crypto/hash.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Cryptographic API.
   4  *
   5  * Copyright (c) 2023 Herbert Xu <herbert@gondor.apana.org.au>
   6  */
   7 #ifndef _LOCAL_CRYPTO_HASH_H
   8 #define _LOCAL_CRYPTO_HASH_H
   9
  10 #include <crypto/internal/hash.h>
  11 #include <linux/cryptouser.h>
  12
  13 #include "internal.h"
  14
  15 static inline struct crypto_istat_hash *hash_get_stat(
  16         struct hash_alg_common *alg)
  17 {
  18 #ifdef CONFIG_CRYPTO_STATS
  19         return &alg->stat;
  20 #else
  21         return NULL;
  22 #endif
  23 }
  24
  25 static inline int crypto_hash_report_stat(struct sk_buff *skb,
  26                                           struct crypto_alg *alg,
  27                                           const char *type)
  28 {
  29         struct hash_alg_common *halg = __crypto_hash_alg_common(alg);
  30         struct crypto_istat_hash *istat = hash_get_stat(halg);
  31         struct crypto_stat_hash rhash;
  32
  33         memset(&rhash, 0, sizeof(rhash));
  34
  35         strscpy(rhash.type, type, sizeof(rhash.type));
  36
  37         rhash.stat_hash_cnt = atomic64_read(&istat->hash_cnt);
  38         rhash.stat_hash_tlen = atomic64_read(&istat->hash_tlen);
  39         rhash.stat_err_cnt = atomic64_read(&istat->err_cnt);
  40
  41         return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash);
  42 }
  43
  44 extern const struct crypto_type crypto_shash_type;
  45
  46 int hash_prepare_alg(struct hash_alg_common *alg);
  47
  48 #endif  /* _LOCAL_CRYPTO_HASH_H */