tx_head           100 dev/isa/if_ex.c   	u_int tx_head, tx_tail; /* Head and tail of transmit ring buffer. */
tx_head           379 dev/isa/if_ex.c 	sc->tx_head = sc->tx_tail = sc->tx_lower_limit;
tx_head           437 dev/isa/if_ex.c 		if ((i = sc->tx_tail - sc->tx_head) >= 0)
tx_head           504 dev/isa/if_ex.c 			if (sc->tx_head != sc->tx_tail) {
tx_head           528 dev/isa/if_ex.c 			if (sc->tx_head == sc->tx_tail) {
tx_head           531 dev/isa/if_ex.c 				sc->tx_head = dest;
tx_head           576 dev/isa/if_ex.c 	sc->tx_head = sc->tx_tail = sc->tx_lower_limit;
tx_head           652 dev/isa/if_ex.c 	while (sc->tx_head != sc->tx_tail) {
tx_head           653 dev/isa/if_ex.c 		ISA_PUT_2(HOST_ADDR_REG, sc->tx_head);
tx_head           657 dev/isa/if_ex.c 		sc->tx_head = ISA_GET_2(IO_PORT_REG);