1.\" Copyright (c) 1986, 1991 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" from: @(#)ix.4 6.5 (Berkeley) 3/27/91 33.\" $Id: ix.4,v 1.2 1993/08/01 07:36:12 mycroft Exp $ 34.\" 35.Dd March 27, 1991 36.Dt IX 4 vax 37.Os BSD 4.2 38.Sh NAME 39.Nm ix 40.Nd Interlan Np100 10 Mb/s Ethernet interface 41.Sh SYNOPSIS 42.Cd "device np0 at uba0 csr 166000 vector npintr" 43.Sh DESCRIPTION 44The 45.Nm ix 46interface provides access to a 10 Mb/s Ethernet network through 47an Interlan Np100 controller used as a link-layer interface. 48.Pp 49This interface is unusual in that it requires loading firmware 50into the controller before it may be used as a network interface. 51This is accomplished by opening a character special device, 52and writing data to it. 53A program to load the image is provided in 54.Pa /usr/src/new/np100 . 55The sequence of commands would be: 56.Bd -literal -offset indent 57# ./npload np.image [/dev/np<board #> if other than np00] 58# sleep 10 59# ifconfig ix0 ... 60.Ed 61.Pp 62Each of the host's network addresses 63is specified at boot time with an 64.Dv SIOCSIFADDR 65.Xr ioctl 2 . 66The 67.Nm ix 68interface employs the address resolution protocol described in 69.Xr arp 4 70to dynamically map between Internet and Ethernet addresses on the local 71network. 72.Pp 73The interface normally tries to use a 74.Dq trailer 75encapsulation 76to minimize copying data on input and output. 77The use of trailers is negotiated with 78.Tn ARP . 79This negotiation may be disabled, on a per-interface basis, 80by setting the 81.Dv IFF_NOTRAILERS 82flag with an 83.Dv SIOCSIFFLAGS 84.Xr ioctl . 85.Sh DIAGNOSTICS 86.Bl -diag 87.It "ix%d: Req failed, cmd %x, stat %x, ust error %x,%x." 88The firmware in the controller refused to honor a request from 89.Tn UNIX 90in initializing packet level communications. 91The board may need to be reset and reloaded. 92Or, you may not have allowed enough time between loading the board 93and issuing the request to begin unix network operation. 94.Pp 95.It ix%d: can't initialize. 96The interface was unable to obtain unibus resources required for operation. 97.Pp 98.It ix%d: failed to reinitialize DLA module. 99The interface got sick after attempting to reprogram its physical 100ethernet address. Try reloading the firmware. 101The attempt is made only when this interfaces is not the first 102one configured for 103.Tn XNS . 104.Pp 105.It ix%d: can't handle af%d. 106The interface was handed 107a message with addresses formatted in an unsuitable address 108family; the packet was dropped. 109.Pp 110.It ix%d: stray xmit interrupt, npreq=%x. 111This may happen if the board is reloaded while network processes are still 112running. 113.Pp 114.It ixrint: cqe error %x, %x, %x. 115This will result if an 116.Xr ifconfig 8 117request is made at an inopportune time, such as not allowing 118enough time after loading the firmware. 119After 100 such errors are logged, the unix network driver will 120shut itself down, saying: 121.Pp 122.It ixrint: shutting down unix dla. 123The recourse is to reload the firmware and allow more time. 124.El 125.Sh SEE ALSO 126.Xr netintro 4 , 127.Xr inet 4 , 128.Xr arp 4 , 129.Xr np 4 . 130.Sh HISTORY 131The 132.Nm 133driver appeared in 134.Bx 4.3 . 135