ac5d1bb3ea
interface up when it is running AND the link is not down (that is, it is up or unknown). If the interface is running but the link is down, we return state 'dormant', because we're waiting for an external event. Otherwise the interface is 'down'. Submitted by: csjp Reviewed by: glebius
542 lines
13 KiB
C
542 lines
13 KiB
C
/*
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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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*
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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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* 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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*
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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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*
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* $Begemot: bsnmp/snmp_mibII/mibII_interfaces.c,v 1.16 2005/11/02 12:07:40 brandt_h Exp $
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*
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* Interfaces group.
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*/
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#include "mibII.h"
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#include "mibII_oid.h"
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/*
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* This structure catches all changes to a interface entry
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*/
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struct ifchange {
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struct snmp_dependency dep;
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u_int ifindex;
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uint32_t set;
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int promisc;
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int admin;
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int traps;
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uint32_t rb;
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int rb_flags;
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int rb_traps;
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};
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#define IFC_PROMISC 0x0001
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#define IFC_ADMIN 0x0002
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#define IFC_TRAPS 0x0004
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#define IFRB_FLAGS 0x0001
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#define IFRB_TRAPS 0x0002
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static const struct asn_oid
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oid_ifTable = OIDX_ifTable;
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/*
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* This function handles all changes to the interface table and interface
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* extension table.
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*/
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static int
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ifchange_func(struct snmp_context *ctx __unused, struct snmp_dependency *dep,
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enum snmp_depop op)
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{
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struct ifchange *ifc = (struct ifchange *)dep;
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struct mibif *ifp;
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struct ifreq ifr, ifr1;
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if ((ifp = mib_find_if(ifc->ifindex)) == NULL)
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return (SNMP_ERR_NO_CREATION);
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switch (op) {
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case SNMP_DEPOP_COMMIT:
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strncpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
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if (ioctl(mib_netsock, SIOCGIFFLAGS, &ifr) == -1) {
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syslog(LOG_ERR, "GIFFLAGS(%s): %m", ifp->name);
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return (SNMP_ERR_GENERR);
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}
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if (ifc->set & IFC_PROMISC) {
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ifr.ifr_flags &= ~IFF_PROMISC;
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if (ifc->promisc)
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ifr.ifr_flags |= IFF_PROMISC;
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ifc->rb |= IFRB_FLAGS;
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}
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if (ifc->set & IFC_ADMIN) {
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ifr.ifr_flags &= ~IFF_UP;
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if (ifc->admin)
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ifr.ifr_flags |= IFF_UP;
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ifc->rb |= IFRB_FLAGS;
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}
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if (ifc->rb & IFRB_FLAGS) {
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strncpy(ifr1.ifr_name, ifp->name, sizeof(ifr1.ifr_name));
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if (ioctl(mib_netsock, SIOCGIFFLAGS, &ifr1) == -1) {
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syslog(LOG_ERR, "GIFFLAGS(%s): %m", ifp->name);
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return (SNMP_ERR_GENERR);
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}
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ifc->rb_flags = ifr1.ifr_flags;
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if (ioctl(mib_netsock, SIOCSIFFLAGS, &ifr) == -1) {
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syslog(LOG_ERR, "SIFFLAGS(%s): %m", ifp->name);
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return (SNMP_ERR_GENERR);
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}
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(void)mib_fetch_ifmib(ifp);
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}
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if (ifc->set & IFC_TRAPS) {
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ifc->rb |= IFRB_TRAPS;
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ifc->rb_traps = ifp->trap_enable;
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ifp->trap_enable = ifc->traps;
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}
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return (SNMP_ERR_NOERROR);
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case SNMP_DEPOP_ROLLBACK:
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if (ifc->rb & IFRB_FLAGS) {
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strncpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
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ifr.ifr_flags = ifc->rb_flags;
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if (ioctl(mib_netsock, SIOCSIFFLAGS, &ifr) == -1) {
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syslog(LOG_ERR, "SIFFLAGS(%s): %m", ifp->name);
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return (SNMP_ERR_UNDO_FAILED);
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}
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(void)mib_fetch_ifmib(ifp);
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}
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if (ifc->rb & IFRB_TRAPS)
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ifp->trap_enable = ifc->rb_traps;
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return (SNMP_ERR_NOERROR);
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case SNMP_DEPOP_FINISH:
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return (SNMP_ERR_NOERROR);
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}
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abort();
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}
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/*
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* Return difference to daemon start time in ticks truncated to a
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* 32-bit value. If the timeval is 0 then return 0.
