1 files changed, 83 insertions, 0 deletions
diff --git a/agent/mibgroup/ip-mib/data_access/arp_common.c b/agent/mibgroup/ip-mib/data_access/arp_common.c
new file mode 100644
index 0000000..2958719
--- /dev/null
+++ b/agent/mibgroup/ip-mib/data_access/arp_common.c
@@ -0,0 +1,83 @@
+/*
+ *  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();
+}