CPSW_RX_VLAN_ENCAP_HDR_SIZE
headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
skb_pull(skb, CPSW_RX_VLAN_ENCAP_HDR_SIZE);
CPSW_RX_VLAN_ENCAP_HDR_SIZE)