/*-
- * BSD LICENSE
+ * BSD LICENSE
*
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
+ * Copyright(c) 2010-2017 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:
+ * 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.
+ * * 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.
+ * 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 <string.h>
#include <stdio.h>
#include "rte_table_hash.h"
#include "rte_lru.h"
-#define RTE_TABLE_HASH_KEY_SIZE 16
+#define KEY_SIZE 16
+
+#define KEYS_PER_BUCKET 4
#define RTE_BUCKET_ENTRY_VALID 0x1LLU
/* Input parameters */
uint32_t n_buckets;
- uint32_t n_entries_per_bucket;
uint32_t key_size;
uint32_t entry_size;
uint32_t bucket_size;
- uint32_t signature_offset;
uint32_t key_offset;
uint64_t key_mask[2];
rte_table_hash_op_hash f_hash;
};
static int
-check_params_create_lru(struct rte_table_hash_key16_lru_params *params) {
- /* n_entries */
- if (params->n_entries == 0) {
- RTE_LOG(ERR, TABLE, "%s: n_entries is zero\n", __func__);
+keycmp(void *a, void *b, void *b_mask)
+{
+ uint64_t *a64 = a, *b64 = b, *b_mask64 = b_mask;
+
+ return (a64[0] != (b64[0] & b_mask64[0])) ||
+ (a64[1] != (b64[1] & b_mask64[1]));
+}
+
+static void
+keycpy(void *dst, void *src, void *src_mask)
+{
+ uint64_t *dst64 = dst, *src64 = src, *src_mask64 = src_mask;
+
+ dst64[0] = src64[0] & src_mask64[0];
+ dst64[1] = src64[1] & src_mask64[1];
+}
+
+static int
+check_params_create(struct rte_table_hash_params *params)
+{
+ /* name */
+ if (params->name == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: name invalid value\n", __func__);
+ return -EINVAL;
+ }
+
+ /* key_size */
+ if (params->key_size != KEY_SIZE) {
+ RTE_LOG(ERR, TABLE, "%s: key_size invalid value\n", __func__);
+ return -EINVAL;
+ }
+
+ /* n_keys */
+ if (params->n_keys == 0) {
+ RTE_LOG(ERR, TABLE, "%s: n_keys is zero\n", __func__);
+ return -EINVAL;
+ }
+
+ /* n_buckets */
+ if ((params->n_buckets == 0) ||
+ (!rte_is_power_of_2(params->n_buckets))) {
+ RTE_LOG(ERR, TABLE, "%s: n_buckets invalid value\n", __func__);
return -EINVAL;
}
/* f_hash */
if (params->f_hash == NULL) {
- RTE_LOG(ERR, TABLE,
- "%s: f_hash function pointer is NULL\n", __func__);
+ RTE_LOG(ERR, TABLE, "%s: f_hash function pointer is NULL\n",
+ __func__);
return -EINVAL;
}
int socket_id,
uint32_t entry_size)
{
- struct rte_table_hash_key16_lru_params *p =
- (struct rte_table_hash_key16_lru_params *) params;
+ struct rte_table_hash_params *p = params;
struct rte_table_hash *f;
- uint32_t n_buckets, n_entries_per_bucket,
- key_size, bucket_size_cl, total_size, i;
+ uint64_t bucket_size, total_size;
+ uint32_t n_buckets, i;
/* Check input parameters */
- if ((check_params_create_lru(p) != 0) ||
+ if ((check_params_create(p) != 0) ||
((sizeof(struct rte_table_hash) % RTE_CACHE_LINE_SIZE) != 0) ||
((sizeof(struct rte_bucket_4_16) % 64) != 0))
return NULL;
- n_entries_per_bucket = 4;
- key_size = 16;
+
+ /*
+ * Table dimensioning
+ *
+ * Objective: Pick the number of buckets (n_buckets) so that there a chance
+ * to store n_keys keys in the table.
+ *
+ * Note: Since the buckets do not get extended, it is not possible to
+ * guarantee that n_keys keys can be stored in the table at any time. In the
+ * worst case scenario when all the n_keys fall into the same bucket, only
+ * a maximum of KEYS_PER_BUCKET keys will be stored in the table. This case
+ * defeats the purpose of the hash table. It indicates unsuitable f_hash or
+ * n_keys to n_buckets ratio.
