uint8_t slot_taken[MAX_ENTRIES];
/* Array to store number of cycles per operation */
-uint64_t cycles[NUM_KEYSIZES][NUM_OPERATIONS][2];
+uint64_t cycles[NUM_KEYSIZES][NUM_OPERATIONS][2][2];
/* Array to store all input keys */
uint8_t keys[KEYS_TO_ADD][MAX_KEYSIZE];
};
static int
-create_table(unsigned table_index)
+create_table(unsigned with_data, unsigned table_index)
{
char name[RTE_HASH_NAMESIZE];
- sprintf(name, "test_hash%d", hashtest_key_lens[table_index]);
+ if (with_data)
+ /* Table will store 8-byte data */
+ sprintf(name, "test_hash%d_data", hashtest_key_lens[table_index]);
+ else
+ sprintf(name, "test_hash%d", hashtest_key_lens[table_index]);
+
ut_params.name = name;
ut_params.key_len = hashtest_key_lens[table_index];
ut_params.socket_id = rte_socket_id();
else {
/* Store the returned position and mark slot as taken */
slot_taken[ret] = 1;
+ positions[i] = ret;
buckets[bucket_idx]++;
success = 1;
i++;
}
static int
-timed_adds(unsigned with_hash, unsigned table_index)
+timed_adds(unsigned with_hash, unsigned with_data, unsigned table_index)
{
unsigned i;
const uint64_t start_tsc = rte_rdtsc();
+ void *data;
int32_t ret;
for (i = 0; i < KEYS_TO_ADD; i++) {
- if (with_hash)
+ data = (void *) ((uintptr_t) signatures[i]);
+ if (with_hash && with_data) {
+ ret = rte_hash_add_key_with_hash_data(h[table_index],
+ (const void *) keys[i],
+ signatures[i], data);
+ if (ret < 0) {
+ printf("Failed to add key number %u\n", ret);
+ return -1;
+ }
+ } else if (with_hash && !with_data) {
ret = rte_hash_add_key_with_hash(h[table_index],
(const void *) keys[i],
signatures[i]);
- else
+ if (ret >= 0)
+ positions[i] = ret;
+ else {
+ printf("Failed to add key number %u\n", ret);
+ return -1;
+ }
+ } else if (!with_hash && with_data) {
+ ret = rte_hash_add_key_data(h[table_index],
+ (const void *) keys[i],
+ data);
+ if (ret < 0) {
+ printf("Failed to add key number %u\n", ret);
+ return -1;
+ }
+ } else {
ret = rte_hash_add_key(h[table_index], keys[i]);
-
- if (ret >= 0)
- positions[i] = ret;
- else {
- printf("Failed to add key number %u\n", ret);
- return -1;
+ if (ret >= 0)
+ positions[i] = ret;
+ else {
+ printf("Failed to add key number %u\n", ret);
+ return -1;
+ }
}
}
const uint64_t end_tsc = rte_rdtsc();
const uint64_t time_taken = end_tsc - start_tsc;
- cycles[table_index][ADD][with_hash] = time_taken/KEYS_TO_ADD;
+ cycles[table_index][ADD][with_hash][with_data] = time_taken/KEYS_TO_ADD;
+
return 0;
}
static int
-timed_lookups(unsigned with_hash, unsigned table_index)
+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)
+ 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]);
- else
+ 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;
+ 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] = time_taken/NUM_LOOKUPS;
+ cycles[table_index][LOOKUP][with_hash][with_data] = time_taken/NUM_LOOKUPS;
return 0;
}
static int
-timed_lookups_multi(unsigned table_index)
+timed_lookups_multi(unsigned with_data, unsigned table_index)
{
unsigned i, j, k;
int32_t positions_burst[BURST_SIZE];
const void *keys_burst[BURST_SIZE];
+ void *expected_data[BURST_SIZE];
