drivers/staging/ks7010/eap_packet.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef EAP_PACKET_H
   3 #define EAP_PACKET_H
   4
   5 #include <linux/compiler.h>
   6
   7 #define WBIT(n) (1 << (n))
   8
   9 #ifndef ETH_ALEN
  10 #define ETH_ALEN 6
  11 #endif
  12
  13 #define ETHER_HDR_SIZE 20
  14
  15 struct ether_hdr {
  16         unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
  17         unsigned char h_source[ETH_ALEN];       /* source ether addr    */
  18         unsigned char h_dest_snap;
  19         unsigned char h_source_snap;
  20         unsigned char h_command;
  21         unsigned char h_vendor_id[3];
  22         __be16 h_proto; /* packet type ID field */
  23 #define ETHER_PROTOCOL_TYPE_EAP         0x888e
  24 #define ETHER_PROTOCOL_TYPE_IP          0x0800
  25 #define ETHER_PROTOCOL_TYPE_ARP         0x0806
  26         /* followed by length octets of data */
  27 } __packed;
  28
  29 struct ieee802_1x_hdr {
  30         unsigned char version;
  31         unsigned char type;
  32         unsigned short length;
  33         /* followed by length octets of data */
  34 } __packed;
  35
  36 #define EAPOL_VERSION 2
  37
  38 enum { IEEE802_1X_TYPE_EAP_PACKET = 0,
  39         IEEE802_1X_TYPE_EAPOL_START = 1,
  40         IEEE802_1X_TYPE_EAPOL_LOGOFF = 2,
  41         IEEE802_1X_TYPE_EAPOL_KEY = 3,
  42         IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT = 4
  43 };
  44
  45 enum { EAPOL_KEY_TYPE_RC4 = 1, EAPOL_KEY_TYPE_RSN = 2,
  46         EAPOL_KEY_TYPE_WPA = 254
  47 };
  48
  49 #define IEEE8021X_REPLAY_COUNTER_LEN 8
  50 #define IEEE8021X_KEY_SIGN_LEN 16
  51 #define IEEE8021X_KEY_IV_LEN 16
  52
  53 #define IEEE8021X_KEY_INDEX_FLAG 0x80
  54 #define IEEE8021X_KEY_INDEX_MASK 0x03
  55
  56 struct ieee802_1x_eapol_key {
  57         unsigned char type;
  58         unsigned short key_length;
  59         /*
  60          * does not repeat within the life of the keying material used to
  61          * encrypt the Key field; 64-bit NTP timestamp MAY be used here
  62          */
  63         unsigned char replay_counter[IEEE8021X_REPLAY_COUNTER_LEN];
  64         unsigned char key_iv[IEEE8021X_KEY_IV_LEN]; /* cryptographically random
  65                                                      * number
  66                                                      */
  67         unsigned char key_index;        /*
  68                                          * key flag in the most significant bit:
  69                                          * 0 = broadcast (default key),
  70                                          * 1 = unicast (key mapping key);
  71                                          * key index is in the 7 least
  72                                          * significant bits
  73                                          */
  74         /*
  75          * HMAC-MD5 message integrity check computed with MS-MPPE-Send-Key as
  76          * the key
  77          */
  78         unsigned char key_signature[IEEE8021X_KEY_SIGN_LEN];
  79
  80         /*
  81          * followed by key: if packet body length = 44 + key length, then the
  82          * key field (of key_length bytes) contains the key in encrypted form;
  83          * if packet body length = 44, key field is absent and key_length
  84          * represents the number of least significant octets from
  85          * MS-MPPE-Send-Key attribute to be used as the keying material;
  86          * RC4 key used in encryption = Key-IV + MS-MPPE-Recv-Key
  87          */
  88 } __packed;
  89
  90 #define WPA_NONCE_LEN 32
  91 #define WPA_REPLAY_COUNTER_LEN 8
  92
  93 struct wpa_eapol_key {
  94         unsigned char type;
  95         __be16 key_info;
  96         unsigned short key_length;
  97         unsigned char replay_counter[WPA_REPLAY_COUNTER_LEN];
  98         unsigned char key_nonce[WPA_NONCE_LEN];
  99         unsigned char key_iv[16];
 100         unsigned char key_rsc[8];
 101         unsigned char key_id[8];        /* Reserved in IEEE 802.11i/RSN */
 102         unsigned char key_mic[16];
 103         unsigned short key_data_length;
 104         /* followed by key_data_length bytes of key_data */
 105 } __packed;
 106
 107 #define WPA_KEY_INFO_TYPE_MASK (WBIT(0) | WBIT(1) | WBIT(2))
 108 #define WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 WBIT(0)
 109 #define WPA_KEY_INFO_TYPE_HMAC_SHA1_AES WBIT(1)
 110 #define WPA_KEY_INFO_KEY_TYPE WBIT(3)   /* 1 = Pairwise, 0 = Group key */
 111 /* bit4..5 is used in WPA, but is reserved in IEEE 802.11i/RSN */
 112 #define WPA_KEY_INFO_KEY_INDEX_MASK (WBIT(4) | WBIT(5))
 113 #define WPA_KEY_INFO_KEY_INDEX_SHIFT 4
 114 #define WPA_KEY_INFO_INSTALL WBIT(6)    /* pairwise */
 115 #define WPA_KEY_INFO_TXRX WBIT(6)       /* group */
 116 #define WPA_KEY_INFO_ACK WBIT(7)
 117 #define WPA_KEY_INFO_MIC WBIT(8)
 118 #define WPA_KEY_INFO_SECURE WBIT(9)
 119 #define WPA_KEY_INFO_ERROR WBIT(10)
 120 #define WPA_KEY_INFO_REQUEST WBIT(11)
 121 #define WPA_KEY_INFO_ENCR_KEY_DATA WBIT(12)     /* IEEE 802.11i/RSN only */
 122
 123 #define WPA_CAPABILITY_PREAUTH WBIT(0)
 124
 125 #define GENERIC_INFO_ELEM 0xdd
 126 #define RSN_INFO_ELEM 0x30
 127
 128 enum {
 129         REASON_UNSPECIFIED = 1,
 130         REASON_DEAUTH_LEAVING = 3,
 131         REASON_INVALID_IE = 13,
 132         REASON_MICHAEL_MIC_FAILURE = 14,
 133         REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
 134         REASON_GROUP_KEY_UPDATE_TIMEOUT = 16,
 135         REASON_IE_IN_4WAY_DIFFERS = 17,
 136         REASON_GROUP_CIPHER_NOT_VALID = 18,
 137         REASON_PAIRWISE_CIPHER_NOT_VALID = 19,
 138         REASON_AKMP_NOT_VALID = 20,
 139         REASON_UNSUPPORTED_RSN_IE_VERSION = 21,
 140         REASON_INVALID_RSN_IE_CAPAB = 22,
 141         REASON_IEEE_802_1X_AUTH_FAILED = 23,
 142         REASON_CIPHER_SUITE_REJECTED = 24
 143 };
 144
 145 #endif /* EAP_PACKET_H */