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 of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 * Authors:
25 * Taras Chornyi <tarasx.chornyi@intel.com>
26 */
28 #include "common.h"
30 #include "utils_ovs.h" /* OvS helpers */
32 /* Plugin name */
33 static const char plugin_name[] = "ovs_stats";
35 typedef enum iface_counter {
36 not_supported = -1,
37 collisions,
38 rx_bytes,
39 rx_crc_err,
40 rx_dropped,
41 rx_errors,
42 rx_frame_err,
43 rx_over_err,
44 rx_packets,
45 tx_bytes,
46 tx_dropped,
47 tx_errors,
48 tx_packets,
49 rx_1_to_64_packets,
50 rx_65_to_127_packets,
51 rx_128_to_255_packets,
52 rx_256_to_511_packets,
53 rx_512_to_1023_packets,
54 rx_1024_to_1522_packets,
55 rx_1523_to_max_packets,
56 tx_1_to_64_packets,
57 tx_65_to_127_packets,
58 tx_128_to_255_packets,
59 tx_256_to_511_packets,
60 tx_512_to_1023_packets,
61 tx_1024_to_1522_packets,
62 tx_1523_to_max_packets,
63 tx_multicast_packets,
64 rx_broadcast_packets,
65 tx_broadcast_packets,
66 rx_undersized_errors,
67 rx_oversize_errors,
68 rx_fragmented_errors,
69 rx_jabber_errors,
70 __iface_counter_max
71 } iface_counter;
73 #define IFACE_COUNTER_MAX (__iface_counter_max - 1)
74 #define IFACE_COUNTER_COUNT (__iface_counter_max)
75 #define PORT_NAME_SIZE_MAX 255
76 #define UUID_SIZE 64
78 typedef struct port_s {
79 char name[PORT_NAME_SIZE_MAX]; /* Port name */
80 char port_uuid[UUID_SIZE]; /* Port table _uuid */
81 char iface_uuid[UUID_SIZE]; /* Interface table uuid */
82 char ex_iface_id[UUID_SIZE]; /* External iface id */
83 char ex_vm_id[UUID_SIZE]; /* External vm id */
84 int64_t stats[IFACE_COUNTER_COUNT]; /* Port statistics */
85 struct bridge_list_s *br; /* Pointer to bridge */
86 struct port_s *next; /* Next port */
87 } port_list_t;
89 typedef struct bridge_list_s {
90 char *name; /* Bridge name */
91 struct bridge_list_s *next; /* Next bridge*/
92 } bridge_list_t;
94 static const char *const iface_counter_table[IFACE_COUNTER_COUNT] = {
95 [collisions] = "collisions",
96 [rx_bytes] = "rx_bytes",
97 [rx_crc_err] = "rx_crc_err",
98 [rx_dropped] = "rx_dropped",
99 [rx_errors] = "rx_errors",
100 [rx_frame_err] = "rx_frame_err",
101 [rx_over_err] = "rx_over_err",
102 [rx_packets] = "rx_packets",
103 [tx_bytes] = "tx_bytes",
104 [tx_dropped] = "tx_dropped",
105 [tx_errors] = "tx_errors",
106 [tx_packets] = "tx_packets",
107 [rx_1_to_64_packets] = "rx_1_to_64_packets",
108 [rx_65_to_127_packets] = "rx_65_to_127_packets",
109 [rx_128_to_255_packets] = "rx_128_to_255_packets",
110 [rx_256_to_511_packets] = "rx_256_to_511_packets",
111 [rx_512_to_1023_packets] = "rx_512_to_1023_packets",
112 [rx_1024_to_1522_packets] = "rx_1024_to_1518_packets",
113 [rx_1523_to_max_packets] = "rx_1523_to_max_packets",
114 [tx_1_to_64_packets] = "tx_1_to_64_packets",
115 [tx_65_to_127_packets] = "tx_65_to_127_packets",
116 [tx_128_to_255_packets] = "tx_128_to_255_packets",
117 [tx_256_to_511_packets] = "tx_256_to_511_packets",
118 [tx_512_to_1023_packets] = "tx_512_to_1023_packets",
119 [tx_1024_to_1522_packets] = "tx_1024_to_1518_packets",
120 [tx_1523_to_max_packets] = "tx_1523_to_max_packets",
121 [tx_multicast_packets] = "tx_multicast_packets",