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*/
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static uint32_t
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ticks_get_timeval(struct timeval *tv)
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{
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uint64_t v;
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if (tv->tv_sec != 0 || tv->tv_usec != 0) {
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v = 100ULL * tv->tv_sec + tv->tv_usec / 10000ULL;
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if (v > start_tick)
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return (v - start_tick);
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}
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return (0);
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}
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/*
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* Scalars
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*/
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int
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op_interfaces(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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switch (value->var.subs[sub - 1]) {
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case LEAF_ifNumber:
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value->v.integer = mib_if_number;
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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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* Iftable entry
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*/
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int
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op_ifentry(struct snmp_context *ctx, struct snmp_value *value,
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u_int sub, u_int iidx __unused, enum snmp_op op)
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{
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struct mibif *ifp = NULL;
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int ret;
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struct ifchange *ifc;
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struct asn_oid idx;
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switch (op) {
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case SNMP_OP_GETNEXT:
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if ((ifp = NEXT_OBJECT_INT(&mibif_list, &value->var, sub)) == NULL)
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return (SNMP_ERR_NOSUCHNAME);
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value->var.len = sub + 1;
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value->var.subs[sub] = ifp->index;
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break;
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case SNMP_OP_GET:
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if (value->var.len - sub != 1)
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return (SNMP_ERR_NOSUCHNAME);
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if ((ifp = mib_find_if(value->var.subs[sub])) == NULL)
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return (SNMP_ERR_NOSUCHNAME);
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break;
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case SNMP_OP_SET:
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if (value->var.len - sub != 1)
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return (SNMP_ERR_NO_CREATION);
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if ((ifp = mib_find_if(value->var.subs[sub])) == NULL)
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return (SNMP_ERR_NO_CREATION);
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if (value->var.subs[sub - 1] != LEAF_ifAdminStatus)
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return (SNMP_ERR_NOT_WRITEABLE);
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idx.len = 1;
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idx.subs[0] = ifp->index;
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if (value->v.integer != 1 && value->v.integer != 2)
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return (SNMP_ERR_WRONG_VALUE);
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if ((ifc = (struct ifchange *)snmp_dep_lookup(ctx,
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&oid_ifTable, &idx, sizeof(*ifc), ifchange_func)) == NULL)
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return (SNMP_ERR_RES_UNAVAIL);
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ifc->ifindex = ifp->index;
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if (ifc->set & IFC_ADMIN)
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return (SNMP_ERR_INCONS_VALUE);
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ifc->set |= IFC_ADMIN;
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ifc->admin = (value->v.integer == 1) ? 1 : 0;
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return (SNMP_ERR_NOERROR);
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case SNMP_OP_ROLLBACK:
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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 (ifp->mibtick < this_tick)
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(void)mib_fetch_ifmib(ifp);
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ret = SNMP_ERR_NOERROR;
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switch (value->var.subs[sub - 1]) {
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case LEAF_ifIndex:
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value->v.integer = ifp->index;
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break;
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case LEAF_ifDescr:
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ret = string_get(value, ifp->descr, -1);
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break;
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case LEAF_ifType:
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value->v.integer = ifp->mib.ifmd_data.ifi_type;
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break;
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case LEAF_ifMtu:
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value->v.integer = ifp->mib.ifmd_data.ifi_mtu;
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break;
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case LEAF_ifSpeed:
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value->v.integer = ifp->mib.ifmd_data.ifi_baudrate;
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break;
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case LEAF_ifPhysAddress:
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ret = string_get(value, ifp->physaddr,
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ifp->physaddrlen);
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break;
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case LEAF_ifAdminStatus:
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value->v.integer =
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(ifp->mib.ifmd_flags & IFF_UP) ? 1 : 2;
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break;
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case LEAF_ifOperStatus:
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/*
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* According to RFC 2863 the state should be Up if the
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* interface is ready to transmit packets. We takes this to
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* mean that the interface should be running and should have
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* a carrier. If it is running and has no carrier we interpret
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* this as 'waiting for an external event' (plugging in the
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* cable) and hence return 'dormant'.
