#include "byte-order.h"
#include "classifier-private.h"
#include "command-line.h"
+#include "fatal-signal.h"
#include "flow.h"
#include "ofp-util.h"
#include "ovstest.h"
+#include "ovs-atomic.h"
+#include "ovs-thread.h"
#include "packets.h"
#include "random.h"
+#include "timeval.h"
#include "unaligned.h"
#include "util.h"
static bool versioned = false;
/* Fields in a rule. */
-#define CLS_FIELDS \
- /* struct flow all-caps */ \
- /* member name name */ \
- /* ----------- -------- */ \
- CLS_FIELD(tunnel.tun_id, TUN_ID) \
- CLS_FIELD(metadata, METADATA) \
- CLS_FIELD(nw_src, NW_SRC) \
- CLS_FIELD(nw_dst, NW_DST) \
- CLS_FIELD(in_port, IN_PORT) \
- CLS_FIELD(vlan_tci, VLAN_TCI) \
- CLS_FIELD(dl_type, DL_TYPE) \
- CLS_FIELD(tp_src, TP_SRC) \
- CLS_FIELD(tp_dst, TP_DST) \
- CLS_FIELD(dl_src, DL_SRC) \
- CLS_FIELD(dl_dst, DL_DST) \
- CLS_FIELD(nw_proto, NW_PROTO) \
- CLS_FIELD(nw_tos, NW_DSCP)
+#define CLS_FIELDS \
+ /* struct flow all-caps */ \
+ /* member name name */ \
+ /* ----------- -------- */ \
+ CLS_FIELD(tunnel.tun_id, TUN_ID) \
+ CLS_FIELD(metadata, METADATA) \
+ CLS_FIELD(nw_src, NW_SRC) \
+ CLS_FIELD(nw_dst, NW_DST) \
+ CLS_FIELD(in_port.ofp_port, IN_PORT) \
+ CLS_FIELD(vlan_tci, VLAN_TCI) \
+ CLS_FIELD(dl_type, DL_TYPE) \
+ CLS_FIELD(tp_src, TP_SRC) \
+ CLS_FIELD(tp_dst, TP_DST) \
+ CLS_FIELD(dl_src, DL_SRC) \
+ CLS_FIELD(dl_dst, DL_DST) \
+ CLS_FIELD(nw_proto, NW_PROTO) \
+ CLS_FIELD(nw_tos, NW_DSCP)
/* Field indexes.
*
static ovs_be16 tp_src_values[] = { CONSTANT_HTONS(49362),
CONSTANT_HTONS(80) };
static ovs_be16 tp_dst_values[] = { CONSTANT_HTONS(6667), CONSTANT_HTONS(22) };
-static uint8_t dl_src_values[][ETH_ADDR_LEN] = {
- { 0x00, 0x02, 0xe3, 0x0f, 0x80, 0xa4 },
- { 0x5e, 0x33, 0x7f, 0x5f, 0x1e, 0x99 } };
-static uint8_t dl_dst_values[][ETH_ADDR_LEN] = {
- { 0x4a, 0x27, 0x71, 0xae, 0x64, 0xc1 },
- { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } };
+static struct eth_addr dl_src_values[] = {
+ { { { 0x00, 0x02, 0xe3, 0x0f, 0x80, 0xa4 } } },
+ { { { 0x5e, 0x33, 0x7f, 0x5f, 0x1e, 0x99 } } } };
+static struct eth_addr dl_dst_values[] = {
+ { { { 0x4a, 0x27, 0x71, 0xae, 0x64, 0xc1 } } },
+ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } } } };
static uint8_t nw_proto_values[] = { IPPROTO_TCP, IPPROTO_ICMP };
static uint8_t nw_dscp_values[] = { 48, 0 };
values[CLS_F_IDX_VLAN_TCI][0] = &vlan_tci_values[0];
values[CLS_F_IDX_VLAN_TCI][1] = &vlan_tci_values[1];
- values[CLS_F_IDX_DL_SRC][0] = dl_src_values[0];
- values[CLS_F_IDX_DL_SRC][1] = dl_src_values[1];
+ values[CLS_F_IDX_DL_SRC][0] = &dl_src_values[0];
+ values[CLS_F_IDX_DL_SRC][1] = &dl_src_values[1];
- values[CLS_F_IDX_DL_DST][0] = dl_dst_values[0];
- values[CLS_F_IDX_DL_DST][1] = dl_dst_values[1];
+ values[CLS_F_IDX_DL_DST][0] = &dl_dst_values[0];
