824b228f1c
- remove self-reference in SEE ALSO section (originally was to s/XR/Xr) cxgbe.4: - remove blank line - add closing .El Reported by: manlint MFC after: 3 days
168 lines
5.1 KiB
Groff
168 lines
5.1 KiB
Groff
.\" Copyright (c) 2011, Chelsio Inc
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions are met:
|
|
.\"
|
|
.\" 1. Redistributions of source code must retain the above copyright notice,
|
|
.\" this list of conditions and the following disclaimer.
|
|
.\"
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" 3. Neither the name of the Chelsio Inc nor the names of its
|
|
.\" contributors may be used to endorse or promote products derived from
|
|
.\" this software without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
.\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" * Other names and brands may be claimed as the property of others.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd February 14, 2011
|
|
.Dt CXGBE 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm cxgbe
|
|
.Nd "Chelsio T4 10Gb and 1Gb Ethernet adapter driver"
|
|
.Sh SYNOPSIS
|
|
To compile this driver into the kernel,
|
|
place the following lines in your
|
|
kernel configuration file:
|
|
.Bd -ragged -offset indent
|
|
.Cd "device cxgbe"
|
|
.Ed
|
|
.Pp
|
|
To load the driver as a
|
|
module at boot time, place the following line in
|
|
.Xr loader.conf 5 :
|
|
.Bd -literal -offset indent
|
|
if_cxgbe_load="YES"
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver provides support for PCI Express Ethernet adapters based on
|
|
the Chelsio Terminator 4 (T4) ASIC.
|
|
The driver supprts Jumbo Frames, Transmit/Receive checksum offload,
|
|
TCP segmentation offload (TSO), Large Receive Offload (LRO), VLAN
|
|
tag insertion/extraction, VLAN checksum offload, VLAN TSO, and
|
|
Receive Side Steering (RSS).
|
|
For further hardware information and questions related to hardware
|
|
requirements, see
|
|
.Pa http://www.chelsio.com/ .
|
|
.Pp
|
|
For more information on configuring this device, see
|
|
.Xr ifconfig 8 .
|
|
.Sh HARDWARE
|
|
The
|
|
.Nm
|
|
driver supports 10Gb and 1Gb Ethernet adapters based on the T4 ASIC:
|
|
.Pp
|
|
.Bl -bullet -compact
|
|
.It
|
|
Chelsio T420-CR
|
|
.It
|
|
Chelsio T422-CR
|
|
.It
|
|
Chelsio T440-CR
|
|
.It
|
|
Chelsio T420-BCH
|
|
.It
|
|
Chelsio T440-BCH
|
|
.It
|
|
Chelsio T440-CH
|
|
.It
|
|
Chelsio T420-SO
|
|
.It
|
|
Chelsio T420-CX
|
|
.It
|
|
Chelsio T420-BT
|
|
.It
|
|
Chelsio T404-BT
|
|
.El
|
|
.Sh LOADER TUNABLES
|
|
Tunables can be set at the
|
|
.Xr loader 8
|
|
prompt before booting the kernel or stored in
|
|
.Xr loader.conf 5 .
|
|
.Bl -tag -width indent
|
|
.It Va hw.cxgbe.max_ntxq_10G_port
|
|
The maximum number of tx queues to use for a 10Gb port.
|
|
The default value is 8.
|
|
.It Va hw.cxgbe.max_nrxq_10G_port
|
|
The maximum number of rx queues to use for a 10Gb port.
|
|
The default value is 8.
|
|
.It Va hw.cxgbe.max_ntxq_1G_port
|
|
The maximum number of tx queues to use for a 1Gb port.
|
|
The default value is 2.
|
|
.It Va hw.cxgbe.max_nrxq_1G_port
|
|
The maximum number of rx queues to use for a 1Gb port.
|
|
The default value is 2.
|
|
.It Va hw.cxgbe.holdoff_timer_idx_10G
|
|
.It Va hw.cxgbe.holdoff_timer_idx_1G
|
|
The timer index value to use to delay interrupts.
|
|
The holdoff timer list has the values 1, 5, 10, 50, 100, and 200
|
|
by default (all values are in microseconds) and the index selects a
|
|
value from this list.
|
|
The default value is 1 for both 10Gb and 1Gb ports, which means the
|
|
timer value is 5us.
|
|
.It Va hw.cxgbe.holdoff_pktc_idx_10G
|
|
.It Va hw.cxgbe.holdoff_pktc_idx_1G
|
|
The packet-count index value to use to delay interrupts.
|
|
The packet-count list has the values 1, 8, 16, and 32 by default
|
|
and the index selects a value from this list.
|
|
The default value is 2 for both 10Gb and 1Gb ports, which means 16
|
|
packets (or the holdoff timer going off) before an interrupt is
|
|
generated.
|
|
.It Va hw.cxgbe.qsize_txq
|
|
The size, in number of entries, of the descriptor ring used for a tx
|
|
queue.
|
|
A buf_ring of the same size is also allocated for additional
|
|
software queuing. See
|
|
.Xr ifnet 9 .
|
|
The default value is 1024.
|
|
.It Va hw.cxgbe.qsize_rxq
|
|
The size, in number of entries, of the descriptor ring used for an
|
|
rx queue.
|
|
The default value is 1024.
|
|
.El
|
|
.Sh SUPPORT
|
|
For general information and support,
|
|
go to the Chelsio support website at:
|
|
.Pa http://www.chelsio.com/ .
|
|
.Pp
|
|
If an issue is identified with this driver with a supported adapter,
|
|
email all the specific information related to the issue to
|
|
.Aq support@chelsio.com .
|
|
.Sh SEE ALSO
|
|
.Xr altq 4 ,
|
|
.Xr arp 4 ,
|
|
.Xr cxgb 4 ,
|
|
.Xr netintro 4 ,
|
|
.Xr ng_ether 4 ,
|
|
.Xr ifconfig 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
device driver first appeared in
|
|
.Fx 9.0
|
|
.Sh AUTHORS
|
|
.An -nosplit
|
|
The
|
|
.Nm
|
|
driver was written by
|
|
.An Navdeep Parhar Aq np@FreeBSD.org .
|