-/**
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 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:
- *
- * * 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
#include <stdint.h>
#include <sys/queue.h>
#include <rte_memory.h>
-#include <rte_memzone.h>
-#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_eal_memconfig.h>
#include <rte_malloc.h>
#include "rte_fbk_hash.h"
-TAILQ_HEAD(rte_fbk_hash_list, rte_fbk_hash_table);
+TAILQ_HEAD(rte_fbk_hash_list, rte_tailq_entry);
+
+static struct rte_tailq_elem rte_fbk_hash_tailq = {
+ .name = "RTE_FBK_HASH",
+};
+EAL_REGISTER_TAILQ(rte_fbk_hash_tailq)
/**
* Performs a lookup for an existing hash table, and returns a pointer to
struct rte_fbk_hash_table *
rte_fbk_hash_find_existing(const char *name)
{
- struct rte_fbk_hash_table *h;
+ struct rte_fbk_hash_table *h = NULL;
+ struct rte_tailq_entry *te;
struct rte_fbk_hash_list *fbk_hash_list;
- /* check that we have an initialised tail queue */
- if ((fbk_hash_list =
- RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_FBK_HASH, rte_fbk_hash_list)) == NULL) {
- rte_errno = E_RTE_NO_TAILQ;
- return NULL;
- }
+ fbk_hash_list = RTE_TAILQ_CAST(rte_fbk_hash_tailq.head,
+ rte_fbk_hash_list);
rte_rwlock_read_lock(RTE_EAL_TAILQ_RWLOCK);
- TAILQ_FOREACH(h, fbk_hash_list, next) {
+ TAILQ_FOREACH(te, fbk_hash_list, next) {
+ h = (struct rte_fbk_hash_table *) te->data;
if (strncmp(name, h->name, RTE_FBK_HASH_NAMESIZE) == 0)
break;
}
rte_rwlock_read_unlock(RTE_EAL_TAILQ_RWLOCK);
- if (h == NULL)
+ if (te == NULL) {
rte_errno = ENOENT;
+ return NULL;
+ }
return h;
}
rte_fbk_hash_create(const struct rte_fbk_hash_params *params)
{
struct rte_fbk_hash_table *ht = NULL;
+ struct rte_tailq_entry *te;
char hash_name[RTE_FBK_HASH_NAMESIZE];
const uint32_t mem_size =
sizeof(*ht) + (sizeof(ht->t[0]) * params->entries);
uint32_t i;
struct rte_fbk_hash_list *fbk_hash_list;
+ rte_fbk_hash_fn default_hash_func = (rte_fbk_hash_fn)rte_jhash_1word;
- /* check that we have an initialised tail queue */
- if ((fbk_hash_list =
- RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_FBK_HASH, rte_fbk_hash_list)) == NULL) {
- rte_errno = E_RTE_NO_TAILQ;
- return NULL;
- }
+ fbk_hash_list = RTE_TAILQ_CAST(rte_fbk_hash_tailq.head,
+ rte_fbk_hash_list);
/* Error checking of parameters. */
if ((!rte_is_power_of_2(params->entries)) ||
return NULL;
}
- rte_snprintf(hash_name, sizeof(hash_name), "FBK_%s", params->name);
+ snprintf(hash_name, sizeof(hash_name), "FBK_%s", params->name);
rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
/* guarantee there's no existing */
- TAILQ_FOREACH(ht, fbk_hash_list, next) {
+ TAILQ_FOREACH(te, fbk_hash_list, next) {
+ ht = (struct rte_fbk_hash_table *) te->data;
if (strncmp(params->name, ht->name, RTE_FBK_HASH_NAMESIZE) == 0)
break;
}
- if (ht != NULL)
+ ht = NULL;
+ if (te != NULL) {
+ rte_errno = EEXIST;
+ goto exit;
+ }
+
+ te = rte_zmalloc("FBK_HASH_TAILQ_ENTRY", sizeof(*te), 0);
+ if (te == NULL) {
+ RTE_LOG(ERR, HASH, "Failed to allocate tailq entry\n");
goto exit;
+ }
/* Allocate memory for table. */
- ht = (struct rte_fbk_hash_table *)rte_malloc_socket(hash_name, mem_size,
+ ht = rte_zmalloc_socket(hash_name, mem_size,
0, params->socket_id);
- if (ht == NULL)
+ if (ht == NULL) {
+ RTE_LOG(ERR, HASH, "Failed to allocate fbk hash table\n");
+ rte_free(te);
goto exit;
+ }
- memset(ht, 0, mem_size);
+ /* Default hash function */
+#if defined(RTE_ARCH_X86)
+ default_hash_func = (rte_fbk_hash_fn)rte_hash_crc_4byte;
+#elif defined(RTE_ARCH_ARM64)
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_CRC32))
+ default_hash_func = (rte_fbk_hash_fn)rte_hash_crc_4byte;
+#endif
/* Set up hash table context. */
- rte_snprintf(ht->name, sizeof(ht->name), "%s", params->name);
+ snprintf(ht->name, sizeof(ht->name), "%s", params->name);
ht->entries = params->entries;
ht->entries_per_bucket = params->entries_per_bucket;
ht->used_entries = 0;
ht->init_val = params->init_val;
}
else {
- ht->hash_func = RTE_FBK_HASH_FUNC_DEFAULT;
+ ht->hash_func = default_hash_func;
ht->init_val = RTE_FBK_HASH_INIT_VAL_DEFAULT;
}
- TAILQ_INSERT_TAIL(fbk_hash_list, ht, next);
+ te->data = (void *) ht;
+
+ TAILQ_INSERT_TAIL(fbk_hash_list, te, next);
exit:
rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
void
rte_fbk_hash_free(struct rte_fbk_hash_table *ht)
{
+ struct rte_tailq_entry *te;
+ struct rte_fbk_hash_list *fbk_hash_list;
+
if (ht == NULL)
return;
- RTE_EAL_TAILQ_REMOVE(RTE_TAILQ_FBK_HASH, rte_fbk_hash_list, ht);
+ fbk_hash_list = RTE_TAILQ_CAST(rte_fbk_hash_tailq.head,
+ rte_fbk_hash_list);
+
+ rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
+
+ /* find out tailq entry */
+ TAILQ_FOREACH(te, fbk_hash_list, next) {
+ if (te->data == (void *) ht)
+ break;
+ }
+
+ if (te == NULL) {
+ rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
+ return;
+ }
+
+ TAILQ_REMOVE(fbk_hash_list, te, next);
+
+ rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
+
rte_free(ht);
+ rte_free(te);
}
-
git.droids-corp.org / dpdk.git / blobdiff