VLAN_TAG_SIZE
(((length) > ((adapter)->min_frame_size - VLAN_TAG_SIZE)) && \
((length) <= ((adapter)->max_frame_size + VLAN_TAG_SIZE + 1)))))
macp->m_margin = VLAN_TAG_SIZE;
(((length) > ((min_frame_size) - VLAN_TAG_SIZE)) && \
((length) <= ((max_frame_size) + VLAN_TAG_SIZE + 1)))))