/*-
* BSD LICENSE
*
- * Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
+ * Copyright(c) 2010-2013 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
+ * 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
+ * * 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
+ * * 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
+ * * 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
+ * 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.
- *
- * version: DPDK.L.1.2.3-3
*/
#include <string.h>
#include <rte_malloc.h>
#include <rte_tailq.h>
#include <rte_eal.h>
+#include <rte_eal_memconfig.h>
#include <rte_per_lcore.h>
#include <rte_errno.h>
#include <rte_string_fns.h>
#include <rte_cpuflags.h>
#include <rte_log.h>
+#include <rte_rwlock.h>
+#include <rte_spinlock.h>
#include "rte_hash.h"
-#include "rte_jhash.h"
-#include "rte_hash_crc.h"
TAILQ_HEAD(rte_hash_list, rte_hash);
-/* global list of hashes (used for debug/dump) */
-static struct rte_hash_list *hash_list;
-
-/* macro to prevent duplication of list creation check code */
-#define CHECK_HASH_LIST_CREATED() do { \
- if (hash_list == NULL) \
- if ((hash_list = RTE_TAILQ_RESERVE("RTE_HASH", rte_hash_list)) == NULL){ \
- rte_errno = E_RTE_NO_TAILQ; \
- return NULL; \
- } \
-} while (0)
-
/* Macro to enable/disable run-time checking of function parameters */
#if defined(RTE_LIBRTE_HASH_DEBUG)
#define RETURN_IF_TRUE(cond, retval) do { \
#endif
/* Hash function used if none is specified */
+#ifdef RTE_MACHINE_CPUFLAG_SSE4_2
+#include <rte_hash_crc.h>
#define DEFAULT_HASH_FUNC rte_hash_crc
+#else
+#include <rte_jhash.h>
+#define DEFAULT_HASH_FUNC rte_jhash
+#endif
/* Signature bucket size is a multiple of this value */
#define SIG_BUCKET_ALIGNMENT 16
rte_hash_find_existing(const char *name)
{
struct rte_hash *h;
+ struct rte_hash_list *hash_list;
/* check that we have an initialised tail queue */
- CHECK_HASH_LIST_CREATED();
+ if ((hash_list = RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_HASH, rte_hash_list)) == NULL) {
+ rte_errno = E_RTE_NO_TAILQ;
+ return NULL;
+ }
+ rte_rwlock_read_lock(RTE_EAL_TAILQ_RWLOCK);
TAILQ_FOREACH(h, hash_list, next) {
if (strncmp(name, h->name, RTE_HASH_NAMESIZE) == 0)
break;
}
+ rte_rwlock_read_unlock(RTE_EAL_TAILQ_RWLOCK);
+
if (h == NULL)
rte_errno = ENOENT;
return h;
uint32_t num_buckets, sig_bucket_size, key_size,
hash_tbl_size, sig_tbl_size, key_tbl_size, mem_size;
char hash_name[RTE_HASH_NAMESIZE];
-
- if (rte_eal_process_type() == RTE_PROC_SECONDARY){
- rte_errno = E_RTE_SECONDARY;
- return NULL;
- }
+ struct rte_hash_list *hash_list;
/* check that we have an initialised tail queue */
- CHECK_HASH_LIST_CREATED();
+ if ((hash_list =
+ RTE_TAILQ_LOOKUP_BY_IDX(RTE_TAILQ_HASH, rte_hash_list)) == NULL) {
+ rte_errno = E_RTE_NO_TAILQ;
+ return NULL;
+ }
/* Check for valid parameters */
if ((params == NULL) ||
CACHE_LINE_SIZE);
key_tbl_size = align_size(num_buckets * key_size *
params->bucket_entries, CACHE_LINE_SIZE);
-
+
/* Total memory required for hash context */
mem_size = hash_tbl_size + sig_tbl_size + key_tbl_size;
- /* Allocate as a memzone, or in normal memory space */
-#if defined(RTE_LIBRTE_HASH_USE_MEMZONE)
- const struct rte_memzone *mz;
- mz = rte_memzone_reserve(hash_name, mem_size, params->socket_id, 0);
- if (mz == NULL) {
- RTE_LOG(ERR, HASH, "memzone reservation failed\n");
- return NULL;
+ rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
+
+ /* guarantee there's no existing */
+ TAILQ_FOREACH(h, hash_list, next) {
+ if (strncmp(params->name, h->name, RTE_HASH_NAMESIZE) == 0)
+ break;
}
- memset(mz->addr, 0, mem_size);
- h = (struct rte_hash *)mz->addr;
-#else
- h = (struct rte_hash *)rte_zmalloc(hash_name, mem_size,
- CACHE_LINE_SIZE);
+ if (h != NULL)
+ goto exit;
+
+ h = (struct rte_hash *)rte_zmalloc_socket(hash_name, mem_size,
+ CACHE_LINE_SIZE, params->socket_id);
if (h == NULL) {
RTE_LOG(ERR, HASH, "memory allocation failed\n");
- return NULL;
+ goto exit;
}
-#endif
/* Setup hash context */
rte_snprintf(h->name, sizeof(h->name), "%s", params->name);
h->hash_func = (params->hash_func == NULL) ?
