#define MAC_HASH_MASK (MAC_HASH_SIZE - 1)
#define MAC_HASH_SIZE (1u << MAC_HASH_BITS)
-#define MAC_MAX 1024
+#define MAC_MAX 2048
+
+/* Time, in seconds, before expiring a mac_entry due to inactivity. */
+#define MAC_ENTRY_IDLE_TIME 60
/* A MAC learning table entry. */
struct mac_entry {
tag_type tag; /* Tag for this learning entry. */
};
+int mac_entry_age(const struct mac_entry *);
+
/* MAC learning table. */
struct mac_learning {
struct list free; /* Not-in-use entries. */