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/******************************************************************************
* Copyright (c) 2004, 2008 IBM Corporation
* All rights reserved.
* This program and the accompanying materials
* are made available under the terms of the BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/bsd-license.php
*
* Contributors:
* IBM Corporation - initial implementation
*****************************************************************************/
#ifndef _UDP_H
#define _UDP_H
#include <stdint.h>
#define IPTYPE_UDP 17
#define UDPPORT_BOOTPS 67 /**< UDP port of BootP/DHCP-server */
#define UDPPORT_BOOTPC 68 /**< UDP port of BootP/DHCP-client */
#define UDPPORT_DNSS 53 /**< UDP port of DNS-server */
#define UDPPORT_DNSC 32769 /**< UDP port of DNS-client */
#define UDPPORT_TFTPC 2001 /**< UDP port of TFTP-client */
#define UDPPORT_DHCPV6C 546 /**< UDP port of DHCPv6-client */
/** \struct udphdr
* A header for UDP-packets.
* For more information see RFC 768.
*/
struct udphdr {
uint16_t uh_sport; /**< Source port */
uint16_t uh_dport; /**< Destinantion port */
uint16_t uh_ulen; /**< Length in octets, incl. this header and data */
uint16_t uh_sum; /**< Checksum */
};
typedef struct udphdr udp_hdr_t;
typedef int32_t *(*handle_upper_udp_t)(uint8_t *, int32_t);
typedef void *(*handle_upper_udp_dun_t)(uint8_t);
/* Handles UDP-packets that are detected by any network layer. */
extern int8_t handle_udp(int fd, uint8_t * udp_packet, uint32_t packetsize);
/* Handles UDP related ICMP-Dest.Unreachable packets that are detected by
* the network layers. */
extern void handle_udp_dun(uint8_t * udp_packet, uint32_t packetsize, uint8_t err_code);
/* fills udp header */
extern void fill_udphdr(uint8_t *packet, uint16_t packetsize,
uint16_t src_port, uint16_t dest_port);
#endif
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