4458b5b949228951a72a4bafb02400b5d2a524fa
1 /**
2 * collectd - src/interface.c
3 * Copyright (C) 2005-2010 Florian octo Forster
4 * Copyright (C) 2009 Manuel Sanmartin
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
9 *
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.
14 *
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
18 *
19 * Authors:
20 * Florian octo Forster <octo at collectd.org>
21 * Sune Marcher <sm at flork.dk>
22 * Manuel Sanmartin
23 **/
25 #include "collectd.h"
26 #include "common.h"
27 #include "plugin.h"
28 #include "configfile.h"
29 #include "utils_ignorelist.h"
31 #if HAVE_SYS_TYPES_H
32 # include <sys/types.h>
33 #endif
35 /* One cannot include both. This sucks. */
36 #if HAVE_LINUX_IF_H
37 # include <linux/if.h>
38 #elif HAVE_NET_IF_H
39 # include <net/if.h>
40 #endif
42 #if HAVE_LINUX_NETDEVICE_H
43 # include <linux/netdevice.h>
44 #endif
45 #if HAVE_IFADDRS_H
46 # include <ifaddrs.h>
47 #endif
49 #if HAVE_STATGRAB_H
50 # include <statgrab.h>
51 #endif
53 #if HAVE_PERFSTAT
54 # include <sys/protosw.h>
55 # include <libperfstat.h>
56 #endif
58 /*
59 * Various people have reported problems with `getifaddrs' and varying versions
60 * of `glibc'. That's why it's disabled by default. Since more statistics are
61 * available this way one may enable it using the `--enable-getifaddrs' option
62 * of the configure script. -octo
63 */
64 #if KERNEL_LINUX
65 # if !COLLECT_GETIFADDRS
66 # undef HAVE_GETIFADDRS
67 # endif /* !COLLECT_GETIFADDRS */
68 #endif /* KERNEL_LINUX */
70 #if HAVE_PERFSTAT
71 static perfstat_netinterface_t *ifstat;
72 static int nif;
73 static int pnif;
74 #endif /* HAVE_PERFSTAT */
76 #if !HAVE_GETIFADDRS && !KERNEL_LINUX && !HAVE_LIBKSTAT && !HAVE_LIBSTATGRAB && !HAVE_PERFSTAT
77 # error "No applicable input method."
78 #endif
80 /*
81 * (Module-)Global variables
82 */
83 static const char *config_keys[] =
84 {
85 "Interface",
86 "IgnoreSelected",
87 "ReportInactive",
88 NULL
89 };
90 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
92 static ignorelist_t *ignorelist = NULL;
94 static _Bool report_inactive = 1;
96 #ifdef HAVE_LIBKSTAT
97 #define MAX_NUMIF 256
98 extern kstat_ctl_t *kc;
99 static kstat_t *ksp[MAX_NUMIF];
100 static int numif = 0;
101 static _Bool unique_name = 0;
102 #endif /* HAVE_LIBKSTAT */
104 static int interface_config (const char *key, const char *value)
105 {
106 if (ignorelist == NULL)
107 ignorelist = ignorelist_create (/* invert = */ 1);
109 if (strcasecmp (key, "Interface") == 0)
110 {
111 ignorelist_add (ignorelist, value);
112 }
113 else if (strcasecmp (key, "IgnoreSelected") == 0)
114 {
115 int invert = 1;
116 if (IS_TRUE (value))
117 invert = 0;
118 ignorelist_set_invert (ignorelist, invert);
119 }
120 else if (strcasecmp (key, "ReportInactive") == 0)
121 report_inactive = IS_TRUE (value);
122 else if (strcasecmp (key, "UniqueName") == 0)
123 {
124 #ifdef HAVE_LIBKSTAT
125 if (IS_TRUE (value))
126 unique_name = 1;
127 #else
128 WARNING ("interface plugin: the \"UniqueName\" option is only valid on Solaris.");
129 #endif /* HAVE_LIBKSTAT */
130 }
131 else
132 {
133 return (-1);
134 }
136 return (0);
137 }
139 #if HAVE_LIBKSTAT
140 static int interface_init (void)
141 {
142 kstat_t *ksp_chain;
143 derive_t val;
145 numif = 0;
147 if (kc == NULL)
148 return (-1);
150 for (numif = 0, ksp_chain = kc->kc_chain;
151 (numif < MAX_NUMIF) && (ksp_chain != NULL);
152 ksp_chain = ksp_chain->ks_next)
153 {
154 if (strncmp (ksp_chain->ks_class, "net", 3))
155 continue;
156 if (ksp_chain->ks_type != KSTAT_TYPE_NAMED)
157 continue;
158 if (kstat_read (kc, ksp_chain, NULL) == -1)
