drivers/crypto/qce/cipher.h

   1 /*
   2  * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 and
   6  * only version 2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef _CIPHER_H_
  15 #define _CIPHER_H_
  16
  17 #include "common.h"
  18 #include "core.h"
  19
  20 #define QCE_MAX_KEY_SIZE        64
  21
  22 struct qce_cipher_ctx {
  23         u8 enc_key[QCE_MAX_KEY_SIZE];
  24         unsigned int enc_keylen;
  25         struct crypto_ablkcipher *fallback;
  26 };
  27
  28 /**
  29  * struct qce_cipher_reqctx - holds private cipher objects per request
  30  * @flags: operation flags
  31  * @iv: pointer to the IV
  32  * @ivsize: IV size
  33  * @src_nents: source entries
  34  * @dst_nents: destination entries
  35  * @src_chained: is source chained
  36  * @dst_chained: is destination chained
  37  * @result_sg: scatterlist used for result buffer
  38  * @dst_tbl: destination sg table
  39  * @dst_sg: destination sg pointer table beginning
  40  * @src_tbl: source sg table
  41  * @src_sg: source sg pointer table beginning;
  42  * @cryptlen: crypto length
  43  */
  44 struct qce_cipher_reqctx {
  45         unsigned long flags;
  46         u8 *iv;
  47         unsigned int ivsize;
  48         int src_nents;
  49         int dst_nents;
  50         bool src_chained;
  51         bool dst_chained;
  52         struct scatterlist result_sg;
  53         struct sg_table dst_tbl;
  54         struct scatterlist *dst_sg;
  55         struct sg_table src_tbl;
  56         struct scatterlist *src_sg;
  57         unsigned int cryptlen;
  58 };
  59
  60 static inline struct qce_alg_template *to_cipher_tmpl(struct crypto_tfm *tfm)
  61 {
  62         struct crypto_alg *alg = tfm->__crt_alg;
  63         return container_of(alg, struct qce_alg_template, alg.crypto);
  64 }
  65
  66 extern const struct qce_algo_ops ablkcipher_ops;
  67
  68 #endif /* _CIPHER_H_ */