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/*
* Copyright (C) 2008 William Stewart.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program 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 GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <byteswap.h>
#include <gpxe/features.h>
#include <gpxe/netdevice.h>
#include <gpxe/if_ether.h>
#include <gpxe/iobuf.h>
#include <usr/ifmgmt.h>
#include <usr/wol.h>
#include <timer.h>
/** @file
*
* Wake on lan
*
*/
/**
* Boot from a network device
*
* @v netdev Network device
* @ret rc Return status code
*/
#define WOL_MSG_LEN (6 + 16*6)
void wakeup_server(char *server_adr)
{
int rc, i,j;
unsigned char *buf;
uint8_t eth_broadcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
unsigned int len;
struct io_buffer *iobuf;
struct ethhdr *ethhdr;
struct net_device *netdev;
for_each_netdev ( netdev ) {
break;
}
if (netdev == NULL)
{
printf("Could not find netdev\n");
return;
}
/* Open device and display device status */
if ( (ifopen ( netdev ) ) != 0 )
{
printf("Could not open netdev\n");
return;
}
/* Create outgoing I/O buffer */
iobuf = alloc_iob ((ETH_HLEN + WOL_MSG_LEN)*2);
if (!iobuf)
{
printf("Could not allocate iob\n");
return;
}
ethhdr = iob_put(iobuf, sizeof(*ethhdr));
/* Build Ethernet header */
memcpy (ethhdr->h_dest, eth_broadcast, ETH_ALEN );
memcpy (ethhdr->h_source, netdev->ll_addr, ETH_ALEN );
ethhdr->h_protocol = htons (0x0842);
buf = iob_put (iobuf, WOL_MSG_LEN);
/* Build the message to send - 6 x 0xff then 16 x dest address */
len =0;
for (i = 0; i < 6; i++)
buf[len++] = 0xff;
for (j = 0; j < 16; j++)
for (i = 0; i < 6; i++)
buf[len++] = server_adr[i];
rc = netdev_tx (netdev, iobuf);
if (rc !=0)
printf("Failed to transmit WOL packet\n");
/* Give the controller a chance to send it before checking */
mdelay(100);
netdev_poll(netdev);
}
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