122 [rx_broadcast_packets] = "rx_broadcast_packets",
123 [tx_broadcast_packets] = "tx_broadcast_packets",
124 [rx_undersized_errors] = "rx_undersized_errors",
125 [rx_oversize_errors] = "rx_oversize_errors",
126 [rx_fragmented_errors] = "rx_fragmented_errors",
127 [rx_jabber_errors] = "rx_jabber_errors",
128 };
130 /* Entry into the list of network bridges */
131 static bridge_list_t *g_bridge_list_head;
133 /* Entry into the list of monitored network bridges */
134 static bridge_list_t *g_monitored_bridge_list_head;
136 /* entry into the list of network bridges */
137 static port_list_t *g_port_list_head;
139 /* lock for statistics cache */
140 static pthread_mutex_t g_stats_lock;
142 /* OvS DB socket */
143 static ovs_db_t *g_ovs_db;
145 /* OVS stats configuration data */
146 struct ovs_stats_config_s {
147 char ovs_db_node[OVS_DB_ADDR_NODE_SIZE]; /* OVS DB node */
148 char ovs_db_serv[OVS_DB_ADDR_SERVICE_SIZE]; /* OVS DB service */
149 char ovs_db_unix[OVS_DB_ADDR_UNIX_SIZE]; /* OVS DB unix socket path */
150 };
151 typedef struct ovs_stats_config_s ovs_stats_config_t;
153 static ovs_stats_config_t ovs_stats_cfg = {
154 .ovs_db_node = "localhost", /* use default OVS DB node */
155 .ovs_db_serv = "6640", /* use default OVS DB service */
156 };
158 static iface_counter ovs_stats_counter_name_to_type(const char *counter) {
159 iface_counter index = not_supported;
161 if (counter == NULL)
162 return not_supported;
164 for (int i = 0; i < IFACE_COUNTER_COUNT; i++) {
165 if (strncmp(iface_counter_table[i], counter,
166 strlen(iface_counter_table[i])) == 0) {
167 index = i;
168 break;
169 }
170 }
171 return index;
172 }
174 static void ovs_stats_submit_one(const char *dev, const char *type,
175 const char *type_instance, derive_t value,
176 meta_data_t *meta) {
177 /* if counter is less than 0 - skip it*/
178 if (value < 0)
179 return;
180 value_list_t vl = VALUE_LIST_INIT;
182 vl.values = &(value_t){.derive = value};
183 vl.values_len = 1;
184 vl.meta = meta;
186 sstrncpy(vl.plugin, plugin_name, sizeof(vl.plugin));
187 sstrncpy(vl.plugin_instance, dev, sizeof(vl.plugin_instance));
188 sstrncpy(vl.type, type, sizeof(vl.type));
190 if (type_instance != NULL)
191 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
193 plugin_dispatch_values(&vl);
194 }
196 static void ovs_stats_submit_two(const char *dev, const char *type,
197 const char *type_instance, derive_t rx,
198 derive_t tx, meta_data_t *meta) {
199 /* if counter is less than 0 - skip it*/
200 if (rx < 0 || tx < 0)
201 return;
202 value_list_t vl = VALUE_LIST_INIT;
203 value_t values[] = {{.derive = rx}, {.derive = tx}};
205 vl.values = values;
206 vl.values_len = STATIC_ARRAY_SIZE(values);
207 vl.meta = meta;
209 sstrncpy(vl.plugin, plugin_name, sizeof(vl.plugin));
210 sstrncpy(vl.plugin_instance, dev, sizeof(vl.plugin_instance));
211 sstrncpy(vl.type, type, sizeof(vl.type));
213 if (type_instance != NULL)
214 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
216 plugin_dispatch_values(&vl);
217 }
219 static port_list_t *ovs_stats_get_port(const char *uuid) {
220 if (uuid == NULL)
221 return NULL;
223 for (port_list_t *port = g_port_list_head; port != NULL; port = port->next) {
