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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 ICMP packets.
*/
#ifndef __ICMP_PACKET_H__
#define __ICMP_PACKET_H__
#include "types.h"
#include "packet.h"
/* Create and initialize a new struct packet containing an ICMP
* packet. The 'type_string' identifies the ICMP type. The
* 'code_string' identifies the ICMP code (and NULL means no code was
* provided, in which case we assume a default code of 0).
* The 'protocol' is either IPPROTO_UDP or IPPROTO_TCP.
* The 'tcp_start_sequence' and 'payload_bytes' describe the TCP or UDP
* packet echoed inside the ICMP message. The 'mtu' specifies the MTU
* advertised in "packet is too big" ICMP message, or -1 for no
* MTU. On success, returns a newly-allocated packet. On failure,
* returns NULL and fills in *error with an error message.
*/
extern struct packet *new_icmp_packet(int address_family,
enum direction_t direction,
const char *type_string,
const char *code_string,
int protocol,
u32 tcp_start_sequence,
u32 payload_bytes,
struct ip_info ip_info,
s64 mtu,
s64 echo_id,
char **error);
#endif /* __ICMP_PACKET_H__ */
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