+ void *ret_data[BURST_SIZE];
+ uint64_t hit_mask;
+ int ret;
+
const uint64_t start_tsc = rte_rdtsc();
for (i = 0; i < NUM_LOOKUPS/KEYS_TO_ADD; i++) {
for (j = 0; j < KEYS_TO_ADD/BURST_SIZE; j++) {
for (k = 0; k < BURST_SIZE; k++)
keys_burst[k] = keys[j * BURST_SIZE + k];
-
- rte_hash_lookup_bulk(h[table_index],
+ if (with_data) {
+ ret = rte_hash_lookup_bulk_data(h[table_index],
+ (const void **) keys_burst,
+ BURST_SIZE,
+ &hit_mask,
+ ret_data);
+ if (ret != BURST_SIZE) {
+ printf("Expect to find %u keys,"
+ " but found %d\n", BURST_SIZE, ret);
+ return -1;
+ }
+ for (k = 0; k < BURST_SIZE; k++) {
+ if ((hit_mask & (1ULL << k)) == 0) {
+ printf("Key number %u not found\n",
+ j * BURST_SIZE + k);
+ return -1;
+ }
+ expected_data[k] = (void *) ((uintptr_t) signatures[j * BURST_SIZE + k]);
+ if (ret_data[k] != expected_data[k]) {
+ printf("Data returned for key number %u is %p,"
+ " but should be %p\n", j * BURST_SIZE + k,
+ ret_data[k], expected_data[k]);
+ return -1;
+ }
+ }
+ } else {
+ rte_hash_lookup_bulk(h[table_index],
(const void **) keys_burst,
BURST_SIZE,
positions_burst);
- for (k = 0; k < BURST_SIZE; k++) {
- if (positions_burst[k] != positions[j * BURST_SIZE + k]) {
- printf("Key looked up in %d, should be in %d\n",
- positions_burst[k],
- positions[j * BURST_SIZE + k]);
- return -1;
+ for (k = 0; k < BURST_SIZE; k++) {
+ if (positions_burst[k] != positions[j * BURST_SIZE + k]) {
+ printf("Key looked up in %d, should be in %d\n",
+ positions_burst[k],
+ positions[j * BURST_SIZE + k]);
+ return -1;
+ }
}
}
}
const uint64_t end_tsc = rte_rdtsc();
const uint64_t time_taken = end_tsc - start_tsc;
- cycles[table_index][LOOKUP_MULTI][0] = time_taken/NUM_LOOKUPS;
+ cycles[table_index][LOOKUP_MULTI][0][with_data] = time_taken/NUM_LOOKUPS;
return 0;
}
static int
-timed_deletes(unsigned with_hash, unsigned table_index)
+timed_deletes(unsigned with_hash, unsigned with_data, unsigned table_index)
{
unsigned i;
const uint64_t start_tsc = rte_rdtsc();
int32_t ret;
for (i = 0; i < KEYS_TO_ADD; i++) {
+ /* There are no delete functions with data, so just call two functions */
if (with_hash)
ret = rte_hash_del_key_with_hash(h[table_index],
(const void *) keys[i],
const uint64_t end_tsc = rte_rdtsc();
const uint64_t time_taken = end_tsc - start_tsc;
- cycles[table_index][DELETE][with_hash] = time_taken/KEYS_TO_ADD;
+ cycles[table_index][DELETE][with_hash][with_data] = time_taken/KEYS_TO_ADD;
return 0;
}
static int
run_all_tbl_perf_tests(unsigned with_pushes)
{
- unsigned i, j, with_hash;
+ unsigned i, j, with_data, with_hash;
printf("Measuring performance, please wait");
fflush(stdout);
- for (i = 0; i < NUM_KEYSIZES; i++) {
- if (create_table(i) < 0)
- return -1;
- if (get_input_keys(with_pushes, i) < 0)
- return -1;
- for (with_hash = 0; with_hash <= 1; with_hash++) {
- if (timed_adds(with_hash, i) < 0)
+ for (with_data = 0; with_data <= 1; with_data++) {
+ for (i = 0; i < NUM_KEYSIZES; i++) {
+ if (create_table(with_data, i) < 0)
return -1;
- for (j = 0; j < NUM_SHUFFLES; j++)
- shuffle_input_keys(i);
-
- if (timed_lookups(with_hash, i) < 0)