+ *
+ * MIN(n_buckets) = (n_keys + KEYS_PER_BUCKET - 1) / KEYS_PER_BUCKET
+ */
+ n_buckets = rte_align32pow2(
+ (p->n_keys + KEYS_PER_BUCKET - 1) / KEYS_PER_BUCKET);
+ n_buckets = RTE_MAX(n_buckets, p->n_buckets);
/* Memory allocation */
- n_buckets = rte_align32pow2((p->n_entries + n_entries_per_bucket - 1) /
- n_entries_per_bucket);
- bucket_size_cl = (sizeof(struct rte_bucket_4_16) + n_entries_per_bucket
- * entry_size + RTE_CACHE_LINE_SIZE - 1) / RTE_CACHE_LINE_SIZE;
- total_size = sizeof(struct rte_table_hash) + n_buckets *
- bucket_size_cl * RTE_CACHE_LINE_SIZE;
-
- f = rte_zmalloc_socket("TABLE", total_size, RTE_CACHE_LINE_SIZE, socket_id);
+ bucket_size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct rte_bucket_4_16) +
+ KEYS_PER_BUCKET * entry_size);
+ total_size = sizeof(struct rte_table_hash) + n_buckets * bucket_size;
+
+ if (total_size > SIZE_MAX) {
+ RTE_LOG(ERR, TABLE, "%s: Cannot allocate %" PRIu64 " bytes "
+ "for hash table %s\n",
+ __func__, total_size, p->name);
+ return NULL;
+ }
+
+ f = rte_zmalloc_socket(p->name,
+ (size_t)total_size,
+ RTE_CACHE_LINE_SIZE,
+ socket_id);
if (f == NULL) {
- RTE_LOG(ERR, TABLE,
- "%s: Cannot allocate %u bytes for hash table\n",
- __func__, total_size);
+ RTE_LOG(ERR, TABLE, "%s: Cannot allocate %" PRIu64 " bytes "
+ "for hash table %s\n",
+ __func__, total_size, p->name);
return NULL;
}
- RTE_LOG(INFO, TABLE,
- "%s: Hash table memory footprint is %u bytes\n",
- __func__, total_size);
+ RTE_LOG(INFO, TABLE, "%s: Hash table %s memory footprint "
+ "is %" PRIu64 " bytes\n",
+ __func__, p->name, total_size);
/* Memory initialization */
f->n_buckets = n_buckets;
- f->n_entries_per_bucket = n_entries_per_bucket;
- f->key_size = key_size;
+ f->key_size = KEY_SIZE;
f->entry_size = entry_size;
- f->bucket_size = bucket_size_cl * RTE_CACHE_LINE_SIZE;
- f->signature_offset = p->signature_offset;
+ f->bucket_size = bucket_size;
f->key_offset = p->key_offset;
f->f_hash = p->f_hash;
f->seed = p->seed;
uint64_t signature, pos;
uint32_t bucket_index, i;
- signature = f->f_hash(key, f->key_size, f->seed);
+ signature = f->f_hash(key, f->key_mask, f->key_size, f->seed);
bucket_index = signature & (f->n_buckets - 1);
bucket = (struct rte_bucket_4_16 *)
- &f->memory[bucket_index * f->bucket_size];
+ &f->memory[bucket_index * f->bucket_size];
signature |= RTE_BUCKET_ENTRY_VALID;
/* Key is present in the bucket */
for (i = 0; i < 4; i++) {
uint64_t bucket_signature = bucket->signature[i];
- uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+ uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
if ((bucket_signature == signature) &&
- (memcmp(key, bucket_key, f->key_size) == 0)) {
+ (keycmp(bucket_key, key, f->key_mask) == 0)) {
uint8_t *bucket_data = &bucket->data[i * f->entry_size];
memcpy(bucket_data, entry, f->entry_size);
/* Key is not present in the bucket */
for (i = 0; i < 4; i++) {
uint64_t bucket_signature = bucket->signature[i];
- uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+ uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
if (bucket_signature == 0) {
uint8_t *bucket_data = &bucket->data[i * f->entry_size];
bucket->signature[i] = signature;
- memcpy(bucket_key, key, f->key_size);
+ keycpy(bucket_key, key, f->key_mask);
memcpy(bucket_data, entry, f->entry_size);
lru_update(bucket, i);
*key_found = 0;
/* Bucket full: replace LRU entry */
pos = lru_pos(bucket);
bucket->signature[pos] = signature;
- memcpy(bucket->key[pos], key, f->key_size);
+ keycpy(&bucket->key[pos], key, f->key_mask);
memcpy(&bucket->data[pos * f->entry_size], entry, f->entry_size);
lru_update(bucket, pos);
*key_found = 0;
uint64_t signature;
uint32_t bucket_index, i;
- signature = f->f_hash(key, f->key_size, f->seed);
+ signature = f->f_hash(key, f->key_mask, f->key_size, f->seed);
bucket_index = signature & (f->n_buckets - 1);
bucket = (struct rte_bucket_4_16 *)
- &f->memory[bucket_index * f->bucket_size];
+ &f->memory[bucket_index * f->bucket_size];
signature |= RTE_BUCKET_ENTRY_VALID;
/* Key is present in the bucket */
for (i = 0; i < 4; i++) {
uint64_t bucket_signature = bucket->signature[i];
- uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+ uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
if ((bucket_signature == signature) &&
- (memcmp(key, bucket_key, f->key_size) == 0)) {
+ (keycmp(bucket_key, key, f->key_mask) == 0)) {
uint8_t *bucket_data = &bucket->data[i * f->entry_size];
bucket->signature[i] = 0;
return 0;
}
-static int
-check_params_create_ext(struct rte_table_hash_key16_ext_params *params) {
- /* n_entries */
- if (params->n_entries == 0) {
- RTE_LOG(ERR, TABLE, "%s: n_entries is zero\n", __func__);
- return -EINVAL;
- }
-
- /* n_entries_ext */
- if (params->n_entries_ext == 0) {
- RTE_LOG(ERR, TABLE, "%s: n_entries_ext is zero\n", __func__);
- return -EINVAL;
- }
-
- /* f_hash */
- if (params->f_hash == NULL) {
- RTE_LOG(ERR, TABLE,
- "%s: f_hash function pointer is NULL\n", __func__);
- return -EINVAL;
- }
-
- return 0;
-}
-
static void *
rte_table_hash_create_key16_ext(void *params,
int socket_id,
uint32_t entry_size)
{
- struct rte_table_hash_key16_ext_params *p =
- (struct rte_table_hash_key16_ext_params *) params;
+ struct rte_table_hash_params *p = params;
struct rte_table_hash *f;
- uint32_t n_buckets, n_buckets_ext, n_entries_per_bucket, key_size,
- bucket_size_cl, stack_size_cl, total_size, i;
+ uint64_t bucket_size, stack_size, total_size;
+ uint32_t n_buckets_ext, i;
/* Check input parameters */
- if ((check_params_create_ext(p) != 0) ||
+ if ((check_params_create(p) != 0) ||
((sizeof(struct rte_table_hash) % RTE_CACHE_LINE_SIZE) != 0) ||
((sizeof(struct rte_bucket_4_16) % 64) != 0))
return NULL;
- n_entries_per_bucket = 4;
- key_size = 16;
+ /*
+ * Table dimensioning
+ *
+ * Objective: Pick the number of bucket extensions (n_buckets_ext) so that
+ * it is guaranteed that n_keys keys can be stored in the table at any time.
