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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 19:43:11 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 19:43:11 +0000
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Adding upstream version 4.22.0.upstream/4.22.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.\" Copyright (C) 2000 David A. Hinds -- dhinds@pcmcia.sourceforge.org
+.\"
+.TH MII\-TOOL 8 "2013\-02\-15" "net\-tools" "Linux System Administrator's Manual"
+
+.SH NAME
+mii\-tool \- view, manipulate media-independent interface status
+
+.SH SYNOPSIS
+.B mii\-tool
+[\fB\-v\fR, \fB\-\-verbose\fR]
+[\fB\-V\fR, \fB\-\-version\fR]
+[\fB\-R\fR, \fB\-\-reset\fR]
+[\fB\-r\fR, \fB\-\-restart\fR]
+[\fB\-w\fR, \fB\-\-watch\fR]
+[\fB\-l\fR, \fB\-\-log\fR]
+[\fB\-A\fR, \fB\-\-advertise=\fImedia,...\fR]
+[\fB\-F\fR, \fB\-\-force=\fImedia\fR]
+[\fB\-p\fR, \fB\-\-phy=\fIaddr\fR]
+.RI "interface\ ..."
+
+.SH NOTE
+.P
+This program is obsolete. For replacement check \fBethtool\fB.
+
+.SH DESCRIPTION
+This utility checks or sets the status of a network interface's Media
+Independent Interface (MII) unit. Most fast ethernet adapters use an
+MII to autonegotiate link speed and duplex setting.
+.PP
+Most intelligent network devices use an autonegotiation protocol to
+communicate what media technologies they support, and then select the
+fastest mutually supported media technology. The \fB\-A\fR or
+\fB\-\-advertise\fR options can be used to tell the MII to only
+advertise a subset of its capabilities. Some passive devices, such as
+single-speed hubs, are unable to autonegotiate. To handle such
+devices, the MII protocol also allows for establishing a link by
+simply detecting either a 10baseT or 100baseT link beat. The \fB\-F\fR
+or \fB\-\-force\fR options can be used to force the MII to operate in
+one mode, instead of autonegotiating. The \fB\-A\fR and \fB\-F\fR
+options are mutually exclusive.
+.PP
+The default short output reports the negotiated link speed and link
+status for each interface.
+.SH OPTIONS
+.TP
+\fB\-v\fR, \fB\-\-verbose\fR
+Display more detailed MII status information. If used twice, also
+display raw MII register contents.
+.br
+\fBAlert:\fR If used three times, will force reading all MII
+registers, including non standard ones. It's not guaranteed any
+valid answer from PHY while PHY communication can even hang.
+With driver e1000e will fail while reading register 0x07.
+.TP
+\fB\-V\fR, \fB\-\-version\fR
+Display program version information.
+.TP
+\fB\-R\fR, \fB\-\-reset\fR
+Reset the MII to its default configuration.
+.TP
+\fB\-r\fR, \fB\-\-restart\fR
+Restart autonegotiation.
+.TP
+\fB\-w\fR, \fB\-\-watch\fR
+Watch interface(s) and report changes in link status. The MII
+interfaces are polled at one second intervals.
+.TP
+\fB\-l\fR, \fB\-\-log\fR
+Used with \fB\-w\fR, records link status changes in the system log
+instead of printing on standard output.
+.TP
+\fB\-F\fI media\fR, \fB\-\-force=\fImedia\fR
+Disable autonegotiation, and force the MII to either \fB100baseTx-FD\fR,
+\fB100baseTx-HD\fR, \fB10baseT-FD\fR, or \fB10baseT-HD\fR operation.
+.TP
+\fB\-A\fI media,...\fR, \fB\-\-advertise=\fImedia,...\fR
+Enable and restart autonegotiation, and advertise only the specified
+media technologies. Multiple technologies should be separated by
+commas. Valid media are \fB100baseT4\fR, \fB100baseTx-FD\fR,
+\fB100baseTx-HD\fR, \fB10baseT-FD\fR, and \fB10baseT-HD\fR.
+.TP
+\fB\-p\fI addr\fR, \fB\-\-phy=\fIaddr\fR
+Override the MII address provided by kernel with value \fBaddr\fR.
+
+.SH DIAGNOSTICS
+.TP
+SIOCGMIIPHY on 'eth?' failed: Invalid argument
+If the interface is not running (up), kernel will refuse to report its link state.
+.TP
+SIOCGMIIPHY on 'eth?' failed: Operation not permitted
+Most kernels restrict access to root.
+.TP
+SIOCGMIIPHY on 'eth?' failed: No such device
+This error is shown, if the kernel does not know about the named device.
+.TP
+SIOCGMIIPHY on 'eth?' failed: Operation not supported
+The interface in question does not support MII queries. Most likely, it does not have
+MII transceivers, at all.
+
+.SH SEE ALSO
+ethtool(8)
+
+.SH AUTHORS
+David Hinds \- dhinds@pcmcia.sourceforge.org
+.br
+Donald Becker \- becker@scyld.com
+.br
+Bernd Eckenfels \- net-tools@lina.inka.de
+
+.SH SEE ALSO
+http://net-tools.sourceforge.net \- Homepage of the net-tools project