2 * Copyright (c) 2009, 2010 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 "command-line.h"
40 int aux; /* Auxiliary data. */
41 struct cls_rule cls_rule; /* Classifier rule data. */
44 static struct test_rule *
45 test_rule_from_cls_rule(const struct cls_rule *rule)
47 return rule ? CONTAINER_OF(rule, struct test_rule, cls_rule) : NULL;
50 /* Trivial (linear) classifier. */
53 size_t allocated_rules;
54 struct test_rule **rules;
58 tcls_init(struct tcls *tcls)
61 tcls->allocated_rules = 0;
66 tcls_destroy(struct tcls *tcls)
71 for (i = 0; i < tcls->n_rules; i++) {
79 tcls_count_exact(const struct tcls *tcls)
85 for (i = 0; i < tcls->n_rules; i++) {
86 n_exact += tcls->rules[i]->cls_rule.wc.wildcards == 0;
92 tcls_is_empty(const struct tcls *tcls)
94 return tcls->n_rules == 0;
97 static struct test_rule *
98 tcls_insert(struct tcls *tcls, const struct test_rule *rule)
102 assert(rule->cls_rule.wc.wildcards || rule->cls_rule.priority == UINT_MAX);
103 for (i = 0; i < tcls->n_rules; i++) {
104 const struct cls_rule *pos = &tcls->rules[i]->cls_rule;
105 if (pos->priority == rule->cls_rule.priority
106 && pos->wc.wildcards == rule->cls_rule.wc.wildcards
107 && flow_equal(&pos->flow, &rule->cls_rule.flow)) {
109 * XXX flow_equal should ignore wildcarded fields */
110 free(tcls->rules[i]);
111 tcls->rules[i] = xmemdup(rule, sizeof *rule);
112 return tcls->rules[i];
113 } else if (pos->priority < rule->cls_rule.priority) {
118 if (tcls->n_rules >= tcls->allocated_rules) {
119 tcls->rules = x2nrealloc(tcls->rules, &tcls->allocated_rules,
120 sizeof *tcls->rules);
122 if (i != tcls->n_rules) {
123 memmove(&tcls->rules[i + 1], &tcls->rules[i],
124 sizeof *tcls->rules * (tcls->n_rules - i));
126 tcls->rules[i] = xmemdup(rule, sizeof *rule);
128 return tcls->rules[i];
132 tcls_remove(struct tcls *cls, const struct test_rule *rule)
136 for (i = 0; i < cls->n_rules; i++) {
137 struct test_rule *pos = cls->rules[i];
140 memmove(&cls->rules[i], &cls->rules[i + 1],
141 sizeof *cls->rules * (cls->n_rules - i - 1));
150 read_uint32(const void *p)
153 memcpy(&x, p, sizeof x);
158 match(const struct cls_rule *wild, const flow_t *fixed)
162 for (f_idx = 0; f_idx < CLS_N_FIELDS; f_idx++) {
163 const struct cls_field *f = &cls_fields[f_idx];
164 void *wild_field = (char *) &wild->flow + f->ofs;
165 void *fixed_field = (char *) fixed + f->ofs;
167 if ((wild->wc.wildcards & f->wildcards) == f->wildcards ||
168 !memcmp(wild_field, fixed_field, f->len)) {
169 /* Definite match. */
173 if (wild->wc.wildcards & f->wildcards) {
174 uint32_t test = read_uint32(wild_field);
175 uint32_t ip = read_uint32(fixed_field);
176 int shift = (f_idx == CLS_F_IDX_NW_SRC
177 ? OFPFW_NW_SRC_SHIFT : OFPFW_NW_DST_SHIFT);
178 uint32_t mask = flow_nw_bits_to_mask(wild->wc.wildcards, shift);
179 if (!((test ^ ip) & mask)) {
189 static struct cls_rule *
