[PATCH 12/16] crypto: Add userspace report for nivaead type algorithms

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Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
---
 crypto/aead.c              |   29 +++++++++++++++++++++++++++++
 include/linux/cryptouser.h |    1 +
 2 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/crypto/aead.c b/crypto/aead.c
index 25793b7..218ecc8 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -196,6 +196,32 @@ static int crypto_init_nivaead_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
 	return 0;
 }
 
+static int crypto_nivaead_report(struct sk_buff *skb, struct crypto_alg *alg)
+	__attribute__ ((unused));
+static int crypto_nivaead_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct crypto_report_aead raead;
+	struct aead_alg *aead = &alg->cra_aead;
+
+	snprintf(raead.type, CRYPTO_MAX_ALG_NAME, "%s", "nivaead");
+	snprintf(raead.geniv, CRYPTO_MAX_ALG_NAME, "%s", aead->geniv);
+	snprintf(raead.async, CRYPTO_MAX_ALG_NAME, "%s",
+		 alg->cra_flags & CRYPTO_ALG_ASYNC ? "yes" : "no");
+
+	raead.blocksize = alg->cra_blocksize;
+	raead.maxauthsize = aead->maxauthsize;
+	raead.ivsize = aead->ivsize;
+
+	NLA_PUT(skb, CRYPTOCFGA_REPORT_NIVAEAD,
+		sizeof(struct crypto_report_aead), &raead);
+
+	return 0;
+
+nla_put_failure:
+	return -EMSGSIZE;
+}
+
+
 static void crypto_nivaead_show(struct seq_file *m, struct crypto_alg *alg)
 	__attribute__ ((unused));
 static void crypto_nivaead_show(struct seq_file *m, struct crypto_alg *alg)
@@ -217,6 +243,9 @@ const struct crypto_type crypto_nivaead_type = {
 #ifdef CONFIG_PROC_FS
 	.show = crypto_nivaead_show,
 #endif
+#ifdef CONFIG_CRYPTO_USER
+	.report = crypto_nivaead_report,
+#endif
 };
 EXPORT_SYMBOL_GPL(crypto_nivaead_type);
 
diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h
index 04762d7..fc660c7 100644
--- a/include/linux/cryptouser.h
+++ b/include/linux/cryptouser.h
@@ -41,6 +41,7 @@ enum crypto_attr_type_t {
 	CRYPTOCFGA_REPORT_ABLKCIPHER,	/* struct crypto_report_ablkcipher */
 	CRYPTOCFGA_REPORT_GIVCIPHER,	/* struct crypto_report_ablkcipher */
 	CRYPTOCFGA_REPORT_AEAD,		/* struct crypto_report_aead */
+	CRYPTOCFGA_REPORT_NIVAEAD,	/* struct crypto_report_aead */
 	__CRYPTOCFGA_MAX
 
 #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
-- 
1.7.0.4

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