2003-11-10 08:53:38 +00:00
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/*
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* Copyright (c) 2001-2003
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* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
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* All rights reserved.
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*
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* Author: Harti Brandt <harti@freebsd.org>
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2016-12-27 23:32:54 +00:00
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*
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2004-08-06 13:38:30 +00:00
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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2003-11-10 08:53:38 +00:00
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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2016-12-27 23:32:54 +00:00
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*
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2004-08-06 13:38:30 +00:00
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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2003-11-10 08:53:38 +00:00
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*
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2005-05-23 11:19:11 +00:00
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* $Begemot: bsnmp/snmp_mibII/mibII_ip.c,v 1.11 2005/05/23 09:03:40 brandt_h Exp $
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2003-11-10 08:53:38 +00:00
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*
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* ip group scalars.
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*/
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#include "mibII.h"
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#include "mibII_oid.h"
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/icmp_var.h>
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static struct ipstat ipstat;
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static u_int ip_idrop;
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static struct icmpstat icmpstat;
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static int ip_forwarding;
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static int ip_defttl;
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2022-08-21 14:44:58 +00:00
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static u_int ip_fragttl;
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2005-05-23 11:19:11 +00:00
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static uint64_t ip_tick;
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2003-11-10 08:53:38 +00:00
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2005-05-23 11:19:11 +00:00
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static uint64_t ipstat_tick;
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2003-11-10 08:53:38 +00:00
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static int
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fetch_ipstat(void)
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{
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size_t len;
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len = sizeof(ipstat);
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if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, NULL, 0) == -1) {
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syslog(LOG_ERR, "net.inet.ip.stats: %m");
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return (-1);
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}
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if (len != sizeof(ipstat)) {
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syslog(LOG_ERR, "net.inet.ip.stats: wrong size");
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return (-1);
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}
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len = sizeof(ip_idrop);
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if (sysctlbyname("net.inet.ip.intr_queue_drops", &ip_idrop, &len, NULL, 0) == -1)
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syslog(LOG_WARNING, "net.inet.ip.intr_queue_drops: %m");
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if (len != sizeof(ip_idrop)) {
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syslog(LOG_WARNING, "net.inet.ip.intr_queue_drops: wrong size");
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ip_idrop = 0;
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}
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len = sizeof(icmpstat);
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if (sysctlbyname("net.inet.icmp.stats", &icmpstat, &len, NULL, 0) == -1) {
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syslog(LOG_ERR, "net.inet.icmp.stats: %m");
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return (-1);
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}
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if (len != sizeof(icmpstat)) {
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syslog(LOG_ERR, "net.inet.icmp.stats: wrong size");
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return (-1);
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}
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2022-08-21 14:44:58 +00:00
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len = sizeof(ip_fragttl);
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if (sysctlbyname("net.inet.ip.fragttl", &ip_fragttl, &len,
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NULL, 0) == -1) {
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syslog(LOG_ERR, "net.inet.ip.fragttl: %m");
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return (-1);
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}
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if (len != sizeof(ip_fragttl)) {
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syslog(LOG_ERR, "net.inet.ip.fragttl: wrong size");
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return (-1);
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}
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2003-11-10 08:53:38 +00:00
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ipstat_tick = get_ticks();
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return (0);
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}
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static int
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fetch_ip(void)
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{
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size_t len;
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len = sizeof(ip_forwarding);
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if (sysctlbyname("net.inet.ip.forwarding", &ip_forwarding, &len,
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NULL, 0) == -1) {
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syslog(LOG_ERR, "net.inet.ip.forwarding: %m");
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return (-1);
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}
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if (len != sizeof(ip_forwarding)) {
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syslog(LOG_ERR, "net.inet.ip.forwarding: wrong size");
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return (-1);
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}
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len = sizeof(ip_defttl);
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if (sysctlbyname("net.inet.ip.ttl", &ip_defttl, &len,
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NULL, 0) == -1) {
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syslog(LOG_ERR, "net.inet.ip.ttl: %m");
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return (-1);
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}
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if (len != sizeof(ip_defttl)) {
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syslog(LOG_ERR, "net.inet.ip.ttl: wrong size");
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return (-1);
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}
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ip_tick = get_ticks();
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return (0);
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}
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static int
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ip_forward(int forw, int *old)
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{
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size_t olen;
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olen = sizeof(*old);
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if (sysctlbyname("net.inet.ip.forwarding", old, old ? &olen : NULL,
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&forw, sizeof(forw)) == -1) {
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syslog(LOG_ERR, "set net.inet.ip.forwarding: %m");
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return (-1);
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}
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ip_forwarding = forw;
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return (0);
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}
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static int
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ip_setttl(int ttl, int *old)
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{
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size_t olen;
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olen = sizeof(*old);
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if (sysctlbyname("net.inet.ip.ttl", old, old ? &olen : NULL,
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&ttl, sizeof(ttl)) == -1) {
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syslog(LOG_ERR, "set net.inet.ip.ttl: %m");
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return (-1);
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}
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ip_defttl = ttl;
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return (0);
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}
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/*
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* READ/WRITE ip group.
