crypto: Add a report function pointer to crypto_type

We add a report function pointer to struct crypto_type. This function
pointer is used from the crypto userspace configuration API to report
crypto algorithms to userspace.

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

2 files changed, 7 insertions, 0 deletions

diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index 513cfe7bc3ba..aa67c74ee136 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -84,6 +84,11 @@ static int crypto_report_one(struct crypto_alg *alg,
 
         NLA_PUT_U32(skb, CRYPTOCFGA_PRIORITY_VAL, alg->cra_priority);
 
+        if (alg->cra_type && alg->cra_type->report) {
+                if (alg->cra_type->report(skb, alg))
+                        goto nla_put_failure;
+        }
+
         return 0;
 
 nla_put_failure:
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 59c3e5bd2c06..ecc721def10c 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -15,6 +15,7 @@
 #include <linux/crypto.h>
 #include <linux/list.h>
 #include <linux/kernel.h>
+#include <linux/skbuff.h>
 
 struct module;
 struct rtattr;
@@ -26,6 +27,7 @@ struct crypto_type {
         int (*init)(struct crypto_tfm *tfm, u32 type, u32 mask);
         int (*init_tfm)(struct crypto_tfm *tfm);
         void (*show)(struct seq_file *m, struct crypto_alg *alg);
+        int (*report)(struct sk_buff *skb, struct crypto_alg *alg);
         struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask);
 
         unsigned int type;