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Broadcom TG3 drivers and TSO

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Operating Systems Linux Red Hat Broadcom TG3 drivers and TSO
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Old 11-14-2012
Broadcom TG3 drivers and TSO
We recently had some HP DL380 G8 servers delivered and I have installed RHEL 5.6 and 5.8 on them. Both OS use the Tegon3 driver for the BCM 5719 onboard NICs.

Trouble I had was when any command expecting a lot of output ie sysctl -a was run the system hangs up and stops responding to ping for about 5-10 minutes then finally displays the prompt. When attempting to transfer files the system would copy in bytes, not even kilo-byte speeds.

I found that if I disable TSO problem goes away immediately. We have G7 servers also those servers have never had any issue with TSO enabled. They look like they have BCM 5709 Network Cards, but they run the Broadcom Drivers not the Tegon3 driver suite.

When I look on Broadcom's site they list the 2 nics in two different classes:

G8 w/ 5719 NetXtreme I
G7 w/ 5709 NetXtreme II - says to be used as iSCSI HBA

Has anyone had a similar issue, and if so was it resolved by any driver updates, or did you just disable TSO.
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LEARN ABOUT FREEBSD

bcmxcp_usb

BCMXCP_USB(8)							    NUT Manual							     BCMXCP_USB(8)

NAME

       bcmxcp_usb - Experimental driver for UPSes supporting the BCM/XCP protocol over USB

NOTE

       This man page only documents the hardware-specific features of the bcmxcp_usb driver. For information about the core driver, see
       nutupsdrv(8). This driver is a variant of the serial driver bcmxcp and uses the same core code.

SUPPORTED HARDWARE

       This driver should recognize all BCM/XCP-compatible UPSes that are connected via USB. It has been developed and tested on Powerware PW3501
       hardware. It also has been tested on PW5110 hardware.

EXTRA ARGUMENTS

       This driver supports the following optional settings in the ups.conf(5).

       shutdown_delay=delay
	   The number of seconds that the UPS should wait between receiving the shutdown command and actually shutting off.

DEFAULT VALUES FOR THE EXTRA ARGUMENTS

       shutdown_delay =120

INSTANT COMMANDS

       This driver supports the following Instant Commands:

       shutdown.return
	   Turn off the load and return when power is back.

       shutdown.stayoff
	   Turn off the load and remain off.

       test.battery.start
	   Start a battery test.

TODO LIST

       Report UPS alarm status
	   BCM/XCP supports reporting a wide range of UPS alarm conditions.

       Report UPS statistics informations
	   BCM/XCP supports reporting of UPS statistics data.

EXPERIMENTAL DRIVER

       This driver has been tagged experimental, even if it has been reported to be stable. Thus it is not suitable for production systems and it
       is not built by default. This is mainly due to the fact that it is a new driver.

INSTALLATION

       This driver is not built by default. You can build it by using "configure --with-usb=yes". Note that it will also install other USB
       drivers.

       You also need to install manually the hotplug files (libhidups and libhid.usermap), generally in etc/hotplug/usb/, to address the
       permission settings problem. Lastly note that the libhidups file must have execution flag set (ie using chmod +x ...).

IMPLEMENTATION

       bcmxcp_usb only supports 1 UPS at this time. You can put the "auto" value for port in ups.conf, i.e.:

	   [pw3105]
		   driver = bcmxcp_usb
		   port = auto

KNOWN ISSUES AND BUGS

    Got EPERM: Operation not permitted upon driver startup""
       You have forgotten to install the hotplug files, as explained in the INSTALLATION section above. Don't forget to restart hotplug so that it
       applies these changes.

AUTHOR

       Tore Orpetveit <tore@orpetveit.net>, Wolfgang Ocker <weo@weo1.de>

SEE ALSO

   The core driver:
       nutupsdrv(8)

   Internet resources:
       The NUT (Network UPS Tools) home page: http://www.networkupstools.org/

Network UPS Tools						    05/21/2012							     BCMXCP_USB(8)