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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <sys/ioctl.h>
#include <net/if.h>
#include <linux/ethtool.h>
#include <linux/sockios.h>
#include "ethtool-util.h"
#include "strxcpyx.h"
#include "util.h"
#include "log.h"
int ethtool_connect(int *ret) {
int fd;
assert_return(ret, -EINVAL);
fd = socket(PF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
return -errno;
}
*ret = fd;
return 0;
}
int ethtool_set_speed(int fd, const char *ifname, const unsigned int speed, const char *duplex)
{
struct ifreq ifr;
struct ethtool_cmd ecmd;
bool need_update;
int r;
if (speed == 0 && !duplex)
return 0;
memset(&ecmd, 0x00, sizeof(struct ethtool_cmd));
ecmd.cmd = ETHTOOL_GSET;
memset(&ifr, 0x00, sizeof(struct ifreq));
strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
ifr.ifr_data = (void *)&ecmd;
r = ioctl(fd, SIOCETHTOOL, &ifr);
if (r < 0)
return -errno;
if (ethtool_cmd_speed(&ecmd) != speed) {
ethtool_cmd_speed_set(&ecmd, speed);
need_update = true;
}
if (duplex) {
if (streq(duplex, "half")) {
if (ecmd.duplex != DUPLEX_HALF) {
ecmd.duplex = DUPLEX_HALF;
need_update = true;
}
} else if (streq(duplex, "full"))
if (ecmd.duplex != DUPLEX_FULL) {
ecmd.duplex = DUPLEX_FULL;
need_update = true;
}
}
if (need_update) {
ecmd.cmd = ETHTOOL_SSET;
r = ioctl(fd, SIOCETHTOOL, &ifr);
if (r < 0)
return -errno;
}
return 0;
}
int ethtool_set_wol(int fd, const char *ifname, const char *wol) {
struct ifreq ifr;
struct ethtool_wolinfo ecmd;
bool need_update;
int r;
if (!wol)
return 0;
memset(&ecmd, 0x00, sizeof(struct ethtool_wolinfo));
ecmd.cmd = ETHTOOL_GWOL;
memset(&ifr, 0x00, sizeof(struct ifreq));
strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
ifr.ifr_data = (void *)&ecmd;
r = ioctl(fd, SIOCETHTOOL, &ifr);
if (r < 0)
return -errno;
if (streq(wol, "phy")) {
if (ecmd.wolopts != WAKE_PHY) {
ecmd.wolopts = WAKE_PHY;
need_update = true;
}
} else if (streq(wol, "magic")) {
if (ecmd.wolopts != WAKE_MAGIC) {
ecmd.wolopts = WAKE_MAGIC;
need_update = true;
}
} else if (streq(wol, "off")) {
if (ecmd.wolopts != 0) {
ecmd.wolopts = 0;
need_update = true;
}
} else
return -EINVAL;
if (need_update) {
ecmd.cmd = ETHTOOL_SWOL;
r = ioctl(fd, SIOCETHTOOL, &ifr);
if (r < 0)
return -errno;
}
return 0;
}
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