2
* Interface MIB architecture support
4
* $Id: interface_common.c,v 1.20.2.2 2005/02/09 21:02:14 nba Exp $
6
#include <net-snmp/net-snmp-config.h>
7
#include <net-snmp/net-snmp-includes.h>
8
#include "mibII/mibII_common.h"
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#include "if-mib/ifTable/ifTable_constants.h"
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#include <net-snmp/agent/net-snmp-agent-includes.h>
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#include <net-snmp/library/snmp_enum.h>
13
#include "interface.h"
15
/**---------------------------------------------------------------------*/
19
static netsnmp_conf_if_list *conf_list = NULL;
20
static int need_wrap_check = -1;
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static int _access_interface_init = 0;
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* local static prototypes
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static int _access_interface_entry_compare_name(const void *lhs,
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static void _access_interface_entry_release(netsnmp_interface_entry * entry,
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static void _access_interface_entry_save_name(const char *name, oid index);
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static void _parse_interface_config(const char *token, char *cptr);
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static void _free_interface_config(void);
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/**---------------------------------------------------------------------*/
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* external per-architecture functions prototypes
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* These shouldn't be called by the general public, so they aren't in
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#ifndef NETSNMP_ACCESS_INTERFACE_NOARCH
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extern void netsnmp_arch_interface_init(void);
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netsnmp_arch_interface_container_load(netsnmp_container* container,
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netsnmp_arch_set_admin_status(netsnmp_interface_entry * entry,
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extern int netsnmp_arch_interface_index_find(const char*name);
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/**---------------------------------------------------------------------*/
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init_interface_common(void)
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snmpd_register_config_handler("interface", _parse_interface_config,
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_free_interface_config,
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netsnmp_access_interface_init(void)
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netsnmp_assert(0 == _access_interface_init); /* who is calling twice? */
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if (1 == _access_interface_init)
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_access_interface_init = 1;
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#ifndef NETSNMP_ACCESS_INTERFACE_NOARCH
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netsnmp_container * ifcontainer;
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netsnmp_arch_interface_init();
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* load once to set up ifIndexes
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ifcontainer = netsnmp_access_interface_container_load(NULL, 0);
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if(NULL != ifcontainer)
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netsnmp_access_interface_container_free(ifcontainer, 0);
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/**---------------------------------------------------------------------*/
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* initialize interface container
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netsnmp_access_interface_container_init(u_int flags)
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netsnmp_container *container1;
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DEBUGMSGTL(("access:interface:container", "init\n"));
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* create the containers. one indexed by ifIndex, the other
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container1 = netsnmp_container_find("access_interface:table_container");
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if (NULL == container1)
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if (flags & NETSNMP_ACCESS_INTERFACE_INIT_ADDL_IDX_BY_NAME) {
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netsnmp_container *container2 =
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netsnmp_container_find("access_interface_by_name:access_interface:table_container");
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if (NULL == container2)
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container2->compare = _access_interface_entry_compare_name;
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netsnmp_container_add_index(container1, container2);
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* load interface information in specified container
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* @param container empty container, or NULL to have one created for you
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* @param load_flags flags to modify behaviour. Examples:
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* NETSNMP_ACCESS_INTERFACE_INIT_ADDL_IDX_BY_NAME
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* @retval !NULL pointer to container
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#ifndef NETSNMP_ACCESS_INTERFACE_NOARCH
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netsnmp_access_interface_container_load(netsnmp_container* container, u_int load_flags)
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DEBUGMSGTL(("access:interface:container", "load\n"));
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netsnmp_assert(1 == _access_interface_init);
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if (NULL == container)
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container = netsnmp_access_interface_container_init(load_flags);
