/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* 802.1x EAPOL definitions
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*
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* See
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* IEEE Std 802.1X-2001
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* IEEE 802.1X RADIUS Usage Guidelines
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*
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* Copyright (C) 1999-2017, Broadcom Corporation
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2 (the "GPL"),
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* available at http://www.broadcom.com/licenses/GPLv2.php, with the
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* following added to such license:
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*
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* As a special exception, the copyright holders of this software give you
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* permission to link this software with independent modules, and to copy and
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* distribute the resulting executable under terms of your choice, provided that
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* you also meet, for each linked independent module, the terms and conditions of
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* the license of that module. An independent module is a module which is not
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* derived from this software. The special exception does not apply to any
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* modifications of the software.
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*
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* Notwithstanding the above, under no circumstances may you combine this
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* software in any way with any other Broadcom software provided under a license
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* other than the GPL, without Broadcom's express prior written consent.
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*
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*
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* <<Broadcom-WL-IPTag/Open:>>
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*
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* $Id: eapol.h 700076 2017-05-17 14:42:22Z $
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*/
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#ifndef _eapol_h_
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#define _eapol_h_
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#ifndef _TYPEDEFS_H_
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#include <typedefs.h>
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#endif
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/* This marks the start of a packed structure section. */
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#include <packed_section_start.h>
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#if !defined(BCMCRYPTO_COMPONENT)
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#include <bcmcrypto/aeskeywrap.h>
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#endif /* !BCMCRYPTO_COMPONENT */
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/* EAPOL for 802.3/Ethernet */
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typedef BWL_PRE_PACKED_STRUCT struct {
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struct ether_header eth; /* 802.3/Ethernet header */
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unsigned char version; /* EAPOL protocol version */
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unsigned char type; /* EAPOL type */
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unsigned short length; /* Length of body */
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unsigned char body[1]; /* Body (optional) */
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} BWL_POST_PACKED_STRUCT eapol_header_t;
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#define EAPOL_HEADER_LEN 18
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typedef struct {
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unsigned char version; /* EAPOL protocol version */
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unsigned char type; /* EAPOL type */
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unsigned short length; /* Length of body */
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} eapol_hdr_t;
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#define EAPOL_HDR_LEN 4
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/* EAPOL version */
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#define WPA2_EAPOL_VERSION 2
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#define WPA_EAPOL_VERSION 1
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#define LEAP_EAPOL_VERSION 1
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#define SES_EAPOL_VERSION 1
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/* EAPOL types */
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#define EAP_PACKET 0
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#define EAPOL_START 1
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#define EAPOL_LOGOFF 2
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#define EAPOL_KEY 3
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#define EAPOL_ASF 4
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/* EAPOL-Key types */
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#define EAPOL_RC4_KEY 1
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#define EAPOL_WPA2_KEY 2 /* 802.11i/WPA2 */
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#define EAPOL_WPA_KEY 254 /* WPA */
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/* RC4 EAPOL-Key header field sizes */
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#define EAPOL_KEY_REPLAY_LEN 8
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#define EAPOL_KEY_IV_LEN 16
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#define EAPOL_KEY_SIG_LEN 16
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/* RC4 EAPOL-Key */
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typedef BWL_PRE_PACKED_STRUCT struct {
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unsigned char type; /* Key Descriptor Type */
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unsigned short length; /* Key Length (unaligned) */
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unsigned char replay[EAPOL_KEY_REPLAY_LEN]; /* Replay Counter */
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unsigned char iv[EAPOL_KEY_IV_LEN]; /* Key IV */
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unsigned char index; /* Key Flags & Index */
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unsigned char signature[EAPOL_KEY_SIG_LEN]; /* Key Signature */
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unsigned char key[1]; /* Key (optional) */
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} BWL_POST_PACKED_STRUCT eapol_key_header_t;
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#define EAPOL_KEY_HEADER_LEN 44
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/* RC4 EAPOL-Key flags */
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#define EAPOL_KEY_FLAGS_MASK 0x80
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#define EAPOL_KEY_BROADCAST 0
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#define EAPOL_KEY_UNICAST 0x80
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/* RC4 EAPOL-Key index */
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#define EAPOL_KEY_INDEX_MASK 0x7f
