48 lines · c
1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */2/*3 * INET An implementation of the TCP/IP protocol suite for the LINUX4 * operating system. INET is implemented using the BSD Socket5 * interface as the means of communication with the user level.6 *7 * Definitions for the UDP protocol.8 *9 * Version: @(#)udp.h 1.0.2 04/28/9310 *11 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>12 *13 * This program is free software; you can redistribute it and/or14 * modify it under the terms of the GNU General Public License15 * as published by the Free Software Foundation; either version16 * 2 of the License, or (at your option) any later version.17 */18#ifndef _UAPI_LINUX_UDP_H19#define _UAPI_LINUX_UDP_H20 21#include <linux/types.h>22 23struct udphdr {24 __be16 source;25 __be16 dest;26 __be16 len;27 __sum16 check;28};29 30/* UDP socket options */31#define UDP_CORK 1 /* Never send partially complete segments */32#define UDP_ENCAP 100 /* Set the socket to accept encapsulated packets */33#define UDP_NO_CHECK6_TX 101 /* Disable sending checksum for UDP6X */34#define UDP_NO_CHECK6_RX 102 /* Disable accpeting checksum for UDP6 */35#define UDP_SEGMENT 103 /* Set GSO segmentation size */36#define UDP_GRO 104 /* This socket can receive UDP GRO packets */37 38/* UDP encapsulation types */39#define UDP_ENCAP_ESPINUDP_NON_IKE 1 /* unused draft-ietf-ipsec-nat-t-ike-00/01 */40#define UDP_ENCAP_ESPINUDP 2 /* draft-ietf-ipsec-udp-encaps-06 */41#define UDP_ENCAP_L2TPINUDP 3 /* rfc2661 */42#define UDP_ENCAP_GTP0 4 /* GSM TS 09.60 */43#define UDP_ENCAP_GTP1U 5 /* 3GPP TS 29.060 */44#define UDP_ENCAP_RXRPC 645#define TCP_ENCAP_ESPINTCP 7 /* Yikes, this is really xfrm encap types. */46 47#endif /* _UAPI_LINUX_UDP_H */48