crypto: Add userspace report for givcipher type algorithms

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

1 files changed, 23 insertions, 0 deletions

diff --git a/crypto/ablkcipher.c b/crypto/ablkcipher.c
index 5ea49ad3787e..a816f24f2d52 100644
--- a/crypto/ablkcipher.c
+++ b/crypto/ablkcipher.c
@@ -457,6 +457,28 @@ static int crypto_init_givcipher_ops(struct crypto_tfm *tfm, u32 type,
         return 0;
 }
 
+static int crypto_givcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+        struct crypto_report_blkcipher rblkcipher;
+
+        snprintf(rblkcipher.type, CRYPTO_MAX_ALG_NAME, "%s", "givcipher");
+        snprintf(rblkcipher.geniv, CRYPTO_MAX_ALG_NAME, "%s",
+                 alg->cra_ablkcipher.geniv ?: "<built-in>");
+
+        rblkcipher.blocksize = alg->cra_blocksize;
+        rblkcipher.min_keysize = alg->cra_ablkcipher.min_keysize;
+        rblkcipher.max_keysize = alg->cra_ablkcipher.max_keysize;
+        rblkcipher.ivsize = alg->cra_ablkcipher.ivsize;
+
+        NLA_PUT(skb, CRYPTOCFGA_REPORT_BLKCIPHER,
+                sizeof(struct crypto_report_blkcipher), &rblkcipher);
+
+        return 0;
+
+nla_put_failure:
+        return -EMSGSIZE;
+}
+
 static void crypto_givcipher_show(struct seq_file *m, struct crypto_alg *alg)
         __attribute__ ((unused));
 static void crypto_givcipher_show(struct seq_file *m, struct crypto_alg *alg)
@@ -479,6 +501,7 @@ const struct crypto_type crypto_givcipher_type = {
 #ifdef CONFIG_PROC_FS
         .show = crypto_givcipher_show,
 #endif
+        .report = crypto_givcipher_report,
 };
 EXPORT_SYMBOL_GPL(crypto_givcipher_type);