b2c8b0f27de37c36f1ae240e61278706db6e8e62
1 /**
2 * collectd - src/netlink.c
3 * Copyright (C) 2007-2010 Florian octo Forster
4 * Copyright (C) 2008-2012 Sebastian Harl
5 * Copyright (C) 2013 Andreas Henriksson
6 * Copyright (C) 2013 Marc Fournier
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; only version 2 of the License is applicable.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 *
21 * Authors:
22 * Florian octo Forster <octo at collectd.org>
23 * Sebastian Harl <sh at tokkee.org>
24 * Andreas Henriksson <andreas at fatal.se>
25 * Marc Fournier <marc.fournier at camptocamp.com>
26 **/
28 #include "collectd.h"
30 #include "plugin.h"
31 #include "common.h"
33 #include <asm/types.h>
35 #include <linux/netlink.h>
36 #include <linux/rtnetlink.h>
37 #if HAVE_LINUX_GEN_STATS_H
38 # include <linux/gen_stats.h>
39 #endif
40 #if HAVE_LINUX_PKT_SCHED_H
41 # include <linux/pkt_sched.h>
42 #endif
44 #include <libmnl/libmnl.h>
46 struct ir_link_stats_storage_s {
48 uint64_t rx_packets;
49 uint64_t tx_packets;
50 uint64_t rx_bytes;
51 uint64_t tx_bytes;
52 uint64_t rx_errors;
53 uint64_t tx_errors;
55 uint64_t rx_dropped;
56 uint64_t tx_dropped;
57 uint64_t multicast;
58 uint64_t collisions;
60 uint64_t rx_length_errors;
61 uint64_t rx_over_errors;
62 uint64_t rx_crc_errors;
63 uint64_t rx_frame_errors;
64 uint64_t rx_fifo_errors;
65 uint64_t rx_missed_errors;
67 uint64_t tx_aborted_errors;
68 uint64_t tx_carrier_errors;
69 uint64_t tx_fifo_errors;
70 uint64_t tx_heartbeat_errors;
71 uint64_t tx_window_errors;
72 };
74 union ir_link_stats_u {
75 struct rtnl_link_stats *stats32;
76 #ifdef HAVE_RTNL_LINK_STATS64
77 struct rtnl_link_stats64 *stats64;
78 #endif
79 };
81 typedef struct ir_ignorelist_s
82 {
83 char *device;
84 char *type;
85 char *inst;
86 struct ir_ignorelist_s *next;
87 } ir_ignorelist_t;
89 static int ir_ignorelist_invert = 1;
90 static ir_ignorelist_t *ir_ignorelist_head = NULL;
92 static struct mnl_socket *nl;
94 static char **iflist = NULL;
95 static size_t iflist_len = 0;
97 static const char *config_keys[] =
98 {
99 "Interface",
100 "VerboseInterface",
101 "QDisc",
102 "Class",
103 "Filter",
104 "IgnoreSelected"
105 };
106 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
108 static int add_ignorelist (const char *dev, const char *type,
109 const char *inst)
110 {
111 ir_ignorelist_t *entry;
113 entry = calloc (1, sizeof (*entry));
114 if (entry == NULL)
115 return (-1);
117 if (strcasecmp (dev, "All") != 0)
118 {
119 entry->device = strdup (dev);
120 if (entry->device == NULL)
121 {
122 sfree (entry);
123 return (-1);
124 }
125 }
127 entry->type = strdup (type);
128 if (entry->type == NULL)
129 {
130 sfree (entry->device);
131 sfree (entry);
132 return (-1);
133 }
135 if (inst != NULL)
136 {
137 entry->inst = strdup (inst);
138 if (entry->inst == NULL)
139 {
140 sfree (entry->type);
141 sfree (entry->device);
142 sfree (entry);
143 return (-1);
144 }
145 }
147 entry->next = ir_ignorelist_head;
148 ir_ignorelist_head = entry;
150 return (0);
151 } /* int add_ignorelist */
153 /*
154 * Checks wether a data set should be ignored. Returns `true' is the value
155 * should be ignored, `false' otherwise.