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*/
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if (ifp->mib.ifmd_flags & IFF_RUNNING) {
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if (ifp->mib.ifmd_data.ifi_link_state ==
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LINK_STATE_DOWN)
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value->v.integer = 5; /* state dormant */
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else
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value->v.integer = 1; /* state up */
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} else
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value->v.integer = 2; /* state down */
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break;
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case LEAF_ifLastChange:
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value->v.uint32 =
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ticks_get_timeval(&ifp->mib.ifmd_data.ifi_lastchange);
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break;
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case LEAF_ifInOctets:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_ibytes;
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break;
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case LEAF_ifInUcastPkts:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_ipackets -
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ifp->mib.ifmd_data.ifi_imcasts;
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break;
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case LEAF_ifInNUcastPkts:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_imcasts;
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break;
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case LEAF_ifInDiscards:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_iqdrops;
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break;
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case LEAF_ifInErrors:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_ierrors;
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break;
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case LEAF_ifInUnknownProtos:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_noproto;
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break;
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case LEAF_ifOutOctets:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_obytes;
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break;
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case LEAF_ifOutUcastPkts:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_opackets -
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ifp->mib.ifmd_data.ifi_omcasts;
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break;
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case LEAF_ifOutNUcastPkts:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_omcasts;
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break;
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case LEAF_ifOutDiscards:
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value->v.uint32 = ifp->mib.ifmd_snd_drops;
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break;
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case LEAF_ifOutErrors:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_oerrors;
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break;
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case LEAF_ifOutQLen:
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value->v.uint32 = ifp->mib.ifmd_snd_len;
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break;
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case LEAF_ifSpecific:
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value->v.oid = ifp->spec_oid;
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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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* IfXtable entry
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*/
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int
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op_ifxtable(struct snmp_context *ctx, struct snmp_value *value,
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u_int sub, u_int iidx __unused, enum snmp_op op)
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{
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struct mibif *ifp = NULL;
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int ret;
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struct ifchange *ifc;
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struct asn_oid idx;
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switch (op) {
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again:
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if (op != SNMP_OP_GETNEXT)
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return (SNMP_ERR_NOSUCHNAME);
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/* FALLTHROUGH */
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case SNMP_OP_GETNEXT:
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if ((ifp = NEXT_OBJECT_INT(&mibif_list, &value->var, sub)) == NULL)
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return (SNMP_ERR_NOSUCHNAME);
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value->var.len = sub + 1;
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value->var.subs[sub] = ifp->index;
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break;
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case SNMP_OP_GET:
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if (value->var.len - sub != 1)
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return (SNMP_ERR_NOSUCHNAME);
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if ((ifp = mib_find_if(value->var.subs[sub])) == NULL)
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return (SNMP_ERR_NOSUCHNAME);
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break;
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case SNMP_OP_SET:
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if (value->var.len - sub != 1)
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return (SNMP_ERR_NO_CREATION);
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if ((ifp = mib_find_if(value->var.subs[sub])) == NULL)
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return (SNMP_ERR_NO_CREATION);
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idx.len = 1;
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idx.subs[0] = ifp->index;
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if ((ifc = (struct ifchange *)snmp_dep_lookup(ctx,
