rtw_get_wpa_ie23a: sec_idx =%d "
 726                                           "in_ie[cnt+1]+2 =%d\n",
 727                                           sec_idx, in_ie[cnt + 1] + 2));
 728
 729                                 if (wpa_ie) {
 730                                 memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt+1]+2);
 731
 732                                 for (i = 0; i < (in_ie[cnt + 1] + 2); i = i + 8) {
 733                                         RT_TRACE(_module_rtl871x_mlme_c_,
 734                                                  _drv_info_,
 735                                                  ("\n %2x,%2x,%2x,%2x,%2x,%2x,"
 736                                                   "%2x,%2x\n", wpa_ie[i],
 737                                                   wpa_ie[i + 1], wpa_ie[i + 2],
 738                                                   wpa_ie[i + 3], wpa_ie[i + 4],
 739                                                   wpa_ie[i + 5], wpa_ie[i + 6],
 740                                                   wpa_ie[i + 7]));
 741                                         }
 742                                 }
 743
 744                                 *wpa_len = in_ie[cnt + 1] + 2;
 745                                 cnt += in_ie[cnt + 1] + 2;  /* get next */
 746                 } else {
 747                         if (authmode == _WPA2_IE_ID_) {
 748                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
 749                                          ("\n get_rsn_ie: sec_idx =%d in_ie"
 750                                           "[cnt+1]+2 =%d\n", sec_idx,
 751                                           in_ie[cnt + 1] + 2));
 752
 753                                 if (rsn_ie) {
 754                                 memcpy(rsn_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
 755
 756                                 for (i = 0; i < (in_ie[cnt + 1] + 2); i = i + 8) {
 757                                         RT_TRACE(_module_rtl871x_mlme_c_,
 758                                                  _drv_info_,
 759                                                  ("\n %2x,%2x,%2x,%2x,%2x,%2x,"
 760                                                   "%2x,%2x\n", rsn_ie[i],
 761                                                   rsn_ie[i + 1], rsn_ie[i + 2],
 762                                                   rsn_ie[i + 3], rsn_ie[i + 4],
 763                                                   rsn_ie[i + 5], rsn_ie[i + 6],
 764                                                   rsn_ie[i + 7]));
 765                                         }
 766                                 }
 767
 768                                 *rsn_len = in_ie[cnt + 1] + 2;
 769                                 cnt += in_ie[cnt + 1] + 2;  /* get next */
 770                         } else {
 771                                 cnt += in_ie[cnt + 1] + 2;   /* get next */
 772                         }
 773                 }
 774         }
 775
 776
 777
 778         return *rsn_len + *wpa_len;
 779 }
 780
 781 u8 rtw_is_wps_ie23a(u8 *ie_ptr, uint *wps_ielen)
 782 {
 783         u8 match = false;
 784         u8 eid, wps_oui[4]= {0x0, 0x50, 0xf2, 0x04};
 785
 786         if (!ie_ptr)
 787                 return match;
 788
 789         eid = ie_ptr[0];
 790
 791         if ((eid == _WPA_IE_ID_) && !memcmp(&ie_ptr[2], wps_oui, 4)) {
 792                 /* DBG_8723A("==> found WPS_IE.....\n"); */
 793                 *wps_ielen = ie_ptr[1] + 2;
 794                 match = true;
 795         }
 796         return match;
 797 }
 798
 799 /**
 800  * rtw_get_wps_ie23a - Search WPS IE from a series of IEs
 801  * @in_ie: Address of IEs to search
 802  * @in_len: Length limit from in_ie
 803  * @wps_ie: If not NULL and WPS IE is found, WPS IE will be copied to the
 804  *          buf starting from wps_ie
 805  * @wps_ielen: If not NULL and WPS IE is found, will set to the length of
 806  *             the entire WPS IE
 807  *
 808  * Returns: The address of the WPS IE found, or NULL
 809  */
 810 u8 *rtw_get_wps_ie23a(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
 811 {
 812         uint cnt;
 813         u8 *wpsie_ptr = NULL;
 814         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 815
 816         if (wps_ielen)
 817                 *wps_ielen = 0;
 818
 819         if (!in_ie || in_len <= 0)
 820                 return wpsie_ptr;
 821
 822         cnt = 0;
 823
 824         while (cnt < in_len) {
 825                 eid = in_ie[cnt];
 826
 827                 if ((eid == _WPA_IE_ID_) && !memcmp(&in_ie[cnt+2], wps_oui, 4)) {
 828                         wpsie_ptr = &in_ie[cnt];
 829
 830                         if (wps_ie)
 831                                 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
 832
 833                         if (wps_ielen)
 834                                 *wps_ielen = in_ie[cnt + 1] + 2;
 835
 836                         cnt += in_ie[cnt + 1] + 2;
 837
 838                         break;
 839                 } else {
 840                         cnt += in_ie[cnt + 1] + 2; /* goto next */
 841                 }
 842         }
 843
 844         return wpsie_ptr;
 845 }
 846
 847 /**
 848  * rtw_get_wps_attr23a - Search a specific WPS attribute from a given WPS IE
 849  * @wps_ie: Address of WPS IE to search
 850  * @wps_ielen: Length limit from wps_ie
 851  * @target_attr_id: The attribute ID of WPS attribute to search
 852  * @buf_attr: If not NULL and the WPS attribute is found, WPS attribute
 853  *            will be copied to the buf starting from buf_attr
 854  * @len_attr: If not NULL and the WPS attribute is found, will set to the
 855  *            length of the entire WPS attribute
 856  *
 857  * Returns: the address of the specific WPS attribute found, or NULL
 858  */
 859 u8 *rtw_get_wps_attr23a(u8 *wps_ie, uint wps_ielen, u16 target_attr_id,