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if (NULL == container) {
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snmp_log(LOG_ERR, "no container specified/found for access_interface\n");
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rc = netsnmp_arch_interface_container_load(container, load_flags);
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netsnmp_access_interface_container_free(container,
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NETSNMP_ACCESS_INTERFACE_FREE_NOFLAGS);
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netsnmp_access_interface_container_free(netsnmp_container *container, u_int free_flags)
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DEBUGMSGTL(("access:interface:container", "free\n"));
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if (NULL == container) {
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snmp_log(LOG_ERR, "invalid container for netsnmp_access_interface_free\n");
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if(! (free_flags & NETSNMP_ACCESS_INTERFACE_FREE_DONT_CLEAR)) {
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CONTAINER_CLEAR(container,
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(netsnmp_container_obj_func*)_access_interface_entry_release,
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CONTAINER_FREE(container);
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* @retval 0 interface not found
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netsnmp_access_interface_index_find(const char *name)
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DEBUGMSGTL(("access:interface:find", "index\n"));
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netsnmp_assert(1 == _access_interface_init);
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return netsnmp_arch_interface_index_find(name);
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/**---------------------------------------------------------------------*/
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netsnmp_interface_entry *
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netsnmp_access_interface_entry_get_by_index(netsnmp_container *container, oid index)
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DEBUGMSGTL(("access:interface:entry", "by_index\n"));
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netsnmp_assert(1 == _access_interface_init);
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if (NULL == container) {
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"invalid container for netsnmp_access_interface_entry_get_by_index\n");
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return (netsnmp_interface_entry *) CONTAINER_FIND(container, &tmp);
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netsnmp_interface_entry *
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netsnmp_access_interface_entry_get_by_name(netsnmp_container *container,
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netsnmp_interface_entry tmp;
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DEBUGMSGTL(("access:interface:entry", "by_name\n"));
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netsnmp_assert(1 == _access_interface_init);
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if (NULL == container) {
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"invalid container for netsnmp_access_interface_entry_get_by_name\n");
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if (NULL == container->next) {
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"secondary index missing for netsnmp_access_interface_entry_get_by_name\n");
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return CONTAINER_FIND(container->next, &tmp);
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* @retval NULL index not found
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netsnmp_access_interface_name_find(oid index)
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DEBUGMSGTL(("access:interface:find", "name\n"));
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netsnmp_assert(1 == _access_interface_init);
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return se_find_label_in_slist("interfaces", index);
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netsnmp_interface_entry *
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netsnmp_access_interface_entry_create(const char *name, oid if_index)
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netsnmp_interface_entry *entry =
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SNMP_MALLOC_TYPEDEF(netsnmp_interface_entry);
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DEBUGMSGTL(("access:interface:entry", "create\n"));
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netsnmp_assert(1 == _access_interface_init);
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entry->name = strdup(name);
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* get if index, and save name for reverse lookup
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#ifndef NETSNMP_ACCESS_INTERFACE_NOARCH
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entry->index = netsnmp_access_interface_index_find(name);
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entry->index = if_index;
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_access_interface_entry_save_name(name, entry->index);
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* until we can get actual description, leave descr NULL.
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* The end user can decide what to do with it.
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/* entry->descr = strdup("unknown"); */
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* make some assumptions
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entry->connector_present = 1;
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entry->oid_index.len = 1;
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entry->oid_index.oids = (oid *) & entry->index;
312
netsnmp_access_interface_entry_free(netsnmp_interface_entry * entry)
314
DEBUGMSGTL(("access:interface:entry", "free\n"));
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* SNMP_FREE not needed, for any of these,
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* since the whole entry is about to be freed
324
if (NULL != entry->old_stats)
