1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2021, Linaro Limited. All rights reserved.
4  */
5 
6 #ifndef _AEAD_H_
7 #define _AEAD_H_
8 
9 #include "common.h"
10 #include "core.h"
11 
12 #define QCE_MAX_KEY_SIZE		64
13 #define QCE_CCM4309_SALT_SIZE		3
14 
15 struct qce_aead_ctx {
16 	u8 enc_key[QCE_MAX_KEY_SIZE];
17 	u8 auth_key[QCE_MAX_KEY_SIZE];
18 	u8 ccm4309_salt[QCE_CCM4309_SALT_SIZE];
19 	unsigned int enc_keylen;
20 	unsigned int auth_keylen;
21 	unsigned int authsize;
22 	bool need_fallback;
23 	struct crypto_aead *fallback;
24 };
25 
26 struct qce_aead_reqctx {
27 	unsigned long flags;
28 	u8 *iv;
29 	unsigned int ivsize;
30 	int src_nents;
31 	int dst_nents;
32 	struct scatterlist result_sg;
33 	struct scatterlist adata_sg;
34 	struct sg_table dst_tbl;
35 	struct sg_table src_tbl;
36 	struct scatterlist *dst_sg;
37 	struct scatterlist *src_sg;
38 	unsigned int cryptlen;
39 	unsigned int assoclen;
40 	unsigned char *adata;
41 	u8 ccm_nonce[QCE_MAX_NONCE];
42 	u8 ccmresult_buf[QCE_BAM_BURST_SIZE];
43 	u8 ccm_rfc4309_iv[QCE_MAX_IV_SIZE];
44 	struct aead_request fallback_req;
45 };
46 
to_aead_tmpl(struct crypto_aead * tfm)47 static inline struct qce_alg_template *to_aead_tmpl(struct crypto_aead *tfm)
48 {
49 	struct aead_alg *alg = crypto_aead_alg(tfm);
50 
51 	return container_of(alg, struct qce_alg_template, alg.aead);
52 }
53 
54 extern const struct qce_algo_ops aead_ops;
55 
56 #endif /* _AEAD_H_ */
57