64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
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/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Definitions for the UDP protocol.
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*
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* Version: @(#)udp.h 1.0.2 04/28/93
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*
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* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_UDP_H
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#define _LINUX_UDP_H
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#include <linux/types.h>
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struct udphdr {
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__u16 source;
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__u16 dest;
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__u16 len;
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__u16 check;
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};
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/* UDP socket options */
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#define UDP_CORK 1 /* Never send partially complete segments */
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#define UDP_ENCAP 100 /* Set the socket to accept encapsulated packets */
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/* UDP encapsulation types */
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#define UDP_ENCAP_ESPINUDP_NON_IKE 1 /* draft-ietf-ipsec-nat-t-ike-00/01 */
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#define UDP_ENCAP_ESPINUDP 2 /* draft-ietf-ipsec-udp-encaps-06 */
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#ifdef __KERNEL__
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#include <linux/config.h>
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#include <net/sock.h>
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#include <linux/ip.h>
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struct udp_sock {
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/* inet_sock has to be the first member */
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struct inet_sock inet;
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int pending; /* Any pending frames ? */
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unsigned int corkflag; /* Cork is required */
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__u16 encap_type; /* Is this an Encapsulation socket? */
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/*
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* Following member retains the infomation to create a UDP header
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* when the socket is uncorked.
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*/
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__u16 len; /* total length of pending frames */
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};
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static inline struct udp_sock *udp_sk(const struct sock *sk)
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{
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return (struct udp_sock *)sk;
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}
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#endif
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#endif /* _LINUX_UDP_H */
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