crypto: ccp - Enable support for AES GCM on v5 CCPs

A version 5 device provides the primitive commands
required for AES GCM. This patch adds support for
en/decryption.

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/crypto/ccp/ccp-crypto.h b/drivers/crypto/ccp/ccp-crypto.h
index 8c8bd3ff9f48..dd5bf15f06e5 100644
--- a/drivers/crypto/ccp/ccp-crypto.h
+++ b/drivers/crypto/ccp/ccp-crypto.h
@@ -19,6 +19,8 @@
 #include <linux/ccp.h>
 #include <crypto/algapi.h>
 #include <crypto/aes.h>
+#include <crypto/internal/aead.h>
+#include <crypto/aead.h>
 #include <crypto/ctr.h>
 #include <crypto/hash.h>
 #include <crypto/sha.h>
@@ -35,6 +37,14 @@ struct ccp_crypto_ablkcipher_alg {
 	struct crypto_alg alg;
 };
 
+struct ccp_crypto_aead {
+	struct list_head entry;
+
+	u32 mode;
+
+	struct aead_alg alg;
+};
+
 struct ccp_crypto_ahash_alg {
 	struct list_head entry;
 
@@ -97,6 +107,9 @@ struct ccp_aes_req_ctx {
 	struct scatterlist iv_sg;
 	u8 iv[AES_BLOCK_SIZE];
 
+	struct scatterlist tag_sg;
+	u8 tag[AES_BLOCK_SIZE];
+
 	/* Fields used for RFC3686 requests */
 	u8 *rfc3686_info;
 	u8 rfc3686_iv[AES_BLOCK_SIZE];
@@ -233,6 +246,7 @@ struct scatterlist *ccp_crypto_sg_table_add(struct sg_table *table,
 int ccp_register_aes_algs(struct list_head *head);
 int ccp_register_aes_cmac_algs(struct list_head *head);
 int ccp_register_aes_xts_algs(struct list_head *head);
+int ccp_register_aes_aeads(struct list_head *head);
 int ccp_register_sha_algs(struct list_head *head);
 int ccp_register_des3_algs(struct list_head *head);