1 /*
2 * collectd - src/ovs_stats.c
3 *
4 * Copyright(c) 2016 Intel Corporation. All rights reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of
8 * this software and associated documentation files (the "Software"), to deal in
9 * the Software without restriction, including without limitation the rights to
10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
11 * of the Software, and to permit persons to whom the Software is furnished to
12 * do
13 * so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all
17 * copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 * SOFTWARE.
26 *
27 * Authors:
28 * Taras Chornyi <tarasx.chornyi@intel.com>
29 */
31 #include "common.h"
33 #include "utils_ovs.h" /* OvS helpers */
35 /* Plugin name */
36 static const char plugin_name[] = "ovs_stats";
38 typedef enum iface_counter {
39 not_supported = -1,
40 collisions,
41 rx_bytes,
42 rx_crc_err,
43 rx_dropped,
44 rx_errors,
45 rx_frame_err,
46 rx_over_err,
47 rx_packets,
48 tx_bytes,
49 tx_dropped,
50 tx_errors,
51 tx_packets,
52 rx_1_to_64_packets,
53 rx_65_to_127_packets,
54 rx_128_to_255_packets,
55 rx_256_to_511_packets,
56 rx_512_to_1023_packets,
57 rx_1024_to_1522_packets,
58 rx_1523_to_max_packets,
59 tx_1_to_64_packets,
60 tx_65_to_127_packets,
61 tx_128_to_255_packets,
62 tx_256_to_511_packets,
63 tx_512_to_1023_packets,
64 tx_1024_to_1522_packets,
65 tx_1523_to_max_packets,
66 tx_multicast_packets,
67 rx_broadcast_packets,
68 tx_broadcast_packets,
69 rx_undersized_errors,
70 rx_oversize_errors,
71 rx_fragmented_errors,
72 rx_jabber_errors,
73 __iface_counter_max
74 } iface_counter;
76 #define IFACE_COUNTER_MAX (__iface_counter_max - 1)
77 #define IFACE_COUNTER_COUNT (__iface_counter_max)
78 #define PORT_NAME_SIZE_MAX 255
79 #define UUID_SIZE 64
81 typedef struct port_s {
82 char name[PORT_NAME_SIZE_MAX]; /* Port name */
83 char port_uuid[UUID_SIZE]; /* Port table _uuid */
84 char iface_uuid[UUID_SIZE]; /* Interface table uuid */
85 char ex_iface_id[UUID_SIZE]; /* External iface id */
86 char ex_vm_id[UUID_SIZE]; /* External vm id */
87 int64_t stats[IFACE_COUNTER_COUNT]; /* Port statistics */
88 struct bridge_list_s *br; /* Pointer to bridge */
89 struct port_s *next; /* Next port */
90 } port_list_t;
92 typedef struct bridge_list_s {
93 char *name; /* Bridge name */
94 struct bridge_list_s *next; /* Next bridge*/
95 } bridge_list_t;
97 static const char *const iface_counter_table[IFACE_COUNTER_COUNT] = {
98 [collisions] = "collisions",
99 [rx_bytes] = "rx_bytes",
100 [rx_crc_err] = "rx_crc_err",
101 [rx_dropped] = "rx_dropped",
102 [rx_errors] = "rx_errors",
103 [rx_frame_err] = "rx_frame_err",
104 [rx_over_err] = "rx_over_err",
105 [rx_packets] = "rx_packets",
106 [tx_bytes] = "tx_bytes",
107 [tx_dropped] = "tx_dropped",
108 [tx_errors] = "tx_errors",
109 [tx_packets] = "tx_packets",
110 [rx_1_to_64_packets] = "rx_1_to_64_packets",
111 [rx_65_to_127_packets] = "rx_65_to_127_packets",
112 [rx_128_to_255_packets] = "rx_128_to_255_packets",
113 [rx_256_to_511_packets] = "rx_256_to_511_packets",
114 [rx_512_to_1023_packets] = "rx_512_to_1023_packets",
115 [rx_1024_to_1522_packets] = "rx_1024_to_1518_packets",
116 [rx_1523_to_max_packets] = "rx_1523_to_max_packets",
117 [tx_1_to_64_packets] = "tx_1_to_64_packets",
118 [tx_65_to_127_packets] = "tx_65_to_127_packets",
119 [tx_128_to_255_packets] = "tx_128_to_255_packets",
120 [tx_256_to_511_packets] = "tx_256_to_511_packets",
121 [tx_512_to_1023_packets] = "tx_512_to_1023_packets",
122 [tx_1024_to_1522_packets] = "tx_1024_to_1518_packets",
123 [tx_1523_to_max_packets] = "tx_1523_to_max_packets",
124 [tx_multicast_packets] = "tx_multicast_packets",
125 [rx_broadcast_packets] = "rx_broadcast_packets",
126 [tx_broadcast_packets] = "tx_broadcast_packets",
127 [rx_undersized_errors] = "rx_undersized_errors",
128 [rx_oversize_errors] = "rx_oversize_errors",
129 [rx_fragmented_errors] = "rx_fragmented_errors",
