+++ /dev/null
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stdio.h>
-#include <stdint.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <errno.h>
-#include <sys/queue.h>
-
-#include <rte_cycles.h>
-#include <rte_random.h>
-#include <rte_hash.h>
-#include <rte_jhash.h>
-#include <rte_hash_crc.h>
-
-#include "test.h"
-
-/*
- * Hash values calculated for key sizes from array "hashtest_key_lens"
- * and for initial values from array "hashtest_initvals.
- * Each key will be formed by increasing each byte by 1:
- * e.g.: key size = 4, key = 0x03020100
- * key size = 8, key = 0x0706050403020100
- */
-static uint32_t hash_values_jhash[2][12] = {{
- 0x8ba9414b, 0xdf0d39c9,
- 0xe4cf1d42, 0xd4ccb93c, 0x5e84eafc, 0x21362cfe,
- 0x2f4775ab, 0x9ff036cc, 0xeca51474, 0xbc9d6816,
- 0x12926a31, 0x1c9fa888
-},
-{
- 0x5c62c303, 0x1b8cf784,
- 0x8270ac65, 0x05fa6668, 0x762df861, 0xda088f2f,
- 0x59614cd4, 0x7a94f690, 0xdc1e4993, 0x30825494,
- 0x91d0e462, 0x768087fc
-}
-};
-static uint32_t hash_values_crc[2][12] = {{
- 0x00000000, 0xf26b8303,
- 0x91545164, 0x06040eb1, 0x9bb99201, 0xcc4c4fe4,
- 0x14a90993, 0xf8a5dd8c, 0xcaa1ad0b, 0x7ac1e03e,
- 0x43f44466, 0x4a11475e
-},
-{
- 0xbdfd3980, 0x70204542,
- 0x98cd4c70, 0xd52c702f, 0x41fc0e1c, 0x3905f65c,
- 0x94bff47f, 0x1bab102d, 0xf4a2c645, 0xbf441539,
- 0x789c104f, 0x53028d3e
-}
-};
-
-/*******************************************************************************
- * Hash function performance test configuration section. Each performance test
- * will be performed HASHTEST_ITERATIONS times.
- *
- * The three arrays below control what tests are performed. Every combination
- * from the array entries is tested.
- */
-#define HASHTEST_ITERATIONS 1000000
-#define MAX_KEYSIZE 64
-static rte_hash_function hashtest_funcs[] = {rte_jhash, rte_hash_crc};
-static uint32_t hashtest_initvals[] = {0, 0xdeadbeef};
-static uint32_t hashtest_key_lens[] = {
- 1, 2, /* Unusual key sizes */
- 4, 8, 16, 32, 48, 64, /* standard key sizes */
- 9, /* IPv4 SRC + DST + protocol, unpadded */
- 13, /* IPv4 5-tuple, unpadded */
- 37, /* IPv6 5-tuple, unpadded */
- 40 /* IPv6 5-tuple, padded to 8-byte boundary */
-};
-/******************************************************************************/
-
-/*
- * To help print out name of hash functions.
- */
-static const char *
-get_hash_name(rte_hash_function f)
-{
- if (f == rte_jhash)
- return "jhash";
-
- if (f == rte_hash_crc)
- return "rte_hash_crc";
-
- return "UnknownHash";
-}
-
-/*
- * Test a hash function.
- */
-static void
-run_hash_func_perf_test(uint32_t key_len, uint32_t init_val,
- rte_hash_function f)
-{
- static uint8_t key[HASHTEST_ITERATIONS][MAX_KEYSIZE];
- uint64_t ticks, start, end;
- unsigned i, j;
-
- for (i = 0; i < HASHTEST_ITERATIONS; i++) {
- for (j = 0; j < key_len; j++)
- key[i][j] = (uint8_t) rte_rand();
- }
-
- start = rte_rdtsc();
- for (i = 0; i < HASHTEST_ITERATIONS; i++)
- f(key[i], key_len, init_val);
- end = rte_rdtsc();
- ticks = end - start;
-
- printf("%-12s, %-18u, %-13u, %.02f\n", get_hash_name(f), (unsigned) key_len,
- (unsigned) init_val, (double)ticks / HASHTEST_ITERATIONS);
-}
-
-/*
- * Test all hash functions.
