139 lines
2.8 KiB
C
139 lines
2.8 KiB
C
/*
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* Copyright 2007, Intel Corporation
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*
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* This file is part of PowerTOP
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*
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* This program file is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* 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 in a file named COPYING; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*
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* Authors:
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* Arjan van de Ven <arjan@linux.intel.com>
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <linux/types.h>
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#include <net/if.h>
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#include <linux/sockios.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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/* work around a bug in debian -- it exposes kernel internal types to userspace */
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#define u64 __u64
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#define u32 __u32
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#define u16 __u16
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#define u8 __u8
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#include <linux/ethtool.h>
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#undef u64
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#undef u32
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#undef u16
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#undef u8
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#include "powertop.h"
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void activate_WOL_suggestion(void)
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{
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int sock;
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struct ifreq ifr;
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struct ethtool_wolinfo wol;
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int ret;
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memset(&ifr, 0, sizeof(struct ifreq));
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sock = socket(AF_INET, SOCK_DGRAM, 0);
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if (sock<0)
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return;
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strcpy(ifr.ifr_name, "eth0");
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/* Check if the interface is up */
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ret = ioctl(sock, SIOCGIFFLAGS, &ifr);
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if (ret<0) {
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close(sock);
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return;
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}
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if (ifr.ifr_flags & (IFF_UP | IFF_RUNNING)) {
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close(sock);
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return;
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}
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memset(&wol, 0, sizeof(wol));
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wol.cmd = ETHTOOL_GWOL;
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ifr.ifr_data = (caddr_t)&wol;
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ioctl(sock, SIOCETHTOOL, &ifr);
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wol.cmd = ETHTOOL_SWOL;
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wol.wolopts = 0;
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ioctl(sock, SIOCETHTOOL, &ifr);
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close(sock);
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}
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void suggest_WOL_off(void)
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{
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int sock;
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struct ifreq ifr;
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struct ethtool_wolinfo wol;
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int ret;
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memset(&ifr, 0, sizeof(struct ifreq));
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sock = socket(AF_INET, SOCK_DGRAM, 0);
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if (sock<0)
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return;
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strcpy(ifr.ifr_name, "eth0");
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/* Check if the interface is up */
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ret = ioctl(sock, SIOCGIFFLAGS, &ifr);
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if (ret<0) {
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close(sock);
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return;
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}
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if (ifr.ifr_flags & (IFF_UP | IFF_RUNNING)) {
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close(sock);
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return;
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}
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memset(&wol, 0, sizeof(wol));
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wol.cmd = ETHTOOL_GWOL;
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ifr.ifr_data = (caddr_t)&wol;
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ioctl(sock, SIOCETHTOOL, &ifr);
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if (wol.wolopts) {
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add_suggestion(_(
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"Disable Ethernet Wake-On-Lan with the following command:\n"
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" ethtool -s eth0 wol d \n"
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"Wake-on-Lan keeps the phy active, this costs power."), 5,
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'W', _(" W - disable Wake-On-Lan "), activate_WOL_suggestion);
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}
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close(sock);
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}
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