+ values[CLS_F_IDX_DL_DST][1] = &dl_dst_values[1];
values[CLS_F_IDX_DL_TYPE][0] = &dl_type_values[0];
values[CLS_F_IDX_DL_TYPE][1] = &dl_type_values[1];
flow.dl_type = dl_type_values[get_value(&x, N_DL_TYPE_VALUES)];
flow.tp_src = tp_src_values[get_value(&x, N_TP_SRC_VALUES)];
flow.tp_dst = tp_dst_values[get_value(&x, N_TP_DST_VALUES)];
- memcpy(flow.dl_src, dl_src_values[get_value(&x, N_DL_SRC_VALUES)],
- ETH_ADDR_LEN);
- memcpy(flow.dl_dst, dl_dst_values[get_value(&x, N_DL_DST_VALUES)],
- ETH_ADDR_LEN);
+ flow.dl_src = dl_src_values[get_value(&x, N_DL_SRC_VALUES)];
+ flow.dl_dst = dl_dst_values[get_value(&x, N_DL_DST_VALUES)];
flow.nw_proto = nw_proto_values[get_value(&x, N_NW_PROTO_VALUES)];
flow.nw_tos = nw_dscp_values[get_value(&x, N_NW_DSCP_VALUES)];
} else if (f_idx == CLS_F_IDX_TP_DST) {
match.wc.masks.tp_dst = OVS_BE16_MAX;
} else if (f_idx == CLS_F_IDX_DL_SRC) {
- memset(match.wc.masks.dl_src, 0xff, ETH_ADDR_LEN);
+ WC_MASK_FIELD(&match.wc, dl_src);
} else if (f_idx == CLS_F_IDX_DL_DST) {
- memset(match.wc.masks.dl_dst, 0xff, ETH_ADDR_LEN);
+ WC_MASK_FIELD(&match.wc, dl_dst);
} else if (f_idx == CLS_F_IDX_VLAN_TCI) {
match.wc.masks.vlan_tci = OVS_BE16_MAX;
} else if (f_idx == CLS_F_IDX_TUN_ID) {
test_many_rules_in_n_tables(5);
}
\f
+/* Classifier benchmarks. */
+
+static int n_rules; /* Number of rules to insert. */
+static int n_priorities; /* Number of priorities to use. */
+static int n_tables; /* Number of subtables. */
+static int n_threads; /* Number of threads to search and mutate. */
+static int n_lookups; /* Number of lookups each thread performs. */
+
+static void benchmark(bool use_wc);
+
+static int
+elapsed(const struct timeval *start)
+{
+ struct timeval end;
+
+ xgettimeofday(&end);
+ return timeval_to_msec(&end) - timeval_to_msec(start);
+}
+
+static void
+run_benchmarks(struct ovs_cmdl_context *ctx)
+{
+ if (ctx->argc < 5
+ || (ctx->argc > 1 && !strcmp(ctx->argv[1], "--help"))) {
+ printf(
+ "usage: ovstest %s benchmark <n_rules> <n_priorities> <n_subtables> <n_threads> <n_lookups>\n"
+ "\n"
+ "where:\n"
+ "\n"
+ "<n_rules> - The number of rules to install for lookups. More rules\n"
+ " makes misses less likely.\n"
+ "<n_priorities> - How many different priorities to use. Using only 1\n"
+ " priority will force lookups to continue through all\n"
+ " subtables.\n"
+ "<n_subtables> - Number of subtables to use. Normally a classifier has\n"
+ " rules with different kinds of masks, resulting in\n"
+ " multiple subtables (one per mask). However, in some\n"
+ " special cases a table may consist of only one kind of\n"
+ " rules, so there will be only one subtable.\n"
+ "<n_threads> - How many lookup threads to use. Using one thread should\n"
+ " give less variance accross runs, but classifier\n"
