/**
* add new entry
*/
static void
_add_new_interface(netsnmp_interface_entry *ifentry,
netsnmp_container *container)
{
ifTable_rowreq_ctx *rowreq_ctx;
DEBUGMSGTL(("ifTable:access", "creating new entry\n"));
/*
* allocate an row context and set the index(es), then add it to
* the container and set ifTableLastChanged.
*/
rowreq_ctx = ifTable_allocate_rowreq_ctx(ifentry);
if ((NULL != rowreq_ctx) &&
(MFD_SUCCESS == ifTable_indexes_set(rowreq_ctx, ifentry->index))) {
CONTAINER_INSERT(container, rowreq_ctx);
/*
* fix this when we hit an arch that reports its own last change
*/
netsnmp_assert(0 == (ifentry->ns_flags &
NETSNMP_INTERFACE_FLAGS_HAS_LASTCHANGE));
if (0 == _first_load) {
rowreq_ctx->data.ifLastChange = netsnmp_get_agent_uptime();
ifTable_lastChange_set(rowreq_ctx->data.ifLastChange);
}
#ifdef USING_IP_MIB_IPV4INTERFACETABLE_IPV4INTERFACETABLE_MODULE
/*
* give ipv4If table a crack at the entry
*/
ipv4InterfaceTable_check_entry_for_updates(rowreq_ctx, ifentry);
#endif
#ifdef USING_IP_MIB_IPV6INTERFACETABLE_IPV6INTERFACETABLE_MODULE
/*
* give ipv6If table a crack at the entry
*/
ipv6InterfaceTable_check_entry_for_updates(rowreq_ctx, ifentry);
#endif
} else {
if (rowreq_ctx) {
snmp_log(LOG_ERR, "error setting index while loading "
"ifTable cache.\n");
ifTable_release_rowreq_ctx(rowreq_ctx);
} else {
snmp_log(LOG_ERR, "memory allocation failed while loading "
"ifTable cache.\n");
netsnmp_access_interface_entry_free(ifentry);
}
}
}
/*
* @retval 0 success
* @retval -1 no container specified
* @retval -2 could not create entry (probably malloc)
*/
int netsnmp_arch_interface_container_load (netsnmp_container * container, u_int l_flags)
{
netsnmp_interface_entry *entry = NULL;
mib2_ifEntry_t ife;
int rc;
req_e req = GET_FIRST;
int error = 0;
DEBUGMSGTL (("access:interface:container:arch", "load (flags %u)\n", l_flags));
if (container == NULL)
{
snmp_log (LOG_ERR, "no container specified/found for interface\n");
return -1;
}
while ((rc = getMibstat (MIB_INTERFACES, &ife, sizeof (ife), req, &Get_everything, NULL)) == 0)
{
req = GET_NEXT;
DEBUGMSGTL (("access:interface:container:arch", "processing '%s'\n", ife.ifDescr.o_bytes));
entry = netsnmp_access_interface_entry_create (ife.ifDescr.o_bytes, ife.ifIndex);
if (entry == NULL)
{
error = 1;
break;
}
entry->ns_flags = 0;
if (l_flags & NETSNMP_ACCESS_INTERFACE_LOAD_IP4_ONLY && _set_ip_flags_v4 (entry, &ife) == 0)
{
netsnmp_access_interface_entry_free (entry);
continue;
}
else if (l_flags & NETSNMP_ACCESS_INTERFACE_LOAD_IP6_ONLY && _set_ip_flags_v6 (entry, &ife) == 0)
{
netsnmp_access_interface_entry_free (entry);
continue;
}
else
{
(void) _set_ip_flags_v4 (entry, &ife);
(void) _set_ip_flags_v6 (entry, &ife);
}
/*
* collect the information needed by IF-MIB
*/
entry->paddr = (char *) malloc (ife.ifPhysAddress.o_length);
if (entry->paddr == NULL)
{
netsnmp_access_interface_entry_free (entry);
error = 1;
break;
}
entry->paddr_len = ife.ifPhysAddress.o_length;
(void) memcpy (entry->paddr, ife.ifPhysAddress.o_bytes, ife.ifPhysAddress.o_length);
entry->type = ife.ifType;
entry->mtu = ife.ifMtu;
entry->speed = ife.ifSpeed;
entry->speed_high = entry->speed / 1000000;
entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_HIGH_SPEED;
entry->oper_status = ife.ifOperStatus;
entry->admin_status = ife.ifAdminStatus;
if (ife.flags & IFF_PROMISC)
entry->promiscuous = 1;
entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_ACTIVE;
/*
* Interface Stats.
*/
if (!(l_flags & NETSNMP_ACCESS_INTERFACE_LOAD_NO_STATS))
{
entry->ns_flags |=
NETSNMP_INTERFACE_FLAGS_HAS_BYTES |
NETSNMP_INTERFACE_FLAGS_HAS_DROPS | NETSNMP_INTERFACE_FLAGS_HAS_MCAST_PKTS;
if (ife.ifHCInOctets > 0 || ife.ifHCOutOctets > 0)
{
/*
* We make the assumption that if we have
* a 64-bit Octet counter, then the other
* counters are 64-bit as well.
