1 /* Copyright (C) 1991-2022 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 /* 19 * Copyright (C) 1982, 1986 Regents of the University of California. 20 * All rights reserved. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the above copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 4. Neither the name of the University nor the names of its contributors 31 * may be used to endorse or promote products derived from this software 32 * without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 35 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 36 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 37 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 38 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 39 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 40 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 42 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 43 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 44 * SUCH DAMAGE. 45 */ 46 47 #ifndef __NETINET_UDP_H 48 #define __NETINET_UDP_H 1 49 50 #include <sys/types.h> 51 #include <stdint.h> 52 53 /* UDP header as specified by RFC 768, August 1980. */ 54 55 struct udphdr 56 { 57 __extension__ union 58 { 59 struct 60 { 61 uint16_t uh_sport; /* source port */ 62 uint16_t uh_dport; /* destination port */ 63 uint16_t uh_ulen; /* udp length */ 64 uint16_t uh_sum; /* udp checksum */ 65 }; 66 struct 67 { 68 uint16_t source; 69 uint16_t dest; 70 uint16_t len; 71 uint16_t check; 72 }; 73 }; 74 }; 75 76 /* UDP socket options */ 77 #define UDP_CORK 1 /* Never send partially complete segments. */ 78 #define UDP_ENCAP 100 /* Set the socket to accept 79 encapsulated packets. */ 80 #define UDP_NO_CHECK6_TX 101 /* Disable sending checksum for UDP 81 over IPv6. */ 82 #define UDP_NO_CHECK6_RX 102 /* Disable accepting checksum for UDP 83 over IPv6. */ 84 #define UDP_SEGMENT 103 /* Set GSO segmentation size. */ 85 #define UDP_GRO 104 /* This socket can receive UDP GRO packets. */ 86 87 /* UDP encapsulation types */ 88 #define UDP_ENCAP_ESPINUDP_NON_IKE 1 /* draft-ietf-ipsec-nat-t-ike-00/01 */ 89 #define UDP_ENCAP_ESPINUDP 2 /* draft-ietf-ipsec-udp-encaps-06 */ 90 #define UDP_ENCAP_L2TPINUDP 3 /* rfc2661 */ 91 #define UDP_ENCAP_GTP0 4 /* GSM TS 09.60 */ 92 #define UDP_ENCAP_GTP1U 5 /* 3GPP TS 29.060 */ 93 94 #define SOL_UDP 17 /* sockopt level for UDP */ 95 96 #endif /* netinet/udp.h */ 97