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/* WPA/802.11i/WPA2 EAPOL-Key header field sizes */
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#define EAPOL_AKW_BLOCK_LEN 8
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#define EAPOL_WPA_KEY_REPLAY_LEN 8
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#define EAPOL_WPA_KEY_NONCE_LEN 32
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#define EAPOL_WPA_KEY_IV_LEN 16
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#define EAPOL_WPA_KEY_RSC_LEN 8
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#define EAPOL_WPA_KEY_ID_LEN 8
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#define EAPOL_WPA_KEY_MIC_LEN 16
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#define EAPOL_WPA_KEY_DATA_LEN (EAPOL_WPA_MAX_KEY_SIZE + EAPOL_AKW_BLOCK_LEN)
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#define EAPOL_WPA_MAX_KEY_SIZE 32
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/* WPA EAPOL-Key */
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typedef BWL_PRE_PACKED_STRUCT struct {
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unsigned char type; /* Key Descriptor Type */
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unsigned short key_info; /* Key Information (unaligned) */
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unsigned short key_len; /* Key Length (unaligned) */
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unsigned char replay[EAPOL_WPA_KEY_REPLAY_LEN]; /* Replay Counter */
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unsigned char nonce[EAPOL_WPA_KEY_NONCE_LEN]; /* Nonce */
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unsigned char iv[EAPOL_WPA_KEY_IV_LEN]; /* Key IV */
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unsigned char rsc[EAPOL_WPA_KEY_RSC_LEN]; /* Key RSC */
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unsigned char id[EAPOL_WPA_KEY_ID_LEN]; /* WPA:Key ID, 802.11i/WPA2: Reserved */
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unsigned char mic[EAPOL_WPA_KEY_MIC_LEN]; /* Key MIC */
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unsigned short data_len; /* Key Data Length */
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unsigned char data[EAPOL_WPA_KEY_DATA_LEN]; /* Key data */
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} BWL_POST_PACKED_STRUCT eapol_wpa_key_header_t;
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#define EAPOL_WPA_KEY_LEN 95
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/* WPA/802.11i/WPA2 KEY KEY_INFO bits */
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#define WPA_KEY_DESC_OSEN 0x0
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#define WPA_KEY_DESC_V1 0x01
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#define WPA_KEY_DESC_V2 0x02
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#define WPA_KEY_DESC_V3 0x03
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#define WPA_KEY_PAIRWISE 0x08
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#define WPA_KEY_INSTALL 0x40
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#define WPA_KEY_ACK 0x80
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#define WPA_KEY_MIC 0x100
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#define WPA_KEY_SECURE 0x200
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#define WPA_KEY_ERROR 0x400
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#define WPA_KEY_REQ 0x800
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#define WPA_KEY_DESC_V2_OR_V3 WPA_KEY_DESC_V2
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/* WPA-only KEY KEY_INFO bits */
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#define WPA_KEY_INDEX_0 0x00
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#define WPA_KEY_INDEX_1 0x10
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#define WPA_KEY_INDEX_2 0x20
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#define WPA_KEY_INDEX_3 0x30
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#define WPA_KEY_INDEX_MASK 0x30
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#define WPA_KEY_INDEX_SHIFT 0x04
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/* 802.11i/WPA2-only KEY KEY_INFO bits */
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#define WPA_KEY_ENCRYPTED_DATA 0x1000
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/* Key Data encapsulation */
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typedef BWL_PRE_PACKED_STRUCT struct {
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uint8 type;
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uint8 length;
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uint8 oui[3];
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uint8 subtype;
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uint8 data[1];
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} BWL_POST_PACKED_STRUCT eapol_wpa2_encap_data_t;
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#define EAPOL_WPA2_ENCAP_DATA_HDR_LEN 6
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#define WPA2_KEY_DATA_SUBTYPE_GTK 1
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#define WPA2_KEY_DATA_SUBTYPE_STAKEY 2
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#define WPA2_KEY_DATA_SUBTYPE_MAC 3
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#define WPA2_KEY_DATA_SUBTYPE_PMKID 4
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#define WPA2_KEY_DATA_SUBTYPE_IGTK 9
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/* GTK encapsulation */
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typedef BWL_PRE_PACKED_STRUCT struct {
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uint8 flags;
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uint8 reserved;
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uint8 gtk[EAPOL_WPA_MAX_KEY_SIZE];
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} BWL_POST_PACKED_STRUCT eapol_wpa2_key_gtk_encap_t;
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#define EAPOL_WPA2_KEY_GTK_ENCAP_HDR_LEN 2
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#define WPA2_GTK_INDEX_MASK 0x03
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#define WPA2_GTK_INDEX_SHIFT 0x00
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#define WPA2_GTK_TRANSMIT 0x04
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/* IGTK encapsulation */
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typedef BWL_PRE_PACKED_STRUCT struct {
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uint16 key_id;
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uint8 ipn[6];
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uint8 key[EAPOL_WPA_MAX_KEY_SIZE];
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} BWL_POST_PACKED_STRUCT eapol_wpa2_key_igtk_encap_t;
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#define EAPOL_WPA2_KEY_IGTK_ENCAP_HDR_LEN 8
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/* STAKey encapsulation */
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typedef BWL_PRE_PACKED_STRUCT struct {
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uint8 reserved[2];
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uint8 mac[ETHER_ADDR_LEN];
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uint8 stakey[EAPOL_WPA_MAX_KEY_SIZE];
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} BWL_POST_PACKED_STRUCT eapol_wpa2_key_stakey_encap_t;
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#define WPA2_KEY_DATA_PAD 0xdd
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/* This marks the end of a packed structure section. */
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#include <packed_section_end.h>
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#endif /* _eapol_h_ */
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