drivers/staging/rt2860/wpa.h

   1 /*
   2  *************************************************************************
   3  * Ralink Tech Inc.
   4  * 5F., No.36, Taiyuan St., Jhubei City,
   5  * Hsinchu County 302,
   6  * Taiwan, R.O.C.
   7  *
   8  * (c) Copyright 2002-2007, Ralink Technology, Inc.
   9  *
  10  * This program is free software; you can redistribute it and/or modify  *
  11  * it under the terms of the GNU General Public License as published by  *
  12  * the Free Software Foundation; either version 2 of the License, or     *
  13  * (at your option) any later version.                                   *
  14  *                                                                       *
  15  * This program is distributed in the hope that it will be useful,       *
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  18  * GNU General Public License for more details.                          *
  19  *                                                                       *
  20  * You should have received a copy of the GNU General Public License     *
  21  * along with this program; if not, write to the                         *
  22  * Free Software Foundation, Inc.,                                       *
  23  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  24  *                                                                       *
  25  *************************************************************************
  26
  27         Module Name:
  28         wpa.h
  29
  30         Abstract:
  31
  32         Revision History:
  33         Who                     When                    What
  34         --------        ----------              ----------------------------------------------
  35         Name            Date                    Modification logs
  36 */
  37
  38 #ifndef __WPA_H__
  39 #define __WPA_H__
  40
  41 /* EAPOL Key descripter frame format related length */
  42 #define LEN_KEY_DESC_NONCE                      32
  43 #define LEN_KEY_DESC_IV                         16
  44 #define LEN_KEY_DESC_RSC                        8
  45 #define LEN_KEY_DESC_ID                         8
  46 #define LEN_KEY_DESC_REPLAY                     8
  47 #define LEN_KEY_DESC_MIC                        16
  48
  49 /* The length is the EAPoL-Key frame except key data field. */
  50 /* Please refer to 802.11i-2004 ,Figure 43u in p.78 */
  51 #define LEN_EAPOL_KEY_MSG                       (sizeof(struct rt_key_descripter) - MAX_LEN_OF_RSNIE)
  52
  53 /* EAP Code Type. */
  54 #define EAP_CODE_REQUEST        1
  55 #define EAP_CODE_RESPONSE       2
  56 #define EAP_CODE_SUCCESS    3
  57 #define EAP_CODE_FAILURE    4
  58
  59 /* EAPOL frame Protocol Version */
  60 #define EAPOL_VER                                       1
  61 #define EAPOL_VER2                                      2
  62
  63 /* EAPOL-KEY Descriptor Type */
  64 #define WPA1_KEY_DESC                           0xfe
  65 #define WPA2_KEY_DESC               0x02
  66
  67 /* Key Descriptor Version of Key Information */
  68 #define DESC_TYPE_TKIP                          1
  69 #define DESC_TYPE_AES                           2
  70
  71 #define LEN_MSG1_2WAY               0x7f
  72 #define MAX_LEN_OF_EAP_HS           256
  73
  74 #define LEN_MASTER_KEY                          32
  75
  76 /* EAPOL EK, MK */
  77 #define LEN_EAP_EK                                      16
  78 #define LEN_EAP_MICK                            16
  79 #define LEN_EAP_KEY                                     ((LEN_EAP_EK)+(LEN_EAP_MICK))
  80 /* TKIP key related */
  81 #define LEN_PMKID                                       16
  82 #define LEN_TKIP_EK                                     16
  83 #define LEN_TKIP_RXMICK                         8
  84 #define LEN_TKIP_TXMICK                         8
  85 #define LEN_AES_EK                                      16
