5fc55d757eecf414fb2e9d232289b38822f1f450
1 /**
2 * collectd - src/traffic.c
3 * Copyright (C) 2005-2007 Florian octo Forster
4 *
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.
8 *
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.
13 *
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
17 *
18 * Authors:
19 * Florian octo Forster <octo at verplant.org>
20 * Sune Marcher <sm at flork.dk>
21 **/
23 #include "collectd.h"
24 #include "common.h"
25 #include "plugin.h"
26 #include "configfile.h"
28 #if HAVE_SYS_TYPES_H
29 # include <sys/types.h>
30 #endif
31 #if HAVE_SYS_SOCKET_H
32 # include <sys/socket.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 /*
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
54 */
55 #if KERNEL_LINUX
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 TRAFFIC_HAVE_READ 1
63 #else
64 # define TRAFFIC_HAVE_READ 0
65 #endif
67 /*
68 * (Module-)Global variables
69 */
70 /* 2^32 = 4294967296 = ~4.2GByte/s = ~34GBit/s */
71 static data_source_t octets_dsrc[2] =
72 {
73 {"rx", DS_TYPE_COUNTER, 0, 4294967295.0},
74 {"tx", DS_TYPE_COUNTER, 0, 4294967295.0}
75 };
77 static data_set_t octets_ds =
78 {
79 "if_octets", 2, octets_dsrc
80 };
82 static data_source_t packets_dsrc[2] =
83 {
84 {"rx", DS_TYPE_COUNTER, 0, 4294967295.0},
85 {"tx", DS_TYPE_COUNTER, 0, 4294967295.0}
86 };
88 static data_set_t packets_ds =
89 {
90 "if_packets", 2, packets_dsrc
91 };
93 static data_source_t errors_dsrc[2] =
94 {
95 {"rx", DS_TYPE_COUNTER, 0, 4294967295.0},
96 {"tx", DS_TYPE_COUNTER, 0, 4294967295.0}
97 };
99 static data_set_t errors_ds =
100 {
101 "if_errors", 2, errors_dsrc
102 };
104 static const char *config_keys[] =
105 {
106 "Interface",
107 "IgnoreSelected",
108 NULL
109 };
110 static int config_keys_num = 2;
112 static char **if_list = NULL;
113 static int if_list_num = 0;
114 /*
115 * if_list_action:
116 * 0 => default is to collect selected interface
117 * 1 => ignore selcted interfaces
118 */
119 static int if_list_action = 0;
121 #ifdef HAVE_LIBKSTAT
122 #define MAX_NUMIF 256
123 extern kstat_ctl_t *kc;
124 static kstat_t *ksp[MAX_NUMIF];
125 static int numif = 0;
126 #endif /* HAVE_LIBKSTAT */
128 static int interface_config (const char *key, const char *value)
129 {
130 char **temp;
132 if (strcasecmp (key, "Interface") == 0)
133 {
134 temp = (char **) realloc (if_list, (if_list_num + 1) * sizeof (char *));
135 if (temp == NULL)
136 {
137 syslog (LOG_EMERG, "Cannot allocate more memory.");
138 return (1);
139 }
140 if_list = temp;
142 if ((if_list[if_list_num] = strdup (value)) == NULL)
143 {
144 syslog (LOG_EMERG, "Cannot allocate memory.");
145 return (1);
146 }
147 if_list_num++;
148 }
149 else if (strcasecmp (key, "IgnoreSelected") == 0)
150 {
151 if ((strcasecmp (value, "True") == 0)
152 || (strcasecmp (value, "Yes") == 0)
153 || (strcasecmp (value, "On") == 0))
154 if_list_action = 1;
155 else
156 if_list_action = 0;
157 }
158 else
159 {
160 return (-1);
161 }
163 return (0);
164 }
166 #if HAVE_LIBKSTAT
167 static int traffic_init (void)
168 {
169 #if HAVE_LIBKSTAT
170 kstat_t *ksp_chain;
171 unsigned long long val;
173 numif = 0;
175 if (kc == NULL)
176 return (-1);
178 for (numif = 0, ksp_chain = kc->kc_chain;
179 (numif < MAX_NUMIF) && (ksp_chain != NULL);
180 ksp_chain = ksp_chain->ks_next)
181 {
182 if (strncmp (ksp_chain->ks_class, "net", 3))
183 continue;
184 if (ksp_chain->ks_type != KSTAT_TYPE_NAMED)
185 continue;
186 if (kstat_read (kc, ksp_chain, NULL) == -1)
187 continue;
188 if ((val = get_kstat_value (ksp_chain, "obytes")) == -1LL)
189 continue;
190 ksp[numif++] = ksp_chain;
191 }
192 #endif /* HAVE_LIBKSTAT */
194 return (0);
195 } /* int traffic_init */
196 #endif /* HAVE_LIBKSTAT */
198 /*
199 * Check if this interface/instance should be ignored. This is called from
200 * both, `submit' and `write' to give client and server the ability to
201 * ignore certain stuff..