 860                      u8 *buf_attr, u32 *len_attr)
 861 {
 862         u8 *attr_ptr = NULL;
 863         u8 * target_attr_ptr = NULL;
 864         u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
 865
 866         if (len_attr)
 867                 *len_attr = 0;
 868
 869         if ((wps_ie[0] != _VENDOR_SPECIFIC_IE_) ||
 870             memcmp(wps_ie + 2, wps_oui, 4)) {
 871                 return attr_ptr;
 872         }
 873
 874         /*  6 = 1(Element ID) + 1(Length) + 4(WPS OUI) */
 875         attr_ptr = wps_ie + 6; /* goto first attr */
 876
 877         while (attr_ptr - wps_ie < wps_ielen) {
 878                 /*  4 = 2(Attribute ID) + 2(Length) */
 879                 u16 attr_id = get_unaligned_be16(attr_ptr);
 880                 u16 attr_data_len = get_unaligned_be16(attr_ptr + 2);
 881                 u16 attr_len = attr_data_len + 4;
 882
 883                 /* DBG_8723A("%s attr_ptr:%p, id:%u, length:%u\n", __func__, attr_ptr, attr_id, attr_data_len); */
 884                 if (attr_id == target_attr_id) {
 885                         target_attr_ptr = attr_ptr;
 886
 887                         if (buf_attr)
 888                                 memcpy(buf_attr, attr_ptr, attr_len);
 889
 890                         if (len_attr)
 891                                 *len_attr = attr_len;
 892
 893                         break;
 894                 } else {
 895                         attr_ptr += attr_len; /* goto next */
 896                 }
 897         }
 898
 899         return target_attr_ptr;
 900 }
 901
 902 /**
 903  * rtw_get_wps_attr_content23a - Search a specific WPS attribute content
 904  * from a given WPS IE
 905  * @wps_ie: Address of WPS IE to search
 906  * @wps_ielen: Length limit from wps_ie
 907  * @target_attr_id: The attribute ID of WPS attribute to search
 908  * @buf_content: If not NULL and the WPS attribute is found, WPS attribute
 909  *               content will be copied to the buf starting from buf_content
 910  * @len_content: If not NULL and the WPS attribute is found, will set to the
 911  *               length of the WPS attribute content
 912  *
 913  * Returns: the address of the specific WPS attribute content found, or NULL
 914  */
 915 u8 *rtw_get_wps_attr_content23a(u8 *wps_ie, uint wps_ielen, u16 target_attr_id,
 916                                 u8 *buf_content, uint *len_content)
 917 {
 918         u8 *attr_ptr;
 919         u32 attr_len;
 920
 921         if (len_content)
 922                 *len_content = 0;
 923
 924         attr_ptr = rtw_get_wps_attr23a(wps_ie, wps_ielen, target_attr_id,
 925                                     NULL, &attr_len);
 926
 927         if (attr_ptr && attr_len) {
 928                 if (buf_content)
 929                         memcpy(buf_content, attr_ptr + 4, attr_len - 4);
 930
 931                 if (len_content)
 932                         *len_content = attr_len - 4;
 933
 934                 return attr_ptr + 4;
 935         }
 936
 937         return NULL;
 938 }
 939
 940 static int
 941 rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
 942                                      struct rtw_ieee802_11_elems *elems,
 943                                      int show_errors)
 944 {
 945         unsigned int oui;
 946
 947         /* first 3 bytes in vendor specific information element are the IEEE
 948          * OUI of the vendor. The following byte is used a vendor specific
 949          * sub-type. */
 950         if (elen < 4) {
 951                 if (show_errors) {
 952                         DBG_8723A("short vendor specific "
 953                                    "information element ignored (len =%lu)\n",
 954                                    (unsigned long) elen);
 955                 }
 956                 return -1;
 957         }
 958
 959         oui = RTW_GET_BE24(pos);
 960         switch (oui) {
 961         case WLAN_OUI_MICROSOFT:
 962                 /* Microsoft/Wi-Fi information elements are further typed and
 963                  * subtyped */
 964                 switch (pos[3]) {
 965                 case 1:
 966                         /* Microsoft OUI (00:50:F2) with OUI Type 1:
 967                          * real WPA information element */
 968                         elems->wpa_ie = pos;
 969                         elems->wpa_ie_len = elen;
 970                         break;
 971                 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
 972                         if (elen < 5) {
 973                                 DBG_8723A("short WME "
 974                                            "information element ignored "
 975                                            "(len =%lu)\n",
 976                                            (unsigned long) elen);
 977                                 return -1;
 978                         }
 979                         switch (pos[4]) {
 980                         case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
 981                         case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
 982                                 elems->wme = pos;
 983                                 elems->wme_len = elen;
 984                                 break;
 985                         case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
 986                                 elems->wme_tspec = pos;
 987                                 elems->wme_tspec_len = elen;
 988                                 break;
 989                         default:
 990                                 DBG_8723A("unknown WME "
 991                                            "information element ignored "
 992                                            "(subtype =%d len =%lu)\n",
 993                                            pos[4], (unsigned long) elen);
 994                                 return -1;
 995                         }
