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 NULL
88 };
89 static int config_keys_num = 2;
91 static ignorelist_t *ignorelist = NULL;
93 #ifdef HAVE_LIBKSTAT
94 #define MAX_NUMIF 256
95 extern kstat_ctl_t *kc;
96 static kstat_t *ksp[MAX_NUMIF];
97 static int numif = 0;
98 #endif /* HAVE_LIBKSTAT */
100 static int interface_config (const char *key, const char *value)
101 {
102 if (ignorelist == NULL)
103 ignorelist = ignorelist_create (/* invert = */ 1);
105 if (strcasecmp (key, "Interface") == 0)
106 {
107 ignorelist_add (ignorelist, value);
108 }
109 else if (strcasecmp (key, "IgnoreSelected") == 0)
110 {
111 int invert = 1;
112 if (IS_TRUE (value))
113 invert = 0;
114 ignorelist_set_invert (ignorelist, invert);
115 }
116 else
117 {
118 return (-1);
119 }
121 return (0);
122 }
124 #if HAVE_LIBKSTAT
125 static int interface_init (void)
126 {
127 kstat_t *ksp_chain;
128 derive_t val;
130 numif = 0;
132 if (kc == NULL)
133 return (-1);
135 for (numif = 0, ksp_chain = kc->kc_chain;
136 (numif < MAX_NUMIF) && (ksp_chain != NULL);
137 ksp_chain = ksp_chain->ks_next)
138 {
139 if (strncmp (ksp_chain->ks_class, "net", 3))
140 continue;
141 if (ksp_chain->ks_type != KSTAT_TYPE_NAMED)
142 continue;
143 if (kstat_read (kc, ksp_chain, NULL) == -1)
144 continue;
145 if ((val = get_kstat_value (ksp_chain, "obytes")) == -1LL)
146 continue;
147 ksp[numif++] = ksp_chain;
148 }
150 return (0);
151 } /* int interface_init */
152 #endif /* HAVE_LIBKSTAT */
154 static void if_submit (const char *dev, const char *type,
155 derive_t rx,
156 derive_t tx)
157 {
158 value_t values[2];
159 value_list_t vl = VALUE_LIST_INIT;
161 if (ignorelist_match (ignorelist, dev) != 0)
162 return;
164 values[0].derive = rx;
165 values[1].derive = tx;
167 vl.values = values;
168 vl.values_len = 2;
169 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
170 sstrncpy (vl.plugin, "interface", sizeof (vl.plugin));
171 sstrncpy (vl.plugin_instance, dev, sizeof (vl.plugin_instance));
172 sstrncpy (vl.type, type, sizeof (vl.type));
174 plugin_dispatch_values (&vl);
175 } /* void if_submit */
177 static int interface_read (void)
178 {
179 #if HAVE_GETIFADDRS
180 struct ifaddrs *if_list;
181 struct ifaddrs *if_ptr;
183 /* Darin/Mac OS X and possible other *BSDs */
184 #if HAVE_STRUCT_IF_DATA
185 # define IFA_DATA if_data
186 # define IFA_RX_BYTES ifi_ibytes
187 # define IFA_TX_BYTES ifi_obytes
188 # define IFA_RX_PACKT ifi_ipackets
189 # define IFA_TX_PACKT ifi_opackets
190 # define IFA_RX_ERROR ifi_ierrors
191 # define IFA_TX_ERROR ifi_oerrors
192 /* #endif HAVE_STRUCT_IF_DATA */
194 #elif HAVE_STRUCT_NET_DEVICE_STATS
195 # define IFA_DATA net_device_stats
196 # define IFA_RX_BYTES rx_bytes
197 # define IFA_TX_BYTES tx_bytes
198 # define IFA_RX_PACKT rx_packets
199 # define IFA_TX_PACKT tx_packets
200 # define IFA_RX_ERROR rx_errors
201 # define IFA_TX_ERROR tx_errors
202 #else
203 # error "No suitable type for `struct ifaddrs->ifa_data' found."
