2 * Copyright (c) 2009, 2010, 2011 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 /* "White box" tests for classifier.
19 * With very few exceptions, these tests obtain complete coverage of every
20 * basic block and every branch in the classifier implementation, e.g. a clean
21 * report from "gcov -b". (Covering the exceptions would require finding
22 * collisions in the hash function used for flow data, etc.)
24 * This test should receive a clean report from "valgrind --leak-check=full":
25 * it frees every heap block that it allocates.
29 #include "classifier.h"
32 #include "byte-order.h"
33 #include "command-line.h"
37 #include "unaligned.h"
42 /* Fields in a rule. */
44 /* struct flow all-caps */ \
45 /* FWW_* bit(s) member name name */ \
46 /* -------------------------- ----------- -------- */ \
47 CLS_FIELD(0, tun_id, TUN_ID) \
48 CLS_FIELD(0, nw_src, NW_SRC) \
49 CLS_FIELD(0, nw_dst, NW_DST) \
50 CLS_FIELD(FWW_IN_PORT, in_port, IN_PORT) \
51 CLS_FIELD(0, vlan_tci, VLAN_TCI) \
52 CLS_FIELD(FWW_DL_TYPE, dl_type, DL_TYPE) \
53 CLS_FIELD(FWW_TP_SRC, tp_src, TP_SRC) \
54 CLS_FIELD(FWW_TP_DST, tp_dst, TP_DST) \
55 CLS_FIELD(FWW_DL_SRC, dl_src, DL_SRC) \
56 CLS_FIELD(FWW_DL_DST | FWW_ETH_MCAST, dl_dst, DL_DST) \
57 CLS_FIELD(FWW_NW_PROTO, nw_proto, NW_PROTO) \
58 CLS_FIELD(FWW_NW_TOS, nw_tos, NW_TOS)
62 * (These are also indexed into struct classifier's 'tables' array.) */
64 #define CLS_FIELD(WILDCARDS, MEMBER, NAME) CLS_F_IDX_##NAME,
70 /* Field information. */
72 int ofs; /* Offset in struct flow. */
73 int len; /* Length in bytes. */
74 flow_wildcards_t wildcards; /* FWW_* bit or bits for this field. */
75 const char *name; /* Name (for debugging). */
78 static const struct cls_field cls_fields[CLS_N_FIELDS] = {
79 #define CLS_FIELD(WILDCARDS, MEMBER, NAME) \
80 { offsetof(struct flow, MEMBER), \
81 sizeof ((struct flow *)0)->MEMBER, \
89 int aux; /* Auxiliary data. */
90 struct cls_rule cls_rule; /* Classifier rule data. */
93 static struct test_rule *
94 test_rule_from_cls_rule(const struct cls_rule *rule)
96 return rule ? CONTAINER_OF(rule, struct test_rule, cls_rule) : NULL;
99 /* Trivial (linear) classifier. */
102 size_t allocated_rules;
103 struct test_rule **rules;
107 tcls_init(struct tcls *tcls)
110 tcls->allocated_rules = 0;
115 tcls_destroy(struct tcls *tcls)
120 for (i = 0; i < tcls->n_rules; i++) {
121 free(tcls->rules[i]);
128 tcls_is_empty(const struct tcls *tcls)
130 return tcls->n_rules == 0;
133 static struct test_rule *
134 tcls_insert(struct tcls *tcls, const struct test_rule *rule)
138 assert(!flow_wildcards_is_exact(&rule->cls_rule.wc)
139 || rule->cls_rule.priority == UINT_MAX);
140 for (i = 0; i < tcls->n_rules; i++) {
141 const struct cls_rule *pos = &tcls->rules[i]->cls_rule;
142 if (cls_rule_equal(pos, &rule->cls_rule)) {
144 free(tcls->rules[i]);
145 tcls->rules[i] = xmemdup(rule, sizeof *rule);
