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 verplant.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
34 #if HAVE_SYS_SOCKET_H
35 # include <sys/socket.h>
36 #endif
38 /* One cannot include both. This sucks. */
39 #if HAVE_LINUX_IF_H
40 # include <linux/if.h>
41 #elif HAVE_NET_IF_H
42 # include <net/if.h>
43 #endif
45 #if HAVE_LINUX_NETDEVICE_H
46 # include <linux/netdevice.h>
47 #endif
48 #if HAVE_IFADDRS_H
49 # include <ifaddrs.h>
50 #endif
52 #if HAVE_STATGRAB_H
53 # include <statgrab.h>
54 #endif
56 #if HAVE_PERFSTAT
57 # include <sys/protosw.h>
58 # include <libperfstat.h>
59 #endif
61 /*
62 * Various people have reported problems with `getifaddrs' and varying versions
63 * of `glibc'. That's why it's disabled by default. Since more statistics are
64 * available this way one may enable it using the `--enable-getifaddrs' option
65 * of the configure script. -octo
66 */
67 #if KERNEL_LINUX
68 # if !COLLECT_GETIFADDRS
69 # undef HAVE_GETIFADDRS
70 # endif /* !COLLECT_GETIFADDRS */
71 #endif /* KERNEL_LINUX */
73 #if HAVE_PERFSTAT
74 static perfstat_netinterface_t *ifstat;
75 static int nif;
76 static int pnif;
77 #endif /* HAVE_PERFSTAT */
79 #if !HAVE_GETIFADDRS && !KERNEL_LINUX && !HAVE_LIBKSTAT && !HAVE_LIBSTATGRAB && !HAVE_PERFSTAT
80 # error "No applicable input method."
81 #endif
83 /*
84 * (Module-)Global variables
85 */
86 static const char *config_keys[] =
87 {
88 "Interface",
89 "IgnoreSelected",
90 NULL
91 };
92 static int config_keys_num = 2;
94 static ignorelist_t *ignorelist = NULL;
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 #endif /* HAVE_LIBKSTAT */
103 static int interface_config (const char *key, const char *value)
104 {
105 if (ignorelist == NULL)
106 ignorelist = ignorelist_create (/* invert = */ 1);
108 if (strcasecmp (key, "Interface") == 0)
109 {
110 ignorelist_add (ignorelist, value);
111 }
112 else if (strcasecmp (key, "IgnoreSelected") == 0)
113 {
114 int invert = 1;
115 if (IS_TRUE (value))
116 invert = 0;
117 ignorelist_set_invert (ignorelist, invert);
118 }
119 else
120 {
121 return (-1);
122 }
124 return (0);
125 }
127 #if HAVE_LIBKSTAT
128 static int interface_init (void)
129 {
130 kstat_t *ksp_chain;
131 derive_t val;
133 numif = 0;
135 if (kc == NULL)
136 return (-1);
138 for (numif = 0, ksp_chain = kc->kc_chain;
139 (numif < MAX_NUMIF) && (ksp_chain != NULL);
140 ksp_chain = ksp_chain->ks_next)
141 {
142 if (strncmp (ksp_chain->ks_class, "net", 3))
143 continue;
144 /* Ignore kstat entry if not the regular statistic set. This
145 * avoids problems with "bogus" interfaces, such as
146 * "wrsmd<num>" */
147 if (strncmp (ksp_chain->ks_name, ksp_chain->ks_module,
148 strlen (ksp_chain->ks_module)) != 0)
149 continue;
150 if (ksp_chain->ks_type != KSTAT_TYPE_NAMED)
151 continue;
152 if (kstat_read (kc, ksp_chain, NULL) == -1)
153 continue;
154 if ((val = get_kstat_value (ksp_chain, "ifspeed")) == -1LL)
155 continue;
156 ksp[numif++] = ksp_chain;
157 }
159 return (0);
160 } /* int interface_init */
161 #endif /* HAVE_LIBKSTAT */
163 static void if_submit (const char *dev, const char *type,
