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m1721: backport new zstd from linux mainline #7

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m1721: backport new zstd from linux mainline #7

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8747cd9
lib: zstd: clean up Makefile for simpler composite object handling
masahir0y Mar 19, 2018
44c5fbb
lib: zstd: Mark expected switch fall-throughs
GustavoARSilva Jan 25, 2019
3c3eb24
lib/zstd/mem.h: replace __inline by inline
Villemoes Sep 12, 2019
600b89d
lib: Prepare zstd for preboot environment, improve performance
terrelln Jul 30, 2020
231d526
lib: Add zstd support to decompress
terrelln Jul 30, 2020
ead639a
lib: decompress_unzstd: Limit output size
pcercuei Sep 1, 2020
32ce78b
lib/zstd: convert constants to defines
lorddoskias Jan 22, 2021
32c5d46
lib: zstd: Add kernel-specific API
terrelln Sep 11, 2020
7372c09
lib: zstd: Add decompress_sources.h for decompress_unzstd
terrelln Sep 14, 2020
a8389aa
lib: zstd: Upgrade to latest upstream zstd version 1.4.10
terrelln Sep 11, 2020
c6cbd15
lib: zstd: Add cast to silence clang's -Wbitwise-instead-of-logical
nathanchance Oct 21, 2021
4bbbb8c
lib: zstd: Fix unused variable warning
terrelln Nov 16, 2021
6f0a83d
lib: zstd: Don't inline functions in zstd_opt.c
terrelln Nov 16, 2021
3e0b859
lib: zstd: Don't add -O3 to cflags
terrelln Nov 16, 2021
2561c1e
lib/zstd: make compiler happy
urain39 Jul 8, 2022
7bc16e5
m1721: add CONFIG_CRYPTO_ZSTD=y
urain39 Jul 11, 2022
0deb072
crypto/zstd.c: ZSTD_DEF_LEVEL swtich to 1
urain39 Jul 15, 2022
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1 change: 1 addition & 0 deletions arch/arm64/configs/m1721_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -694,6 +694,7 @@ CONFIG_CRYPTO_GCM=y
CONFIG_CRYPTO_XCBC=y
CONFIG_CRYPTO_TWOFISH=y
CONFIG_CRYPTO_LZO=y
CONFIG_CRYPTO_ZSTD=y
CONFIG_CRYPTO_ANSI_CPRNG=y
CONFIG_CRYPTO_DEV_QCOM_MSM_QCE=y
CONFIG_CRYPTO_DEV_QCRYPTO=y
Expand Down
30 changes: 15 additions & 15 deletions crypto/zstd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -22,33 +22,33 @@
#include <linux/zstd.h>


#define ZSTD_DEF_LEVEL 3
#define ZSTD_DEF_LEVEL 1

struct zstd_ctx {
ZSTD_CCtx *cctx;
ZSTD_DCtx *dctx;
zstd_cctx *cctx;
zstd_dctx *dctx;
void *cwksp;
void *dwksp;
};

static ZSTD_parameters zstd_params(void)
static zstd_parameters zstd_params(void)
{
return ZSTD_getParams(ZSTD_DEF_LEVEL, 0, 0);
return zstd_get_params(ZSTD_DEF_LEVEL, 0);
}

static int zstd_comp_init(struct zstd_ctx *ctx)
{
int ret = 0;
const ZSTD_parameters params = zstd_params();
const size_t wksp_size = ZSTD_CCtxWorkspaceBound(params.cParams);
const zstd_parameters params = zstd_params();
const size_t wksp_size = zstd_cctx_workspace_bound(&params.cParams);

ctx->cwksp = vzalloc(wksp_size);
if (!ctx->cwksp) {
ret = -ENOMEM;
goto out;
}

ctx->cctx = ZSTD_initCCtx(ctx->cwksp, wksp_size);
ctx->cctx = zstd_init_cctx(ctx->cwksp, wksp_size);
if (!ctx->cctx) {
ret = -EINVAL;
goto out_free;
Expand All @@ -63,15 +63,15 @@ static int zstd_comp_init(struct zstd_ctx *ctx)
static int zstd_decomp_init(struct zstd_ctx *ctx)
{
int ret = 0;
const size_t wksp_size = ZSTD_DCtxWorkspaceBound();
const size_t wksp_size = zstd_dctx_workspace_bound();

ctx->dwksp = vzalloc(wksp_size);
if (!ctx->dwksp) {
ret = -ENOMEM;
goto out;
}

ctx->dctx = ZSTD_initDCtx(ctx->dwksp, wksp_size);
ctx->dctx = zstd_init_dctx(ctx->dwksp, wksp_size);
if (!ctx->dctx) {
ret = -EINVAL;
goto out_free;
Expand Down Expand Up @@ -135,10 +135,10 @@ static int __zstd_compress(const u8 *src, unsigned int slen,
{
size_t out_len;
struct zstd_ctx *zctx = ctx;
const ZSTD_parameters params = zstd_params();
const zstd_parameters params = zstd_params();

out_len = ZSTD_compressCCtx(zctx->cctx, dst, *dlen, src, slen, params);
if (ZSTD_isError(out_len))
out_len = zstd_compress_cctx(zctx->cctx, dst, *dlen, src, slen, &params);
if (zstd_is_error(out_len))
return -EINVAL;
*dlen = out_len;
return 0;
Expand All @@ -158,8 +158,8 @@ static int __zstd_decompress(const u8 *src, unsigned int slen,
size_t out_len;
struct zstd_ctx *zctx = ctx;

out_len = ZSTD_decompressDCtx(zctx->dctx, dst, *dlen, src, slen);
if (ZSTD_isError(out_len))
out_len = zstd_decompress_dctx(zctx->dctx, dst, *dlen, src, slen);
if (zstd_is_error(out_len))
return -EINVAL;
*dlen = out_len;
return 0;
Expand Down
11 changes: 11 additions & 0 deletions include/linux/decompress/unzstd.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef LINUX_DECOMPRESS_UNZSTD_H
#define LINUX_DECOMPRESS_UNZSTD_H

int unzstd(unsigned char *inbuf, long len,
long (*fill)(void*, unsigned long),
long (*flush)(void*, unsigned long),
unsigned char *output,
long *pos,
void (*error_fn)(char *x));
#endif
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