release/src/include/proto/eapol.h

   1 /*
   2  * 802.1x EAPOL definitions
   3  *
   4  * See
   5  * IEEE Std 802.1X-2001
   6  * IEEE 802.1X RADIUS Usage Guidelines
   7  *
   8  * Copyright (C) 2002 Broadcom Corporation
   9  *
  10  * $Id$
  11  */
  12
  13 #ifndef _eapol_h_
  14 #define _eapol_h_
  15
  16 /* enable structure packing */
  17 #if defined(__GNUC__)
  18 #define PACKED  __attribute__((packed))
  19 #else
  20 #pragma pack(1)
  21 #define PACKED
  22 #endif
  23
  24 #include <bcmcrypto/aeskeywrap.h>
  25
  26 /* EAPOL for 802.3/Ethernet */
  27 typedef struct {
  28         struct ether_header eth;        /* 802.3/Ethernet header */
  29         unsigned char version;          /* EAPOL protocol version */
  30         unsigned char type;             /* EAPOL type */
  31         unsigned short length;          /* Length of body */
  32         unsigned char body[1];          /* Body (optional) */
  33 } eapol_header_t;
  34
  35 #define EAPOL_HEADER_LEN 18
  36
  37 /* EAPOL version */
  38 #define WPA2_EAPOL_VERSION      2
  39 #define WPA_EAPOL_VERSION       1
  40 #define LEAP_EAPOL_VERSION      1
  41 #define SES_EAPOL_VERSION       1
  42
  43 /* EAPOL types */
  44 #define EAP_PACKET              0
  45 #define EAPOL_START             1
  46 #define EAPOL_LOGOFF            2
  47 #define EAPOL_KEY               3
  48 #define EAPOL_ASF               4
  49
  50 /* EAPOL-Key types */
  51 #define EAPOL_RC4_KEY           1
  52 #ifdef BCMWPA2
  53 #define EAPOL_WPA2_KEY          2       /* 802.11i/WPA2 */
  54 #endif
  55 #define EAPOL_WPA_KEY           254     /* WPA */
  56
  57 /* RC4 EAPOL-Key header field sizes */
  58 #define EAPOL_KEY_REPLAY_LEN    8
  59 #define EAPOL_KEY_IV_LEN        16
  60 #define EAPOL_KEY_SIG_LEN       16
  61
  62 /* RC4 EAPOL-Key */
  63 typedef struct {
  64         unsigned char type;                     /* Key Descriptor Type */
  65         unsigned short length;                  /* Key Length (unaligned) */
  66         unsigned char replay[EAPOL_KEY_REPLAY_LEN];     /* Replay Counter */
  67         unsigned char iv[EAPOL_KEY_IV_LEN];             /* Key IV */
  68         unsigned char index;                            /* Key Flags & Index */
  69         unsigned char signature[EAPOL_KEY_SIG_LEN];     /* Key Signature */
  70         unsigned char key[1];                           /* Key (optional) */
  71 } PACKED eapol_key_header_t;
  72
  73 #define EAPOL_KEY_HEADER_LEN    44
  74
  75 /* RC4 EAPOL-Key flags */
  76 #define EAPOL_KEY_FLAGS_MASK    0x80
  77 #define EAPOL_KEY_BROADCAST     0
  78 #define EAPOL_KEY_UNICAST       0x80
  79
  80 /* RC4 EAPOL-Key index */
  81 #define EAPOL_KEY_INDEX_MASK    0x7f
  82
  83 /* WPA/802.11i/WPA2 EAPOL-Key header field sizes */
  84 #define EAPOL_WPA_KEY_REPLAY_LEN        8
  85 #define EAPOL_WPA_KEY_NONCE_LEN         32
  86 #define EAPOL_WPA_KEY_IV_LEN            16
  87 #define EAPOL_WPA_KEY_RSC_LEN           8
  88 #define EAPOL_WPA_KEY_ID_LEN            8
  89 #define EAPOL_WPA_KEY_MIC_LEN           16
  90 #define EAPOL_WPA_KEY_DATA_LEN          (EAPOL_WPA_MAX_KEY_SIZE + AKW_BLOCK_LEN)
  91 #define EAPOL_WPA_MAX_KEY_SIZE          32
