30a1de105a
These header includes have been flagged by the iwyu_tool and removed. Signed-off-by: Sean Morrissey <sean.morrissey@intel.com>
1186 lines
32 KiB
C
1186 lines
32 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2017 Intel Corporation
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*/
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#include <string.h>
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#include <stdio.h>
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#include <rte_common.h>
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#include <rte_malloc.h>
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#include <rte_log.h>
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#include "rte_table_hash.h"
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#include "rte_lru.h"
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#define KEY_SIZE 16
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#define KEYS_PER_BUCKET 4
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#define RTE_BUCKET_ENTRY_VALID 0x1LLU
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#ifdef RTE_TABLE_STATS_COLLECT
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#define RTE_TABLE_HASH_KEY16_STATS_PKTS_IN_ADD(table, val) \
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table->stats.n_pkts_in += val
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#define RTE_TABLE_HASH_KEY16_STATS_PKTS_LOOKUP_MISS(table, val) \
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table->stats.n_pkts_lookup_miss += val
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#else
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#define RTE_TABLE_HASH_KEY16_STATS_PKTS_IN_ADD(table, val)
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#define RTE_TABLE_HASH_KEY16_STATS_PKTS_LOOKUP_MISS(table, val)
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#endif
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#ifdef RTE_ARCH_64
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struct rte_bucket_4_16 {
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/* Cache line 0 */
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uint64_t signature[4 + 1];
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uint64_t lru_list;
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struct rte_bucket_4_16 *next;
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uint64_t next_valid;
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/* Cache line 1 */
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uint64_t key[4][2];
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/* Cache line 2 */
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uint8_t data[0];
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};
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#else
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struct rte_bucket_4_16 {
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/* Cache line 0 */
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uint64_t signature[4 + 1];
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uint64_t lru_list;
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struct rte_bucket_4_16 *next;
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uint32_t pad;
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uint64_t next_valid;
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/* Cache line 1 */
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uint64_t key[4][2];
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/* Cache line 2 */
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uint8_t data[0];
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};
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#endif
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struct rte_table_hash {
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struct rte_table_stats stats;
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/* Input parameters */
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uint32_t n_buckets;
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uint32_t key_size;
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uint32_t entry_size;
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uint32_t bucket_size;
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uint32_t key_offset;
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uint64_t key_mask[2];
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rte_table_hash_op_hash f_hash;
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uint64_t seed;
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/* Extendible buckets */
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uint32_t n_buckets_ext;
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uint32_t stack_pos;
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uint32_t *stack;
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/* Lookup table */
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uint8_t memory[0] __rte_cache_aligned;
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};
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static int
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keycmp(void *a, void *b, void *b_mask)
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{
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uint64_t *a64 = a, *b64 = b, *b_mask64 = b_mask;
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return (a64[0] != (b64[0] & b_mask64[0])) ||
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(a64[1] != (b64[1] & b_mask64[1]));
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}
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static void
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keycpy(void *dst, void *src, void *src_mask)
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{
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uint64_t *dst64 = dst, *src64 = src, *src_mask64 = src_mask;
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dst64[0] = src64[0] & src_mask64[0];
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dst64[1] = src64[1] & src_mask64[1];
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}
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static int
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check_params_create(struct rte_table_hash_params *params)
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{
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/* name */
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if (params->name == NULL) {
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RTE_LOG(ERR, TABLE, "%s: name invalid value\n", __func__);
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return -EINVAL;
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}
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/* key_size */
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if (params->key_size != KEY_SIZE) {
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RTE_LOG(ERR, TABLE, "%s: key_size invalid value\n", __func__);
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return -EINVAL;
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}
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/* n_keys */
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if (params->n_keys == 0) {
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RTE_LOG(ERR, TABLE, "%s: n_keys is zero\n", __func__);
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return -EINVAL;
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}
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/* n_buckets */
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if ((params->n_buckets == 0) ||
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(!rte_is_power_of_2(params->n_buckets))) {
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RTE_LOG(ERR, TABLE, "%s: n_buckets invalid value\n", __func__);
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return -EINVAL;
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}
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/* f_hash */
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if (params->f_hash == NULL) {
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RTE_LOG(ERR, TABLE, "%s: f_hash function pointer is NULL\n",
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__func__);
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return -EINVAL;
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}
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return 0;
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}
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static void *
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rte_table_hash_create_key16_lru(void *params,
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int socket_id,
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uint32_t entry_size)
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{
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struct rte_table_hash_params *p = params;
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struct rte_table_hash *f;
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uint64_t bucket_size, total_size;
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uint32_t n_buckets, i;
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/* Check input parameters */
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if ((check_params_create(p) != 0) ||
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((sizeof(struct rte_table_hash) % RTE_CACHE_LINE_SIZE) != 0) ||
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((sizeof(struct rte_bucket_4_16) % 64) != 0))
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return NULL;
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/*
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* Table dimensioning
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*
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* Objective: Pick the number of buckets (n_buckets) so that there a chance
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* to store n_keys keys in the table.
