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app/test: verify more jhash functions

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Added new test that verifies that rte_jhash_1words,
rte_jhash_2words and rte_jhash_3words return the same
values as rte_jhash.

Note that this patch has been added after the update
of the jhash function because these 3 functions did not
return the same values as rte_jhash before

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
This commit is contained in:
Pablo de Lara 2015-06-10 16:25:27 +01:00 committed by Thomas Monjalon
parent 7530c9eea7
commit f3d9490098
1 changed files with 48 additions and 0 deletions
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48
app/test/test_hash_functions.c
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@ -239,6 +239,51 @@ verify_jhash_32bits(void)
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
*/
@ -251,6 +296,9 @@ run_hash_func_tests(void)
if (verify_jhash_32bits() != 0)
return -1;
if (verify_jhash_words() != 0)
return -1;
return 0;
}