2017-12-19 15:49:03 +00:00
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/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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2014-06-04 18:08:32 +00:00
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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_mbuf.h>
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2014-11-07 17:28:09 +00:00
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#include <rte_memory.h>
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2014-06-04 18:08:32 +00:00
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#include <rte_malloc.h>
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#include <rte_log.h>
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#include "rte_table_array.h"
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2015-06-19 10:28:36 +00:00
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#ifdef RTE_TABLE_STATS_COLLECT
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#define RTE_TABLE_ARRAY_STATS_PKTS_IN_ADD(table, val) \
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table->stats.n_pkts_in += val
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#define RTE_TABLE_ARRAY_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_ARRAY_STATS_PKTS_IN_ADD(table, val)
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#define RTE_TABLE_ARRAY_STATS_PKTS_LOOKUP_MISS(table, val)
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#endif
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2014-06-04 18:08:32 +00:00
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struct rte_table_array {
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2015-06-19 10:28:36 +00:00
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struct rte_table_stats stats;
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2014-06-04 18:08:32 +00:00
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/* Input parameters */
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uint32_t entry_size;
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uint32_t n_entries;
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uint32_t offset;
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/* Internal fields */
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uint32_t entry_pos_mask;
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/* Internal table */
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uint8_t array[0] __rte_cache_aligned;
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} __rte_cache_aligned;
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static void *
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rte_table_array_create(void *params, int socket_id, uint32_t entry_size)
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{
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2017-04-07 17:44:47 +00:00
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struct rte_table_array_params *p = params;
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2014-06-04 18:08:32 +00:00
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struct rte_table_array *t;
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uint32_t total_cl_size, total_size;
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/* Check input parameters */
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if ((p == NULL) ||
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(p->n_entries == 0) ||
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2015-06-05 14:55:10 +00:00
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(!rte_is_power_of_2(p->n_entries)))
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2014-06-04 18:08:32 +00:00
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return NULL;
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/* Memory allocation */
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total_cl_size = (sizeof(struct rte_table_array) +
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2014-11-19 12:26:06 +00:00
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RTE_CACHE_LINE_SIZE) / RTE_CACHE_LINE_SIZE;
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2014-06-04 18:08:32 +00:00
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total_cl_size += (p->n_entries * entry_size +
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2014-11-19 12:26:06 +00:00
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RTE_CACHE_LINE_SIZE) / RTE_CACHE_LINE_SIZE;
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total_size = total_cl_size * RTE_CACHE_LINE_SIZE;
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t = rte_zmalloc_socket("TABLE", total_size, RTE_CACHE_LINE_SIZE, socket_id);
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2014-06-04 18:08:32 +00:00
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if (t == NULL) {
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RTE_LOG(ERR, TABLE,
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"%s: Cannot allocate %u bytes for array table\n",
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__func__, total_size);
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return NULL;
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}
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/* Memory initialization */
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t->entry_size = entry_size;
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t->n_entries = p->n_entries;
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t->offset = p->offset;
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t->entry_pos_mask = t->n_entries - 1;
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return t;
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}
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static int
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rte_table_array_free(void *table)
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{
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2017-04-07 17:44:47 +00:00
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struct rte_table_array *t = table;
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2014-06-04 18:08:32 +00:00
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/* Check input parameters */
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if (t == 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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/* Free previously allocated resources */
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rte_free(t);
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return 0;
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}
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static int
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rte_table_array_entry_add(
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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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2017-04-07 17:44:47 +00:00
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struct rte_table_array *t = table;
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struct rte_table_array_key *k = key;
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2014-06-04 18:08:32 +00:00
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uint8_t *table_entry;
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/* Check input parameters */
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if (table == 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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if (key == NULL) {
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RTE_LOG(ERR, TABLE, "%s: key parameter is NULL\n", __func__);
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return -EINVAL;
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}
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if (entry == NULL) {
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RTE_LOG(ERR, TABLE, "%s: entry parameter is NULL\n", __func__);
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return -EINVAL;
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}
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if (key_found == NULL) {
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RTE_LOG(ERR, TABLE, "%s: key_found parameter is NULL\n",
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__func__);
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return -EINVAL;
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}
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if (entry_ptr == NULL) {
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RTE_LOG(ERR, TABLE, "%s: entry_ptr parameter is NULL\n",
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__func__);
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return -EINVAL;
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}
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table_entry = &t->array[k->pos * t->entry_size];
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memcpy(table_entry, entry, t->entry_size);
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*key_found = 1;
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*entry_ptr = (void *) table_entry;
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return 0;
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}
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static int
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rte_table_array_lookup(
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void *table,
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struct rte_mbuf **pkts,
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uint64_t pkts_mask,
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uint64_t *lookup_hit_mask,
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void **entries)
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{
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struct rte_table_array *t = (struct rte_table_array *) table;
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2015-06-19 10:28:36 +00:00
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__rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
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RTE_TABLE_ARRAY_STATS_PKTS_IN_ADD(t, n_pkts_in);
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2014-12-04 14:24:12 +00:00
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*lookup_hit_mask = pkts_mask;
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2014-06-04 18:08:32 +00:00
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if ((pkts_mask & (pkts_mask + 1)) == 0) {
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uint64_t n_pkts = __builtin_popcountll(pkts_mask);
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uint32_t i;
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for (i = 0; i < n_pkts; i++) {
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struct rte_mbuf *pkt = pkts[i];
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uint32_t entry_pos = RTE_MBUF_METADATA_UINT32(pkt,
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t->offset) & t->entry_pos_mask;
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entries[i] = (void *) &t->array[entry_pos *
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t->entry_size];
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}
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} else {
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for ( ; pkts_mask; ) {
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uint32_t pkt_index = __builtin_ctzll(pkts_mask);
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uint64_t pkt_mask = 1LLU << pkt_index;
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struct rte_mbuf *pkt = pkts[pkt_index];
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uint32_t entry_pos = RTE_MBUF_METADATA_UINT32(pkt,
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t->offset) & t->entry_pos_mask;
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entries[pkt_index] = (void *) &t->array[entry_pos *
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t->entry_size];
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pkts_mask &= ~pkt_mask;
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}
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}
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return 0;
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}
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2015-06-19 10:28:36 +00:00
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static int
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rte_table_array_stats_read(void *table, struct rte_table_stats *stats, int clear)
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{
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2017-04-07 17:44:47 +00:00
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struct rte_table_array *array = table;
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2015-06-19 10:28:36 +00:00
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if (stats != NULL)
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memcpy(stats, &array->stats, sizeof(array->stats));
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if (clear)
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memset(&array->stats, 0, sizeof(array->stats));
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return 0;
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}
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2014-06-04 18:08:32 +00:00
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struct rte_table_ops rte_table_array_ops = {
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.f_create = rte_table_array_create,
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.f_free = rte_table_array_free,
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.f_add = rte_table_array_entry_add,
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.f_delete = NULL,
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2015-10-20 13:01:23 +00:00
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.f_add_bulk = NULL,
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.f_delete_bulk = NULL,
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2014-06-04 18:08:32 +00:00
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.f_lookup = rte_table_array_lookup,
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2015-06-19 10:28:36 +00:00
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.f_stats = rte_table_array_stats_read,
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2014-06-04 18:08:32 +00:00
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};
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