2a6a027ddcda64d4e3511c53802906d1c605a2ad
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 "ActiveInterfaceOnly",
88 NULL
89 };
90 static int config_keys_num = 3;
92 static ignorelist_t *ignorelist = NULL;
94 static _Bool active_interface_only = 0;
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, "ActiveInterfaceOnly") == 0)
121 {
122 if (IS_TRUE (value))
123 active_interface_only = 1;
124 else
125 active_interface_only = 0;
126 }
127 else if (strcasecmp (key, "UniqueName") == 0)
128 {
129 #ifdef HAVE_LIBKSTAT
130 if (IS_TRUE (value))
131 unique_name = 1;
132 #else
133 WARNING ("interface plugin: the \"UniqueName\" option is only valid on Solaris.");
134 #endif /* HAVE_LIBKSTAT */
135 }
136 else
137 {
138 return (-1);
139 }
141 return (0);
142 }
144 #if HAVE_LIBKSTAT
145 static int interface_init (void)
146 {
147 kstat_t *ksp_chain;
148 derive_t val;
150 numif = 0;
152 if (kc == NULL)
153 return (-1);
155 for (numif = 0, ksp_chain = kc->kc_chain;
156 (numif < MAX_NUMIF) && (ksp_chain != NULL);
157 ksp_chain = ksp_chain->ks_next)
158 {
159 if (strncmp (ksp_chain->ks_class, "net", 3))
160 continue;
161 if (ksp_chain->ks_type != KSTAT_TYPE_NAMED)
162 continue;
163 if (kstat_read (kc, ksp_chain, NULL) == -1)
164 continue;
165 if ((val = get_kstat_value (ksp_chain, "obytes")) == -1LL)
166 continue;
167 ksp[numif++] = ksp_chain;
168 }
170 return (0);
171 } /* int interface_init */
172 #endif /* HAVE_LIBKSTAT */
174 static void if_submit (const char *dev, const char *type,
175 derive_t rx,
176 derive_t tx)
177 {
178 value_t values[2];
179 value_list_t vl = VALUE_LIST_INIT;
181 if (ignorelist_match (ignorelist, dev) != 0)
182 return;
184 values[0].derive = rx;
185 values[1].derive = tx;
187 vl.values = values;
188 vl.values_len = 2;
189 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
190 sstrncpy (vl.plugin, "interface", sizeof (vl.plugin));
191 sstrncpy (vl.plugin_instance, dev, sizeof (vl.plugin_instance));
192 sstrncpy (vl.type, type, sizeof (vl.type));
194 plugin_dispatch_values (&vl);
195 } /* void if_submit */
197 static int interface_read (void)
198 {
199 #if HAVE_GETIFADDRS
200 struct ifaddrs *if_list;
201 struct ifaddrs *if_ptr;
203 /* Darwin/Mac OS X and possible other *BSDs */
204 #if HAVE_STRUCT_IF_DATA
205 # define IFA_DATA if_data
206 # define IFA_RX_BYTES ifi_ibytes
207 # define IFA_TX_BYTES ifi_obytes
208 # define IFA_RX_PACKT ifi_ipackets
209 # define IFA_TX_PACKT ifi_opackets
210 # define IFA_RX_ERROR ifi_ierrors
211 # define IFA_TX_ERROR ifi_oerrors
212 /* #endif HAVE_STRUCT_IF_DATA */
214 #elif HAVE_STRUCT_NET_DEVICE_STATS
215 # define IFA_DATA net_device_stats
216 # define IFA_RX_BYTES rx_bytes
217 # define IFA_TX_BYTES tx_bytes
218 # define IFA_RX_PACKT rx_packets
219 # define IFA_TX_PACKT tx_packets
220 # define IFA_RX_ERROR rx_errors
221 # define IFA_TX_ERROR tx_errors
222 #else
223 # error "No suitable type for `struct ifaddrs->ifa_data' found."
224 #endif
226 struct IFA_DATA *if_data;
228 if (getifaddrs (&if_list) != 0)
229 return (-1);
231 for (if_ptr = if_list; if_ptr != NULL; if_ptr = if_ptr->ifa_next)
232 {
233 if (if_ptr->ifa_addr != NULL && if_ptr->ifa_addr->sa_family == AF_LINK) {
234 if_data = (struct IFA_DATA *) if_ptr->ifa_data;
236 if ( active_interface_only && if_data->IFA_RX_PACKT == 0 && if_data->IFA_TX_PACKT == 0 )
237 continue;
239 if_submit (if_ptr->ifa_name, "if_octets",
240 if_data->IFA_RX_BYTES,
241 if_data->IFA_TX_BYTES);
242 if_submit (if_ptr->ifa_name, "if_packets",
243 if_data->IFA_RX_PACKT,
244 if_data->IFA_TX_PACKT);
245 if_submit (if_ptr->ifa_name, "if_errors",
246 if_data->IFA_RX_ERROR,
247 if_data->IFA_TX_ERROR);
248 }
249 }
251 freeifaddrs (if_list);
252 /* #endif HAVE_GETIFADDRS */
254 #elif KERNEL_LINUX
255 FILE *fh;
256 char buffer[1024];
257 derive_t incoming, outgoing;
258 char *device;
260 char *dummy;
261 char *fields[16];
262 int numfields;
264 if ((fh = fopen ("/proc/net/dev", "r")) == NULL)
265 {
266 char errbuf[1024];
267 WARNING ("interface plugin: fopen: %s",
268 sstrerror (errno, errbuf, sizeof (errbuf)));
269 return (-1);
270 }
272 while (fgets (buffer, 1024, fh) != NULL)
273 {
274 if (!(dummy = strchr(buffer, ':')))
275 continue;
276 dummy[0] = '\0';
277 dummy++;