146 return tcls->rules[i];
147 } else if (pos->priority < rule->cls_rule.priority) {
152 if (tcls->n_rules >= tcls->allocated_rules) {
153 tcls->rules = x2nrealloc(tcls->rules, &tcls->allocated_rules,
154 sizeof *tcls->rules);
156 if (i != tcls->n_rules) {
157 memmove(&tcls->rules[i + 1], &tcls->rules[i],
158 sizeof *tcls->rules * (tcls->n_rules - i));
160 tcls->rules[i] = xmemdup(rule, sizeof *rule);
162 return tcls->rules[i];
166 tcls_remove(struct tcls *cls, const struct test_rule *rule)
170 for (i = 0; i < cls->n_rules; i++) {
171 struct test_rule *pos = cls->rules[i];
174 memmove(&cls->rules[i], &cls->rules[i + 1],
175 sizeof *cls->rules * (cls->n_rules - i - 1));
184 match(const struct cls_rule *wild, const struct flow *fixed)
188 for (f_idx = 0; f_idx < CLS_N_FIELDS; f_idx++) {
189 const struct cls_field *f = &cls_fields[f_idx];
193 void *wild_field = (char *) &wild->flow + f->ofs;
194 void *fixed_field = (char *) fixed + f->ofs;
195 eq = ((wild->wc.wildcards & f->wildcards) == f->wildcards
196 || !memcmp(wild_field, fixed_field, f->len));
197 } else if (f_idx == CLS_F_IDX_NW_SRC) {
198 eq = !((fixed->nw_src ^ wild->flow.nw_src) & wild->wc.nw_src_mask);
199 } else if (f_idx == CLS_F_IDX_NW_DST) {
200 eq = !((fixed->nw_dst ^ wild->flow.nw_dst) & wild->wc.nw_dst_mask);
201 } else if (f_idx == CLS_F_IDX_VLAN_TCI) {
202 eq = !((fixed->vlan_tci ^ wild->flow.vlan_tci)
203 & wild->wc.vlan_tci_mask);
204 } else if (f_idx == CLS_F_IDX_TUN_ID) {
205 eq = !((fixed->tun_id ^ wild->flow.tun_id) & wild->wc.tun_id_mask);
217 static struct cls_rule *
218 tcls_lookup(const struct tcls *cls, const struct flow *flow)
222 for (i = 0; i < cls->n_rules; i++) {
223 struct test_rule *pos = cls->rules[i];
224 if (match(&pos->cls_rule, flow)) {
225 return &pos->cls_rule;
232 tcls_delete_matches(struct tcls *cls, const struct cls_rule *target)
236 for (i = 0; i < cls->n_rules; ) {
237 struct test_rule *pos = cls->rules[i];
238 if (!flow_wildcards_has_extra(&pos->cls_rule.wc, &target->wc)
239 && match(target, &pos->cls_rule.flow)) {
240 tcls_remove(cls, pos);
247 static ovs_be32 nw_src_values[] = { CONSTANT_HTONL(0xc0a80001),
248 CONSTANT_HTONL(0xc0a04455) };
249 static ovs_be32 nw_dst_values[] = { CONSTANT_HTONL(0xc0a80002),
250 CONSTANT_HTONL(0xc0a04455) };
251 static ovs_be64 tun_id_values[] = {
253 CONSTANT_HTONLL(UINT64_C(0xfedcba9876543210)) };
254 static uint16_t in_port_values[] = { 1, OFPP_LOCAL };
255 static ovs_be16 vlan_tci_values[] = { CONSTANT_HTONS(101), CONSTANT_HTONS(0) };
256 static ovs_be16 dl_type_values[]
257 = { CONSTANT_HTONS(ETH_TYPE_IP), CONSTANT_HTONS(ETH_TYPE_ARP) };
258 static ovs_be16 tp_src_values[] = { CONSTANT_HTONS(49362),
259 CONSTANT_HTONS(80) };
260 static ovs_be16 tp_dst_values[] = { CONSTANT_HTONS(6667), CONSTANT_HTONS(22) };
261 static uint8_t dl_src_values[][6] = { { 0x00, 0x02, 0xe3, 0x0f, 0x80, 0xa4 },
