1.\" Copyright (c) 1983, 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: @(#)vv.4 6.5 (Berkeley) 3/27/91 33.\" $Id: vv.4,v 1.2 1993/08/01 07:35:50 mycroft Exp $ 34.\" 35.Dd March 27, 1991 36.Dt VV 4 vax 37.Os BSD 4.2 38.Sh NAME 39.Nm vv 40.Nd Proteon proNET 10 Megabit ring 41.Sh SYNOPSIS 42.Cd "device vv0 at uba0 csr 0161000 vector vvrint vvxint" 43.Sh DESCRIPTION 44The 45.Nm vv 46interface provides access to a 10 Mb/s Proteon 47.Tn proNET 48ring network. 49.Pp 50The network address of the interface must be specified with an 51an 52.Dv SIOCSIFADDR 53.Xr ioctl 2 54before data can be transmitted or received. 55It is only permissible to change the network address while the 56interface is marked 57.Dq down . 58.Pp 59The host's hardware address is discovered by putting the interface in 60digital loopback mode (not joining the ring) and sending a broadcast 61packet from which the hardware address is extracted. 62.Pp 63Transmit timeouts are detected through use of a watchdog routine. 64Lost input interrupts are checked for when packets are sent out. 65.Pp 66If the installation is running 67.Tn CTL 68boards which use the old broadcast 69address of 70.Ql 0 71instead of the new address of 72.Ql 0xff , 73the define 74.Dv OLD_BROADCAST 75should be specified in the driver. 76.Pp 77The driver can use 78.Dq trailer 79encapsulation to minimize copying 80data on input and output. 81This may be disabled, on a per-interface basis, 82by setting the 83.Dv IFF_NOTRAILERS 84flag with an 85.Dv SIOCSIFFLAGS 86.Xr ioctl . 87.Sh DIAGNOSTICS 88.Bl -diag 89.It vv%d: host %d. 90The software announces the host 91address discovered during autoconfiguration. 92.Pp 93.It vv%d: can't initialize. 94The software was unable to 95discover the address of this interface, so it deemed 96"dead" will not be enabled. 97.Pp 98.It vv%d: error vvocsr=%b. 99The hardware indicated an error on 100the previous transmission. 101.Pp 102.It vv%d: output timeout. 103The token timer has fired and the 104token will be recreated. 105.Pp 106.It vv%d: error vvicsr=%b. 107The hardware indicated an error 108in reading a packet off the ring. 109.Pp 110.It en%d: can't handle af%d. 111The interface was handed 112a message with addresses formatted in an unsuitable address 113family; the packet was dropped. 114.Pp 115.It vv%d: vs_olen=%d. 116The ring output routine has been 117handed a message with a preposterous length. This results in 118an immediate 119.Em panic: vs_olen . 120.El 121.Sh SEE ALSO 122.Xr netintro 4 , 123.Xr inet 4 124.Sh HISTORY 125The 126.Nm 127driver appeared in 128.Bx 4.2 . 129.Sh BUGS 130The encapsulation of trailer packets in the 131.Bx 4.2 132version of this driver 133was incorrect (the packet type was in 134.Tn VAX 135byte order). 136As a result, the trailer encapsulation in this version is not compatible 137with the 138.Bx 4.2 139.Tn VAX 140version. 141