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/*
* Copyright 2007, Intel Corporation
*
* This file is part of PowerTOP
*
* This program file 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; version 2 of the License.
*
* 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 in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* Authors:
* Arjan van de Ven <arjan@linux.intel.com>
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <sys/types.h>
#include <dirent.h>
#include <linux/types.h>
#include <net/if.h>
#include <linux/sockios.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
/* work around a bug in debian -- it exposes kernel internal types to userspace */
#define u64 __u64
#define u32 __u32
#define u16 __u16
#define u8 __u8
#include <linux/ethtool.h>
#undef u64
#undef u32
#undef u16
#undef u8
#include "powertop.h"
void activate_WOL_suggestion(void)
{
int sock;
struct ifreq ifr;
struct ethtool_wolinfo wol;
int ret;
memset(&ifr, 0, sizeof(struct ifreq));
sock = socket(AF_INET, SOCK_DGRAM, 0);
if (sock<0)
return;
strcpy(ifr.ifr_name, "eth0");
/* Check if the interface is up */
ret = ioctl(sock, SIOCGIFFLAGS, &ifr);
if (ret<0) {
close(sock);
return;
}
if (ifr.ifr_flags & (IFF_UP | IFF_RUNNING)) {
close(sock);
return;
}
memset(&wol, 0, sizeof(wol));
wol.cmd = ETHTOOL_GWOL;
ifr.ifr_data = (caddr_t)&wol;
ioctl(sock, SIOCETHTOOL, &ifr);
wol.cmd = ETHTOOL_SWOL;
wol.wolopts = 0;
ioctl(sock, SIOCETHTOOL, &ifr);
close(sock);
}
void suggest_WOL_off(void)
{
int sock;
struct ifreq ifr;
struct ethtool_wolinfo wol;
int ret;
memset(&ifr, 0, sizeof(struct ifreq));
sock = socket(AF_INET, SOCK_DGRAM, 0);
if (sock<0)
return;
strcpy(ifr.ifr_name, "eth0");
/* Check if the interface is up */
ret = ioctl(sock, SIOCGIFFLAGS, &ifr);
if (ret<0) {
close(sock);
return;
}
if (ifr.ifr_flags & (IFF_UP | IFF_RUNNING)) {
close(sock);
return;
}
memset(&wol, 0, sizeof(wol));
wol.cmd = ETHTOOL_GWOL;
ifr.ifr_data = (caddr_t)&wol;
ioctl(sock, SIOCETHTOOL, &ifr);
if (wol.wolopts) {
add_suggestion(_(
"Disable Ethernet Wake-On-Lan with the following command:\n"
" ethtool -s eth0 wol d \n"
"Wake-on-Lan keeps the phy active, this costs power."), 5,
'W', _(" W - disable Wake-On-Lan "), activate_WOL_suggestion);
}
close(sock);
}
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