agent-at: Improve comments

Change-Id: Ica1479c4ccac93ff153c0e0bf79a3eab6ae882f9
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 17 insertions, 4 deletions

diff --git a/src/data.h b/src/data.h
index 8bd35b3..ef387f8 100644
--- a/src/data.h
+++ b/src/data.h
@@ -31,11 +31,24 @@
 typedef struct data_key data_key_t;
 typedef struct data_value data_value_t;
 
+enum data_keyidx {
+	KeyIdx_Client,
+	KeyIdx_Session,
+	KeyIdx_User,
+	KeyIdx_Permission,
+	KeyIdx_Count
+};
+
 struct data_key {
-	const char *client;
-	const char *session;
-	const char *user;
-	const char *permission;
+	union {
+		struct {
+			const char *client;
+			const char *session;
+			const char *user;
+			const char *permission;
+		};
+		const char *keys[KeyIdx_Count];
+	};
 };
 
 struct data_value {