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*
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* Note: Since the buckets do not get extended, it is not possible to
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* guarantee that n_keys keys can be stored in the table at any time. In the
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* worst case scenario when all the n_keys fall into the same bucket, only
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* a maximum of KEYS_PER_BUCKET keys will be stored in the table. This case
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* defeats the purpose of the hash table. It indicates unsuitable f_hash or
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* n_keys to n_buckets ratio.
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*
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* MIN(n_buckets) = (n_keys + KEYS_PER_BUCKET - 1) / KEYS_PER_BUCKET
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*/
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n_buckets = rte_align32pow2(
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(p->n_keys + KEYS_PER_BUCKET - 1) / KEYS_PER_BUCKET);
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n_buckets = RTE_MAX(n_buckets, p->n_buckets);
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/* Memory allocation */
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bucket_size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct rte_bucket_4_16) +
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KEYS_PER_BUCKET * entry_size);
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total_size = sizeof(struct rte_table_hash) + n_buckets * bucket_size;
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if (total_size > SIZE_MAX) {
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RTE_LOG(ERR, TABLE, "%s: Cannot allocate %" PRIu64 " bytes "
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"for hash table %s\n",
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__func__, total_size, p->name);
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return NULL;
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}
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f = rte_zmalloc_socket(p->name,
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(size_t)total_size,
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RTE_CACHE_LINE_SIZE,
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socket_id);
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if (f == NULL) {
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RTE_LOG(ERR, TABLE, "%s: Cannot allocate %" PRIu64 " bytes "
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"for hash table %s\n",
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__func__, total_size, p->name);
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return NULL;
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}
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RTE_LOG(INFO, TABLE, "%s: Hash table %s memory footprint "
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"is %" PRIu64 " bytes\n",
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__func__, p->name, total_size);
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/* Memory initialization */
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f->n_buckets = n_buckets;
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f->key_size = KEY_SIZE;
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f->entry_size = entry_size;
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f->bucket_size = bucket_size;
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f->key_offset = p->key_offset;
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f->f_hash = p->f_hash;
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f->seed = p->seed;
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if (p->key_mask != NULL) {
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f->key_mask[0] = ((uint64_t *)p->key_mask)[0];
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f->key_mask[1] = ((uint64_t *)p->key_mask)[1];
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} else {
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f->key_mask[0] = 0xFFFFFFFFFFFFFFFFLLU;
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f->key_mask[1] = 0xFFFFFFFFFFFFFFFFLLU;
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}
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for (i = 0; i < n_buckets; i++) {
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struct rte_bucket_4_16 *bucket;
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bucket = (struct rte_bucket_4_16 *) &f->memory[i *
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f->bucket_size];
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lru_init(bucket);
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}
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return f;
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}
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static int
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rte_table_hash_free_key16_lru(void *table)
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{
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struct rte_table_hash *f = table;
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/* Check input parameters */
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if (f == NULL) {
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RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
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return -EINVAL;
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}
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rte_free(f);
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return 0;
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}
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static int
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rte_table_hash_entry_add_key16_lru(
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void *table,
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void *key,
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void *entry,
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int *key_found,
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void **entry_ptr)
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{
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struct rte_table_hash *f = table;
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struct rte_bucket_4_16 *bucket;
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uint64_t signature, pos;
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uint32_t bucket_index, i;
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signature = f->f_hash(key, f->key_mask, f->key_size, f->seed);
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bucket_index = signature & (f->n_buckets - 1);
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bucket = (struct rte_bucket_4_16 *)
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&f->memory[bucket_index * f->bucket_size];
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signature |= RTE_BUCKET_ENTRY_VALID;
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/* Key is present in the bucket */
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for (i = 0; i < 4; i++) {
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uint64_t bucket_signature = bucket->signature[i];
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uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
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if ((bucket_signature == signature) &&
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(keycmp(bucket_key, key, f->key_mask) == 0)) {