+ *
+ * The worst case scenario takes place when all the n_keys keys fall into
+ * the same bucket. Actually, due to the KEYS_PER_BUCKET scheme, the worst
+ * case takes place when (n_keys - KEYS_PER_BUCKET + 1) keys fall into the
+ * same bucket, while the remaining (KEYS_PER_BUCKET - 1) keys each fall
+ * into a different bucket. This case defeats the purpose of the hash table.
+ * It indicates unsuitable f_hash or n_keys to n_buckets ratio.
+ *
+ * n_buckets_ext = n_keys / KEYS_PER_BUCKET + KEYS_PER_BUCKET - 1
+ */
+ n_buckets_ext = p->n_keys / KEYS_PER_BUCKET + KEYS_PER_BUCKET - 1;
/* Memory allocation */
- n_buckets = rte_align32pow2((p->n_entries + n_entries_per_bucket - 1) /
- n_entries_per_bucket);
- n_buckets_ext = (p->n_entries_ext + n_entries_per_bucket - 1) /
- n_entries_per_bucket;
- bucket_size_cl = (sizeof(struct rte_bucket_4_16) + n_entries_per_bucket
- * entry_size + RTE_CACHE_LINE_SIZE - 1) / RTE_CACHE_LINE_SIZE;
- stack_size_cl = (n_buckets_ext * sizeof(uint32_t) + RTE_CACHE_LINE_SIZE - 1)
- / RTE_CACHE_LINE_SIZE;
+ bucket_size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct rte_bucket_4_16) +
+ KEYS_PER_BUCKET * entry_size);
+ stack_size = RTE_CACHE_LINE_ROUNDUP(n_buckets_ext * sizeof(uint32_t));
total_size = sizeof(struct rte_table_hash) +
- ((n_buckets + n_buckets_ext) * bucket_size_cl + stack_size_cl) *
- RTE_CACHE_LINE_SIZE;
+ (p->n_buckets + n_buckets_ext) * bucket_size + stack_size;
+ if (total_size > SIZE_MAX) {
+ RTE_LOG(ERR, TABLE, "%s: Cannot allocate %" PRIu64 " bytes "
+ "for hash table %s\n",
+ __func__, total_size, p->name);
+ return NULL;
+ }
- f = rte_zmalloc_socket("TABLE", total_size, RTE_CACHE_LINE_SIZE, socket_id);
+ f = rte_zmalloc_socket(p->name,
+ (size_t)total_size,
+ RTE_CACHE_LINE_SIZE,
+ socket_id);
if (f == NULL) {
- RTE_LOG(ERR, TABLE,
- "%s: Cannot allocate %u bytes for hash table\n",
- __func__, total_size);
+ RTE_LOG(ERR, TABLE, "%s: Cannot allocate %" PRIu64 " bytes "
+ "for hash table %s\n",
+ __func__, total_size, p->name);
return NULL;
}
- RTE_LOG(INFO, TABLE,
- "%s: Hash table memory footprint is %u bytes\n",
- __func__, total_size);
+ RTE_LOG(INFO, TABLE, "%s: Hash table %s memory footprint "
+ "is %" PRIu64 " bytes\n",
+ __func__, p->name, total_size);
/* Memory initialization */
- f->n_buckets = n_buckets;
- f->n_entries_per_bucket = n_entries_per_bucket;
- f->key_size = key_size;
+ f->n_buckets = p->n_buckets;
+ f->key_size = KEY_SIZE;
f->entry_size = entry_size;
- f->bucket_size = bucket_size_cl * RTE_CACHE_LINE_SIZE;
- f->signature_offset = p->signature_offset;
+ f->bucket_size = bucket_size;
f->key_offset = p->key_offset;
f->f_hash = p->f_hash;
f->seed = p->seed;
f->n_buckets_ext = n_buckets_ext;
f->stack_pos = n_buckets_ext;
f->stack = (uint32_t *)
- &f->memory[(n_buckets + n_buckets_ext) * f->bucket_size];
-
- for (i = 0; i < n_buckets_ext; i++)
- f->stack[i] = i;
+ &f->memory[(p->n_buckets + n_buckets_ext) * f->bucket_size];
if (p->key_mask != NULL) {
f->key_mask[0] = (((uint64_t *)p->key_mask)[0]);
f->key_mask[1] = 0xFFFFFFFFFFFFFFFFLLU;
}
+ for (i = 0; i < n_buckets_ext; i++)
+ f->stack[i] = i;
+
return f;
}
uint64_t signature;
uint32_t bucket_index, i;
- signature = f->f_hash(key, f->key_size, f->seed);
+ signature = f->f_hash(key, f->key_mask, f->key_size, f->seed);
bucket_index = signature & (f->n_buckets - 1);
bucket0 = (struct rte_bucket_4_16 *)
- &f->memory[bucket_index * f->bucket_size];
+ &f->memory[bucket_index * f->bucket_size];
signature |= RTE_BUCKET_ENTRY_VALID;
/* Key is present in the bucket */
for (bucket = bucket0; bucket != NULL; bucket = bucket->next)
for (i = 0; i < 4; i++) {
uint64_t bucket_signature = bucket->signature[i];
- uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+ uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