156 */
157 static int check_ignorelist (const char *dev,
158 const char *type, const char *type_instance)
159 {
160 ir_ignorelist_t *i;
162 assert ((dev != NULL) && (type != NULL));
164 if (ir_ignorelist_head == NULL)
165 return (ir_ignorelist_invert ? 0 : 1);
167 for (i = ir_ignorelist_head; i != NULL; i = i->next)
168 {
169 /* i->device == NULL => match all devices */
170 if ((i->device != NULL)
171 && (strcasecmp (i->device, dev) != 0))
172 continue;
174 if (strcasecmp (i->type, type) != 0)
175 continue;
177 if ((i->inst != NULL) && (type_instance != NULL)
178 && (strcasecmp (i->inst, type_instance) != 0))
179 continue;
181 DEBUG ("netlink plugin: check_ignorelist: "
182 "(dev = %s; type = %s; inst = %s) matched "
183 "(dev = %s; type = %s; inst = %s)",
184 dev, type,
185 type_instance == NULL ? "(nil)" : type_instance,
186 i->device == NULL ? "(nil)" : i->device,
187 i->type,
188 i->inst == NULL ? "(nil)" : i->inst);
190 return (ir_ignorelist_invert ? 0 : 1);
191 } /* for i */
193 return (ir_ignorelist_invert);
194 } /* int check_ignorelist */
196 static void submit_one (const char *dev, const char *type,
197 const char *type_instance, derive_t value)
198 {
199 value_t values[1];
200 value_list_t vl = VALUE_LIST_INIT;
202 values[0].derive = value;
204 vl.values = values;
205 vl.values_len = 1;
206 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
207 sstrncpy (vl.plugin, "netlink", sizeof (vl.plugin));
208 sstrncpy (vl.plugin_instance, dev, sizeof (vl.plugin_instance));
209 sstrncpy (vl.type, type, sizeof (vl.type));
211 if (type_instance != NULL)
212 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
214 plugin_dispatch_values (&vl);
215 } /* void submit_one */
217 static void submit_two (const char *dev, const char *type,
218 const char *type_instance,
219 derive_t rx, derive_t tx)
220 {
221 value_t values[2];
222 value_list_t vl = VALUE_LIST_INIT;
224 values[0].derive = rx;
225 values[1].derive = tx;
227 vl.values = values;
228 vl.values_len = 2;
229 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
230 sstrncpy (vl.plugin, "netlink", sizeof (vl.plugin));
231 sstrncpy (vl.plugin_instance, dev, sizeof (vl.plugin_instance));
232 sstrncpy (vl.type, type, sizeof (vl.type));
234 if (type_instance != NULL)
235 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
237 plugin_dispatch_values (&vl);
238 } /* void submit_two */
240 static int update_iflist (struct ifinfomsg *msg, const char *dev)
241 {
242 /* Update the `iflist'. It's used to know which interfaces exist and query
243 * them later for qdiscs and classes. */
244 if ((msg->ifi_index >= 0) && ((size_t) msg->ifi_index >= iflist_len))
245 {
246 char **temp;
248 temp = realloc (iflist, (msg->ifi_index + 1) * sizeof (char *));
249 if (temp == NULL)
250 {
251 ERROR ("netlink plugin: update_iflist: realloc failed.");
252 return (-1);
253 }
255 memset (temp + iflist_len, '\0',
256 (msg->ifi_index + 1 - iflist_len) * sizeof (char *));
257 iflist = temp;
258 iflist_len = msg->ifi_index + 1;
259 }
260 if ((iflist[msg->ifi_index] == NULL)
261 || (strcmp (iflist[msg->ifi_index], dev) != 0))
262 {
263 sfree (iflist[msg->ifi_index]);
264 iflist[msg->ifi_index] = strdup (dev);
265 }
267 return (0);
