drivers/crypto/qce/aead.h

   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
  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_ */