1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <sys/ioctl.h>
24 #include <linux/ethtool.h>
25 #include <linux/sockios.h>
27 #include "ethtool-util.h"
32 #include "conf-parser.h"
34 static const char* const duplex_table[_DUP_MAX] = {
39 DEFINE_STRING_TABLE_LOOKUP(duplex, Duplex);
40 DEFINE_CONFIG_PARSE_ENUM(config_parse_duplex, duplex, Duplex, "Failed to parse duplex setting");
42 static const char* const wol_table[_WOL_MAX] = {
44 [WOL_MAGIC] = "magic",
48 DEFINE_STRING_TABLE_LOOKUP(wol, WakeOnLan);
49 DEFINE_CONFIG_PARSE_ENUM(config_parse_wol, wol, WakeOnLan, "Failed to parse WakeOnLan setting");
51 int ethtool_connect(int *ret) {
54 assert_return(ret, -EINVAL);
56 fd = socket(PF_INET, SOCK_DGRAM, 0);
66 int ethtool_get_driver(int *fd, const char *ifname, char **ret) {
67 struct ethtool_drvinfo ecmd = {
68 .cmd = ETHTOOL_GDRVINFO
71 .ifr_data = (void*) &ecmd
77 r = ethtool_connect(fd);
79 return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
82 strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
84 r = ioctl(*fd, SIOCETHTOOL, &ifr);
88 d = strdup(ecmd.driver);
96 int ethtool_set_speed(int *fd, const char *ifname, unsigned int speed, Duplex duplex)
98 struct ethtool_cmd ecmd = {
102 .ifr_data = (void*) &ecmd
104 bool need_update = false;
107 if (speed == 0 && duplex == _DUP_INVALID)
111 r = ethtool_connect(fd);
113 return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
116 strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
118 r = ioctl(*fd, SIOCETHTOOL, &ifr);
122 if (ethtool_cmd_speed(&ecmd) != speed) {
123 ethtool_cmd_speed_set(&ecmd, speed);
129 if (ecmd.duplex != DUPLEX_HALF) {
130 ecmd.duplex = DUPLEX_HALF;
135 if (ecmd.duplex != DUPLEX_FULL) {
136 ecmd.duplex = DUPLEX_FULL;
145 ecmd.cmd = ETHTOOL_SSET;
147 r = ioctl(*fd, SIOCETHTOOL, &ifr);
155 int ethtool_set_wol(int *fd, const char *ifname, WakeOnLan wol) {
156 struct ethtool_wolinfo ecmd = {
160 .ifr_data = (void*) &ecmd
162 bool need_update = false;
165 if (wol == _WOL_INVALID)
169 r = ethtool_connect(fd);
171 return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
174 strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
176 r = ioctl(*fd, SIOCETHTOOL, &ifr);
182 if (ecmd.wolopts != WAKE_PHY) {
183 ecmd.wolopts = WAKE_PHY;
188 if (ecmd.wolopts != WAKE_MAGIC) {
189 ecmd.wolopts = WAKE_MAGIC;
194 if (ecmd.wolopts != 0) {
204 ecmd.cmd = ETHTOOL_SWOL;
206 r = ioctl(*fd, SIOCETHTOOL, &ifr);