if ((bucket_signature == signature) &&
- (memcmp(key, bucket_key, f->key_size) == 0)) {
+ (keycmp(bucket_key, key, f->key_mask) == 0)) {
uint8_t *bucket_data = &bucket->data[i *
f->entry_size];
/* Key is not present in the bucket */
for (bucket_prev = NULL, bucket = bucket0; bucket != NULL;
- bucket_prev = bucket, bucket = bucket->next)
+ bucket_prev = bucket, bucket = bucket->next)
for (i = 0; i < 4; i++) {
uint64_t bucket_signature = bucket->signature[i];
- uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+ uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
if (bucket_signature == 0) {
uint8_t *bucket_data = &bucket->data[i *
f->entry_size];
bucket->signature[i] = signature;
- memcpy(bucket_key, key, f->key_size);
+ keycpy(bucket_key, key, f->key_mask);
memcpy(bucket_data, entry, f->entry_size);
*key_found = 0;
*entry_ptr = (void *) bucket_data;
bucket_prev->next_valid = 1;
bucket->signature[0] = signature;
- memcpy(bucket->key[0], key, f->key_size);
+ keycpy(&bucket->key[0], key, f->key_mask);
memcpy(&bucket->data[0], entry, f->entry_size);
*key_found = 0;
*entry_ptr = (void *) &bucket->data[0];
uint64_t signature;
uint32_t bucket_index, i;
- signature = f->f_hash(key, f->key_size, f->seed);
+ signature = f->f_hash(key, f->key_mask, f->key_size, f->seed);
bucket_index = signature & (f->n_buckets - 1);
bucket0 = (struct rte_bucket_4_16 *)
&f->memory[bucket_index * f->bucket_size];
bucket_prev = bucket, bucket = bucket->next)
for (i = 0; i < 4; i++) {
uint64_t bucket_signature = bucket->signature[i];
- uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+ uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
if ((bucket_signature == signature) &&
- (memcmp(key, bucket_key, f->key_size) == 0)) {
+ (keycmp(bucket_key, key, f->key_mask) == 0)) {
uint8_t *bucket_data = &bucket->data[i *
f->entry_size];
bucket->signature[i] = 0;
*key_found = 1;
if (entry)
- memcpy(entry, bucket_data,
- f->entry_size);
+ memcpy(entry, bucket_data, f->entry_size);
if ((bucket->signature[0] == 0) &&
(bucket->signature[1] == 0) &&
return 0;
}
-#define lookup_key16_cmp(key_in, bucket, pos) \
+#define lookup_key16_cmp(key_in, bucket, pos, f) \
{ \
- uint64_t xor[4][2], or[4], signature[4]; \
+ uint64_t xor[4][2], or[4], signature[4], k[2]; \
\
+ k[0] = key_in[0] & f->key_mask[0]; \
+ k[1] = key_in[1] & f->key_mask[1]; \
signature[0] = (~bucket->signature[0]) & 1; \
signature[1] = (~bucket->signature[1]) & 1; \
signature[2] = (~bucket->signature[2]) & 1; \
signature[3] = (~bucket->signature[3]) & 1; \
\
- xor[0][0] = key_in[0] ^ bucket->key[0][0]; \
- xor[0][1] = key_in[1] ^ bucket->key[0][1]; \
+ xor[0][0] = k[0] ^ bucket->key[0][0]; \
+ xor[0][1] = k[1] ^ bucket->key[0][1]; \
\
- xor[1][0] = key_in[0] ^ bucket->key[1][0]; \
- xor[1][1] = key_in[1] ^ bucket->key[1][1]; \
+ xor[1][0] = k[0] ^ bucket->key[1][0]; \
+ xor[1][1] = k[1] ^ bucket->key[1][1]; \
\
- xor[2][0] = key_in[0] ^ bucket->key[2][0]; \
- xor[2][1] = key_in[1] ^ bucket->key[2][1]; \
+ xor[2][0] = k[0] ^ bucket->key[2][0]; \
+ xor[2][1] = k[1] ^ bucket->key[2][1]; \
\
- xor[3][0] = key_in[0] ^ bucket->key[3][0]; \
- xor[3][1] = key_in[1] ^ bucket->key[3][1]; \
+ xor[3][0] = k[0] ^ bucket->key[3][0]; \
+ xor[3][1] = k[1] ^ bucket->key[3][1]; \
\
or[0] = xor[0][0] | xor[0][1] | signature[0]; \
or[1] = xor[1][0] | xor[1][1] | signature[1]; \
}
#define lookup1_stage1(mbuf1, bucket1, f) \
-{ \
- uint64_t signature; \
- uint32_t bucket_index; \
- \
- signature = RTE_MBUF_METADATA_UINT32(mbuf1, f->signature_offset);\
- bucket_index = signature & (f->n_buckets - 1); \
- bucket1 = (struct rte_bucket_4_16 *) \
- &f->memory[bucket_index * f->bucket_size]; \
- rte_prefetch0(bucket1); \
- rte_prefetch0((void *)(((uintptr_t) bucket1) + RTE_CACHE_LINE_SIZE));\
-}
-
-#define lookup1_stage1_dosig(mbuf1, bucket1, f) \
