usr/src/sys/deprecated/bbnnet/in.h

/*
 * Constants and structures defined by the internet system,
 * Per RFC 790, September 1981.
 */

/*
 * Protocols
 */
#define IPPROTO_IP              0               /* dummy for IP */
#define IPPROTO_ICMP            1               /* control message protocol */
#define IPPROTO_GGP             2               /* gateway^2 (deprecated) */
#define IPPROTO_TCP             6               /* tcp */
#define IPPROTO_EGP             8               /* exterior gateway protocol */
#define IPPROTO_PUP             12              /* pup */
#define IPPROTO_UDP             17              /* user datagram protocol */
#define IPPROTO_HMP             20              /* host monitoring protocol */
#define IPPROTO_IDP             22              /* xns idp */
#define IPPROTO_RDP             27              /* reliabe datagram protocol */

#define IPPROTO_MAX             256


/*
 * historical and inaccurate.  See protocol .h files if you care
 * about reserved ports.
 */
#define IPPORT_RESERVED         1024

/*
 * Link numbers
 */
#define IMPLINK_IP              155
#define IMPLINK_LOWEXPER        156
#define IMPLINK_HIGHEXPER       158

#ifdef when_convince_berk
/*
 * Internet layers for getsockopt()/setsockopt()
 * (gaps left in case we forgot something)
 */

#define SOL_INPROTO             2       /* tcp/udp/hmp/rdp */
#define SOL_INRAW               4       /* ip */
#define SOL_INETHER             6       /* ARP, etc. */
#define SOL_INIFADDR            8       /* interface addrs */
#endif

/*
 * Internet address (a structure for historical reasons)
 */
struct in_addr {
        u_long s_addr;
};

#define INADDR_ANY        ((u_long) 0x00000000)
#define INADDR_BROADCAST  ((u_long) 0xffffffff)         /* must be masked */

/*
 * Socket address, internet style.
 */
struct sockaddr_in {
        short   sin_family;
        u_short sin_port;
        struct  in_addr sin_addr;
        char    sin_zero[8];
};

/*
 * Options for use with [gs]etsockopt at the IP level.
 */
#define IP_OPTIONS      1               /* set/get IP per-packet options */

#if !defined(vax)
/*
 * Macros for number representation conversion.
 */
#define ntohl(x)        (x)
#define ntohs(x)        (x)
#define htonl(x)        (x)
#define htons(x)        (x)
#endif

#ifdef KERNEL
extern  struct domain inetdomain;
extern  struct protosw inetsw[];
struct  in_addr in_makeaddr();
/*
 * Treat a sockaddr as a sockaddr_in, and retrieve the IP address
 * associated with it.
 */
#define satoipa(x) (((struct sockaddr_in *) (x)) ->sin_addr)

#endif