130 [rx_jabber_errors] = "rx_jabber_errors",
131 };
133 /* Entry into the list of network bridges */
134 static bridge_list_t *g_bridge_list_head;
136 /* Entry into the list of monitored network bridges */
137 static bridge_list_t *g_monitored_bridge_list_head;
139 /* entry into the list of network bridges */
140 static port_list_t *g_port_list_head;
142 /* lock for statistics cache */
143 static pthread_mutex_t g_stats_lock;
145 /* OvS DB socket */
146 static ovs_db_t *g_ovs_db;
148 /* OVS stats configuration data */
149 struct ovs_stats_config_s {
150 char ovs_db_node[OVS_DB_ADDR_NODE_SIZE]; /* OVS DB node */
151 char ovs_db_serv[OVS_DB_ADDR_SERVICE_SIZE]; /* OVS DB service */
152 char ovs_db_unix[OVS_DB_ADDR_UNIX_SIZE]; /* OVS DB unix socket path */
153 };
154 typedef struct ovs_stats_config_s ovs_stats_config_t;
156 static ovs_stats_config_t ovs_stats_cfg = {
157 .ovs_db_node = "localhost", /* use default OVS DB node */
158 .ovs_db_serv = "6640", /* use default OVS DB service */
159 };
161 static iface_counter ovs_stats_counter_name_to_type(const char *counter) {
162 iface_counter index = not_supported;
164 if (counter == NULL)
165 return not_supported;
167 for (int i = 0; i < IFACE_COUNTER_COUNT; i++) {
168 if (strncmp(iface_counter_table[i], counter,
169 strlen(iface_counter_table[i])) == 0) {
170 index = i;
171 break;
172 }
173 }
174 return index;
175 }
177 static void ovs_stats_submit_one(const char *dev, const char *type,
178 const char *type_instance, derive_t value,
179 meta_data_t *meta) {
180 /* if counter is less than 0 - skip it*/
181 if (value < 0)
182 return;
183 value_list_t vl = VALUE_LIST_INIT;
185 vl.values = &(value_t){.derive = value};
186 vl.values_len = 1;
187 vl.meta = meta;
189 sstrncpy(vl.plugin, plugin_name, sizeof(vl.plugin));
190 sstrncpy(vl.plugin_instance, dev, sizeof(vl.plugin_instance));
191 sstrncpy(vl.type, type, sizeof(vl.type));
193 if (type_instance != NULL)
194 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
196 plugin_dispatch_values(&vl);
197 }
199 static void ovs_stats_submit_two(const char *dev, const char *type,
200 const char *type_instance, derive_t rx,
201 derive_t tx, meta_data_t *meta) {
202 /* if counter is less than 0 - skip it*/
203 if (rx < 0 || tx < 0)
204 return;
205 value_list_t vl = VALUE_LIST_INIT;
206 value_t values[] = {{.derive = rx}, {.derive = tx}};
208 vl.values = values;
209 vl.values_len = STATIC_ARRAY_SIZE(values);
210 vl.meta = meta;
212 sstrncpy(vl.plugin, plugin_name, sizeof(vl.plugin));
213 sstrncpy(vl.plugin_instance, dev, sizeof(vl.plugin_instance));
214 sstrncpy(vl.type, type, sizeof(vl.type));
216 if (type_instance != NULL)
217 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
219 plugin_dispatch_values(&vl);
220 }
222 static port_list_t *ovs_stats_get_port(const char *uuid) {
223 if (uuid == NULL)
224 return NULL;
226 for (port_list_t *port = g_port_list_head; port != NULL; port = port->next) {
227 if (strncmp(port->port_uuid, uuid, strlen(port->port_uuid)) == 0)
228 return port;
229 }
230 return NULL;
231 }
233 static port_list_t *ovs_stats_get_port_by_name(const char *name) {
234 if (name == NULL)
235 return NULL;
237 for (port_list_t *port = g_port_list_head; port != NULL; port = port->next)
238 if ((strncmp(port->name, name, strlen(port->name)) == 0) &&
239 strlen(name) == strlen(port->name))
240 return port;
241 return NULL;
242 }
244 /* Create or get port by port uuid */
245 static port_list_t *ovs_stats_new_port(bridge_list_t *bridge,
246 const char *uuid) {
247 port_list_t *port = ovs_stats_get_port(uuid);
249 if (port == NULL) {
250 port = (port_list_t *)calloc(1, sizeof(port_list_t));
251 if (!port) {
252 ERROR("%s: Error allocating port", plugin_name);
253 return NULL;
254 }
255 memset(port->stats, -1, sizeof(int64_t[IFACE_COUNTER_COUNT]));
256 sstrncpy(port->port_uuid, uuid, sizeof(port->port_uuid));
257 pthread_mutex_lock(&g_stats_lock);