DEFAULT_HASH_FUNC : params->hash_func;
- if (h->hash_func == rte_hash_crc &&
- !rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_2)) {
- RTE_LOG(WARNING, HASH, "CRC32 instruction requires SSE4.2, "
- "which is not supported on this system. "
- "Falling back to software hash\n.");
- h->hash_func = rte_jhash;
- }
-
TAILQ_INSERT_TAIL(hash_list, h, next);
+
+exit:
+ rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
+
return h;
}
{
if (h == NULL)
return;
-#if !defined(RTE_LIBRTE_HASH_USE_MEMZONE)
- TAILQ_REMOVE(hash_list, h, next);
+
+ RTE_EAL_TAILQ_REMOVE(RTE_TAILQ_HASH, rte_hash_list, h);
rte_free(h);
-#endif
- /* No way to deallocate memzones */
- return;
}
-int32_t
-rte_hash_add_key(const struct rte_hash *h, const void *key)
+static inline int32_t
+__rte_hash_add_key_with_hash(const struct rte_hash *h,
+ const void *key, hash_sig_t sig)
{
- hash_sig_t sig, *sig_bucket;
+ hash_sig_t *sig_bucket;
uint8_t *key_bucket;
uint32_t bucket_index, i;
int32_t pos;
- RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
-
/* Get the hash signature and bucket index */
- sig = h->hash_func(key, h->key_len, h->hash_func_init_val) | h->sig_msb;
+ sig |= h->sig_msb;
bucket_index = sig & h->bucket_bitmask;
sig_bucket = get_sig_tbl_bucket(h, bucket_index);
key_bucket = get_key_tbl_bucket(h, bucket_index);
}
int32_t
-rte_hash_del_key(const struct rte_hash *h, const void *key)
+rte_hash_add_key_with_hash(const struct rte_hash *h,
+ const void *key, hash_sig_t sig)
{
- hash_sig_t sig, *sig_bucket;
- uint8_t *key_bucket;
- uint32_t bucket_index, i;
+ RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+ return __rte_hash_add_key_with_hash(h, key, sig);
+}
+int32_t
+rte_hash_add_key(const struct rte_hash *h, const void *key)
+{
RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+ return __rte_hash_add_key_with_hash(h, key, rte_hash_hash(h, key));
+}
+
+static inline int32_t
+__rte_hash_del_key_with_hash(const struct rte_hash *h,
+ const void *key, hash_sig_t sig)
+{
+ hash_sig_t *sig_bucket;
+ uint8_t *key_bucket;
+ uint32_t bucket_index, i;
/* Get the hash signature and bucket index */
- sig = h->hash_func(key, h->key_len, h->hash_func_init_val) | h->sig_msb;
+ sig = sig | h->sig_msb;
bucket_index = sig & h->bucket_bitmask;
sig_bucket = get_sig_tbl_bucket(h, bucket_index);
key_bucket = get_key_tbl_bucket(h, bucket_index);
}
int32_t
-rte_hash_lookup(const struct rte_hash *h, const void *key)
+rte_hash_del_key_with_hash(const struct rte_hash *h,
+ const void *key, hash_sig_t sig)
{
- hash_sig_t sig, *sig_bucket;
- uint8_t *key_bucket;
- uint32_t bucket_index, i;
+ RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+ return __rte_hash_del_key_with_hash(h, key, sig);
+}
+int32_t
+rte_hash_del_key(const struct rte_hash *h, const void *key)
+{
RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+ return __rte_hash_del_key_with_hash(h, key, rte_hash_hash(h, key));
+}
+
+static inline int32_t
+__rte_hash_lookup_with_hash(const struct rte_hash *h,
+ const void *key, hash_sig_t sig)
+{
+ hash_sig_t *sig_bucket;
+ uint8_t *key_bucket;
+ uint32_t bucket_index, i;
/* Get the hash signature and bucket index */
- sig = h->hash_func(key, h->key_len, h->hash_func_init_val) | h->sig_msb;
+ sig |= h->sig_msb;
bucket_index = sig & h->bucket_bitmask;
sig_bucket = get_sig_tbl_bucket(h, bucket_index);
key_bucket = get_key_tbl_bucket(h, bucket_index);
return -ENOENT;
}
+int32_t
+rte_hash_lookup_with_hash(const struct rte_hash *h,
+ const void *key, hash_sig_t sig)
+{
+ RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+ return __rte_hash_lookup_with_hash(h, key, sig);
+}
+
+int32_t
+rte_hash_lookup(const struct rte_hash *h, const void *key)
+{
+ RETURN_IF_TRUE(((h == NULL) || (key == NULL)), -EINVAL);
+ return __rte_hash_lookup_with_hash(h, key, rte_hash_hash(h, key));
+}
+
int
-rte_hash_lookup_multi(const struct rte_hash *h, const void **keys,
+rte_hash_lookup_bulk(const struct rte_hash *h, const void **keys,
uint32_t num_keys, int32_t *positions)
{
uint32_t i, j, bucket_index;
- hash_sig_t sigs[RTE_HASH_LOOKUP_MULTI_MAX];
+ hash_sig_t sigs[RTE_HASH_LOOKUP_BULK_MAX];
RETURN_IF_TRUE(((h == NULL) || (keys == NULL) || (num_keys == 0) ||
- (num_keys > RTE_HASH_LOOKUP_MULTI_MAX) ||
+ (num_keys > RTE_HASH_LOOKUP_BULK_MAX) ||
(positions == NULL)), -EINVAL);
/* Get the hash signature and bucket index */
git.droids-corp.org / dpdk.git / blobdiff