1.\" $NetBSD: qe.4,v 1.4 1997/10/19 13:01:55 mrg Exp $ 2.\" 3.\" Copyright (c) 1983, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" from: @(#)qe.4 8.1 (Berkeley) 6/5/93 35.\" 36.Dd June 5, 1993 37.Dt QE 4 vax 38.Os BSD 4.3 39.Sh NAME 40.Nm qe 41.Nd 42.Tn DEC DEQNA 43.Tn Q-bus 4410 Mb/s Ethernet interface 45.Sh SYNOPSIS 46.Cd "device qe0 at uba? csr 174440 vector qeintr" 47.Sh DESCRIPTION 48The 49.Nm qe 50interface provides access to a 10 Mb/s Ethernet network through 51the 52.Tn DEC DEQNA 53.Tn Q-bus 54controller. 55.Pp 56Each of the host's network addresses 57is specified at boot time with an 58.Dv SIOCSIFADDR 59.Xr ioctl 2 . 60The 61.Nm qe 62interface employs the address resolution protocol described in 63.Xr arp 4 64to map dynamically between Internet and Ethernet addresses on the local 65network. 66.Pp 67The interface normally tries to use a 68.Dq trailer 69encapsulation 70to minimize copying data on input and output. 71The use of trailers is negotiated with 72.Tn ARP . 73This negotiation may be disabled, on a per-interface basis, 74by setting the 75.Dv IFF_NOTRAILERS 76flag with an 77.Dv SIOCSIFFLAGS 78.Xr ioctl . 79.Sh SEE ALSO 80.Xr netintro 4 , 81.Xr inet 4 , 82.Xr arp 4 83.Sh HISTORY 84The 85.Nm 86driver appeared in 87.Bx 4.3 . 88