+ " scaling can be tested with multiple threads.\n"
+ "<n_lookups> - How many lookups each thread should perform.\n"
+ "\n", program_name);
+ return;
+ }
+
+ n_rules = strtol(ctx->argv[1], NULL, 10);
+ n_priorities = strtol(ctx->argv[2], NULL, 10);
+ n_tables = strtol(ctx->argv[3], NULL, 10);
+ n_threads = strtol(ctx->argv[4], NULL, 10);
+ n_lookups = strtol(ctx->argv[5], NULL, 10);
+
+ printf("\nBenchmarking with:\n"
+ "%d rules with %d priorities in %d tables, "
+ "%d threads doing %d lookups each\n",
+ n_rules, n_priorities, n_tables, n_threads, n_lookups);
+
+ puts("\nWithout wildcards: \n");
+ benchmark(false);
+ puts("\nWith wildcards: \n");
+ benchmark(true);
+}
+
+struct cls_aux {
+ const struct classifier *cls;
+ size_t n_lookup_flows;
+ struct flow *lookup_flows;
+ bool use_wc;
+ atomic_int hits;
+ atomic_int misses;
+};
+
+static void *
+lookup_classifier(void *aux_)
+{
+ struct cls_aux *aux = aux_;
+ cls_version_t version = CLS_MIN_VERSION;
+ int hits = 0, old_hits;
+ int misses = 0, old_misses;
+ size_t i;
+
+ random_set_seed(1);
+
+ for (i = 0; i < n_lookups; i++) {
+ const struct cls_rule *cr;
+ struct flow_wildcards wc;
+ unsigned int x;
+
+ x = random_range(aux->n_lookup_flows);
+
+ if (aux->use_wc) {
+ flow_wildcards_init_catchall(&wc);
+ cr = classifier_lookup(aux->cls, version, &aux->lookup_flows[x],
+ &wc);
+ } else {
+ cr = classifier_lookup(aux->cls, version, &aux->lookup_flows[x],
+ NULL);
+ }
+ if (cr) {
+ hits++;
+ } else {
+ misses++;
+ }
+ }
+ atomic_add(&aux->hits, hits, &old_hits);
+ atomic_add(&aux->misses, misses, &old_misses);
+ return NULL;
+}
+
+/* Benchmark classification. */
+static void
+benchmark(bool use_wc)
+{
+ struct classifier cls;
+ cls_version_t version = CLS_MIN_VERSION;
+ struct cls_aux aux;
+ int *wcfs = xmalloc(n_tables * sizeof *wcfs);
+ int *priorities = xmalloc(n_priorities * sizeof *priorities);
+ struct timeval start;
+ pthread_t *threads;
+ int i;
+
+ fatal_signal_init();
+
+ random_set_seed(1);
+
+ for (i = 0; i < n_tables; i++) {
+ do {
+ wcfs[i] = random_uint32() & ((1u << CLS_N_FIELDS) - 1);
+ } while (array_contains(wcfs, i, wcfs[i]));
+ }
+
+ for (i = 0; i < n_priorities; i++) {
+ priorities[i] = (i * 129) & INT_MAX;
+ }
+ shuffle(priorities, n_priorities);
+
+ classifier_init(&cls, flow_segment_u64s);
+ set_prefix_fields(&cls);
+
+ /* Create lookup flows. */
+ aux.use_wc = use_wc;
+ aux.cls = &cls;
+ aux.n_lookup_flows = 2 * N_FLOW_VALUES;
+ aux.lookup_flows = xzalloc(aux.n_lookup_flows * sizeof *aux.lookup_flows);
+ for (i = 0; i < aux.n_lookup_flows; i++) {
+ struct flow *flow = &aux.lookup_flows[i];
+ unsigned int x;
+
+ x = random_range(N_FLOW_VALUES);
+ flow->nw_src = nw_src_values[get_value(&x, N_NW_SRC_VALUES)];
