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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 module for formatting TCP packets.
+ */
+
+#ifndef __TCP_PACKET_H__
+#define __TCP_PACKET_H__
+
+#include "types.h"
+
+#include "packet.h"
+#include "tcp_options.h"
+
+/* Create and initialize a new struct packet containing a TCP segment.
+ * The 'flags' are a tcpdump-style sequence of TCP header flags.
+ * On success, returns a newly-allocated packet. On failure, returns NULL
+ * and fills in *error with an error message.
+ */
+extern struct packet *new_tcp_packet(int address_family,
+ enum direction_t direction,
+ struct ip_info ip_info,
+ u16 src_port,
+ u16 dst_port,
+ const char *flags,
+ u32 start_sequence,
+ u16 tcp_payload_bytes,
+ u32 ack_sequence,
+ s32 window,
+ u16 urg_ptr,
+ const struct tcp_options *tcp_options,
+ char **error);
+#endif /* __TCP_PACKET_H__ */