268 } /* int update_iflist */
270 static void check_ignorelist_and_submit (const char *dev,
271 struct ir_link_stats_storage_s *stats)
272 {
274 if (check_ignorelist (dev, "interface", NULL) == 0)
275 {
276 submit_two (dev, "if_octets", NULL, stats->rx_bytes, stats->tx_bytes);
277 submit_two (dev, "if_packets", NULL, stats->rx_packets, stats->tx_packets);
278 submit_two (dev, "if_errors", NULL, stats->rx_errors, stats->tx_errors);
279 }
280 else
281 {
282 DEBUG ("netlink plugin: Ignoring %s/interface.", dev);
283 }
285 if (check_ignorelist (dev, "if_detail", NULL) == 0)
286 {
287 submit_two (dev, "if_dropped", NULL, stats->rx_dropped, stats->tx_dropped);
288 submit_one (dev, "if_multicast", NULL, stats->multicast);
289 submit_one (dev, "if_collisions", NULL, stats->collisions);
291 submit_one (dev, "if_rx_errors", "length", stats->rx_length_errors);
292 submit_one (dev, "if_rx_errors", "over", stats->rx_over_errors);
293 submit_one (dev, "if_rx_errors", "crc", stats->rx_crc_errors);
294 submit_one (dev, "if_rx_errors", "frame", stats->rx_frame_errors);
295 submit_one (dev, "if_rx_errors", "fifo", stats->rx_fifo_errors);
296 submit_one (dev, "if_rx_errors", "missed", stats->rx_missed_errors);
298 submit_one (dev, "if_tx_errors", "aborted", stats->tx_aborted_errors);
299 submit_one (dev, "if_tx_errors", "carrier", stats->tx_carrier_errors);
300 submit_one (dev, "if_tx_errors", "fifo", stats->tx_fifo_errors);
301 submit_one (dev, "if_tx_errors", "heartbeat", stats->tx_heartbeat_errors);
302 submit_one (dev, "if_tx_errors", "window", stats->tx_window_errors);
303 }
304 else
305 {
306 DEBUG ("netlink plugin: Ignoring %s/if_detail.", dev);
307 }
309 } /* void check_ignorelist_and_submit */
311 #define COPY_RTNL_LINK_VALUE(dst_stats, src_stats, value_name) \
312 (dst_stats)->value_name = (src_stats)->value_name
314 #define COPY_RTNL_LINK_STATS(dst_stats, src_stats) \
315 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_packets); \
316 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, tx_packets); \
317 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_bytes); \
318 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, tx_bytes); \
319 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_errors); \
320 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, tx_errors); \
321 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_dropped); \
322 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, tx_dropped); \
323 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, multicast); \
324 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, collisions); \
325 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_length_errors); \
326 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_over_errors); \
327 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_crc_errors); \
328 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_frame_errors); \
329 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_fifo_errors); \
330 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, rx_missed_errors); \
331 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, tx_aborted_errors); \
332 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, tx_carrier_errors); \