*/
DEBUGMSGTL (("access:interface:container:arch",
"interface '%s' have 64-bit stat counters\n", entry->name));
entry->ns_flags |= NETSNMP_INTERFACE_FLAGS_HAS_HIGH_BYTES | NETSNMP_INTERFACE_FLAGS_HAS_HIGH_PACKETS;
/* in stats */
entry->stats.ibytes.low = ife.ifHCInOctets & 0xffffffff;
entry->stats.ibytes.high = ife.ifHCInOctets >> 32;
entry->stats.iucast.low = ife.ifHCInUcastPkts & 0xffffffff;
entry->stats.iucast.high = ife.ifHCInUcastPkts >> 32;
entry->stats.imcast.low = ife.ifHCInMulticastPkts & 0xffffffff;
entry->stats.imcast.high = ife.ifHCInMulticastPkts >> 32;
entry->stats.ibcast.low = ife.ifHCInBroadcastPkts & 0xffffffff;
entry->stats.ibcast.high = ife.ifHCInBroadcastPkts >> 32;
/* out stats */
entry->stats.obytes.low = ife.ifHCOutOctets & 0xffffffff;
entry->stats.obytes.high = ife.ifHCOutOctets >> 32;
entry->stats.oucast.low = ife.ifHCOutUcastPkts & 0xffffffff;
entry->stats.oucast.high = ife.ifHCOutUcastPkts >> 32;
entry->stats.omcast.low = ife.ifHCOutMulticastPkts & 0xffffffff;
entry->stats.omcast.high = ife.ifHCOutMulticastPkts >> 32;
entry->stats.obcast.low = ife.ifHCOutBroadcastPkts & 0xffffffff;
entry->stats.obcast.high = ife.ifHCOutBroadcastPkts >> 32;
}
else
{
/**
* check entry for update
*
*/
static void
_check_interface_entry_for_updates(ifTable_rowreq_ctx * rowreq_ctx,
netsnmp_container *ifcontainer)
{
char oper_changed = 0;
/*
* check for matching entry. We can do this directly, since
* both containers use the same index.
*/
netsnmp_interface_entry *ifentry =
CONTAINER_FIND(ifcontainer, rowreq_ctx);
#ifdef USING_IP_MIB_IPV4INTERFACETABLE_IPV4INTERFACETABLE_MODULE
/*
* give ipv4If table a crack at the entry
*/
ipv4InterfaceTable_check_entry_for_updates(rowreq_ctx, ifentry);
#endif
#ifdef USING_IP_MIB_IPV6INTERFACETABLE_IPV6INTERFACETABLE_MODULE
/*
* give ipv6If table a crack at the entry
*/
ipv6InterfaceTable_check_entry_for_updates(rowreq_ctx, ifentry);
#endif
if (NULL == ifentry) {
/*
* if this is the first time we detected that this interface is
* missing, set admin/oper status down, and set last change.
*
* yyy-rks: when, if ever, would we consider an entry
* deleted (and thus need to update ifTableLastChanged)?
*/
if (!rowreq_ctx->known_missing) {
DEBUGMSGTL(("ifTable:access", "updating missing entry\n"));
rowreq_ctx->known_missing = 1;
rowreq_ctx->data.ifAdminStatus = IFADMINSTATUS_DOWN;
if ((!(rowreq_ctx->data.ifentry->ns_flags & NETSNMP_INTERFACE_FLAGS_HAS_LASTCHANGE))
&& (rowreq_ctx->data.ifOperStatus != IFOPERSTATUS_DOWN))
oper_changed = 1;
rowreq_ctx->data.ifOperStatus = IFOPERSTATUS_DOWN;
}
} else {
DEBUGMSGTL(("ifTable:access", "updating existing entry\n"));
#ifdef USING_IF_MIB_IFXTABLE_IFXTABLE_MODULE
{
int rc = strcmp(rowreq_ctx->data.ifName,
ifentry->name);
netsnmp_assert(rc == 0);
}
#endif
/*
* if the interface was missing, but came back, clear the
* missing flag and set the discontinuity time. (if an os keeps
* persistent counters, tough cookies. We'll cross that
* bridge if we come to it).
*/
if (rowreq_ctx->known_missing) {
rowreq_ctx->known_missing = 0;
#ifdef USING_IF_MIB_IFXTABLE_IFXTABLE_MODULE
rowreq_ctx->data.ifCounterDiscontinuityTime =
netsnmp_get_agent_uptime();
#endif
}
/*
* Check for changes, then update
*/
if ((!(ifentry->ns_flags & NETSNMP_INTERFACE_FLAGS_HAS_LASTCHANGE))
&& (rowreq_ctx->data.ifOperStatus != ifentry->oper_status))
oper_changed = 1;
netsnmp_access_interface_entry_copy(rowreq_ctx->data.ifentry,
ifentry);
/*
* remove entry from temporary ifcontainer
*/
CONTAINER_REMOVE(ifcontainer, ifentry);
netsnmp_access_interface_entry_free(ifentry);
}
/*
* if ifOperStatus changed, update ifLastChange
*/
if (oper_changed)
rowreq_ctx->data.ifLastChange = netsnmp_get_agent_uptime();
}
static void
_access_interface_entry_release(netsnmp_interface_entry * entry, void *context)
{
netsnmp_access_interface_entry_free(entry);
}
