[PATCH v2 11/15] crypto: Add userspace report for nivaead type algorithms

[Steffen Klassert]

Signed-off-by: Steffen Klassert <steffen.klass...@secunet.com>
---
 crypto/aead.c              |   25 +++++++++++++++++++++++++
 include/linux/cryptouser.h |    1 +
 2 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/crypto/aead.c b/crypto/aead.c
index 17fec4a..ee5e060 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -192,6 +192,30 @@ 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)
+{
+       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)
@@ -213,6 +237,7 @@ const struct crypto_type crypto_nivaead_type = {
 #ifdef CONFIG_PROC_FS
        .show = crypto_nivaead_show,
 #endif
+       .report = crypto_nivaead_report,
 };
 EXPORT_SYMBOL_GPL(crypto_nivaead_type);
 
diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h
index c41acbd..ecd13ec 100644
--- a/include/linux/cryptouser.h
+++ b/include/linux/cryptouser.h
@@ -40,6 +40,7 @@ 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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