202 */
203 static int check_ignore_if (const char *interface)
204 {
205 int i;
207 /* If no interfaces are given collect all interfaces. Mostly to be
208 * backwards compatible, but also because this is much easier. */
209 if (if_list_num < 1)
210 return (0);
212 for (i = 0; i < if_list_num; i++)
213 if (strcasecmp (interface, if_list[i]) == 0)
214 return (if_list_action);
215 return (1 - if_list_action);
216 } /* int check_ignore_if */
218 #if TRAFFIC_HAVE_READ
219 static void if_submit (const char *dev, const char *type,
220 unsigned long long rx,
221 unsigned long long tx)
222 {
223 value_t values[2];
224 value_list_t vl = VALUE_LIST_INIT;
226 if (check_ignore_if (dev))
227 return;
229 values[0].counter = rx;
230 values[1].counter = tx;
232 vl.values = values;
233 vl.values_len = 2;
234 vl.time = time (NULL);
235 strcpy (vl.host, hostname);
236 strcpy (vl.plugin, "interface");
237 strncpy (vl.type_instance, dev, sizeof (vl.type_instance));
239 plugin_dispatch_values (type, &vl);
240 } /* void if_submit */
242 static int traffic_read (void)
243 {
244 #if HAVE_GETIFADDRS
245 struct ifaddrs *if_list;
246 struct ifaddrs *if_ptr;
248 /* Darin/Mac OS X and possible other *BSDs */
249 #if HAVE_STRUCT_IF_DATA
250 # define IFA_DATA if_data
251 # define IFA_RX_BYTES ifi_ibytes
252 # define IFA_TX_BYTES ifi_obytes
253 # define IFA_RX_PACKT ifi_ipackets
254 # define IFA_TX_PACKT ifi_opackets
255 # define IFA_RX_ERROR ifi_ierrors
256 # define IFA_TX_ERROR ifi_oerrors
257 /* #endif HAVE_STRUCT_IF_DATA */
259 #elif HAVE_STRUCT_NET_DEVICE_STATS
260 # define IFA_DATA net_device_stats
261 # define IFA_RX_BYTES rx_bytes
262 # define IFA_TX_BYTES tx_bytes
263 # define IFA_RX_PACKT rx_packets
264 # define IFA_TX_PACKT tx_packets
265 # define IFA_RX_ERROR rx_errors
266 # define IFA_TX_ERROR tx_errors
267 #else
268 # error "No suitable type for `struct ifaddrs->ifa_data' found."