+ flow->nw_dst = nw_dst_values[get_value(&x, N_NW_DST_VALUES)];
+ flow->tunnel.tun_id = tun_id_values[get_value(&x, N_TUN_ID_VALUES)];
+ flow->metadata = metadata_values[get_value(&x, N_METADATA_VALUES)];
+ flow->in_port.ofp_port = in_port_values[get_value(&x,
+ N_IN_PORT_VALUES)];
+ flow->vlan_tci = vlan_tci_values[get_value(&x, N_VLAN_TCI_VALUES)];
+ flow->dl_type = dl_type_values[get_value(&x, N_DL_TYPE_VALUES)];
+ flow->tp_src = tp_src_values[get_value(&x, N_TP_SRC_VALUES)];
+ flow->tp_dst = tp_dst_values[get_value(&x, N_TP_DST_VALUES)];
+ flow->dl_src = dl_src_values[get_value(&x, N_DL_SRC_VALUES)];
+ flow->dl_dst = dl_dst_values[get_value(&x, N_DL_DST_VALUES)];
+ flow->nw_proto = nw_proto_values[get_value(&x, N_NW_PROTO_VALUES)];
+ flow->nw_tos = nw_dscp_values[get_value(&x, N_NW_DSCP_VALUES)];
+ }
+ atomic_init(&aux.hits, 0);
+ atomic_init(&aux.misses, 0);
+
+ /* Rule insertion. */
+ for (i = 0; i < n_rules; i++) {
+ struct test_rule *rule;
+ const struct cls_rule *old_cr;
+
+ int priority = priorities[random_range(n_priorities)];
+ int wcf = wcfs[random_range(n_tables)];
+ int value_pat = random_uint32() & ((1u << CLS_N_FIELDS) - 1);
+
+ rule = make_rule(wcf, priority, value_pat);
+ old_cr = classifier_find_rule_exactly(&cls, &rule->cls_rule, version);
+ if (!old_cr) {
+ classifier_insert(&cls, &rule->cls_rule, version, NULL, 0);
+ } else {
+ free_rule(rule);
+ }
+ }
+
+ /* Lookup. */
+ xgettimeofday(&start);
+ threads = xmalloc(n_threads * sizeof *threads);
+ for (i = 0; i < n_threads; i++) {
+ threads[i] = ovs_thread_create("lookups", lookup_classifier, &aux);
+ }
+ for (i = 0; i < n_threads; i++) {
+ xpthread_join(threads[i], NULL);
+ }
+
+ int elapsed_msec = elapsed(&start);
+
+ free(threads);
+
+ int hits, misses;
+ atomic_read(&aux.hits, &hits);
+ atomic_read(&aux.misses, &misses);
+ printf("hits: %d, misses: %d\n", hits, misses);
+
+ printf("classifier lookups: %5d ms, %"PRId64" lookups/sec\n",
+ elapsed_msec,
+ (((uint64_t)hits + misses) * 1000) / elapsed_msec);
+
+ destroy_classifier(&cls);
+ free(aux.lookup_flows);
+ free(priorities);
+ free(wcfs);
+}
+\f
/* Miniflow tests. */
static uint32_t
}
}
+/* Returns a copy of 'src'. The caller must eventually free the returned
+ * miniflow with free(). */
+static struct miniflow *
+miniflow_clone__(const struct miniflow *src)
+{
+ struct miniflow *dst;
+ size_t data_size;
+
+ data_size = miniflow_alloc(&dst, 1, src);
+ miniflow_clone(dst, src, data_size / sizeof(uint64_t));
+ return dst;
+}
+
+/* Returns a hash value for 'flow', given 'basis'. */
+static inline uint32_t
+miniflow_hash__(const struct miniflow *flow, uint32_t basis)
+{
+ const uint64_t *p = miniflow_get_values(flow);
+ size_t n_values = miniflow_n_values(flow);
+ struct flowmap hash_map = FLOWMAP_EMPTY_INITIALIZER;