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&oid_ifTable, &idx, sizeof(*ifc), ifchange_func)) == NULL)
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return (SNMP_ERR_RES_UNAVAIL);
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ifc->ifindex = ifp->index;
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switch (value->var.subs[sub - 1]) {
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case LEAF_ifLinkUpDownTrapEnable:
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if (value->v.integer != 1 && value->v.integer != 2)
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return (SNMP_ERR_WRONG_VALUE);
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if (ifc->set & IFC_TRAPS)
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return (SNMP_ERR_INCONS_VALUE);
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ifc->set |= IFC_TRAPS;
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ifc->traps = (value->v.integer == 1) ? 1 : 0;
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return (SNMP_ERR_NOERROR);
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case LEAF_ifPromiscuousMode:
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if (value->v.integer != 1 && value->v.integer != 2)
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return (SNMP_ERR_WRONG_VALUE);
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if (ifc->set & IFC_PROMISC)
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return (SNMP_ERR_INCONS_VALUE);
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ifc->set |= IFC_PROMISC;
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ifc->promisc = (value->v.integer == 1) ? 1 : 0;
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return (SNMP_ERR_NOERROR);
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}
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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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return (SNMP_ERR_NOERROR);
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}
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if (ifp->mibtick < this_tick)
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(void)mib_fetch_ifmib(ifp);
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ret = SNMP_ERR_NOERROR;
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switch (value->var.subs[sub - 1]) {
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case LEAF_ifName:
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ret = string_get(value, ifp->name, -1);
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break;
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case LEAF_ifInMulticastPkts:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_imcasts;
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break;
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case LEAF_ifInBroadcastPkts:
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value->v.uint32 = 0;
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break;
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case LEAF_ifOutMulticastPkts:
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value->v.uint32 = ifp->mib.ifmd_data.ifi_omcasts;
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break;
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case LEAF_ifOutBroadcastPkts:
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value->v.uint32 = 0;
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break;
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case LEAF_ifHCInOctets:
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if (!(ifp->flags & MIBIF_HIGHSPEED))
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goto again;
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value->v.counter64 = ifp->hc_inoctets;
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break;
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case LEAF_ifHCInUcastPkts:
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if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
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goto again;
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value->v.counter64 = ifp->hc_ipackets - ifp->hc_imcasts;
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break;
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case LEAF_ifHCInMulticastPkts:
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if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
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goto again;
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value->v.counter64 = ifp->hc_imcasts;
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break;
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case LEAF_ifHCInBroadcastPkts:
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if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
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goto again;
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value->v.counter64 = 0;
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break;
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case LEAF_ifHCOutOctets:
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if (!(ifp->flags & MIBIF_HIGHSPEED))
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goto again;
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value->v.counter64 = ifp->hc_outoctets;
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break;
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|
|
case LEAF_ifHCOutUcastPkts:
|
|
if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
|
|
goto again;
|
|
value->v.counter64 = ifp->hc_opackets - ifp->hc_omcasts;
|
|
break;
|
|
|
|
case LEAF_ifHCOutMulticastPkts:
|
|
if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
|
|
goto again;
|
|
value->v.counter64 = ifp->hc_omcasts;
|
|
break;
|
|
|
|
case LEAF_ifHCOutBroadcastPkts:
|
|
if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
|
|
goto again;
|
|
value->v.counter64 = 0;
|
|
break;
|
|
|
|
case LEAF_ifLinkUpDownTrapEnable:
|
|
value->v.integer = ifp->trap_enable ? 1 : 2;
|
|
break;
|
|
|
|
case LEAF_ifHighSpeed:
|
|
value->v.integer =
|
|
(ifp->mib.ifmd_data.ifi_baudrate + 499999) / 1000000;
|
|
break;
|
|
|
|
case LEAF_ifPromiscuousMode:
|
|
value->v.integer =
|
|
(ifp->mib.ifmd_flags & IFF_PROMISC) ? 1 : 2;
|
|
break;
|
|
|
|
case LEAF_ifConnectorPresent:
|
|
value->v.integer = ifp->has_connector ? 1 : 2;
|
|
break;
|
|
|
|
case LEAF_ifAlias:
|
|
ret = string_get(value, "", -1);
|
|
break;
|
|
|
|
case LEAF_ifCounterDiscontinuityTime:
|
|
if (ifp->counter_disc > start_tick)
|
|
value->v.uint32 = ifp->counter_disc - start_tick;
|
|
else
|
|
value->v.uint32 = 0;
|
|
break;
|
|
}
|
|
return (ret);
|
|
}
|