+ if (get_input_keys(with_pushes, i) < 0)
return -1;
+ for (with_hash = 0; with_hash <= 1; with_hash++) {
+ if (timed_adds(with_hash, with_data, i) < 0)
+ return -1;
- if (timed_lookups_multi(i) < 0)
- return -1;
+ for (j = 0; j < NUM_SHUFFLES; j++)
+ shuffle_input_keys(i);
- if (timed_deletes(with_hash, i) < 0)
- return -1;
+ if (timed_lookups(with_hash, with_data, i) < 0)
+ return -1;
- reset_table(i);
+ if (timed_lookups_multi(with_data, i) < 0)
+ return -1;
- /* Print a dot to show progress on operations */
- printf(".");
- fflush(stdout);
- }
+ if (timed_deletes(with_hash, with_data, i) < 0)
+ return -1;
- free_table(i);
+ /* Print a dot to show progress on operations */
+ printf(".");
+ fflush(stdout);
+
+ reset_table(i);
+ }
+ free_table(i);
+ }
}
+
printf("\nResults (in CPU cycles/operation)\n");
- printf("---------------------------------\n");
- printf("\nWithout pre-computed hash values\n");
- printf("\n%-18s%-18s%-18s%-18s%-18s\n",
- "Keysize", "Add", "Lookup", "Lookup_bulk", "Delete");
- for (i = 0; i < NUM_KEYSIZES; i++) {
- printf("%-18d", hashtest_key_lens[i]);
- for (j = 0; j < NUM_OPERATIONS; j++)
- printf("%-18"PRIu64, cycles[i][j][0]);
- printf("\n");
- }
- printf("\nWith pre-computed hash values\n");
- printf("\n%-18s%-18s%-18s%-18s%-18s\n",
+ printf("-----------------------------------\n");
+ for (with_data = 0; with_data <= 1; with_data++) {
+ if (with_data)
+ printf("\n Operations with 8-byte data\n");
+ else
+ printf("\n Operations without data\n");
+ for (with_hash = 0; with_hash <= 1; with_hash++) {
+ if (with_hash)
+ printf("\nWith pre-computed hash values\n");
+ else
+ printf("\nWithout pre-computed hash values\n");
+
+ printf("\n%-18s%-18s%-18s%-18s%-18s\n",
"Keysize", "Add", "Lookup", "Lookup_bulk", "Delete");
- for (i = 0; i < NUM_KEYSIZES; i++) {
- printf("%-18d", hashtest_key_lens[i]);
- for (j = 0; j < NUM_OPERATIONS; j++)
- printf("%-18"PRIu64, cycles[i][j][1]);
- printf("\n");
+ for (i = 0; i < NUM_KEYSIZES; i++) {
+ printf("%-18d", hashtest_key_lens[i]);
+ for (j = 0; j < NUM_OPERATIONS; j++)
+ printf("%-18"PRIu64, cycles[i][j][with_hash][with_data]);
+ printf("\n");
+ }
+ }
}
-
return 0;
}
if (run_all_tbl_perf_tests(with_pushes) < 0)
return -1;
}
-
if (fbk_hash_perf_test() < 0)
return -1;
#include <rte_rwlock.h>
#include <rte_spinlock.h>
#include <rte_ring.h>
+#include <rte_compat.h>
#include "rte_hash.h"
#define NULL_SIGNATURE 0
+#define KEY_ALIGNMENT 16
+
typedef int (*rte_hash_cmp_eq_t)(const void *key1, const void *key2, size_t key_len);
static int rte_hash_k16_cmp_eq(const void *key1, const void *key2, size_t key_len);
static int rte_hash_k32_cmp_eq(const void *key1, const void *key2, size_t key_len);
};
};
+/* Structure that stores key-value pair */
+struct rte_hash_key {
+ union {
+ uintptr_t idata;
+ void *pdata;
+ };
+ /* Variable key size */
+ char key[];
+} __attribute__((aligned(KEY_ALIGNMENT)));
+
/** Bucket structure */
struct rte_hash_bucket {
struct rte_hash_signatures signatures[RTE_HASH_BUCKET_ENTRIES];
goto err;
}
- const uint32_t key_entry_size = params->key_len;
