.\" -*- nroff -*-
.\" Copyright 1999 by David S. Miller.  All Rights Reserved.
.\" Portions Copyright 2001 Sun Microsystems
.\" This file may be copied under the terms of the GNU Public License.
.\" 
.\"	.An - list of n alternative values as in "flav vanilla|strawberry"
.\"
.de A1
\\fB\\$1\\fP|\\fB\\$2\\fP
..
.de A2
\\fB\\$1\\fP\ \\fB\\$2\\fP|\\fB\\$3\\fP
..
.de A3
\\fB\\$1\\fP\ \\fB\\$2\\fP|\\fB\\$3\\fP|\\fB\\$4\\fP
..
.de A4
\\fB\\$1\\fP\ \\fB\\$2\\fP|\\fB\\$3\\fP|\\fB\\$4\\fP|\\fB\\$5\\fP
..
.\" 
.\"	.Bn - same as above but framed by square brackets
.\"
.de B1
[\\fB\\$1\\fP|\\fB\\$2\\fP]
..
.de B2
[\\fB\\$1\\fP\ \\fB\\$2\\fP|\\fB\\$3\\fP]
..
.de B3
[\\fB\\$1\\fP\ \\fB\\$2\\fP|\\fB\\$3\\fP|\\fB\\$4\\fP]
..
.de B4
[\\fB\\$1\\fP\ \\fB\\$2\\fP|\\fB\\$3\\fP|\\fB\\$4\\fP|\\fB\\$5\\fP]
..
.\"
.\"	\(*MA - mac address
.\"
.ds MA \fIxx\fP\fB:\fP\fIyy\fP\fB:\fP\fIzz\fP\fB:\fP\fIaa\fP\fB:\fP\fIbb\fP\fB:\fP\fIcc\fP
.\"
.\"	\(*WO - wol flags
.\"
.ds WO \fBp\fP|\fBu\fP|\fBm\fP|\fBb\fP|\fBa\fP|\fBg\fP|\fBs\fP|\fBd\fP...
.\"
.\"	\(*FL - flow type values
.\"
.ds FL \fBtcp4\fP|\fBudp4\fP|\fBah4\fP|\fBsctp4\fP|\fBtcp6\fP|\fBudp6\fP|\fBah6\fP|\fBsctp6\fP
.\"
.\"	\(*HO - hash options
.\"
.ds HO \fBp\fP|\fm\fP|\fBv\fP|\fBt\fP|\fBs\fP|\fBd\fP|\fBf\fP|\fBn\fP|\fBr\fP...
.TH ETHTOOL 8 "July 2007" "Ethtool version 6"
.SH NAME
ethtool \- Display or change ethernet card settings
.SH SYNOPSIS
.B ethtool
.I ethX

.B ethtool \-h|\-\-help

.B ethtool \-a|\-\-show\-pause
.I ethX

.B ethtool \-A|\-\-pause
.I ethX
.B2 autoneg on off
.B2 rx on off
.B2 tx on off

.B ethtool \-c|\-\-show\-coalesce
.I ethX

.B ethtool \-C|\-\-coalesce
.I ethX
.B2 adaptive-rx on off
.B2 adaptive-tx on off
.RB [ rx-usecs
.IR N ]
.RB [ rx-frames
.IR N ]
.RB [ rx-usecs-irq
.IR N ]
.RB [ rx-frames-irq
.IR N ]
.RB [ tx-usecs
.IR N ]
.RB [ tx-frames
.IR N ]
.RB [ tx-usecs-irq
.IR N ]
.RB [ tx-frames-irq
.IR N ]
.RB [ stats-block-usecs
.IR N ]
.RB [ pkt-rate-low
.IR N ]
.RB [ rx-usecs-low
.IR N ]
.RB [ rx-frames-low
.IR N ]
.RB [ tx-usecs-low
.IR N ]
.RB [ tx-frames-low
.IR N ]
.RB [ pkt-rate-high
.IR N ]
.RB [ rx-usecs-high
.IR N ]
.RB [ rx-frames-high
.IR N ]
.RB [ tx-usecs-high
.IR N ]
.RB [ tx-frames-high
.IR N ]
.RB [ sample-interval
.IR N ]

.B ethtool \-g|\-\-show\-ring
.I ethX

.B ethtool \-G|\-\-set\-ring
.I ethX
.RB [ rx
.IR N ]
.RB [ rx-mini
.IR N ]
.RB [ rx-jumbo
.IR N ]
.RB [ tx
.IR N ]

.B ethtool \-i|\-\-driver
.I ethX

.B ethtool \-d|\-\-register\-dump
.I ethX
.B2 raw on off
.B2 hex on off
.RB [ file 
.IR name ]

.B ethtool \-e|\-\-eeprom\-dump
.I ethX
.B2 raw on off
.RB [ offset
.IR N ]
.RB [ length
.IR N ]

.B ethtool \-E|\-\-change\-eeprom
.I ethX
.RB [ magic
.IR N ]
.RB [ offset
.IR N ]
.RB [ value
.IR N ]