333 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, tx_fifo_errors); \
334 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, tx_heartbeat_errors); \
335 COPY_RTNL_LINK_VALUE (dst_stats, src_stats, tx_window_errors)
337 #ifdef HAVE_RTNL_LINK_STATS64
338 static void check_ignorelist_and_submit64 (const char *dev,
339 struct rtnl_link_stats64 *stats)
340 {
341 struct ir_link_stats_storage_s s;
343 COPY_RTNL_LINK_STATS (&s, stats);
345 check_ignorelist_and_submit (dev, &s);
346 }
347 #endif
349 static void check_ignorelist_and_submit32 (const char *dev,
350 struct rtnl_link_stats *stats)
351 {
352 struct ir_link_stats_storage_s s;
354 COPY_RTNL_LINK_STATS(&s, stats);
356 check_ignorelist_and_submit (dev, &s);
357 }
359 static int link_filter_cb (const struct nlmsghdr *nlh,
360 void *args __attribute__((unused)))
361 {
362 struct ifinfomsg *ifm = mnl_nlmsg_get_payload (nlh);
363 struct nlattr *attr;
364 const char *dev = NULL;
365 union ir_link_stats_u stats;
367 if (nlh->nlmsg_type != RTM_NEWLINK)
368 {
369 ERROR ("netlink plugin: link_filter_cb: Don't know how to handle type %i.",
370 nlh->nlmsg_type);
371 return MNL_CB_ERROR;
372 }
374 /* Scan attribute list for device name. */
375 mnl_attr_for_each (attr, nlh, sizeof (*ifm))
376 {
377 if (mnl_attr_get_type (attr) != IFLA_IFNAME)
378 continue;
380 if (mnl_attr_validate (attr, MNL_TYPE_STRING) < 0)
381 {
382 ERROR ("netlink plugin: link_filter_cb: IFLA_IFNAME mnl_attr_validate failed.");
383 return MNL_CB_ERROR;
384 }
386 dev = mnl_attr_get_str (attr);
387 if (update_iflist (ifm, dev) < 0)
388 return MNL_CB_ERROR;
389 break;
390 }
392 if (dev == NULL)
393 {
394 ERROR ("netlink plugin: link_filter_cb: dev == NULL");
395 return MNL_CB_ERROR;
396 }
397 #ifdef HAVE_RTNL_LINK_STATS64
398 mnl_attr_for_each (attr, nlh, sizeof (*ifm))
399 {
400 if (mnl_attr_get_type (attr) != IFLA_STATS64)
401 continue;
403 if (mnl_attr_validate2 (attr, MNL_TYPE_UNSPEC, sizeof (*stats.stats64)) < 0)
404 {
405 ERROR ("netlink plugin: link_filter_cb: IFLA_STATS64 mnl_attr_validate2 failed.");
406 return MNL_CB_ERROR;
407 }
408 stats.stats64 = mnl_attr_get_payload (attr);
410 check_ignorelist_and_submit64 (dev, stats.stats64);
412 return MNL_CB_OK;
413 }
414 #endif
415 mnl_attr_for_each (attr, nlh, sizeof (*ifm))
416 {
417 if (mnl_attr_get_type (attr) != IFLA_STATS)
418 continue;
420 if (mnl_attr_validate2 (attr, MNL_TYPE_UNSPEC, sizeof (*stats.stats32)) < 0)
421 {
422 ERROR ("netlink plugin: link_filter_cb: IFLA_STATS mnl_attr_validate2 failed.");
423 return MNL_CB_ERROR;
424 }
425 stats.stats32 = mnl_attr_get_payload (attr);
427 check_ignorelist_and_submit32 (dev, stats.stats32);
429 return MNL_CB_OK;
430 }
432 DEBUG ("netlink plugin: link_filter: No statistics for interface %s.", dev);
433 return MNL_CB_OK;
435 } /* int link_filter_cb */
437 #if HAVE_TCA_STATS2
438 static int qos_attr_cb (const struct nlattr *attr, void *data)
439 {
440 struct gnet_stats_basic **bs = (struct gnet_stats_basic **)data;
442 /* skip unsupported attribute in user-space */
443 if (mnl_attr_type_valid (attr, TCA_STATS_MAX) < 0)
444 return MNL_CB_OK;
446 if (mnl_attr_get_type (attr) == TCA_STATS_BASIC)
447 {
448 if (mnl_attr_validate2 (attr, MNL_TYPE_UNSPEC, sizeof (**bs)) < 0)
