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1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
4  */
5 
6 #ifndef _CIPHER_H_
7 #define _CIPHER_H_
8 
9 #include "common.h"
10 #include "core.h"
11 
12 #define QCE_MAX_KEY_SIZE	64
13 
14 struct qce_cipher_ctx {
15 	u8 enc_key[QCE_MAX_KEY_SIZE];
16 	unsigned int enc_keylen;
17 	struct crypto_skcipher *fallback;
18 };
19 
20 /**
21  * struct qce_cipher_reqctx - holds private cipher objects per request
22  * @flags: operation flags
23  * @iv: pointer to the IV
24  * @ivsize: IV size
25  * @src_nents: source entries
26  * @dst_nents: destination entries
27  * @result_sg: scatterlist used for result buffer
28  * @dst_tbl: destination sg table
29  * @dst_sg: destination sg pointer table beginning
30  * @src_tbl: source sg table
31  * @src_sg: source sg pointer table beginning;
32  * @cryptlen: crypto length
33  */
34 struct qce_cipher_reqctx {
35 	unsigned long flags;
36 	u8 *iv;
37 	unsigned int ivsize;
38 	int src_nents;
39 	int dst_nents;
40 	struct scatterlist result_sg;
41 	struct sg_table dst_tbl;
42 	struct scatterlist *dst_sg;
43 	struct sg_table src_tbl;
44 	struct scatterlist *src_sg;
45 	unsigned int cryptlen;
46 	struct skcipher_request fallback_req;	// keep at the end
47 };
48 
to_cipher_tmpl(struct crypto_skcipher * tfm)49 static inline struct qce_alg_template *to_cipher_tmpl(struct crypto_skcipher *tfm)
50 {
51 	struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
52 	return container_of(alg, struct qce_alg_template, alg.skcipher);
53 }
54 
55 extern const struct qce_algo_ops skcipher_ops;
56 
57 #endif /* _CIPHER_H_ */
58