258 port->next = g_port_list_head;
259 g_port_list_head = port;
260 pthread_mutex_unlock(&g_stats_lock);
261 }
262 if (bridge != NULL) {
263 pthread_mutex_lock(&g_stats_lock);
264 port->br = bridge;
265 pthread_mutex_unlock(&g_stats_lock);
266 }
267 return port;
268 }
270 /* Get bridge by name*/
271 static bridge_list_t *ovs_stats_get_bridge(bridge_list_t *head,
272 const char *name) {
273 if (name == NULL)
274 return NULL;
276 for (bridge_list_t *bridge = head; bridge != NULL; bridge = bridge->next) {
277 if ((strncmp(bridge->name, name, strlen(bridge->name)) == 0) &&
278 strlen(name) == strlen(bridge->name))
279 return bridge;
280 }
281 return NULL;
282 }
284 /* Delete bridge */
285 static int ovs_stats_del_bridge(yajl_val bridge) {
286 const char *old[] = {"old", NULL};
287 const char *name[] = {"name", NULL};
289 yajl_val row;
291 if (bridge && YAJL_IS_OBJECT(bridge)) {
292 row = yajl_tree_get(bridge, old, yajl_t_object);
293 if (row && YAJL_IS_OBJECT(row)) {
294 yajl_val br_name = yajl_tree_get(row, name, yajl_t_string);
295 if (br_name && YAJL_IS_STRING(br_name)) {
296 bridge_list_t *prev_br = g_bridge_list_head;
297 for (bridge_list_t *br = g_bridge_list_head; br != NULL;
298 prev_br = br, br = br->next) {
299 if ((strncmp(br->name, br_name->u.string, strlen(br->name)) == 0) &&
300 strlen(br->name) == strlen(br_name->u.string)) {
301 if (br == g_bridge_list_head)
302 g_bridge_list_head = br->next;
303 else
304 prev_br->next = br->next;
305 sfree(br->name);
306 sfree(br);
307 break;
308 }
309 }
310 }
311 }
312 } else
313 WARNING("%s: Incorrect data for deleting bridge", plugin_name);
314 return 0;
315 }
317 /* Update Bridge. Create bridge ports*/
318 static int ovs_stats_update_bridge(yajl_val bridge) {
319 const char *new[] = {"new", NULL};
320 const char *name[] = {"name", NULL};
321 const char *ports[] = {"ports", NULL};
322 bridge_list_t *br = NULL;
324 if (bridge && YAJL_IS_OBJECT(bridge)) {
325 yajl_val row = yajl_tree_get(bridge, new, yajl_t_object);
326 if (row && YAJL_IS_OBJECT(row)) {
327 yajl_val br_name = yajl_tree_get(row, name, yajl_t_string);
328 yajl_val br_ports = yajl_tree_get(row, ports, yajl_t_array);
329 if (br_name && YAJL_IS_STRING(br_name)) {
330 br = ovs_stats_get_bridge(g_bridge_list_head, YAJL_GET_STRING(br_name));
331 pthread_mutex_lock(&g_stats_lock);
332 if (br == NULL) {
333 br = (bridge_list_t *)calloc(1, sizeof(bridge_list_t));
334 if (!br) {
335 ERROR("%s: Error allocating memory for bridge", plugin_name);
336 return -1;
337 }
338 char *tmp = YAJL_GET_STRING(br_name);
340 if (tmp != NULL)
341 br->name = strdup(tmp);
342 if (br->name == NULL) {
343 sfree(br);
344 pthread_mutex_unlock(&g_stats_lock);
345 return -1;
346 }
347 br->next = g_bridge_list_head;
348 g_bridge_list_head = br;
349 }
350 pthread_mutex_unlock(&g_stats_lock);
351 }
352 if (br_ports && YAJL_IS_ARRAY(br_ports)) {
353 char *tmp = YAJL_GET_STRING(br_ports->u.array.values[0]);
354 if (tmp != NULL && strcmp("set", tmp) == 0) {
355 yajl_val *array = YAJL_GET_ARRAY(br_ports)->values;
356 size_t array_len = YAJL_GET_ARRAY(br_ports)->len;
357 if (array != NULL && array_len > 0 && YAJL_IS_ARRAY(array[1])) {
358 yajl_val *ports_arr = YAJL_GET_ARRAY(array[1])->values;
359 size_t ports_num = YAJL_GET_ARRAY(array[1])->len;
360 for (size_t i = 0; i < ports_num && ports_arr != NULL; i++)
361 ovs_stats_new_port(
362 br, YAJL_GET_STRING(ports_arr[i]->u.array.values[1]));
363 }
364 } else
365 ovs_stats_new_port(br, YAJL_GET_STRING(br_ports->u.array.values[1]));
366 }
367 }
368 } else {
369 ERROR("Incorrect JSON Bridge data");
370 return -1;
371 }
372 return 0;
373 }
375 /* Handle JSON with Bridge Table change event */
376 static void ovs_stats_bridge_table_change_cb(yajl_val jupdates) {
377 /* Bridge Table update example JSON data
378 {
379 "Bridge": {
380 "bb1f8965-5775-46d9-b820-236ca8edbedc": {
381 "new": {
382 "name": "br0",
383 "ports": [
384 "set",
385 [
386 [
387 "uuid",