164 derive_t rx,
165 derive_t tx)
166 {
167 value_t values[2];
168 value_list_t vl = VALUE_LIST_INIT;
170 if (ignorelist_match (ignorelist, dev) != 0)
171 return;
173 values[0].derive = rx;
174 values[1].derive = tx;
176 vl.values = values;
177 vl.values_len = 2;
178 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
179 sstrncpy (vl.plugin, "interface", sizeof (vl.plugin));
180 sstrncpy (vl.plugin_instance, dev, sizeof (vl.plugin_instance));
181 sstrncpy (vl.type, type, sizeof (vl.type));
183 plugin_dispatch_values (&vl);
184 } /* void if_submit */
186 static int interface_read (void)
187 {
188 #if HAVE_GETIFADDRS
189 struct ifaddrs *if_list;
190 struct ifaddrs *if_ptr;
192 /* Darin/Mac OS X and possible other *BSDs */
193 #if HAVE_STRUCT_IF_DATA
194 # define IFA_DATA if_data
195 # define IFA_RX_BYTES ifi_ibytes
196 # define IFA_TX_BYTES ifi_obytes
197 # define IFA_RX_PACKT ifi_ipackets
198 # define IFA_TX_PACKT ifi_opackets
199 # define IFA_RX_ERROR ifi_ierrors
200 # define IFA_TX_ERROR ifi_oerrors
201 /* #endif HAVE_STRUCT_IF_DATA */
203 #elif HAVE_STRUCT_NET_DEVICE_STATS
204 # define IFA_DATA net_device_stats
205 # define IFA_RX_BYTES rx_bytes
206 # define IFA_TX_BYTES tx_bytes
207 # define IFA_RX_PACKT rx_packets
208 # define IFA_TX_PACKT tx_packets
209 # define IFA_RX_ERROR rx_errors
210 # define IFA_TX_ERROR tx_errors
211 #else
212 # error "No suitable type for `struct ifaddrs->ifa_data' found."
213 #endif
215 struct IFA_DATA *if_data;
217 if (getifaddrs (&if_list) != 0)
218 return (-1);
220 for (if_ptr = if_list; if_ptr != NULL; if_ptr = if_ptr->ifa_next)
221 {
222 if ((if_data = (struct IFA_DATA *) if_ptr->ifa_data) == NULL)
223 continue;
225 if_submit (if_ptr->ifa_name, "if_octets",
226 if_data->IFA_RX_BYTES,
227 if_data->IFA_TX_BYTES);
228 if_submit (if_ptr->ifa_name, "if_packets",
229 if_data->IFA_RX_PACKT,
230 if_data->IFA_TX_PACKT);
231 if_submit (if_ptr->ifa_name, "if_errors",
232 if_data->IFA_RX_ERROR,
233 if_data->IFA_TX_ERROR);
234 }
236 freeifaddrs (if_list);
237 /* #endif HAVE_GETIFADDRS */
239 #elif KERNEL_LINUX
240 FILE *fh;
241 char buffer[1024];
242 derive_t incoming, outgoing;
243 char *device;
245 char *dummy;
246 char *fields[16];
247 int numfields;
249 if ((fh = fopen ("/proc/net/dev", "r")) == NULL)
250 {
251 char errbuf[1024];
252 WARNING ("interface plugin: fopen: %s",
253 sstrerror (errno, errbuf, sizeof (errbuf)));
254 return (-1);
255 }
257 while (fgets (buffer, 1024, fh) != NULL)
258 {
259 if (!(dummy = strchr(buffer, ':')))
260 continue;
261 dummy[0] = '\0';
262 dummy++;
264 device = buffer;
265 while (device[0] == ' ')
266 device++;
268 if (device[0] == '\0')
269 continue;
271 numfields = strsplit (dummy, fields, 16);
273 if (numfields < 11)
274 continue;
276 incoming = atoll (fields[0]);
277 outgoing = atoll (fields[8]);
278 if_submit (device, "if_octets", incoming, outgoing);
280 incoming = atoll (fields[1]);
281 outgoing = atoll (fields[9]);
282 if_submit (device, "if_packets", incoming, outgoing);
284 incoming = atoll (fields[2]);
285 outgoing = atoll (fields[10]);
