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NetXtreme II User Guide
September 2013
Broadcom Corporation
Page 176 Drivers Document INGSRVT78-CDUM100-R
DRIVERS
DOWNLOAD, INSTALL, AND UPDATE DRIVERS
To download, install, or update the VMware ESX/ESXi driver for NetXtreme II 10 GbE network adapters, see http://
www.vmware.com/support.
DRIVER PARAMETERS
Several optional parameters can be supplied as a command line argument to the vmkload_mod command. These
parameters can also be set via the esxcfg-module command. See the man page for more information.
int_mode
The optional parameter int_mode is used to force using an interrupt mode other than MSI-X. By default, the driver will try
to enable MSI-X if it is supported by the kernel. If MSI-X is not attainable, then the driver will try to enable MSI if it is supported
by the kernel. If MSI is not attainable, then the driver will use the legacy INTx mode.
Set the int_mode parameter to 1 as shown below to force using the legacy INTx mode on all NetXtreme II network adapters
in the system.
vmkload_mod bnx2x int_mode=1
Set the int_mode parameter to 2 as shown below to force using MSI mode on all NetXtreme II network adapters in the
system.
vmkload_mod bnx2x int_mode=2
disable_tpa
The optional parameter disable_tpa can be used to disable the Transparent Packet Aggregation (TPA) feature. By default,
the driver will aggregate TCP packets, but if you would like to disable this advanced feature, it can be done.
Set the disable_tpa parameter to 1 as shown below to disable the TPA feature on all NetXtreme II network adapters in the
system.
vmkload_mod bnx2x.ko disable_tpa=1
Use ethtool to disable TPA (LRO) for a specific network adapter.
num_rx_queues
The optional parameter num_rx_queues may be used to set the number of Rx queues on kernels starting from 2.6.24 when
multi_mode is set to 1 and interrupt mode is MSI-X. Number of Rx queues must be equal to or greater than the number of
Tx queues (see num_tx_queues parameter). If the interrupt mode is different than MSI-X (see int_mode parameter), then
then the number of Rx queues will be set to 1, discarding the value of this parameter.
num_tx_queues
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