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free(entry->old_stats);
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if (NULL != entry->name)
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if (NULL != entry->descr)
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if (NULL != entry->paddr)
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* @retval 0 : success
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* @retval < 0 : error
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#ifndef NETSNMP_ACCESS_INTERFACE_NOARCH
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netsnmp_access_interface_entry_set_admin_status(netsnmp_interface_entry * entry,
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DEBUGMSGTL(("access:interface:entry", "set_admin_status\n"));
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if ((ifAdminStatus < IFADMINSTATUS_UP) ||
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(ifAdminStatus > IFADMINSTATUS_TESTING))
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rc = netsnmp_arch_set_admin_status(entry, ifAdminStatus);
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if (0 == rc) /* success */
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entry->admin_status = ifAdminStatus;
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/**---------------------------------------------------------------------*/
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_access_interface_entry_compare_name(const void *lhs, const void *rhs)
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return strcmp(((const netsnmp_interface_entry *) lhs)->name,
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((const netsnmp_interface_entry *) rhs)->name);
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_access_interface_entry_release(netsnmp_interface_entry * entry, void *context)
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netsnmp_access_interface_entry_free(entry);
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_access_interface_entry_save_name(const char *name, oid index)
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tmp = se_find_value_in_slist("interfaces", name);
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se_add_pair_to_slist("interfaces", strdup(name), index);
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DEBUGMSGTL(("access:interface:ifIndex", "saved ifIndex %d for %s\n",
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netsnmp_assert(index == tmp);
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* @retval 0 : success
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netsnmp_access_interface_entry_update_stats(netsnmp_interface_entry * prev_vals,
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netsnmp_interface_entry * new_vals)
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DEBUGMSGTL(("access:interface", "check_wrap\n"));
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if ((NULL == prev_vals) || (NULL == new_vals) ||
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(NULL == prev_vals->name) || (NULL == new_vals->name) ||
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(0 != strncmp(prev_vals->name, new_vals->name, strlen(prev_vals->name))))
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* if we've determined that we have 64 bit counters, just copy them.
433
if (0 == need_wrap_check) {
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memcpy(&prev_vals->stats, &new_vals->stats, sizeof(new_vals->stats));
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if (NULL == prev_vals->old_stats) {
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* if we don't have old stats, copy previous stats
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prev_vals->old_stats = SNMP_MALLOC_TYPEDEF(netsnmp_interface_stats);
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if (NULL == prev_vals->old_stats) {
446
memcpy(prev_vals->old_stats, &prev_vals->stats, sizeof(new_vals->stats));
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netsnmp_c64_check32_and_update(&prev_vals->stats.ibytes,
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&new_vals->stats.ibytes,
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&prev_vals->old_stats->ibytes,
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netsnmp_c64_check32_and_update(&prev_vals->stats.iucast,
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&new_vals->stats.iucast,
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&prev_vals->old_stats->iucast,
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netsnmp_c64_check32_and_update(&prev_vals->stats.imcast,
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&new_vals->stats.imcast,
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&prev_vals->old_stats->imcast,
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netsnmp_c64_check32_and_update(&prev_vals->stats.ibcast,
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&new_vals->stats.ibcast,
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&prev_vals->old_stats->ibcast,
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netsnmp_c64_check32_and_update(&prev_vals->stats.obytes,
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&new_vals->stats.obytes,
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&prev_vals->old_stats->obytes,
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netsnmp_c64_check32_and_update(&prev_vals->stats.oucast,
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&new_vals->stats.oucast,
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&prev_vals->old_stats->oucast,
473
netsnmp_c64_check32_and_update(&prev_vals->stats.omcast,
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&new_vals->stats.omcast,
475
&prev_vals->old_stats->omcast,
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netsnmp_c64_check32_and_update(&prev_vals->stats.obcast,
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&new_vals->stats.obcast,
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&prev_vals->old_stats->obcast,
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* if we've decided we no longer need to check wraps, free old stats
485
if (0 == need_wrap_check) {
486
SNMP_FREE(prev_vals->old_stats);
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* update old stats from new stats.
491
* careful - old_stats is a pointer to stats...
