2 * collectd - src/interface.c
3 * Copyright (C) 2005-2007 Florian octo Forster
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; only version 2 of the License is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Florian octo Forster <octo at verplant.org>
20 * Sune Marcher <sm at flork.dk>
26 #include "configfile.h"
29 # include <sys/types.h>
32 # include <sys/socket.h>
35 /* One cannot include both. This sucks. */
37 # include <linux/if.h>
42 #if HAVE_LINUX_NETDEVICE_H
43 # include <linux/netdevice.h>
50 * Various people have reported problems with `getifaddrs' and varying versions
51 * of `glibc'. That's why it's disabled by default. Since more statistics are
52 * available this way one may enable it using the `--enable-getifaddrs' option
53 * of the configure script. -octo
56 # if !COLLECT_GETIFADDRS
57 # undef HAVE_GETIFADDRS
58 # endif /* !COLLECT_GETIFADDRS */
59 #endif /* KERNEL_LINUX */
61 #if HAVE_GETIFADDRS || KERNEL_LINUX || HAVE_LIBKSTAT || HAVE_LIBSTATGRAB
62 # define INTERFACE_HAVE_READ 1
64 # define INTERFACE_HAVE_READ 0
68 * (Module-)Global variables
70 static const char *config_keys[] =
76 static int config_keys_num = 2;
78 static char **if_list = NULL;
79 static int if_list_num = 0;
82 * 0 => default is to collect selected interface
83 * 1 => ignore selcted interfaces
85 static int if_list_action = 0;
89 extern kstat_ctl_t *kc;
90 static kstat_t *ksp[MAX_NUMIF];
92 #endif /* HAVE_LIBKSTAT */
94 static int interface_config (const char *key, const char *value)
98 if (strcasecmp (key, "Interface") == 0)
100 temp = (char **) realloc (if_list, (if_list_num + 1) * sizeof (char *));
103 ERROR ("Cannot allocate more memory.");
108 if ((if_list[if_list_num] = strdup (value)) == NULL)
110 ERROR ("Cannot allocate memory.");
115 else if (strcasecmp (key, "IgnoreSelected") == 0)
117 if ((strcasecmp (value, "True") == 0)
118 || (strcasecmp (value, "Yes") == 0)
119 || (strcasecmp (value, "On") == 0))
133 static int interface_init (void)
137 unsigned long long val;
144 for (numif = 0, ksp_chain = kc->kc_chain;
145 (numif < MAX_NUMIF) && (ksp_chain != NULL);
146 ksp_chain = ksp_chain->ks_next)
148 if (strncmp (ksp_chain->ks_class, "net", 3))
150 if (ksp_chain->ks_type != KSTAT_TYPE_NAMED)
152 if (kstat_read (kc, ksp_chain, NULL) == -1)
154 if ((val = get_kstat_value (ksp_chain, "obytes")) == -1LL)
156 ksp[numif++] = ksp_chain;
158 #endif /* HAVE_LIBKSTAT */
161 } /* int interface_init */
162 #endif /* HAVE_LIBKSTAT */
165 * Check if this interface/instance should be ignored. This is called from
166 * both, `submit' and `write' to give client and server the ability to
167 * ignore certain stuff..
169 static int check_ignore_if (const char *interface)
173 /* If no interfaces are given collect all interfaces. Mostly to be
174 * backwards compatible, but also because this is much easier. */
178 for (i = 0; i < if_list_num; i++)
179 if (strcasecmp (interface, if_list[i]) == 0)
180 return (if_list_action);
181 return (1 - if_list_action);
182 } /* int check_ignore_if */
184 #if INTERFACE_HAVE_READ
185 static void if_submit (const char *dev, const char *type,
186 unsigned long long rx,
187 unsigned long long tx)
190 value_list_t vl = VALUE_LIST_INIT;
192 if (check_ignore_if (dev))
195 values[0].counter = rx;
196 values[1].counter = tx;
200 vl.time = time (NULL);
201 strcpy (vl.host, hostname_g);
202 strcpy (vl.plugin, "interface");
203 strncpy (vl.type_instance, dev, sizeof (vl.type_instance));
205 plugin_dispatch_values (type, &vl);
206 } /* void if_submit */
208 static int interface_read (void)
211 struct ifaddrs *if_list;
212 struct ifaddrs *if_ptr;
214 /* Darin/Mac OS X and possible other *BSDs */
215 #if HAVE_STRUCT_IF_DATA
216 # define IFA_DATA if_data
217 # define IFA_RX_BYTES ifi_ibytes
218 # define IFA_TX_BYTES ifi_obytes
219 # define IFA_RX_PACKT ifi_ipackets
220 # define IFA_TX_PACKT ifi_opackets
221 # define IFA_RX_ERROR ifi_ierrors
222 # define IFA_TX_ERROR ifi_oerrors
223 /* #endif HAVE_STRUCT_IF_DATA */
225 #elif HAVE_STRUCT_NET_DEVICE_STATS
226 # define IFA_DATA net_device_stats
227 # define IFA_RX_BYTES rx_bytes
228 # define IFA_TX_BYTES tx_bytes
229 # define IFA_RX_PACKT rx_packets
230 # define IFA_TX_PACKT tx_packets
231 # define IFA_RX_ERROR rx_errors
232 # define IFA_TX_ERROR tx_errors
234 # error "No suitable type for `struct ifaddrs->ifa_data' found."
