111 lines
3.7 KiB
Groff
111 lines
3.7 KiB
Groff
.\" $NetBSD: ex.4,v 1.7 1999/12/15 23:44:55 abs Exp $
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.\"
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.\" Copyright (c) 1986, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)ex.4 8.1 (Berkeley) 6/5/93
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.\"
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.Dd June 5, 1993
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.Dt EX 4 vax
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.Os
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.Sh NAME
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.Nm ex
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.Nd Excelan 10 Mb/s Ethernet interface
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.Sh SYNOPSIS
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.Cd "ex0 at uba0 csr 164000 vector excdint"
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.Sh DESCRIPTION
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The
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.Nm ex
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interface provides access to a 10 Mb/s Ethernet network through
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an Excelan controller used as a link-layer interface.
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.Pp
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Each of the host's network addresses
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is specified at boot time with an
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.Dv SIOCSIFADDR
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.Xr ioctl 2 .
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The
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.Nm ex
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interface employs the address resolution protocol described in
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.Xr arp 4
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to dynamically map between Internet and Ethernet addresses on the local
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network.
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.Pp
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The interface normally tries to use a
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.Dq trailer
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encapsulation
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to minimize copying data on input and output.
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The use of trailers is negotiated with
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.Tn ARP .
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This negotiation may be disabled, on a per-interface basis,
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by setting the
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.Dv IFF_NOTRAILERS
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flag with an
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.Dv SIOCSIFFLAGS
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.Xr ioctl .
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "ex%d: HW %c.%c, NX %c.%c, hardware address %s."
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This provides firmware revisions levels, and is expected during
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autoconfiguration.
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.Pp
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.It ex%d: can't initialize.
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There was a failure in allocating unibus resources for the device.
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.Pp
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.It "ex%d: configuration failed; cc = %x."
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The hardware indicated an error when trying to initialize itself.
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The error code returned is described at length in the device
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Reference Manual.
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.Pp
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.It ex%d: receive error %b.
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The hardware indicated an error
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in reading a packet from the cable.
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Specific Error bits are provided
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.Pp
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.It ex%d: transmit error %b.
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The hardware indicated an error
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in transmitting a packet to the cable or an illegally sized packet.
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Specific Error bits are provided
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.Pp
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.It ex%d: can't handle af%d.
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The interface was handed
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a message with addresses formatted in an unsuitable address
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family; the packet was dropped.
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.El
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.Sh SEE ALSO
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.Xr netintro 4 ,
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.Xr inet 4 ,
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.Xr arp 4
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.Sh HISTORY
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The
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.Nm
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driver appeared in
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.Bx 4.3 .
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