.B ethtool \-k|\-\-show\-offload
.I ethX

.B ethtool \-K\-\-offload
.I ethX
.B2 rx on off
.B2 tx on off
.B2 sg on off
.B2 tso on off
.B2 ufo on off
.B2 gso on off

.B ethtool \-p|\-\-blink
.I ethX
.IR [ N ]

.B ethtool \-r|\-\-negotiate
.I ethX

.B ethtool \-S|\-\-statistics
.I ethX

.B ethtool \-t|\-\-test
.I ethX
.B1 offline online

.B ethtool \-s
.I ethX
.B4 speed 10 100 1000 2500 10000
.B2 duplex half full
.B4 port tp aui bnc mii fibre
.B2 autoneg on off
.RB [ advertise
.IR N ]
.RB [ phyad
.IR N ]
.B2 xcvr internal external
.RB [ wol \ \*(WO]
.RB [ sopass \ \*(MA]
.RB [ msglvl
.IR N ]

.B ethtool \-n
.I ethX
.RB [ rx-flow-hash \ \*(FL]

.B ethtool \-N
.I ethX
.RB [ rx-flow-hash \ \*(FL
.RB \ \*(HO]
.SH DESCRIPTION
.BI ethtool
is used for querying settings of an ethernet device and changing them.

.I ethX
is the name of the ethernet device on which ethtool should operate.

.SH OPTIONS
.B ethtool
with a single argument specifying the device name prints current
settings of the specified device.
.TP
.B \-h \-\-help
Shows a short help message.
.TP
.B \-a \-\-show\-pause
Queries the specified ethernet device for pause parameter information.
.TP
.B \-A \-\-pause
Changes the pause parameters of the specified ethernet device.
.TP
.A2 autoneg on off
Specifies whether pause autonegotiation should be enabled.
.TP
.A2 rx on off
Specifies whether RX pause should be enabled.
.TP
.A2 tx on off
Specifies whether TX pause should be enabled.
.TP
.B \-c \-\-show\-coalesce
Queries the specified ethernet device for coalescing information.
.TP
.B \-C \-\-coalesce
Changes the coalescing settings of the specified ethernet device.
.TP
.B \-g \-\-show\-ring
Queries the specified ethernet device for rx/tx ring parameter information.
.TP
.B \-G \-\-set\-ring
Changes the rx/tx ring parameters of the specified ethernet device.
.TP
.BI rx \ N
Changes the number of ring entries for the Rx ring.
.TP
.BI rx-mini \ N
Changes the number of ring entries for the Rx Mini ring.
.TP
.BI rx-jumbo \ N
Changes the number of ring entries for the Rx Jumbo ring.
.TP
.BI tx \ N
Changes the number of ring entries for the Tx ring.
.TP
.B \-i \-\-driver
Queries the specified ethernet device for associated driver information.
.TP
.B \-d \-\-register\-dump
Retrieves and prints a register dump for the specified ethernet device.
The register format for some devices is known and decoded others
are printed in hex.
When 
.I raw 
is enabled, then ethtool dumps the raw register data to stdout.
If
.I file
is specified, then use contents of previous raw register dump, rather
than reading from the device.

