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[eapol] Replace EAPoL code
Replace the GPL2+-only EAPoL code (currently used only for WPA) with new code licensed under GPL2+-or-UBDL. Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Michael Brown
@@ -1,114 +1,58 @@
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/*
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* Copyright (c) 2009 Joshua Oreman <oremanj@rwcr.net>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#ifndef _IPXE_EAPOL_H
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#define _IPXE_EAPOL_H
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/** @file
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*
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* Definitions for EAPOL (Extensible Authentication Protocol over
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* LANs) frames. Definitions for the packets usually encapsulated in
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* them are elsewhere.
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* Extensible Authentication Protocol over LAN (EAPoL)
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*
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*/
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#include <ipxe/tables.h>
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <ipxe/netdevice.h>
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#include <ipxe/tables.h>
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FILE_LICENCE ( GPL2_OR_LATER );
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/**
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* @defgroup eapol_type EAPOL archetype identifiers
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* @{
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*/
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#define EAPOL_TYPE_EAP 0 /**< EAP authentication handshake packet */
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#define EAPOL_TYPE_START 1 /**< Request by Peer to begin (no data) */
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#define EAPOL_TYPE_LOGOFF 2 /**< Request by Peer to terminate (no data) */
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#define EAPOL_TYPE_KEY 3 /**< EAPOL-Key packet */
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/** @} */
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/** Expected EAPOL version field value
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*
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* Version 2 is often seen and has no format differences from version 1;
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* however, many older APs will completely drop version-2 packets, so
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* we advertise ourselves as version 1.
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*/
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#define EAPOL_THIS_VERSION 1
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/** Length of an EAPOL frame header */
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#define EAPOL_HDR_LEN 4
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/** An EAPOL frame
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*
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* This may encapsulate an eap_pkt, an eapol_key_pkt, or a Start or
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* Logoff request with no data attached. It is transmitted directly in
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* an Ethernet frame, with no IP packet header.
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*/
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struct eapol_frame
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{
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/** EAPOL version identifier, always 1 */
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u8 version;
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/** EAPOL archetype identifier indicating format of payload */
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u8 type;
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/** Length of payload, in network byte order */
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u16 length;
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/** Payload, if @a type is EAP or EAPOL-Key */
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u8 data[0];
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/** EAPoL header */
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struct eapol_header {
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/** Version */
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uint8_t version;
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/** Type */
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uint8_t type;
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/** Payload length */
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uint16_t len;
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} __attribute__ (( packed ));
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/** 802.1X-2001 */
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#define EAPOL_VERSION_2001 1
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/** An EAPOL frame type handler
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*
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* Normally there will be at most two of these, one for EAP and one
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* for EAPOL-Key frames. The EAPOL interface code handles Start and
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* Logoff directly.
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*/
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struct eapol_handler
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{
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/** EAPOL archetype identifier for payload this handler will handle */
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u8 type;
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/** EAPoL key */
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#define EAPOL_TYPE_KEY 5
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/** Receive EAPOL-encapsulated packet of specified type
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/** An EAPoL handler */
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struct eapol_handler {
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/** Type */
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uint8_t type;
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/**
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* Process received packet
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*
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* @v iob I/O buffer containing packet payload
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* @v netdev Network device from which packet was received
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* @V ll_dest Destination link-layer address
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* @v ll_source Source link-layer address
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* @ret rc Return status code
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* @v iobuf I/O buffer
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* @v netdev Network device
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* @v ll_source Link-layer source address
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* @ret rc Return status code
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*
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* The I/O buffer will have the EAPOL header pulled off it, so
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* @c iob->data points to the first byte of the payload.
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*
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* This function takes ownership of the I/O buffer passed to it.
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* This method takes ownership of the I/O buffer.
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*/
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int ( * rx ) ( struct io_buffer *iob, struct net_device *netdev,
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const void *ll_dest, const void *ll_source );
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int ( * rx ) ( struct io_buffer *iobuf, struct net_device *netdev,
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const void *ll_source );
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};
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#define EAPOL_HANDLERS __table ( struct eapol_handler, "eapol_handlers" )
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#define __eapol_handler __table_entry ( EAPOL_HANDLERS, 01 )
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/** EAPoL handler table */
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#define EAPOL_HANDLERS __table ( struct eapol_handler, "eapol_handlers" )
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/** Declare an EAPoL handler */
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#define __eapol_handler __table_entry ( EAPOL_HANDLERS, 01 )
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extern struct net_protocol eapol_protocol __net_protocol;
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#endif /* _IPXE_EAPOL_H */
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