388 "117f1a07-7ef0-458a-865c-ec7fbb85bc01"
389 ],
390 [
391 "uuid",
392 "12fd8bdc-e950-4281-aaa9-46e185658f79"
393 ]
394 ]
395 ]
396 }
397 }
398 }
399 }
400 */
401 const char *path[] = {"Bridge", NULL};
403 yajl_val bridges = yajl_tree_get(jupdates, path, yajl_t_object);
405 if (bridges && YAJL_IS_OBJECT(bridges)) {
406 for (size_t i = 0; i < YAJL_GET_OBJECT(bridges)->len; i++) {
407 yajl_val bridge = YAJL_GET_OBJECT(bridges)->values[i];
408 ovs_stats_update_bridge(bridge);
409 }
410 }
411 }
413 /* Handle Bridge Table delete event */
414 static void ovs_stats_bridge_table_delete_cb(yajl_val jupdates) {
415 const char *path[] = {"Bridge", NULL};
416 yajl_val bridges = yajl_tree_get(jupdates, path, yajl_t_object);
417 yajl_val bridge;
418 if (bridges && YAJL_IS_OBJECT(bridges)) {
419 pthread_mutex_lock(&g_stats_lock);
420 for (size_t i = 0; i < YAJL_GET_OBJECT(bridges)->len; i++) {
421 bridge = YAJL_GET_OBJECT(bridges)->values[i];
422 ovs_stats_del_bridge(bridge);
423 }
424 pthread_mutex_unlock(&g_stats_lock);
425 }
426 return;
427 }
429 /* Handle JSON with Bridge table initial values */
430 static void ovs_stats_bridge_table_result_cb(yajl_val jresult,
431 yajl_val jerror) {
432 if (YAJL_IS_NULL(jerror))
433 ovs_stats_bridge_table_change_cb(jresult);
434 else
435 ERROR("%s: Error received from OvSDB. Table: Bridge", plugin_name);
436 return;
437 }
439 /* Update port name */
440 static int ovs_stats_update_port(const char *uuid, yajl_val port) {
441 const char *new[] = {"new", NULL};
442 const char *name[] = {"name", NULL};
443 yajl_val row;
444 port_list_t *portentry = NULL;
445 if (port && YAJL_IS_OBJECT(port)) {
446 row = yajl_tree_get(port, new, yajl_t_object);
447 if (row && YAJL_IS_OBJECT(row)) {
448 yajl_val port_name = yajl_tree_get(row, name, yajl_t_string);
449 if (port_name && YAJL_IS_STRING(port_name)) {
450 portentry = ovs_stats_get_port(uuid);
451 if (portentry == NULL)
452 portentry = ovs_stats_new_port(NULL, uuid);
453 if (portentry) {
454 pthread_mutex_lock(&g_stats_lock);
455 sstrncpy(portentry->name, YAJL_GET_STRING(port_name),
456 sizeof(portentry->name));
457 pthread_mutex_unlock(&g_stats_lock);
458 }
459 }
460 }
461 } else {
462 ERROR("Incorrect JSON Port data");
463 return -1;
464 }
465 return 0;
466 }
468 /* Delete port from global port list */
469 static int ovs_stats_del_port(const char *uuid) {
470 port_list_t *prev_port = g_port_list_head;
471 for (port_list_t *port = g_port_list_head; port != NULL;
472 prev_port = port, port = port->next) {
473 if (strncmp(port->port_uuid, uuid, strlen(port->port_uuid)) == 0) {
474 if (port == g_port_list_head)
475 g_port_list_head = port->next;
476 else
477 prev_port->next = port->next;
478 sfree(port);
479 break;
480 }
481 }
482 return 0;
483 }
485 /* Handle JSON with Port Table change event */
486 static void ovs_stats_port_table_change_cb(yajl_val jupdates) {
487 /* Port Table update example JSON data
488 {
489 "Port": {
490 "ab107d6f-28a1-4257-b1cc-5b742821db8a": {
491 "new": {
492 "name": "br1",
493 "interfaces": [
494 "uuid",
495 "33a289a0-1d34-4e46-a3c2-3e4066fbecc6"
496 ]
497 }
498 }
499 }
500 }
501 */
502 const char *path[] = {"Port", NULL};
503 yajl_val ports = yajl_tree_get(jupdates, path, yajl_t_object);
504 yajl_val port;
505 if (ports && YAJL_IS_OBJECT(ports)) {
506 for (size_t i = 0; i < YAJL_GET_OBJECT(ports)->len; i++) {
507 port = YAJL_GET_OBJECT(ports)->values[i];
508 ovs_stats_update_port(YAJL_GET_OBJECT(ports)->keys[i], port);
509 }
510 }
511 return;
512 }
514 /* Handle JSON with Port table initial values */
515 static void ovs_stats_port_table_result_cb(yajl_val jresult, yajl_val jerror) {
516 if (YAJL_IS_NULL(jerror))
517 ovs_stats_port_table_change_cb(jresult);
518 else
519 ERROR("%s: Error received from OvSDB. Table: Port", plugin_name);
520 return;
521 }
523 /* Handle Port Table delete event */
524 static void ovs_stats_port_table_delete_cb(yajl_val jupdates) {
