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135 lines
4.2 KiB
Groff
135 lines
4.2 KiB
Groff
.\" Copyright (c) 2007-2008, Chelsio Inc
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.\" 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 are met:
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.\"
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.\" 1. Redistributions of source code must retain the above copyright notice,
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.\" this list of conditions and the following disclaimer.
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.\"
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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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.\"
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.\" 3. Neither the name of the Chelsio Inc nor the names of its
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.\" contributors may be used to endorse or promote products derived from
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.\" this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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.\" AND 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 COPYRIGHT OWNER OR CONTRIBUTORS BE
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.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" * Other names and brands may be claimed as the property of others.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd March 14, 2007
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.Dt CXGB 4
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.Os
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.Sh NAME
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.Nm cxgb
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.Nd "Chelsio T3 10 Gigabit Ethernet adapter driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device firmware"
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.Cd "device cxgb"
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.Ed
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.Pp
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To load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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if_cxgb_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver supports Transmit/Receive checksum offload,
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Jumbo Frames, TCP segmentation offload (TSO), Large Receive Offload (LRO),
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VLAN hardware insertion / extraction, and VLAN checksum offload.
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For further hardware information, see
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.Pa http://www.chelsio.com/ .
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.Pp
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For questions related to hardware requirements,
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refer to the documentation supplied with your Chelsio T3 adapter.
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All hardware requirements listed apply to use with
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.Fx .
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.Pp
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Support for Jumbo Frames is provided via the interface MTU setting.
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Selecting an MTU larger than 1500 bytes with the
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.Xr ifconfig 8
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utility configures the adapter to receive and transmit Jumbo Frames.
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The maximum MTU size for Jumbo Frames is 9000.
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.Pp
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For more information on configuring this device, see
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.Xr ifconfig 8 .
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.Sh HARDWARE
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The
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.Nm
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driver supports 10 Gigabit and 1 Gigabit Ethernet adapters based on the T3 and T3B chipset:
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.Pp
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.Bl -bullet -compact
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.It
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Chelsio 10GBase-CX4
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.It
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Chelsio 10GBase-LR
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.It
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Chelsio 10GBase-SR
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.El
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.Sh LOADER TUNABLES
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Tunables can be set at the
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.Xr loader 8
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prompt before booting the kernel or stored in
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.Xr loader.conf 5 .
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "cxgb%d: Unable to allocate bus resource: memory"
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A fatal initialization error has occurred.
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.It "cxgb%d: Unable to allocate bus resource: interrupt"
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A fatal initialization error has occurred.
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.It "cxgb%d: Could not find firmware image %s"
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The appropriate firmware kld module was not installed.
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This is a fatal initialization error.
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.El
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.Sh SUPPORT
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For general information and support,
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go to the Chelsio support website at:
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.Pa http://www.chelsio.com/ .
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.Pp
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If an issue is identified with the released source code on the supported kernel
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with a supported adapter, email the specific information related to the
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issue to
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.Aq Mt support@chelsio.com .
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.Sh SEE ALSO
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.Xr altq 4 ,
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.Xr arp 4 ,
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.Xr netintro 4 ,
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.Xr ng_ether 4 ,
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.Xr ifconfig 8
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Fx 6.3
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and
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.Fx 7.0 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Kip Macy Aq Mt kmacy@FreeBSD.org
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with substantial support from
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.An Scott Long Aq Mt scottl@FreeBSD.org .
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