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/*
* Copyright (c) 1998 The University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
/*
* The Ethernet layer.
*/
#include <oskit/io/bufio.h>
#include <oskit/io/netio.h>
#include <oskit/net/ether.h>
#include <oskit/c/string.h>
#include <oskit/c/arpa/inet.h>
#include <oskit/fudp.h>
#include "fudp.h"
/*
* Send an Ethernet frame.
*/
oskit_error_t
eth_transmit(oskit_netio_t *netio,
unsigned char src[],
unsigned char dst[],
unsigned short type,
oskit_bufio_t *b,
oskit_size_t blen)
{
oskit_error_t err;
struct ether_header *eth;
if (blen > ETH_MAX_PACKET)
return OSKIT_E_INVALIDARG;
/*
* Map in the bufio so `eth' points to the Ethernet header part.
*/
err = oskit_bufio_map(b, (void **)ð, 0, blen);
if (err)
return err;
/*
* Fill in the Ethernet header.
*/
memcpy(eth->ether_shost, src, ETHER_ADDR_SIZE);
memcpy(eth->ether_dhost, dst, ETHER_ADDR_SIZE);
eth->ether_type = htons(type);
oskit_bufio_unmap(b, eth, 0, blen);
return oskit_netio_push(netio, b, blen);
}
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