190 tcls_lookup(const struct tcls *cls, const flow_t *flow, int include)
194 for (i = 0; i < cls->n_rules; i++) {
195 struct test_rule *pos = cls->rules[i];
196 uint32_t wildcards = pos->cls_rule.wc.wildcards;
197 if (include & (wildcards ? CLS_INC_WILD : CLS_INC_EXACT)
198 && match(&pos->cls_rule, flow)) {
199 return &pos->cls_rule;
206 tcls_delete_matches(struct tcls *cls,
207 const struct cls_rule *target,
212 for (i = 0; i < cls->n_rules; ) {
213 struct test_rule *pos = cls->rules[i];
214 uint32_t wildcards = pos->cls_rule.wc.wildcards;
215 if (include & (wildcards ? CLS_INC_WILD : CLS_INC_EXACT)
216 && match(target, &pos->cls_rule.flow)) {
217 tcls_remove(cls, pos);
224 #ifdef WORDS_BIGENDIAN
225 #define T_HTONL(VALUE) ((uint32_t) (VALUE))
226 #define T_HTONS(VALUE) ((uint32_t) (VALUE))
228 #define T_HTONL(VALUE) (((((uint32_t) (VALUE)) & 0x000000ff) << 24) | \
229 ((((uint32_t) (VALUE)) & 0x0000ff00) << 8) | \
230 ((((uint32_t) (VALUE)) & 0x00ff0000) >> 8) | \
231 ((((uint32_t) (VALUE)) & 0xff000000) >> 24))
232 #define T_HTONS(VALUE) (((((uint16_t) (VALUE)) & 0xff00) >> 8) | \
233 ((((uint16_t) (VALUE)) & 0x00ff) << 8))
236 static uint32_t nw_src_values[] = { T_HTONL(0xc0a80001),
237 T_HTONL(0xc0a04455) };
238 static uint32_t nw_dst_values[] = { T_HTONL(0xc0a80002),
239 T_HTONL(0xc0a04455) };
240 static uint32_t tun_id_values[] = { 0, 0xffff0000 };
241 static uint16_t in_port_values[] = { T_HTONS(1), T_HTONS(OFPP_LOCAL) };
242 static uint16_t dl_vlan_values[] = { T_HTONS(101), T_HTONS(0) };
243 static uint8_t dl_vlan_pcp_values[] = { 7, 0 };
244 static uint16_t dl_type_values[]
245 = { T_HTONS(ETH_TYPE_IP), T_HTONS(ETH_TYPE_ARP) };
246 static uint16_t tp_src_values[] = { T_HTONS(49362), T_HTONS(80) };
247 static uint16_t tp_dst_values[] = { T_HTONS(6667), T_HTONS(22) };
248 static uint8_t dl_src_values[][6] = { { 0x00, 0x02, 0xe3, 0x0f, 0x80, 0xa4 },
249 { 0x5e, 0x33, 0x7f, 0x5f, 0x1e, 0x99 } };
250 static uint8_t dl_dst_values[][6] = { { 0x4a, 0x27, 0x71, 0xae, 0x64, 0xc1 },
251 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } };
252 static uint8_t nw_proto_values[] = { IP_TYPE_TCP, IP_TYPE_ICMP };
253 static uint8_t nw_tos_values[] = { 49, 0 };
255 static void *values[CLS_N_FIELDS][2];
260 values[CLS_F_IDX_TUN_ID][0] = &tun_id_values[0];
261 values[CLS_F_IDX_TUN_ID][1] = &tun_id_values[1];
263 values[CLS_F_IDX_IN_PORT][0] = &in_port_values[0];
264 values[CLS_F_IDX_IN_PORT][1] = &in_port_values[1];
266 values[CLS_F_IDX_DL_VLAN][0] = &dl_vlan_values[0];
267 values[CLS_F_IDX_DL_VLAN][1] = &dl_vlan_values[1];
269 values[CLS_F_IDX_DL_VLAN_PCP][0] = &dl_vlan_pcp_values[0];
270 values[CLS_F_IDX_DL_VLAN_PCP][1] = &dl_vlan_pcp_values[1];
272 values[CLS_F_IDX_DL_SRC][0] = dl_src_values[0];
273 values[CLS_F_IDX_DL_SRC][1] = dl_src_values[1];
275 values[CLS_F_IDX_DL_DST][0] = dl_dst_values[0];