525 const char *path[] = {"Port", NULL};
526 yajl_val ports = yajl_tree_get(jupdates, path, yajl_t_object);
527 pthread_mutex_lock(&g_stats_lock);
528 if (ports && YAJL_IS_OBJECT(ports))
529 for (size_t i = 0; i < YAJL_GET_OBJECT(ports)->len; i++) {
530 ovs_stats_del_port(YAJL_GET_OBJECT(ports)->keys[i]);
531 }
532 pthread_mutex_unlock(&g_stats_lock);
533 return;
534 }
536 /* Update interface statistics */
537 static int ovs_stats_update_iface_stats(port_list_t *port, yajl_val stats) {
538 yajl_val stat;
539 iface_counter counter_index = 0;
540 char *counter_name = NULL;
541 int64_t counter_value = 0;
542 if (stats && YAJL_IS_ARRAY(stats))
543 for (size_t i = 0; i < YAJL_GET_ARRAY(stats)->len; i++) {
544 stat = YAJL_GET_ARRAY(stats)->values[i];
545 if (!YAJL_IS_ARRAY(stat))
546 return -1;
547 counter_name = YAJL_GET_STRING(YAJL_GET_ARRAY(stat)->values[0]);
548 counter_index = ovs_stats_counter_name_to_type(counter_name);
549 counter_value = YAJL_GET_INTEGER(YAJL_GET_ARRAY(stat)->values[1]);
550 if (counter_index == not_supported)
551 continue;
552 port->stats[counter_index] = counter_value;
553 }
555 return 0;
556 }
558 /* Update interface external_ids */
559 static int ovs_stats_update_iface_ext_ids(port_list_t *port, yajl_val ext_ids) {
560 yajl_val ext_id;
561 char *key;
562 char *value;
564 if (ext_ids && YAJL_IS_ARRAY(ext_ids))
565 for (size_t i = 0; i < YAJL_GET_ARRAY(ext_ids)->len; i++) {
566 ext_id = YAJL_GET_ARRAY(ext_ids)->values[i];
567 if (!YAJL_IS_ARRAY(ext_id))
568 return -1;
569 key = YAJL_GET_STRING(YAJL_GET_ARRAY(ext_id)->values[0]);
570 value = YAJL_GET_STRING(YAJL_GET_ARRAY(ext_id)->values[1]);
571 if (key && value) {
572 if (strncmp(key, "iface-id", strlen(key)) == 0)
573 sstrncpy(port->ex_iface_id, value, sizeof(port->ex_iface_id));
574 else if (strncmp(key, "vm-uuid", strlen(key)) == 0)
575 sstrncpy(port->ex_vm_id, value, sizeof(port->ex_vm_id));
576 }
577 }
579 return 0;
580 }
582 /* Get interface statistic and external_ids */
583 static int ovs_stats_update_iface(yajl_val iface) {
584 yajl_val row;
585 port_list_t *port = NULL;
586 if (iface && YAJL_IS_OBJECT(iface)) {
587 row = ovs_utils_get_value_by_key(iface, "new");
588 if (row && YAJL_IS_OBJECT(row)) {
589 yajl_val iface_name = ovs_utils_get_value_by_key(row, "name");
590 yajl_val iface_stats = ovs_utils_get_value_by_key(row, "statistics");
591 yajl_val iface_ext_ids = ovs_utils_get_value_by_key(row, "external_ids");
592 yajl_val iface_uuid = ovs_utils_get_value_by_key(row, "_uuid");
593 if (iface_name && YAJL_IS_STRING(iface_name)) {
594 port = ovs_stats_get_port_by_name(YAJL_GET_STRING(iface_name));
595 if (port == NULL)
596 return 0;
597 }
598 /*
599 * {
600 "statistics": [
601 "map",
602 [
603 [
604 "collisions",
605 0
606 ],
607 . . .
608 [
609 "tx_packets",
610 0
611 ]
612 ]
613 ]
614 }
615 Check that statistics is an array with 2 elements
616 */
617 if (iface_stats && YAJL_IS_ARRAY(iface_stats) &&
618 YAJL_GET_ARRAY(iface_stats)->len == 2)
619 ovs_stats_update_iface_stats(port,
620 YAJL_GET_ARRAY(iface_stats)->values[1]);
621 if (iface_ext_ids && YAJL_IS_ARRAY(iface_ext_ids))
622 ovs_stats_update_iface_ext_ids(
623 port, YAJL_GET_ARRAY(iface_ext_ids)->values[1]);
624 if (iface_uuid && YAJL_IS_ARRAY(iface_uuid) &&
625 YAJL_GET_ARRAY(iface_uuid)->len == 2)
626 sstrncpy(port->iface_uuid,
627 YAJL_GET_STRING(YAJL_GET_ARRAY(iface_uuid)->values[1]),
628 sizeof(port->iface_uuid));
629 }
630 } else {
631 ERROR("Incorrect JSON Port data");
632 return -1;
633 }
634 return 0;
635 }
637 /* Handle JSON with Interface Table change event */
638 static void ovs_stats_interface_table_change_cb(yajl_val jupdates) {
639 /* Interface Table update example JSON data
640 {
641 "Interface": {
642 "33a289a0-1d34-4e46-a3c2-3e4066fbecc6": {
643 "new": {
644 "name": "br1",
645 "statistics": [
646 "map",
647 [
648 [
649 "collisions",
650 0
651 ],
652 [
653 "rx_bytes",
654 0
655 ],
656 . . .