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uint8_t *bucket_data = &bucket->data[i * f->entry_size];
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memcpy(bucket_data, entry, f->entry_size);
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lru_update(bucket, i);
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*key_found = 1;
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*entry_ptr = (void *) bucket_data;
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return 0;
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}
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}
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/* Key is not present in the bucket */
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for (i = 0; i < 4; i++) {
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uint64_t bucket_signature = bucket->signature[i];
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uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
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if (bucket_signature == 0) {
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uint8_t *bucket_data = &bucket->data[i * f->entry_size];
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bucket->signature[i] = signature;
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keycpy(bucket_key, key, f->key_mask);
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memcpy(bucket_data, entry, f->entry_size);
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lru_update(bucket, i);
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*key_found = 0;
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*entry_ptr = (void *) bucket_data;
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return 0;
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}
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}
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/* Bucket full: replace LRU entry */
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pos = lru_pos(bucket);
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bucket->signature[pos] = signature;
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keycpy(&bucket->key[pos], key, f->key_mask);
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memcpy(&bucket->data[pos * f->entry_size], entry, f->entry_size);
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lru_update(bucket, pos);
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*key_found = 0;
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*entry_ptr = (void *) &bucket->data[pos * f->entry_size];
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return 0;
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}
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static int
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rte_table_hash_entry_delete_key16_lru(
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void *table,
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void *key,
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int *key_found,
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void *entry)
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{
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struct rte_table_hash *f = table;
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struct rte_bucket_4_16 *bucket;
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uint64_t signature;
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uint32_t bucket_index, i;
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signature = f->f_hash(key, f->key_mask, f->key_size, f->seed);
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bucket_index = signature & (f->n_buckets - 1);
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bucket = (struct rte_bucket_4_16 *)
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&f->memory[bucket_index * f->bucket_size];
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signature |= RTE_BUCKET_ENTRY_VALID;
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/* Key is present in the bucket */
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for (i = 0; i < 4; i++) {
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uint64_t bucket_signature = bucket->signature[i];
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uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
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if ((bucket_signature == signature) &&
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(keycmp(bucket_key, key, f->key_mask) == 0)) {
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uint8_t *bucket_data = &bucket->data[i * f->entry_size];
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bucket->signature[i] = 0;
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*key_found = 1;
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if (entry)
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memcpy(entry, bucket_data, f->entry_size);
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return 0;
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}
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}
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/* Key is not present in the bucket */
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*key_found = 0;
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return 0;
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}
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static void *
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rte_table_hash_create_key16_ext(void *params,
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int socket_id,
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uint32_t entry_size)
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{
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struct rte_table_hash_params *p = params;
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struct rte_table_hash *f;
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uint64_t bucket_size, stack_size, total_size;
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uint32_t n_buckets_ext, i;
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/* Check input parameters */
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if ((check_params_create(p) != 0) ||
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((sizeof(struct rte_table_hash) % RTE_CACHE_LINE_SIZE) != 0) ||
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((sizeof(struct rte_bucket_4_16) % 64) != 0))
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return NULL;
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/*
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* Table dimensioning
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*
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* Objective: Pick the number of bucket extensions (n_buckets_ext) so that
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* it is guaranteed that n_keys keys can be stored in the table at any time.
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*
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* The worst case scenario takes place when all the n_keys keys fall into
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* the same bucket. Actually, due to the KEYS_PER_BUCKET scheme, the worst
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* case takes place when (n_keys - KEYS_PER_BUCKET + 1) keys fall into the
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* same bucket, while the remaining (KEYS_PER_BUCKET - 1) keys each fall
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* into a different bucket. This case defeats the purpose of the hash table.