{ \
uint64_t *key; \
uint64_t signature = 0; \
uint32_t bucket_index; \
- uint64_t hash_key_buffer[2]; \
\
key = RTE_MBUF_METADATA_UINT64_PTR(mbuf1, f->key_offset);\
- \
- hash_key_buffer[0] = key[0] & f->key_mask[0]; \
- hash_key_buffer[1] = key[1] & f->key_mask[1]; \
- signature = f->f_hash(hash_key_buffer, \
- RTE_TABLE_HASH_KEY_SIZE, f->seed); \
+ signature = f->f_hash(key, f->key_mask, KEY_SIZE, f->seed); \
\
bucket_index = signature & (f->n_buckets - 1); \
bucket1 = (struct rte_bucket_4_16 *) \
void *a; \
uint64_t pkt_mask; \
uint64_t *key; \
- uint64_t hash_key_buffer[2]; \
uint32_t pos; \
\
key = RTE_MBUF_METADATA_UINT64_PTR(mbuf2, f->key_offset);\
- hash_key_buffer[0] = key[0] & f->key_mask[0]; \
- hash_key_buffer[1] = key[1] & f->key_mask[1]; \
- \
- lookup_key16_cmp(hash_key_buffer, bucket2, pos); \
+ lookup_key16_cmp(key, bucket2, pos, f); \
\
pkt_mask = (bucket2->signature[pos] & 1LLU) << pkt2_index;\
pkts_mask_out |= pkt_mask; \
void *a; \
uint64_t pkt_mask, bucket_mask; \
uint64_t *key; \
- uint64_t hash_key_buffer[2]; \
uint32_t pos; \
\
key = RTE_MBUF_METADATA_UINT64_PTR(mbuf2, f->key_offset);\
- hash_key_buffer[0] = key[0] & f->key_mask[0]; \
- hash_key_buffer[1] = key[1] & f->key_mask[1]; \
- \
- lookup_key16_cmp(hash_key_buffer, bucket2, pos); \
+ lookup_key16_cmp(key, bucket2, pos, f); \
\
pkt_mask = (bucket2->signature[pos] & 1LLU) << pkt2_index;\
pkts_mask_out |= pkt_mask; \
void *a; \
uint64_t pkt_mask, bucket_mask; \
uint64_t *key; \
- uint64_t hash_key_buffer[2]; \
uint32_t pos; \
\
bucket = buckets[pkt_index]; \
key = keys[pkt_index]; \
- hash_key_buffer[0] = key[0] & f->key_mask[0]; \
- hash_key_buffer[1] = key[1] & f->key_mask[1]; \
- \
- lookup_key16_cmp(hash_key_buffer, bucket, pos); \
+ lookup_key16_cmp(key, bucket, pos, f); \
\
pkt_mask = (bucket->signature[pos] & 1LLU) << pkt_index;\
pkts_mask_out |= pkt_mask; \
}
#define lookup2_stage1(mbuf10, mbuf11, bucket10, bucket11, f) \
-{ \
- uint64_t signature10, signature11; \
- uint32_t bucket10_index, bucket11_index; \
- \
- signature10 = RTE_MBUF_METADATA_UINT32(mbuf10, f->signature_offset);\
- bucket10_index = signature10 & (f->n_buckets - 1); \
- bucket10 = (struct rte_bucket_4_16 *) \
- &f->memory[bucket10_index * f->bucket_size]; \
- rte_prefetch0(bucket10); \
- rte_prefetch0((void *)(((uintptr_t) bucket10) + RTE_CACHE_LINE_SIZE));\
- \
- signature11 = RTE_MBUF_METADATA_UINT32(mbuf11, f->signature_offset);\
- bucket11_index = signature11 & (f->n_buckets - 1); \
- bucket11 = (struct rte_bucket_4_16 *) \
- &f->memory[bucket11_index * f->bucket_size]; \
- rte_prefetch0(bucket11); \
- rte_prefetch0((void *)(((uintptr_t) bucket11) + RTE_CACHE_LINE_SIZE));\
-}
-
-#define lookup2_stage1_dosig(mbuf10, mbuf11, bucket10, bucket11, f) \
{ \
uint64_t *key10, *key11; \
- uint64_t hash_offset_buffer[2]; \
uint64_t signature10, signature11; \
uint32_t bucket10_index, bucket11_index; \
\
key10 = RTE_MBUF_METADATA_UINT64_PTR(mbuf10, f->key_offset);\
- hash_offset_buffer[0] = key10[0] & f->key_mask[0]; \
- hash_offset_buffer[1] = key10[1] & f->key_mask[1]; \
- signature10 = f->f_hash(hash_offset_buffer, \
- RTE_TABLE_HASH_KEY_SIZE, f->seed);\
+ signature10 = f->f_hash(key10, f->key_mask, KEY_SIZE, f->seed);\
bucket10_index = signature10 & (f->n_buckets - 1); \
bucket10 = (struct rte_bucket_4_16 *) \
&f->memory[bucket10_index * f->bucket_size]; \
rte_prefetch0((void *)(((uintptr_t) bucket10) + RTE_CACHE_LINE_SIZE));\
\
key11 = RTE_MBUF_METADATA_UINT64_PTR(mbuf11, f->key_offset);\
- hash_offset_buffer[0] = key11[0] & f->key_mask[0]; \
- hash_offset_buffer[1] = key11[1] & f->key_mask[1]; \
- signature11 = f->f_hash(hash_offset_buffer, \
- RTE_TABLE_HASH_KEY_SIZE, f->seed);\
+ signature11 = f->f_hash(key11, f->key_mask, KEY_SIZE, f->seed);\
