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   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(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 #define DESC_TYPE_MESH                          3
  71
  72 #define LEN_MSG1_2WAY               0x7f
  73 #define MAX_LEN_OF_EAP_HS           256
  74
  75 #define LEN_MASTER_KEY                          32
  76
  77 // EAPOL EK, MK
  78 #define LEN_EAP_EK                                      16
  79 #define LEN_EAP_MICK                            16
  80 #define LEN_EAP_KEY                                     ((LEN_EAP_EK)+(LEN_EAP_MICK))
  81 // TKIP key related
  82 #define LEN_PMKID                                       16
  83 #define LEN_TKIP_EK                                     16
  84 #define LEN_TKIP_RXMICK                         8
  85 #define LEN_TKIP_TXMICK                         8
  86 #define LEN_AES_EK                                      16
  87 #define LEN_AES_KEY                                     LEN_AES_EK
  88 #define LEN_TKIP_KEY                            ((LEN_TKIP_EK)+(LEN_TKIP_RXMICK)+(LEN_TKIP_TXMICK))
  89 #define TKIP_AP_TXMICK_OFFSET           ((LEN_EAP_KEY)+(LEN_TKIP_EK))
  90 #define TKIP_AP_RXMICK_OFFSET           (TKIP_AP_TXMICK_OFFSET+LEN_TKIP_TXMICK)
  91 #define TKIP_GTK_LENGTH                         ((LEN_TKIP_EK)+(LEN_TKIP_RXMICK)+(LEN_TKIP_TXMICK))
  92 #define LEN_PTK                                         ((LEN_EAP_KEY)+(LEN_TKIP_KEY))
  93 #define MIN_LEN_OF_GTK                          5
  94
  95 // RSN IE Length definition
  96 #define MAX_LEN_OF_RSNIE                90
  97 #define MIN_LEN_OF_RSNIE                8
  98
  99 //EAP Packet Type
 100 #define EAPPacket               0
 101 #define EAPOLStart              1
 102 #define EAPOLLogoff             2
 103 #define EAPOLKey                3
 104 #define EAPOLASFAlert   4
 105 #define EAPTtypeMax             5
 106
 107 #define EAPOL_MSG_INVALID       0
 108 #define EAPOL_PAIR_MSG_1        1
 109 #define EAPOL_PAIR_MSG_2        2
 110 #define EAPOL_PAIR_MSG_3        3
 111 #define EAPOL_PAIR_MSG_4        4
 112 #define EAPOL_GROUP_MSG_1       5
 113 #define EAPOL_GROUP_MSG_2       6
 114
 115 #define PAIRWISEKEY                                     1
 116 #define GROUPKEY                                        0
 117
 118 // Retry timer counter initial value
 119 #define PEER_MSG1_RETRY_TIMER_CTR           0
 120 #define PEER_MSG3_RETRY_TIMER_CTR           10
 121 #define GROUP_MSG1_RETRY_TIMER_CTR          20
 122
 123
 124 #define EAPOL_START_DISABLE                                     0
 125 #define EAPOL_START_PSK                                         1
 126 #define EAPOL_START_1X                                          2
 127
 128 #define MIX_CIPHER_WPA_TKIP_ON(x)       (((x) & 0x08) != 0)
 129 #define MIX_CIPHER_WPA_AES_ON(x)        (((x) & 0x04) != 0)
 130 #define MIX_CIPHER_WPA2_TKIP_ON(x)      (((x) & 0x02) != 0)
 131 #define MIX_CIPHER_WPA2_AES_ON(x)       (((x) & 0x01) != 0)
 132
 133 #define ROUND_UP(__x, __y) \
 134         (((ULONG)((__x)+((__y)-1))) & ((ULONG)~((__y)-1)))
 135
 136 #define ADD_ONE_To_64BIT_VAR(_V)                \
 137 {                                                                               \
 138         UCHAR   cnt = LEN_KEY_DESC_REPLAY;      \
 139         do                                                                      \
 140         {                                                                       \
 141                 cnt--;                                                  \
 142                 _V[cnt]++;                                              \
 143                 if (cnt == 0)                                   \
 144                         break;                                          \