276 values[CLS_F_IDX_DL_DST][1] = dl_dst_values[1];
278 values[CLS_F_IDX_DL_TYPE][0] = &dl_type_values[0];
279 values[CLS_F_IDX_DL_TYPE][1] = &dl_type_values[1];
281 values[CLS_F_IDX_NW_SRC][0] = &nw_src_values[0];
282 values[CLS_F_IDX_NW_SRC][1] = &nw_src_values[1];
284 values[CLS_F_IDX_NW_DST][0] = &nw_dst_values[0];
285 values[CLS_F_IDX_NW_DST][1] = &nw_dst_values[1];
287 values[CLS_F_IDX_NW_PROTO][0] = &nw_proto_values[0];
288 values[CLS_F_IDX_NW_PROTO][1] = &nw_proto_values[1];
290 values[CLS_F_IDX_NW_TOS][0] = &nw_tos_values[0];
291 values[CLS_F_IDX_NW_TOS][1] = &nw_tos_values[1];
293 values[CLS_F_IDX_TP_SRC][0] = &tp_src_values[0];
294 values[CLS_F_IDX_TP_SRC][1] = &tp_src_values[1];
296 values[CLS_F_IDX_TP_DST][0] = &tp_dst_values[0];
297 values[CLS_F_IDX_TP_DST][1] = &tp_dst_values[1];
300 #define N_NW_SRC_VALUES ARRAY_SIZE(nw_src_values)
301 #define N_NW_DST_VALUES ARRAY_SIZE(nw_dst_values)
302 #define N_TUN_ID_VALUES ARRAY_SIZE(tun_id_values)
303 #define N_IN_PORT_VALUES ARRAY_SIZE(in_port_values)
304 #define N_DL_VLAN_VALUES ARRAY_SIZE(dl_vlan_values)
305 #define N_DL_VLAN_PCP_VALUES ARRAY_SIZE(dl_vlan_pcp_values)
306 #define N_DL_TYPE_VALUES ARRAY_SIZE(dl_type_values)
307 #define N_TP_SRC_VALUES ARRAY_SIZE(tp_src_values)
308 #define N_TP_DST_VALUES ARRAY_SIZE(tp_dst_values)
309 #define N_DL_SRC_VALUES ARRAY_SIZE(dl_src_values)
310 #define N_DL_DST_VALUES ARRAY_SIZE(dl_dst_values)
311 #define N_NW_PROTO_VALUES ARRAY_SIZE(nw_proto_values)
312 #define N_NW_TOS_VALUES ARRAY_SIZE(nw_tos_values)
314 #define N_FLOW_VALUES (N_NW_SRC_VALUES * \
319 N_DL_VLAN_PCP_VALUES * \
325 N_NW_PROTO_VALUES * \
329 get_value(unsigned int *x, unsigned n_values)
331 unsigned int rem = *x % n_values;
336 static struct cls_rule *
337 lookup_with_include_bits(const struct classifier *cls,
338 const flow_t *flow, int include)
342 return classifier_lookup_wild(cls, flow);
344 return classifier_lookup_exact(cls, flow);
345 case CLS_INC_WILD | CLS_INC_EXACT:
346 return classifier_lookup(cls, flow);
353 compare_classifiers(struct classifier *cls, struct tcls *tcls)
355 static const int confidence = 500;
358 assert(classifier_count(cls) == tcls->n_rules);
359 assert(classifier_count_exact(cls) == tcls_count_exact(tcls));
360 for (i = 0; i < confidence; i++) {
361 struct cls_rule *cr0, *cr1;
366 x = rand () % N_FLOW_VALUES;
367 flow.nw_src = nw_src_values[get_value(&x, N_NW_SRC_VALUES)];
368 flow.nw_dst = nw_dst_values[get_value(&x, N_NW_DST_VALUES)];
369 flow.tun_id = tun_id_values[get_value(&x, N_TUN_ID_VALUES)];
370 flow.in_port = in_port_values[get_value(&x, N_IN_PORT_VALUES)];
371 flow.dl_vlan = dl_vlan_values[get_value(&x, N_DL_VLAN_VALUES)];
372 flow.dl_vlan_pcp = dl_vlan_pcp_values[get_value(&x,
373 N_DL_VLAN_PCP_VALUES)];
374 flow.dl_type = dl_type_values[get_value(&x, N_DL_TYPE_VALUES)];
375 flow.tp_src = tp_src_values[get_value(&x, N_TP_SRC_VALUES)];
