if.h

来自「Unix/Linux 网络时间协议版本3 Network Time Proto」· C头文件 代码 · 共 99 行

/* this is a hacked version of if.h from unix to contain the stuff we need only to build named (bind) with
   the minimal amount of changes... by l. kahn */

   /*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef	_NET_IF_H
#define	_NET_IF_H


/* #pragma ident	"@(#)if.h	1.3	93/06/30 SMI"
/* if.h 1.26 90/05/29 SMI; from UCB 7.1 6/4/86		*/

#ifdef	__cplusplus
extern "C" {
#endif

/*
 * Structures defining a network interface, providing a packet
 * transport mechanism (ala level 0 of the PUP protocols).
 *
 * Each interface accepts output datagrams of a specified maximum
 * length, and provides higher level routines with input datagrams
 * received from its medium.
 *
 * Output occurs when the routine if_output is called, with three parameters:
 *	(*ifp->if_output)(ifp, m, dst)
 * Here m is the mbuf chain to be sent and dst is the destination address.
 * The output routine encapsulates the supplied datagram if necessary,
 * and then transmits it on its medium.
 *
 * On input, each interface unwraps the data received by it, and either
 * places it on the input queue of a internetwork datagram routine
 * and posts the associated software interrupt, or passes the datagram to a raw
 * packet input routine.
 *
 * Routines exist for locating interfaces by their addresses
 * or for locating a interface on a certain network, as well as more general
 * routing and gateway routines maintaining information used to locate
 * interfaces.  These routines live in the files if.c and route.c
 */

/*
 * Structure defining a queue for a network interface.
 *
 * (Would like to call this struct ``if'', but C isn't PL/1.)
 */
/*
 * Interface request structure used for socket
 * ioctl's.  All interface ioctl's must have parameter
 * definitions which begin with ifr_name.  The
 * remainder may be interface specific.
 */
#ifdef FD_SETSIZE
#undef FD_SETSIZE
#endif
#define FD_SETSIZE 512
#include <winsock.h>
typedef char *caddr_t;

int get_winnt_interfaces();

struct	ifreq {
#define	IFNAMSIZ	16
	char	ifr_name[IFNAMSIZ];		/* if name, e.g. "en0" */
	struct	sockaddr ifru_addr;
    char    nt_mask[IFNAMSIZ];      /* new field to store mask returned from nt lookup l. kahn */

#define	ifr_addr	ifru_addr	/* address */
#define	ifr_mask	nt_mask	    /* nt mask in character form */

};

/*
 * Structure used in SIOCGIFCONF request.
 * Used to retrieve interface configuration
 * for machine (useful for programs which
 * must know all networks accessible).
 */
struct	ifconf {
	int	ifc_len;		/* size of associated buffer */
	union {
		caddr_t	ifcu_buf;
		struct	ifreq *ifcu_req;
	} ifc_ifcu;
#define	ifc_buf	ifc_ifcu.ifcu_buf	/* buffer address */
#define	ifc_req	ifc_ifcu.ifcu_req	/* array of structures returned */
};

#ifdef	__cplusplus
}
#endif

#endif	/* _NET_IF_H */