224 if (strncmp(port->port_uuid, uuid, strlen(port->port_uuid)) == 0)
225 return port;
226 }
227 return NULL;
228 }
230 static port_list_t *ovs_stats_get_port_by_name(const char *name) {
231 if (name == NULL)
232 return NULL;
234 for (port_list_t *port = g_port_list_head; port != NULL; port = port->next)
235 if ((strncmp(port->name, name, strlen(port->name)) == 0) &&
236 strlen(name) == strlen(port->name))
237 return port;
238 return NULL;
239 }
241 /* Create or get port by port uuid */
242 static port_list_t *ovs_stats_new_port(bridge_list_t *bridge,
243 const char *uuid) {
244 port_list_t *port = ovs_stats_get_port(uuid);
246 if (port == NULL) {
247 port = (port_list_t *)calloc(1, sizeof(port_list_t));
248 if (!port) {
249 ERROR("%s: Error allocating port", plugin_name);
250 return NULL;
251 }
252 memset(port->stats, -1, sizeof(int64_t[IFACE_COUNTER_COUNT]));
253 sstrncpy(port->port_uuid, uuid, sizeof(port->port_uuid));
254 pthread_mutex_lock(&g_stats_lock);
255 port->next = g_port_list_head;
256 g_port_list_head = port;
257 pthread_mutex_unlock(&g_stats_lock);
258 }
259 if (bridge != NULL) {
260 pthread_mutex_lock(&g_stats_lock);
261 port->br = bridge;
262 pthread_mutex_unlock(&g_stats_lock);
263 }
264 return port;
265 }
267 /* Get bridge by name*/
268 static bridge_list_t *ovs_stats_get_bridge(bridge_list_t *head,
269 const char *name) {
270 if (name == NULL)
271 return NULL;
273 for (bridge_list_t *bridge = head; bridge != NULL; bridge = bridge->next) {
274 if ((strncmp(bridge->name, name, strlen(bridge->name)) == 0) &&
275 strlen(name) == strlen(bridge->name))
276 return bridge;
277 }
278 return NULL;
279 }
281 /* Delete bridge */
282 static int ovs_stats_del_bridge(yajl_val bridge) {
283 const char *old[] = {"old", NULL};
284 const char *name[] = {"name", NULL};
286 yajl_val row;
288 if (bridge && YAJL_IS_OBJECT(bridge)) {
289 row = yajl_tree_get(bridge, old, yajl_t_object);
290 if (row && YAJL_IS_OBJECT(row)) {
291 yajl_val br_name = yajl_tree_get(row, name, yajl_t_string);
292 if (br_name && YAJL_IS_STRING(br_name)) {
293 bridge_list_t *prev_br = g_bridge_list_head;
294 for (bridge_list_t *br = g_bridge_list_head; br != NULL;
295 prev_br = br, br = br->next) {
296 if ((strncmp(br->name, br_name->u.string, strlen(br->name)) == 0) &&
297 strlen(br->name) == strlen(br_name->u.string)) {
298 if (br == g_bridge_list_head)
299 g_bridge_list_head = br->next;
300 else
301 prev_br->next = br->next;
302 sfree(br->name);
303 sfree(br);
304 break;
305 }
306 }
307 }
308 }
309 } else
310 WARNING("%s: Incorrect data for deleting bridge", plugin_name);
311 return 0;
312 }
314 /* Update Bridge. Create bridge ports*/
315 static int ovs_stats_update_bridge(yajl_val bridge) {
316 const char *new[] = {"new", NULL};
317 const char *name[] = {"name", NULL};
318 const char *ports[] = {"ports", NULL};
319 bridge_list_t *br = NULL;
321 if (bridge && YAJL_IS_OBJECT(bridge)) {
322 yajl_val row = yajl_tree_get(bridge, new, yajl_t_object);
323 if (row && YAJL_IS_OBJECT(row)) {
324 yajl_val br_name = yajl_tree_get(row, name, yajl_t_string);
325 yajl_val br_ports = yajl_tree_get(row, ports, yajl_t_array);
326 if (br_name && YAJL_IS_STRING(br_name)) {