 996                         break;
 997                 case 4:
 998                         /* Wi-Fi Protected Setup (WPS) IE */
 999                         elems->wps_ie = pos;
1000                         elems->wps_ie_len = elen;
1001                         break;
1002                 default:
1003                         DBG_8723A("Unknown Microsoft "
1004                                    "information element ignored "
1005                                    "(type =%d len =%lu)\n",
1006                                    pos[3], (unsigned long) elen);
1007                         return -1;
1008                 }
1009                 break;
1010
1011         case OUI_BROADCOM:
1012                 switch (pos[3]) {
1013                 case VENDOR_HT_CAPAB_OUI_TYPE:
1014                         elems->vendor_ht_cap = pos;
1015                         elems->vendor_ht_cap_len = elen;
1016                         break;
1017                 default:
1018                         DBG_8723A("Unknown Broadcom "
1019                                    "information element ignored "
1020                                    "(type =%d len =%lu)\n",
1021                                    pos[3], (unsigned long) elen);
1022                         return -1;
1023                 }
1024                 break;
1025
1026         default:
1027                 DBG_8723A("unknown vendor specific information "
1028                            "element ignored (vendor OUI %02x:%02x:%02x "
1029                            "len =%lu)\n",
1030                            pos[0], pos[1], pos[2], (unsigned long) elen);
1031                 return -1;
1032         }
1033
1034         return 0;
1035 }
1036
1037 /**
1038  * ieee802_11_parse_elems - Parse information elements in management frames
1039  * @start: Pointer to the start of IEs
1040  * @len: Length of IE buffer in octets
1041  * @elems: Data structure for parsed elements
1042  * @show_errors: Whether to show parsing errors in debug log
1043  * Returns: Parsing result
1044  */
1045 enum parse_res rtw_ieee802_11_parse_elems23a(u8 *start, uint len,
1046                                 struct rtw_ieee802_11_elems *elems,
1047                                 int show_errors)
1048 {
1049         uint left = len;
1050         u8 *pos = start;
1051         int unknown = 0;
1052
1053         memset(elems, 0, sizeof(*elems));
1054
1055         while (left >= 2) {
1056                 u8 id, elen;
1057
1058                 id = *pos++;
1059                 elen = *pos++;
1060                 left -= 2;
1061
1062                 if (elen > left) {
1063                         if (show_errors) {
1064                                 DBG_8723A("IEEE 802.11 element "
1065                                            "parse failed (id =%d elen =%d "
1066                                            "left =%lu)\n",
1067                                            id, elen, (unsigned long) left);
1068                         }
1069                         return ParseFailed;
1070                 }
1071
1072                 switch (id) {
1073                 case WLAN_EID_SSID:
1074                         elems->ssid = pos;
1075                         elems->ssid_len = elen;
1076                         break;
1077                 case WLAN_EID_SUPP_RATES:
1078                         elems->supp_rates = pos;
1079                         elems->supp_rates_len = elen;
1080                         break;
1081                 case WLAN_EID_FH_PARAMS:
1082                         elems->fh_params = pos;
1083                         elems->fh_params_len = elen;
1084                         break;
1085                 case WLAN_EID_DS_PARAMS:
1086                         elems->ds_params = pos;
1087                         elems->ds_params_len = elen;
1088                         break;
1089                 case WLAN_EID_CF_PARAMS:
1090                         elems->cf_params = pos;
1091                         elems->cf_params_len = elen;
1092                         break;
1093                 case WLAN_EID_TIM:
1094                         elems->tim = pos;
1095                         elems->tim_len = elen;
1096                         break;
1097                 case WLAN_EID_IBSS_PARAMS:
1098                         elems->ibss_params = pos;
1099                         elems->ibss_params_len = elen;
1100                         break;
1101                 case WLAN_EID_CHALLENGE:
1102                         elems->challenge = pos;
1103                         elems->challenge_len = elen;
1104                         break;
1105                 case WLAN_EID_ERP_INFO:
1106                         elems->erp_info = pos;
1107                         elems->erp_info_len = elen;
1108                         break;
1109                 case WLAN_EID_EXT_SUPP_RATES:
1110                         elems->ext_supp_rates = pos;
1111                         elems->ext_supp_rates_len = elen;
1112                         break;
1113                 case WLAN_EID_VENDOR_SPECIFIC:
1114                         if (rtw_ieee802_11_parse_vendor_specific(pos, elen,
1115                                                                  elems,
1116                                                                  show_errors))
1117                                 unknown++;
1118                         break;
1119                 case WLAN_EID_RSN:
1120                         elems->rsn_ie = pos;
1121                         elems->rsn_ie_len = elen;
1122                         break;
1123                 case WLAN_EID_PWR_CAPABILITY:
1124                         elems->power_cap = pos;
1125                         elems->power_cap_len = elen;
1126                         break;
1127                 case WLAN_EID_SUPPORTED_CHANNELS:
1128                         elems->supp_channels = pos;
1129                         elems->supp_channels_len = elen;
