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-rw-r--r--crypto/aead.c98
1 files changed, 77 insertions, 21 deletions
diff --git a/crypto/aead.c b/crypto/aead.c
index 16991095270d..ffc48a7dfb34 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -8,17 +8,27 @@
*/
#include <crypto/internal/aead.h>
+#include <linux/cryptouser.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/seq_file.h>
-#include <linux/cryptouser.h>
+#include <linux/string.h>
#include <net/netlink.h>
#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)
{
@@ -80,39 +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 crypto_alg *alg = aead->base.__crt_alg;
- unsigned int cryptlen = req->cryptlen;
+ struct aead_alg *alg = crypto_aead_alg(aead);
+ struct crypto_istat_aead *istat;
int ret;
- crypto_stats_get(alg);
+ 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)
ret = -ENOKEY;
else
- ret = crypto_aead_alg(aead)->encrypt(req);
- crypto_stats_aead_encrypt(cryptlen, alg, ret);
- return ret;
+ ret = alg->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 crypto_alg *alg = aead->base.__crt_alg;
- unsigned int cryptlen = req->cryptlen;
+ struct aead_alg *alg = crypto_aead_alg(aead);
+ struct crypto_istat_aead *istat;
int ret;
- crypto_stats_get(alg);
+ 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)
ret = -ENOKEY;
else if (req->cryptlen < crypto_aead_authsize(aead))
ret = -EINVAL;
else
- ret = crypto_aead_alg(aead)->decrypt(req);
- crypto_stats_aead_decrypt(cryptlen, alg, ret);
- return ret;
+ ret = alg->decrypt(req);
+
+ return crypto_aead_errstat(istat, ret);
}
EXPORT_SYMBOL_GPL(crypto_aead_decrypt);
@@ -142,8 +175,8 @@ static int crypto_aead_init_tfm(struct crypto_tfm *tfm)
return 0;
}
-#ifdef CONFIG_NET
-static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg)
+static int __maybe_unused crypto_aead_report(
+ struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_aead raead;
struct aead_alg *aead = container_of(alg, struct aead_alg, base);
@@ -159,12 +192,6 @@ static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg)
return nla_put(skb, CRYPTOCFGA_REPORT_AEAD, sizeof(raead), &raead);
}
-#else
-static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg)
-{
- return -ENOSYS;
-}
-#endif
static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
__maybe_unused;
@@ -188,6 +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,
@@ -195,7 +242,12 @@ static const struct crypto_type crypto_aead_type = {
#ifdef CONFIG_PROC_FS
.show = crypto_aead_show,
#endif
+#ifdef 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,
@@ -219,6 +271,7 @@ EXPORT_SYMBOL_GPL(crypto_alloc_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) >
@@ -232,6 +285,9 @@ 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;
}