376 flow.tp_dst = tp_dst_values[get_value(&x, N_TP_DST_VALUES)];
377 memcpy(flow.dl_src, dl_src_values[get_value(&x, N_DL_SRC_VALUES)],
379 memcpy(flow.dl_dst, dl_dst_values[get_value(&x, N_DL_DST_VALUES)],
381 flow.nw_proto = nw_proto_values[get_value(&x, N_NW_PROTO_VALUES)];
382 flow.nw_tos = nw_tos_values[get_value(&x, N_NW_TOS_VALUES)];
383 memset(flow.reserved, 0, sizeof flow.reserved);
385 for (include = 1; include <= 3; include++) {
386 cr0 = lookup_with_include_bits(cls, &flow, include);
387 cr1 = tcls_lookup(tcls, &flow, include);
388 assert((cr0 == NULL) == (cr1 == NULL));
390 const struct test_rule *tr0 = test_rule_from_cls_rule(cr0);
391 const struct test_rule *tr1 = test_rule_from_cls_rule(cr1);
393 assert(flow_equal(&cr0->flow, &cr1->flow));
394 assert(cr0->wc.wildcards == cr1->wc.wildcards);
395 assert(cr0->priority == cr1->priority);
396 /* Skip nw_src_mask and nw_dst_mask, because they are derived
397 * members whose values are used only for optimization. */
398 assert(tr0->aux == tr1->aux);
405 free_rule(struct cls_rule *cls_rule, void *cls)
407 classifier_remove(cls, cls_rule);
408 free(test_rule_from_cls_rule(cls_rule));
412 destroy_classifier(struct classifier *cls)
414 classifier_for_each(cls, CLS_INC_ALL, free_rule, cls);
415 classifier_destroy(cls);
419 check_tables(const struct classifier *cls,
420 int n_tables, int n_buckets, int n_rules)
422 int found_tables = 0;
423 int found_buckets = 0;
427 BUILD_ASSERT(CLS_N_FIELDS == ARRAY_SIZE(cls->tables));
428 for (i = 0; i < CLS_N_FIELDS; i++) {
429 const struct cls_bucket *bucket;
430 if (!hmap_is_empty(&cls->tables[i])) {
433 HMAP_FOR_EACH (bucket, struct cls_bucket, hmap_node, &cls->tables[i]) {
435 assert(!list_is_empty(&bucket->rules));
436 found_rules += list_size(&bucket->rules);
440 if (!hmap_is_empty(&cls->exact_table)) {
443 found_rules += hmap_count(&cls->exact_table);
446 assert(n_tables == -1 || found_tables == n_tables);
447 assert(n_rules == -1 || found_rules == n_rules);
448 assert(n_buckets == -1 || found_buckets == n_buckets);
451 static struct test_rule *
452 make_rule(int wc_fields, unsigned int priority, int value_pat)
454 const struct cls_field *f;
455 struct test_rule *rule;
460 memset(&flow, 0, sizeof flow);
461 for (f = &cls_fields[0]; f < &cls_fields[CLS_N_FIELDS]; f++) {
462 int f_idx = f - cls_fields;
463 if (wc_fields & (1u << f_idx)) {
464 wildcards |= f->wildcards;
466 int value_idx = (value_pat & (1u << f_idx)) != 0;
467 memcpy((char *) &flow + f->ofs, values[f_idx][value_idx], f->len);
471 rule = xzalloc(sizeof *rule);
472 cls_rule_from_flow(&flow, wildcards, !wildcards ? UINT_MAX : priority,
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);
530 assert(!classifier_insert(&cls, &rule->cls_rule));
532 classifier_insert_exact(&cls, &rule->cls_rule);
534 check_tables(&cls, 1, 1, 1);
