68 lines
1.6 KiB
C
Executable file
68 lines
1.6 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright 2019 Google LLC
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*/
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#ifndef __LINUX_BLK_CRYPTO_INTERNAL_H
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#define __LINUX_BLK_CRYPTO_INTERNAL_H
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#include <linux/bio.h>
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/* Represents a crypto mode supported by blk-crypto */
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struct blk_crypto_mode {
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const char *cipher_str; /* crypto API name (for fallback case) */
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unsigned int keysize; /* key size in bytes */
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unsigned int ivsize; /* iv size in bytes */
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};
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extern const struct blk_crypto_mode blk_crypto_modes[];
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#ifdef CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK
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int blk_crypto_fallback_start_using_mode(enum blk_crypto_mode_num mode_num);
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int blk_crypto_fallback_submit_bio(struct bio **bio_ptr);
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bool blk_crypto_queue_decrypt_bio(struct bio *bio);
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int blk_crypto_fallback_evict_key(const struct blk_crypto_key *key);
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bool bio_crypt_fallback_crypted(const struct bio_crypt_ctx *bc);
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#else /* CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK */
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static inline int
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blk_crypto_fallback_start_using_mode(enum blk_crypto_mode_num mode_num)
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{
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pr_warn_once("crypto API fallback is disabled\n");
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return -ENOPKG;
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}
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static inline bool bio_crypt_fallback_crypted(const struct bio_crypt_ctx *bc)
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{
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return false;
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}
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static inline int blk_crypto_fallback_submit_bio(struct bio **bio_ptr)
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{
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pr_warn_once("crypto API fallback disabled; failing request\n");
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(*bio_ptr)->bi_status = BLK_STS_NOTSUPP;
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return -EIO;
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}
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static inline bool blk_crypto_queue_decrypt_bio(struct bio *bio)
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{
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WARN_ON(1);
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return false;
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}
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static inline int
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blk_crypto_fallback_evict_key(const struct blk_crypto_key *key)
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{
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return 0;
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}
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#endif /* CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK */
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#endif /* __LINUX_BLK_CRYPTO_INTERNAL_H */
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