eapol.c File Reference

802.1X Extensible Authentication Protocol over LANs demultiplexer More...

#include <gpxe/netdevice.h>
#include <gpxe/iobuf.h>
#include <gpxe/if_ether.h>
#include <gpxe/eapol.h>
#include <errno.h>
#include <byteswap.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER)
static int	eapol_rx (struct io_buffer *iob, struct net_device *netdev, const void *ll_source)
	Receive EAPOL network-layer packet.
static const char *	eapol_ntoa (const void *net_addr __unused)
	Transcribe EAPOL network-layer address.
Variables
struct net_protocol eapol_protocol	__net_protocol
	EAPOL network protocol.

---

Detailed Description

802.1X Extensible Authentication Protocol over LANs demultiplexer

Definition in file eapol.c.

---

Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

static int eapol_rx	(	struct io_buffer *	iob,
		struct net_device *	netdev,
		const void *	ll_source
	)			[static]

Receive EAPOL network-layer packet.

Parameters:

	iob	I/O buffer
	netdev	Network device
	ll_source	Link-layer source address

This function takes ownership of the I/O buffer passed to it.

Definition at line 43 of file eapol.c.

References io_buffer::data, EAPOL_HANDLERS, EAPOL_HDR_LEN, EINVAL, ENOTSUP, for_each_table_entry, free_iob(), iob_len(), iob_pull, eapol_handler::rx, eapol_frame::type, and eapol_handler::type.

{
        struct eapol_frame *eapol = iob->data;
        struct eapol_handler *handler;

        if ( iob_len ( iob ) < EAPOL_HDR_LEN ) {
                free_iob ( iob );
                return -EINVAL;
        }

        for_each_table_entry ( handler, EAPOL_HANDLERS ) {
                if ( handler->type == eapol->type ) {
                        iob_pull ( iob, EAPOL_HDR_LEN );
                        return handler->rx ( iob, netdev, ll_source );
                }
        }

        free_iob ( iob );
        return -( ENOTSUP | ( ( eapol->type & 0x1f ) << 8 ) );
}

static const char* eapol_ntoa

(

const void *net_addr

__unused

)

[static]

Transcribe EAPOL network-layer address.

Parameters:

net_addr

Network-layer address

Return values:

str

String representation of network-layer address

EAPOL doesn't have network-layer addresses, so we just return the string "<EAPOL>".

Definition at line 74 of file eapol.c.

{
        return "<EAPOL>";
}

---

Variable Documentation

struct net_protocol eapol_protocol __net_protocol

Initial value:

 {
        .name = "EAPOL",
        .rx = eapol_rx,
        .ntoa = eapol_ntoa,
        .net_proto = htons ( ETH_P_EAPOL ),
}

EAPOL network protocol.

AoE protocol.

Definition at line 80 of file eapol.c.