alg_sig.c File Reference

#include <dlfcn.h>
#include <alg_sig.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Go to the source code of this file.

Macros
#define	GALOIS_SINGLE_MULTIPLY   "galois_single_multiply"
#define	GALOIS_UNINIT   "galois_uninit_field"

Functions
static galois_single_multiply_func	get_galois_multi_func (void *handle)
static void	stub_galois_uninit_field (int w)
static galois_uninit_field_func	get_galois_uninit_func (void *handle)
static void *	get_jerasure_sohandle (void)
static int	load_gf_functions (void *sohandle, struct jerasure_mult_routines *routines)
static alg_sig_t *	init_alg_sig_w8 (void *jerasure_sohandle, int sig_len)
static alg_sig_t *	init_alg_sig_w16 (void *jerasure_sohandle, int sig_len)
	__attribute__ ((visibility("internal")))
static int	compute_w8_alg_sig_32 (alg_sig_t *alg_sig_handle, char *buf, int len, char *sig)
static int	compute_w16_alg_sig_64 (alg_sig_t *alg_sig_handle, char *buf, int len, char *sig)
static int	compute_w16_alg_sig_32 (alg_sig_t *alg_sig_handle, char *buf, int len, char *sig)
static int	compute_alg_sig_32 (alg_sig_t *alg_sig_handle, char *buf, int len, char *sig)
static int	compute_alg_sig_64 (alg_sig_t *alg_sig_handle, char *buf, int len, char *sig)

Variables
static int	valid_pairs [][2] = { { 8, 32}, {16, 32}, {16, 64}, {-1, -1} }

Macro Definition Documentation

GALOIS_SINGLE_MULTIPLY

#define GALOIS_SINGLE_MULTIPLY   "galois_single_multiply"

Definition at line 30 of file alg_sig.c.

GALOIS_UNINIT

#define GALOIS_UNINIT   "galois_uninit_field"

Definition at line 31 of file alg_sig.c.

Function Documentation

__attribute__()

__attribute__

(

(visibility("internal"))

)

Definition at line 233 of file alg_sig.c.

References get_jerasure_sohandle(), init_alg_sig_w16(), init_alg_sig_w8(), and valid_pairs.

compute_alg_sig_32()

static int compute_alg_sig_32 ( alg_sig_t *  alg_sig_handle, char *  buf, int  len, char *  sig  )

static

Definition at line 427 of file alg_sig.c.

References compute_w16_alg_sig_32(), and compute_w8_alg_sig_32().

compute_alg_sig_64()

static int compute_alg_sig_64 ( alg_sig_t *  alg_sig_handle, char *  buf, int  len, char *  sig  )

static

Definition at line 438 of file alg_sig.c.

References compute_w16_alg_sig_64().

compute_w16_alg_sig_32()

static int compute_w16_alg_sig_32 ( alg_sig_t *  alg_sig_handle, char *  buf, int  len, char *  sig  )

static

This is the loop to optimize. It is currently optimized enough : using Horner's alg., shortened mult. tables, and other tricks.

Definition at line 380 of file alg_sig.c.

Referenced by compute_alg_sig_32().

compute_w16_alg_sig_64()

static int compute_w16_alg_sig_64 ( alg_sig_t *  alg_sig_handle, char *  buf, int  len, char *  sig  )

static

This is the loop to optimize. It is currently optimized enough : using Horner's alg., shortened mult. tables, and other tricks.

Definition at line 325 of file alg_sig.c.

Referenced by compute_alg_sig_64().

compute_w8_alg_sig_32()

static int compute_w8_alg_sig_32 ( alg_sig_t *  alg_sig_handle, char *  buf, int  len, char *  sig  )

static

This is the loop to optimize. It is currently optimized enough : using Horner's alg., shortened mult. tables, and other tricks.

Definition at line 296 of file alg_sig.c.

Referenced by compute_alg_sig_32().

get_galois_multi_func()

static galois_single_multiply_func get_galois_multi_func ( void *  handle )

static

Definition at line 36 of file alg_sig.c.

References GALOIS_SINGLE_MULTIPLY.

Referenced by load_gf_functions().

get_galois_uninit_func()

static galois_uninit_field_func get_galois_uninit_func ( void *  handle )

static

Definition at line 52 of file alg_sig.c.

References GALOIS_UNINIT.

Referenced by load_gf_functions().

get_jerasure_sohandle()

static void * get_jerasure_sohandle ( void  )

static

Definition at line 67 of file alg_sig.c.

Referenced by __attribute__().

init_alg_sig_w16()

static alg_sig_t * init_alg_sig_w16 ( void *  jerasure_sohandle, int  sig_len  )

static

Definition at line 153 of file alg_sig.c.

References load_gf_functions().

Referenced by __attribute__().

init_alg_sig_w8()

static alg_sig_t * init_alg_sig_w8 ( void *  jerasure_sohandle, int  sig_len  )

static

Definition at line 96 of file alg_sig.c.

References load_gf_functions().

Referenced by __attribute__().

load_gf_functions()

static int load_gf_functions ( void *  sohandle, struct jerasure_mult_routines *  routines  )

static

It is possible that the underlying Jerasure implementation is old (pre-jerasure.org). If so, there is not an uninit function, so these tests will fail.

Since nothing is using alg_sig at the moment, we stub the uninit function to unblock the tests. Once we plug the internal GF functions into alg_sig, this can jsut go away.

Definition at line 72 of file alg_sig.c.

References get_galois_multi_func(), get_galois_uninit_func(), and stub_galois_uninit_field().

Referenced by init_alg_sig_w16(), and init_alg_sig_w8().

stub_galois_uninit_field()

static void stub_galois_uninit_field ( int  w )

static

Definition at line 50 of file alg_sig.c.

Referenced by load_gf_functions().

Variable Documentation

valid_pairs

int valid_pairs[][2] = { { 8, 32}, {16, 32}, {16, 64}, {-1, -1} }

static

Definition at line 34 of file alg_sig.c.

Referenced by __attribute__().