mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 17:46:41 +07:00
3ce5bc72eb
Add crypto_register_acomps and crypto_unregister_acomps to allow the registration of multiple implementations with one call. Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
200 lines
4.8 KiB
C
200 lines
4.8 KiB
C
/*
|
|
* Asynchronous Compression operations
|
|
*
|
|
* Copyright (c) 2016, Intel Corporation
|
|
* Authors: Weigang Li <weigang.li@intel.com>
|
|
* Giovanni Cabiddu <giovanni.cabiddu@intel.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
*/
|
|
#include <linux/errno.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
#include <linux/crypto.h>
|
|
#include <crypto/algapi.h>
|
|
#include <linux/cryptouser.h>
|
|
#include <linux/compiler.h>
|
|
#include <net/netlink.h>
|
|
#include <crypto/internal/acompress.h>
|
|
#include <crypto/internal/scompress.h>
|
|
#include "internal.h"
|
|
|
|
static const struct crypto_type crypto_acomp_type;
|
|
|
|
#ifdef CONFIG_NET
|
|
static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
|
|
{
|
|
struct crypto_report_acomp racomp;
|
|
|
|
strncpy(racomp.type, "acomp", sizeof(racomp.type));
|
|
|
|
if (nla_put(skb, CRYPTOCFGA_REPORT_ACOMP,
|
|
sizeof(struct crypto_report_acomp), &racomp))
|
|
goto nla_put_failure;
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
return -EMSGSIZE;
|
|
}
|
|
#else
|
|
static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
#endif
|
|
|
|
static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
|
|
__maybe_unused;
|
|
|
|
static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
|
|
{
|
|
seq_puts(m, "type : acomp\n");
|
|
}
|
|
|
|
static void crypto_acomp_exit_tfm(struct crypto_tfm *tfm)
|
|
{
|
|
struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
|
|
struct acomp_alg *alg = crypto_acomp_alg(acomp);
|
|
|
|
alg->exit(acomp);
|
|
}
|
|
|
|
static int crypto_acomp_init_tfm(struct crypto_tfm *tfm)
|
|
{
|
|
struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
|
|
struct acomp_alg *alg = crypto_acomp_alg(acomp);
|
|
|
|
if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
|
|
return crypto_init_scomp_ops_async(tfm);
|
|
|
|
acomp->compress = alg->compress;
|
|
acomp->decompress = alg->decompress;
|
|
acomp->dst_free = alg->dst_free;
|
|
acomp->reqsize = alg->reqsize;
|
|
|
|
if (alg->exit)
|
|
acomp->base.exit = crypto_acomp_exit_tfm;
|
|
|
|
if (alg->init)
|
|
return alg->init(acomp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
|
|
{
|
|
int extsize = crypto_alg_extsize(alg);
|
|
|
|
if (alg->cra_type != &crypto_acomp_type)
|
|
extsize += sizeof(struct crypto_scomp *);
|
|
|
|
return extsize;
|
|
}
|
|
|
|
static const struct crypto_type crypto_acomp_type = {
|
|
.extsize = crypto_acomp_extsize,
|
|
.init_tfm = crypto_acomp_init_tfm,
|
|
#ifdef CONFIG_PROC_FS
|
|
.show = crypto_acomp_show,
|
|
#endif
|
|
.report = crypto_acomp_report,
|
|
.maskclear = ~CRYPTO_ALG_TYPE_MASK,
|
|
.maskset = CRYPTO_ALG_TYPE_ACOMPRESS_MASK,
|
|
.type = CRYPTO_ALG_TYPE_ACOMPRESS,
|
|
.tfmsize = offsetof(struct crypto_acomp, base),
|
|
};
|
|
|
|
struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
|
|
u32 mask)
|
|
{
|
|
return crypto_alloc_tfm(alg_name, &crypto_acomp_type, type, mask);
|
|
}
|
|
EXPORT_SYMBOL_GPL(crypto_alloc_acomp);
|
|
|
|
struct acomp_req *acomp_request_alloc(struct crypto_acomp *acomp)
|
|
{
|
|
struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
|
|
struct acomp_req *req;
|
|
|
|
req = __acomp_request_alloc(acomp);
|
|
if (req && (tfm->__crt_alg->cra_type != &crypto_acomp_type))
|
|
return crypto_acomp_scomp_alloc_ctx(req);
|
|
|
|
return req;
|
|
}
|
|
EXPORT_SYMBOL_GPL(acomp_request_alloc);
|
|
|
|
void acomp_request_free(struct acomp_req *req)
|
|
{
|
|
struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
|
|
struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
|
|
|
|
if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
|
|
crypto_acomp_scomp_free_ctx(req);
|
|
|
|
if (req->flags & CRYPTO_ACOMP_ALLOC_OUTPUT) {
|
|
acomp->dst_free(req->dst);
|
|
req->dst = NULL;
|
|
}
|
|
|
|
__acomp_request_free(req);
|
|
}
|
|
EXPORT_SYMBOL_GPL(acomp_request_free);
|
|
|
|
int crypto_register_acomp(struct acomp_alg *alg)
|
|
{
|
|
struct crypto_alg *base = &alg->base;
|
|
|
|
base->cra_type = &crypto_acomp_type;
|
|
base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
|
|
base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS;
|
|
|
|
return crypto_register_alg(base);
|
|
}
|
|
EXPORT_SYMBOL_GPL(crypto_register_acomp);
|
|
|
|
int crypto_unregister_acomp(struct acomp_alg *alg)
|
|
{
|
|
return crypto_unregister_alg(&alg->base);
|
|
}
|
|
EXPORT_SYMBOL_GPL(crypto_unregister_acomp);
|
|
|
|
int crypto_register_acomps(struct acomp_alg *algs, int count)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
ret = crypto_register_acomp(&algs[i]);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
for (--i; i >= 0; --i)
|
|
crypto_unregister_acomp(&algs[i]);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(crypto_register_acomps);
|
|
|
|
void crypto_unregister_acomps(struct acomp_alg *algs, int count)
|
|
{
|
|
int i;
|
|
|
|
for (i = count - 1; i >= 0; --i)
|
|
crypto_unregister_acomp(&algs[i]);
|
|
}
|
|
EXPORT_SYMBOL_GPL(crypto_unregister_acomps);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("Asynchronous compression type");
|