sys/netinet/udp.h

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  1. /*	$NetBSD: udp.h,v 1.15 2012/01/07 20:20:12 christos Exp $	*/
    2. 

  2. 

  3. /*
    4. 

  4.  * Copyright (c) 1982, 1986, 1993
    5. 

  5.  *	The Regents of the University of California.  All rights reserved.
    6. 

  6.  *
    7. 

  7.  * Redistribution and use in source and binary forms, with or without
    8. 

  8.  * modification, are permitted provided that the following conditions
    9. 

  9.  * are met:
    10. 

  10.  * 1. Redistributions of source code must retain the above copyright
    11. 

  11.  *    notice, this list of conditions and the following disclaimer.
    12. 

  12.  * 2. Redistributions in binary form must reproduce the above copyright
    13. 

  13.  *    notice, this list of conditions and the following disclaimer in the
    14. 

  14.  *    documentation and/or other materials provided with the distribution.
    15. 

  15.  * 3. Neither the name of the University nor the names of its contributors
    16. 

  16.  *    may be used to endorse or promote products derived from this software
    17. 

  17.  *    without specific prior written permission.
    18. 

  18.  *
    19. 

  19.  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
    20. 

  20.  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    21. 

  21.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    22. 

  22.  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
    23. 

  23.  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    24. 

  24.  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    25. 

  25.  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    26. 

  26.  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    27. 

  27.  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    28. 

  28.  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    29. 

  29.  * SUCH DAMAGE.
    30. 

  30.  *
    31. 

  31.  *	@(#)udp.h	8.1 (Berkeley) 6/10/93
    32. 

  32.  */
    33. 

  33. 

  34. #ifndef _NETINET_UDP_H_
    35. 

  35. #define _NETINET_UDP_H_
    36. 

  36. 

  37. #include <sys/types.h>
    38. 

  38. /*
    39. 

  39.  * Udp protocol header.
    40. 

  40.  * Per RFC 768, September, 1981.
    41. 

  41.  */
    42. 

  42. struct udphdr {
    43. 

  43. 	uint16_t uh_sport;		/* source port */
    44. 

  44. 	uint16_t uh_dport;		/* destination port */
    45. 

  45. 	uint16_t uh_ulen;		/* udp length */
    46. 

  46. 	uint16_t uh_sum;		/* udp checksum */
    47. 

  47. } __packed;
    48. 

  48. 

  49. /* socket options for UDP */
    50. 

  50. #define	UDP_ENCAP	100
    51. 

  51. #define	UDP_RFC6056ALGO	200
    52. 

  52. 

  53. /* Encapsulation types */
    54. 

  54. #define UDP_ENCAP_ESPINUDP_NON_IKE 	1 /* draft-ietf-ipsec-nat-t-ike-00/01 */
    55. 

  55. #define UDP_ENCAP_ESPINUDP		2 /* draft-ietf-ipsec-udp-encaps-06 */
    56. 

  56. 

  57. /* Default encapsulation port */
    58. 

  58. #define UDP_ENCAP_ESPINUDP_PORT		500
    59. 

  59. 

  60. /* Maximum UDP fragment size for ESP over UDP */
    61. 

  61. #define UDP_ENCAP_ESPINUDP_MAXFRAGLEN	552
    62. 

  62. 

  63. #endif /* !_NETINET_UDP_H_ */
    64.