  86 #define LEN_AES_KEY                                     LEN_AES_EK
  87 #define LEN_TKIP_KEY                            ((LEN_TKIP_EK)+(LEN_TKIP_RXMICK)+(LEN_TKIP_TXMICK))
  88 #define TKIP_AP_TXMICK_OFFSET           ((LEN_EAP_KEY)+(LEN_TKIP_EK))
  89 #define TKIP_AP_RXMICK_OFFSET           (TKIP_AP_TXMICK_OFFSET+LEN_TKIP_TXMICK)
  90 #define TKIP_GTK_LENGTH                         ((LEN_TKIP_EK)+(LEN_TKIP_RXMICK)+(LEN_TKIP_TXMICK))
  91 #define LEN_PTK                                         ((LEN_EAP_KEY)+(LEN_TKIP_KEY))
  92 #define MIN_LEN_OF_GTK                          5
  93 #define LEN_PMK                                         32
  94 #define LEN_PMK_NAME                            16
  95 #define LEN_NONCE                                       32
  96
  97 /* RSN IE Length definition */
  98 #define MAX_LEN_OF_RSNIE                255
  99 #define MIN_LEN_OF_RSNIE                8
 100
 101 #define KEY_LIFETIME                            3600
 102
 103 /*EAP Packet Type */
 104 #define EAPPacket               0
 105 #define EAPOLStart              1
 106 #define EAPOLLogoff             2
 107 #define EAPOLKey                3
 108 #define EAPOLASFAlert   4
 109 #define EAPTtypeMax             5
 110
 111 #define EAPOL_MSG_INVALID       0
 112 #define EAPOL_PAIR_MSG_1        1
 113 #define EAPOL_PAIR_MSG_2        2
 114 #define EAPOL_PAIR_MSG_3        3
 115 #define EAPOL_PAIR_MSG_4        4
 116 #define EAPOL_GROUP_MSG_1       5
 117 #define EAPOL_GROUP_MSG_2       6
 118
 119 #define PAIRWISEKEY                                     1
 120 #define GROUPKEY                                        0
 121
 122 /* Retry timer counter initial value */
 123 #define PEER_MSG1_RETRY_TIMER_CTR           0
 124 #define PEER_MSG3_RETRY_TIMER_CTR           10
 125 #define GROUP_MSG1_RETRY_TIMER_CTR          20
 126
 127 /*#ifdef CONFIG_AP_SUPPORT */
 128 /* WPA mechanism retry timer interval */
 129 #define PEER_MSG1_RETRY_EXEC_INTV           1000        /* 1 sec */
 130 #define PEER_MSG3_RETRY_EXEC_INTV           3000        /* 3 sec */
 131 #define GROUP_KEY_UPDATE_EXEC_INTV          1000        /* 1 sec */
 132 #define PEER_GROUP_KEY_UPDATE_INIV                      2000    /* 2 sec */
 133
 134 #define ENQUEUE_EAPOL_START_TIMER                       200     /* 200 ms */
 135
 136 /* group rekey interval */
 137 #define TIME_REKEY                          0
 138 #define PKT_REKEY                           1
 139 #define DISABLE_REKEY                       2
 140 #define MAX_REKEY                           2
 141
 142 #define MAX_REKEY_INTER                     0x3ffffff
 143 /*#endif // CONFIG_AP_SUPPORT // */
 144
 145 #define GROUP_SUITE                                     0
 146 #define PAIRWISE_SUITE                          1
 147 #define AKM_SUITE                                       2
 148 #define PMKID_LIST                                      3
 149
 150 #define EAPOL_START_DISABLE                                     0
 151 #define EAPOL_START_PSK                                         1
 152 #define EAPOL_START_1X                                          2
 153
 154 #define MIX_CIPHER_WPA_TKIP_ON(x)       (((x) & 0x08) != 0)
 155 #define MIX_CIPHER_WPA_AES_ON(x)        (((x) & 0x04) != 0)
 156 #define MIX_CIPHER_WPA2_TKIP_ON(x)      (((x) & 0x02) != 0)
 157 #define MIX_CIPHER_WPA2_AES_ON(x)       (((x) & 0x01) != 0)
 158
 159 #ifndef ROUND_UP
 160 #define ROUND_UP(__x, __y) \
 161         (((unsigned long)((__x)+((__y)-1))) & ((unsigned long)~((__y)-1)))
 162 #endif
 163
 164 #define SET_u16_TO_ARRARY(_V, _LEN)             \
 165 {                                                                                       \
 166         _V[0] = (_LEN & 0xFF00) >> 8;                   \
 167         _V[1] = (_LEN & 0xFF);                                  \
 168 }
 169
 170 #define INC_u16_TO_ARRARY(_V, _LEN)                     \