1130                         break;
1131                 case WLAN_EID_MOBILITY_DOMAIN:
1132                         elems->mdie = pos;
1133                         elems->mdie_len = elen;
1134                         break;
1135                 case WLAN_EID_FAST_BSS_TRANSITION:
1136                         elems->ftie = pos;
1137                         elems->ftie_len = elen;
1138                         break;
1139                 case WLAN_EID_TIMEOUT_INTERVAL:
1140                         elems->timeout_int = pos;
1141                         elems->timeout_int_len = elen;
1142                         break;
1143                 case WLAN_EID_HT_CAPABILITY:
1144                         elems->ht_capabilities = pos;
1145                         elems->ht_capabilities_len = elen;
1146                         break;
1147                 case WLAN_EID_HT_OPERATION:
1148                         elems->ht_operation = pos;
1149                         elems->ht_operation_len = elen;
1150                         break;
1151                 default:
1152                         unknown++;
1153                         if (!show_errors)
1154                                 break;
1155                         DBG_8723A("IEEE 802.11 element parse "
1156                                    "ignored unknown element (id =%d elen =%d)\n",
1157                                    id, elen);
1158                         break;
1159                 }
1160
1161                 left -= elen;
1162                 pos += elen;
1163         }
1164
1165         if (left)
1166                 return ParseFailed;
1167
1168         return unknown ? ParseUnknown : ParseOK;
1169 }
1170
1171 static u8 key_char2num(u8 ch)
1172 {
1173         if ((ch >= '0') && (ch <= '9'))
1174                 return ch - '0';
1175         else if ((ch >= 'a') && (ch <= 'f'))
1176                 return ch - 'a' + 10;
1177         else if ((ch >= 'A') && (ch <= 'F'))
1178                 return ch - 'A' + 10;
1179         else
1180                 return 0xff;
1181 }
1182
1183 u8 str_2char2num23a(u8 hch, u8 lch)
1184 {
1185         return (key_char2num(hch) * 10) + key_char2num(lch);
1186 }
1187
1188 u8 key_2char2num23a(u8 hch, u8 lch)
1189 {
1190         return (key_char2num(hch) << 4) | key_char2num(lch);
1191 }
1192
1193 void rtw_macaddr_cfg23a(u8 *mac_addr)
1194 {
1195         u8 mac[ETH_ALEN];
1196         if (!mac_addr)
1197                 return;
1198
1199         memcpy(mac, mac_addr, ETH_ALEN);
1200
1201         if (is_broadcast_ether_addr(mac) || is_zero_ether_addr(mac)) {
1202                 mac[0] = 0x00;
1203                 mac[1] = 0xe0;
1204                 mac[2] = 0x4c;
1205                 mac[3] = 0x87;
1206                 mac[4] = 0x00;
1207                 mac[5] = 0x00;
1208                 /*  use default mac addresss */
1209                 memcpy(mac_addr, mac, ETH_ALEN);
1210                 DBG_8723A("MAC Address from efuse error, assign default "
1211                           "one !!!\n");
1212         }
1213         DBG_8723A("rtw_macaddr_cfg23a MAC Address  = "MAC_FMT"\n",
1214                   MAC_ARG(mac_addr));
1215 }
1216
1217 void dump_ies23a(u8 *buf, u32 buf_len) {
1218         u8* pos = (u8*)buf;
1219         u8 id, len;
1220
1221         while (pos-buf <= buf_len) {
1222                 id = *pos;
1223                 len = *(pos + 1);
1224
1225                 DBG_8723A("%s ID:%u, LEN:%u\n", __func__, id, len);
1226 #ifdef CONFIG_8723AU_P2P
1227                 dump_p2p_ie23a(pos, len);
1228 #endif
1229                 dump_wps_ie23a(pos, len);
1230
1231                 pos += (2 + len);
1232         }
1233 }
1234
1235 void dump_wps_ie23a(u8 *ie, u32 ie_len) {
1236         u8* pos = (u8*)ie;
1237         u16 id;
1238         u16 len;
1239
1240         u8 *wps_ie;
1241         uint wps_ielen;
1242
1243         wps_ie = rtw_get_wps_ie23a(ie, ie_len, NULL, &wps_ielen);
1244         if (wps_ie != ie || wps_ielen == 0)
1245                 return;
1246
1247         pos+= 6;
1248         while (pos-ie < ie_len) {
1249                 id = get_unaligned_be16(pos);
1250                 len = get_unaligned_be16(pos + 2);
1251
1252                 DBG_8723A("%s ID:0x%04x, LEN:%u\n", __func__, id, len);
1253
1254                 pos += (4 + len);
1255         }
1256 }
1257
1258 #ifdef CONFIG_8723AU_P2P
1259 void dump_p2p_ie23a(u8 *ie, u32 ie_len) {
1260         u8* pos = (u8*)ie;
1261         u8 id;
1262         u16 len;
1263
1264         u8 *p2p_ie;
1265         uint p2p_ielen;
1266
1267         p2p_ie = rtw_get_p2p_ie23a(ie, ie_len, NULL, &p2p_ielen);
1268         if (p2p_ie != ie || p2p_ielen == 0)
1269                 return;
1270
1271         pos += 6;
1272         while (pos-ie < ie_len) {
1273                 id = *pos;
1274                 len = get_unaligned_le16(pos+1);
1275
1276                 DBG_8723A("%s ID:%u, LEN:%u\n", __func__, id, len);
1277
1278                 pos+= (3+len);
1279         }
1280 }
1281
1282 /**
1283  * rtw_get_p2p_ie23a - Search P2P IE from a series of IEs
1284  * @in_ie: Address of IEs to search
1285  * @in_len: Length limit from in_ie
1286  * @p2p_ie: If not NULL and P2P IE is found, P2P IE will be copied to the
1287  *          buf starting from p2p_ie
1288  * @p2p_ielen: If not NULL and P2P IE is found, will set to the length of
1289  *             the entire P2P IE
1290  *
1291  * Returns: The address of the P2P IE found, or NULL
1292  */
1293 u8 *rtw_get_p2p_ie23a(u8 *in_ie, int in_len, u8 *p2p_ie, uint *p2p_ielen)
1294 {
1295         uint cnt = 0;
1296         u8 *p2p_ie_ptr;
1297         u8 eid, p2p_oui[4]={0x50, 0x6F, 0x9A, 0x09};
1298
1299         if (p2p_ielen)
1300                 *p2p_ielen = 0;
1301
1302         while (cnt<in_len) {
1303                 eid = in_ie[cnt];
1304                 if ((in_len < 0) || (cnt > MAX_IE_SZ)) {
1305                         dump_stack();
1306                         return NULL;