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* It indicates unsuitable f_hash or n_keys to n_buckets ratio.
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*
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* n_buckets_ext = n_keys / KEYS_PER_BUCKET + KEYS_PER_BUCKET - 1
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*/
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n_buckets_ext = p->n_keys / KEYS_PER_BUCKET + KEYS_PER_BUCKET - 1;
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/* Memory allocation */
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bucket_size = RTE_CACHE_LINE_ROUNDUP(sizeof(struct rte_bucket_4_16) +
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KEYS_PER_BUCKET * entry_size);
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stack_size = RTE_CACHE_LINE_ROUNDUP(n_buckets_ext * sizeof(uint32_t));
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total_size = sizeof(struct rte_table_hash) +
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(p->n_buckets + n_buckets_ext) * bucket_size + stack_size;
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if (total_size > SIZE_MAX) {
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RTE_LOG(ERR, TABLE, "%s: Cannot allocate %" PRIu64 " bytes "
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"for hash table %s\n",
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__func__, total_size, p->name);
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return NULL;
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}
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f = rte_zmalloc_socket(p->name,
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(size_t)total_size,
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RTE_CACHE_LINE_SIZE,
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socket_id);
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if (f == NULL) {
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RTE_LOG(ERR, TABLE, "%s: Cannot allocate %" PRIu64 " bytes "
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"for hash table %s\n",
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__func__, total_size, p->name);
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return NULL;
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}
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RTE_LOG(INFO, TABLE, "%s: Hash table %s memory footprint "
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"is %" PRIu64 " bytes\n",
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__func__, p->name, total_size);
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/* Memory initialization */
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f->n_buckets = p->n_buckets;
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f->key_size = KEY_SIZE;
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f->entry_size = entry_size;
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f->bucket_size = bucket_size;
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f->key_offset = p->key_offset;
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f->f_hash = p->f_hash;
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f->seed = p->seed;
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f->n_buckets_ext = n_buckets_ext;
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f->stack_pos = n_buckets_ext;
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f->stack = (uint32_t *)
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&f->memory[(p->n_buckets + n_buckets_ext) * f->bucket_size];
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if (p->key_mask != NULL) {
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f->key_mask[0] = (((uint64_t *)p->key_mask)[0]);
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f->key_mask[1] = (((uint64_t *)p->key_mask)[1]);
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} else {
