mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-05 19:31:57 -04:00
b7b3af9614
Changes v5 => v6: - Blk-crypto's kernel crypto API fallback is no longer restricted to 8-byte DUNs. It's also now separately configurable from blk-crypto, and can be disabled entirely, while still allowing the kernel to use inline encryption hardware. Further, struct bio_crypt_ctx takes up less space, and no longer contains the information needed by the crypto API fallback - the fallback allocates the required memory when necessary. - Blk-crypto now supports all file content encryption modes supported by fscrypt. - Fixed bio merging logic in blk-merge.c - Fscrypt now supports inline encryption with the direct key policy, since blk-crypto now has support for larger DUNs. - Keyslot manager now uses a hashtable to lookup which keyslot contains any particular key (thanks Eric!) - Fscrypt support for inline encryption now handles filesystems with multiple underlying block devices (thanks Eric!) - Numerous cleanups Bug: 137270441 Test: refer to I26376479ee38259b8c35732cb3a1d7e15f9b05a3 Change-Id: I13e2e327e0b4784b394cb1e7cf32a04856d95f01 Link: https://lore.kernel.org/linux-block/20191218145136.172774-1-satyat@google.com/ Signed-off-by: Satya Tangirala <satyat@google.com>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/* 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_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 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("blk-crypto crypto API fallback disabled; failing request");
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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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