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+/*
+ * Copyright 2013 Google Inc.
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+/*
+ * Author: ncardwell@google.com (Neal Cardwell)
+ *
+ * Interface for a module to execute a packet event from a test script.
+ */
+
+#ifndef __RUN_PACKET_H__
+#define __RUN_PACKET_H__
+
+#include "types.h"
+
+#include "script.h"
+
+struct event;
+struct packet;
+struct socket;
+struct state;
+
+/* Internal state for the packet-handling module. */
+struct packets {
+ int next_ephemeral_port; /* cached port to use, or -1 */
+};
+
+/* Allocate and return internal state for the packets module. */
+extern struct packets *packets_new(const struct state *state);
+
+/* Tear down packets module state and free up the resources it has allocated. */
+extern void packets_free(struct packets *packets);
+
+/* Execute the packet event. On success, return STATUS_OK; on error
+ * return STATUS_ERR and fill in a malloc-allocated error message in
+ * *error.
+ */
+extern int run_packet_event(struct state *state,
+ struct event *event,
+ struct packet *packet,
+ char **error);
+
+/* Inject a TCP RST packet to clear the connection state out of the kernel. */
+extern int reset_connection(struct state *state,
+ struct socket *socket);
+
+#endif /* __RUN_PACKET_H__ */