657 [
658 "tx_packets",
659 12617
660 ]
661 ]
662 ],
663 "_uuid": [
664 "uuid",
665 "33a289a0-1d34-4e46-a3c2-3e4066fbecc6"
666 ]
667 "external_ids": [
668 "map",
669 [
670 [
671 "attached-mac",
672 "fa:16:3e:7c:1c:4b"
673 ],
674 [
675 "iface-id",
676 "a61b7e2b-6951-488a-b4c6-6e91343960b2"
677 ],
678 [
679 "iface-status",
680 "active"
681 ]
682 ]
683 ]
684 }
685 }
686 }
687 }
688 */
689 const char *path[] = {"Interface", NULL};
690 yajl_val ports = yajl_tree_get(jupdates, path, yajl_t_object);
691 pthread_mutex_lock(&g_stats_lock);
692 if (ports && YAJL_IS_OBJECT(ports))
693 for (size_t i = 0; i < YAJL_GET_OBJECT(ports)->len; i++)
694 ovs_stats_update_iface(YAJL_GET_OBJECT(ports)->values[i]);
695 pthread_mutex_unlock(&g_stats_lock);
696 return;
697 }
699 /* Handle JSON with Interface table initial values */
700 static void ovs_stats_interface_table_result_cb(yajl_val jresult,
701 yajl_val jerror) {
702 if (YAJL_IS_NULL(jerror))
703 ovs_stats_interface_table_change_cb(jresult);
704 else
705 ERROR("%s: Error received from OvSDB. Table: Interface", plugin_name);
706 return;
707 }
709 /* Setup OVS DB table callbacks */
710 static void ovs_stats_initialize(ovs_db_t *pdb) {
711 const char *bridge_columns[] = {"name", "ports", NULL};
712 const char *port_columns[] = {"name", "interfaces", NULL};
713 const char *interface_columns[] = {"name", "statistics", "_uuid",
714 "external_ids", NULL};
716 /* subscribe to a tables */
717 ovs_db_table_cb_register(
718 pdb, "Bridge", bridge_columns, ovs_stats_bridge_table_change_cb,
719 ovs_stats_bridge_table_result_cb,
720 OVS_DB_TABLE_CB_FLAG_INITIAL | OVS_DB_TABLE_CB_FLAG_INSERT |
721 OVS_DB_TABLE_CB_FLAG_MODIFY);
723 ovs_db_table_cb_register(pdb, "Bridge", bridge_columns,
724 ovs_stats_bridge_table_delete_cb, NULL,
725 OVS_DB_TABLE_CB_FLAG_DELETE);
727 ovs_db_table_cb_register(
728 pdb, "Port", port_columns, ovs_stats_port_table_change_cb,
729 ovs_stats_port_table_result_cb,
730 OVS_DB_TABLE_CB_FLAG_INITIAL | OVS_DB_TABLE_CB_FLAG_INSERT |
731 OVS_DB_TABLE_CB_FLAG_MODIFY);
733 ovs_db_table_cb_register(pdb, "Port", port_columns,
734 ovs_stats_port_table_delete_cb, NULL,
735 OVS_DB_TABLE_CB_FLAG_DELETE);
737 ovs_db_table_cb_register(
738 pdb, "Interface", interface_columns, ovs_stats_interface_table_change_cb,
739 ovs_stats_interface_table_result_cb,
740 OVS_DB_TABLE_CB_FLAG_INITIAL | OVS_DB_TABLE_CB_FLAG_INSERT |
741 OVS_DB_TABLE_CB_FLAG_MODIFY);
742 }
744 /* Check if bridge is configured to be monitored in config file */
745 static int ovs_stats_is_monitored_bridge(const char *br_name) {
746 /* if no bridges are configured, return true */
747 if (g_monitored_bridge_list_head == NULL)
748 return 1;
750 /* check if given bridge exists */
751 if (ovs_stats_get_bridge(g_monitored_bridge_list_head, br_name) != NULL)
752 return 1;
754 return 0;
755 }
757 /* Delete all ports from port list */
758 static void ovs_stats_free_port_list(port_list_t *head) {
759 for (port_list_t *i = head; i != NULL;) {
760 port_list_t *del = i;
761 i = i->next;
762 sfree(del);
763 }
764 }
766 /* Delete all bridges from bridge list */
767 static void ovs_stats_free_bridge_list(bridge_list_t *head) {
768 for (bridge_list_t *i = head; i != NULL;) {
769 bridge_list_t *del = i;
770 i = i->next;
771 sfree(del->name);
772 sfree(del);
773 }
774 }
776 /* Handle OVSDB lost connection callback */
777 static void ovs_stats_conn_terminate() {
778 WARNING("Lost connection to OVSDB server");
779 pthread_mutex_lock(&g_stats_lock);
780 ovs_stats_free_bridge_list(g_bridge_list_head);
781 g_bridge_list_head = NULL;
782 ovs_stats_free_port_list(g_port_list_head);
783 g_port_list_head = NULL;
784 pthread_mutex_unlock(&g_stats_lock);
785 }
787 /* Parse plugin configuration file and store the config
788 * in allocated memory. Returns negative value in case of error.
