srt_match.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 65 行

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date	97.09.21.19.29.17;	author dls;	state Dist;
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@/* srt_match.c - srt_match */

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

#ifdef	SNMP

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

/*------------------------------------------------------------------------
 * srt_match - check if a variable exists in the current Routing Table
 *------------------------------------------------------------------------
 */
int srt_match(bindl, rtp, rtl, field)
struct snbentry	*bindl;
struct route	**rtp;
int		*rtl;
int		*field;
{
	int 	oidi, i;
	Bool	found;

	oidi = SRT_OIDLEN;
	if ((*field = bindl->sb_oid.id[oidi++]) > SNUMF_RTTAB)
		return SYSERR;
	/* oidi points to IP address to match in the routing table. */
	for (found = FALSE, i = 0; !found && i < RT_TSIZE; i++)  
		for (*rtp = rttable[i]; *rtp; *rtp = (*rtp)->rt_next)
			if (found = soipequ(&bindl->sb_oid.id[oidi],
					(*rtp)->rt_net, IP_ALEN))
				break;
	if (!found ||				/* not there		*/
	    oidi + IP_ALEN != bindl->sb_oid.len) /* not end of object id*/
		return SYSERR;
	*rtl = i - 1;
	return OK;
}
#endif	/* SNMP */
@