1 files changed, 78 insertions, 0 deletions
diff --git a/src/libcharon/plugins/ha/ha_cache.h b/src/libcharon/plugins/ha/ha_cache.h
new file mode 100644
index 000000000..39f1947a8
--- /dev/null
+++ b/src/libcharon/plugins/ha/ha_cache.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2010 Martin Willi
+ * Copyright (C) 2010 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup ha_cache ha_cache
+ * @{ @ingroup ha
+ */
+
+#ifndef HA_CACHE_H_
+#define HA_CACHE_H_
+
+typedef struct ha_cache_t ha_cache_t;
+
+#include "ha_message.h"
+#include "ha_kernel.h"
+#include "ha_socket.h"
+
+#include <utils/enumerator.h>
+
+#include <sa/ike_sa.h>
+
+/**
+ * HA message caching facility, allows reintegration of new nodes.
+ */
+struct ha_cache_t {
+
+	/**
+	 * Cache an IKE specific message.
+	 *
+	 * @param ike_sa		associated IKE_SA
+	 * @param message		message to cache
+	 */
+	void (*cache)(ha_cache_t *this, ike_sa_t *ike_sa, ha_message_t *message);
+
+	/**
+	 * Delete a cache entry for an IKE_SA.
+	 *
+	 * @param ike_sa		cache entry to delete
+	 */
+	void (*delete)(ha_cache_t *this, ike_sa_t *ike_sa);
+
+	/**
+	 * Resync a segment to the node using the cached messages.
+	 *
+	 * @param segment		segment to resync
+	 */
+	void (*resync)(ha_cache_t *this, u_int segment);
+
+	/**
+	 * Destroy a ha_cache_t.
+	 */
+	void (*destroy)(ha_cache_t *this);
+};
+
+/**
+ * Create a ha_cache instance.
+ *
+ * @param kernel		kernel helper
+ * @param socket		socket to send resync messages
+ * @param resync 		request a resync during startup?
+ * @param count			total number of segments
+ */
+ha_cache_t *ha_cache_create(ha_kernel_t *kernel, ha_socket_t *socket,
+							bool resync, u_int count);
+
+#endif /** HA_CACHE_H_ @}*/