 171 {                                                                                               \
 172         u16     var_len;                                                        \
 173                                                                                                 \
 174         var_len = (_V[0]<<8) | (_V[1]);                         \
 175         var_len += _LEN;                                                        \
 176                                                                                                 \
 177         _V[0] = (var_len & 0xFF00) >> 8;                        \
 178         _V[1] = (var_len & 0xFF);                                       \
 179 }
 180
 181 #define CONV_ARRARY_TO_u16(_V)  ((_V[0]<<8) | (_V[1]))
 182
 183 #define ADD_ONE_To_64BIT_VAR(_V)                \
 184 {                                                                               \
 185         u8      cnt = LEN_KEY_DESC_REPLAY;      \
 186         do                                                                      \
 187         {                                                                       \
 188                 cnt--;                                                  \
 189                 _V[cnt]++;                                              \
 190                 if (cnt == 0)                                   \
 191                         break;                                          \
 192         }while (_V[cnt] == 0);                          \
 193 }
 194
 195 #define IS_WPA_CAPABILITY(a)       (((a) >= Ndis802_11AuthModeWPA) && ((a) <= Ndis802_11AuthModeWPA1PSKWPA2PSK))
 196
 197 /* EAPOL Key Information definition within Key descriptor format */
 198 struct PACKED rt_key_info {
 199         u8 KeyMic:1;
 200         u8 Secure:1;
 201         u8 Error:1;
 202         u8 Request:1;
 203         u8 EKD_DL:1;            /* EKD for AP; DL for STA */
 204         u8 Rsvd:3;
 205         u8 KeyDescVer:3;
 206         u8 KeyType:1;
 207         u8 KeyIndex:2;
 208         u8 Install:1;
 209         u8 KeyAck:1;
 210 };
 211
 212 /* EAPOL Key descriptor format */
 213 struct PACKED rt_key_descripter {
 214         u8 Type;
 215         struct rt_key_info KeyInfo;
 216         u8 KeyLength[2];
 217         u8 ReplayCounter[LEN_KEY_DESC_REPLAY];
 218         u8 KeyNonce[LEN_KEY_DESC_NONCE];
 219         u8 KeyIv[LEN_KEY_DESC_IV];
 220         u8 KeyRsc[LEN_KEY_DESC_RSC];
 221         u8 KeyId[LEN_KEY_DESC_ID];
 222         u8 KeyMic[LEN_KEY_DESC_MIC];
 223         u8 KeyDataLen[2];
 224         u8 KeyData[MAX_LEN_OF_RSNIE];
 225 };
 226
 227 struct PACKED rt_eapol_packet {
 228         u8 ProVer;
 229         u8 ProType;
 230         u8 Body_Len[2];
 231         struct rt_key_descripter KeyDesc;
 232 };
 233
 234 /*802.11i D10 page 83 */
 235 struct PACKED rt_gtk_encap {
 236         u8 Kid:2;
 237         u8 tx:1;
 238         u8 rsv:5;
 239         u8 rsv1;
 240         u8 GTK[TKIP_GTK_LENGTH];
 241 };
 242
 243 struct PACKED rt_kde_encap {
 244         u8 Type;
 245         u8 Len;
 246         u8 OUI[3];
 247         u8 DataType;
 248         struct rt_gtk_encap GTKEncap;
 249 };
 250
 251 /* For WPA1 */
 252 struct PACKED rt_rsnie {
 253         u8 oui[4];
 254         u16 version;
 255         u8 mcast[4];
 256         u16 ucount;
 257         struct PACKED {
 258                 u8 oui[4];
 259         } ucast[1];
 260 };
 261
 262 /* For WPA2 */
 263 struct PACKED rt_rsnie2 {
 264         u16 version;
 265         u8 mcast[4];
 266         u16 ucount;
 267         struct PACKED {
 268                 u8 oui[4];
 269         } ucast[1];
 270 };
 271
 272 /* AKM Suite */
 273 struct PACKED rt_rsnie_auth {
 274         u16 acount;
 275         struct PACKED {
 276                 u8 oui[4];
 277         } auth[1];
 278 };
 279
 280 typedef union PACKED _RSN_CAPABILITIES {