327 br = ovs_stats_get_bridge(g_bridge_list_head, YAJL_GET_STRING(br_name));
328 pthread_mutex_lock(&g_stats_lock);
329 if (br == NULL) {
330 br = (bridge_list_t *)calloc(1, sizeof(bridge_list_t));
331 if (!br) {
332 ERROR("%s: Error allocating memory for bridge", plugin_name);
333 return -1;
334 }
335 char *tmp = YAJL_GET_STRING(br_name);
337 if (tmp != NULL)
338 br->name = strdup(tmp);
339 if (br->name == NULL) {
340 sfree(br);
341 pthread_mutex_unlock(&g_stats_lock);
342 return -1;
343 }
344 br->next = g_bridge_list_head;
345 g_bridge_list_head = br;
346 }
347 pthread_mutex_unlock(&g_stats_lock);
348 }
349 if (br_ports && YAJL_IS_ARRAY(br_ports)) {
350 char *tmp = YAJL_GET_STRING(br_ports->u.array.values[0]);
351 if (tmp != NULL && strcmp("set", tmp) == 0) {
352 yajl_val *array = YAJL_GET_ARRAY(br_ports)->values;
353 size_t array_len = YAJL_GET_ARRAY(br_ports)->len;
354 if (array != NULL && array_len > 0 && YAJL_IS_ARRAY(array[1])) {
355 yajl_val *ports_arr = YAJL_GET_ARRAY(array[1])->values;
356 size_t ports_num = YAJL_GET_ARRAY(array[1])->len;
357 for (size_t i = 0; i < ports_num && ports_arr != NULL; i++)
358 ovs_stats_new_port(
359 br, YAJL_GET_STRING(ports_arr[i]->u.array.values[1]));
360 }
361 } else
362 ovs_stats_new_port(br, YAJL_GET_STRING(br_ports->u.array.values[1]));
363 }
364 }
365 } else {
366 ERROR("Incorrect JSON Bridge data");
367 return -1;
368 }
369 return 0;
370 }
372 /* Handle JSON with Bridge Table change event */
373 static void ovs_stats_bridge_table_change_cb(yajl_val jupdates) {
374 /* Bridge Table update example JSON data
375 {
376 "Bridge": {
377 "bb1f8965-5775-46d9-b820-236ca8edbedc": {
378 "new": {
379 "name": "br0",
380 "ports": [
381 "set",
382 [
383 [
384 "uuid",
385 "117f1a07-7ef0-458a-865c-ec7fbb85bc01"
386 ],
387 [
388 "uuid",
389 "12fd8bdc-e950-4281-aaa9-46e185658f79"
390 ]
391 ]
392 ]
393 }
394 }
395 }
396 }
397 */
398 const char *path[] = {"Bridge", NULL};
400 yajl_val bridges = yajl_tree_get(jupdates, path, yajl_t_object);
402 if (bridges && YAJL_IS_OBJECT(bridges)) {
403 for (size_t i = 0; i < YAJL_GET_OBJECT(bridges)->len; i++) {
404 yajl_val bridge = YAJL_GET_OBJECT(bridges)->values[i];
405 ovs_stats_update_bridge(bridge);
406 }
407 }
408 }
410 /* Handle Bridge Table delete event */
411 static void ovs_stats_bridge_table_delete_cb(yajl_val jupdates) {
412 const char *path[] = {"Bridge", NULL};
413 yajl_val bridges = yajl_tree_get(jupdates, path, yajl_t_object);
414 yajl_val bridge;
415 if (bridges && YAJL_IS_OBJECT(bridges)) {
416 pthread_mutex_lock(&g_stats_lock);
417 for (size_t i = 0; i < YAJL_GET_OBJECT(bridges)->len; i++) {
418 bridge = YAJL_GET_OBJECT(bridges)->values[i];
419 ovs_stats_del_bridge(bridge);
420 }
421 pthread_mutex_unlock(&g_stats_lock);
422 }
423 return;
424 }
426 /* Handle JSON with Bridge table initial values */
427 static void ovs_stats_bridge_table_result_cb(yajl_val jresult,
428 yajl_val jerror) {
429 if (YAJL_IS_NULL(jerror))
430 ovs_stats_bridge_table_change_cb(jresult);
431 else
432 ERROR("%s: Error received from OvSDB. Table: Bridge", plugin_name);
433 return;
434 }
436 /* Update port name */
437 static int ovs_stats_update_port(const char *uuid, yajl_val port) {