 145         }while (_V[cnt] == 0);                          \
 146 }
 147
 148 #define IS_WPA_CAPABILITY(a)       (((a) >= Ndis802_11AuthModeWPA) && ((a) <= Ndis802_11AuthModeWPA1PSKWPA2PSK))
 149
 150 // EAPOL Key Information definition within Key descriptor format
 151 typedef struct PACKED _KEY_INFO
 152 {
 153 #ifdef RT_BIG_ENDIAN
 154         UCHAR   KeyAck:1;
 155     UCHAR       Install:1;
 156     UCHAR       KeyIndex:2;
 157     UCHAR       KeyType:1;
 158     UCHAR       KeyDescVer:3;
 159     UCHAR       Rsvd:3;
 160     UCHAR       EKD_DL:1;               // EKD for AP; DL for STA
 161     UCHAR       Request:1;
 162     UCHAR       Error:1;
 163     UCHAR       Secure:1;
 164     UCHAR       KeyMic:1;
 165 #else
 166         UCHAR   KeyMic:1;
 167         UCHAR   Secure:1;
 168         UCHAR   Error:1;
 169         UCHAR   Request:1;
 170         UCHAR   EKD_DL:1;       // EKD for AP; DL for STA
 171         UCHAR   Rsvd:3;
 172         UCHAR   KeyDescVer:3;
 173         UCHAR   KeyType:1;
 174         UCHAR   KeyIndex:2;
 175         UCHAR   Install:1;
 176         UCHAR   KeyAck:1;
 177 #endif
 178 }       KEY_INFO, *PKEY_INFO;
 179
 180 // EAPOL Key descriptor format
 181 typedef struct PACKED _KEY_DESCRIPTER
 182 {
 183         UCHAR           Type;
 184         KEY_INFO        KeyInfo;
 185         UCHAR           KeyLength[2];
 186         UCHAR           ReplayCounter[LEN_KEY_DESC_REPLAY];
 187         UCHAR           KeyNonce[LEN_KEY_DESC_NONCE];
 188         UCHAR           KeyIv[LEN_KEY_DESC_IV];
 189         UCHAR           KeyRsc[LEN_KEY_DESC_RSC];
 190         UCHAR           KeyId[LEN_KEY_DESC_ID];
 191         UCHAR           KeyMic[LEN_KEY_DESC_MIC];
 192         UCHAR           KeyDataLen[2];
 193         UCHAR           KeyData[MAX_LEN_OF_RSNIE];
 194 }       KEY_DESCRIPTER, *PKEY_DESCRIPTER;
 195
 196 typedef struct PACKED _EAPOL_PACKET
 197 {
 198         UCHAR                           ProVer;
 199         UCHAR                           ProType;
 200         UCHAR                           Body_Len[2];
 201         KEY_DESCRIPTER          KeyDesc;
 202 }       EAPOL_PACKET, *PEAPOL_PACKET;
 203
 204 //802.11i D10 page 83
 205 typedef struct PACKED _GTK_ENCAP
 206 {
 207 #ifndef RT_BIG_ENDIAN
 208     UCHAR               Kid:2;
 209     UCHAR               tx:1;
 210     UCHAR               rsv:5;
 211     UCHAR               rsv1;
 212 #else
 213     UCHAR               rsv:5;
 214     UCHAR               tx:1;
 215     UCHAR               Kid:2;
 216     UCHAR               rsv1;
 217 #endif
 218     UCHAR               GTK[TKIP_GTK_LENGTH];
 219 }   GTK_ENCAP, *PGTK_ENCAP;
 220
 221 typedef struct PACKED _KDE_ENCAP
 222 {
 223     UCHAR               Type;
 224     UCHAR               Len;
 225     UCHAR               OUI[3];
 226     UCHAR               DataType;
 227     GTK_ENCAP      GTKEncap;
 228 }   KDE_ENCAP, *PKDE_ENCAP;
 229
 230 // For WPA1
 231 typedef struct PACKED _RSNIE {
 232     UCHAR   oui[4];
 233     USHORT  version;
 234     UCHAR   mcast[4];
 235     USHORT  ucount;
 236     struct PACKED {
 237         UCHAR oui[4];
 238     }ucast[1];
 239 } RSNIE, *PRSNIE;
 240
 241 // For WPA2
 242 typedef struct PACKED _RSNIE2 {
 243     USHORT  version;
 244     UCHAR   mcast[4];
 245     USHORT  ucount;
 246     struct PACKED {
 247         UCHAR oui[4];
 248     }ucast[1];
 249 } RSNIE2, *PRSNIE2;
 250
 251 // AKM Suite
 252 typedef struct PACKED _RSNIE_AUTH {
 253     USHORT acount;
 254     struct PACKED {
 255         UCHAR oui[4];
 256     }auth[1];
 257 } RSNIE_AUTH,*PRSNIE_AUTH;
 258
 259 typedef union PACKED _RSN_CAPABILITIES  {
 260         struct  PACKED {
 261 #ifdef RT_BIG_ENDIAN
 262         USHORT          Rsvd:10;
 263         USHORT          GTKSA_R_Counter:2;