262 { 0x5e, 0x33, 0x7f, 0x5f, 0x1e, 0x99 } };
263 static uint8_t dl_dst_values[][6] = { { 0x4a, 0x27, 0x71, 0xae, 0x64, 0xc1 },
264 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } };
265 static uint8_t nw_proto_values[] = { IPPROTO_TCP, IPPROTO_ICMP };
266 static uint8_t nw_tos_values[] = { 49, 0 };
268 static void *values[CLS_N_FIELDS][2];
273 values[CLS_F_IDX_TUN_ID][0] = &tun_id_values[0];
274 values[CLS_F_IDX_TUN_ID][1] = &tun_id_values[1];
276 values[CLS_F_IDX_IN_PORT][0] = &in_port_values[0];
277 values[CLS_F_IDX_IN_PORT][1] = &in_port_values[1];
279 values[CLS_F_IDX_VLAN_TCI][0] = &vlan_tci_values[0];
280 values[CLS_F_IDX_VLAN_TCI][1] = &vlan_tci_values[1];
282 values[CLS_F_IDX_DL_SRC][0] = dl_src_values[0];
283 values[CLS_F_IDX_DL_SRC][1] = dl_src_values[1];
285 values[CLS_F_IDX_DL_DST][0] = dl_dst_values[0];
286 values[CLS_F_IDX_DL_DST][1] = dl_dst_values[1];
288 values[CLS_F_IDX_DL_TYPE][0] = &dl_type_values[0];
289 values[CLS_F_IDX_DL_TYPE][1] = &dl_type_values[1];
291 values[CLS_F_IDX_NW_SRC][0] = &nw_src_values[0];
292 values[CLS_F_IDX_NW_SRC][1] = &nw_src_values[1];
294 values[CLS_F_IDX_NW_DST][0] = &nw_dst_values[0];
295 values[CLS_F_IDX_NW_DST][1] = &nw_dst_values[1];
297 values[CLS_F_IDX_NW_PROTO][0] = &nw_proto_values[0];
298 values[CLS_F_IDX_NW_PROTO][1] = &nw_proto_values[1];
300 values[CLS_F_IDX_NW_TOS][0] = &nw_tos_values[0];
301 values[CLS_F_IDX_NW_TOS][1] = &nw_tos_values[1];
303 values[CLS_F_IDX_TP_SRC][0] = &tp_src_values[0];
304 values[CLS_F_IDX_TP_SRC][1] = &tp_src_values[1];
306 values[CLS_F_IDX_TP_DST][0] = &tp_dst_values[0];
307 values[CLS_F_IDX_TP_DST][1] = &tp_dst_values[1];
310 #define N_NW_SRC_VALUES ARRAY_SIZE(nw_src_values)
311 #define N_NW_DST_VALUES ARRAY_SIZE(nw_dst_values)
312 #define N_TUN_ID_VALUES ARRAY_SIZE(tun_id_values)
313 #define N_IN_PORT_VALUES ARRAY_SIZE(in_port_values)
314 #define N_VLAN_TCI_VALUES ARRAY_SIZE(vlan_tci_values)
315 #define N_DL_TYPE_VALUES ARRAY_SIZE(dl_type_values)
316 #define N_TP_SRC_VALUES ARRAY_SIZE(tp_src_values)
317 #define N_TP_DST_VALUES ARRAY_SIZE(tp_dst_values)
318 #define N_DL_SRC_VALUES ARRAY_SIZE(dl_src_values)
319 #define N_DL_DST_VALUES ARRAY_SIZE(dl_dst_values)
320 #define N_NW_PROTO_VALUES ARRAY_SIZE(nw_proto_values)
321 #define N_NW_TOS_VALUES ARRAY_SIZE(nw_tos_values)
323 #define N_FLOW_VALUES (N_NW_SRC_VALUES * \
327 N_VLAN_TCI_VALUES * \
333 N_NW_PROTO_VALUES * \
337 get_value(unsigned int *x, unsigned n_values)
339 unsigned int rem = *x % n_values;
345 compare_classifiers(struct classifier *cls, struct tcls *tcls)
347 static const int confidence = 500;
350 assert(classifier_count(cls) == tcls->n_rules);
351 for (i = 0; i < confidence; i++) {
352 struct cls_rule *cr0, *cr1;
356 x = rand () % N_FLOW_VALUES;
357 flow.nw_src = nw_src_values[get_value(&x, N_NW_SRC_VALUES)];