.TP
.B \-e \-\-eeprom\-dump
Retrieves and prints an EEPROM dump for the specified ethernet device.
When raw is enabled, then it dumps the raw EEPROM data to stdout. The
length and offset parameters allow dumping certain portions of the EEPROM.
Default is to dump the entire EEPROM.
.TP
.B \-E \-\-change\-eeprom
Changes EEPROM byte for the specified ethernet device.  offset and value
specify which byte and it's new value.  Because of the persistent nature
of writing to the EEPROM, a device-specific magic key must be specified
to prevent the accidental writing to the EEPROM.
.TP
.B \-k \-\-show\-offload
Queries the specified ethernet device for offload information.
.TP
.B \-K \-\-offload
Changes the offload parameters of the specified ethernet device.
.TP
.A2 rx on off
Specifies whether RX checksumming should be enabled.
.TP
.A2 tx on off
Specifies whether TX checksumming should be enabled.
.TP
.A2 sg on off
Specifies whether scatter-gather should be enabled.
.TP
.A2 tso on off
Specifies whether TCP segmentation offload should be enabled.
.TP
.A2 ufo on off
Specifies whether UDP fragmentation offload should be enabled 
.TP
.A2 gso on off
Specifies whether generic segmentation offload should be enabled 
.TP
.B \-p \-\-identify
Initiates adapter-specific action intended to enable an operator to
easily identify the adapter by sight.  Typically this involves
blinking one or more LEDs on the specific ethernet port.
.TP
.B N
Length of time to perform phys-id, in seconds.
.TP
.B \-r \-\-negotiate
Restarts auto-negotiation on the specified ethernet device, if
auto-negotiation is enabled.
.TP
.B \-S \-\-statistics
Queries the specified ethernet device for NIC- and driver-specific
statistics.
.TP
.B \-t \-\-test
Executes adapter selftest on the specified ethernet device. Possible test modes are:
.TP
.A1 offline online
defines test type: 
.B offline
(default) means to perform full set of tests possibly causing normal operation interruption during the tests,
.B online
means to perform limited set of tests do not interrupting normal adapter operation.
.TP
.B \-s \-\-change
Allows changing some or all settings of the specified ethernet device.
All following options only apply if
.B \-s
was specified.
.TP
.A4 speed 10 100 1000 2500 10000
Set speed in Mb/s.
.B ethtool
with just the device name as an argument will show you the supported device speeds.
.TP
.A2 duplex half full
Sets full or half duplex mode.
.TP
.A4 port tp aui bnc mii fibre
Selects device port.
.TP
.A2 autoneg on off
Specifies whether autonegotiation should be enabled. Autonegotiation 
is enabled by deafult, but in some network devices may have trouble
with it, so you can disable it if really necessary. 
.TP
.BI advertise \ N
Sets the speed and duplex advertised by autonegotiation.  The argument is
a hexidecimal value using one or a combination of the following values:
.RS
.PD 0
.TP 3
.BR "0x001" "    10 Half"
.TP 3
.BR "0x002" "    10 Full"
.TP 3
.BR "0x004" "    100 Half"
.TP 3
.BR "0x008" "    100 Full"
.TP 3
.BR "0x010" "    1000 Half" "(not supported by IEEE standards)"
.TP 3
.BR "0x020" "    1000 Full"
.TP 3
.BR "0x8000" "   2500 Full" "(not supported by IEEE standards)"
.TP 3
.BR "0x1000" "   10000 Full"
.TP 3
.BR "0x03F" "    Auto"
.PD
.RE
.TP
.BI phyad \ N
PHY address.
.TP
.A2 xcvr internal external
Selects transceiver type. Currently only internal and external can be
specified, in the future further types might be added.
.TP
.BR wol \ \*(WO
Sets Wake-on-LAN options.  Not all devices support this.  The argument to 
this option is a string of characters specifying which options to enable.
.RS
.PD 0
.TP 3
.B p
Wake on phy activity
.TP 3
.B u
Wake on unicast messages
.TP 3
.B m
Wake on multicast messages
.TP 3
.B b
Wake on broadcast messages
.TP 3
.B a
Wake on ARP
.TP 3
.B g
Wake on MagicPacket(tm)
.TP 3
.B s
Enable SecureOn(tm) password for MagicPacket(tm)
.TP 3
.B d
Disable (wake on nothing).  This option clears all previous options.
.PD
.RE
.TP
.B sopass \*(MA\c
Sets the SecureOn(tm) password.  The argument to this option must be 6
bytes in ethernet MAC hex format (\*(MA).
.TP
.BI msglvl \ N
Sets the driver message level. Meanings differ per driver.
.TP
.B \-n \-\-show-nfc
Retrieves the receive network flow classification configurations.
.TP
.BR rx-flow-hash \ \*(FL
Retrieves the hash options for the specified network traffic type.
.RS
.PD 0
.TP 3
.BR "tcp4" "    TCP over IPv4"
.TP 3
.BR "udp4" "    UDP over IPv4"
.TP 3
.BR "ah4" "     IPSEC AH/ESP over IPv4"
.TP 3
.BR "sctp4" "   SCTP over IPv4"
.TP 3
.BR "tcp6" "    TCP over IPv6"
.TP 3
.BR "udp6" "    UDP over IPv6"
.TP 3
.BR "ah6" "     IPSEC AH/ESP over IPv6"
.TP 3
.BR "sctp6" "   SCTP over IPv6"
.PD
.RE
.TP
.B \-N \-\-config-nfc
Configures the receive network flow classification.
.TP
.BR rx-flow-hash \ \*(FL \ \*(HO
Configures the hash options for the specified network traffic type.
.RS
.PD 0
.TP 3
.B p
Hash on the device port number on which the packet was received.
.TP 3
.B m
Hash on the Layer 2 destination address of the rx packet.
.TP 3
.B v
Hash on the VLAN tag of the rx packet.
.TP 3
.B t
Hash on the Layer 3 protocol field of the rx packet.
.TP 3
.B s
Hash on the IP source address of the rx packet.
.TP 3
.B d
Hash on the IP destination address of the rx packet.
.TP 3
.B f
Hash on bytes 0 and 1 of the Layer 4 header of the rx packet.
.TP 3
.B n
Hash on bytes 2 and 3 of the Layer 4 header of the rx packet.
.TP 3
.B r
Discard all packets of this flow type. When this option is set, all other options are ignored.
.PD
.RE
.SH BUGS
Not supported (in part or whole) on all ethernet drivers.
.SH AUTHOR
.B ethtool
was written by David Miller.

Modifications by 
Jeff Garzik, 
Tim Hockin,
Jakub Jelinek,
Andre Majorel,
Eli Kupermann,
Scott Feldman,
Andi Kleen.
.SH AVAILABILITY
.B ethtool
is available over the Web on the SourceForge site at
http://sourceforge.net/projects/gkernel/