 264         USHORT          PTKSA_R_Counter:2;
 265         USHORT          No_Pairwise:1;
 266                 USHORT          PreAuth:1;
 267 #else
 268         USHORT          PreAuth:1;
 269                 USHORT          No_Pairwise:1;
 270                 USHORT          PTKSA_R_Counter:2;
 271                 USHORT          GTKSA_R_Counter:2;
 272                 USHORT          Rsvd:10;
 273 #endif
 274         }       field;
 275         USHORT                  word;
 276 }       RSN_CAPABILITIES, *PRSN_CAPABILITIES;
 277
 278 typedef struct PACKED _EAP_HDR {
 279     UCHAR   ProVer;
 280     UCHAR   ProType;
 281     UCHAR   Body_Len[2];
 282     UCHAR   code;
 283     UCHAR   identifier;
 284     UCHAR   length[2]; // including code and identifier, followed by length-2 octets of data
 285 } EAP_HDR, *PEAP_HDR;
 286
 287 // For supplicant state machine states. 802.11i Draft 4.1, p. 97
 288 // We simplified it
 289 typedef enum    _WpaState
 290 {
 291         SS_NOTUSE,                              // 0
 292         SS_START,                               // 1
 293         SS_WAIT_MSG_3,                  // 2
 294         SS_WAIT_GROUP,                  // 3
 295         SS_FINISH,                      // 4
 296         SS_KEYUPDATE,                   // 5
 297 }       WPA_STATE;
 298
 299 //
 300 //      The definition of the cipher combination
 301 //
 302 //       bit3   bit2  bit1   bit0
 303 //      +------------+------------+
 304 //      |         WPA    |         WPA2   |
 305 //      +------+-----+------+-----+
 306 //      | TKIP | AES | TKIP | AES |
 307 //      |       0  |  1  |   1  |  0  | -> 0x06
 308 //      |       0  |  1  |   1  |  1  | -> 0x07
 309 //      |       1  |  0  |   0  |  1  | -> 0x09
 310 //      |       1  |  0  |   1  |  1  | -> 0x0B
 311 //      |       1  |  1  |   0  |  1  | -> 0x0D
 312 //      |       1  |  1  |   1  |  0  | -> 0x0E
 313 //      |       1  |  1  |   1  |  1  | -> 0x0F
 314 //      +------+-----+------+-----+
 315 //
 316 typedef enum    _WpaMixPairCipher
 317 {
 318         MIX_CIPHER_NOTUSE                       = 0x00,
 319         WPA_NONE_WPA2_TKIPAES           = 0x03,         // WPA2-TKIPAES
 320         WPA_AES_WPA2_TKIP                       = 0x06,
 321         WPA_AES_WPA2_TKIPAES            = 0x07,
 322         WPA_TKIP_WPA2_AES                       = 0x09,
 323         WPA_TKIP_WPA2_TKIPAES           = 0x0B,
 324         WPA_TKIPAES_WPA2_NONE           = 0x0C,         // WPA-TKIPAES
 325         WPA_TKIPAES_WPA2_AES            = 0x0D,
 326         WPA_TKIPAES_WPA2_TKIP           = 0x0E,
 327         WPA_TKIPAES_WPA2_TKIPAES        = 0x0F,
 328 }       WPA_MIX_PAIR_CIPHER;
 329
 330 typedef struct PACKED _RSN_IE_HEADER_STRUCT     {
 331         UCHAR           Eid;
 332         UCHAR           Length;
 333         USHORT          Version;        // Little endian format
 334 }       RSN_IE_HEADER_STRUCT, *PRSN_IE_HEADER_STRUCT;
 335
 336 // Cipher suite selector types
 337 typedef struct PACKED _CIPHER_SUITE_STRUCT      {
 338         UCHAR           Oui[3];
 339         UCHAR           Type;
 340 }       CIPHER_SUITE_STRUCT, *PCIPHER_SUITE_STRUCT;
 341
 342 // Authentication and Key Management suite selector
 343 typedef struct PACKED _AKM_SUITE_STRUCT {
 344         UCHAR           Oui[3];
 345         UCHAR           Type;
 346 }       AKM_SUITE_STRUCT, *PAKM_SUITE_STRUCT;
 347
 348 // RSN capability
 349 typedef struct  PACKED _RSN_CAPABILITY  {
 350         USHORT          Rsv:10;
 351         USHORT          GTKSAReplayCnt:2;
 352         USHORT          PTKSAReplayCnt:2;
 353         USHORT          NoPairwise:1;
 354         USHORT          PreAuth:1;
 355 }       RSN_CAPABILITY, *PRSN_CAPABILITY;
 356
 357 #endif