+ const uint32_t key_entry_size = sizeof(struct rte_hash_key) + params->key_len;
+
/* Store all keys and leave the first entry as a dummy entry for lookup_bulk */
const uint64_t key_tbl_size = key_entry_size * (params->entries + 1);
static inline int32_t
__rte_hash_add_key_with_hash(const struct rte_hash *h, const void *key,
- hash_sig_t sig)
+ hash_sig_t sig, void *data)
{
hash_sig_t alt_hash;
uint32_t prim_bucket_idx, sec_bucket_idx;
unsigned i;
struct rte_hash_bucket *prim_bkt, *sec_bkt;
- void *new_k, *k, *keys = h->key_store;
+ struct rte_hash_key *new_k, *k, *keys = h->key_store;
void *slot_id;
uint32_t new_idx;
int ret;
for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
if (prim_bkt->signatures[i].current == sig &&
prim_bkt->signatures[i].alt == alt_hash) {
- k = (char *)keys + prim_bkt->key_idx[i] * h->key_entry_size;
- if (h->rte_hash_cmp_eq(key, k, h->key_len) == 0) {
+ k = (struct rte_hash_key *) ((char *)keys +
+ prim_bkt->key_idx[i] * h->key_entry_size);
+ if (h->rte_hash_cmp_eq(key, k->key, h->key_len) == 0) {
rte_ring_sp_enqueue(h->free_slots, &slot_id);
+ /* Update data */
+ k->pdata = data;
/*
* Return index where key is stored,
* substracting the first dummy index
for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
if (sec_bkt->signatures[i].alt == sig &&
sec_bkt->signatures[i].current == alt_hash) {
- k = (char *)keys + sec_bkt->key_idx[i] * h->key_entry_size;
- if (h->rte_hash_cmp_eq(key, k, h->key_len) == 0) {
+ k = (struct rte_hash_key *) ((char *)keys +
+ sec_bkt->key_idx[i] * h->key_entry_size);
+ if (h->rte_hash_cmp_eq(key, k->key, h->key_len) == 0) {
rte_ring_sp_enqueue(h->free_slots, &slot_id);
+ /* Update data */
+ k->pdata = data;
/*
* Return index where key is stored,
* substracting the first dummy index
}
/* Copy key */
- rte_memcpy(new_k, key, h->key_len);
+ rte_memcpy(new_k->key, key, h->key_len);
+ new_k->pdata = data;
/* Insert new entry is there is room in the primary bucket */
for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
const void *key, hash_sig_t sig)
{
RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
- return __rte_hash_add_key_with_hash(h, key, sig);
+ return __rte_hash_add_key_with_hash(h, key, sig, 0);
}
int32_t
rte_hash_add_key(const struct rte_hash *h, const void *key)
{
RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
- return __rte_hash_add_key_with_hash(h, key, rte_hash_hash(h, key));
+ return __rte_hash_add_key_with_hash(h, key, rte_hash_hash(h, key), 0);
+}
+
+int
+rte_hash_add_key_with_hash_data(const struct rte_hash *h,
+ const void *key, hash_sig_t sig, void *data)
+{
+ int ret;
+
+ RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+ ret = __rte_hash_add_key_with_hash(h, key, sig, data);
+ if (ret >= 0)
+ return 0;
+ else
+ return ret;
}
+int
+rte_hash_add_key_data(const struct rte_hash *h, const void *key, void *data)
+{
+ int ret;
+
+ RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+
+ ret = __rte_hash_add_key_with_hash(h, key, rte_hash_hash(h, key), data);
+ if (ret >= 0)
+ return 0;
+ else
+ return ret;
+}
static inline int32_t
__rte_hash_lookup_with_hash(const struct rte_hash *h, const void *key,
- hash_sig_t sig)
