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FC and FCoE Driver Parameters Reference Table
The FC and FCoE driver parameters determine some aspects of the driver’s behavior. The following
tables list the FC and FCoE driver parameters. Some FC and FCoE driver parameters can be modified
and take effect only on a driver load while others can be modified dynamically and take effect
immediately. The tables also list the default, minimum and maximum values for these parameters.
Table 2: LPFC Static Parameters (Requires a driver reload to change)
Variable
Default
Min.
Max.
Comments
Visible
using
sysfs
lpfc_ack0
0
0=Off
1=On
Uses ACK0 for class 2.
Yes
lpfc_discovery_threads
32
1
64
Specifies the maximum number of
ELS commands that can be
outstanding for a discovery.
No
Note: The discovery_threads
parameter defaults to a value of
64 for private loop topologies
regardless of the configured
value. If there are multiple ports
configured on the host the value
of 64 is only used for those
ports that are connected in a
private loop topology. The
configured value is used for all
other ports.
lpfc_enable_da_id
0
0 = Disabled
(default)
1 = enable – a
DA_ID CT
command is sent to
the fabric when
logging out.
This parameter controls whether the
FC and FCoE driver will issue a
DA_ID CT command to the fabric
when VPorts logout of the fabric.
Yes
lpfc_enable_hba_
heartbeat
1
0 = heartbeat
disabled
1 = heartbeat
enabled
Controls the adapter heartbeat logic in
the FC and FCoE driver. If the
heartbeat is enabled and the
heartbeat logic detects that the
adapter is nonfunctional, the FC and
FCoE driver will shutdown the
adapter.
Yes
lpfc_enable_hba_reset
1
0 = hba reset
disabled
1 = hba reset
enabled
Controls whether hba_resets will be
allowed by the FC and FCoE driver to
pass to the adapter. This is used as a
debugging tool.
Yes
Emulex Drivers for Linux User Manual: Configuration
Page 14