1307                 }
1308                 if ((eid == _VENDOR_SPECIFIC_IE_) &&
1309                     !memcmp(&in_ie[cnt + 2], p2p_oui, 4)) {
1310                         p2p_ie_ptr = in_ie + cnt;
1311
1312                         if (p2p_ie != NULL) {
1313                                 memcpy(p2p_ie, &in_ie[cnt],
1314                                        in_ie[cnt + 1] + 2);
1315                         }
1316
1317                         if (p2p_ielen != NULL) {
1318                                 *p2p_ielen = in_ie[cnt + 1] + 2;
1319                         }
1320
1321                         return p2p_ie_ptr;
1322
1323                         break;
1324                 } else {
1325                         cnt += in_ie[cnt + 1] + 2; /* goto next */
1326                 }
1327         }
1328
1329         return NULL;
1330 }
1331
1332 /**
1333  * rtw_get_p2p_attr23a - Search a specific P2P attribute from a given P2P IE
1334  * @p2p_ie: Address of P2P IE to search
1335  * @p2p_ielen: Length limit from p2p_ie
1336  * @target_attr_id: The attribute ID of P2P attribute to search
1337  * @buf_attr: If not NULL and the P2P attribute is found, P2P attribute will
1338  *            be copied to the buf starting from buf_attr
1339  * @len_attr: If not NULL and the P2P attribute is found, will set to the
1340  *            length of the entire P2P attribute
1341  *
1342  * Returns: the address of the specific WPS attribute found, or NULL
1343  */
1344 u8 *rtw_get_p2p_attr23a(u8 *p2p_ie, uint p2p_ielen, u8 target_attr_id,
1345                      u8 *buf_attr, u32 *len_attr)
1346 {
1347         u8 *attr_ptr = NULL;
1348         u8 *target_attr_ptr = NULL;
1349         u8 p2p_oui[4]={0x50, 0x6F, 0x9A, 0x09};
1350
1351         if (len_attr)
1352                 *len_attr = 0;
1353
1354         if (!p2p_ie || (p2p_ie[0] != _VENDOR_SPECIFIC_IE_) ||
1355             memcmp(p2p_ie + 2, p2p_oui, 4)) {
1356                 return attr_ptr;
1357         }
1358
1359         /*  6 = 1(Element ID) + 1(Length) + 3 (OUI) + 1(OUI Type) */
1360         attr_ptr = p2p_ie + 6; /* goto first attr */
1361
1362         while (attr_ptr - p2p_ie < p2p_ielen) {
1363                 /*  3 = 1(Attribute ID) + 2(Length) */
1364                 u8 attr_id = *attr_ptr;
1365                 u16 attr_data_len = get_unaligned_le16(attr_ptr + 1);
1366                 u16 attr_len = attr_data_len + 3;
1367
1368                 /* DBG_8723A("%s attr_ptr:%p, id:%u, length:%u\n", __func__, attr_ptr, attr_id, attr_data_len); */
1369                 if (attr_id == target_attr_id) {
1370                         target_attr_ptr = attr_ptr;
1371
1372                         if (buf_attr)
1373                                 memcpy(buf_attr, attr_ptr, attr_len);
1374
1375                         if (len_attr)
1376                                 *len_attr = attr_len;
1377
1378                         break;
1379                 } else {
1380                         attr_ptr += attr_len; /* goto next */
1381                 }
1382         }
1383
1384         return target_attr_ptr;
1385 }
1386
1387 /**
1388  * rtw_get_p2p_attr23a_content - Search a specific P2P attribute content from
1389  * a given P2P IE
1390  * @p2p_ie: Address of P2P IE to search
1391  * @p2p_ielen: Length limit from p2p_ie
1392  * @target_attr_id: The attribute ID of P2P attribute to search
1393  * @buf_content: If not NULL and the P2P attribute is found, P2P attribute
1394  *               content will be copied to the buf starting from buf_content
1395  * @len_content: If not NULL and the P2P attribute is found, will set to the
1396  *               length of the P2P attribute content
1397  *
1398  * Returns: the address of the specific P2P attribute content found, or NULL
1399  */
1400 u8 *rtw_get_p2p_attr23a_content(u8 *p2p_ie, uint p2p_ielen, u8 target_attr_id,
1401                              u8 *buf_content, uint *len_content)
1402 {
1403         u8 *attr_ptr;
1404         u32 attr_len;
1405
1406         if (len_content)
1407                 *len_content = 0;
1408
1409         attr_ptr = rtw_get_p2p_attr23a(p2p_ie, p2p_ielen, target_attr_id,
1410                                     NULL, &attr_len);
1411
1412         if (attr_ptr && attr_len) {
1413                 if (buf_content)
1414                         memcpy(buf_content, attr_ptr + 3, attr_len - 3);
1415
1416                 if (len_content)
1417                         *len_content = attr_len - 3;
1418
1419                 return attr_ptr+3;
1420         }
1421
1422         return NULL;
1423 }
1424
1425 u32 rtw_set_p2p_attr_content23a(u8 *pbuf, u8 attr_id, u16 attr_len, u8 *pdata_attr)
1426 {
1427         u32 a_len;
1428
1429         *pbuf = attr_id;
1430
1431         /* u16*)(pbuf + 1) = cpu_to_le16(attr_len); */
1432         put_unaligned_le16(attr_len, pbuf + 1);
1433
1434         if (pdata_attr)
1435                 memcpy(pbuf + 3, pdata_attr, attr_len);
1436
1437         a_len = attr_len + 3;
1438
1439         return a_len;
1440 }
1441
1442 static uint rtw_p2p_attr_remove(u8 *ie, uint ielen_ori, u8 attr_id)
1443 {
1444         u8 *target_attr;
1445         u32 target_attr_len;
1446         uint ielen = ielen_ori;
1447
1448         while(1) {
1449                 target_attr = rtw_get_p2p_attr23a(ie, ielen, attr_id, NULL,
1450                                              &target_attr_len);
1451                 if (target_attr && target_attr_len) {
1452                         u8 *next_attr = target_attr+target_attr_len;
1453                         uint remain_len = ielen-(next_attr-ie);
1454                         /* dump_ies23a(ie, ielen); */
1455
1456                         memset(target_attr, 0, target_attr_len);
1457                         memcpy(target_attr, next_attr, remain_len);
1458                         memset(target_attr+remain_len, 0, target_attr_len);
1459                         *(ie + 1) -= target_attr_len;
