bus/pci: use SPDX tags in 6WIND copyrighted files

[dpdk.git] / lib / librte_hash / rte_cuckoo_hash.h

diff --git a/lib/librte_hash/rte_cuckoo_hash.h b/lib/librte_hash/rte_cuckoo_hash.h
index 6549731..7a54e55 100644 (file)
--- a/lib/librte_hash/rte_cuckoo_hash.h
+++ b/lib/librte_hash/rte_cuckoo_hash.h
@@ -1,34 +1,5 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2016 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) 2016 Intel Corporation
  */
 
 /* rte_cuckoo_hash.h
@@ -57,14 +28,8 @@
 #define RETURN_IF_TRUE(cond, retval)
 #endif
 
-/* Hash function used if none is specified */
-#if defined(RTE_MACHINE_CPUFLAG_SSE4_2) || defined(RTE_MACHINE_CPUFLAG_CRC32)
 #include <rte_hash_crc.h>
-#define DEFAULT_HASH_FUNC       rte_hash_crc
-#else
 #include <rte_jhash.h>
-#define DEFAULT_HASH_FUNC       rte_jhash
-#endif
 
 #if defined(RTE_ARCH_X86) || defined(RTE_ARCH_ARM64)
 /*
@@ -130,7 +95,7 @@ enum add_key_case {
 };
 
 /** Number of items per bucket. */
-#define RTE_HASH_BUCKET_ENTRIES                4
+#define RTE_HASH_BUCKET_ENTRIES                8
 
 #define NULL_SIGNATURE                 0
 
@@ -140,6 +105,8 @@ enum add_key_case {
 
 #define LCORE_CACHE_SIZE               64
 
+#define RTE_HASH_MAX_PUSHES             100
+
 #define RTE_HASH_BFS_QUEUE_MAX_LEN       1000
 
 #define RTE_XABORT_CUCKOO_PATH_INVALIDED 0x4
@@ -161,12 +128,19 @@ struct rte_hash_key {
        char key[0];
 } __attribute__((aligned(KEY_ALIGNMENT)));
 
+/* All different signature compare functions */
+enum rte_hash_sig_compare_function {
+       RTE_HASH_COMPARE_SCALAR = 0,
+       RTE_HASH_COMPARE_SSE,
+       RTE_HASH_COMPARE_AVX2,
+       RTE_HASH_COMPARE_NUM
+};
+
 /** Bucket structure */
 struct rte_hash_bucket {
        hash_sig_t sig_current[RTE_HASH_BUCKET_ENTRIES];
 
-       /* Includes dummy key index that always contains index 0 */
-       uint32_t key_idx[RTE_HASH_BUCKET_ENTRIES + 1];
+       uint32_t key_idx[RTE_HASH_BUCKET_ENTRIES];
 
        hash_sig_t sig_alt[RTE_HASH_BUCKET_ENTRIES];
 
@@ -199,6 +173,8 @@ struct rte_hash {
        /**< Custom function used to compare keys. */
        enum cmp_jump_table_case cmp_jump_table_idx;
        /**< Indicates which compare function to use. */
+       enum rte_hash_sig_compare_function sig_cmp_fn;
+       /**< Indicates which signature compare function to use. */
        uint32_t bucket_bitmask;
        /**< Bitmask for getting bucket index from hash signature. */
        uint32_t key_entry_size;         /**< Size of each key entry. */