449 {
450 ERROR ("netlink plugin: qos_attr_cb: TCA_STATS_BASIC mnl_attr_validate2 failed.");
451 return MNL_CB_ERROR;
452 }
453 *bs = mnl_attr_get_payload (attr);
454 return MNL_CB_STOP;
455 }
457 return MNL_CB_OK;
458 } /* qos_attr_cb */
459 #endif
461 static int qos_filter_cb (const struct nlmsghdr *nlh, void *args)
462 {
463 struct tcmsg *tm = mnl_nlmsg_get_payload (nlh);
464 struct nlattr *attr;
466 int wanted_ifindex = *((int *) args);
468 const char *dev;
469 const char *kind = NULL;
471 /* char *type_instance; */
472 const char *tc_type;
473 char tc_inst[DATA_MAX_NAME_LEN];
475 _Bool stats_submitted = 0;
477 if (nlh->nlmsg_type == RTM_NEWQDISC)
478 tc_type = "qdisc";
479 else if (nlh->nlmsg_type == RTM_NEWTCLASS)
480 tc_type = "class";
481 else if (nlh->nlmsg_type == RTM_NEWTFILTER)
482 tc_type = "filter";
483 else
484 {
485 ERROR ("netlink plugin: qos_filter_cb: Don't know how to handle type %i.",
486 nlh->nlmsg_type);
487 return MNL_CB_ERROR;
488 }
490 if (tm->tcm_ifindex != wanted_ifindex)
491 {
492 DEBUG ("netlink plugin: qos_filter_cb: Got %s for interface #%i, "
493 "but expected #%i.",
494 tc_type, tm->tcm_ifindex, wanted_ifindex);
495 return MNL_CB_OK;
496 }
498 if ((tm->tcm_ifindex >= 0)
499 && ((size_t) tm->tcm_ifindex >= iflist_len))
500 {
501 ERROR ("netlink plugin: qos_filter_cb: tm->tcm_ifindex = %i "
502 ">= iflist_len = %zu",
503 tm->tcm_ifindex, iflist_len);
504 return MNL_CB_ERROR;
505 }
507 dev = iflist[tm->tcm_ifindex];
508 if (dev == NULL)
509 {
510 ERROR ("netlink plugin: qos_filter_cb: iflist[%i] == NULL",
511 tm->tcm_ifindex);
512 return MNL_CB_ERROR;
513 }
515 mnl_attr_for_each (attr, nlh, sizeof (*tm))
516 {
517 if (mnl_attr_get_type (attr) != TCA_KIND)
518 continue;
520 if (mnl_attr_validate (attr, MNL_TYPE_STRING) < 0)
521 {
522 ERROR ("netlink plugin: qos_filter_cb: TCA_KIND mnl_attr_validate failed.");
523 return MNL_CB_ERROR;
524 }
526 kind = mnl_attr_get_str (attr);
527 break;
528 }
530 if (kind == NULL)
531 {
532 ERROR ("netlink plugin: qos_filter_cb: kind == NULL");
533 return (-1);
534 }
536 { /* The ID */
537 uint32_t numberic_id;
539 numberic_id = tm->tcm_handle;
540 if (strcmp (tc_type, "filter") == 0)
541 numberic_id = tm->tcm_parent;
543 ssnprintf (tc_inst, sizeof (tc_inst), "%s-%x:%x",
544 kind,
545 numberic_id >> 16,
546 numberic_id & 0x0000FFFF);
547 }
549 DEBUG ("netlink plugin: qos_filter_cb: got %s for %s (%i).",
550 tc_type, dev, tm->tcm_ifindex);
552 if (check_ignorelist (dev, tc_type, tc_inst))
553 return MNL_CB_OK;
555 #if HAVE_TCA_STATS2
556 mnl_attr_for_each (attr, nlh, sizeof (*tm))
557 {
558 struct gnet_stats_basic *bs = NULL;
560 if (mnl_attr_get_type (attr) != TCA_STATS2)
561 continue;
563 if (mnl_attr_validate (attr, MNL_TYPE_NESTED) < 0)
564 {
565 ERROR ("netlink plugin: qos_filter_cb: TCA_STATS2 mnl_attr_validate failed.");
566 return MNL_CB_ERROR;
567 }
569 mnl_attr_parse_nested (attr, qos_attr_cb, &bs);
571 if (bs != NULL)
572 {
573 char type_instance[DATA_MAX_NAME_LEN];
575 stats_submitted = 1;
577 ssnprintf (type_instance, sizeof (type_instance), "%s-%s",
578 tc_type, tc_inst);
580 submit_one (dev, "ipt_bytes", type_instance, bs->bytes);
581 submit_one (dev, "ipt_packets", type_instance, bs->packets);
