2 * collectd - src/ethstat.c
3 * Copyright (C) 2011 Cyril Feraudet
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Cyril Feraudet <cyril at feraudet.com>
26 #include "configfile.h"
29 #include <sys/ioctl.h>
31 #include <linux/sockios.h>
33 static int ethstat_config (const char *key, const char *value)
35 if (strcasecmp ("Iface", key) == 0)
39 tmp = realloc (ifacelist,
40 sizeof (*ifacelist) * (ifacenumber + 1));
45 ifacelist[ifacenumber] = strdup (value);
46 if (ifacelist[ifacenumber] == NULL)
48 ERROR ("ethstat plugin: strdup() failed.");
53 INFO("ethstat plugin: Registred interface %s", value);
58 static void ethstat_submit_value (char *devname, char *counter, unsigned long long value)
61 value_list_t vl = VALUE_LIST_INIT;
63 values[0].counter = value;
67 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
68 sstrncpy (vl.plugin, "ethstat", sizeof (vl.plugin));
69 sstrncpy (vl.plugin_instance, devname, sizeof (vl.plugin_instance));
70 sstrncpy (vl.type, "derive", sizeof (vl.type));
71 sstrncpy (vl.type_instance, counter, sizeof (vl.type_instance));
73 plugin_dispatch_values (&vl);
77 static int getstats(char *devname, struct ifreq *ifr) {
79 struct ethtool_drvinfo drvinfo;
80 struct ethtool_gstrings *strings;
81 struct ethtool_stats *stats;
82 unsigned int n_stats, sz_str, sz_stats, i;
86 fd = socket(AF_INET, SOCK_DGRAM, 0);
88 ERROR("ethstat - %s : Cannot get control socket", devname);
92 drvinfo.cmd = ETHTOOL_GDRVINFO;
93 ifr->ifr_data = (caddr_t)&drvinfo;
94 err = ioctl(fd, SIOCETHTOOL, ifr);
96 ERROR("ethstat - %s : Cannot get driver information", devname);
101 n_stats = drvinfo.n_stats;
103 ERROR("ethstat - %s : No stats available", devname);
107 sz_str = n_stats * ETH_GSTRING_LEN;
108 sz_stats = n_stats * sizeof(u64);
110 strings = calloc(1, sz_str + sizeof(struct ethtool_gstrings));
111 stats = calloc(1, sz_stats + sizeof(struct ethtool_stats));
112 if (!strings || !stats) {
113 ERROR("ethstat - %s No memory available", devname);
117 strings->cmd = ETHTOOL_GSTRINGS;
118 strings->string_set = ETH_SS_STATS;
119 strings->len = n_stats;
120 ifr->ifr_data = (caddr_t) strings;
121 err = ioctl(fd, SIOCETHTOOL, ifr);
123 ERROR("ethstat - %s : Cannot get stats strings information", devname);
129 stats->cmd = ETHTOOL_GSTATS;
130 stats->n_stats = n_stats;
131 ifr->ifr_data = (caddr_t) stats;
132 err = ioctl(fd, SIOCETHTOOL, ifr);
134 ERROR("ethstat - %s : Cannot get stats information", devname);
140 for (i = 0; i < n_stats; i++) {
141 DEBUG("ethstat - %s : %s: %llu",
143 &strings->data[i * ETH_GSTRING_LEN],
145 ethstat_submit_value (
147 (char*)&strings->data[i * ETH_GSTRING_LEN],
156 static int ethstat_read(void)
161 for (i = 0 ; i < ifacenumber ; i++) {
162 DEBUG("ethstat - Processing : %s\n", ifacelist[i]);
163 memset(&ifr, 0, sizeof(ifr));
164 sstrncpy(ifr.ifr_name, ifacelist[i], sizeof (ifr.ifr_name));
165 getstats(ifacelist[i], &ifr);
170 void module_register (void)
172 plugin_register_config ("ethstat", ethstat_config,
173 config_keys, config_keys_num);
174 plugin_register_read ("ethstat", ethstat_read);