7–VMware Driver Software
Driver Parameters
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dropless_fc
The
dropless_fc
parameter is set to
1
(by default) to enable a
complementary flow control mechanism on 8400/3400 Series Adapters. The
normal flow control mechanism is to send pause frames when the on-chip buffer
(BRB) is reaching a specific level of occupancy, which is a performance-targeted
flow control mechanism. On 8400/3400 Series Adapters, you can enable a
complementary flow control mechanism to send pause frames when one or more
of the host receive buffers are exhausted.
dropless_fc
is a “zero packet drop” targeted flow control mechanism.
Set the
dropless_fc
parameter to
1
to enable the drop-less flow control
mechanism feature on all 8400/3400 Series Adapters in the system.
vmkload_mod bnx2x dropless_fc=1
multi_rx_filters
The
multi_rx_filters
parameter defines the number of receive filters per
NetQueue. Set to
–1
to use the default number of receive filters based on
availability. Set to
0
to disable use of multiple receive filters. Set to a value in the
range of
1, 2, 3,
and so on to force the number of receive filters used for
NetQueue. The default is
–1
.
num_rx_queues
Use the optional parameter
num_rx_queues
to set the quantity of RX queues
on kernels starting from 2.6.24 when
multi_mode
is set to
1
and the interrupt
mode is MSI-X. The quantity of RX queues must be equal to or greater than the
quantity of TX queues (see
parameter). If the interrupt mode is
different than MSI-X (see
parameter), the quantity of RX queues is set
to
1
, discarding the value of this parameter.
num_tx_queues
Use the optional parameter
num_tx_queues
to set the quantity of TX queues
on kernels starting from 2.6.27 when
multi_mode
is set to
1
and interrupt
mode is MSI-X. The quantity of RX queues must be equal to or greater than the
quantity of TX queues (see
parameter). If the interrupt mode is
different than MSI-X (see
parameter), the quantity of TX queues is set
to
1
, discarding the value of this parameter.
pri_map
Use the optional parameter
pri_map
to map the VLAN PRI value or the IP
DSCP value to a different or the same CoS in the hardware. This 32-bit parameter
is evaluated by the driver as 8 values of 4 bits each. Each nibble sets the
hardware queue number for that priority.