582 }
584 break;
585 }
586 #endif /* TCA_STATS2 */
588 #if HAVE_TCA_STATS
589 mnl_attr_for_each (attr, nlh, sizeof (*tm))
590 {
591 struct tc_stats *ts = NULL;
593 if (mnl_attr_get_type (attr) != TCA_STATS)
594 continue;
596 if (mnl_attr_validate2 (attr, MNL_TYPE_UNSPEC, sizeof (*ts)) < 0)
597 {
598 ERROR ("netlink plugin: qos_filter_cb: TCA_STATS mnl_attr_validate2 failed.");
599 return MNL_CB_ERROR;
600 }
601 ts = mnl_attr_get_payload (attr);
603 if (!stats_submitted && ts != NULL)
604 {
605 char type_instance[DATA_MAX_NAME_LEN];
607 ssnprintf (type_instance, sizeof (type_instance), "%s-%s",
608 tc_type, tc_inst);
610 submit_one (dev, "ipt_bytes", type_instance, ts->bytes);
611 submit_one (dev, "ipt_packets", type_instance, ts->packets);
612 }
614 break;
615 }
617 #endif /* TCA_STATS */
619 #if !(HAVE_TCA_STATS && HAVE_TCA_STATS2)
620 DEBUG ("netlink plugin: qos_filter_cb: Have neither TCA_STATS2 nor "
621 "TCA_STATS.");
622 #endif
624 return MNL_CB_OK;
625 } /* int qos_filter_cb */
627 static int ir_config (const char *key, const char *value)
628 {
629 char *new_val;
630 char *fields[8];
631 int fields_num;
632 int status = 1;
634 new_val = strdup (value);
635 if (new_val == NULL)
636 return (-1);
638 fields_num = strsplit (new_val, fields, STATIC_ARRAY_SIZE (fields));
639 if ((fields_num < 1) || (fields_num > 8))
640 {
641 sfree (new_val);
642 return (-1);
643 }
645 if ((strcasecmp (key, "Interface") == 0)
646 || (strcasecmp (key, "VerboseInterface") == 0))
647 {
648 if (fields_num != 1)
649 {
650 ERROR ("netlink plugin: Invalid number of fields for option "
651 "`%s'. Got %i, expected 1.", key, fields_num);
652 status = -1;
653 }
654 else
655 {
656 add_ignorelist (fields[0], "interface", NULL);
657 if (strcasecmp (key, "VerboseInterface") == 0)
658 add_ignorelist (fields[0], "if_detail", NULL);
659 status = 0;
660 }
661 }
662 else if ((strcasecmp (key, "QDisc") == 0)
663 || (strcasecmp (key, "Class") == 0)
664 || (strcasecmp (key, "Filter") == 0))
665 {
666 if ((fields_num < 1) || (fields_num > 2))
667 {
668 ERROR ("netlink plugin: Invalid number of fields for option "
669 "`%s'. Got %i, expected 1 or 2.", key, fields_num);
670 return (-1);
671 }
672 else
673 {
674 add_ignorelist (fields[0], key,
675 (fields_num == 2) ? fields[1] : NULL);
676 status = 0;
677 }
678 }
679 else if (strcasecmp (key, "IgnoreSelected") == 0)
680 {
681 if (fields_num != 1)
682 {
683 ERROR ("netlink plugin: Invalid number of fields for option "
684 "`IgnoreSelected'. Got %i, expected 1.", fields_num);
685 status = -1;
686 }
687 else
688 {
689 if (IS_TRUE (fields[0]))
690 ir_ignorelist_invert = 0;
691 else
692 ir_ignorelist_invert = 1;
693 status = 0;
694 }
695 }
697 sfree (new_val);
699 return (status);
700 } /* int ir_config */
702 static int ir_init (void)
703 {
704 nl = mnl_socket_open (NETLINK_ROUTE);
705 if (nl == NULL)
706 {
707 ERROR ("netlink plugin: ir_init: mnl_socket_open failed.");
708 return (-1);
709 }
711 if (mnl_socket_bind (nl, 0, MNL_SOCKET_AUTOPID) < 0)
712 {
713 ERROR ("netlink plugin: ir_init: mnl_socket_bind failed.");
714 return (-1);
715 }
717 return (0);
718 } /* int ir_init */
720 static int ir_read (void)
721 {
722 char buf[MNL_SOCKET_BUFFER_SIZE];
