include/uapi/linux/udp.h

   1 /*
   2  * INET         An implementation of the TCP/IP protocol suite for the LINUX
   3  *              operating system.  INET is implemented using the  BSD Socket
   4  *              interface as the means of communication with the user level.
   5  *
   6  *              Definitions for the UDP protocol.
   7  *
   8  * Version:     @(#)udp.h       1.0.2   04/28/93
   9  *
  10  * Author:      Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  11  *
  12  *              This program is free software; you can redistribute it and/or
  13  *              modify it under the terms of the GNU General Public License
  14  *              as published by the Free Software Foundation; either version
  15  *              2 of the License, or (at your option) any later version.
  16  */
  17 #ifndef _UAPI_LINUX_UDP_H
  18 #define _UAPI_LINUX_UDP_H
  19
  20 #include <linux/types.h>
  21
  22 struct udphdr {
  23         __be16  source;
  24         __be16  dest;
  25         __be16  len;
  26         __sum16 check;
  27 };
  28
  29 /* UDP socket options */
  30 #define UDP_CORK        1       /* Never send partially complete segments */
  31 #define UDP_ENCAP       100     /* Set the socket to accept encapsulated packets */
  32 #define UDP_NO_CHECK6_TX 101    /* Disable sending checksum for UDP6X */
  33 #define UDP_NO_CHECK6_RX 102    /* Disable accpeting checksum for UDP6 */
  34
  35 /* UDP encapsulation types */
  36 #define UDP_ENCAP_ESPINUDP_NON_IKE      1 /* draft-ietf-ipsec-nat-t-ike-00/01 */
  37 #define UDP_ENCAP_ESPINUDP      2 /* draft-ietf-ipsec-udp-encaps-06 */
  38 #define UDP_ENCAP_L2TPINUDP     3 /* rfc2661 */
  39
  40
  41 #endif /* _UAPI_LINUX_UDP_H */