35b62551b9
While we're waiting for v7 of the inline crypto patchset, fix some bugs that made it into the v6 patchset, including one that caused bios with an encryption context to never be merged, and one that could cause non-contiguous pages to incorrectly added to a bio. Bug: 137270441 Change-Id: I3911fcd6c76b5c9063b86d6af6267ad990a46718 Signed-off-by: Eric Biggers <ebiggers@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("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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