204 #endif
206 struct IFA_DATA *if_data;
208 if (getifaddrs (&if_list) != 0)
209 return (-1);
211 for (if_ptr = if_list; if_ptr != NULL; if_ptr = if_ptr->ifa_next)
212 {
213 if (if_ptr->ifa_addr != NULL && if_ptr->ifa_addr->sa_family == AF_LINK) {
214 if_data = (struct IFA_DATA *) if_ptr->ifa_data;
216 if_submit (if_ptr->ifa_name, "if_octets",
217 if_data->IFA_RX_BYTES,
218 if_data->IFA_TX_BYTES);
219 if_submit (if_ptr->ifa_name, "if_packets",
220 if_data->IFA_RX_PACKT,
221 if_data->IFA_TX_PACKT);
222 if_submit (if_ptr->ifa_name, "if_errors",
223 if_data->IFA_RX_ERROR,
224 if_data->IFA_TX_ERROR);
225 }
226 }
228 freeifaddrs (if_list);
229 /* #endif HAVE_GETIFADDRS */
231 #elif KERNEL_LINUX
232 FILE *fh;
233 char buffer[1024];
234 derive_t incoming, outgoing;
235 char *device;
237 char *dummy;
238 char *fields[16];
239 int numfields;
241 if ((fh = fopen ("/proc/net/dev", "r")) == NULL)
242 {
243 char errbuf[1024];
244 WARNING ("interface plugin: fopen: %s",
245 sstrerror (errno, errbuf, sizeof (errbuf)));
246 return (-1);
247 }
249 while (fgets (buffer, 1024, fh) != NULL)
250 {
251 if (!(dummy = strchr(buffer, ':')))
252 continue;
253 dummy[0] = '\0';
254 dummy++;
256 device = buffer;
257 while (device[0] == ' ')
258 device++;
260 if (device[0] == '\0')
261 continue;
263 numfields = strsplit (dummy, fields, 16);
265 if (numfields < 11)
266 continue;
268 incoming = atoll (fields[0]);
269 outgoing = atoll (fields[8]);
270 if_submit (device, "if_octets", incoming, outgoing);
272 incoming = atoll (fields[1]);
273 outgoing = atoll (fields[9]);
274 if_submit (device, "if_packets", incoming, outgoing);
276 incoming = atoll (fields[2]);
277 outgoing = atoll (fields[10]);
278 if_submit (device, "if_errors", incoming, outgoing);
279 }
281 fclose (fh);
282 /* #endif KERNEL_LINUX */
284 #elif HAVE_LIBKSTAT
285 int i;
286 derive_t rx;
287 derive_t tx;
289 if (kc == NULL)
290 return (-1);
292 for (i = 0; i < numif; i++)
293 {
294 if (kstat_read (kc, ksp[i], NULL) == -1)
295 continue;
297 /* try to get 64bit counters */
298 rx = get_kstat_value (ksp[i], "rbytes64");
299 tx = get_kstat_value (ksp[i], "obytes64");
300 /* or fallback to 32bit */
301 if (rx == -1LL)
302 rx = get_kstat_value (ksp[i], "rbytes");
303 if (tx == -1LL)
304 tx = get_kstat_value (ksp[i], "obytes");
305 if ((rx != -1LL) || (tx != -1LL))
306 if_submit (ksp[i]->ks_name, "if_octets", rx, tx);
308 /* try to get 64bit counters */
309 rx = get_kstat_value (ksp[i], "ipackets64");
310 tx = get_kstat_value (ksp[i], "opackets64");
311 /* or fallback to 32bit */
312 if (rx == -1LL)
313 rx = get_kstat_value (ksp[i], "ipackets");
314 if (tx == -1LL)
315 tx = get_kstat_value (ksp[i], "opackets");
316 if ((rx != -1LL) || (tx != -1LL))
317 if_submit (ksp[i]->ks_name, "if_packets", rx, tx);
319 /* no 64bit error counters yet */
320 rx = get_kstat_value (ksp[i], "ierrors");
321 tx = get_kstat_value (ksp[i], "oerrors");
322 if ((rx != -1LL) || (tx != -1LL))
323 if_submit (ksp[i]->ks_name, "if_errors", rx, tx);
324 }
325 /* #endif HAVE_LIBKSTAT */
327 #elif defined(HAVE_LIBSTATGRAB)
328 sg_network_io_stats *ios;
329 int i, num;
331 ios = sg_get_network_io_stats (&num);
333 for (i = 0; i < num; i++)
334 if_submit (ios[i].interface_name, "if_octets", ios[i].rx, ios[i].tx);
335 /* #endif HAVE_LIBSTATGRAB */
337 #elif defined(HAVE_PERFSTAT)
338 perfstat_id_t id;
339 int i, ifs;
341 if ((nif = perfstat_netinterface(NULL, NULL, sizeof(perfstat_netinterface_t), 0)) < 0)
342 {
343 char errbuf[1024];
344 WARNING ("interface plugin: perfstat_netinterface: %s",
345 sstrerror (errno, errbuf, sizeof (errbuf)));
346 return (-1);
347 }
349 if (pnif != nif || ifstat == NULL)
350 {
351 if (ifstat != NULL)
352 free(ifstat);
353 ifstat = malloc(nif * sizeof(perfstat_netinterface_t));
354 }
355 pnif = nif;
357 id.name[0]='\0';
358 if ((ifs = perfstat_netinterface(&id, ifstat, sizeof(perfstat_netinterface_t), nif)) < 0)
359 {
360 char errbuf[1024];
361 WARNING ("interface plugin: perfstat_netinterface (interfaces=%d): %s",
362 nif, sstrerror (errno, errbuf, sizeof (errbuf)));
363 return (-1);
364 }
366 for (i = 0; i < ifs; i++)
367 {
368 if_submit (ifstat[i].name, "if_octets", ifstat[i].ibytes, ifstat[i].obytes);
369 if_submit (ifstat[i].name, "if_packets", ifstat[i].ipackets ,ifstat[i].opackets);
370 if_submit (ifstat[i].name, "if_errors", ifstat[i].ierrors, ifstat[i].oerrors );
371 }
372 #endif /* HAVE_PERFSTAT */
374 return (0);
375 } /* int interface_read */
377 void module_register (void)
378 {
379 plugin_register_config ("interface", interface_config,
380 config_keys, config_keys_num);
381 #if HAVE_LIBKSTAT
382 plugin_register_init ("interface", interface_init);
383 #endif
384 plugin_register_read ("interface", interface_read);
385 } /* void module_register */