789 */
790 static int ovs_stats_plugin_config(oconfig_item_t *ci) {
791 bridge_list_t *bridge;
792 char *br_name;
794 for (int i = 0; i < ci->children_num; i++) {
795 oconfig_item_t *child = ci->children + i;
796 if (strcasecmp("Address", child->key) == 0) {
797 if (cf_util_get_string_buffer(child, ovs_stats_cfg.ovs_db_node,
798 OVS_DB_ADDR_NODE_SIZE) != 0) {
799 ERROR("%s: parse '%s' option failed", plugin_name, child->key);
800 return -1;
801 }
802 } else if (strcasecmp("Port", child->key) == 0) {
803 if (cf_util_get_string_buffer(child, ovs_stats_cfg.ovs_db_serv,
804 OVS_DB_ADDR_SERVICE_SIZE) != 0) {
805 ERROR("%s: parse '%s' option failed", plugin_name, child->key);
806 return -1;
807 }
808 } else if (strcasecmp("Socket", child->key) == 0) {
809 if (cf_util_get_string_buffer(child, ovs_stats_cfg.ovs_db_unix,
810 OVS_DB_ADDR_UNIX_SIZE) != 0) {
811 ERROR("%s: parse '%s' option failed", plugin_name, child->key);
812 return -1;
813 }
814 } else if (strcasecmp("Bridges", child->key) == 0) {
815 for (int j = 0; j < child->values_num; j++) {
816 /* check value type */
817 if (child->values[j].type != OCONFIG_TYPE_STRING) {
818 ERROR("%s: Wrong bridge name [idx=%d]. "
819 "Bridge name should be string",
820 plugin_name, j);
821 goto cleanup_fail;
822 }
823 /* get value */
824 if ((br_name = strdup(child->values[j].value.string)) == NULL) {
825 ERROR("%s: strdup() copy bridge name fail", plugin_name);
826 goto cleanup_fail;
827 }
828 if ((bridge = ovs_stats_get_bridge(g_monitored_bridge_list_head,
829 br_name)) == NULL) {
830 if ((bridge = calloc(1, sizeof(bridge_list_t))) == NULL) {
831 ERROR("%s: Error allocating memory for bridge", plugin_name);
832 goto cleanup_fail;
833 } else {
834 pthread_mutex_lock(&g_stats_lock);
835 /* store bridge name */
836 bridge->name = br_name;
837 bridge->next = g_monitored_bridge_list_head;
838 g_monitored_bridge_list_head = bridge;
839 pthread_mutex_unlock(&g_stats_lock);
840 DEBUG("%s: found monitored interface \"%s\"", plugin_name, br_name);
841 }
842 }
843 }
844 } else {
845 WARNING("%s: option '%s' not allowed here", plugin_name, child->key);
846 goto cleanup_fail;
847 }
848 }
849 return 0;
851 cleanup_fail:
852 ovs_stats_free_bridge_list(g_monitored_bridge_list_head);
853 return -1;
854 }
856 /* Initialize OvS Stats plugin*/
857 static int ovs_stats_plugin_init(void) {
858 ovs_db_callback_t cb = {.post_conn_init = ovs_stats_initialize,
859 .post_conn_terminate = ovs_stats_conn_terminate};
861 INFO("%s: Connecting to OVS DB using address=%s, service=%s, unix=%s",
862 plugin_name, ovs_stats_cfg.ovs_db_node, ovs_stats_cfg.ovs_db_serv,
863 ovs_stats_cfg.ovs_db_unix);
864 /* connect to OvS DB */
865 if ((g_ovs_db =
866 ovs_db_init(ovs_stats_cfg.ovs_db_node, ovs_stats_cfg.ovs_db_serv,
867 ovs_stats_cfg.ovs_db_unix, &cb)) == NULL) {
868 ERROR("%s: plugin: failed to connect to OvS DB server", plugin_name);
869 return -1;
870 }
871 int err = pthread_mutex_init(&g_stats_lock, NULL);
872 if (err < 0) {
873 ERROR("%s: plugin: failed to initialize cache lock", plugin_name);
874 ovs_db_destroy(g_ovs_db);
875 return -1;
876 }
877 return 0;
878 }
880 /* OvS stats read callback. Read bridge/port information and submit it*/
881 static int ovs_stats_plugin_read(__attribute__((unused)) user_data_t *ud) {
882 bridge_list_t *bridge;
883 port_list_t *port;
884 char devname[PORT_NAME_SIZE_MAX * 2];
886 pthread_mutex_lock(&g_stats_lock);
887 for (bridge = g_bridge_list_head; bridge != NULL; bridge = bridge->next) {
888 if (ovs_stats_is_monitored_bridge(bridge->name)) {
889 for (port = g_port_list_head; port != NULL; port = port->next)
890 if (port->br == bridge) {
891 if (strlen(port->name) == 0)
892 /* Skip port w/o name. This is possible when read callback
893 * is called after Interface Table update callback but before
894 * Port table Update callback. Will add this port on next read */
895 continue;
896 meta_data_t *meta = meta_data_create();
897 if (meta != NULL) {
898 meta_data_add_string(meta, "uuid", port->iface_uuid);
