int
onvm_ft_lookup_key(struct onvm_ft* table, struct onvm_ft_ipv4_5tuple *key, char** data) {
int32_t tbl_index;
uint32_t softrss;
softrss = onvm_softrss(key);
tbl_index = rte_hash_lookup_with_hash(table->hash, (const void *)key, softrss);
if (tbl_index >= 0) {
*data = onvm_ft_get_data(table, tbl_index);
}
return tbl_index;
}
/* Lookup an entry in flow table and set data to point to the value.
Returns:
index in the array on success
-ENOENT if the key is not found.
-EINVAL if the parameters are invalid.
*/
int
onvm_ft_lookup_pkt(struct onvm_ft* table, struct rte_mbuf *pkt, char** data) {
int32_t tbl_index;
struct onvm_ft_ipv4_5tuple key;
int ret;
ret = onvm_ft_fill_key(&key, pkt);
if (ret < 0) {
return ret;
}
tbl_index = rte_hash_lookup_with_hash(table->hash, (const void *)&key, pkt->hash.rss);
if (tbl_index >= 0) {
*data = onvm_ft_get_data(table, tbl_index);
}
return tbl_index;
}
static int
timed_lookups(unsigned with_hash, unsigned with_data, unsigned table_index)
{
unsigned i, j;
const uint64_t start_tsc = rte_rdtsc();
void *ret_data;
void *expected_data;
int32_t ret;
for (i = 0; i < NUM_LOOKUPS/KEYS_TO_ADD; i++) {
for (j = 0; j < KEYS_TO_ADD; j++) {
if (with_hash && with_data) {
ret = rte_hash_lookup_with_hash_data(h[table_index],
(const void *) keys[j],
signatures[j], &ret_data);
if (ret < 0) {
printf("Key number %u was not found\n", j);
return -1;
}
expected_data = (void *) ((uintptr_t) signatures[j]);
if (ret_data != expected_data) {
printf("Data returned for key number %u is %p,"
" but should be %p\n", j, ret_data,
expected_data);
return -1;
}
} else if (with_hash && !with_data) {
ret = rte_hash_lookup_with_hash(h[table_index],
(const void *) keys[j],
signatures[j]);
if (ret < 0 || ret != positions[j]) {
printf("Key looked up in %d, should be in %d\n",
ret, positions[j]);
return -1;
}
} else if (!with_hash && with_data) {
ret = rte_hash_lookup_data(h[table_index],
(const void *) keys[j], &ret_data);
if (ret < 0) {
printf("Key number %u was not found\n", j);
return -1;
}
expected_data = (void *) ((uintptr_t) signatures[j]);
if (ret_data != expected_data) {
printf("Data returned for key number %u is %p,"
" but should be %p\n", j, ret_data,
expected_data);
return -1;
}
} else {
ret = rte_hash_lookup(h[table_index], keys[j]);
if (ret < 0 || ret != positions[j]) {
printf("Key looked up in %d, should be in %d\n",
ret, positions[j]);
return -1;
}
}
}
}
const uint64_t end_tsc = rte_rdtsc();
const uint64_t time_taken = end_tsc - start_tsc;
cycles[table_index][LOOKUP][with_hash][with_data] = time_taken/NUM_LOOKUPS;
return 0;
}