535 compare_classifiers(&cls, &tcls);
537 classifier_remove(&cls, &rule->cls_rule);
538 tcls_remove(&tcls, tcls_rule);
539 assert(classifier_is_empty(&cls));
540 assert(tcls_is_empty(&tcls));
541 compare_classifiers(&cls, &tcls);
544 classifier_destroy(&cls);
549 /* Tests replacing one rule by another. */
551 test_rule_replacement(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
553 unsigned int wc_fields;
555 for (wc_fields = 0; wc_fields < (1u << CLS_N_FIELDS); wc_fields++) {
556 struct classifier cls;
557 struct test_rule *rule1;
558 struct test_rule *rule2;
561 rule1 = make_rule(wc_fields, OFP_DEFAULT_PRIORITY, UINT_MAX);
562 rule2 = make_rule(wc_fields, OFP_DEFAULT_PRIORITY, UINT_MAX);
566 classifier_init(&cls);
568 tcls_insert(&tcls, rule1);
569 assert(!classifier_insert(&cls, &rule1->cls_rule));
570 check_tables(&cls, 1, 1, 1);
571 compare_classifiers(&cls, &tcls);
575 tcls_insert(&tcls, rule2);
576 assert(test_rule_from_cls_rule(
577 classifier_insert(&cls, &rule2->cls_rule)) == rule1);
579 check_tables(&cls, 1, 1, 1);
580 compare_classifiers(&cls, &tcls);
582 destroy_classifier(&cls);
587 table_mask(int table)
589 return ((1u << CLS_N_FIELDS) - 1) & ~((1u << table) - 1);
593 random_wcf_in_table(int table, int seed)
595 int wc_fields = (1u << table) | hash_int(seed, 0);
596 return wc_fields & table_mask(table);
599 /* Tests classification with two rules at a time that fall into the same
602 test_two_rules_in_one_bucket(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
604 int table, rel_pri, wcf_pat, value_pat;
606 for (table = 0; table <= CLS_N_FIELDS; table++) {
607 for (rel_pri = -1; rel_pri <= +1; rel_pri++) {
608 for (wcf_pat = 0; wcf_pat < 4; wcf_pat++) {
609 int n_value_pats = table == CLS_N_FIELDS - 1 ? 1 : 2;
610 for (value_pat = 0; value_pat < n_value_pats; value_pat++) {
611 struct test_rule *rule1, *tcls_rule1;
612 struct test_rule *rule2, *tcls_rule2;
613 struct test_rule *displaced_rule;
614 struct classifier cls;
616 unsigned int pri1, pri2;
619 if (table != CLS_F_IDX_EXACT) {
620 /* We can use identical priorities in this test because
621 * the classifier always chooses the rule added later
622 * for equal-priority rules that fall into the same
624 pri1 = table * 257 + 50;
625 pri2 = pri1 + rel_pri;
628 ? random_wcf_in_table(table, pri1)
631 ? random_wcf_in_table(table, pri2)
634 wcf1 &= ~(1u << (CLS_N_FIELDS - 1));
635 wcf2 &= ~(1u << (CLS_N_FIELDS - 1));
638 /* This classifier always puts exact-match rules at
639 * maximum priority. */
640 pri1 = pri2 = UINT_MAX;
642 /* No wildcard fields. */
646 rule1 = make_rule(wcf1, pri1, 0);
647 rule2 = make_rule(wcf2, pri2,
648 value_pat << (CLS_N_FIELDS - 1));
650 classifier_init(&cls);
653 tcls_rule1 = tcls_insert(&tcls, rule1);
654 tcls_rule2 = tcls_insert(&tcls, rule2);
655 assert(!classifier_insert(&cls, &rule1->cls_rule));
