sysdeps/gnu/netinet/udp.h

   1 /* Copyright (C) 1991-2014 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    <http://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 <features.h>
  51 #include <sys/types.h>
  52
  53
  54 /* UDP header as specified by RFC 768, August 1980. */
  55
  56 struct udphdr
  57 {
  58   __extension__ union
  59   {
  60     struct
  61     {
  62       u_int16_t uh_sport;               /* source port */
  63       u_int16_t uh_dport;               /* destination port */
  64       u_int16_t uh_ulen;                /* udp length */
  65       u_int16_t uh_sum;         /* udp checksum */
  66     };
  67     struct
  68     {
  69       u_int16_t source;
  70       u_int16_t dest;
  71       u_int16_t len;
  72       u_int16_t check;
  73     };
  74   };
  75 };
  76
  77 /* UDP socket options */
  78 #define UDP_CORK        1       /* Never send partially complete segments.  */
  79 #define UDP_ENCAP       100     /* Set the socket to accept
  80                                    encapsulated packets.  */
  81
  82 /* UDP encapsulation types */
  83 #define UDP_ENCAP_ESPINUDP_NON_IKE 1    /* draft-ietf-ipsec-nat-t-ike-00/01 */
  84 #define UDP_ENCAP_ESPINUDP      2       /* draft-ietf-ipsec-udp-encaps-06 */
  85 #define UDP_ENCAP_L2TPINUDP     3       /* rfc2661 */
  86
  87 #define SOL_UDP            17      /* sockopt level for UDP */
  88
  89 #endif /* netinet/udp.h */