358 flow.nw_dst = nw_dst_values[get_value(&x, N_NW_DST_VALUES)];
359 flow.tun_id = tun_id_values[get_value(&x, N_TUN_ID_VALUES)];
360 flow.in_port = in_port_values[get_value(&x, N_IN_PORT_VALUES)];
361 flow.vlan_tci = vlan_tci_values[get_value(&x, N_VLAN_TCI_VALUES)];
362 flow.dl_type = dl_type_values[get_value(&x, N_DL_TYPE_VALUES)];
363 flow.tp_src = tp_src_values[get_value(&x, N_TP_SRC_VALUES)];
364 flow.tp_dst = tp_dst_values[get_value(&x, N_TP_DST_VALUES)];
365 memcpy(flow.dl_src, dl_src_values[get_value(&x, N_DL_SRC_VALUES)],
367 memcpy(flow.dl_dst, dl_dst_values[get_value(&x, N_DL_DST_VALUES)],
369 flow.nw_proto = nw_proto_values[get_value(&x, N_NW_PROTO_VALUES)];
370 flow.nw_tos = nw_tos_values[get_value(&x, N_NW_TOS_VALUES)];
372 cr0 = classifier_lookup(cls, &flow);
373 cr1 = tcls_lookup(tcls, &flow);
374 assert((cr0 == NULL) == (cr1 == NULL));
376 const struct test_rule *tr0 = test_rule_from_cls_rule(cr0);
377 const struct test_rule *tr1 = test_rule_from_cls_rule(cr1);
379 assert(cls_rule_equal(cr0, cr1));
380 assert(tr0->aux == tr1->aux);
386 destroy_classifier(struct classifier *cls)
388 struct test_rule *rule, *next_rule;
389 struct cls_cursor cursor;
391 cls_cursor_init(&cursor, cls, NULL);
392 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cls_rule, &cursor) {
393 classifier_remove(cls, &rule->cls_rule);
396 classifier_destroy(cls);
400 check_tables(const struct classifier *cls,
401 int n_tables, int n_rules, int n_dups)
403 const struct cls_table *table;
404 struct flow_wildcards exact_wc;
405 struct test_rule *test_rule;
406 struct cls_cursor cursor;
407 int found_tables = 0;
410 int found_rules2 = 0;
412 flow_wildcards_init_exact(&exact_wc);
413 HMAP_FOR_EACH (table, hmap_node, &cls->tables) {
414 const struct cls_rule *head;
416 assert(!hmap_is_empty(&table->rules));
419 HMAP_FOR_EACH (head, hmap_node, &table->rules) {
420 unsigned int prev_priority = UINT_MAX;
421 const struct cls_rule *rule;
424 LIST_FOR_EACH (rule, list, &head->list) {
425 assert(rule->priority < prev_priority);
426 prev_priority = rule->priority;
429 assert(classifier_find_rule_exactly(cls, rule) == rule);
434 assert(found_tables == hmap_count(&cls->tables));
435 assert(n_tables == -1 || n_tables == hmap_count(&cls->tables));
436 assert(n_rules == -1 || found_rules == n_rules);
437 assert(n_dups == -1 || found_dups == n_dups);
439 cls_cursor_init(&cursor, cls, NULL);
440 CLS_CURSOR_FOR_EACH (test_rule, cls_rule, &cursor) {
443 assert(found_rules == found_rules2);
446 static struct test_rule *
447 make_rule(int wc_fields, unsigned int priority, int value_pat)
449 const struct cls_field *f;
450 struct test_rule *rule;
452 rule = xzalloc(sizeof *rule);
453 cls_rule_init_catchall(&rule->cls_rule, wc_fields ? priority : UINT_MAX);
454 for (f = &cls_fields[0]; f < &cls_fields[CLS_N_FIELDS]; f++) {
455 int f_idx = f - cls_fields;
