crypto: algif_skcipher - Load TX SG list after waiting

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

diff --git a/crypto/gcm.c b/crypto/gcm.c
index 1a25263..1e33561 100644 (file)
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -44,6 +44,7 @@ struct crypto_rfc4543_ctx {
 
 struct crypto_rfc4543_req_ctx {
        u8 auth_tag[16];
+       u8 assocbuf[32];
        struct scatterlist cipher[1];
        struct scatterlist payload[2];
        struct scatterlist assoc[2];
@@ -1142,9 +1143,19 @@ static struct aead_request *crypto_rfc4543_crypt(struct aead_request *req,
        scatterwalk_crypto_chain(payload, dst, vdst == req->iv + 8, 2);
        assoclen += 8 + req->cryptlen - (enc ? 0 : authsize);
 
-       sg_init_table(assoc, 2);
-       sg_set_page(assoc, sg_page(req->assoc), req->assoc->length,
-                   req->assoc->offset);
+       if (req->assoc->length == req->assoclen) {
+               sg_init_table(assoc, 2);
+               sg_set_page(assoc, sg_page(req->assoc), req->assoc->length,
+                           req->assoc->offset);
+       } else {
+               BUG_ON(req->assoclen > sizeof(rctx->assocbuf));
+
+               scatterwalk_map_and_copy(rctx->assocbuf, req->assoc, 0,
+                                        req->assoclen, 0);
+
+               sg_init_table(assoc, 2);
+               sg_set_buf(assoc, rctx->assocbuf, req->assoclen);
+       }
        scatterwalk_crypto_chain(assoc, payload, 0, 2);
 
        aead_request_set_tfm(subreq, ctx->child);
@@ -1363,6 +1374,7 @@ module_exit(crypto_gcm_module_exit);
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Galois/Counter Mode");
 MODULE_AUTHOR("Mikko Herranen <mh1@iki.fi>");
-MODULE_ALIAS("gcm_base");
-MODULE_ALIAS("rfc4106");
-MODULE_ALIAS("rfc4543");
+MODULE_ALIAS_CRYPTO("gcm_base");
+MODULE_ALIAS_CRYPTO("rfc4106");
+MODULE_ALIAS_CRYPTO("rfc4543");
+MODULE_ALIAS_CRYPTO("gcm");