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*/
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int
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op_ip(struct snmp_context *ctx, struct snmp_value *value,
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u_int sub, u_int idx __unused, enum snmp_op op)
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{
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2015-08-07 06:15:01 +00:00
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int old = 0;
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2003-11-10 08:53:38 +00:00
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switch (op) {
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case SNMP_OP_GETNEXT:
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abort();
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case SNMP_OP_GET:
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break;
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case SNMP_OP_SET:
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if (ip_tick < this_tick)
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if (fetch_ip() == -1)
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return (SNMP_ERR_GENERR);
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switch (value->var.subs[sub - 1]) {
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case LEAF_ipForwarding:
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ctx->scratch->int1 = ip_forwarding ? 1 : 2;
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ctx->scratch->int2 = value->v.integer;
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if (value->v.integer == 1) {
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if (!ip_forwarding && ip_forward(1, &old))
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return (SNMP_ERR_GENERR);
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ctx->scratch->int1 = old ? 1 : 2;
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} else if (value->v.integer == 2) {
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if (ip_forwarding && ip_forward(0, &old))
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return (SNMP_ERR_GENERR);
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ctx->scratch->int1 = old;
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} else
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return (SNMP_ERR_WRONG_VALUE);
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break;
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case LEAF_ipDefaultTTL:
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ctx->scratch->int1 = ip_defttl;
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ctx->scratch->int2 = value->v.integer;
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if (value->v.integer < 1 || value->v.integer > 255)
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return (SNMP_ERR_WRONG_VALUE);
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if (ip_defttl != value->v.integer &&
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ip_setttl(value->v.integer, &old))
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return (SNMP_ERR_GENERR);
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ctx->scratch->int1 = old;
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break;
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}
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return (SNMP_ERR_NOERROR);
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case SNMP_OP_ROLLBACK:
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switch (value->var.subs[sub - 1]) {
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case LEAF_ipForwarding:
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if (ctx->scratch->int1 == 1) {
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if (ctx->scratch->int2 == 2)
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(void)ip_forward(1, NULL);
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} else {
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if (ctx->scratch->int2 == 1)
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(void)ip_forward(0, NULL);
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}
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break;
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case LEAF_ipDefaultTTL:
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if (ctx->scratch->int1 != ctx->scratch->int2)
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(void)ip_setttl(ctx->scratch->int1, NULL);
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break;
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}
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return (SNMP_ERR_NOERROR);
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case SNMP_OP_COMMIT:
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return (SNMP_ERR_NOERROR);
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}
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if (ip_tick < this_tick)
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if (fetch_ip() == -1)
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return (SNMP_ERR_GENERR);
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switch (value->var.subs[sub - 1]) {
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case LEAF_ipForwarding:
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value->v.integer = ip_forwarding ? 1 : 2;
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break;
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case LEAF_ipDefaultTTL:
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value->v.integer = ip_defttl;
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break;
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}
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return (SNMP_ERR_NOERROR);
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}
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/*
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* READ-ONLY statistics ip group.
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*/
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int
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op_ipstat(struct snmp_context *ctx __unused, struct snmp_value *value,
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u_int sub, u_int idx __unused, enum snmp_op op)
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{
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switch (op) {
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case SNMP_OP_GETNEXT:
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abort();
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case SNMP_OP_GET:
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break;
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case SNMP_OP_SET:
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return (SNMP_ERR_NOT_WRITEABLE);
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case SNMP_OP_ROLLBACK:
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case SNMP_OP_COMMIT:
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abort();
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}
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if (ipstat_tick < this_tick)
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fetch_ipstat();
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switch (value->var.subs[sub - 1]) {
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case LEAF_ipInReceives:
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value->v.uint32 = ipstat.ips_total;
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break;
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case LEAF_ipInHdrErrors:
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value->v.uint32 = ipstat.ips_badsum + ipstat.ips_tooshort
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+ ipstat.ips_toosmall + ipstat.ips_badhlen
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+ ipstat.ips_badlen + ipstat.ips_badvers +
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+ ipstat.ips_toolong;
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break;
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case LEAF_ipInAddrErrors:
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value->v.uint32 = ipstat.ips_cantforward;
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break;
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case LEAF_ipForwDatagrams:
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value->v.uint32 = ipstat.ips_forward;
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break;
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case LEAF_ipInUnknownProtos:
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value->v.uint32 = ipstat.ips_noproto;
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break;
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case LEAF_ipInDiscards:
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value->v.uint32 = ip_idrop;
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break;
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case LEAF_ipInDelivers:
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value->v.uint32 = ipstat.ips_delivered;
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break;
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case LEAF_ipOutRequests:
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value->v.uint32 = ipstat.ips_localout;
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break;
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case LEAF_ipOutDiscards:
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value->v.uint32 = ipstat.ips_odropped;
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break;
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case LEAF_ipOutNoRoutes:
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value->v.uint32 = ipstat.ips_noroute;
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break;
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case LEAF_ipReasmTimeout:
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2022-08-21 14:44:58 +00:00
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value->v.integer = ip_fragttl;
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2003-11-10 08:53:38 +00:00
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break;
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case LEAF_ipReasmReqds:
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value->v.uint32 = ipstat.ips_fragments;
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break;
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case LEAF_ipReasmOKs:
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value->v.uint32 = ipstat.ips_reassembled;
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break;
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case LEAF_ipReasmFails:
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value->v.uint32 = ipstat.ips_fragdropped
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+ ipstat.ips_fragtimeout;
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break;
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case LEAF_ipFragOKs:
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value->v.uint32 = ipstat.ips_fragmented;
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break;
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case LEAF_ipFragFails:
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value->v.uint32 = ipstat.ips_cantfrag;
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break;
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case LEAF_ipFragCreates:
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value->v.uint32 = ipstat.ips_ofragments;
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break;
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}
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return (SNMP_ERR_NOERROR);
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}
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/*
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* READ-ONLY statistics icmp group.
