[PATCH v3 08/17] crypto: Add userspace report for ahash type algorithms

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Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
---
 crypto/ahash.c             |   21 +++++++++++++++++++++
 include/linux/cryptouser.h |    1 +
 2 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/crypto/ahash.c b/crypto/ahash.c
index f669822..d5798fe 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -21,6 +21,8 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/seq_file.h>
+#include <linux/cryptouser.h>
+#include <net/netlink.h>
 
 #include "internal.h"
 
@@ -397,6 +399,24 @@ static unsigned int crypto_ahash_extsize(struct crypto_alg *alg)
 	return sizeof(struct crypto_shash *);
 }
 
+static int crypto_ahash_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct crypto_report_hash rhash;
+
+	snprintf(rhash.type, CRYPTO_MAX_ALG_NAME, "%s", "ahash");
+
+	rhash.blocksize = alg->cra_blocksize;
+	rhash.digestsize = __crypto_hash_alg_common(alg)->digestsize;
+
+	NLA_PUT(skb, CRYPTOCFGA_REPORT_AHASH,
+		sizeof(struct crypto_report_hash), &rhash);
+
+	return 0;
+
+nla_put_failure:
+	return -EMSGSIZE;
+}
+
 static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
 	__attribute__ ((unused));
 static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
@@ -415,6 +435,7 @@ const struct crypto_type crypto_ahash_type = {
 #ifdef CONFIG_PROC_FS
 	.show = crypto_ahash_show,
 #endif
+	.report = crypto_ahash_report,
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_AHASH_MASK,
 	.type = CRYPTO_ALG_TYPE_AHASH,
diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h
index c94649f..aedee33 100644
--- a/include/linux/cryptouser.h
+++ b/include/linux/cryptouser.h
@@ -38,6 +38,7 @@ enum crypto_attr_type_t {
 	CRYPTOCFGA_PRIORITY_VAL,	/* __u32 */
 	CRYPTOCFGA_REPORT_LARVAL,	/* struct crypto_report_larval */
 	CRYPTOCFGA_REPORT_SHASH,	/* struct crypto_report_hash */
+	CRYPTOCFGA_REPORT_AHASH,	/* struct crypto_report_hash */
 	__CRYPTOCFGA_MAX
 
 #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
-- 
1.7.0.4

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