656 displaced_rule = test_rule_from_cls_rule(
657 classifier_insert(&cls, &rule2->cls_rule));
658 if (wcf1 != wcf2 || pri1 != pri2 || value_pat) {
659 assert(!displaced_rule);
661 check_tables(&cls, 1, 1, 2);
662 compare_classifiers(&cls, &tcls);
664 classifier_remove(&cls, &rule1->cls_rule);
665 tcls_remove(&tcls, tcls_rule1);
666 check_tables(&cls, 1, 1, 1);
667 compare_classifiers(&cls, &tcls);
669 assert(displaced_rule == rule1);
670 check_tables(&cls, 1, 1, 1);
671 compare_classifiers(&cls, &tcls);
675 classifier_remove(&cls, &rule2->cls_rule);
676 tcls_remove(&tcls, tcls_rule2);
677 compare_classifiers(&cls, &tcls);
680 destroy_classifier(&cls);
688 /* Tests classification with two rules at a time that fall into the same
689 * table but different buckets. */
691 test_two_rules_in_one_table(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
693 int table, rel_pri, wcf_pat;
695 /* Skip tables 0 and CLS_F_IDX_EXACT because they have one bucket. */
696 for (table = 1; table < CLS_N_FIELDS; table++) {
697 for (rel_pri = -1; rel_pri <= +1; rel_pri++) {
698 for (wcf_pat = 0; wcf_pat < 5; wcf_pat++) {
699 struct test_rule *rule1, *tcls_rule1;
700 struct test_rule *rule2, *tcls_rule2;
701 struct classifier cls;
703 unsigned int pri1, pri2;
705 int value_mask, value_pat1, value_pat2;
708 /* We can use identical priorities in this test because the
709 * classifier always chooses the rule added later for
710 * equal-priority rules that fall into the same table. */
711 pri1 = table * 257 + 50;
712 pri2 = pri1 + rel_pri;
715 wcf1 = wcf2 = random_wcf_in_table(table, pri1);
718 ? random_wcf_in_table(table, pri1)
721 ? random_wcf_in_table(table, pri2)
725 /* Generate value patterns that will put the two rules into
726 * different buckets. */
727 value_mask = ((1u << table) - 1);
728 value_pat1 = hash_int(pri1, 1) & value_mask;
731 value_pat2 = (hash_int(pri2, i++) & value_mask);
732 } while (value_pat1 == value_pat2);
733 rule1 = make_rule(wcf1, pri1, value_pat1);
734 rule2 = make_rule(wcf2, pri2, value_pat2);
736 classifier_init(&cls);
739 tcls_rule1 = tcls_insert(&tcls, rule1);
740 tcls_rule2 = tcls_insert(&tcls, rule2);
741 assert(!classifier_insert(&cls, &rule1->cls_rule));
742 assert(!classifier_insert(&cls, &rule2->cls_rule));
743 check_tables(&cls, 1, 2, 2);
744 compare_classifiers(&cls, &tcls);
746 classifier_remove(&cls, &rule1->cls_rule);
747 tcls_remove(&tcls, tcls_rule1);
748 check_tables(&cls, 1, 1, 1);
749 compare_classifiers(&cls, &tcls);
752 classifier_remove(&cls, &rule2->cls_rule);
753 tcls_remove(&tcls, tcls_rule2);
754 compare_classifiers(&cls, &tcls);
757 classifier_destroy(&cls);
764 /* Tests classification with two rules at a time that fall into different
767 test_two_rules_in_different_tables(int argc OVS_UNUSED,
768 char *argv[] OVS_UNUSED)
770 int table1, table2, rel_pri, wcf_pat;
