1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright 2019 Google LLC
4 */
5
6 #ifndef __LINUX_BLK_CRYPTO_H
7 #define __LINUX_BLK_CRYPTO_H
8
9 #include <linux/bio.h>
10
11 #ifdef CONFIG_BLK_INLINE_ENCRYPTION
12
13 int blk_crypto_submit_bio(struct bio **bio_ptr);
14
15 bool blk_crypto_endio(struct bio *bio);
16
17 int blk_crypto_init_key(struct blk_crypto_key *blk_key,
18 const u8 *raw_key, unsigned int raw_key_size,
19 bool is_hw_wrapped,
20 enum blk_crypto_mode_num crypto_mode,
21 unsigned int dun_bytes,
22 unsigned int data_unit_size);
23
24 int blk_crypto_start_using_mode(enum blk_crypto_mode_num crypto_mode,
25 unsigned int dun_bytes,
26 unsigned int data_unit_size,
27 bool is_hw_wrapped_key,
28 struct request_queue *q);
29
30 int blk_crypto_evict_key(struct request_queue *q,
31 const struct blk_crypto_key *key);
32
33 #else /* CONFIG_BLK_INLINE_ENCRYPTION */
34
blk_crypto_submit_bio(struct bio ** bio_ptr)35 static inline int blk_crypto_submit_bio(struct bio **bio_ptr)
36 {
37 return 0;
38 }
39
blk_crypto_endio(struct bio * bio)40 static inline bool blk_crypto_endio(struct bio *bio)
41 {
42 return true;
43 }
44
45 #endif /* CONFIG_BLK_INLINE_ENCRYPTION */
46
47 #ifdef CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK
48
49 int blk_crypto_fallback_init(void);
50
51 #else /* CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK */
52
blk_crypto_fallback_init(void)53 static inline int blk_crypto_fallback_init(void)
54 {
55 return 0;
56 }
57
58 #endif /* CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK */
59
60 #endif /* __LINUX_BLK_CRYPTO_H */
61