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120 lines
3.2 KiB
120 lines
3.2 KiB
/*
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* ethtool.c - setting of basic ethtool options
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*
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* Copyright (C) 2003 Red Hat, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License 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. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author(s): Jeremy Katz <katzj@redhat.com>
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <net/if.h>
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#include <linux/sockios.h>
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#include "ethtool.h"
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static int set_intf_up(struct ifreq ifr, int sock) {
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if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
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return (-1);
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}
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ifr.ifr_flags |= (IFF_UP | IFF_RUNNING);
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if (ioctl(sock, SIOCSIFFLAGS, &ifr) < 0) {
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fprintf(stderr, "failed to bring up interface %s: %s", ifr.ifr_name,
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strerror(errno));
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return -1;
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}
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return (0);
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}
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int setEthtoolSettings(char * dev, ethtool_speed speed,
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ethtool_duplex duplex) {
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int sock, err;
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struct ethtool_cmd ecmd;
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struct ifreq ifr;
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if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
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perror("Unable to create socket");
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return -1;
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}
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/* Setup our control structures. */
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memset(&ifr, 0, sizeof(ifr));
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strcpy(ifr.ifr_name, dev);
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if (set_intf_up(ifr, sock) == -1) {
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fprintf(stderr, "unable to bring up interface %s: %s", dev,
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strerror(errno));
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return -1;
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}
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ecmd.cmd = ETHTOOL_GSET;
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ifr.ifr_data = (caddr_t)&ecmd;
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err = ioctl(sock, SIOCETHTOOL, &ifr);
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if (err < 0) {
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perror("Unable to get settings via ethtool. Not setting");
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return -1;
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}
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if (speed != ETHTOOL_SPEED_UNSPEC)
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ecmd.speed = speed;
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if (duplex != ETHTOOL_DUPLEX_UNSPEC)
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ecmd.duplex = duplex;
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if ((duplex != ETHTOOL_DUPLEX_UNSPEC) || (speed != ETHTOOL_SPEED_UNSPEC))
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ecmd.autoneg = AUTONEG_DISABLE;
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ecmd.cmd = ETHTOOL_SSET;
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ifr.ifr_data = (caddr_t)&ecmd;
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err = ioctl(sock, SIOCETHTOOL, &ifr);
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if (err < 0) {
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// perror("Unable to set settings via ethtool. Not setting");
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return -1;
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}
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return 0;
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}
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int identifyNIC(char *iface, int seconds) {
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int sock;
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struct ethtool_value edata;
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struct ifreq ifr;
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if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
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perror("Unable to create socket");
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return -1;
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}
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memset(&ifr, 0, sizeof(ifr));
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memset(&edata, 0, sizeof(edata));
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strcpy(ifr.ifr_name, iface);
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edata.cmd = ETHTOOL_PHYS_ID;
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edata.data = seconds;
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ifr.ifr_data = (caddr_t) &edata;
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if (ioctl(sock, SIOCETHTOOL, &ifr) < 0) {
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perror("Unable to identify NIC");
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}
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return 0;
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}
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