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f->key_mask[0] = 0xFFFFFFFFFFFFFFFFLLU;
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f->key_mask[1] = 0xFFFFFFFFFFFFFFFFLLU;
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}
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for (i = 0; i < n_buckets_ext; i++)
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f->stack[i] = i;
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return f;
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}
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static int
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rte_table_hash_free_key16_ext(void *table)
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{
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struct rte_table_hash *f = table;
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/* Check input parameters */
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if (f == NULL) {
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RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
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return -EINVAL;
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}
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rte_free(f);
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return 0;
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}
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static int
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rte_table_hash_entry_add_key16_ext(
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void *table,
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void *key,
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void *entry,
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int *key_found,
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void **entry_ptr)
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{
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struct rte_table_hash *f = table;
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struct rte_bucket_4_16 *bucket0, *bucket, *bucket_prev;
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uint64_t signature;
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uint32_t bucket_index, i;
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signature = f->f_hash(key, f->key_mask, f->key_size, f->seed);
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bucket_index = signature & (f->n_buckets - 1);
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bucket0 = (struct rte_bucket_4_16 *)
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&f->memory[bucket_index * f->bucket_size];
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signature |= RTE_BUCKET_ENTRY_VALID;
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/* Key is present in the bucket */
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for (bucket = bucket0; bucket != NULL; bucket = bucket->next)
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for (i = 0; i < 4; i++) {
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uint64_t bucket_signature = bucket->signature[i];
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uint8_t *bucket_key = (uint8_t *) &bucket->key[i];
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if ((bucket_signature == signature) &&
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(keycmp(bucket_key, key, f->key_mask) == 0)) {
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uint8_t *bucket_data = &bucket->data[i *
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f->entry_size];
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memcpy(bucket_data, entry, f->entry_size);
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*key_found = 1;
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*entry_ptr = (void *) bucket_data;
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return 0;
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}
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}