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*/
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int
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op_icmpstat(struct snmp_context *ctx __unused, struct snmp_value *value,
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u_int sub, u_int idx __unused, enum snmp_op op)
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{
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u_int i;
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switch (op) {
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|
|
|
case SNMP_OP_GETNEXT:
|
|
|
|
abort();
|
|
|
|
|
|
|
|
case SNMP_OP_GET:
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SNMP_OP_SET:
|
|
|
|
return (SNMP_ERR_NOT_WRITEABLE);
|
|
|
|
|
|
|
|
case SNMP_OP_ROLLBACK:
|
|
|
|
case SNMP_OP_COMMIT:
|
|
|
|
abort();
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ipstat_tick < this_tick)
|
|
|
|
fetch_ipstat();
|
|
|
|
|
|
|
|
switch (value->var.subs[sub - 1]) {
|
|
|
|
|
|
|
|
case LEAF_icmpInMsgs:
|
|
|
|
value->v.integer = 0;
|
|
|
|
for (i = 0; i <= ICMP_MAXTYPE; i++)
|
|
|
|
value->v.integer += icmpstat.icps_inhist[i];
|
|
|
|
value->v.integer += icmpstat.icps_tooshort +
|
|
|
|
icmpstat.icps_checksum;
|
|
|
|
/* missing: bad type and packets on faith */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInErrors:
|
|
|
|
value->v.integer = icmpstat.icps_tooshort +
|
|
|
|
icmpstat.icps_checksum +
|
|
|
|
icmpstat.icps_badlen +
|
|
|
|
icmpstat.icps_badcode +
|
|
|
|
icmpstat.icps_bmcastecho +
|
|
|
|
icmpstat.icps_bmcasttstamp;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInDestUnreachs:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_UNREACH];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInTimeExcds:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_TIMXCEED];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInParmProbs:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_PARAMPROB];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInSrcQuenchs:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_SOURCEQUENCH];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInRedirects:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_REDIRECT];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInEchos:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_ECHO];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInEchoReps:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_ECHOREPLY];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInTimestamps:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_TSTAMP];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInTimestampReps:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_TSTAMPREPLY];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInAddrMasks:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_MASKREQ];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpInAddrMaskReps:
|
|
|
|
value->v.integer = icmpstat.icps_inhist[ICMP_MASKREPLY];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutMsgs:
|
|
|
|
value->v.integer = 0;
|
|
|
|
for (i = 0; i <= ICMP_MAXTYPE; i++)
|
|
|
|
value->v.integer += icmpstat.icps_outhist[i];
|
|
|
|
value->v.integer += icmpstat.icps_badaddr +
|
|
|
|
icmpstat.icps_noroute;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutErrors:
|
|
|
|
value->v.integer = icmpstat.icps_badaddr +
|
|
|
|
icmpstat.icps_noroute;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutDestUnreachs:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_UNREACH];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutTimeExcds:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_TIMXCEED];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutParmProbs:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_PARAMPROB];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutSrcQuenchs:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_SOURCEQUENCH];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutRedirects:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_REDIRECT];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutEchos:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_ECHO];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutEchoReps:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_ECHOREPLY];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutTimestamps:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_TSTAMP];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutTimestampReps:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_TSTAMPREPLY];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutAddrMasks:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_MASKREQ];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEAF_icmpOutAddrMaskReps:
|
|
|
|
value->v.integer = icmpstat.icps_outhist[ICMP_MASKREPLY];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return (SNMP_ERR_NOERROR);
|
|
|
|
}
|