 281         struct PACKED {
 282                 u16 PreAuth:1;
 283                 u16 No_Pairwise:1;
 284                 u16 PTKSA_R_Counter:2;
 285                 u16 GTKSA_R_Counter:2;
 286                 u16 Rsvd:10;
 287         } field;
 288         u16 word;
 289 } RSN_CAPABILITIES, *PRSN_CAPABILITIES;
 290
 291 struct PACKED rt_eap_hdr {
 292         u8 ProVer;
 293         u8 ProType;
 294         u8 Body_Len[2];
 295         u8 code;
 296         u8 identifier;
 297         u8 length[2];   /* including code and identifier, followed by length-2 octets of data */
 298 };
 299
 300 /* For supplicant state machine states. 802.11i Draft 4.1, p. 97 */
 301 /* We simplified it */
 302 typedef enum _WpaState {
 303         SS_NOTUSE,              /* 0 */
 304         SS_START,               /* 1 */
 305         SS_WAIT_MSG_3,          /* 2 */
 306         SS_WAIT_GROUP,          /* 3 */
 307         SS_FINISH,              /* 4 */
 308         SS_KEYUPDATE,           /* 5 */
 309 } WPA_STATE;
 310
 311 /* */
 312 /*      The definition of the cipher combination */
 313 /* */
 314 /*       bit3   bit2  bit1   bit0 */
 315 /*      +------------+------------+ */
 316 /*      |         WPA    |         WPA2   | */
 317 /*      +------+-----+------+-----+ */
 318 /*      | TKIP | AES | TKIP | AES | */
 319 /*      |       0  |  1  |   1  |  0  | -> 0x06 */
 320 /*      |       0  |  1  |   1  |  1  | -> 0x07 */
 321 /*      |       1  |  0  |   0  |  1  | -> 0x09 */
 322 /*      |       1  |  0  |   1  |  1  | -> 0x0B */
 323 /*      |       1  |  1  |   0  |  1  | -> 0x0D */
 324 /*      |       1  |  1  |   1  |  0  | -> 0x0E */
 325 /*      |       1  |  1  |   1  |  1  | -> 0x0F */
 326 /*      +------+-----+------+-----+ */
 327 /* */
 328 typedef enum _WpaMixPairCipher {
 329         MIX_CIPHER_NOTUSE = 0x00,
 330         WPA_NONE_WPA2_TKIPAES = 0x03,   /* WPA2-TKIPAES */
 331         WPA_AES_WPA2_TKIP = 0x06,
 332         WPA_AES_WPA2_TKIPAES = 0x07,
 333         WPA_TKIP_WPA2_AES = 0x09,
 334         WPA_TKIP_WPA2_TKIPAES = 0x0B,
 335         WPA_TKIPAES_WPA2_NONE = 0x0C,   /* WPA-TKIPAES */
 336         WPA_TKIPAES_WPA2_AES = 0x0D,
 337         WPA_TKIPAES_WPA2_TKIP = 0x0E,
 338         WPA_TKIPAES_WPA2_TKIPAES = 0x0F,
 339 } WPA_MIX_PAIR_CIPHER;
 340
 341 struct PACKED rt_rsn_ie_header {
 342         u8 Eid;
 343         u8 Length;
 344         u16 Version;            /* Little endian format */
 345 };
 346
 347 /* Cipher suite selector types */
 348 struct PACKED rt_cipher_suite_struct {
 349         u8 Oui[3];
 350         u8 Type;
 351 };
 352
 353 /* Authentication and Key Management suite selector */
 354 struct PACKED rt_akm_suite {
 355         u8 Oui[3];
 356         u8 Type;
 357 };
 358
 359 /* RSN capability */
 360 struct PACKED rt_rsn_capability {
 361         u16 Rsv:10;
 362         u16 GTKSAReplayCnt:2;
 363         u16 PTKSAReplayCnt:2;
 364         u16 NoPairwise:1;
 365         u16 PreAuth:1;
 366 };
 367
 368 /*========================================
 369         The prototype is defined in cmm_wpa.c
 370   ========================================*/
 371 BOOLEAN WpaMsgTypeSubst(u8 EAPType, int * MsgType);
 372
 373 void PRF(u8 * key,
 374          int key_len,
 375          u8 * prefix,
 376          int prefix_len,
 377          u8 * data, int data_len, u8 * output, int len);
 378
 379 int PasswordHash(char *password,
 380                  unsigned char *ssid, int ssidlength, unsigned char *output);
 381
 382 u8 *GetSuiteFromRSNIE(u8 *rsnie,
 383                          u32 rsnie_len, u8 type, u8 * count);
 384
 385 void WpaShowAllsuite(u8 *rsnie, u32 rsnie_len);
 386
 387 void RTMPInsertRSNIE(u8 *pFrameBuf,
 388                      unsigned long *pFrameLen,
 389                      u8 *rsnie_ptr,
 390                      u8 rsnie_len,
 391                      u8 *pmkid_ptr, u8 pmkid_len);
 392
 393 #endif