723 struct nlmsghdr *nlh;
724 struct rtgenmsg *rt;
725 int ret;
726 unsigned int seq, portid;
728 size_t ifindex;
730 static const int type_id[] = { RTM_GETQDISC, RTM_GETTCLASS, RTM_GETTFILTER };
731 static const char *type_name[] = { "qdisc", "class", "filter" };
733 portid = mnl_socket_get_portid (nl);
735 nlh = mnl_nlmsg_put_header (buf);
736 nlh->nlmsg_type = RTM_GETLINK;
737 nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
738 nlh->nlmsg_seq = seq = time (NULL);
739 rt = mnl_nlmsg_put_extra_header (nlh, sizeof (*rt));
740 rt->rtgen_family = AF_PACKET;
742 if (mnl_socket_sendto (nl, nlh, nlh->nlmsg_len) < 0)
743 {
744 ERROR ("netlink plugin: ir_read: rtnl_wilddump_request failed.");
745 return (-1);
746 }
748 ret = mnl_socket_recvfrom (nl, buf, sizeof (buf));
749 while (ret > 0)
750 {
751 ret = mnl_cb_run (buf, ret, seq, portid, link_filter_cb, NULL);
752 if (ret <= MNL_CB_STOP)
753 break;
754 ret = mnl_socket_recvfrom (nl, buf, sizeof (buf));
755 }
756 if (ret < 0)
757 {
758 ERROR ("netlink plugin: ir_read: mnl_socket_recvfrom failed.");
759 return (-1);
760 }
762 /* `link_filter_cb' will update `iflist' which is used here to iterate
763 * over all interfaces. */
764 for (ifindex = 1; ifindex < iflist_len; ifindex++)
765 {
766 struct tcmsg *tm;
767 size_t type_index;
769 if (iflist[ifindex] == NULL)
770 continue;
772 for (type_index = 0; type_index < STATIC_ARRAY_SIZE (type_id); type_index++)
773 {
774 if (check_ignorelist (iflist[ifindex], type_name[type_index], NULL))
775 {
776 DEBUG ("netlink plugin: ir_read: check_ignorelist (%s, %s, (nil)) "
777 "== TRUE", iflist[ifindex], type_name[type_index]);
778 continue;
779 }
781 DEBUG ("netlink plugin: ir_read: querying %s from %s (%zu).",
782 type_name[type_index], iflist[ifindex], ifindex);
784 nlh = mnl_nlmsg_put_header (buf);
785 nlh->nlmsg_type = type_id[type_index];
786 nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
787 nlh->nlmsg_seq = seq = time (NULL);
788 tm = mnl_nlmsg_put_extra_header (nlh, sizeof (*tm));
789 tm->tcm_family = AF_PACKET;
790 tm->tcm_ifindex = ifindex;
792 if (mnl_socket_sendto (nl, nlh, nlh->nlmsg_len) < 0)
793 {
794 ERROR ("netlink plugin: ir_read: mnl_socket_sendto failed.");
795 continue;
796 }
798 ret = mnl_socket_recvfrom (nl, buf, sizeof (buf));
799 while (ret > 0)
800 {
801 ret = mnl_cb_run (buf, ret, seq, portid, qos_filter_cb, &ifindex);
802 if (ret <= MNL_CB_STOP)
803 break;
804 ret = mnl_socket_recvfrom (nl, buf, sizeof (buf));
805 }
806 if (ret < 0)
807 {
808 ERROR ("netlink plugin: ir_read:mnl_socket_recvfrom failed.");
809 continue;
810 }
812 } /* for (type_index) */
813 } /* for (if_index) */
815 return (0);
816 } /* int ir_read */
818 static int ir_shutdown (void)
819 {
820 if (nl)
821 {
822 mnl_socket_close (nl);
823 nl = NULL;
824 }
826 return (0);
827 } /* int ir_shutdown */
829 void module_register (void)
830 {
831 plugin_register_config ("netlink", ir_config, config_keys, config_keys_num);
832 plugin_register_init ("netlink", ir_init);
833 plugin_register_read ("netlink", ir_read);
834 plugin_register_shutdown ("netlink", ir_shutdown);
835 } /* void module_register */
837 /*
838 * vim: set shiftwidth=2 softtabstop=2 tabstop=8 :
839 */