159 continue;
160 if ((val = get_kstat_value (ksp_chain, "obytes")) == -1LL)
161 continue;
162 ksp[numif++] = ksp_chain;
163 }
165 return (0);
166 } /* int interface_init */
167 #endif /* HAVE_LIBKSTAT */
169 static void if_submit (const char *dev, const char *type,
170 derive_t rx,
171 derive_t tx)
172 {
173 value_t values[2];
174 value_list_t vl = VALUE_LIST_INIT;
176 if (ignorelist_match (ignorelist, dev) != 0)
177 return;
179 values[0].derive = rx;
180 values[1].derive = tx;
182 vl.values = values;
183 vl.values_len = 2;
184 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
185 sstrncpy (vl.plugin, "interface", sizeof (vl.plugin));
186 sstrncpy (vl.plugin_instance, dev, sizeof (vl.plugin_instance));
187 sstrncpy (vl.type, type, sizeof (vl.type));
189 plugin_dispatch_values (&vl);
190 } /* void if_submit */
192 static int interface_read (void)
193 {
194 #if HAVE_GETIFADDRS
195 struct ifaddrs *if_list;
196 struct ifaddrs *if_ptr;
198 /* Darwin/Mac OS X and possible other *BSDs */
199 #if HAVE_STRUCT_IF_DATA
200 # define IFA_DATA if_data
201 # define IFA_RX_BYTES ifi_ibytes
202 # define IFA_TX_BYTES ifi_obytes
203 # define IFA_RX_PACKT ifi_ipackets
204 # define IFA_TX_PACKT ifi_opackets
205 # define IFA_RX_ERROR ifi_ierrors
206 # define IFA_TX_ERROR ifi_oerrors
207 /* #endif HAVE_STRUCT_IF_DATA */
209 #elif HAVE_STRUCT_NET_DEVICE_STATS
210 # define IFA_DATA net_device_stats
211 # define IFA_RX_BYTES rx_bytes
212 # define IFA_TX_BYTES tx_bytes
213 # define IFA_RX_PACKT rx_packets
214 # define IFA_TX_PACKT tx_packets
215 # define IFA_RX_ERROR rx_errors
216 # define IFA_TX_ERROR tx_errors
217 #else
218 # error "No suitable type for `struct ifaddrs->ifa_data' found."
219 #endif
221 struct IFA_DATA *if_data;
223 if (getifaddrs (&if_list) != 0)
224 return (-1);
226 for (if_ptr = if_list; if_ptr != NULL; if_ptr = if_ptr->ifa_next)
227 {
228 if (if_ptr->ifa_addr != NULL && if_ptr->ifa_addr->sa_family == AF_LINK) {
229 if_data = (struct IFA_DATA *) if_ptr->ifa_data;
231 if (!report_inactive && if_data->IFA_RX_PACKT == 0 && if_data->IFA_TX_PACKT == 0)
232 continue;
234 if_submit (if_ptr->ifa_name, "if_octets",
235 if_data->IFA_RX_BYTES,
236 if_data->IFA_TX_BYTES);
237 if_submit (if_ptr->ifa_name, "if_packets",
238 if_data->IFA_RX_PACKT,
239 if_data->IFA_TX_PACKT);
240 if_submit (if_ptr->ifa_name, "if_errors",
241 if_data->IFA_RX_ERROR,
242 if_data->IFA_TX_ERROR);
243 }
244 }
246 freeifaddrs (if_list);
247 /* #endif HAVE_GETIFADDRS */
249 #elif KERNEL_LINUX
250 FILE *fh;
251 char buffer[1024];
252 derive_t incoming, outgoing;
253 char *device;
255 char *dummy;
256 char *fields[16];
257 int numfields;
259 if ((fh = fopen ("/proc/net/dev", "r")) == NULL)
260 {
261 char errbuf[1024];
262 WARNING ("interface plugin: fopen: %s",
263 sstrerror (errno, errbuf, sizeof (errbuf)));
264 return (-1);
265 }
267 while (fgets (buffer, 1024, fh) != NULL)
268 {
269 if (!(dummy = strchr(buffer, ':')))
270 continue;
271 dummy[0] = '\0';
272 dummy++;
274 device = buffer;
275 while (device[0] == ' ')
276 device++;
278 if (device[0] == '\0')
279 continue;
281 numfields = strsplit (dummy, fields, 16);
283 if (numfields < 11)
284 continue;
286 incoming = atoll (fields[1]);
287 outgoing = atoll (fields[9]);
288 if (!report_inactive && incoming == 0 && outgoing == 0)
289 continue;
291 if_submit (device, "if_packets", incoming, outgoing);
293 incoming = atoll (fields[0]);
294 outgoing = atoll (fields[8]);
295 if_submit (device, "if_octets", incoming, outgoing);
297 incoming = atoll (fields[2]);
298 outgoing = atoll (fields[10]);
