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/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
* interface as the means of communication with the user level.
*
* Definitions for the UDP protocol.
*
* Version: @(#)udp.h 1.0.2 04/28/93
*
* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
*
* 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.
*/
#ifndef _LINUX_UDP_H
#define _LINUX_UDP_H
#include <linux/types.h>
struct udphdr {
__u16 source;
__u16 dest;
__u16 len;
__u16 check;
};
/* UDP socket options */
#define UDP_CORK 1 /* Never send partially complete segments */
#define UDP_ENCAP 100 /* Set the socket to accept encapsulated packets */
/* UDP encapsulation types */
#define UDP_ENCAP_ESPINUDP 2 /* draft-ietf-ipsec-udp-encaps-06 */
#ifdef __KERNEL__
#include <linux/config.h>
#include <net/sock.h>
#include <linux/ip.h>
struct udp_opt {
int pending; /* Any pending frames ? */
unsigned int corkflag; /* Cork is required */
__u16 encap_type; /* Is this an Encapsulation socket? */
/*
* Following members retains the infomation to create a UDP header
* when the socket is uncorked.
*/
u32 saddr; /* source address */
u32 daddr; /* destination address */
__u16 sport; /* source port */
__u16 dport; /* destination port */
__u16 len; /* total length of pending frames */
};
/* WARNING: don't change the layout of the members in udp_sock! */
struct udp_sock {
struct sock sk;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
struct ipv6_pinfo *pinet6;
#endif
struct inet_opt inet;
struct udp_opt udp;
};
#define udp_sk(__sk) (&((struct udp_sock *)__sk)->udp)
#endif
#endif /* _LINUX_UDP_H */
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