/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* 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 _UAPI_LINUX_UDP_H
#define _UAPI_LINUX_UDP_H
#include <linux/types.h>
struct udphdr {
__be16 source;
__be16 dest;
__be16 len;
__sum16 check;
};
/* UDP socket options */
#define UDP_CORK 1 /* Never send partially complete segments */
#define UDP_ENCAP 100 /* Set the socket to accept encapsulated packets */
#define UDP_NO_CHECK6_TX 101 /* Disable sending checksum for UDP6X */
#define UDP_NO_CHECK6_RX 102 /* Disable accepting checksum for UDP6 */
#define UDP_SEGMENT 103 /* Set GSO segmentation size */
#define UDP_GRO 104 /* This socket can receive UDP GRO packets */
/* UDP encapsulation types */
#define UDP_ENCAP_ESPINUDP_NON_IKE 1 /* unused draft-ietf-ipsec-nat-t-ike-00/01 */
#define UDP_ENCAP_ESPINUDP 2 /* draft-ietf-ipsec-udp-encaps-06 */
#define UDP_ENCAP_L2TPINUDP 3 /* rfc2661 */
#define UDP_ENCAP_GTP0 4 /* GSM TS 09.60 */
#define UDP_ENCAP_GTP1U 5 /* 3GPP TS 29.060 */
#define UDP_ENCAP_RXRPC 6
#define TCP_ENCAP_ESPINTCP 7 /* Yikes, this is really xfrm encap types. */
#define UDP_ENCAP_OVPNINUDP 8 /* OpenVPN traffic */
#endif /* _UAPI_LINUX_UDP_H */
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