456 int value_idx = (value_pat & (1u << f_idx)) != 0;
457 memcpy((char *) &rule->cls_rule.flow + f->ofs,
458 values[f_idx][value_idx], f->len);
461 rule->cls_rule.wc.wildcards &= ~f->wildcards;
462 } else if (f_idx == CLS_F_IDX_NW_SRC) {
463 rule->cls_rule.wc.nw_src_mask = htonl(UINT32_MAX);
464 } else if (f_idx == CLS_F_IDX_NW_DST) {
465 rule->cls_rule.wc.nw_dst_mask = htonl(UINT32_MAX);
466 } else if (f_idx == CLS_F_IDX_VLAN_TCI) {
467 rule->cls_rule.wc.vlan_tci_mask = htons(UINT16_MAX);
468 } else if (f_idx == CLS_F_IDX_TUN_ID) {
469 rule->cls_rule.wc.tun_id_mask = htonll(UINT64_MAX);
478 shuffle(unsigned int *p, size_t n)
480 for (; n > 1; n--, p++) {
481 unsigned int *q = &p[rand() % n];
482 unsigned int tmp = *p;
488 /* Tests an empty classifier. */
490 test_empty(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
492 struct classifier cls;
495 classifier_init(&cls);
497 assert(classifier_is_empty(&cls));
498 assert(tcls_is_empty(&tcls));
499 compare_classifiers(&cls, &tcls);
500 classifier_destroy(&cls);
504 /* Destroys a null classifier. */
506 test_destroy_null(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
508 classifier_destroy(NULL);
511 /* Tests classification with one rule at a time. */
513 test_single_rule(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
515 unsigned int wc_fields; /* Hilarious. */
517 for (wc_fields = 0; wc_fields < (1u << CLS_N_FIELDS); wc_fields++) {
518 struct classifier cls;
519 struct test_rule *rule, *tcls_rule;
522 rule = make_rule(wc_fields,
523 hash_bytes(&wc_fields, sizeof wc_fields, 0), 0);
525 classifier_init(&cls);
528 tcls_rule = tcls_insert(&tcls, rule);
529 classifier_insert(&cls, &rule->cls_rule);
530 check_tables(&cls, 1, 1, 0);
531 compare_classifiers(&cls, &tcls);
533 classifier_remove(&cls, &rule->cls_rule);
534 tcls_remove(&tcls, tcls_rule);
535 assert(classifier_is_empty(&cls));
536 assert(tcls_is_empty(&tcls));
537 compare_classifiers(&cls, &tcls);
540 classifier_destroy(&cls);
545 /* Tests replacing one rule by another. */
547 test_rule_replacement(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
549 unsigned int wc_fields;
551 for (wc_fields = 0; wc_fields < (1u << CLS_N_FIELDS); wc_fields++) {
552 struct classifier cls;
553 struct test_rule *rule1;
554 struct test_rule *rule2;
557 rule1 = make_rule(wc_fields, OFP_DEFAULT_PRIORITY, UINT_MAX);
558 rule2 = make_rule(wc_fields, OFP_DEFAULT_PRIORITY, UINT_MAX);
562 classifier_init(&cls);
564 tcls_insert(&tcls, rule1);
565 classifier_insert(&cls, &rule1->cls_rule);
566 check_tables(&cls, 1, 1, 0);
567 compare_classifiers(&cls, &tcls);
571 tcls_insert(&tcls, rule2);
572 assert(test_rule_from_cls_rule(
573 classifier_replace(&cls, &rule2->cls_rule)) == rule1);
575 check_tables(&cls, 1, 1, 0);
576 compare_classifiers(&cls, &tcls);
578 destroy_classifier(&cls);
583 factorial(int n_items)
588 for (i = 2; i <= n_items; i++) {
