l2table_node
struct l2table_node *l2addr;
l2addr = l2addr_hash_find(mpfs->hash, mac, struct l2table_node);
l2addr = l2addr_hash_add(mpfs->hash, mac, struct l2table_node, GFP_KERNEL);
struct l2table_node *l2addr;
l2addr = l2addr_hash_find(mpfs->hash, mac, struct l2table_node);
struct l2table_node *l2addr;
struct l2table_node *l2addr;