493
memcpy(prev_vals->old_stats, &new_vals->stats, sizeof(new_vals->stats));
500
* copy interface entry data (after checking for counter wraps)
502
* @retval -2 : malloc failed
503
* @retval -1 : interfaces not the same
504
* @retval 0 : no error
507
netsnmp_access_interface_entry_copy(netsnmp_interface_entry * lhs,
508
netsnmp_interface_entry * rhs)
510
DEBUGMSGTL(("access:interface", "copy\n"));
512
if ((NULL == lhs) || (NULL == rhs) ||
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(NULL == lhs->name) || (NULL == rhs->name) ||
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(0 != strncmp(lhs->name, rhs->name, strlen(rhs->name))))
520
netsnmp_access_interface_entry_update_stats(lhs, rhs);
525
lhs->ns_flags = rhs->ns_flags;
526
if((NULL != lhs->descr) && (NULL != rhs->descr) &&
527
(0 == strcmp(lhs->descr, rhs->descr)))
530
if (NULL != lhs->descr)
531
SNMP_FREE(lhs->descr);
533
lhs->descr = strdup(rhs->descr);
534
if(NULL == lhs->descr)
538
lhs->type = rhs->type;
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lhs->speed = rhs->speed;
540
lhs->speed_high = rhs->speed_high;
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lhs->discontinuity = rhs->discontinuity;
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lhs->oper_status = rhs->oper_status;
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lhs->promiscuous = rhs->promiscuous;
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lhs->connector_present = rhs->connector_present;
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lhs->os_flags = rhs->os_flags;
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if(lhs->paddr_len == rhs->paddr_len) {
549
memcpy(lhs->paddr,rhs->paddr,rhs->paddr_len);
551
if (NULL != lhs->paddr)
552
SNMP_FREE(lhs->paddr);
554
lhs->paddr = malloc(rhs->paddr_len);
555
if(NULL == lhs->paddr)
557
memcpy(lhs->paddr,rhs->paddr,rhs->paddr_len);
560
lhs->paddr_len = rhs->paddr_len;
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netsnmp_access_interface_entry_guess_speed(netsnmp_interface_entry *entry)
568
if (entry->type == IANAIFTYPE_ETHERNETCSMACD)
569
entry->speed = 10000000;
570
else if (entry->type == IANAIFTYPE_SOFTWARELOOPBACK)
571
entry->speed = 10000000;
572
else if (entry->type == IANAIFTYPE_ISO88025TOKENRING)
573
entry->speed = 4000000;
578
netsnmp_conf_if_list *
579
netsnmp_access_interface_entry_overrides_get(const char * name)
581
netsnmp_conf_if_list * if_ptr;
583
netsnmp_assert(1 == _access_interface_init);
587
for (if_ptr = conf_list; if_ptr; if_ptr = if_ptr->next)
588
if (!strcmp(if_ptr->name, name))
595
netsnmp_access_interface_entry_overrides(netsnmp_interface_entry *entry)
597
netsnmp_conf_if_list * if_ptr;
599
netsnmp_assert(1 == _access_interface_init);
604
* enforce mib size limit
606
if(entry->descr && (strlen(entry->descr) > 255))
607
entry->descr[255] = 0;
610
netsnmp_access_interface_entry_overrides_get(entry->name);
612
entry->type = if_ptr->type;
613
entry->speed = if_ptr->speed;
617
/**---------------------------------------------------------------------*/
619
* interface config token
624
_parse_interface_config(const char *token, char *cptr)
626
netsnmp_conf_if_list *if_ptr, *if_new;
627
char *name, *type, *speed, *ecp;
630
name = strtok_r(cptr, " \t", &st);
632
config_perror("Missing NAME parameter");
635
type = strtok_r(NULL, " \t", &st);
637
config_perror("Missing TYPE parameter");
640
speed = strtok_r(NULL, " \t", &st);
642
config_perror("Missing SPEED parameter");
647
if (strcmp(if_ptr->name, name))
648
if_ptr = if_ptr->next;
652
config_pwarn("Duplicate interface specification");
653
if_new = SNMP_MALLOC_TYPEDEF(netsnmp_conf_if_list);
655
config_perror("Out of memory");
658
if_new->speed = strtoul(speed, &ecp, 0);
660
config_perror("Bad SPEED value");
664
if_new->type = strtol(type, &ecp, 0);
665
if (*ecp || if_new->type < 0) {
666
config_perror("Bad TYPE");
670
if_new->name = strdup(name);
672
config_perror("Out of memory");
676
if_new->next = conf_list;
681
_free_interface_config(void)
683
netsnmp_conf_if_list *if_ptr = conf_list, *if_next;
685
if_next = if_ptr->next;
added
removed
agent/mibgroup/if-mib/data_access/interface_common.c