- */
-static void
-run_hash_func_perf_tests(void)
-{
- unsigned i, j, k;
-
- printf(" *** Hash function performance test results ***\n");
- printf(" Number of iterations for each test = %d\n",
- HASHTEST_ITERATIONS);
- printf("Hash Func. , Key Length (bytes), Initial value, Ticks/Op.\n");
-
- for (i = 0; i < RTE_DIM(hashtest_initvals); i++) {
- for (j = 0; j < RTE_DIM(hashtest_key_lens); j++) {
- for (k = 0; k < RTE_DIM(hashtest_funcs); k++) {
- run_hash_func_perf_test(hashtest_key_lens[j],
- hashtest_initvals[i],
- hashtest_funcs[k]);
- }
- }
- }
-}
-
-/*
- * Verify that hash functions return what they are expected to return
- * (using precalculated values stored above)
- */
-static int
-verify_precalculated_hash_func_tests(void)
-{
- unsigned i, j;
- uint8_t key[64];
- uint32_t hash;
-
- for (i = 0; i < 64; i++)
- key[i] = (uint8_t) i;
-
- for (i = 0; i < sizeof(hashtest_key_lens) / sizeof(uint32_t); i++) {
- for (j = 0; j < sizeof(hashtest_initvals) / sizeof(uint32_t); j++) {
- hash = rte_jhash(key, hashtest_key_lens[i],
- hashtest_initvals[j]);
- if (hash != hash_values_jhash[j][i]) {
- printf("jhash for %u bytes with initial value 0x%x."
- "Expected 0x%x, but got 0x%x\n",
- hashtest_key_lens[i], hashtest_initvals[j],
- hash_values_jhash[j][i], hash);
- return -1;
- }
-
- hash = rte_hash_crc(key, hashtest_key_lens[i],
- hashtest_initvals[j]);
- if (hash != hash_values_crc[j][i]) {
- printf("CRC for %u bytes with initial value 0x%x."
- "Expected 0x%x, but got 0x%x\n",
- hashtest_key_lens[i], hashtest_initvals[j],
- hash_values_crc[j][i], hash);
- return -1;
- }
- }
- }
-
- return 0;
-}
-
-/*
- * Verify that rte_jhash and rte_jhash_32b return the same
- */
-static int
-verify_jhash_32bits(void)
-{
- unsigned i, j;
- uint8_t key[64];
- uint32_t hash, hash32;
-
- for (i = 0; i < 64; i++)
- key[i] = rand() & 0xff;
-
- for (i = 0; i < sizeof(hashtest_key_lens) / sizeof(uint32_t); i++) {
- for (j = 0; j < sizeof(hashtest_initvals) / sizeof(uint32_t); j++) {
- /* Key size must be multiple of 4 (32 bits) */
- if ((hashtest_key_lens[i] & 0x3) == 0) {
- hash = rte_jhash(key, hashtest_key_lens[i],
- hashtest_initvals[j]);
- /* Divide key length by 4 in rte_jhash for 32 bits */
- hash32 = rte_jhash_32b((const unaligned_uint32_t *)key,
- hashtest_key_lens[i] >> 2,
- hashtest_initvals[j]);
- if (hash != hash32) {
- printf("rte_jhash returns different value (0x%x)"
- "than rte_jhash_32b (0x%x)\n",
- hash, hash32);
- return -1;
- }
- }
- }
- }
-
- return 0;
-}
-
-/*
- * Verify that rte_jhash and rte_jhash_1word, rte_jhash_2words
- * and rte_jhash_3words return the same
- */
-static int
-verify_jhash_words(void)
-{
- unsigned i;
- uint32_t key[3];
- uint32_t hash, hash_words;
-
- for (i = 0; i < 3; i++)
- key[i] = rand();
-
- /* Test rte_jhash_1word */
- hash = rte_jhash(key, 4, 0);
- hash_words = rte_jhash_1word(key[0], 0);
- if (hash != hash_words) {
- printf("rte_jhash returns different value (0x%x)"
- "than rte_jhash_1word (0x%x)\n",
- hash, hash_words);
- return -1;
- }
- /* Test rte_jhash_2words */
- hash = rte_jhash(key, 8, 0);
- hash_words = rte_jhash_2words(key[0], key[1], 0);
- if (hash != hash_words) {
- printf("rte_jhash returns different value (0x%x)"
- "than rte_jhash_2words (0x%x)\n",
- hash, hash_words);
- return -1;
- }
- /* Test rte_jhash_3words */
- hash = rte_jhash(key, 12, 0);
- hash_words = rte_jhash_3words(key[0], key[1], key[2], 0);
- if (hash != hash_words) {
- printf("rte_jhash returns different value (0x%x)"
- "than rte_jhash_3words (0x%x)\n",
- hash, hash_words);
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Run all functional tests for hash functions
- */
-static int
-run_hash_func_tests(void)
-{
- if (verify_precalculated_hash_func_tests() != 0)
- return -1;
-
- if (verify_jhash_32bits() != 0)
- return -1;
-
- if (verify_jhash_words() != 0)
- return -1;
-
- return 0;
-
-}
-
-static int
-test_hash_functions(void)
-{
- if (run_hash_func_tests() != 0)
- return -1;
-
- run_hash_func_perf_tests();
-
- return 0;
-}
-
-REGISTER_TEST_COMMAND(hash_functions_autotest, test_hash_functions);
Code Review / deb_dpdk.git / blobdiff