crypto: acomp - add asynchronous compression api

Add acomp, an asynchronous compression api that uses scatterlist
buffers.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 19 insertions, 0 deletions

diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index 1c5705481c69..a90404a0c5ff 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -112,6 +112,21 @@ nla_put_failure:
         return -EMSGSIZE;
 }
 
+static int crypto_report_acomp(struct sk_buff *skb, struct crypto_alg *alg)
+{
+        struct crypto_report_acomp racomp;
+
+        strncpy(racomp.type, "acomp", sizeof(racomp.type));
+
+        if (nla_put(skb, CRYPTOCFGA_REPORT_ACOMP,
+                    sizeof(struct crypto_report_acomp), &racomp))
+                goto nla_put_failure;
+        return 0;
+
+nla_put_failure:
+        return -EMSGSIZE;
+}
+
 static int crypto_report_akcipher(struct sk_buff *skb, struct crypto_alg *alg)
 {
         struct crypto_report_akcipher rakcipher;
@@ -186,7 +201,11 @@ static int crypto_report_one(struct crypto_alg *alg,
                         goto nla_put_failure;
 
                 break;
+        case CRYPTO_ALG_TYPE_ACOMPRESS:
+                if (crypto_report_acomp(skb, alg))
+                        goto nla_put_failure;
 
+                break;
         case CRYPTO_ALG_TYPE_AKCIPHER:
                 if (crypto_report_akcipher(skb, alg))
                         goto nla_put_failure;