+ uint32_t hash = basis;
+ size_t idx;
+
+ FLOWMAP_FOR_EACH_INDEX(idx, flow->map) {
+ uint64_t value = *p++;
+
+ if (value) {
+ hash = hash_add64(hash, value);
+ flowmap_set(&hash_map, idx, 1);
+ }
+ }
+ map_t map;
+ FLOWMAP_FOR_EACH_MAP (map, hash_map) {
+ hash = hash_add64(hash, map);
+ }
+
+ return hash_finish(hash, n_values);
+}
+
static void
test_miniflow(struct ovs_cmdl_context *ctx OVS_UNUSED)
{
assert(flow_equal(&flow, &flow2));
/* Check that copying a miniflow works properly. */
- miniflow2 = miniflow_clone(miniflow);
+ miniflow2 = miniflow_clone__(miniflow);
assert(miniflow_equal(miniflow, miniflow2));
- assert(miniflow_hash(miniflow, 0) == miniflow_hash(miniflow2, 0));
+ assert(miniflow_hash__(miniflow, 0) == miniflow_hash__(miniflow2, 0));
miniflow_expand(miniflow2, &flow3);
assert(flow_equal(&flow, &flow3));
assert(miniflow_equal_flow_in_minimask(miniflow, &flow2, minimask));
assert(miniflow_hash_in_minimask(miniflow, minimask, 0x12345678) ==
flow_hash_in_minimask(&flow, minimask, 0x12345678));
+ assert(minimask_hash(minimask, 0) ==
+ miniflow_hash__(&minimask->masks, 0));
/* Check that masked matches work as expected for differing flows and
* miniflows. */
free(minicatchall);
}
\f
+
+static void help(struct ovs_cmdl_context *ctx);
+
static const struct ovs_cmdl_command commands[] = {
/* Classifier tests. */
{"empty", NULL, 0, 0, test_empty},
{"many-rules-in-one-table", NULL, 0, 1, test_many_rules_in_one_table},
{"many-rules-in-two-tables", NULL, 0, 0, test_many_rules_in_two_tables},
{"many-rules-in-five-tables", NULL, 0, 0, test_many_rules_in_five_tables},
+ {"benchmark", NULL, 0, 5, run_benchmarks},
/* Miniflow and minimask tests. */
{"miniflow", NULL, 0, 0, test_miniflow},
{"minimask_has_extra", NULL, 0, 0, test_minimask_has_extra},
{"minimask_combine", NULL, 0, 0, test_minimask_combine},
+ {"--help", NULL, 0, 0, help},
{NULL, NULL, 0, 0, NULL},
};
+static void
+help(struct ovs_cmdl_context *ctx OVS_UNUSED)
+{
+ const struct ovs_cmdl_command *p;
+ struct ds test_names = DS_EMPTY_INITIALIZER;
+ const int linesize = 80;
+
+ printf("usage: ovstest %s TEST [TESTARGS]\n"
+ "where TEST is one of the following:\n\n",
+ program_name);
+
+ for (p = commands; p->name != NULL; p++) {
+ if (*p->name != '-') { /* Skip internal commands */
+ if (test_names.length > 1
+ && test_names.length + strlen(p->name) + 1 >= linesize) {
+ test_names.length -= 1;
+ printf ("%s\n", ds_cstr(&test_names));
+ ds_clear(&test_names);
+ }
+ ds_put_format(&test_names, "%s, ", p->name);
+ }
+ }
+ if (test_names.length > 2) {
+ test_names.length -= 2;
+ printf("%s\n", ds_cstr(&test_names));
+ }
+ ds_destroy(&test_names);
+}
+
static void
test_classifier_main(int argc, char *argv[])
{
projects / cascardo / ovs.git / blobdiff