+ hash_sig_t sig, void **data)
{
uint32_t bucket_idx;
hash_sig_t alt_hash;
unsigned i;
struct rte_hash_bucket *bkt;
- void *k, *keys = h->key_store;
+ struct rte_hash_key *k, *keys = h->key_store;
bucket_idx = sig & h->bucket_bitmask;
bkt = &h->buckets[bucket_idx];
for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
if (bkt->signatures[i].current == sig &&
bkt->signatures[i].sig != NULL_SIGNATURE) {
- k = (char *)keys + bkt->key_idx[i] * h->key_entry_size;
- if (h->rte_hash_cmp_eq(key, k, h->key_len) == 0)
+ k = (struct rte_hash_key *) ((char *)keys +
+ bkt->key_idx[i] * h->key_entry_size);
+ if (h->rte_hash_cmp_eq(key, k->key, h->key_len) == 0) {
+ if (data != NULL)
+ *data = k->pdata;
/*
* Return index where key is stored,
* substracting the first dummy index
*/
return (bkt->key_idx[i] - 1);
+ }
}
}
for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
if (bkt->signatures[i].current == alt_hash &&
bkt->signatures[i].alt == sig) {
- k = (char *)keys + bkt->key_idx[i] * h->key_entry_size;
- if (h->rte_hash_cmp_eq(key, k, h->key_len) == 0)
+ k = (struct rte_hash_key *) ((char *)keys +
+ bkt->key_idx[i] * h->key_entry_size);
+ if (h->rte_hash_cmp_eq(key, k->key, h->key_len) == 0) {
+ if (data != NULL)
+ *data = k->pdata;
/*
* Return index where key is stored,
* substracting the first dummy index
*/
return (bkt->key_idx[i] - 1);
+ }
}
}
const void *key, hash_sig_t sig)
{
RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
- return __rte_hash_lookup_with_hash(h, key, sig);
+ return __rte_hash_lookup_with_hash(h, key, sig, NULL);
}
int32_t
rte_hash_lookup(const struct rte_hash *h, const void *key)
{
RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
- return __rte_hash_lookup_with_hash(h, key, rte_hash_hash(h, key));
+ return __rte_hash_lookup_with_hash(h, key, rte_hash_hash(h, key), NULL);
+}
+
+int
+rte_hash_lookup_with_hash_data(const struct rte_hash *h,
+ const void *key, hash_sig_t sig, void **data)
+{
+ RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+ return __rte_hash_lookup_with_hash(h, key, sig, data);
+}
+
+int
+rte_hash_lookup_data(const struct rte_hash *h, const void *key, void **data)
+{
+ RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+ return __rte_hash_lookup_with_hash(h, key, rte_hash_hash(h, key), data);
}
static inline int32_t
hash_sig_t alt_hash;
unsigned i;
struct rte_hash_bucket *bkt;
- void *k, *keys = h->key_store;
+ struct rte_hash_key *k, *keys = h->key_store;
bucket_idx = sig & h->bucket_bitmask;
bkt = &h->buckets[bucket_idx];
for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
if (bkt->signatures[i].current == sig &&
bkt->signatures[i].sig != NULL_SIGNATURE) {
- k = (char *)keys + bkt->key_idx[i] * h->key_entry_size;
- if (h->rte_hash_cmp_eq(key, k, h->key_len) == 0) {
+ k = (struct rte_hash_key *) ((char *)keys +
+ bkt->key_idx[i] * h->key_entry_size);
+ if (h->rte_hash_cmp_eq(key, k->key, h->key_len) == 0) {
bkt->signatures[i].sig = NULL_SIGNATURE;
rte_ring_sp_enqueue(h->free_slots,
(void *)((uintptr_t)bkt->key_idx[i]));
for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