bucket11_index = signature11 & (f->n_buckets - 1); \
bucket11 = (struct rte_bucket_4_16 *) \
&f->memory[bucket11_index * f->bucket_size]; \
void *a20, *a21; \
uint64_t pkt20_mask, pkt21_mask; \
uint64_t *key20, *key21; \
- uint64_t hash_key_buffer20[2]; \
- uint64_t hash_key_buffer21[2]; \
uint32_t pos20, pos21; \
\
key20 = RTE_MBUF_METADATA_UINT64_PTR(mbuf20, f->key_offset);\
key21 = RTE_MBUF_METADATA_UINT64_PTR(mbuf21, f->key_offset);\
- hash_key_buffer20[0] = key20[0] & f->key_mask[0]; \
- hash_key_buffer20[1] = key20[1] & f->key_mask[1]; \
- hash_key_buffer21[0] = key21[0] & f->key_mask[0]; \
- hash_key_buffer21[1] = key21[1] & f->key_mask[1]; \
\
- lookup_key16_cmp(hash_key_buffer20, bucket20, pos20); \
- lookup_key16_cmp(hash_key_buffer21, bucket21, pos21); \
+ lookup_key16_cmp(key20, bucket20, pos20, f); \
+ lookup_key16_cmp(key21, bucket21, pos21, f); \
\
pkt20_mask = (bucket20->signature[pos20] & 1LLU) << pkt20_index;\
pkt21_mask = (bucket21->signature[pos21] & 1LLU) << pkt21_index;\
void *a20, *a21; \
uint64_t pkt20_mask, pkt21_mask, bucket20_mask, bucket21_mask;\
uint64_t *key20, *key21; \
- uint64_t hash_key_buffer20[2]; \
- uint64_t hash_key_buffer21[2]; \
uint32_t pos20, pos21; \
\
key20 = RTE_MBUF_METADATA_UINT64_PTR(mbuf20, f->key_offset);\
key21 = RTE_MBUF_METADATA_UINT64_PTR(mbuf21, f->key_offset);\
- hash_key_buffer20[0] = key20[0] & f->key_mask[0]; \
- hash_key_buffer20[1] = key20[1] & f->key_mask[1]; \
- hash_key_buffer21[0] = key21[0] & f->key_mask[0]; \
- hash_key_buffer21[1] = key21[1] & f->key_mask[1]; \
\
- lookup_key16_cmp(hash_key_buffer20, bucket20, pos20); \
- lookup_key16_cmp(hash_key_buffer21, bucket21, pos21); \
+ lookup_key16_cmp(key20, bucket20, pos20, f); \
+ lookup_key16_cmp(key21, bucket21, pos21, f); \
\
pkt20_mask = (bucket20->signature[pos20] & 1LLU) << pkt20_index;\
pkt21_mask = (bucket21->signature[pos21] & 1LLU) << pkt21_index;\
uint64_t pkts_mask_out = 0;
__rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
+
RTE_TABLE_HASH_KEY16_STATS_PKTS_IN_ADD(f, n_pkts_in);
/* Cannot run the pipeline with less than 5 packets */
}
*lookup_hit_mask = pkts_mask_out;
- RTE_TABLE_HASH_KEY16_STATS_PKTS_LOOKUP_MISS(f,
- n_pkts_in - __builtin_popcountll(pkts_mask_out));
+ RTE_TABLE_HASH_KEY16_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in -
+ __builtin_popcountll(pkts_mask_out));
return 0;
}
RTE_TABLE_HASH_KEY16_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in -
__builtin_popcountll(pkts_mask_out));
return 0;
-} /* rte_table_hash_lookup_key16_lru() */
-
-static int
-rte_table_hash_lookup_key16_lru_dosig(
- void *table,
- struct rte_mbuf **pkts,
- uint64_t pkts_mask,
- uint64_t *lookup_hit_mask,
- void **entries)
-{
- struct rte_table_hash *f = (struct rte_table_hash *) table;
- struct rte_bucket_4_16 *bucket10, *bucket11, *bucket20, *bucket21;
- struct rte_mbuf *mbuf00, *mbuf01, *mbuf10, *mbuf11, *mbuf20, *mbuf21;
- uint32_t pkt00_index, pkt01_index, pkt10_index;
- uint32_t pkt11_index, pkt20_index, pkt21_index;
- uint64_t pkts_mask_out = 0;
-
- __rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
-
- RTE_TABLE_HASH_KEY16_STATS_PKTS_IN_ADD(f, n_pkts_in);
-
- /* Cannot run the pipeline with less than 5 packets */
- if (__builtin_popcountll(pkts_mask) < 5) {
- for ( ; pkts_mask; ) {
- struct rte_bucket_4_16 *bucket;
- struct rte_mbuf *mbuf;
- uint32_t pkt_index;
-
- lookup1_stage0(pkt_index, mbuf, pkts, pkts_mask, f);
- lookup1_stage1_dosig(mbuf, bucket, f);
- lookup1_stage2_lru(pkt_index, mbuf, bucket,
- pkts_mask_out, entries, f);
- }
-
- *lookup_hit_mask = pkts_mask_out;
- RTE_TABLE_HASH_KEY16_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in -
- __builtin_popcountll(pkts_mask_out));
- return 0;
- }
-
- /*
- * Pipeline fill
- *
- */
- /* Pipeline stage 0 */
- lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01, pkts,
