TX_OVERHEAD      2734 drivers/net/usb/lan78xx.c 	if (skb_cow_head(skb, TX_OVERHEAD)) {
TX_OVERHEAD      2989 drivers/net/usb/lan78xx.c 	dev->net->hard_header_len += TX_OVERHEAD;
TX_OVERHEAD      3341 drivers/net/usb/lan78xx.c 			length = skb->len - TX_OVERHEAD;
TX_OVERHEAD      3364 drivers/net/usb/lan78xx.c 			length += (skb2->len - TX_OVERHEAD);
TX_OVERHEAD      3676 drivers/net/usb/lan78xx.c 	if (skb->len + TX_OVERHEAD > MAX_SINGLE_PACKET_SIZE)