603 reverse(int *a, int n)
607 for (i = 0; i < n / 2; i++) {
614 next_permutation(int *a, int n)
618 for (k = n - 2; k >= 0; k--) {
619 if (a[k] < a[k + 1]) {
622 for (l = n - 1; ; l--) {
625 reverse(a + (k + 1), n - (k + 1));
634 /* Tests classification with rules that have the same matching criteria. */
636 test_many_rules_in_one_list (int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
638 enum { N_RULES = 3 };
641 for (n_pris = N_RULES; n_pris >= 1; n_pris--) {
642 int ops[N_RULES * 2];
648 for (i = 1; i < N_RULES; i++) {
649 pris[i] = pris[i - 1] + (n_pris > i);
652 for (i = 0; i < N_RULES * 2; i++) {
658 struct test_rule *rules[N_RULES];
659 struct test_rule *tcls_rules[N_RULES];
660 int pri_rules[N_RULES];
661 struct classifier cls;
666 for (i = 0; i < N_RULES; i++) {
667 rules[i] = make_rule(456, pris[i], 0);
668 tcls_rules[i] = NULL;
672 classifier_init(&cls);
675 for (i = 0; i < ARRAY_SIZE(ops); i++) {
679 if (!tcls_rules[j]) {
680 struct test_rule *displaced_rule;
682 tcls_rules[j] = tcls_insert(&tcls, rules[j]);
683 displaced_rule = test_rule_from_cls_rule(
684 classifier_replace(&cls, &rules[j]->cls_rule));
685 if (pri_rules[pris[j]] >= 0) {
686 int k = pri_rules[pris[j]];
687 assert(displaced_rule != NULL);
688 assert(displaced_rule != rules[j]);
689 assert(pris[j] == displaced_rule->cls_rule.priority);
690 tcls_rules[k] = NULL;
692 assert(displaced_rule == NULL);
694 pri_rules[pris[j]] = j;
696 classifier_remove(&cls, &rules[j]->cls_rule);
697 tcls_remove(&tcls, tcls_rules[j]);
698 tcls_rules[j] = NULL;
699 pri_rules[pris[j]] = -1;
703 for (m = 0; m < N_RULES; m++) {
704 n += tcls_rules[m] != NULL;
706 check_tables(&cls, n > 0, n, n - 1);
708 compare_classifiers(&cls, &tcls);
711 classifier_destroy(&cls);
714 for (i = 0; i < N_RULES; i++) {
717 } while (next_permutation(ops, ARRAY_SIZE(ops)));
718 assert(n_permutations == (factorial(N_RULES * 2) >> N_RULES));
723 count_ones(unsigned long int x)
736 array_contains(int *array, int n, int value)
740 for (i = 0; i < n; i++) {
741 if (array[i] == value) {
749 /* Tests classification with two rules at a time that fall into the same
750 * table but different lists. */
752 test_many_rules_in_one_table(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
756 for (iteration = 0; iteration < 50; iteration++) {
757 enum { N_RULES = 20 };
758 struct test_rule *rules[N_RULES];
759 struct test_rule *tcls_rules[N_RULES];
760 struct classifier cls;
762 int value_pats[N_RULES];
768 wcf = rand() & ((1u << CLS_N_FIELDS) - 1);
769 value_mask = ~wcf & ((1u << CLS_N_FIELDS) - 1);
770 } while ((1 << count_ones(value_mask)) < N_RULES);
772 classifier_init(&cls);
775 for (i = 0; i < N_RULES; i++) {
776 unsigned int priority = rand();
779 value_pats[i] = rand() & value_mask;
780 } while (array_contains(value_pats, i, value_pats[i]));
782 rules[i] = make_rule(wcf, priority, value_pats[i]);
