sif_getn.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 64 行

head	1.1;
access;
symbols;
locks
	dls:1.1; strict;
comment	@ * @;


1.1
date	97.09.21.19.29.17;	author dls;	state Dist;
branches;
next	;


desc
@@


1.1
log
@pre-3e code
@
text
@/* sif_getn.c - sif_getn */

#include <conf.h>
#include <kernel.h>
#include <network.h>

#ifdef	SNMP

#include <snmp.h>
#include <mib.h>

/*------------------------------------------------------------------------
 * sif_getn - perform a getnext on a variable in the Interfaces Table.
 *------------------------------------------------------------------------
 */
sif_getn(bindl, mip, numifaces)
struct snbentry	*bindl;
struct mib_info	*mip;
int		numifaces;
{
	int	oidi, field, iface;

	if (sif_match(bindl, &iface, &field, numifaces) == SYSERR)
		return SERR_NO_SUCH;
	if (++iface > numifaces) {
		iface = 1;
		if (++field > SNUMF_IFTAB)
			return (*mip->mi_next->mi_func)
				(bindl, mip->mi_next, SOP_GETF);
	}
	oidi = SIF_OIDLEN;	/* 2.2.1 */

	bindl->sb_oid.id[oidi++] = (u_short) field;
	bindl->sb_oid.id[oidi++] = (u_short) iface;
	bindl->sb_oid.len = oidi;

	return sif_get(bindl, numifaces);
}
#endif	/* SNMP */
@