269 #endif
271 struct IFA_DATA *if_data;
273 if (getifaddrs (&if_list) != 0)
274 return (-1);
276 for (if_ptr = if_list; if_ptr != NULL; if_ptr = if_ptr->ifa_next)
277 {
278 if ((if_data = (struct IFA_DATA *) if_ptr->ifa_data) == NULL)
279 continue;
281 if_submit (if_ptr->ifa_name, "if_octets",
282 if_data->IFA_RX_BYTES,
283 if_data->IFA_TX_BYTES);
284 if_submit (if_ptr->ifa_name, "if_packets",
285 if_data->IFA_RX_PACKT,
286 if_data->IFA_TX_PACKT);
287 if_submit (if_ptr->ifa_name, "if_errors",
288 if_data->IFA_RX_ERROR,
289 if_data->IFA_TX_ERROR);
290 }
292 freeifaddrs (if_list);
293 /* #endif HAVE_GETIFADDRS */
295 #elif KERNEL_LINUX
296 FILE *fh;
297 char buffer[1024];
298 unsigned long long incoming, outgoing;
299 char *device;
301 char *dummy;
302 char *fields[16];
303 int numfields;
305 if ((fh = fopen ("/proc/net/dev", "r")) == NULL)
306 {
307 syslog (LOG_WARNING, "traffic: fopen: %s", strerror (errno));
308 return (-1);
309 }
311 while (fgets (buffer, 1024, fh) != NULL)
312 {
313 if (!(dummy = strchr(buffer, ':')))
314 continue;
315 dummy[0] = '\0';
316 dummy++;
318 device = buffer;
319 while (device[0] == ' ')
320 device++;
322 if (device[0] == '\0')
323 continue;
325 numfields = strsplit (dummy, fields, 16);
327 if (numfields < 11)
328 continue;
330 incoming = atoll (fields[0]);
331 outgoing = atoll (fields[8]);
332 if_submit (device, "if_octets", incoming, outgoing);
334 incoming = atoll (fields[1]);
335 outgoing = atoll (fields[9]);
336 if_submit (device, "if_packets", incoming, outgoing);
338 incoming = atoll (fields[2]);
339 outgoing = atoll (fields[10]);
340 if_submit (device, "if_errors", incoming, outgoing);
341 }
343 fclose (fh);
344 /* #endif KERNEL_LINUX */
346 #elif HAVE_LIBKSTAT
347 int i;
348 unsigned long long rx;
349 unsigned long long tx;
351 if (kc == NULL)
352 return;
354 for (i = 0; i < numif; i++)
355 {
356 if (kstat_read (kc, ksp[i], NULL) == -1)
357 continue;
359 rx = get_kstat_value (ksp[i], "rbytes");
360 tx = get_kstat_value (ksp[i], "obytes");
361 if ((rx != -1LL) || (tx != -1LL))
362 if_submit (ksp[i]->ks_name, "if_octets", rx, tx);
364 rx = get_kstat_value (ksp[i], "ipackets");
365 tx = get_kstat_value (ksp[i], "opackets");
366 if ((rx != -1LL) || (tx != -1LL))
367 if_submit (ksp[i]->ks_name, "if_packets", rx, tx);
369 rx = get_kstat_value (ksp[i], "ierrors");
370 tx = get_kstat_value (ksp[i], "oerrors");
371 if ((rx != -1LL) || (tx != -1LL))
372 if_submit (ksp[i]->ks_name, "if_errors", rx, tx);
373 }
374 /* #endif HAVE_LIBKSTAT */
376 #elif defined(HAVE_LIBSTATGRAB)
377 sg_network_io_stats *ios;
378 int i, num;
380 ios = sg_get_network_io_stats (&num);
382 for (i = 0; i < num; i++)
383 if_submit (ios[i].interface_name, "if_octets", ios[i].rx, ios[i].tx);
384 #endif /* HAVE_LIBSTATGRAB */
386 return (0);
387 } /* int traffic_read */
388 #endif /* TRAFFIC_HAVE_READ */
390 void module_register (void)
391 {
392 plugin_register_data_set (&octets_ds);
393 plugin_register_data_set (&packets_ds);
394 plugin_register_data_set (&errors_ds);
396 plugin_register_config ("interface", interface_config,
397 config_keys, config_keys_num);
399 #if HAVE_LIBKSTAT
400 plugin_register_init ("interface", traffic_init);
401 #endif
403 #if TRAFFIC_HAVE_READ
404 plugin_register_read ("interface", traffic_read);
405 #endif
406 }