438 const char *new[] = {"new", NULL};
439 const char *name[] = {"name", NULL};
440 yajl_val row;
441 port_list_t *portentry = NULL;
442 if (port && YAJL_IS_OBJECT(port)) {
443 row = yajl_tree_get(port, new, yajl_t_object);
444 if (row && YAJL_IS_OBJECT(row)) {
445 yajl_val port_name = yajl_tree_get(row, name, yajl_t_string);
446 if (port_name && YAJL_IS_STRING(port_name)) {
447 portentry = ovs_stats_get_port(uuid);
448 if (portentry == NULL)
449 portentry = ovs_stats_new_port(NULL, uuid);
450 if (portentry) {
451 pthread_mutex_lock(&g_stats_lock);
452 sstrncpy(portentry->name, YAJL_GET_STRING(port_name),
453 sizeof(portentry->name));
454 pthread_mutex_unlock(&g_stats_lock);
455 }
456 }
457 }
458 } else {
459 ERROR("Incorrect JSON Port data");
460 return -1;
461 }
462 return 0;
463 }
465 /* Delete port from global port list */
466 static int ovs_stats_del_port(const char *uuid) {
467 port_list_t *prev_port = g_port_list_head;
468 for (port_list_t *port = g_port_list_head; port != NULL;
469 prev_port = port, port = port->next) {
470 if (strncmp(port->port_uuid, uuid, strlen(port->port_uuid)) == 0) {
471 if (port == g_port_list_head)
472 g_port_list_head = port->next;
473 else
474 prev_port->next = port->next;
475 sfree(port);
476 break;
477 }
478 }
479 return 0;
480 }
482 /* Handle JSON with Port Table change event */
483 static void ovs_stats_port_table_change_cb(yajl_val jupdates) {
484 /* Port Table update example JSON data
485 {
486 "Port": {
487 "ab107d6f-28a1-4257-b1cc-5b742821db8a": {
488 "new": {
489 "name": "br1",
490 "interfaces": [
491 "uuid",
492 "33a289a0-1d34-4e46-a3c2-3e4066fbecc6"
493 ]
494 }
495 }
496 }
497 }
498 */
499 const char *path[] = {"Port", NULL};
500 yajl_val ports = yajl_tree_get(jupdates, path, yajl_t_object);
501 yajl_val port;
502 if (ports && YAJL_IS_OBJECT(ports)) {
503 for (size_t i = 0; i < YAJL_GET_OBJECT(ports)->len; i++) {
504 port = YAJL_GET_OBJECT(ports)->values[i];
505 ovs_stats_update_port(YAJL_GET_OBJECT(ports)->keys[i], port);
506 }
507 }
508 return;
509 }
511 /* Handle JSON with Port table initial values */
512 static void ovs_stats_port_table_result_cb(yajl_val jresult, yajl_val jerror) {
513 if (YAJL_IS_NULL(jerror))
514 ovs_stats_port_table_change_cb(jresult);
515 else
516 ERROR("%s: Error received from OvSDB. Table: Port", plugin_name);
517 return;
518 }
520 /* Handle Port Table delete event */
521 static void ovs_stats_port_table_delete_cb(yajl_val jupdates) {
522 const char *path[] = {"Port", NULL};
523 yajl_val ports = yajl_tree_get(jupdates, path, yajl_t_object);
524 pthread_mutex_lock(&g_stats_lock);
525 if (ports && YAJL_IS_OBJECT(ports))
526 for (size_t i = 0; i < YAJL_GET_OBJECT(ports)->len; i++) {
527 ovs_stats_del_port(YAJL_GET_OBJECT(ports)->keys[i]);
528 }
529 pthread_mutex_unlock(&g_stats_lock);
530 return;
531 }
533 /* Update interface statistics */
534 static int ovs_stats_update_iface_stats(port_list_t *port, yajl_val stats) {
535 yajl_val stat;
536 iface_counter counter_index = 0;
537 char *counter_name = NULL;
538 int64_t counter_value = 0;
539 if (stats && YAJL_IS_ARRAY(stats))
540 for (size_t i = 0; i < YAJL_GET_ARRAY(stats)->len; i++) {
541 stat = YAJL_GET_ARRAY(stats)->values[i];
