Adds tests comparing the results of applying the output
of rte_thash_get_complement() to the tuple with the result
of calling rte_thash_adjust_tuple().
Suggested-by: Konstantin Ananyev <konstantin.v.anan...@yandex.ru>
Signed-off-by: Konstantin Ananyev <konstantin.v.anan...@yandex.ru>
Signed-off-by: Vladimir Medvedkin <vladimir.medved...@intel.com>
---
app/test/test_thash.c | 132 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 132 insertions(+)
diff --git a/app/test/test_thash.c b/app/test/test_thash.c
index 62ba4a9528..53d9611e18 100644
--- a/app/test/test_thash.c
+++ b/app/test/test_thash.c
@@ -804,6 +804,137 @@ test_adjust_tuple(void)
return TEST_SUCCESS;
}
+static uint32_t
+calc_tuple_hash(const uint8_t tuple[TUPLE_SZ], const uint8_t *key)
+{
+ uint32_t i, hash;
+ uint32_t tmp[TUPLE_SZ / sizeof(uint32_t)];
+
+ for (i = 0; i < RTE_DIM(tmp); i++)
+ tmp[i] = rte_be_to_cpu_32(
+ *(const uint32_t *)&tuple[i * sizeof(uint32_t)]);
+
+ hash = rte_softrss(tmp, RTE_DIM(tmp), key);
+ return hash;
+}
+
+static int
+check_adj_tuple(const uint8_t tuple[TUPLE_SZ], const uint8_t *key,
+ uint32_t dhv, uint32_t ohv, uint32_t adjust, uint32_t reta_sz,
+ const char *prefix)
+{
+ uint32_t hash, hashlsb;
+
+ hash = calc_tuple_hash(tuple, key);
+ hashlsb = hash & HASH_MSK(reta_sz);
+
+ printf("%s(%s) for tuple:\n", __func__, prefix);
+ rte_memdump(stdout, NULL, tuple, TUPLE_SZ);
+ printf("\treta_sz: %u,\n"
+ "\torig hash: %#x,\n"
+ "\tdesired: %#x,\n"
+ "\tadjust: %#x,\n"
+ "\tactual: %#x,\n",
+ reta_sz, ohv, dhv, adjust, hashlsb);
+
+ if (dhv == hashlsb) {
+ printf("\t***Succeeded\n");
+ return 0;
+ }
+
+ printf("\t***Failed\n");
+ return -1;
+}
+
+static int
+test_adjust_tuple_mb(uint32_t reta_sz, uint32_t bofs)
+{
+ struct rte_thash_ctx *ctx;
+ struct rte_thash_subtuple_helper *h;
+ const int key_len = 40;
+ const uint8_t *new_key;
+ uint8_t orig_tuple[TUPLE_SZ];
+ uint8_t tuple_1[TUPLE_SZ];
+ uint8_t tuple_2[TUPLE_SZ];
+ uint32_t orig_hash;
+ int rc, ret;
+ uint32_t adj_bits;
+ unsigned int random = rte_rand();
+ unsigned int desired_value = random & HASH_MSK(reta_sz);
+
+ const uint32_t h_offset = offsetof(union rte_thash_tuple, v4.dport) *
CHAR_BIT;
+ const uint32_t h_size = sizeof(uint16_t) * CHAR_BIT - bofs;
+
+ printf("===%s(reta_sz=%u,bofs=%u)===\n", __func__, reta_sz, bofs);
+
+ memset(orig_tuple, 0xab, sizeof(orig_tuple));
+
+ ctx = rte_thash_init_ctx("test", key_len, reta_sz, NULL, 0);
+ RTE_TEST_ASSERT(ctx != NULL, "can not create thash ctx\n");
+
+ ret = rte_thash_add_helper(ctx, "test", h_size, h_offset);
+ RTE_TEST_ASSERT(ret == 0, "can not add helper, ret %d\n", ret);
+
+ new_key = rte_thash_get_key(ctx);
+
+ h = rte_thash_get_helper(ctx, "test");
+
+ orig_hash = calc_tuple_hash(orig_tuple, new_key);
+
+ adj_bits = rte_thash_get_complement(h, orig_hash, desired_value);
+
+ /* use method #1, update tuple manually */
+ memcpy(tuple_1, orig_tuple, sizeof(tuple_1));
+ {
+ uint16_t nv, ov, *p;
+
+ p = (uint16_t *)(tuple_1 + h_offset / CHAR_BIT);
+ ov = p[0];
+ nv = ov ^ rte_cpu_to_be_16(adj_bits << bofs);
+ printf("%s#%d: ov=%#hx, nv=%#hx, adj=%#x;\n",
+ __func__, __LINE__, ov, nv, adj_bits);
+ p[0] = nv;
+ }
+
+ rc = check_adj_tuple(tuple_1, new_key, desired_value, orig_hash,
+ adj_bits, reta_sz, "method #1");
+ if (h_offset % CHAR_BIT == 0)
+ ret |= rc;
+
+ /* use method #2, use library function to adjust tuple */
+ memcpy(tuple_2, orig_tuple, sizeof(tuple_2));
+
+ rte_thash_adjust_tuple(ctx, h, tuple_2, sizeof(tuple_2),
+ desired_value, 1, NULL, NULL);
+ ret |= check_adj_tuple(tuple_2, new_key, desired_value, orig_hash,
+ adj_bits, reta_sz, "method #2");
+
+ rte_thash_free_ctx(ctx);
+
+ ret |= memcmp(tuple_1, tuple_2, sizeof(tuple_1));
+
+ printf("%s EXIT=======\n", __func__);
+ return ret;
+}
+
+static int
+test_adjust_tuple_mult_reta(void)
+{
+ uint32_t i, j, np, nt;
+
+ nt = 0, np = 0;
+ for (i = 0; i < CHAR_BIT; i++) {
+ for (j = 6; j <= RTE_THASH_RETA_SZ_MAX - i; j++) {
+ np += (test_adjust_tuple_mb(j, i) == 0);
+ nt++;
+ }
+ }
+
+ printf("%s: tests executed: %u, test passed: %u\n", __func__, nt, np);
+ RTE_TEST_ASSERT(nt == np, "%u subtests failed", nt - np);
+ return TEST_SUCCESS;
+}
+
static struct unit_test_suite thash_tests = {
.suite_name = "thash autotest",
.setup = NULL,
@@ -824,6 +955,7 @@ static struct unit_test_suite thash_tests = {
TEST_CASE(test_predictable_rss_min_seq),
TEST_CASE(test_predictable_rss_multirange),
TEST_CASE(test_adjust_tuple),
+ TEST_CASE(test_adjust_tuple_mult_reta),
TEST_CASES_END()
}
};
--
2.25.1