if (bkt->signatures[i].current == alt_hash &&
bkt->signatures[i].sig != NULL_SIGNATURE) {
- k = (char *)keys + bkt->key_idx[i] * h->key_entry_size;
- if (h->rte_hash_cmp_eq(key, k, h->key_len) == 0) {
+ k = (struct rte_hash_key *) ((char *)keys +
+ bkt->key_idx[i] * h->key_entry_size);
+ if (h->rte_hash_cmp_eq(key, k->key, h->key_len) == 0) {
bkt->signatures[i].sig = NULL_SIGNATURE;
rte_ring_sp_enqueue(h->free_slots,
(void *)((uintptr_t)bkt->key_idx[i]));
lookup_stage2(unsigned idx, hash_sig_t prim_hash, hash_sig_t sec_hash,
const struct rte_hash_bucket *prim_bkt,
const struct rte_hash_bucket *sec_bkt,
- const void **key_slot, int32_t *positions,
+ const struct rte_hash_key **key_slot, int32_t *positions,
uint64_t *extra_hits_mask, const void *keys,
const struct rte_hash *h)
{
total_hash_matches = (prim_hash_matches |
(sec_hash_matches << (RTE_HASH_BUCKET_ENTRIES + 1)));
- *key_slot = (const char *)keys + key_idx * h->key_entry_size;
+ *key_slot = (const struct rte_hash_key *) ((const char *)keys +
+ key_idx * h->key_entry_size);
rte_prefetch0(*key_slot);
/*
}
-/* Lookup bulk stage 3: Check if key matches, update hit mask */
+/* Lookup bulk stage 3: Check if key matches, update hit mask and return data */
static inline void
-lookup_stage3(unsigned idx, const void *key_slot, const void * const *keys,
- uint64_t *hits, const struct rte_hash *h)
+lookup_stage3(unsigned idx, const struct rte_hash_key *key_slot, const void * const *keys,
+ void *data[], uint64_t *hits, const struct rte_hash *h)
{
unsigned hit;
- hit = !h->rte_hash_cmp_eq(key_slot, keys[idx], h->key_len);
+ hit = !h->rte_hash_cmp_eq(key_slot->key, keys[idx], h->key_len);
+ if (data != NULL)
+ data[idx] = key_slot->pdata;
+
*hits |= (uint64_t)(hit) << idx;
}
static inline void
__rte_hash_lookup_bulk(const struct rte_hash *h, const void **keys,
- uint32_t num_keys, int32_t *positions)
+ uint32_t num_keys, int32_t *positions,
+ uint64_t *hit_mask, void *data[])
{
uint64_t hits = 0;
uint64_t extra_hits_mask = 0;
uint64_t lookup_mask, miss_mask;
unsigned idx;
const void *key_store = h->key_store;
+ int ret;
hash_sig_t hash_vals[RTE_HASH_LOOKUP_BULK_MAX];
unsigned idx00, idx01, idx10, idx11, idx20, idx21, idx30, idx31;
const struct rte_hash_bucket *secondary_bkt10, *secondary_bkt11;
const struct rte_hash_bucket *primary_bkt20, *primary_bkt21;
const struct rte_hash_bucket *secondary_bkt20, *secondary_bkt21;
- const void *k_slot20, *k_slot21, *k_slot30, *k_slot31;
+ const struct rte_hash_key *k_slot20, *k_slot21, *k_slot30, *k_slot31;
hash_sig_t primary_hash10, primary_hash11;
hash_sig_t secondary_hash10, secondary_hash11;
hash_sig_t primary_hash20, primary_hash21;
lookup_stage2(idx21, primary_hash21, secondary_hash21,
primary_bkt21, secondary_bkt21, &k_slot21, positions,
&extra_hits_mask, key_store, h);
- lookup_stage3(idx30, k_slot30, keys, &hits, h);
- lookup_stage3(idx31, k_slot31, keys, &hits, h);
+ lookup_stage3(idx30, k_slot30, keys, data, &hits, h);
+ lookup_stage3(idx31, k_slot31, keys, data, &hits, h);
}
k_slot30 = k_slot20, k_slot31 = k_slot21;