542 if (!YAJL_IS_ARRAY(stat))
543 return -1;
544 counter_name = YAJL_GET_STRING(YAJL_GET_ARRAY(stat)->values[0]);
545 counter_index = ovs_stats_counter_name_to_type(counter_name);
546 counter_value = YAJL_GET_INTEGER(YAJL_GET_ARRAY(stat)->values[1]);
547 if (counter_index == not_supported)
548 continue;
549 port->stats[counter_index] = counter_value;
550 }
552 return 0;
553 }
555 /* Update interface external_ids */
556 static int ovs_stats_update_iface_ext_ids(port_list_t *port, yajl_val ext_ids) {
557 yajl_val ext_id;
558 char *key;
559 char *value;
561 if (ext_ids && YAJL_IS_ARRAY(ext_ids))
562 for (size_t i = 0; i < YAJL_GET_ARRAY(ext_ids)->len; i++) {
563 ext_id = YAJL_GET_ARRAY(ext_ids)->values[i];
564 if (!YAJL_IS_ARRAY(ext_id))
565 return -1;
566 key = YAJL_GET_STRING(YAJL_GET_ARRAY(ext_id)->values[0]);
567 value = YAJL_GET_STRING(YAJL_GET_ARRAY(ext_id)->values[1]);
568 if (key && value) {
569 if (strncmp(key, "iface-id", strlen(key)) == 0)
570 sstrncpy(port->ex_iface_id, value, sizeof(port->ex_iface_id));
571 else if (strncmp(key, "vm-uuid", strlen(key)) == 0)
572 sstrncpy(port->ex_vm_id, value, sizeof(port->ex_vm_id));
573 }
574 }
576 return 0;
577 }
579 /* Get interface statistic and external_ids */
580 static int ovs_stats_update_iface(yajl_val iface) {
581 yajl_val row;
582 port_list_t *port = NULL;
583 if (iface && YAJL_IS_OBJECT(iface)) {
584 row = ovs_utils_get_value_by_key(iface, "new");
585 if (row && YAJL_IS_OBJECT(row)) {
586 yajl_val iface_name = ovs_utils_get_value_by_key(row, "name");
587 yajl_val iface_stats = ovs_utils_get_value_by_key(row, "statistics");
588 yajl_val iface_ext_ids = ovs_utils_get_value_by_key(row, "external_ids");
589 yajl_val iface_uuid = ovs_utils_get_value_by_key(row, "_uuid");
590 if (iface_name && YAJL_IS_STRING(iface_name)) {
591 port = ovs_stats_get_port_by_name(YAJL_GET_STRING(iface_name));
592 if (port == NULL)
593 return 0;
594 }
595 /*
596 * {
597 "statistics": [
598 "map",
599 [
600 [
601 "collisions",
602 0
603 ],
604 . . .
605 [
606 "tx_packets",
607 0
608 ]
609 ]
610 ]
611 }
612 Check that statistics is an array with 2 elements
613 */
614 if (iface_stats && YAJL_IS_ARRAY(iface_stats) &&
615 YAJL_GET_ARRAY(iface_stats)->len == 2)
616 ovs_stats_update_iface_stats(port,
617 YAJL_GET_ARRAY(iface_stats)->values[1]);
618 if (iface_ext_ids && YAJL_IS_ARRAY(iface_ext_ids))
619 ovs_stats_update_iface_ext_ids(
620 port, YAJL_GET_ARRAY(iface_ext_ids)->values[1]);
621 if (iface_uuid && YAJL_IS_ARRAY(iface_uuid) &&
622 YAJL_GET_ARRAY(iface_uuid)->len == 2)
623 sstrncpy(port->iface_uuid,
624 YAJL_GET_STRING(YAJL_GET_ARRAY(iface_uuid)->values[1]),
625 sizeof(port->iface_uuid));
626 }
627 } else {
628 ERROR("Incorrect JSON Port data");
629 return -1;
630 }
631 return 0;
632 }
634 /* Handle JSON with Interface Table change event */
635 static void ovs_stats_interface_table_change_cb(yajl_val jupdates) {
636 /* Interface Table update example JSON data
637 {
638 "Interface": {
639 "33a289a0-1d34-4e46-a3c2-3e4066fbecc6": {
640 "new": {
641 "name": "br1",
642 "statistics": [
643 "map",
644 [
645 [
646 "collisions",
647 0
648 ],
649 [
650 "rx_bytes",
651 0
652 ],
653 . . .
