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1 /*******************************************************************************
2 Copyright (c) 2018, Intel Corporation
4 Redistribution and use in source and binary forms, with or without
5 modification, are permitted provided that the following conditions are met:
7 * Redistributions of source code must retain the above copyright notice,
8 this list of conditions and the following disclaimer.
9 * Redistributions in binary form must reproduce the above copyright
10 notice, this list of conditions and the following disclaimer in the
11 documentation and/or other materials provided with the distribution.
12 * Neither the name of Intel Corporation nor the names of its contributors
13 may be used to endorse or promote products derived from this software
14 without specific prior written permission.
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
20 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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25 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *******************************************************************************/
30 #include <stdlib.h> /* posix_memalign() and free() */
32 #include <malloc.h> /* _aligned_malloc() and aligned_free() */
34 #include "intel-ipsec-mb.h"
35 #include "cpu_feature.h"
38 * @brief Allocates memory for multi-buffer manager instance
40 * For binary compatibility between library versions
41 * it is recommended to use this API.
43 * @param flags multi-buffer manager flags
44 * IMB_FLAG_SHANI_OFF - disable use (and detection) of SHA extenstions,
45 * currently SHANI is only available for SSE
47 * @return Pointer to allocated memory for MB_MGR structure
48 * @retval NULL on allocation error
50 MB_MGR
*alloc_mb_mgr(uint64_t flags
)
52 const size_t alignment
= 64;
53 const size_t size
= sizeof(MB_MGR
);
57 if (posix_memalign((void **)&ptr
, alignment
, size
))
60 ptr
= _aligned_malloc(size
, alignment
);
63 ptr
->flags
= flags
; /* save the flags for future use in init */
64 ptr
->features
= cpu_feature_adjust(flags
, cpu_feature_detect());
66 IMB_ASSERT(ptr
!= NULL
);
71 * @brief Frees memory allocated previously by alloc_mb_mgr()
73 * @param ptr a pointer to allocated MB_MGR structure
76 void free_mb_mgr(MB_MGR
*ptr
)
78 IMB_ASSERT(ptr
!= NULL
);