1460                         ielen -= target_attr_len;
1461                 } else {
1462                         /* if (index>0) */
1463                         /*      dump_ies23a(ie, ielen); */
1464                         break;
1465                 }
1466         }
1467
1468         return ielen;
1469 }
1470
1471 void rtw_wlan_bssid_ex_remove_p2p_attr23a(struct wlan_bssid_ex *bss_ex, u8 attr_id)
1472 {
1473         u8 *p2p_ie;
1474         uint p2p_ielen, p2p_ielen_ori;
1475
1476         if ((p2p_ie = rtw_get_p2p_ie23a(bss_ex->IEs + _FIXED_IE_LENGTH_,
1477                                      bss_ex->IELength - _FIXED_IE_LENGTH_,
1478                                      NULL, &p2p_ielen_ori))) {
1479                 p2p_ielen = rtw_p2p_attr_remove(p2p_ie, p2p_ielen_ori, attr_id);
1480                 if (p2p_ielen != p2p_ielen_ori) {
1481                         u8 *next_ie_ori = p2p_ie+p2p_ielen_ori;
1482                         u8 *next_ie = p2p_ie+p2p_ielen;
1483                         uint remain_len;
1484                         remain_len = bss_ex->IELength-(next_ie_ori-bss_ex->IEs);
1485
1486                         memcpy(next_ie, next_ie_ori, remain_len);
1487                         memset(next_ie+remain_len, 0, p2p_ielen_ori-p2p_ielen);
1488                         bss_ex->IELength -= p2p_ielen_ori-p2p_ielen;
1489                 }
1490         }
1491 }
1492
1493 #endif /* CONFIG_8723AU_P2P */
1494
1495 #ifdef CONFIG_8723AU_P2P
1496 int rtw_get_wfd_ie(u8 *in_ie, int in_len, u8 *wfd_ie, uint *wfd_ielen)
1497 {
1498         int match;
1499         const u8 *ie;
1500
1501         match = 0;
1502
1503         if (in_len < 0)
1504                 return match;
1505
1506         ie = cfg80211_find_vendor_ie(0x506F9A, 0x0A, in_ie, in_len);
1507         if (ie && (ie[1] <= (MAX_WFD_IE_LEN - 2))) {
1508                 if (wfd_ie) {
1509                         *wfd_ielen = ie[1] + 2;
1510                         memcpy(wfd_ie, ie, ie[1] + 2);
1511                 } else
1512                         if (wfd_ielen)
1513                                 *wfd_ielen = 0;
1514
1515                 match = 1;
1516         }
1517
1518         return match;
1519 }
1520
1521 /*      attr_content: The output buffer, contains the "body field" of
1522         WFD attribute. */
1523 /*      attr_contentlen: The data length of the "body field" of WFD
1524         attribute. */
1525 int rtw_get_wfd_attr_content(u8 *wfd_ie, uint wfd_ielen, u8 target_attr_id,
1526                              u8 *attr_content, uint *attr_contentlen)
1527 {
1528         int match;
1529         uint cnt = 0;
1530         u8 attr_id, wfd_oui[4] = {0x50, 0x6F, 0x9A, 0x0A};
1531
1532         match = false;
1533
1534         if ((wfd_ie[0] != _VENDOR_SPECIFIC_IE_) ||
1535             memcmp(wfd_ie + 2, wfd_oui, 4)) {
1536                 return match;
1537         }
1538
1539         /*      1 (WFD IE) + 1 (Length) + 3 (OUI) + 1 (OUI Type) */
1540         cnt = 6;
1541         while (cnt < wfd_ielen) {
1542                 u16 attrlen = get_unaligned_be16(wfd_ie + cnt + 1);
1543
1544                 attr_id = wfd_ie[cnt];
1545                 if (attr_id == target_attr_id) {
1546                         /*      3 -> 1 byte for attribute ID field, 2
1547                                 bytes for length field */
1548                         if (attr_content)
1549                                 memcpy(attr_content, &wfd_ie[cnt + 3], attrlen);
1550
1551                         if (attr_contentlen)
1552                                 *attr_contentlen = attrlen;
1553
1554                         cnt += attrlen + 3;
1555
1556                         match = true;
1557                         break;
1558                 } else {
1559                         cnt += attrlen + 3; /* goto next */
1560                 }
1561         }
1562
1563         return match;
1564 }
1565 #endif /*  CONFIG_8723AU_P2P */
1566
1567 /* Baron adds to avoid FreeBSD warning */
1568 int ieee80211_is_empty_essid23a(const char *essid, int essid_len)
1569 {
1570         /* Single white space is for Linksys APs */
1571         if (essid_len == 1 && essid[0] == ' ')
1572                 return 1;
1573
1574         /* Otherwise, if the entire essid is 0, we assume it is hidden */
1575         while (essid_len) {
1576                 essid_len--;
1577                 if (essid[essid_len] != '\0')
1578                         return 0;
1579         }
1580
1581         return 1;
1582 }
1583
1584 static int rtw_get_cipher_info(struct wlan_network *pnetwork)
1585 {
1586         u32 wpa_ielen;
1587         unsigned char *pbuf;
1588         int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
1589         int ret = _FAIL;
1590         int r;
1591         pbuf = rtw_get_wpa_ie23a(&pnetwork->network.IEs[12], &wpa_ielen,
1592                               pnetwork->network.IELength - 12);
1593
1594         if (pbuf && (wpa_ielen > 0)) {
1595                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1596                          ("rtw_get_cipher_info: wpa_ielen: %d", wpa_ielen));
1597                 r = rtw_parse_wpa_ie23a(pbuf, wpa_ielen + 2, &group_cipher,
1598                                      &pairwise_cipher, &is8021x);
1599                 if (r == _SUCCESS) {
1600                         pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1601                         pnetwork->BcnInfo.group_cipher = group_cipher;
1602                         pnetwork->BcnInfo.is_8021x = is8021x;
1603                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1604                                  ("%s: pnetwork->pairwise_cipher: %d, is_"
1605                                   "8021x is %d", __func__,
1606                                   pnetwork->BcnInfo.pairwise_cipher,
1607                                   pnetwork->BcnInfo.is_8021x));
1608                         ret = _SUCCESS;
