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authorSteffen Klassert <steffen.klassert@secunet.com>2011-09-27 07:44:27 +0200
committerMarcel Ziswiler <marcel.ziswiler@toradex.com>2017-12-21 01:57:30 +0100
commit06527fd179c36d599cf58f6d4308e7e315eb8808 (patch)
treef416bc6fc5ab80ddde9a34f2d2adebcaa3b8bb41
parentcae83d95d403de87a5e18aa48a1f475142c311f4 (diff)
crypto: Add userspace report for aead type algorithms
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 6ad414fe710d4fd3a8c8c6c2ad8fefcfcc207968) Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com> Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
-rw-r--r--crypto/aead.c25
-rw-r--r--include/linux/cryptouser.h9
2 files changed, 34 insertions, 0 deletions
diff --git a/crypto/aead.c b/crypto/aead.c
index 6729e8f..bb641bd 100644
--- a/crypto/aead.c
+++ b/crypto/aead.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"
@@ -109,6 +111,28 @@ static int crypto_init_aead_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
return 0;
}
+static int crypto_aead_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", "aead");
+ snprintf(raead.geniv, CRYPTO_MAX_ALG_NAME, "%s",
+ aead->geniv ?: "<built-in>");
+
+ raead.blocksize = alg->cra_blocksize;
+ raead.maxauthsize = aead->maxauthsize;
+ raead.ivsize = aead->ivsize;
+
+ NLA_PUT(skb, CRYPTOCFGA_REPORT_AEAD,
+ sizeof(struct crypto_report_aead), &raead);
+
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+
static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
__attribute__ ((unused));
static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
@@ -130,6 +154,7 @@ const struct crypto_type crypto_aead_type = {
#ifdef CONFIG_PROC_FS
.show = crypto_aead_show,
#endif
+ .report = crypto_aead_report,
};
EXPORT_SYMBOL_GPL(crypto_aead_type);
diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h
index a96a1a1..48030c7 100644
--- a/include/linux/cryptouser.h
+++ b/include/linux/cryptouser.h
@@ -39,6 +39,7 @@ enum crypto_attr_type_t {
CRYPTOCFGA_REPORT_LARVAL, /* struct crypto_report_larval */
CRYPTOCFGA_REPORT_HASH, /* struct crypto_report_hash */
CRYPTOCFGA_REPORT_BLKCIPHER, /* struct crypto_report_blkcipher */
+ CRYPTOCFGA_REPORT_AEAD, /* struct crypto_report_aead */
__CRYPTOCFGA_MAX
#define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
@@ -72,3 +73,11 @@ struct crypto_report_blkcipher {
unsigned int max_keysize;
unsigned int ivsize;
};
+
+struct crypto_report_aead {
+ char type[CRYPTO_MAX_NAME];
+ char geniv[CRYPTO_MAX_NAME];
+ unsigned int blocksize;
+ unsigned int maxauthsize;
+ unsigned int ivsize;
+};