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/* $NetBSD: inet.h,v 1.3 1994/10/27 04:21:14 cgd Exp $ */
/*
* source in this file came from
* the Mach ethernet boot written by Leendert van Doorn.
*
* Various UDP/IP definitions (see RFC 768, and 791)
*/
/* generic IP address */
#define IP_ANYADDR (ipaddr_t)0 /* IP any address */
#define IP_BCASTADDR (ipaddr_t)0xffffffff /* IP broadcast address */
/* some well defined protocols/ports */
#define IP_PROTO_UDP 17 /* user datagram protocol */
#define IP_PORT_TFTP 69 /* trivial FTP port */
/* internet address type */
typedef u_long ipaddr_t;
/* internet address type (only used for printing address) */
typedef union {
ipaddr_t a;
struct { u_char a0, a1, a2, a3; } s;
} inetaddr_t;
/*
* Structure of an internet header (without options)
*/
typedef struct {
u_char ip_vhl; /* version and header length */
#define IP_VERSION 4 /* current version number */
u_char ip_tos; /* type of service */
u_short ip_len; /* total length */
u_short ip_id; /* identification */
u_short ip_off; /* fragment offset field */
u_char ip_ttl; /* time to live */
#define IP_FRAGTTL 60 /* time to live for frags */
u_char ip_p; /* protocol */
u_short ip_sum; /* checksum */
ipaddr_t ip_src; /* source address */
ipaddr_t ip_dst; /* destination address */
} iphdr_t;
/*
* Structure of an UDP header
*/
typedef struct {
u_short uh_sport; /* source port */
u_short uh_dport; /* destination port */
u_short uh_len; /* udp length */
u_short uh_sum; /* udp checksum */
} udphdr_t;
/* these are actually defined in arp.c */
extern ipaddr_t ip_myaddr; /* my own IP address */
extern ipaddr_t ip_gateway; /* gateway's IP address */
void IpPrintAddr(ipaddr_t);
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