lookup_stage2(idx21, primary_hash21, secondary_hash21, primary_bkt21,
secondary_bkt21, &k_slot21, positions, &extra_hits_mask,
key_store, h);
- lookup_stage3(idx30, k_slot30, keys, &hits, h);
- lookup_stage3(idx31, k_slot31, keys, &hits, h);
+ lookup_stage3(idx30, k_slot30, keys, data, &hits, h);
+ lookup_stage3(idx31, k_slot31, keys, data, &hits, h);
k_slot30 = k_slot20, k_slot31 = k_slot21;
idx30 = idx20, idx31 = idx21;
lookup_stage2(idx21, primary_hash21, secondary_hash21, primary_bkt21,
secondary_bkt21, &k_slot21, positions, &extra_hits_mask,
key_store, h);
- lookup_stage3(idx30, k_slot30, keys, &hits, h);
- lookup_stage3(idx31, k_slot31, keys, &hits, h);
+ lookup_stage3(idx30, k_slot30, keys, data, &hits, h);
+ lookup_stage3(idx31, k_slot31, keys, data, &hits, h);
k_slot30 = k_slot20, k_slot31 = k_slot21;
idx30 = idx20, idx31 = idx21;
- lookup_stage3(idx30, k_slot30, keys, &hits, h);
- lookup_stage3(idx31, k_slot31, keys, &hits, h);
+ lookup_stage3(idx30, k_slot30, keys, data, &hits, h);
+ lookup_stage3(idx31, k_slot31, keys, data, &hits, h);
/* ignore any items we have already found */
extra_hits_mask &= ~hits;
/* run a single search for each remaining item */
do {
idx = __builtin_ctzl(extra_hits_mask);
- positions[idx] = rte_hash_lookup_with_hash(h, keys[idx],
- hash_vals[idx]);
+ if (data != NULL) {
+ ret = rte_hash_lookup_with_hash_data(h,
+ keys[idx], hash_vals[idx], &data[idx]);
+ if (ret >= 0)
+ hits |= 1ULL << idx;
+ } else {
+ positions[idx] = rte_hash_lookup_with_hash(h,
+ keys[idx], hash_vals[idx]);
+ if (positions[idx] >= 0)
+ hits |= 1llu << idx;
+ }
extra_hits_mask &= ~(1llu << idx);
- if (positions[idx] >= 0)
- hits |= 1llu << idx;
} while (extra_hits_mask);
}
miss_mask &= ~(1llu << idx);
} while (miss_mask);
}
+
+ if (hit_mask != NULL)
+ *hit_mask = hits;
}
int
(num_keys > RTE_HASH_LOOKUP_BULK_MAX) ||
(positions == NULL)), -EINVAL);
- __rte_hash_lookup_bulk(h, keys, num_keys, positions);
+ __rte_hash_lookup_bulk(h, keys, num_keys, positions, NULL, NULL);
return 0;
}
+int
+rte_hash_lookup_bulk_data(const struct rte_hash *h, const void **keys,
+ uint32_t num_keys, uint64_t *hit_mask, void *data[])
+{
+ RETURN_IF_TRUE(((h == NULL) || (keys == NULL) || (num_keys == 0) ||
+ (num_keys > RTE_HASH_LOOKUP_BULK_MAX) ||
+ (hit_mask == NULL)), -EINVAL);
+
+ int32_t positions[num_keys];
+
+ __rte_hash_lookup_bulk(h, keys, num_keys, positions, hit_mask, data);
+
+ /* Return number of hits */
+ return __builtin_popcountl(*hit_mask);
+}
+
/* Functions to compare multiple of 16 byte keys (up to 128 bytes) */
static int
rte_hash_k16_cmp_eq(const void *key1, const void *key2, size_t key_len __rte_unused)
rte_hash_function hash_func; /**< Primary Hash function used to calculate hash. */
uint32_t hash_func_init_val; /**< Init value used by hash_func. */
int socket_id; /**< NUMA Socket ID for memory. */
+ uint8_t extra_flag; /**< Indicate if additional parameters are present. */
};
/** @internal A hash table structure. */
struct rte_hash;
-
/**
* Create a new hash table.
*
void
rte_hash_reset(struct rte_hash *h);
+/**
+ * Add a key-value pair to an existing hash table.