899 if (strlen(port->ex_vm_id))
900 meta_data_add_string(meta, "vm-uuid", port->ex_vm_id);
901 if (strlen(port->ex_iface_id))
902 meta_data_add_string(meta, "iface-id", port->ex_iface_id);
903 }
904 snprintf(devname, sizeof(devname), "%s.%s", bridge->name, port->name);
905 ovs_stats_submit_one(devname, "if_collisions", NULL,
906 port->stats[collisions], meta);
907 ovs_stats_submit_two(devname, "if_dropped", NULL,
908 port->stats[rx_dropped], port->stats[tx_dropped],
909 meta);
910 ovs_stats_submit_two(devname, "if_errors", NULL,
911 port->stats[rx_errors], port->stats[tx_errors],
912 meta);
913 ovs_stats_submit_two(devname, "if_packets", NULL,
914 port->stats[rx_packets], port->stats[tx_packets],
915 meta);
916 ovs_stats_submit_one(devname, "if_rx_errors", "crc",
917 port->stats[rx_crc_err], meta);
918 ovs_stats_submit_one(devname, "if_rx_errors", "frame",
919 port->stats[rx_frame_err], meta);
920 ovs_stats_submit_one(devname, "if_rx_errors", "over",
921 port->stats[rx_over_err], meta);
922 ovs_stats_submit_one(devname, "if_rx_octets", NULL,
923 port->stats[rx_bytes], meta);
924 ovs_stats_submit_one(devname, "if_tx_octets", NULL,
925 port->stats[tx_bytes], meta);
926 ovs_stats_submit_two(devname, "if_packets", "1_to_64_packets",
927 port->stats[rx_1_to_64_packets],
928 port->stats[tx_1_to_64_packets], meta);
929 ovs_stats_submit_two(devname, "if_packets", "65_to_127_packets",
930 port->stats[rx_65_to_127_packets],
931 port->stats[tx_65_to_127_packets], meta);
932 ovs_stats_submit_two(devname, "if_packets", "128_to_255_packets",
933 port->stats[rx_128_to_255_packets],
934 port->stats[tx_128_to_255_packets], meta);
935 ovs_stats_submit_two(devname, "if_packets", "256_to_511_packets",
936 port->stats[rx_256_to_511_packets],
937 port->stats[tx_256_to_511_packets], meta);
938 ovs_stats_submit_two(devname, "if_packets", "512_to_1023_packets",
939 port->stats[rx_512_to_1023_packets],
940 port->stats[tx_512_to_1023_packets], meta);
941 ovs_stats_submit_two(devname, "if_packets", "1024_to_1518_packets",
942 port->stats[rx_1024_to_1522_packets],
943 port->stats[tx_1024_to_1522_packets], meta);
944 ovs_stats_submit_two(devname, "if_packets", "1523_to_max_packets",
945 port->stats[rx_1523_to_max_packets],
946 port->stats[tx_1523_to_max_packets], meta);
947 ovs_stats_submit_two(devname, "if_packets", "broadcast_packets",
948 port->stats[rx_broadcast_packets],
949 port->stats[tx_broadcast_packets], meta);
950 ovs_stats_submit_one(devname, "if_multicast", "tx_multicast_packets",
951 port->stats[tx_multicast_packets], meta);
952 ovs_stats_submit_one(devname, "if_rx_errors", "rx_undersized_errors",
953 port->stats[rx_undersized_errors], meta);
954 ovs_stats_submit_one(devname, "if_rx_errors", "rx_oversize_errors",
955 port->stats[rx_oversize_errors], meta);
956 ovs_stats_submit_one(devname, "if_rx_errors", "rx_fragmented_errors",
957 port->stats[rx_fragmented_errors], meta);
958 ovs_stats_submit_one(devname, "if_rx_errors", "rx_jabber_errors",
959 port->stats[rx_jabber_errors], meta);
961 meta_data_destroy(meta);
962 }
963 } else
964 continue;
965 }
966 pthread_mutex_unlock(&g_stats_lock);
967 return 0;
968 }
970 /* Shutdown OvS Stats plugin */
971 static int ovs_stats_plugin_shutdown(void) {
972 pthread_mutex_lock(&g_stats_lock);
973 DEBUG("OvS Statistics plugin shutting down");
974 ovs_db_destroy(g_ovs_db);
975 ovs_stats_free_bridge_list(g_bridge_list_head);
976 ovs_stats_free_bridge_list(g_monitored_bridge_list_head);
977 ovs_stats_free_port_list(g_port_list_head);
978 pthread_mutex_unlock(&g_stats_lock);
979 pthread_mutex_destroy(&g_stats_lock);
980 return 0;
981 }
983 /* Register OvS Stats plugin callbacks */
984 void module_register(void) {
985 plugin_register_complex_config(plugin_name, ovs_stats_plugin_config);
986 plugin_register_init(plugin_name, ovs_stats_plugin_init);
987 plugin_register_complex_read(NULL, plugin_name, ovs_stats_plugin_read, 0,
988 NULL);
989 plugin_register_shutdown(plugin_name, ovs_stats_plugin_shutdown);
990 }