3be4cb0b4a
changes: 01 - Enhanced LRO: LRO feature is extended to support multi-buffer mode. Previously, Ethernet frames received in contiguous buffers were offloaded. Now, frames received in multiple non-contiguous buffers can be offloaded, as well. The driver now supports LRO for jumbo frames. 02 - Locks Optimization: The driver code was re-organized to limit the use of locks. Moreover, lock contention was reduced by replacing wait locks with try locks. 03 - Code Optimization: The driver code was re-factored to eliminate some memcpy operations. Fast path loops were optimized. 04 - Tag Creations: Physical Buffer Tags are now optimized based upon frame size. For better performance, Physical Memory Maps are now re-used. 05 - Configuration: Features such as TSO, LRO, and Interrupt Mode can be configured either at load or at run time. Rx buffer mode (mode 1 or mode 2) can be configured at load time through kenv. 06 - Driver Statistics: Run time statistics are enhanced to provide better visibility into the driver performance. 07 - Bug Fixes: The driver contains fixes for the problems discovered and reported since last submission. 08 - MSI support: Added Message Signaled Interrupt feature which currently uses 1 message. 09 Removed feature: Rx 3 buffer mode feature has been removed. Driver now supports 1, 2 and 5 buffer modes of which 2 and 5 buffer modes can be used for header separation. 10 Compiler warning: Fixed compiler warning when compiled for 32 bit system. 11 Copyright notice: Source files are updated with the proper copyright notice. MFC after: 3 days Submitted by: Alicia Pena <Alicia dot Pena at neterion dot com>, Muhammad Shafiq <Muhammad dot Shafiq at neterion dot com>
97 lines
3.3 KiB
Groff
97 lines
3.3 KiB
Groff
.\" Copyright (c) 2007, Neterion 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
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer as
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.\" the first lines of this file unmodified.
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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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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd October 16, 2007
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.Dt NXGE 4
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.Os
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.Sh NAME
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.Nm nxge
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.Nd "Neterion Xframe 10GbE Server/Storage 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 line in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device nxge"
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.Ed
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.Pp
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Alternatively, 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_nxge_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 provides support for Neterion Xframe-I and Xframe-II adapters.
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The driver supports TCP Segmentation Offload (TSO/LSO),
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Large Receive Offlaod (LRO), Jumbo Frames (5 buffer mode),
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Header Separation (Rx 2 buffer mode), VLAN, and Promiscuous mode.
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.Pp
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For general information and support, please visit the Neterion support page
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.Pa http://www.neterion.com/support/support.html .
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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 transmit and receive Jumbo Frames.
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Xframe adapters support Jumbo Frames up to 9600 bytes.
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.Pp
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.Pp
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For Jumbo frames, the driver will try to allocate physically contiguous buffers. Failures to do so, may degrade the performance. To resolve such problems, please visit
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.Pa http://www.neterion.com
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where additional information and Kernel patch can be found.
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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 Neterion Xframe 10 Gigabit Ethernet adapters listed in
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.Pa http://www.neterion.com/how/pricing.html .
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.Sh SUPPORT
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For troubleshooting tips and FAQs, please visit
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.Pa http://trac.neterion.com/cgi-bin/trac.cgi/wiki/TitleIndex?anonymous .
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.Pp
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For any issues please send an email to
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.Aq support@neterion.com .
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.Sh SEE ALSO
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.Xr arp 4 ,
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.Xr netintro 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 7.0 .
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.Sh AUTHORS
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The
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.Nm
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driver was written by
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.An Neterion
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.Aq support@neterion.com .
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