- pkts_mask, f);
-
- /* Pipeline feed */
- mbuf10 = mbuf00;
- mbuf11 = mbuf01;
- pkt10_index = pkt00_index;
- pkt11_index = pkt01_index;
-
- /* Pipeline stage 0 */
- lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01, pkts,
- pkts_mask, f);
-
- /* Pipeline stage 1 */
- lookup2_stage1_dosig(mbuf10, mbuf11, bucket10, bucket11, f);
-
- /*
- * Pipeline run
- *
- */
- for ( ; pkts_mask; ) {
- /* Pipeline feed */
- bucket20 = bucket10;
- bucket21 = bucket11;
- mbuf20 = mbuf10;
- mbuf21 = mbuf11;
- mbuf10 = mbuf00;
- mbuf11 = mbuf01;
- pkt20_index = pkt10_index;
- pkt21_index = pkt11_index;
- pkt10_index = pkt00_index;
- pkt11_index = pkt01_index;
-
- /* Pipeline stage 0 */
- lookup2_stage0_with_odd_support(pkt00_index, pkt01_index,
- mbuf00, mbuf01, pkts, pkts_mask, f);
-
- /* Pipeline stage 1 */
- lookup2_stage1_dosig(mbuf10, mbuf11, bucket10, bucket11, f);
-
- /* Pipeline stage 2 */
- lookup2_stage2_lru(pkt20_index, pkt21_index, mbuf20, mbuf21,
- bucket20, bucket21, pkts_mask_out, entries, f);
- }
-
- /*
- * Pipeline flush
- *
- */
- /* Pipeline feed */
- bucket20 = bucket10;
- bucket21 = bucket11;
- mbuf20 = mbuf10;
- mbuf21 = mbuf11;
- mbuf10 = mbuf00;
- mbuf11 = mbuf01;
- pkt20_index = pkt10_index;
- pkt21_index = pkt11_index;
- pkt10_index = pkt00_index;
- pkt11_index = pkt01_index;
-
- /* Pipeline stage 1 */
- lookup2_stage1_dosig(mbuf10, mbuf11, bucket10, bucket11, f);
-
- /* Pipeline stage 2 */
- lookup2_stage2_lru(pkt20_index, pkt21_index, mbuf20, mbuf21,
- bucket20, bucket21, pkts_mask_out, entries, f);
-
- /* Pipeline feed */
- bucket20 = bucket10;
- bucket21 = bucket11;
- mbuf20 = mbuf10;
- mbuf21 = mbuf11;
- pkt20_index = pkt10_index;
- pkt21_index = pkt11_index;
-
- /* Pipeline stage 2 */
- lookup2_stage2_lru(pkt20_index, pkt21_index, mbuf20, mbuf21,
- bucket20, bucket21, pkts_mask_out, entries, f);
-
- *lookup_hit_mask = pkts_mask_out;
- RTE_TABLE_HASH_KEY16_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in -
- __builtin_popcountll(pkts_mask_out));
- return 0;
-} /* rte_table_hash_lookup_key16_lru_dosig() */
+} /* lookup LRU */
static int
rte_table_hash_lookup_key16_ext(
uint64_t *keys[RTE_PORT_IN_BURST_SIZE_MAX];
__rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
+
RTE_TABLE_HASH_KEY16_STATS_PKTS_IN_ADD(f, n_pkts_in);
/* Cannot run the pipeline with less than 5 packets */
RTE_TABLE_HASH_KEY16_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in -
__builtin_popcountll(pkts_mask_out));
return 0;
-} /* rte_table_hash_lookup_key16_ext() */
-
-static int
-rte_table_hash_lookup_key16_ext_dosig(
- void *table,
- struct rte_mbuf **pkts,
- uint64_t pkts_mask,
- uint64_t *lookup_hit_mask,
- void **entries)
-{
- struct rte_table_hash *f = (struct rte_table_hash *) table;
- struct rte_bucket_4_16 *bucket10, *bucket11, *bucket20, *bucket21;
- struct rte_mbuf *mbuf00, *mbuf01, *mbuf10, *mbuf11, *mbuf20, *mbuf21;
- uint32_t pkt00_index, pkt01_index, pkt10_index;
- uint32_t pkt11_index, pkt20_index, pkt21_index;
- uint64_t pkts_mask_out = 0, buckets_mask = 0;
- struct rte_bucket_4_16 *buckets[RTE_PORT_IN_BURST_SIZE_MAX];
- uint64_t *keys[RTE_PORT_IN_BURST_SIZE_MAX];
-
- __rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
-
- RTE_TABLE_HASH_KEY16_STATS_PKTS_IN_ADD(f, n_pkts_in);
-
- /* Cannot run the pipeline with less than 5 packets */
- if (__builtin_popcountll(pkts_mask) < 5) {
- for ( ; pkts_mask; ) {
- struct rte_bucket_4_16 *bucket;
- struct rte_mbuf *mbuf;
- uint32_t pkt_index;
-
- lookup1_stage0(pkt_index, mbuf, pkts, pkts_mask, f);
- lookup1_stage1_dosig(mbuf, bucket, f);
- lookup1_stage2_ext(pkt_index, mbuf, bucket,
- pkts_mask_out, entries, buckets_mask,
- buckets, keys, f);
- }
-
- goto grind_next_buckets;
- }
-
- /*
- * Pipeline fill
- *
- */
- /* Pipeline stage 0 */
- lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01, pkts,
- pkts_mask, f);
-
- /* Pipeline feed */
- mbuf10 = mbuf00;
- mbuf11 = mbuf01;
- pkt10_index = pkt00_index;
- pkt11_index = pkt01_index;
-
- /* Pipeline stage 0 */
- lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01, pkts,
- pkts_mask, f);
-
- /* Pipeline stage 1 */
- lookup2_stage1_dosig(mbuf10, mbuf11, bucket10, bucket11, f);
-
- /*
- * Pipeline run
- *
- */
- for ( ; pkts_mask; ) {
- /* Pipeline feed */
- bucket20 = bucket10;
- bucket21 = bucket11;
- mbuf20 = mbuf10;
- mbuf21 = mbuf11;
- mbuf10 = mbuf00;
- mbuf11 = mbuf01;
- pkt20_index = pkt10_index;
- pkt21_index = pkt11_index;
- pkt10_index = pkt00_index;
- pkt11_index = pkt01_index;
-
- /* Pipeline stage 0 */
- lookup2_stage0_with_odd_support(pkt00_index, pkt01_index,
- mbuf00, mbuf01, pkts, pkts_mask, f);
-
- /* Pipeline stage 1 */
- lookup2_stage1_dosig(mbuf10, mbuf11, bucket10, bucket11, f);
-
- /* Pipeline stage 2 */
- lookup2_stage2_ext(pkt20_index, pkt21_index, mbuf20, mbuf21,
- bucket20, bucket21, pkts_mask_out, entries,
- buckets_mask, buckets, keys, f);
- }
-
- /*
- * Pipeline flush
- *
- */
- /* Pipeline feed */
- bucket20 = bucket10;
- bucket21 = bucket11;
- mbuf20 = mbuf10;
- mbuf21 = mbuf11;
- mbuf10 = mbuf00;
- mbuf11 = mbuf01;
- pkt20_index = pkt10_index;
- pkt21_index = pkt11_index;
- pkt10_index = pkt00_index;
- pkt11_index = pkt01_index;
-
- /* Pipeline stage 1 */
- lookup2_stage1_dosig(mbuf10, mbuf11, bucket10, bucket11, f);
-
- /* Pipeline stage 2 */
- lookup2_stage2_ext(pkt20_index, pkt21_index, mbuf20, mbuf21,
- bucket20, bucket21, pkts_mask_out, entries,
- buckets_mask, buckets, keys, f);
-
- /* Pipeline feed */
- bucket20 = bucket10;
- bucket21 = bucket11;
- mbuf20 = mbuf10;
- mbuf21 = mbuf11;
- pkt20_index = pkt10_index;
- pkt21_index = pkt11_index;
-
- /* Pipeline stage 2 */
- lookup2_stage2_ext(pkt20_index, pkt21_index, mbuf20, mbuf21,
- bucket20, bucket21, pkts_mask_out, entries,
- buckets_mask, buckets, keys, f);
-
-grind_next_buckets:
- /* Grind next buckets */
- for ( ; buckets_mask; ) {
- uint64_t buckets_mask_next = 0;
-
- for ( ; buckets_mask; ) {
- uint64_t pkt_mask;
- uint32_t pkt_index;
-
- pkt_index = __builtin_ctzll(buckets_mask);
- pkt_mask = 1LLU << pkt_index;
- buckets_mask &= ~pkt_mask;
-
- lookup_grinder(pkt_index, buckets, keys, pkts_mask_out,
- entries, buckets_mask_next, f);
- }
-
- buckets_mask = buckets_mask_next;
- }
-
- *lookup_hit_mask = pkts_mask_out;
- RTE_TABLE_HASH_KEY16_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in -
- __builtin_popcountll(pkts_mask_out));
- return 0;
-} /* rte_table_hash_lookup_key16_ext_dosig() */
+} /* lookup EXT */
static int
rte_table_hash_key16_stats_read(void *table, struct rte_table_stats *stats, int clear)
.f_stats = rte_table_hash_key16_stats_read,
};
-struct rte_table_ops rte_table_hash_key16_lru_dosig_ops = {
- .f_create = rte_table_hash_create_key16_lru,
- .f_free = rte_table_hash_free_key16_lru,
- .f_add = rte_table_hash_entry_add_key16_lru,
- .f_delete = rte_table_hash_entry_delete_key16_lru,
- .f_lookup = rte_table_hash_lookup_key16_lru_dosig,
- .f_stats = rte_table_hash_key16_stats_read,
-};
-
struct rte_table_ops rte_table_hash_key16_ext_ops = {
.f_create = rte_table_hash_create_key16_ext,
.f_free = rte_table_hash_free_key16_ext,
.f_lookup = rte_table_hash_lookup_key16_ext,
.f_stats = rte_table_hash_key16_stats_read,
};
-
-struct rte_table_ops rte_table_hash_key16_ext_dosig_ops = {
- .f_create = rte_table_hash_create_key16_ext,
- .f_free = rte_table_hash_free_key16_ext,
- .f_add = rte_table_hash_entry_add_key16_ext,
- .f_delete = rte_table_hash_entry_delete_key16_ext,
- .f_lookup = rte_table_hash_lookup_key16_ext_dosig,
- .f_stats = rte_table_hash_key16_stats_read,
-};
Code Review / deb_dpdk.git / blobdiff