tx_pkt_header
struct tx_pkt_header *txph;
txph = (struct tx_pkt_header *)
struct tx_pkt_header *txph;
if (skb->len + sizeof(struct tx_pkt_header) + 4 > txbuf_unused ||
txph = (struct tx_pkt_header *) (((u8 *)adapter->txd_ring) + offset);
struct tx_pkt_header *txd_ring;