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|
|
/* Key is not present in the bucket */
|
|
for (bucket_prev = NULL, bucket = bucket0; bucket != NULL;
|
|
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];
|
|
|
|
if (bucket_signature == 0) {
|
|
uint8_t *bucket_data = &bucket->data[i *
|
|
f->entry_size];
|
|
|
|
bucket->signature[i] = signature;
|
|
keycpy(bucket_key, key, f->key_mask);
|
|
memcpy(bucket_data, entry, f->entry_size);
|
|
*key_found = 0;
|
|
*entry_ptr = (void *) bucket_data;
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Bucket full: extend bucket */
|
|
if (f->stack_pos > 0) {
|
|
bucket_index = f->stack[--f->stack_pos];
|
|
|
|
bucket = (struct rte_bucket_4_16 *) &f->memory[(f->n_buckets +
|
|
bucket_index) * f->bucket_size];
|
|
bucket_prev->next = bucket;
|
|
bucket_prev->next_valid = 1;
|
|
|
|
bucket->signature[0] = signature;
|
|
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];
|
|
return 0;
|
|
}
|
|
|
|
return -ENOSPC;
|
|
}
|
|
|
|
static int
|
|
rte_table_hash_entry_delete_key16_ext(
|
|
void *table,
|
|
void *key,
|
|
int *key_found,
|
|
void *entry)
|
|
{
|
|
struct rte_table_hash *f = table;
|
|
struct rte_bucket_4_16 *bucket0, *bucket, *bucket_prev;
|
|
uint64_t signature;
|
|
uint32_t bucket_index, i;
|
|
|
|
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];
|
|
signature |= RTE_BUCKET_ENTRY_VALID;
|
|
|
|
/* Key is present in the bucket */
|
|
for (bucket_prev = NULL, bucket = bucket0; bucket != NULL;
|
|
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];
|
|
|
|
if ((bucket_signature == signature) &&
|
|
(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);
|
|
|
|
if ((bucket->signature[0] == 0) &&
|
|
(bucket->signature[1] == 0) &&
|
|
(bucket->signature[2] == 0) &&
|
|
(bucket->signature[3] == 0) &&
|
|
(bucket_prev != NULL)) {
|
|
bucket_prev->next = bucket->next;
|
|
bucket_prev->next_valid =
|
|
bucket->next_valid;
|
|
|
|
memset(bucket, 0,
|
|
sizeof(struct rte_bucket_4_16));
|
|
bucket_index = (((uint8_t *)bucket -
|
|
(uint8_t *)f->memory)/f->bucket_size) - f->n_buckets;
|
|
f->stack[f->stack_pos++] = bucket_index;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Key is not present in the bucket */
|
|
*key_found = 0;
|
|
return 0;
|
|
}
|
|
|
|
#define lookup_key16_cmp(key_in, bucket, pos, f) \
|
|
{ \
|
|
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] = k[0] ^ bucket->key[0][0]; \
|
|
xor[0][1] = k[1] ^ bucket->key[0][1]; \
|
|
\
|
|
xor[1][0] = k[0] ^ bucket->key[1][0]; \
|
|
xor[1][1] = k[1] ^ bucket->key[1][1]; \
|
|
\
|
|
xor[2][0] = k[0] ^ bucket->key[2][0]; \
|
|
xor[2][1] = k[1] ^ bucket->key[2][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]; \
|
|
or[2] = xor[2][0] | xor[2][1] | signature[2]; \
|
|
or[3] = xor[3][0] | xor[3][1] | signature[3]; \
|
|
\
|
|
pos = 4; \
|
|
if (or[0] == 0) \
|
|
pos = 0; \
|
|
if (or[1] == 0) \
|
|
pos = 1; \
|
|
if (or[2] == 0) \
|
|
pos = 2; \
|
|
if (or[3] == 0) \
|
|
pos = 3; \
|
|
}
|
|
|
|
#define lookup1_stage0(pkt0_index, mbuf0, pkts, pkts_mask, f) \
|
|
{ \
|
|
uint64_t pkt_mask; \
|
|
uint32_t key_offset = f->key_offset;\
|
|
\
|
|
pkt0_index = __builtin_ctzll(pkts_mask); \
|
|
pkt_mask = 1LLU << pkt0_index; \
|
|
pkts_mask &= ~pkt_mask; \
|
|
\
|
|
mbuf0 = pkts[pkt0_index]; \
|
|
rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf0, key_offset));\
|
|
}
|
|
|
|
#define lookup1_stage1(mbuf1, bucket1, f) \
|
|
{ \
|
|
uint64_t *key; \
|
|
uint64_t signature = 0; \
|
|
uint32_t bucket_index; \
|
|
\
|
|
key = RTE_MBUF_METADATA_UINT64_PTR(mbuf1, f->key_offset);\
|
|
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 *) \
|
|
&f->memory[bucket_index * f->bucket_size]; \
|
|
rte_prefetch0(bucket1); \
|
|
rte_prefetch0((void *)(((uintptr_t) bucket1) + RTE_CACHE_LINE_SIZE));\
|
|
}
|
|
|
|
#define lookup1_stage2_lru(pkt2_index, mbuf2, bucket2, \
|
|
pkts_mask_out, entries, f) \
|
|
{ \
|
|
void *a; \
|
|
uint64_t pkt_mask; \
|
|
uint64_t *key; \
|