237 struct IFA_DATA *if_data;
239 if (getifaddrs (&if_list) != 0)
242 for (if_ptr = if_list; if_ptr != NULL; if_ptr = if_ptr->ifa_next)
244 if ((if_data = (struct IFA_DATA *) if_ptr->ifa_data) == NULL)
247 if_submit (if_ptr->ifa_name, "if_octets",
248 if_data->IFA_RX_BYTES,
249 if_data->IFA_TX_BYTES);
250 if_submit (if_ptr->ifa_name, "if_packets",
251 if_data->IFA_RX_PACKT,
252 if_data->IFA_TX_PACKT);
253 if_submit (if_ptr->ifa_name, "if_errors",
254 if_data->IFA_RX_ERROR,
255 if_data->IFA_TX_ERROR);
258 freeifaddrs (if_list);
259 /* #endif HAVE_GETIFADDRS */
264 unsigned long long incoming, outgoing;
271 if ((fh = fopen ("/proc/net/dev", "r")) == NULL)
274 WARNING ("interface plugin: fopen: %s",
275 sstrerror (errno, errbuf, sizeof (errbuf)));
279 while (fgets (buffer, 1024, fh) != NULL)
281 if (!(dummy = strchr(buffer, ':')))
287 while (device[0] == ' ')
290 if (device[0] == '\0')
293 numfields = strsplit (dummy, fields, 16);
298 incoming = atoll (fields[0]);
299 outgoing = atoll (fields[8]);
300 if_submit (device, "if_octets", incoming, outgoing);
302 incoming = atoll (fields[1]);
303 outgoing = atoll (fields[9]);
304 if_submit (device, "if_packets", incoming, outgoing);
306 incoming = atoll (fields[2]);
307 outgoing = atoll (fields[10]);
308 if_submit (device, "if_errors", incoming, outgoing);
312 /* #endif KERNEL_LINUX */
316 unsigned long long rx;
317 unsigned long long tx;
322 for (i = 0; i < numif; i++)
324 if (kstat_read (kc, ksp[i], NULL) == -1)
327 rx = get_kstat_value (ksp[i], "rbytes");
328 tx = get_kstat_value (ksp[i], "obytes");
329 if ((rx != -1LL) || (tx != -1LL))
330 if_submit (ksp[i]->ks_name, "if_octets", rx, tx);
332 rx = get_kstat_value (ksp[i], "ipackets");
333 tx = get_kstat_value (ksp[i], "opackets");
334 if ((rx != -1LL) || (tx != -1LL))
335 if_submit (ksp[i]->ks_name, "if_packets", rx, tx);
337 rx = get_kstat_value (ksp[i], "ierrors");
338 tx = get_kstat_value (ksp[i], "oerrors");
339 if ((rx != -1LL) || (tx != -1LL))
340 if_submit (ksp[i]->ks_name, "if_errors", rx, tx);
342 /* #endif HAVE_LIBKSTAT */
344 #elif defined(HAVE_LIBSTATGRAB)
345 sg_network_io_stats *ios;
348 ios = sg_get_network_io_stats (&num);
350 for (i = 0; i < num; i++)
351 if_submit (ios[i].interface_name, "if_octets", ios[i].rx, ios[i].tx);
352 #endif /* HAVE_LIBSTATGRAB */
355 } /* int interface_read */
356 #endif /* INTERFACE_HAVE_READ */
358 void module_register (void)
360 plugin_register_config ("interface", interface_config,
361 config_keys, config_keys_num);
363 plugin_register_init ("interface", interface_init);
365 #if INTERFACE_HAVE_READ
366 plugin_register_read ("interface", interface_read);
368 } /* void module_register */