772 for (table1 = 0; table1 < CLS_N_FIELDS; table1++) {
773 for (table2 = table1 + 1; table2 <= CLS_N_FIELDS; table2++) {
774 for (rel_pri = 0; rel_pri < 2; rel_pri++) {
775 for (wcf_pat = 0; wcf_pat < 4; wcf_pat++) {
776 struct test_rule *rule1, *tcls_rule1;
777 struct test_rule *rule2, *tcls_rule2;
778 struct classifier cls;
780 unsigned int pri1, pri2;
783 /* We must use unique priorities in this test because the
784 * classifier makes the rule choice undefined for rules of
785 * equal priority that fall into different tables. (In
786 * practice, lower-numbered tables win.) */
787 pri1 = table1 * 257 + 50;
788 pri2 = rel_pri ? pri1 - 1 : pri1 + 1;
791 ? random_wcf_in_table(table1, pri1)
794 ? random_wcf_in_table(table2, pri2)
797 if (table2 == CLS_F_IDX_EXACT) {
802 rule1 = make_rule(wcf1, pri1, 0);
803 rule2 = make_rule(wcf2, pri2, 0);
805 classifier_init(&cls);
808 tcls_rule1 = tcls_insert(&tcls, rule1);
809 tcls_rule2 = tcls_insert(&tcls, rule2);
810 assert(!classifier_insert(&cls, &rule1->cls_rule));
811 assert(!classifier_insert(&cls, &rule2->cls_rule));
812 check_tables(&cls, 2, 2, 2);
813 compare_classifiers(&cls, &tcls);
815 classifier_remove(&cls, &rule1->cls_rule);
816 tcls_remove(&tcls, tcls_rule1);
817 check_tables(&cls, 1, 1, 1);
818 compare_classifiers(&cls, &tcls);
821 classifier_remove(&cls, &rule2->cls_rule);
822 tcls_remove(&tcls, tcls_rule2);
823 compare_classifiers(&cls, &tcls);
826 classifier_destroy(&cls);
834 /* Tests classification with many rules at a time that fall into the same
835 * bucket but have unique priorities (and various wildcards). */
837 test_many_rules_in_one_bucket(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
839 enum { MAX_RULES = 50 };
840 int iteration, table;
842 for (iteration = 0; iteration < 3; iteration++) {
843 for (table = 0; table <= CLS_N_FIELDS; table++) {
844 unsigned int priorities[MAX_RULES];
845 struct classifier cls;
849 srand(hash_int(table, iteration));
850 for (i = 0; i < MAX_RULES; i++) {
851 priorities[i] = i * 129;
853 shuffle(priorities, ARRAY_SIZE(priorities));
855 classifier_init(&cls);
858 for (i = 0; i < MAX_RULES; i++) {
859 struct test_rule *rule;
860 unsigned int priority = priorities[i];
863 wcf = random_wcf_in_table(table, priority);
864 rule = make_rule(wcf, priority,
865 table == CLS_F_IDX_EXACT ? i : 1234);
866 tcls_insert(&tcls, rule);
867 assert(!classifier_insert(&cls, &rule->cls_rule));
868 check_tables(&cls, 1, 1, i + 1);
869 compare_classifiers(&cls, &tcls);
872 destroy_classifier(&cls);
878 /* Tests classification with many rules at a time that fall into the same
879 * table but random buckets. */
881 test_many_rules_in_one_table(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
883 enum { MAX_RULES = 50 };
884 int iteration, table;
886 for (iteration = 0; iteration < 3; iteration++) {
887 for (table = 0; table < CLS_N_FIELDS; table++) {
