diff options
Diffstat (limited to 'crypto/aead.c')
| -rw-r--r-- | crypto/aead.c | 84 |
1 files changed, 77 insertions, 7 deletions
diff --git a/crypto/aead.c b/crypto/aead.c index 0e75a69189df4c..54906633566a23 100644 --- a/crypto/aead.c +++ b/crypto/aead.c @@ -20,6 +20,15 @@ #include "internal.h" +static inline struct crypto_istat_aead *aead_get_stat(struct aead_alg *alg) +{ +#ifdef CONFIG_CRYPTO_STATS + return &alg->stat; +#else + return NULL; +#endif +} + static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key, unsigned int keylen) { @@ -81,28 +90,62 @@ int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize) } EXPORT_SYMBOL_GPL(crypto_aead_setauthsize); +static inline int crypto_aead_errstat(struct crypto_istat_aead *istat, int err) +{ + if (!IS_ENABLED(CONFIG_CRYPTO_STATS)) + return err; + + if (err && err != -EINPROGRESS && err != -EBUSY) + atomic64_inc(&istat->err_cnt); + + return err; +} + int crypto_aead_encrypt(struct aead_request *req) { struct crypto_aead *aead = crypto_aead_reqtfm(req); + struct aead_alg *alg = crypto_aead_alg(aead); + struct crypto_istat_aead *istat; + int ret; + + istat = aead_get_stat(alg); + + if (IS_ENABLED(CONFIG_CRYPTO_STATS)) { + atomic64_inc(&istat->encrypt_cnt); + atomic64_add(req->cryptlen, &istat->encrypt_tlen); + } if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY) - return -ENOKEY; + ret = -ENOKEY; + else + ret = alg->encrypt(req); - return crypto_aead_alg(aead)->encrypt(req); + return crypto_aead_errstat(istat, ret); } EXPORT_SYMBOL_GPL(crypto_aead_encrypt); int crypto_aead_decrypt(struct aead_request *req) { struct crypto_aead *aead = crypto_aead_reqtfm(req); + struct aead_alg *alg = crypto_aead_alg(aead); + struct crypto_istat_aead *istat; + int ret; - if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY) - return -ENOKEY; + istat = aead_get_stat(alg); - if (req->cryptlen < crypto_aead_authsize(aead)) - return -EINVAL; + if (IS_ENABLED(CONFIG_CRYPTO_STATS)) { + atomic64_inc(&istat->encrypt_cnt); + atomic64_add(req->cryptlen, &istat->encrypt_tlen); + } + + if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY) + ret = -ENOKEY; + else if (req->cryptlen < crypto_aead_authsize(aead)) + ret = -EINVAL; + else + ret = alg->decrypt(req); - return crypto_aead_alg(aead)->decrypt(req); + return crypto_aead_errstat(istat, ret); } EXPORT_SYMBOL_GPL(crypto_aead_decrypt); @@ -172,6 +215,26 @@ static void crypto_aead_free_instance(struct crypto_instance *inst) aead->free(aead); } +static int __maybe_unused crypto_aead_report_stat( + struct sk_buff *skb, struct crypto_alg *alg) +{ + struct aead_alg *aead = container_of(alg, struct aead_alg, base); + struct crypto_istat_aead *istat = aead_get_stat(aead); + struct crypto_stat_aead raead; + + memset(&raead, 0, sizeof(raead)); + + strscpy(raead.type, "aead", sizeof(raead.type)); + + raead.stat_encrypt_cnt = atomic64_read(&istat->encrypt_cnt); + raead.stat_encrypt_tlen = atomic64_read(&istat->encrypt_tlen); + raead.stat_decrypt_cnt = atomic64_read(&istat->decrypt_cnt); + raead.stat_decrypt_tlen = atomic64_read(&istat->decrypt_tlen); + raead.stat_err_cnt = atomic64_read(&istat->err_cnt); + + return nla_put(skb, CRYPTOCFGA_STAT_AEAD, sizeof(raead), &raead); +} + static const struct crypto_type crypto_aead_type = { .extsize = crypto_alg_extsize, .init_tfm = crypto_aead_init_tfm, @@ -182,6 +245,9 @@ static const struct crypto_type crypto_aead_type = { #if IS_ENABLED(CONFIG_CRYPTO_USER) .report = crypto_aead_report, #endif +#ifdef CONFIG_CRYPTO_STATS + .report_stat = crypto_aead_report_stat, +#endif .maskclear = ~CRYPTO_ALG_TYPE_MASK, .maskset = CRYPTO_ALG_TYPE_MASK, .type = CRYPTO_ALG_TYPE_AEAD, @@ -211,6 +277,7 @@ EXPORT_SYMBOL_GPL(crypto_has_aead); static int aead_prepare_alg(struct aead_alg *alg) { + struct crypto_istat_aead *istat = aead_get_stat(alg); struct crypto_alg *base = &alg->base; if (max3(alg->maxauthsize, alg->ivsize, alg->chunksize) > @@ -224,6 +291,9 @@ static int aead_prepare_alg(struct aead_alg *alg) base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK; base->cra_flags |= CRYPTO_ALG_TYPE_AEAD; + if (IS_ENABLED(CONFIG_CRYPTO_STATS)) + memset(istat, 0, sizeof(*istat)); + return 0; } |