mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-19 17:14:40 +08:00
d1e4ba83b0
In the quest to remove all stack VLA usage from the kernel[1], this replaces struct crypto_skcipher and SKCIPHER_REQUEST_ON_STACK() usage with struct crypto_sync_skcipher and SYNC_SKCIPHER_REQUEST_ON_STACK(), which uses a fixed stack size. [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com Cc: Himanshu Jha <himanshujha199640@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 and
|
|
* only version 2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef _CIPHER_H_
|
|
#define _CIPHER_H_
|
|
|
|
#include "common.h"
|
|
#include "core.h"
|
|
|
|
#define QCE_MAX_KEY_SIZE 64
|
|
|
|
struct qce_cipher_ctx {
|
|
u8 enc_key[QCE_MAX_KEY_SIZE];
|
|
unsigned int enc_keylen;
|
|
struct crypto_sync_skcipher *fallback;
|
|
};
|
|
|
|
/**
|
|
* struct qce_cipher_reqctx - holds private cipher objects per request
|
|
* @flags: operation flags
|
|
* @iv: pointer to the IV
|
|
* @ivsize: IV size
|
|
* @src_nents: source entries
|
|
* @dst_nents: destination entries
|
|
* @result_sg: scatterlist used for result buffer
|
|
* @dst_tbl: destination sg table
|
|
* @dst_sg: destination sg pointer table beginning
|
|
* @src_tbl: source sg table
|
|
* @src_sg: source sg pointer table beginning;
|
|
* @cryptlen: crypto length
|
|
*/
|
|
struct qce_cipher_reqctx {
|
|
unsigned long flags;
|
|
u8 *iv;
|
|
unsigned int ivsize;
|
|
int src_nents;
|
|
int dst_nents;
|
|
struct scatterlist result_sg;
|
|
struct sg_table dst_tbl;
|
|
struct scatterlist *dst_sg;
|
|
struct sg_table src_tbl;
|
|
struct scatterlist *src_sg;
|
|
unsigned int cryptlen;
|
|
};
|
|
|
|
static inline struct qce_alg_template *to_cipher_tmpl(struct crypto_tfm *tfm)
|
|
{
|
|
struct crypto_alg *alg = tfm->__crt_alg;
|
|
return container_of(alg, struct qce_alg_template, alg.crypto);
|
|
}
|
|
|
|
extern const struct qce_algo_ops ablkcipher_ops;
|
|
|
|
#endif /* _CIPHER_H_ */
|