888 unsigned int priorities[MAX_RULES];
889 struct classifier cls;
893 srand(hash_int(table, iteration));
894 for (i = 0; i < MAX_RULES; i++) {
895 priorities[i] = i * 129;
897 shuffle(priorities, ARRAY_SIZE(priorities));
899 classifier_init(&cls);
902 for (i = 0; i < MAX_RULES; i++) {
903 struct test_rule *rule;
904 unsigned int priority = priorities[i];
907 wcf = random_wcf_in_table(table, priority);
908 rule = make_rule(wcf, priority, hash_int(priority, 1));
909 tcls_insert(&tcls, rule);
910 assert(!classifier_insert(&cls, &rule->cls_rule));
911 check_tables(&cls, 1, -1, i + 1);
912 compare_classifiers(&cls, &tcls);
915 destroy_classifier(&cls);
921 /* Tests classification with many rules at a time that fall into random buckets
922 * in random tables. */
924 test_many_rules_in_different_tables(int argc OVS_UNUSED,
925 char *argv[] OVS_UNUSED)
927 enum { MAX_RULES = 50 };
930 for (iteration = 0; iteration < 30; iteration++) {
931 unsigned int priorities[MAX_RULES];
932 struct classifier cls;
937 for (i = 0; i < MAX_RULES; i++) {
938 priorities[i] = i * 129;
940 shuffle(priorities, ARRAY_SIZE(priorities));
942 classifier_init(&cls);
945 for (i = 0; i < MAX_RULES; i++) {
946 struct test_rule *rule;
947 unsigned int priority = priorities[i];
948 int table = rand() % (CLS_N_FIELDS + 1);
949 int wcf = random_wcf_in_table(table, rand());
950 int value_pat = rand() & ((1u << CLS_N_FIELDS) - 1);
951 rule = make_rule(wcf, priority, value_pat);
952 tcls_insert(&tcls, rule);
953 assert(!classifier_insert(&cls, &rule->cls_rule));
954 check_tables(&cls, -1, -1, i + 1);
955 compare_classifiers(&cls, &tcls);
958 while (!classifier_is_empty(&cls)) {
959 struct test_rule *rule = xmemdup(tcls.rules[rand() % tcls.n_rules],
960 sizeof(struct test_rule));
961 int include = rand() % 2 ? CLS_INC_WILD : CLS_INC_EXACT;
962 include |= (rule->cls_rule.wc.wildcards
963 ? CLS_INC_WILD : CLS_INC_EXACT);
964 classifier_for_each_match(&cls, &rule->cls_rule, include,
966 tcls_delete_matches(&tcls, &rule->cls_rule, include);
967 compare_classifiers(&cls, &tcls);
971 destroy_classifier(&cls);
976 static const struct command commands[] = {
977 {"empty", 0, 0, test_empty},
978 {"destroy-null", 0, 0, test_destroy_null},
979 {"single-rule", 0, 0, test_single_rule},
980 {"rule-replacement", 0, 0, test_rule_replacement},
981 {"two-rules-in-one-bucket", 0, 0, test_two_rules_in_one_bucket},
982 {"two-rules-in-one-table", 0, 0, test_two_rules_in_one_table},
983 {"two-rules-in-different-tables", 0, 0,
984 test_two_rules_in_different_tables},
985 {"many-rules-in-one-bucket", 0, 0, test_many_rules_in_one_bucket},
986 {"many-rules-in-one-table", 0, 0, test_many_rules_in_one_table},
987 {"many-rules-in-different-tables", 0, 0,
988 test_many_rules_in_different_tables},
993 main(int argc, char *argv[])
996 run_command(argc - 1, argv + 1, commands);