+ * This operation is not multi-thread safe
+ * and should only be called from one thread.
+ *
+ * @param h
+ * Hash table to add the key to.
+ * @param key
+ * Key to add to the hash table.
+ * @param data
+ * Data to add to the hash table.
+ * @return
+ * - 0 if added successfully
+ * - -EINVAL if the parameters are invalid.
+ * - -ENOSPC if there is no space in the hash for this key.
+ */
+int
+rte_hash_add_key_data(const struct rte_hash *h, const void *key, void *data);
+
+/**
+ * Add a key-value pair with a pre-computed hash value
+ * to an existing hash table.
+ * This operation is not multi-thread safe
+ * and should only be called from one thread.
+ *
+ * @param h
+ * Hash table to add the key to.
+ * @param key
+ * Key to add to the hash table.
+ * @param sig
+ * Precomputed hash value for 'key'
+ * @param data
+ * Data to add to the hash table.
+ * @return
+ * - 0 if added successfully
+ * - -EINVAL if the parameters are invalid.
+ * - -ENOSPC if there is no space in the hash for this key.
+ */
+int32_t
+rte_hash_add_key_with_hash_data(const struct rte_hash *h, const void *key,
+ hash_sig_t sig, void *data);
+
/**
* Add a key to an existing hash table. This operation is not multi-thread safe
* and should only be called from one thread.
int32_t
rte_hash_del_key_with_hash(const struct rte_hash *h, const void *key, hash_sig_t sig);
+
+/**
+ * Find a key-value pair in the hash table.
+ * This operation is multi-thread safe.
+ *
+ * @param h
+ * Hash table to look in.
+ * @param key
+ * Key to find.
+ * @param data
+ * Output with pointer to data returned from the hash table.
+ * @return
+ * 0 if successful lookup
+ * - EINVAL if the parameters are invalid.
+ * - ENOENT if the key is not found.
+ */
+int
+rte_hash_lookup_data(const struct rte_hash *h, const void *key, void **data);
+
+/**
+ * Find a key-value pair with a pre-computed hash value
+ * to an existing hash table.
+ * This operation is multi-thread safe.
+ *
+ * @param h
+ * Hash table to look in.
+ * @param key
+ * Key to find.
+ * @param sig
+ * Precomputed hash value for 'key'
+ * @param data
+ * Output with pointer to data returned from the hash table.
+ * @return
+ * 0 if successful lookup
+ * - EINVAL if the parameters are invalid.
+ * - ENOENT if the key is not found.
+ */
+int
+rte_hash_lookup_with_hash_data(const struct rte_hash *h, const void *key,
+ hash_sig_t sig, void **data);
+
/**
* Find a key in the hash table.
* This operation is multi-thread safe.
rte_hash_hash(const struct rte_hash *h, const void *key);
#define rte_hash_lookup_multi rte_hash_lookup_bulk
+#define rte_hash_lookup_multi_data rte_hash_lookup_bulk_data
+/**
+ * Find multiple keys in the hash table.
+ * This operation is multi-thread safe.
+ *
+ * @param h
+ * Hash table to look in.
+ * @param keys
+ * A pointer to a list of keys to look for.
+ * @param num_keys
+ * How many keys are in the keys list (less than RTE_HASH_LOOKUP_BULK_MAX).
+ * @param hit_mask
+ * Output containing a bitmask with all successful lookups.
+ * @param data
+ * Output containing array of data returned from all the successful lookups.
+ * @return
+ * -EINVAL if there's an error, otherwise number of successful lookups.
+ */
+int
+rte_hash_lookup_bulk_data(const struct rte_hash *h, const void **keys,
+ uint32_t num_keys, uint64_t *hit_mask, void *data[]);
+
/**
* Find multiple keys in the hash table.
* This operation is multi-thread safe.
int
rte_hash_lookup_bulk(const struct rte_hash *h, const void **keys,
uint32_t num_keys, int32_t *positions);
-
#ifdef __cplusplus
}
#endif
git.droids-corp.org / dpdk.git / commitdiff