e3af8d5f64
Inline Crypto Engine dun setting is done based on its version. For version <= 2 storage driver handles the dun setting. For version > 2 dun is handled in trustzone ice driver. Change-Id: If88ea132c4151712e8402b64b3b88bd3daf2fd18 Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef PFK_H_
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#define PFK_H_
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#include <linux/bio.h>
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struct ice_crypto_setting;
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#ifdef CONFIG_PFK
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/*
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* Default key for inline encryption.
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*
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* For now only AES-256-XTS is supported, so this is a fixed length. But if
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* ever needed, this should be made variable-length with a 'mode' and 'size'.
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* (Remember to update pfk_allow_merge_bio() when doing so!)
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*/
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#define BLK_ENCRYPTION_KEY_SIZE_AES_256_XTS 64
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struct blk_encryption_key {
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u8 raw[BLK_ENCRYPTION_KEY_SIZE_AES_256_XTS];
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};
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int pfk_load_key_start(const struct bio *bio,
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struct ice_crypto_setting *ice_setting,
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bool *is_pfe, bool async, int ice_rev);
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int pfk_load_key_end(const struct bio *bio, bool *is_pfe);
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int pfk_remove_key(const unsigned char *key, size_t key_size);
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bool pfk_allow_merge_bio(const struct bio *bio1, const struct bio *bio2);
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void pfk_clear_on_reset(void);
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#else
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static inline int pfk_load_key_start(const struct bio *bio,
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struct ice_crypto_setting *ice_setting, bool *is_pfe,
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bool async, int ice_rev)
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{
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return -ENODEV;
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}
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static inline int pfk_load_key_end(const struct bio *bio, bool *is_pfe)
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{
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return -ENODEV;
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}
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static inline int pfk_remove_key(const unsigned char *key, size_t key_size)
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{
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return -ENODEV;
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}
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static inline bool pfk_allow_merge_bio(const struct bio *bio1,
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const struct bio *bio2)
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{
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return true;
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}
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static inline void pfk_clear_on_reset(void)
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{}
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#endif /* CONFIG_PFK */
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#endif /* PFK_H */
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