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
15struct 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
26struct 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
47static 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
54extern const struct qce_algo_ops aead_ops;
55
56#endif /* _AEAD_H_ */