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 _SHA_H_ 15 #define _SHA_H_ 16 17 #include <crypto/scatterwalk.h> 18 #include <crypto/sha.h> 19 20 #include "common.h" 21 #include "core.h" 22 23 #define QCE_SHA_MAX_BLOCKSIZE SHA256_BLOCK_SIZE 24 #define QCE_SHA_MAX_DIGESTSIZE SHA256_DIGEST_SIZE 25 26 struct qce_sha_ctx { 27 u8 authkey[QCE_SHA_MAX_BLOCKSIZE]; 28 }; 29 30 /** 31 * struct qce_sha_reqctx - holds private ahash objects per request 32 * @buf: used during update, import and export 33 * @tmpbuf: buffer for internal use 34 * @digest: calculated digest buffer 35 * @buflen: length of the buffer 36 * @flags: operation flags 37 * @src_orig: original request sg list 38 * @nbytes_orig: original request number of bytes 39 * @src_nents: source number of entries 40 * @byte_count: byte count 41 * @count: save count in states during update, import and export 42 * @first_blk: is it the first block 43 * @last_blk: is it the last block 44 * @sg: used to chain sg lists 45 * @authkey: pointer to auth key in sha ctx 46 * @authklen: auth key length 47 * @result_sg: scatterlist used for result buffer 48 */ 49 struct qce_sha_reqctx { 50 u8 buf[QCE_SHA_MAX_BLOCKSIZE]; 51 u8 tmpbuf[QCE_SHA_MAX_BLOCKSIZE]; 52 u8 digest[QCE_SHA_MAX_DIGESTSIZE]; 53 unsigned int buflen; 54 unsigned long flags; 55 struct scatterlist *src_orig; 56 unsigned int nbytes_orig; 57 int src_nents; 58 __be32 byte_count[2]; 59 u64 count; 60 bool first_blk; 61 bool last_blk; 62 struct scatterlist sg[2]; 63 u8 *authkey; 64 unsigned int authklen; 65 struct scatterlist result_sg; 66 }; 67 68 static inline struct qce_alg_template *to_ahash_tmpl(struct crypto_tfm *tfm) 69 { 70 struct crypto_ahash *ahash = __crypto_ahash_cast(tfm); 71 struct ahash_alg *alg = container_of(crypto_hash_alg_common(ahash), 72 struct ahash_alg, halg); 73 74 return container_of(alg, struct qce_alg_template, alg.ahash); 75 } 76 77 extern const struct qce_algo_ops ahash_ops; 78 79 #endif /* _SHA_H_ */ 80