654 [
655 "tx_packets",
656 12617
657 ]
658 ]
659 ],
660 "_uuid": [
661 "uuid",
662 "33a289a0-1d34-4e46-a3c2-3e4066fbecc6"
663 ]
664 "external_ids": [
665 "map",
666 [
667 [
668 "attached-mac",
669 "fa:16:3e:7c:1c:4b"
670 ],
671 [
672 "iface-id",
673 "a61b7e2b-6951-488a-b4c6-6e91343960b2"
674 ],
675 [
676 "iface-status",
677 "active"
678 ]
679 ]
680 ]
681 }
682 }
683 }
684 }
685 */
686 const char *path[] = {"Interface", NULL};
687 yajl_val ports = yajl_tree_get(jupdates, path, yajl_t_object);
688 pthread_mutex_lock(&g_stats_lock);
689 if (ports && YAJL_IS_OBJECT(ports))
690 for (size_t i = 0; i < YAJL_GET_OBJECT(ports)->len; i++)
691 ovs_stats_update_iface(YAJL_GET_OBJECT(ports)->values[i]);
692 pthread_mutex_unlock(&g_stats_lock);
693 return;
694 }
696 /* Handle JSON with Interface table initial values */
697 static void ovs_stats_interface_table_result_cb(yajl_val jresult,
698 yajl_val jerror) {
699 if (YAJL_IS_NULL(jerror))
700 ovs_stats_interface_table_change_cb(jresult);
701 else
702 ERROR("%s: Error received from OvSDB. Table: Interface", plugin_name);
703 return;
704 }
706 /* Setup OVS DB table callbacks */
707 static void ovs_stats_initialize(ovs_db_t *pdb) {
708 const char *bridge_columns[] = {"name", "ports", NULL};
709 const char *port_columns[] = {"name", "interfaces", NULL};
710 const char *interface_columns[] = {"name", "statistics", "_uuid",
711 "external_ids", NULL};
713 /* subscribe to a tables */
714 ovs_db_table_cb_register(pdb, "Bridge", bridge_columns,
715 ovs_stats_bridge_table_change_cb,
716 ovs_stats_bridge_table_result_cb,
717 OVS_DB_TABLE_CB_FLAG_INITIAL |
718 OVS_DB_TABLE_CB_FLAG_INSERT |
719 OVS_DB_TABLE_CB_FLAG_MODIFY);
721 ovs_db_table_cb_register(pdb, "Bridge", bridge_columns,
722 ovs_stats_bridge_table_delete_cb, NULL,
723 OVS_DB_TABLE_CB_FLAG_DELETE);
725 ovs_db_table_cb_register(pdb, "Port", port_columns,
726 ovs_stats_port_table_change_cb,
727 ovs_stats_port_table_result_cb,
728 OVS_DB_TABLE_CB_FLAG_INITIAL |
729 OVS_DB_TABLE_CB_FLAG_INSERT |
730 OVS_DB_TABLE_CB_FLAG_MODIFY);
732 ovs_db_table_cb_register(pdb, "Port", port_columns,
733 ovs_stats_port_table_delete_cb, NULL,
734 OVS_DB_TABLE_CB_FLAG_DELETE);
736 ovs_db_table_cb_register(pdb, "Interface", interface_columns,
737 ovs_stats_interface_table_change_cb,
738 ovs_stats_interface_table_result_cb,
739 OVS_DB_TABLE_CB_FLAG_INITIAL |
740 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 = ovs_db_init (ovs_stats_cfg.ovs_db_node,
866 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 }