286 if_submit (device, "if_errors", incoming, outgoing);
287 }
289 fclose (fh);
290 /* #endif KERNEL_LINUX */
292 #elif HAVE_LIBKSTAT
293 int i;
294 derive_t rx;
295 derive_t tx;
297 if (kc == NULL)
298 return (-1);
300 for (i = 0; i < numif; i++)
301 {
302 if (kstat_read (kc, ksp[i], NULL) == -1)
303 continue;
305 /* try to get 64bit counters */
306 rx = get_kstat_value (ksp[i], "rbytes64");
307 tx = get_kstat_value (ksp[i], "obytes64");
308 /* or fallback to 32bit */
309 if (rx == -1LL)
310 rx = get_kstat_value (ksp[i], "rbytes");
311 if (tx == -1LL)
312 tx = get_kstat_value (ksp[i], "obytes");
313 if ((rx != -1LL) || (tx != -1LL))
314 if_submit (ksp[i]->ks_name, "if_octets", rx, tx);
316 /* try to get 64bit counters */
317 rx = get_kstat_value (ksp[i], "ipackets64");
318 tx = get_kstat_value (ksp[i], "opackets64");
319 /* or fallback to 32bit */
320 if (rx == -1LL)
321 rx = get_kstat_value (ksp[i], "ipackets");
322 if (tx == -1LL)
323 tx = get_kstat_value (ksp[i], "opackets");
324 if ((rx != -1LL) || (tx != -1LL))
325 if_submit (ksp[i]->ks_name, "if_packets", rx, tx);
327 /* no 64bit error counters yet */
328 rx = get_kstat_value (ksp[i], "ierrors");
329 tx = get_kstat_value (ksp[i], "oerrors");
330 if ((rx != -1LL) || (tx != -1LL))
331 if_submit (ksp[i]->ks_name, "if_errors", rx, tx);
332 }
333 /* #endif HAVE_LIBKSTAT */
335 #elif defined(HAVE_LIBSTATGRAB)
336 sg_network_io_stats *ios;
337 int i, num;
339 ios = sg_get_network_io_stats (&num);
341 for (i = 0; i < num; i++)
342 if_submit (ios[i].interface_name, "if_octets", ios[i].rx, ios[i].tx);
343 /* #endif HAVE_LIBSTATGRAB */
345 #elif defined(HAVE_PERFSTAT)
346 perfstat_id_t id;
347 int i, ifs;
349 if ((nif = perfstat_netinterface(NULL, NULL, sizeof(perfstat_netinterface_t), 0)) < 0)
350 {
351 char errbuf[1024];
352 WARNING ("interface plugin: perfstat_netinterface: %s",
353 sstrerror (errno, errbuf, sizeof (errbuf)));
354 return (-1);
355 }
357 if (pnif != nif || ifstat == NULL)
358 {
359 if (ifstat != NULL)
360 free(ifstat);
361 ifstat = malloc(nif * sizeof(perfstat_netinterface_t));
362 }
363 pnif = nif;
365 id.name[0]='\0';
366 if ((ifs = perfstat_netinterface(&id, ifstat, sizeof(perfstat_netinterface_t), nif)) < 0)
367 {
368 char errbuf[1024];
369 WARNING ("interface plugin: perfstat_netinterface (interfaces=%d): %s",
370 nif, sstrerror (errno, errbuf, sizeof (errbuf)));
371 return (-1);
372 }
374 for (i = 0; i < ifs; i++)
375 {
376 if_submit (ifstat[i].name, "if_octets", ifstat[i].ibytes, ifstat[i].obytes);
377 if_submit (ifstat[i].name, "if_packets", ifstat[i].ipackets ,ifstat[i].opackets);
378 if_submit (ifstat[i].name, "if_errors", ifstat[i].ierrors, ifstat[i].oerrors );
379 }
380 #endif /* HAVE_PERFSTAT */
382 return (0);
383 } /* int interface_read */
385 void module_register (void)
386 {
387 plugin_register_config ("interface", interface_config,
388 config_keys, config_keys_num);
389 #if HAVE_LIBKSTAT
390 plugin_register_init ("interface", interface_init);
391 #endif
392 plugin_register_read ("interface", interface_read);
393 } /* void module_register */