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6–VMware Driver Software
Networking Support
52
83840-546-00 E
Networking Support
This section describes the bnx2x VMware ESXi driver for the QLogic 8400/3400
Series PCIe 10 GbE network adapters.
Driver Parameters
Several optional parameters can be supplied as a command line argument to the
vmkload_mod command. These parameters can also be set with 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 8400/3400 Series 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
8400/3400 Series 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 8400/3400 Series 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.
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