/*

 *  Arp MIB architecture support

 *

 * $Id$

 */

#include <net-snmp/net-snmp-config.h>

#include <net-snmp/net-snmp-includes.h>

#include <net-snmp/agent/net-snmp-agent-includes.h>

#include <net-snmp/data_access/arp.h>

/**---------------------------------------------------------------------*/

/*

 * arp_entry functions

 */

/**

 */

netsnmp_arp_entry *

netsnmp_access_arp_entry_create(void)

{

    netsnmp_arp_entry *entry =

        SNMP_MALLOC_TYPEDEF(netsnmp_arp_entry);

    if (NULL == entry)

        return NULL;

    entry->oid_index.len = 1;

    entry->oid_index.oids = &entry->ns_arp_index;

    return entry;

}

/**

 */

void

netsnmp_access_arp_entry_free(netsnmp_arp_entry * entry)

{

    free(entry);

}

/**---------------------------------------------------------------------*/

/*

 * Utility routines

 */

/**

 * Update given entry with new data. Calculate new arp_last_updated, if any

 * field is changed.

 */

void netsnmp_access_arp_entry_update(netsnmp_arp_entry *entry,

        netsnmp_arp_entry *new_data)

{

    int modified = 0;

    entry->generation = new_data->generation;

    if (entry->arp_ipaddress_len != new_data->arp_ipaddress_len

            || memcmp(entry->arp_ipaddress, new_data->arp_ipaddress, entry->arp_ipaddress_len) != 0 ) {

        modified = 1;

        entry->arp_ipaddress_len = new_data->arp_ipaddress_len;

        memcpy(entry->arp_ipaddress, new_data->arp_ipaddress, sizeof(entry->arp_ipaddress));

    }

    if (entry->arp_physaddress_len != new_data->arp_physaddress_len ||

            memcmp(entry->arp_physaddress, new_data->arp_physaddress, entry->arp_physaddress_len) != 0) {

         modified = 1;

         entry->arp_physaddress_len = new_data->arp_physaddress_len;

         memcpy(entry->arp_physaddress, new_data->arp_physaddress, sizeof(entry->arp_physaddress_len));

     }

    if (entry->arp_state != new_data->arp_state) {

         modified = 1;

         entry->arp_state = new_data->arp_state;

     }

    if (entry->arp_type != new_data->arp_type) {

         modified = 1;

         entry->arp_type = new_data->arp_type;

     }

    if (entry->flags != new_data->flags) {

         modified = 1;

         entry->flags = new_data->flags;

     }

    if (modified)

        entry->arp_last_updated = netsnmp_get_agent_uptime();

}