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+/*******************************************************************************
+ Copyright (c) 2019, Intel Corporation
+
+ 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.
+*******************************************************************************/
+
+#ifndef CONSTANT_LOOKUP_H
+#define CONSTANT_LOOKUP_H
+
+#include "intel-ipsec-mb.h"
+
+#ifdef SAFE_LOOKUP
+#define LOOKUP8_SSE(_table, _idx, _size) \
+ lookup_8bit_sse(_table, _idx, _size)
+#define LOOKUP8_AVX(_table, _idx, _size) \
+ lookup_8bit_avx(_table, _idx, _size)
+#define LOOKUP16_SSE(_table, _idx, _size) \
+ lookup_16bit_sse(_table, _idx, _size)
+#define LOOKUP16_AVX(_table, _idx, _size) \
+ lookup_16bit_avx(_table, _idx, _size)
+#define LOOKUP32_SSE(_table, _idx, _size) \
+ lookup_32bit_sse(_table, _idx, _size)
+#define LOOKUP32_AVX(_table, _idx, _size) \
+ lookup_32bit_avx(_table, _idx, _size)
+#define LOOKUP64_SSE(_table, _idx, _size) \
+ lookup_64bit_sse(_table, _idx, _size)
+#define LOOKUP64_AVX(_table, _idx, _size) \
+ lookup_64bit_avx(_table, _idx, _size)
+#else
+#define LOOKUP8_SSE(_table, _idx, _size) \
+ _table[_idx]
+#define LOOKUP8_AVX(_table, _idx, _size) \
+ _table[_idx]
+#define LOOKUP16_SSE(_table, _idx, _size) \
+ _table[_idx]
+#define LOOKUP16_AVX(_table, _idx, _size) \
+ _table[_idx]
+#define LOOKUP32_SSE(_table, _idx, _size) \
+ _table[_idx]
+#define LOOKUP32_AVX(_table, _idx, _size) \
+ _table[_idx]
+#define LOOKUP64_SSE(_table, _idx, _size) \
+ _table[_idx]
+#define LOOKUP64_AVX(_table, _idx, _size) \
+ _table[_idx]
+#endif
+
+/*
+ * @brief Constant time SSE lookup function on variable size table
+ * with 8-bit values
+ *
+ * @param[in] table Pointer to the table to look up (16-byte aligned)
+ * @param[in] idx Index to look up
+ * @param[in] size Number of 8 bit elements in the table (multiple of 16)
+ *
+ * @return value to lookup
+ */
+uint8_t
+lookup_8bit_sse(const void *table, const uint32_t idx, const uint32_t size);
+
+/*
+ * @brief Constant time AVX lookup function on variable size table
+ * with 8-bit values
+ *
+ * @param[in] table Pointer to the table to look up (16-byte aligned)
+ * @param[in] idx Index to look up
+ * @param[in] size Number of 8 bit elements in the table (multiple of 16)
+ *
+ * @return value to lookup
+ */
+uint8_t
+lookup_8bit_avx(const void *table, const uint32_t idx, const uint32_t size);
+
+/*
+ * @brief Constant time SSE lookup function on variable size table
+ * with 16-bit values
+ *
+ * @param[in] table Pointer to the table to look up (16-byte aligned)
+ * @param[in] idx Index to look up
+ * @param[in] size Number of 16 bit elements in the table (multiple of 8)
+ *
+ * @return value to lookup
+ */
+uint16_t
+lookup_16bit_sse(const void *table, const uint32_t idx, const uint32_t size);
+
+/*
+ * @brief Constant time AVX lookup function on variable size table
+ * with 16-bit values
+ *
+ * @param[in] table Pointer to the table to look up (16-byte aligned)
+ * @param[in] idx Index to look up
+ * @param[in] size Number of 16 bit elements in the table (multiple of 8)
+ *
+ * @return value to lookup
+ */
+uint16_t
+lookup_16bit_avx(const void *table, const uint32_t idx, const uint32_t size);
+
+/*
+ * @brief Constant time SSE lookup function on
+ * variable size table with 32-bit values
+ *
+ * @param[in] table Pointer to the table to look up (16-byte aligned)
+ * @param[in] idx Index to look up
+ * @param[in] size Number of 32 bit elements in the table (multiple of 4)
+ *
+ * @return value to lookup
+ */
+uint32_t
+lookup_32bit_sse(const void *table, const uint32_t idx, const uint32_t size);
+
+/*
+ * @brief Constant time AVX lookup function on
+ * variable size table with 32-bit values
+ *
+ * @param[in] table Pointer to the table to look up (16-byte aligned)
+ * @param[in] idx Index to look up
+ * @param[in] size Number of 32 bit elements in the table (multiple of 4)
+ *
+ * @return value to lookup
+ */
+uint32_t
+lookup_32bit_avx(const void *table, const uint32_t idx, const uint32_t size);
+
+/*
+ * @brief Constant time SSE lookup function on
+ * variable size table with 64-bit values
+ *
+ * @param[in] table Pointer to the table to look up (16-byte aligned)
+ * @param[in] idx Index to look up
+ * @param[in] size Number of 64 bit elements in the table (multiple of 2)
+ *
+ * @return value to lookup
+ */
+uint64_t
+lookup_64bit_sse(const void *table, const uint32_t idx, const uint32_t size);
+
+/*
+ * @brief Constant time AVX lookup function on
+ * variable size table with 64-bit values
+ *
+ * @param[in] table Pointer to the table to look up (16-byte aligned)
+ * @param[in] idx Index to look up
+ * @param[in] size Number of 64 bit elements in the table (multiple of 2)
+ *
+ * @return value to lookup
+ */
+uint64_t
+lookup_64bit_avx(const void *table, const uint32_t idx, const uint32_t size);
+
+#endif /* CONSTANT_LOOKUP_H */