crypto: gcm - fix rfc4543 to handle async crypto correctly

[pandora-kernel.git] / crypto / gcm.c

diff --git a/crypto/gcm.c b/crypto/gcm.c
index 1e33561..cd39a68 100644 (file)
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -1103,6 +1103,21 @@ static int crypto_rfc4543_setauthsize(struct crypto_aead *parent,
        return crypto_aead_setauthsize(ctx->child, authsize);
 }
 
+static void crypto_rfc4543_done(struct crypto_async_request *areq, int err)
+{
+       struct aead_request *req = areq->data;
+       struct crypto_aead *aead = crypto_aead_reqtfm(req);
+       struct crypto_rfc4543_req_ctx *rctx = crypto_rfc4543_reqctx(req);
+
+       if (!err) {
+               scatterwalk_map_and_copy(rctx->auth_tag, req->dst,
+                                        req->cryptlen,
+                                        crypto_aead_authsize(aead), 1);
+       }
+
+       aead_request_complete(req, err);
+}
+
 static struct aead_request *crypto_rfc4543_crypt(struct aead_request *req,
                                                 int enc)
 {
@@ -1159,8 +1174,8 @@ static struct aead_request *crypto_rfc4543_crypt(struct aead_request *req,
        scatterwalk_crypto_chain(assoc, payload, 0, 2);
 
        aead_request_set_tfm(subreq, ctx->child);
-       aead_request_set_callback(subreq, req->base.flags, req->base.complete,
-                                 req->base.data);
+       aead_request_set_callback(subreq, req->base.flags, crypto_rfc4543_done,
+                                 req);
        aead_request_set_crypt(subreq, cipher, cipher, enc ? 0 : authsize, iv);
        aead_request_set_assoc(subreq, assoc, assoclen);