From 42808e5dc602c12ef3eb42cf96cb416b55205fa4 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 16 Feb 2023 18:35:15 +0800 Subject: crypto: hash - Count error stats differently Move all stat code specific to hash into the hash code. While we're at it, change the stats so that bytes and counts are always incremented even in case of error. This allows the reference counting to be removed as we can now increment the counters prior to the operation. After the operation we simply increase the error count if necessary. This is safe as errors can only occur synchronously (or rather, the existing code already ignored asynchronous errors which are only visible to the callback function). Signed-off-by: Herbert Xu --- crypto/hash.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 crypto/hash.h (limited to 'crypto/hash.h') diff --git a/crypto/hash.h b/crypto/hash.h new file mode 100644 index 000000000000..57b28a986d69 --- /dev/null +++ b/crypto/hash.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Cryptographic API. + * + * Copyright (c) 2023 Herbert Xu + */ +#ifndef _LOCAL_CRYPTO_HASH_H +#define _LOCAL_CRYPTO_HASH_H + +#include +#include + +#include "internal.h" + +static inline int crypto_hash_report_stat(struct sk_buff *skb, + struct crypto_alg *alg, + const char *type) +{ + struct hash_alg_common *halg = __crypto_hash_alg_common(alg); + struct crypto_istat_hash *istat = hash_get_stat(halg); + struct crypto_stat_hash rhash; + + memset(&rhash, 0, sizeof(rhash)); + + strscpy(rhash.type, type, sizeof(rhash.type)); + + rhash.stat_hash_cnt = atomic64_read(&istat->hash_cnt); + rhash.stat_hash_tlen = atomic64_read(&istat->hash_tlen); + rhash.stat_err_cnt = atomic64_read(&istat->err_cnt); + + return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash); +} + +int hash_prepare_alg(struct hash_alg_common *alg); + +#endif /* _LOCAL_CRYPTO_HASH_H */ -- cgit v1.2.3