  92
  93 /* WPA EAPOL-Key */
  94 typedef struct {
  95         unsigned char type;             /* Key Descriptor Type */
  96         unsigned short key_info;        /* Key Information (unaligned) */
  97         unsigned short key_len;         /* Key Length (unaligned) */
  98         unsigned char replay[EAPOL_WPA_KEY_REPLAY_LEN]; /* Replay Counter */
  99         unsigned char nonce[EAPOL_WPA_KEY_NONCE_LEN];   /* Nonce */
 100         unsigned char iv[EAPOL_WPA_KEY_IV_LEN];         /* Key IV */
 101         unsigned char rsc[EAPOL_WPA_KEY_RSC_LEN];       /* Key RSC */
 102         unsigned char id[EAPOL_WPA_KEY_ID_LEN];         /* WPA:Key ID, 802.11i/WPA2: Reserved */
 103         unsigned char mic[EAPOL_WPA_KEY_MIC_LEN];       /* Key MIC */
 104         unsigned short data_len;                        /* Key Data Length */
 105         unsigned char data[EAPOL_WPA_KEY_DATA_LEN];     /* Key data */
 106 } PACKED eapol_wpa_key_header_t;
 107
 108 #define EAPOL_WPA_KEY_LEN               95
 109
 110 /* WPA/802.11i/WPA2 KEY KEY_INFO bits */
 111 #define WPA_KEY_DESC_V1         0x01
 112 #define WPA_KEY_DESC_V2         0x02
 113 #define WPA_KEY_PAIRWISE        0x08
 114 #define WPA_KEY_INSTALL         0x40
 115 #define WPA_KEY_ACK             0x80
 116 #define WPA_KEY_MIC             0x100
 117 #define WPA_KEY_SECURE          0x200
 118 #define WPA_KEY_ERROR           0x400
 119 #define WPA_KEY_REQ             0x800
 120
 121 /* WPA-only KEY KEY_INFO bits */
 122 #define WPA_KEY_INDEX_0         0x00
 123 #define WPA_KEY_INDEX_1         0x10
 124 #define WPA_KEY_INDEX_2         0x20
 125 #define WPA_KEY_INDEX_3         0x30
 126 #define WPA_KEY_INDEX_MASK      0x30
 127 #define WPA_KEY_INDEX_SHIFT     0x04
 128
 129 #ifdef BCMWPA2
 130 /* 802.11i/WPA2-only KEY KEY_INFO bits */
 131 #define WPA_KEY_ENCRYPTED_DATA  0x1000
 132
 133 /* Key Data encapsulation */
 134 typedef struct {
 135         uint8 type;
 136         uint8 length;
 137         uint8 oui[3];
 138         uint8 subtype;
 139         uint8 data[1];
 140 } PACKED eapol_wpa2_encap_data_t;
 141
 142 #define EAPOL_WPA2_ENCAP_DATA_HDR_LEN   6
 143
 144 #define WPA2_KEY_DATA_SUBTYPE_GTK       1
 145 #define WPA2_KEY_DATA_SUBTYPE_STAKEY    2
 146 #define WPA2_KEY_DATA_SUBTYPE_MAC       3
 147 #define WPA2_KEY_DATA_SUBTYPE_PMKID     4
 148
 149 /* GTK encapsulation */
 150 typedef struct {
 151         uint8   flags;
 152         uint8   reserved;
 153         uint8   gtk[EAPOL_WPA_MAX_KEY_SIZE];
 154 } PACKED eapol_wpa2_key_gtk_encap_t;
 155
 156 #define EAPOL_WPA2_KEY_GTK_ENCAP_HDR_LEN        2
 157
 158 #define WPA2_GTK_INDEX_MASK     0x03
 159 #define WPA2_GTK_INDEX_SHIFT    0x00
 160
 161 #define WPA2_GTK_TRANSMIT       0x04
 162
 163 /* STAKey encapsulation */
 164 typedef struct {
 165         uint8   reserved[2];
 166         uint8   mac[ETHER_ADDR_LEN];
 167         uint8   stakey[EAPOL_WPA_MAX_KEY_SIZE];
 168 } PACKED eapol_wpa2_key_stakey_encap_t;
 169
 170 #define WPA2_KEY_DATA_PAD       0xdd
 171
 172 #endif /* BCMWPA2 */
 173
 174 #undef PACKED
 175 #if !defined(__GNUC__)
 176 #pragma pack()
 177 #endif
 178
 179 #endif /* _eapol_h_ */