https://github.com/torvalds/linux
Revision 4873d8cc141e76aa5f3e7ef6e98dfb3823fcbe6d authored by Marek Behún on 09 April 2021, 20:27:01 UTC, committed by Linus Torvalds on 09 April 2021, 21:54:23 UTC
Add all the files maintained by Turris team, not only for MOX, but also for Omnia. Change website. Link: https://lkml.kernel.org/r/20210325171123.28093-1-kabel@kernel.org Signed-off-by: Marek Behún <kabel@kernel.org> Cc: Pavel Machek <pavel@ucw.cz> Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 17e7124
Tip revision: 4873d8cc141e76aa5f3e7ef6e98dfb3823fcbe6d authored by Marek Behún on 09 April 2021, 20:27:01 UTC
MAINTAINERS: update CZ.NIC's Turris information
MAINTAINERS: update CZ.NIC's Turris information
Tip revision: 4873d8c
lz4hc.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* Cryptographic API.
*
* Copyright (c) 2013 Chanho Min <chanho.min@lge.com>
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/crypto.h>
#include <linux/vmalloc.h>
#include <linux/lz4.h>
#include <crypto/internal/scompress.h>
struct lz4hc_ctx {
void *lz4hc_comp_mem;
};
static void *lz4hc_alloc_ctx(struct crypto_scomp *tfm)
{
void *ctx;
ctx = vmalloc(LZ4HC_MEM_COMPRESS);
if (!ctx)
return ERR_PTR(-ENOMEM);
return ctx;
}
static int lz4hc_init(struct crypto_tfm *tfm)
{
struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
ctx->lz4hc_comp_mem = lz4hc_alloc_ctx(NULL);
if (IS_ERR(ctx->lz4hc_comp_mem))
return -ENOMEM;
return 0;
}
static void lz4hc_free_ctx(struct crypto_scomp *tfm, void *ctx)
{
vfree(ctx);
}
static void lz4hc_exit(struct crypto_tfm *tfm)
{
struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
lz4hc_free_ctx(NULL, ctx->lz4hc_comp_mem);
}
static int __lz4hc_compress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
int out_len = LZ4_compress_HC(src, dst, slen,
*dlen, LZ4HC_DEFAULT_CLEVEL, ctx);
if (!out_len)
return -EINVAL;
*dlen = out_len;
return 0;
}
static int lz4hc_scompress(struct crypto_scomp *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen,
void *ctx)
{
return __lz4hc_compress_crypto(src, slen, dst, dlen, ctx);
}
static int lz4hc_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst,
unsigned int *dlen)
{
struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
return __lz4hc_compress_crypto(src, slen, dst, dlen,
ctx->lz4hc_comp_mem);
}
static int __lz4hc_decompress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
int out_len = LZ4_decompress_safe(src, dst, slen, *dlen);
if (out_len < 0)
return -EINVAL;
*dlen = out_len;
return 0;
}
static int lz4hc_sdecompress(struct crypto_scomp *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen,
void *ctx)
{
return __lz4hc_decompress_crypto(src, slen, dst, dlen, NULL);
}
static int lz4hc_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst,
unsigned int *dlen)
{
return __lz4hc_decompress_crypto(src, slen, dst, dlen, NULL);
}
static struct crypto_alg alg_lz4hc = {
.cra_name = "lz4hc",
.cra_driver_name = "lz4hc-generic",
.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
.cra_ctxsize = sizeof(struct lz4hc_ctx),
.cra_module = THIS_MODULE,
.cra_init = lz4hc_init,
.cra_exit = lz4hc_exit,
.cra_u = { .compress = {
.coa_compress = lz4hc_compress_crypto,
.coa_decompress = lz4hc_decompress_crypto } }
};
static struct scomp_alg scomp = {
.alloc_ctx = lz4hc_alloc_ctx,
.free_ctx = lz4hc_free_ctx,
.compress = lz4hc_scompress,
.decompress = lz4hc_sdecompress,
.base = {
.cra_name = "lz4hc",
.cra_driver_name = "lz4hc-scomp",
.cra_module = THIS_MODULE,
}
};
static int __init lz4hc_mod_init(void)
{
int ret;
ret = crypto_register_alg(&alg_lz4hc);
if (ret)
return ret;
ret = crypto_register_scomp(&scomp);
if (ret) {
crypto_unregister_alg(&alg_lz4hc);
return ret;
}
return ret;
}
static void __exit lz4hc_mod_fini(void)
{
crypto_unregister_alg(&alg_lz4hc);
crypto_unregister_scomp(&scomp);
}
subsys_initcall(lz4hc_mod_init);
module_exit(lz4hc_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LZ4HC Compression Algorithm");
MODULE_ALIAS_CRYPTO("lz4hc");
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