783 tcls_rules[i] = tcls_insert(&tcls, rules[i]);
784 classifier_insert(&cls, &rules[i]->cls_rule);
786 check_tables(&cls, 1, i + 1, 0);
787 compare_classifiers(&cls, &tcls);
790 for (i = 0; i < N_RULES; i++) {
791 tcls_remove(&tcls, tcls_rules[i]);
792 classifier_remove(&cls, &rules[i]->cls_rule);
795 check_tables(&cls, i < N_RULES - 1, N_RULES - (i + 1), 0);
796 compare_classifiers(&cls, &tcls);
799 classifier_destroy(&cls);
804 /* Tests classification with many rules at a time that fall into random lists
807 test_many_rules_in_n_tables(int n_tables)
809 enum { MAX_RULES = 50 };
814 assert(n_tables < 10);
815 for (i = 0; i < n_tables; i++) {
817 wcfs[i] = rand() & ((1u << CLS_N_FIELDS) - 1);
818 } while (array_contains(wcfs, i, wcfs[i]));
821 for (iteration = 0; iteration < 30; iteration++) {
822 unsigned int priorities[MAX_RULES];
823 struct classifier cls;
827 for (i = 0; i < MAX_RULES; i++) {
828 priorities[i] = i * 129;
830 shuffle(priorities, ARRAY_SIZE(priorities));
832 classifier_init(&cls);
835 for (i = 0; i < MAX_RULES; i++) {
836 struct test_rule *rule;
837 unsigned int priority = priorities[i];
838 int wcf = wcfs[rand() % n_tables];
839 int value_pat = rand() & ((1u << CLS_N_FIELDS) - 1);
840 rule = make_rule(wcf, priority, value_pat);
841 tcls_insert(&tcls, rule);
842 classifier_insert(&cls, &rule->cls_rule);
843 check_tables(&cls, -1, i + 1, -1);
844 compare_classifiers(&cls, &tcls);
847 while (!classifier_is_empty(&cls)) {
848 struct test_rule *rule, *next_rule;
849 struct test_rule *target;
850 struct cls_cursor cursor;
852 target = xmemdup(tcls.rules[rand() % tcls.n_rules],
853 sizeof(struct test_rule));
855 cls_cursor_init(&cursor, &cls, &target->cls_rule);
856 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cls_rule, &cursor) {
857 classifier_remove(&cls, &rule->cls_rule);
860 tcls_delete_matches(&tcls, &target->cls_rule);
861 compare_classifiers(&cls, &tcls);
862 check_tables(&cls, -1, -1, -1);
866 destroy_classifier(&cls);
872 test_many_rules_in_two_tables(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
874 test_many_rules_in_n_tables(2);
878 test_many_rules_in_five_tables(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
880 test_many_rules_in_n_tables(5);
883 static const struct command commands[] = {
884 {"empty", 0, 0, test_empty},
885 {"destroy-null", 0, 0, test_destroy_null},
886 {"single-rule", 0, 0, test_single_rule},
887 {"rule-replacement", 0, 0, test_rule_replacement},
888 {"many-rules-in-one-list", 0, 0, test_many_rules_in_one_list},
889 {"many-rules-in-one-table", 0, 0, test_many_rules_in_one_table},
890 {"many-rules-in-two-tables", 0, 0, test_many_rules_in_two_tables},
891 {"many-rules-in-five-tables", 0, 0, test_many_rules_in_five_tables},
896 main(int argc, char *argv[])
898 set_program_name(argv[0]);
900 run_command(argc - 1, argv + 1, commands);