You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
1.6 KiB
67 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright 2019 Google LLC
|
|
*/
|
|
|
|
#ifndef __LINUX_BLK_CRYPTO_INTERNAL_H
|
|
#define __LINUX_BLK_CRYPTO_INTERNAL_H
|
|
|
|
#include <linux/bio.h>
|
|
|
|
/* Represents a crypto mode supported by blk-crypto */
|
|
struct blk_crypto_mode {
|
|
const char *cipher_str; /* crypto API name (for fallback case) */
|
|
unsigned int keysize; /* key size in bytes */
|
|
unsigned int ivsize; /* iv size in bytes */
|
|
};
|
|
|
|
extern const struct blk_crypto_mode blk_crypto_modes[];
|
|
|
|
#ifdef CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK
|
|
|
|
int blk_crypto_fallback_start_using_mode(enum blk_crypto_mode_num mode_num);
|
|
|
|
int blk_crypto_fallback_submit_bio(struct bio **bio_ptr);
|
|
|
|
bool blk_crypto_queue_decrypt_bio(struct bio *bio);
|
|
|
|
int blk_crypto_fallback_evict_key(const struct blk_crypto_key *key);
|
|
|
|
bool bio_crypt_fallback_crypted(const struct bio_crypt_ctx *bc);
|
|
|
|
#else /* CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK */
|
|
|
|
static inline int
|
|
blk_crypto_fallback_start_using_mode(enum blk_crypto_mode_num mode_num)
|
|
{
|
|
pr_warn_once("crypto API fallback is disabled\n");
|
|
return -ENOPKG;
|
|
}
|
|
|
|
static inline bool bio_crypt_fallback_crypted(const struct bio_crypt_ctx *bc)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int blk_crypto_fallback_submit_bio(struct bio **bio_ptr)
|
|
{
|
|
pr_warn_once("crypto API fallback disabled; failing request\n");
|
|
(*bio_ptr)->bi_status = BLK_STS_NOTSUPP;
|
|
return -EIO;
|
|
}
|
|
|
|
static inline bool blk_crypto_queue_decrypt_bio(struct bio *bio)
|
|
{
|
|
WARN_ON(1);
|
|
return false;
|
|
}
|
|
|
|
static inline int
|
|
blk_crypto_fallback_evict_key(const struct blk_crypto_key *key)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK */
|
|
|
|
#endif /* __LINUX_BLK_CRYPTO_INTERNAL_H */
|
|
|