/*
 ******************************************************************************
 *                     HEADER FILE
 *
 *     Document no: @(#) $Name: VXWORKS_ITER40_2019102207 $ $RCSfile: ip.h,v $ $Revision: 1.2 $
 *     $Source: /home/interpeak/CVSRoot/ipxinc/include/netinet/ip.h,v $
 *     $Author: lob $ $Date: 2004-08-24 11:42:34 $
 *     $State: Exp $ $Locker:  $
 *
 *     INTERPEAK_COPYRIGHT_STRING
 *     Design and implementation by Lennart Bang <lob@interpeak.se>
 ******************************************************************************
 */
#ifndef IP_NETINET_IP_H
#define IP_NETINET_IP_H

/*
 ****************************************************************************
 * 1                    DESCRIPTION
 ****************************************************************************
 */

/*
 ****************************************************************************
 * 2                    CONFIGURATION
 ****************************************************************************
 */

#include "ipcom_config.h"


/*
 ****************************************************************************
 * 3                    INCLUDE FILES
 ****************************************************************************
 */

#include "sys/types.h"
#include "netinet/in.h"

#ifdef __cplusplus
extern "C" {
#endif


/*
 ****************************************************************************
 * 4                    DEFINES
 ****************************************************************************
 */

/*
 *===========================================================================
 *                         IP options
 *===========================================================================
 */

#define IPOPT_COPY              0x80
#define IPOPT_CLASS_MASK        0x60
#define IPOPT_NUMBER_MASK       0x1f

#define IPOPT_COPIED(o)         ((o) & IPOPT_COPY)
#define IPOPT_CLASS(o)          ((o) & IPOPT_CLASS_MASK)
#define IPOPT_NUMBER(o)         ((o) & IPOPT_NUMBER_MASK)

#define IPOPT_CONTROL           0x00
#define IPOPT_RESERVED1         0x20
#define IPOPT_DEBMEAS           0x40
#define IPOPT_MEASUREMENT       IPOPT_DEBMEAS
#define IPOPT_RESERVED2         0x60

#define IPOPT_EOL               0               /* end of option list */
#define IPOPT_END               IPOPT_EOL
#define IPOPT_NOP               1               /* no operation */
#define IPOPT_NOOP              IPOPT_NOP

#define IPOPT_RR                7               /* record packet route */
#define IPOPT_TS                68              /* timestamp */
#define IPOPT_TIMESTAMP         IPOPT_TS
#define IPOPT_SECURITY          130             /* provide s,c,h,tcc */
#define IPOPT_SEC               IPOPT_SECURITY
#define IPOPT_LSRR              131             /* loose source route */
#define IPOPT_SATID             136             /* satnet id */
#define IPOPT_SID               IPOPT_SATID
#define IPOPT_SSRR              137             /* strict source route */
#define IPOPT_RA                148             /* router alert */


/*
 *===========================================================================
 *                         misc
 *===========================================================================
 */

#define MAXTTL      255
#define IPDEFTTL     64
#define IPFRAGTTL    60
#define IPTTLDEC      1

#define IP_MSS      576


#define IPVERSION       4
#define IP_MAXPACKET    65535


/*
 ****************************************************************************
 * 5                    TYPES
 ****************************************************************************
 */

/*
 * Structure of an internet header, naked of options.
 */
struct ip
{
#ifdef IP_LITTLE_ENDIAN
    unsigned int   ip_hl:4;             /* header length */
    unsigned int   ip_v:4;              /* version */
#elif defined(IP_BIG_ENDIAN)
    unsigned int   ip_v:4;              /* version */
    unsigned int   ip_hl:4;             /* header length */
#else
#error ENDIAN_NOT_DEFINED
#endif
    u_int8_t       ip_tos;              /* type of service */
    unsigned short ip_len;              /* total length */
    unsigned short ip_id;               /* identification */
    unsigned short ip_off;              /* fragment offset field */
    u_int8_t       ip_ttl;              /* time to live */
    u_int8_t       ip_p;                /* protocol */
    unsigned short ip_sum;              /* checksum */
    struct in_addr ip_src, ip_dst;      /* source and dest address */
};

#define IP_RF      0x8000               /* reserved fragment flag */
#define IP_DF      0x4000               /* dont fragment flag */
#define IP_MF      0x2000               /* more fragments flag */
#define IP_OFFMASK 0x1fff               /* mask for fragmenting bits */


/*
 ****************************************************************************
 * 6                    FUNCTIONS
 ****************************************************************************
 */


#ifdef __cplusplus
}
#endif

#endif

/*
 ****************************************************************************
 *                      END OF FILE
 ****************************************************************************
 */