|
uint32_t pos; \
|
|
\
|
|
key = RTE_MBUF_METADATA_UINT64_PTR(mbuf2, f->key_offset);\
|
|
lookup_key16_cmp(key, bucket2, pos, f); \
|
|
\
|
|
pkt_mask = (bucket2->signature[pos] & 1LLU) << pkt2_index;\
|
|
pkts_mask_out |= pkt_mask; \
|
|
\
|
|
a = (void *) &bucket2->data[pos * f->entry_size]; \
|
|
rte_prefetch0(a); \
|
|
entries[pkt2_index] = a; \
|
|
lru_update(bucket2, pos); \
|
|
}
|
|
|
|
#define lookup1_stage2_ext(pkt2_index, mbuf2, bucket2, pkts_mask_out, entries, \
|
|
buckets_mask, buckets, keys, f) \
|
|
{ \
|
|
struct rte_bucket_4_16 *bucket_next; \
|
|
void *a; \
|
|
uint64_t pkt_mask, bucket_mask; \
|
|
uint64_t *key; \
|
|
uint32_t pos; \
|
|
\
|
|
key = RTE_MBUF_METADATA_UINT64_PTR(mbuf2, f->key_offset);\
|
|
lookup_key16_cmp(key, bucket2, pos, f); \
|
|
\
|
|
pkt_mask = (bucket2->signature[pos] & 1LLU) << pkt2_index;\
|
|
pkts_mask_out |= pkt_mask; \
|
|
\
|
|
a = (void *) &bucket2->data[pos * f->entry_size]; \
|
|
rte_prefetch0(a); \
|
|
entries[pkt2_index] = a; \
|
|
\
|
|
bucket_mask = (~pkt_mask) & (bucket2->next_valid << pkt2_index);\
|
|
buckets_mask |= bucket_mask; \
|
|
bucket_next = bucket2->next; \
|
|
buckets[pkt2_index] = bucket_next; \
|
|
keys[pkt2_index] = key; \
|
|
}
|
|
|
|
#define lookup_grinder(pkt_index, buckets, keys, pkts_mask_out, entries,\
|
|
buckets_mask, f) \
|
|
{ \
|
|
struct rte_bucket_4_16 *bucket, *bucket_next; \
|
|
void *a; \
|
|
uint64_t pkt_mask, bucket_mask; \
|
|
uint64_t *key; \
|
|
uint32_t pos; \
|
|
\
|
|
bucket = buckets[pkt_index]; \
|
|
key = keys[pkt_index]; \
|
|
lookup_key16_cmp(key, bucket, pos, f); \
|
|
\
|
|
pkt_mask = (bucket->signature[pos] & 1LLU) << pkt_index;\
|
|
pkts_mask_out |= pkt_mask; \
|
|
\
|
|
a = (void *) &bucket->data[pos * f->entry_size]; \
|
|
rte_prefetch0(a); \
|
|
entries[pkt_index] = a; \
|
|
\
|
|
bucket_mask = (~pkt_mask) & (bucket->next_valid << pkt_index);\
|
|
buckets_mask |= bucket_mask; \
|
|
bucket_next = bucket->next; \
|
|
rte_prefetch0(bucket_next); \
|
|
rte_prefetch0((void *)(((uintptr_t) bucket_next) + RTE_CACHE_LINE_SIZE));\
|
|
buckets[pkt_index] = bucket_next; \
|
|
keys[pkt_index] = key; \
|
|
}
|
|
|
|
#define lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01,\
|
|
pkts, pkts_mask, f) \
|
|
{ \
|
|
uint64_t pkt00_mask, pkt01_mask; \
|
|
uint32_t key_offset = f->key_offset; \
|
|
\
|
|
pkt00_index = __builtin_ctzll(pkts_mask); \
|
|
pkt00_mask = 1LLU << pkt00_index; \
|
|
pkts_mask &= ~pkt00_mask; \
|
|
\
|
|
mbuf00 = pkts[pkt00_index]; \
|
|
rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf00, key_offset));\
|
|
\
|
|
pkt01_index = __builtin_ctzll(pkts_mask); \
|
|
pkt01_mask = 1LLU << pkt01_index; \
|
|
pkts_mask &= ~pkt01_mask; \
|
|
\
|
|
mbuf01 = pkts[pkt01_index]; \
|
|
rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf01, key_offset));\
|
|
}
|
|
|
|
#define lookup2_stage0_with_odd_support(pkt00_index, pkt01_index,\
|
|
mbuf00, mbuf01, pkts, pkts_mask, f) \
|
|
{ \
|
|
uint64_t pkt00_mask, pkt01_mask; \
|
|
uint32_t key_offset = f->key_offset; \
|
|
\
|
|
pkt00_index = __builtin_ctzll(pkts_mask); \
|
|
pkt00_mask = 1LLU << pkt00_index; \
|
|
pkts_mask &= ~pkt00_mask; \
|
|
\
|
|
mbuf00 = pkts[pkt00_index]; \
|
|
rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf00, key_offset)); \
|
|
\
|
|
pkt01_index = __builtin_ctzll(pkts_mask); \
|
|
if (pkts_mask == 0) \
|
|
pkt01_index = pkt00_index; \
|
|
pkt01_mask = 1LLU << pkt01_index; \
|
|
pkts_mask &= ~pkt01_mask; \
|
|
\
|
|
mbuf01 = pkts[pkt01_index]; \
|
|
rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf01, key_offset)); \
|
|
}
|
|
|
|
#define lookup2_stage1(mbuf10, mbuf11, bucket10, bucket11, f) \
|
|
{ \
|
|
uint64_t *key10, *key11; \
|
|
uint64_t signature10, signature11; \
|
|
uint32_t bucket10_index, bucket11_index; \
|
|
\
|
|
key10 = RTE_MBUF_METADATA_UINT64_PTR(mbuf10, f->key_offset);\
|
|
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(bucket10); \
|
|
rte_prefetch0((void *)(((uintptr_t) bucket10) + RTE_CACHE_LINE_SIZE));\
