crypto: Add userspace report for larval type algorithms

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

2 files changed, 17 insertions, 0 deletions

diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index aa67c74ee136..8a0c5c6c6589 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -84,11 +84,23 @@ static int crypto_report_one(struct crypto_alg *alg,
 
         NLA_PUT_U32(skb, CRYPTOCFGA_PRIORITY_VAL, alg->cra_priority);
 
+        if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
+                struct crypto_report_larval rl;
+
+                snprintf(rl.type, CRYPTO_MAX_ALG_NAME, "%s", "larval");
+
+                NLA_PUT(skb, CRYPTOCFGA_REPORT_LARVAL,
+                        sizeof(struct crypto_report_larval), &rl);
+
+                goto out;
+        }
+
         if (alg->cra_type && alg->cra_type->report) {
                 if (alg->cra_type->report(skb, alg))
                         goto nla_put_failure;
         }
 
+out:
         return 0;
 
 nla_put_failure:
diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h
index b874e3879d81..7a849b4c3b82 100644
--- a/include/linux/cryptouser.h
+++ b/include/linux/cryptouser.h
@@ -36,6 +36,7 @@ enum {
 enum crypto_attr_type_t {
         CRYPTOCFGA_UNSPEC,
         CRYPTOCFGA_PRIORITY_VAL,        /* __u32 */
+        CRYPTOCFGA_REPORT_LARVAL,       /* struct crypto_report_larval */
         __CRYPTOCFGA_MAX
 
 #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
@@ -50,3 +51,7 @@ struct crypto_user_alg {
         __u32 cru_refcnt;
         __u32 cru_flags;
 };
+
+struct crypto_report_larval {
+        char type[CRYPTO_MAX_NAME];
+};