1609                 }
1610         } else {
1611                 pbuf = rtw_get_wpa2_ie23a(&pnetwork->network.IEs[12], &wpa_ielen,
1612                                        pnetwork->network.IELength - 12);
1613
1614                 if (pbuf && (wpa_ielen > 0)) {
1615                         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1616                                  ("get RSN IE\n"));
1617                         r = rtw_parse_wpa2_ie23a(pbuf, wpa_ielen + 2,
1618                                               &group_cipher, &pairwise_cipher,
1619                                               &is8021x);
1620                         if (r == _SUCCESS) {
1621                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1622                                          ("get RSN IE  OK!!!\n"));
1623                                 pnetwork->BcnInfo.pairwise_cipher =
1624                                         pairwise_cipher;
1625                                 pnetwork->BcnInfo.group_cipher = group_cipher;
1626                                 pnetwork->BcnInfo.is_8021x = is8021x;
1627                                 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1628                                          ("%s: pnetwork->pairwise_cipher: %d,"
1629                                           "pnetwork->group_cipher is %d, "
1630                                           "is_8021x is %d", __func__,
1631                                           pnetwork->BcnInfo.pairwise_cipher,
1632                                           pnetwork->BcnInfo.group_cipher,
1633                                           pnetwork->BcnInfo.is_8021x));
1634                                 ret = _SUCCESS;
1635                         }
1636                 }
1637         }
1638
1639         return ret;
1640 }
1641
1642 void rtw_get_bcn_info23a(struct wlan_network *pnetwork)
1643 {
1644         unsigned short cap = 0;
1645         u8 bencrypt = 0;
1646         /* u8 wpa_ie[255], rsn_ie[255]; */
1647         u16 wpa_len = 0, rsn_len = 0;
1648         struct HT_info_element *pht_info = NULL;
1649         struct ieee80211_ht_cap *pht_cap = NULL;
1650         unsigned int            len;
1651         unsigned char           *p;
1652
1653         memcpy(&cap, rtw_get_capability23a_from_ie(pnetwork->network.IEs), 2);
1654         cap = le16_to_cpu(cap);
1655         if (cap & WLAN_CAPABILITY_PRIVACY) {
1656                 bencrypt = 1;
1657                 pnetwork->network.Privacy = 1;
1658         } else {
1659                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
1660         }
1661         rtw_get_sec_ie23a(pnetwork->network.IEs, pnetwork->network.IELength,
1662                        NULL, &rsn_len, NULL, &wpa_len);
1663         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1664                  ("rtw_get_bcn_info23a: ssid =%s\n", pnetwork->network.Ssid.ssid));
1665         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1666                  ("rtw_get_bcn_info23a: wpa_len =%d rsn_len =%d\n",
1667                   wpa_len, rsn_len));
1668         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1669                  ("rtw_get_bcn_info23a: ssid =%s\n", pnetwork->network.Ssid.ssid));
1670         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1671                  ("rtw_get_bcn_info23a: wpa_len =%d rsn_len =%d\n",
1672                   wpa_len, rsn_len));
1673
1674         if (rsn_len > 0) {
1675                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
1676         } else if (wpa_len > 0) {
1677                 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
1678         } else {
1679                 if (bencrypt)
1680                         pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
1681         }
1682         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1683                  ("rtw_get_bcn_info23a: pnetwork->encryp_protocol is %x\n",
1684                   pnetwork->BcnInfo.encryp_protocol));
1685         RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
1686                  ("rtw_get_bcn_info23a: pnetwork->encryp_protocol is %x\n",
1687                   pnetwork->BcnInfo.encryp_protocol));
1688         rtw_get_cipher_info(pnetwork);
1689
1690         /* get bwmode and ch_offset */
1691         /* parsing HT_CAP_IE */
1692         p = rtw_get_ie23a(pnetwork->network.IEs + _FIXED_IE_LENGTH_,
1693                        _HT_CAPABILITY_IE_, &len,
1694                        pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1695         if (p && len > 0) {
1696                 pht_cap = (struct ieee80211_ht_cap *)(p + 2);
1697                 pnetwork->BcnInfo.ht_cap_info = pht_cap->cap_info;
1698         } else {
1699                 pnetwork->BcnInfo.ht_cap_info = 0;
1700         }
1701         /* parsing HT_INFO_IE */
1702         p = rtw_get_ie23a(pnetwork->network.IEs + _FIXED_IE_LENGTH_,
1703                        _HT_ADD_INFO_IE_, &len,
1704                        pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1705         if (p && len > 0) {
1706                 pht_info = (struct HT_info_element *)(p + 2);
1707                 pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
1708         } else {
1709                 pnetwork->BcnInfo.ht_info_infos_0 = 0;
1710         }
1711 }
1712
1713 /* show MCS rate, unit: 100Kbps */
1714 u16 rtw_mcs_rate23a(u8 rf_type, u8 bw_40MHz, u8 short_GI_20, u8 short_GI_40,
1715                  unsigned char * MCS_rate)
1716 {
1717         u16 max_rate = 0;
1718
1719         if (rf_type == RF_1T1R) {
1720                 if (MCS_rate[0] & BIT(7))
1721                         max_rate = (bw_40MHz) ? ((short_GI_40)?1500:1350):
1722                                 ((short_GI_20)?722:650);
1723                 else if (MCS_rate[0] & BIT(6))
1724                         max_rate = (bw_40MHz) ? ((short_GI_40)?1350:1215):