|
|
\
|
|
key11 = RTE_MBUF_METADATA_UINT64_PTR(mbuf11, f->key_offset);\
|
|
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]; \
|
|
rte_prefetch0(bucket11); \
|
|
rte_prefetch0((void *)(((uintptr_t) bucket11) + RTE_CACHE_LINE_SIZE));\
|
|
}
|
|
|
|
#define lookup2_stage2_lru(pkt20_index, pkt21_index, mbuf20, mbuf21,\
|
|
bucket20, bucket21, pkts_mask_out, entries, f) \
|
|
{ \
|
|
void *a20, *a21; \
|
|
uint64_t pkt20_mask, pkt21_mask; \
|
|
uint64_t *key20, *key21; \
|
|
uint32_t pos20, pos21; \
|
|
\
|
|
key20 = RTE_MBUF_METADATA_UINT64_PTR(mbuf20, f->key_offset);\
|
|
key21 = RTE_MBUF_METADATA_UINT64_PTR(mbuf21, f->key_offset);\
|
|
\
|
|
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;\
|
|
pkts_mask_out |= pkt20_mask | pkt21_mask; \
|
|
\
|
|
a20 = (void *) &bucket20->data[pos20 * f->entry_size]; \
|
|
a21 = (void *) &bucket21->data[pos21 * f->entry_size]; \
|
|
rte_prefetch0(a20); \
|
|
rte_prefetch0(a21); \
|
|
entries[pkt20_index] = a20; \
|
|
entries[pkt21_index] = a21; \
|
|
lru_update(bucket20, pos20); \
|
|
lru_update(bucket21, pos21); \
|
|
}
|
|
|
|
#define lookup2_stage2_ext(pkt20_index, pkt21_index, mbuf20, mbuf21, bucket20, \
|
|
bucket21, pkts_mask_out, entries, buckets_mask, buckets, keys, f) \
|
|
{ \
|
|
struct rte_bucket_4_16 *bucket20_next, *bucket21_next; \
|
|
void *a20, *a21; \
|
|
uint64_t pkt20_mask, pkt21_mask, bucket20_mask, bucket21_mask;\
|
|
uint64_t *key20, *key21; \
|
|
uint32_t pos20, pos21; \
|
|
\
|
|
key20 = RTE_MBUF_METADATA_UINT64_PTR(mbuf20, f->key_offset);\
|
|
key21 = RTE_MBUF_METADATA_UINT64_PTR(mbuf21, f->key_offset);\
|
|
\
|
|
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;\
|
|
pkts_mask_out |= pkt20_mask | pkt21_mask; \
|
|
\
|
|
a20 = (void *) &bucket20->data[pos20 * f->entry_size]; \
|
|
a21 = (void *) &bucket21->data[pos21 * f->entry_size]; \
|
|
rte_prefetch0(a20); \
|
|
rte_prefetch0(a21); \
|
|
entries[pkt20_index] = a20; \
|
|
entries[pkt21_index] = a21; \
|
|
\
|
|
bucket20_mask = (~pkt20_mask) & (bucket20->next_valid << pkt20_index);\
|
|
bucket21_mask = (~pkt21_mask) & (bucket21->next_valid << pkt21_index);\
|
|
buckets_mask |= bucket20_mask | bucket21_mask; \
|
|
bucket20_next = bucket20->next; \
|
|
bucket21_next = bucket21->next; \
|
|
buckets[pkt20_index] = bucket20_next; \
|
|
buckets[pkt21_index] = bucket21_next; \
|
|
keys[pkt20_index] = key20; \
|
|
keys[pkt21_index] = key21; \
|
|
}
|
|
|
|
static int
|
|
rte_table_hash_lookup_key16_lru(
|
|
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(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(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(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(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;
|
|
} /* lookup LRU */
|
|
|
|
static int
|
|
rte_table_hash_lookup_key16_ext(
|
|
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(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(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(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(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;
|
|
} /* lookup EXT */
|
|
|
|
static int
|
|
rte_table_hash_key16_stats_read(void *table, struct rte_table_stats *stats, int clear)
|
|
{
|
|
struct rte_table_hash *t = table;
|
|
|
|
if (stats != NULL)
|
|
memcpy(stats, &t->stats, sizeof(t->stats));
|
|
|
|
if (clear)
|
|
memset(&t->stats, 0, sizeof(t->stats));
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct rte_table_ops rte_table_hash_key16_lru_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_add_bulk = NULL,
|
|
.f_delete_bulk = NULL,
|
|
.f_lookup = rte_table_hash_lookup_key16_lru,
|
|
.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_add = rte_table_hash_entry_add_key16_ext,
|
|
.f_delete = rte_table_hash_entry_delete_key16_ext,
|
|
.f_add_bulk = NULL,
|
|
.f_delete_bulk = NULL,
|
|
.f_lookup = rte_table_hash_lookup_key16_ext,
|
|
.f_stats = rte_table_hash_key16_stats_read,
|
|
};
|