279 device = buffer;
280 while (device[0] == ' ')
281 device++;
283 if (device[0] == '\0')
284 continue;
286 numfields = strsplit (dummy, fields, 16);
288 if (numfields < 11)
289 continue;
291 incoming = atoll (fields[1]);
292 outgoing = atoll (fields[9]);
293 if ( active_interface_only && incoming == 0 && outgoing == 0 )
294 continue;
296 if_submit (device, "if_packets", incoming, outgoing);
298 incoming = atoll (fields[0]);
299 outgoing = atoll (fields[8]);
300 if_submit (device, "if_octets", incoming, outgoing);
302 incoming = atoll (fields[2]);
303 outgoing = atoll (fields[10]);
304 if_submit (device, "if_errors", incoming, outgoing);
306 incoming = atoll (fields[3]);
307 outgoing = atoll (fields[11]);
308 if_submit (device, "if_dropped", incoming, outgoing);
309 }
311 fclose (fh);
312 /* #endif KERNEL_LINUX */
314 #elif HAVE_LIBKSTAT
315 int i;
316 derive_t rx;
317 derive_t tx;
318 char iname[DATA_MAX_NAME_LEN];
320 if (kc == NULL)
321 return (-1);
323 for (i = 0; i < numif; i++)
324 {
325 if (kstat_read (kc, ksp[i], NULL) == -1)
326 continue;
328 if (unique_name)
329 ssnprintf(iname, sizeof(iname), "%s_%d_%s", ksp[i]->ks_module, ksp[i]->ks_instance, ksp[i]->ks_name);
330 else
331 sstrncpy(iname, ksp[i]->ks_name, sizeof(iname));
333 /* try to get 64bit counters */
334 rx = get_kstat_value (ksp[i], "ipackets64");
335 tx = get_kstat_value (ksp[i], "opackets64");
336 /* or fallback to 32bit */
337 if (rx == -1LL)
338 rx = get_kstat_value (ksp[i], "ipackets");
339 if (tx == -1LL)
340 tx = get_kstat_value (ksp[i], "opackets");
341 if ( active_interface_only && rx == 0 && tx == 0 )
342 continue;
343 if ((rx != -1LL) || (tx != -1LL))
344 if_submit (iname, "if_packets", rx, tx);
346 /* try to get 64bit counters */
347 rx = get_kstat_value (ksp[i], "rbytes64");
348 tx = get_kstat_value (ksp[i], "obytes64");
349 /* or fallback to 32bit */
350 if (rx == -1LL)
351 rx = get_kstat_value (ksp[i], "rbytes");
352 if (tx == -1LL)
353 tx = get_kstat_value (ksp[i], "obytes");
354 if ((rx != -1LL) || (tx != -1LL))
355 if_submit (iname, "if_octets", rx, tx);
357 /* no 64bit error counters yet */
358 rx = get_kstat_value (ksp[i], "ierrors");
359 tx = get_kstat_value (ksp[i], "oerrors");
360 if ((rx != -1LL) || (tx != -1LL))
361 if_submit (iname, "if_errors", rx, tx);
362 }
363 /* #endif HAVE_LIBKSTAT */
365 #elif defined(HAVE_LIBSTATGRAB)
366 sg_network_io_stats *ios;
367 int i, num;
369 ios = sg_get_network_io_stats (&num);
371 for (i = 0; i < num; i++) {
372 if ( active_interface_only && ios[i].rx == 0 && ios[i].tx == 0 )
373 continue;
374 if_submit (ios[i].interface_name, "if_octets", ios[i].rx, ios[i].tx);
375 }
376 /* #endif HAVE_LIBSTATGRAB */
378 #elif defined(HAVE_PERFSTAT)
379 perfstat_id_t id;
380 int i, ifs;
382 if ((nif = perfstat_netinterface(NULL, NULL, sizeof(perfstat_netinterface_t), 0)) < 0)
383 {
384 char errbuf[1024];
385 WARNING ("interface plugin: perfstat_netinterface: %s",
386 sstrerror (errno, errbuf, sizeof (errbuf)));
387 return (-1);
388 }
390 if (pnif != nif || ifstat == NULL)
391 {
392 free(ifstat);
393 ifstat = malloc(nif * sizeof (*ifstat));
394 }
395 pnif = nif;
397 id.name[0]='\0';
398 if ((ifs = perfstat_netinterface(&id, ifstat, sizeof(perfstat_netinterface_t), nif)) < 0)
399 {
400 char errbuf[1024];
401 WARNING ("interface plugin: perfstat_netinterface (interfaces=%d): %s",
402 nif, sstrerror (errno, errbuf, sizeof (errbuf)));
403 return (-1);
404 }
406 for (i = 0; i < ifs; i++)
407 {
408 if ( active_interface_only && ifstat[i].ipackets == 0 && ifstat[i].opackets == 0 )
409 continue;
411 if_submit (ifstat[i].name, "if_octets", ifstat[i].ibytes, ifstat[i].obytes);
412 if_submit (ifstat[i].name, "if_packets", ifstat[i].ipackets ,ifstat[i].opackets);
413 if_submit (ifstat[i].name, "if_errors", ifstat[i].ierrors, ifstat[i].oerrors );
414 }
415 #endif /* HAVE_PERFSTAT */
417 return (0);
418 } /* int interface_read */
420 void module_register (void)
421 {
422 plugin_register_config ("interface", interface_config,
423 config_keys, config_keys_num);
424 #if HAVE_LIBKSTAT
425 plugin_register_init ("interface", interface_init);
426 #endif
427 plugin_register_read ("interface", interface_read);
428 } /* void module_register */