mirror of
https://github.com/minio/minio.git
synced 2024-12-29 00:23:21 -05:00
432275e966
- pkg/{subsystem}/{package} style
- modify Makefile to reflect the new style,
consolidate various entries
- add a dummy ``main.go`` at top level
149 lines
5.9 KiB
C
149 lines
5.9 KiB
C
/**********************************************************************
|
|
Copyright(c) 2011-2014 Intel Corporation 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.
|
|
**********************************************************************/
|
|
|
|
|
|
#ifndef _GF_VECT_MUL_H
|
|
#define _GF_VECT_MUL_H
|
|
|
|
/**
|
|
* @file gf-vect-mul.h
|
|
* @brief Interface to functions for vector (block) multiplication in GF(2^8).
|
|
*
|
|
* This file defines the interface to routines used in fast RAID rebuild and
|
|
* erasure codes.
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @brief GF(2^8) vector multiply by constant.
|
|
*
|
|
* Does a GF(2^8) vector multiply b = Ca where a and b are arrays and C
|
|
* is a single field element in GF(2^8). Can be used for RAID6 rebuild
|
|
* and partial write functions. Function requires pre-calculation of a
|
|
* 32-element constant array based on constant C. gftbl(C) = {C{00},
|
|
* C{01}, C{02}, ... , C{0f} }, {C{00}, C{10}, C{20}, ... , C{f0} }. Len
|
|
* and src must be aligned to 32B.
|
|
|
|
* @requires SSE4.1
|
|
* @param len Length of vector in bytes. Must be aligned to 32B.
|
|
* @param gftbl Pointer to 32-byte array of pre-calculated constants based on C.
|
|
* @param src Pointer to src data array. Must be aligned to 32B.
|
|
* @param dest Pointer to destination data array. Must be aligned to 32B.
|
|
* @returns 0 pass, other fail
|
|
*/
|
|
|
|
int gf_vect_mul_sse(int len, uint8_t *gftbl, void *src, void *dest);
|
|
|
|
|
|
/**
|
|
* @brief GF(2^8) vector multiply by constant.
|
|
*
|
|
* Does a GF(2^8) vector multiply b = Ca where a and b are arrays and C
|
|
* is a single field element in GF(2^8). Can be used for RAID6 rebuild
|
|
* and partial write functions. Function requires pre-calculation of a
|
|
* 32-element constant array based on constant C. gftbl(C) = {C{00},
|
|
* C{01}, C{02}, ... , C{0f} }, {C{00}, C{10}, C{20}, ... , C{f0} }. Len
|
|
* and src must be aligned to 32B.
|
|
|
|
* @requires AVX
|
|
* @param len Length of vector in bytes. Must be aligned to 32B.
|
|
* @param gftbl Pointer to 32-byte array of pre-calculated constants based on C.
|
|
* @param src Pointer to src data array. Must be aligned to 32B.
|
|
* @param dest Pointer to destination data array. Must be aligned to 32B.
|
|
* @returns 0 pass, other fail
|
|
*/
|
|
|
|
int gf_vect_mul_avx(int len, uint8_t *gftbl, void *src, void *dest);
|
|
|
|
|
|
/**
|
|
* @brief GF(2^8) vector multiply by constant, runs appropriate version.
|
|
*
|
|
* Does a GF(2^8) vector multiply b = Ca where a and b are arrays and C
|
|
* is a single field element in GF(2^8). Can be used for RAID6 rebuild
|
|
* and partial write functions. Function requires pre-calculation of a
|
|
* 32-element constant array based on constant C. gftbl(C) = {C{00},
|
|
* C{01}, C{02}, ... , C{0f} }, {C{00}, C{10}, C{20}, ... , C{f0} }.
|
|
* Len and src must be aligned to 32B.
|
|
*
|
|
* This function determines what instruction sets are enabled
|
|
* and selects the appropriate version at runtime.
|
|
*
|
|
* @param len Length of vector in bytes. Must be aligned to 32B.
|
|
* @param gftbl Pointer to 32-byte array of pre-calculated constants based on C.
|
|
* @param src Pointer to src data array. Must be aligned to 32B.
|
|
* @param dest Pointer to destination data array. Must be aligned to 32B.
|
|
* @returns 0 pass, other fail
|
|
*/
|
|
|
|
int gf_vect_mul(int len, uint8_t *gftbl, void *src, void *dest);
|
|
|
|
|
|
/**
|
|
* @brief Initialize 32-byte constant array for GF(2^8) vector multiply
|
|
*
|
|
* Calculates array {C{00}, C{01}, C{02}, ... , C{0f} }, {C{00}, C{10},
|
|
* C{20}, ... , C{f0} } as required by other fast vector multiply
|
|
* functions.
|
|
* @param c Constant input.
|
|
* @param gftbl Table output.
|
|
*/
|
|
|
|
void gf_vect_mul_init(uint8_t c, uint8_t* gftbl);
|
|
|
|
|
|
/**
|
|
* @brief GF(2^8) vector multiply by constant, runs baseline version.
|
|
*
|
|
* Does a GF(2^8) vector multiply b = Ca where a and b are arrays and C
|
|
* is a single field element in GF(2^8). Can be used for RAID6 rebuild
|
|
* and partial write functions. Function requires pre-calculation of a
|
|
* 32-element constant array based on constant C. gftbl(C) = {C{00},
|
|
* C{01}, C{02}, ... , C{0f} }, {C{00}, C{10}, C{20}, ... , C{f0} }. Len
|
|
* and src must be aligned to 32B.
|
|
*
|
|
* @param len Length of vector in bytes. Must be aligned to 32B.
|
|
* @param a Pointer to 32-byte array of pre-calculated constants based on C.
|
|
* only use 2nd element is used.
|
|
* @param src Pointer to src data array. Must be aligned to 32B.
|
|
* @param dest Pointer to destination data array. Must be aligned to 32B.
|
|
*/
|
|
|
|
void gf_vect_mul_base(int len, uint8_t *a, uint8_t *src,
|
|
uint8_t *dest);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif //_GF_VECT_MUL_H
|