1725                                 ((short_GI_20)?650:585);
1726                 else if (MCS_rate[0] & BIT(5))
1727                         max_rate = (bw_40MHz) ? ((short_GI_40)?1200:1080):
1728                                 ((short_GI_20)?578:520);
1729                 else if (MCS_rate[0] & BIT(4))
1730                         max_rate = (bw_40MHz) ? ((short_GI_40)?900:810):
1731                                 ((short_GI_20)?433:390);
1732                 else if (MCS_rate[0] & BIT(3))
1733                         max_rate = (bw_40MHz) ? ((short_GI_40)?600:540):
1734                                 ((short_GI_20)?289:260);
1735                 else if (MCS_rate[0] & BIT(2))
1736                         max_rate = (bw_40MHz) ? ((short_GI_40)?450:405):
1737                                 ((short_GI_20)?217:195);
1738                 else if (MCS_rate[0] & BIT(1))
1739                         max_rate = (bw_40MHz) ? ((short_GI_40)?300:270):
1740                                 ((short_GI_20)?144:130);
1741                 else if (MCS_rate[0] & BIT(0))
1742                         max_rate = (bw_40MHz) ? ((short_GI_40)?150:135):
1743                                 ((short_GI_20)?72:65);
1744         } else {
1745                 if (MCS_rate[1]) {
1746                         if (MCS_rate[1] & BIT(7))
1747                                 max_rate = (bw_40MHz) ? ((short_GI_40)?3000:2700):((short_GI_20)?1444:1300);
1748                         else if (MCS_rate[1] & BIT(6))
1749                                 max_rate = (bw_40MHz) ? ((short_GI_40)?2700:2430):((short_GI_20)?1300:1170);
1750                         else if (MCS_rate[1] & BIT(5))
1751                                 max_rate = (bw_40MHz) ? ((short_GI_40)?2400:2160):((short_GI_20)?1156:1040);
1752                         else if (MCS_rate[1] & BIT(4))
1753                                 max_rate = (bw_40MHz) ? ((short_GI_40)?1800:1620):((short_GI_20)?867:780);
1754                         else if (MCS_rate[1] & BIT(3))
1755                                 max_rate = (bw_40MHz) ? ((short_GI_40)?1200:1080):((short_GI_20)?578:520);
1756                         else if (MCS_rate[1] & BIT(2))
1757                                 max_rate = (bw_40MHz) ? ((short_GI_40)?900:810):((short_GI_20)?433:390);
1758                         else if (MCS_rate[1] & BIT(1))
1759                                 max_rate = (bw_40MHz) ? ((short_GI_40)?600:540):((short_GI_20)?289:260);
1760                         else if (MCS_rate[1] & BIT(0))
1761                                 max_rate = (bw_40MHz) ? ((short_GI_40)?300:270):((short_GI_20)?144:130);
1762                 } else {
1763                         if (MCS_rate[0] & BIT(7))
1764                                 max_rate = (bw_40MHz) ? ((short_GI_40)?1500:1350):((short_GI_20)?722:650);
1765                         else if (MCS_rate[0] & BIT(6))
1766                                 max_rate = (bw_40MHz) ? ((short_GI_40)?1350:1215):((short_GI_20)?650:585);
1767                         else if (MCS_rate[0] & BIT(5))
1768                                 max_rate = (bw_40MHz) ? ((short_GI_40)?1200:1080):((short_GI_20)?578:520);
1769                         else if (MCS_rate[0] & BIT(4))
1770                                 max_rate = (bw_40MHz) ? ((short_GI_40)?900:810):((short_GI_20)?433:390);
1771                         else if (MCS_rate[0] & BIT(3))
1772                                 max_rate = (bw_40MHz) ? ((short_GI_40)?600:540):((short_GI_20)?289:260);
1773                         else if (MCS_rate[0] & BIT(2))
1774                                 max_rate = (bw_40MHz) ? ((short_GI_40)?450:405):((short_GI_20)?217:195);
1775                         else if (MCS_rate[0] & BIT(1))
1776                                 max_rate = (bw_40MHz) ? ((short_GI_40)?300:270):((short_GI_20)?144:130);
1777                         else if (MCS_rate[0] & BIT(0))
1778                                 max_rate = (bw_40MHz) ? ((short_GI_40)?150:135):((short_GI_20)?72:65);
1779                 }
1780         }
1781         return max_rate;
1782 }
1783
1784 int rtw_action_frame_parse23a(const u8 *frame, u32 frame_len, u8* category,
1785                            u8 *action)
1786 {
1787         const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr);
1788         u16 fc;
1789         u8 c, a = 0;
1790
1791         fc = le16_to_cpu(((struct ieee80211_hdr_3addr *)frame)->frame_control);
1792
1793         if ((fc & (IEEE80211_FCTL_FTYPE|IEEE80211_FCTL_STYPE)) !=
1794             (IEEE80211_FTYPE_MGMT|IEEE80211_STYPE_ACTION)) {
1795                 return false;
1796         }
1797
1798         c = frame_body[0];
1799
1800         switch (c) {
1801         case WLAN_CATEGORY_VENDOR_SPECIFIC: /* vendor-specific */
1802                 break;
1803         default:
1804                 a = frame_body[1];
1805         }
1806
1807         if (category)
1808                 *category = c;
1809         if (action)
1810                 *action = a;
1811
1812         return true;
1813 }
1814
1815 static const char *_action_public_str23a[] = {
1816         "ACT_PUB_BSSCOEXIST",
1817         "ACT_PUB_DSE_ENABLE",
1818         "ACT_PUB_DSE_DEENABLE",
1819         "ACT_PUB_DSE_REG_LOCATION",
1820         "ACT_PUB_EXT_CHL_SWITCH",
1821         "ACT_PUB_DSE_MSR_REQ",
1822         "ACT_PUB_DSE_MSR_RPRT",
1823         "ACT_PUB_MP",
1824         "ACT_PUB_DSE_PWR_CONSTRAINT",
1825         "ACT_PUB_VENDOR",
1826         "ACT_PUB_GAS_INITIAL_REQ",
1827         "ACT_PUB_GAS_INITIAL_RSP",
1828         "ACT_PUB_GAS_COMEBACK_REQ",
1829         "ACT_PUB_GAS_COMEBACK_RSP",
1830         "ACT_PUB_TDLS_DISCOVERY_RSP",
1831         "ACT_PUB_LOCATION_TRACK",
1832         "ACT_PUB_RSVD",
1833 };
1834
1835 const char *action_public_str23a(u8 action)
1836 {
1837         action = (action >= ACT_PUBLIC_MAX) ? ACT_PUBLIC_MAX : action;
1838         return _action_public_str23a[action];
1839 }