DB_TX
DB_TX(3, "hwm_tx_init: fc = %x, len = %d", fc, frame_len);
DB_TX(2, "Ring is down: terminate LAN_TX");
DB_TX(2, "Out of TxDs, terminate LAN_TX");
DB_TX(2, "Out of TxDs, terminate LAN_TX");
DB_TX(3, "frame_status = %x", frame_status);
DB_TX(2, "hwm_tx_frag: len = %d, frame_status = %x", len, frame_status);
DB_TX(3, "LAN_TX: TxD = %p, virt = %p", t, virt);
DB_TX(3, "LOC_TX:");
DB_TX(4, "No SMbuf; transmit terminated");
DB_TX(3, "copy fragment into MBuf");
DB_TX(3, "pass LLC frame to SMT");
DB_TX(4, "smt_send_mbuf: mb = 0x%p, fc = 0x%x", mb, fc);
DB_TX(5, "frag: virt/len = 0x%p/%d", data, n);
DB_TX(2, "Ring is down: terminate LAN_TX");
DB_TX(2, "Ring is down: terminate transmission");
DB_TX(5, "frame_status = 0x%x", frame_status);
DB_TX(5, "init TxD = 0x%p", t);
DB_TX(5, "pass Mbuf to LLC queue");
DB_TX(5, "clear_txd: QUEUE = %d (0=sync/1=async)", i);
DB_TX(5, "check OWN/EOF bit of TxD 0x%p", t1);
DB_TX(4, "End of TxDs queue %d", i);
DB_TX(4, "mac_drv_tx_comp for TxD 0x%p", t2);
DB_TX(4, "mac_drv_tx_comp for TxD 0x%x",
DB_TX(5, "clear_tx_queue: QUEUE = %d (0=sync/1=async)", i);
DB_TX(5, "switch OWN bit of TxD 0x%p", t);