299 if_submit (device, "if_errors", incoming, outgoing);
301 incoming = atoll (fields[3]);
302 outgoing = atoll (fields[11]);
303 if_submit (device, "if_dropped", incoming, outgoing);
304 }
306 fclose (fh);
307 /* #endif KERNEL_LINUX */
309 #elif HAVE_LIBKSTAT
310 int i;
311 derive_t rx;
312 derive_t tx;
313 char iname[DATA_MAX_NAME_LEN];
315 if (kc == NULL)
316 return (-1);
318 for (i = 0; i < numif; i++)
319 {
320 if (kstat_read (kc, ksp[i], NULL) == -1)
321 continue;
323 if (unique_name)
324 ssnprintf(iname, sizeof(iname), "%s_%d_%s", ksp[i]->ks_module, ksp[i]->ks_instance, ksp[i]->ks_name);
325 else
326 sstrncpy(iname, ksp[i]->ks_name, sizeof(iname));
328 /* try to get 64bit counters */
329 rx = get_kstat_value (ksp[i], "ipackets64");
330 tx = get_kstat_value (ksp[i], "opackets64");
331 /* or fallback to 32bit */
332 if (rx == -1LL)
333 rx = get_kstat_value (ksp[i], "ipackets");
334 if (tx == -1LL)
335 tx = get_kstat_value (ksp[i], "opackets");
336 if (!report_inactive && rx == 0 && tx == 0)
337 continue;
338 if ((rx != -1LL) || (tx != -1LL))
339 if_submit (iname, "if_packets", rx, tx);
341 /* try to get 64bit counters */
342 rx = get_kstat_value (ksp[i], "rbytes64");
343 tx = get_kstat_value (ksp[i], "obytes64");
344 /* or fallback to 32bit */
345 if (rx == -1LL)
346 rx = get_kstat_value (ksp[i], "rbytes");
347 if (tx == -1LL)
348 tx = get_kstat_value (ksp[i], "obytes");
349 if ((rx != -1LL) || (tx != -1LL))
350 if_submit (iname, "if_octets", rx, tx);
352 /* no 64bit error counters yet */
353 rx = get_kstat_value (ksp[i], "ierrors");
354 tx = get_kstat_value (ksp[i], "oerrors");
355 if ((rx != -1LL) || (tx != -1LL))
356 if_submit (iname, "if_errors", rx, tx);
357 }
358 /* #endif HAVE_LIBKSTAT */
360 #elif defined(HAVE_LIBSTATGRAB)
361 sg_network_io_stats *ios;
362 int i, num;
364 ios = sg_get_network_io_stats (&num);
366 for (i = 0; i < num; i++) {
367 if (!report_inactive && ios[i].rx == 0 && ios[i].tx == 0)
368 continue;
369 if_submit (ios[i].interface_name, "if_octets", ios[i].rx, ios[i].tx);
370 }
371 /* #endif HAVE_LIBSTATGRAB */
373 #elif defined(HAVE_PERFSTAT)
374 perfstat_id_t id;
375 int i, ifs;
377 if ((nif = perfstat_netinterface(NULL, NULL, sizeof(perfstat_netinterface_t), 0)) < 0)
378 {
379 char errbuf[1024];
380 WARNING ("interface plugin: perfstat_netinterface: %s",
381 sstrerror (errno, errbuf, sizeof (errbuf)));
382 return (-1);
383 }
385 if (pnif != nif || ifstat == NULL)
386 {
387 free(ifstat);
388 ifstat = malloc(nif * sizeof (*ifstat));
389 }
390 pnif = nif;
392 id.name[0]='\0';
393 if ((ifs = perfstat_netinterface(&id, ifstat, sizeof(perfstat_netinterface_t), nif)) < 0)
394 {
395 char errbuf[1024];
396 WARNING ("interface plugin: perfstat_netinterface (interfaces=%d): %s",
397 nif, sstrerror (errno, errbuf, sizeof (errbuf)));
398 return (-1);
399 }
401 for (i = 0; i < ifs; i++)
402 {
403 if (!report_inactive && ifstat[i].ipackets == 0 && ifstat[i].opackets == 0)
404 continue;
406 if_submit (ifstat[i].name, "if_octets", ifstat[i].ibytes, ifstat[i].obytes);
407 if_submit (ifstat[i].name, "if_packets", ifstat[i].ipackets ,ifstat[i].opackets);
408 if_submit (ifstat[i].name, "if_errors", ifstat[i].ierrors, ifstat[i].oerrors );
409 }
410 #endif /* HAVE_PERFSTAT */
412 return (0);
413 } /* int interface_read */
415 void module_register (void)
416 {
417 plugin_register_config ("interface", interface_config,
418 config_keys, config_keys_num);
419 #if HAVE_LIBKSTAT
420 plugin_register_init ("interface", interface_init);
421 #endif
422 plugin_register_read ("interface", interface_read);
423 } /* void module_register */