Users Guide

Broadcom DRVLin-UG128-100
12
Emulex Drivers for Linux User Guide
Chapter 3: Configuration
3.1 FC Driver Configuration
This section describes how to configure parameters for the FC driver.
3.1.1 FC Driver Parameters
The FC driver parameters determine some aspects of the driver’s behavior. There are two main types, static and dynamic.
Changes to the static parameters require a driver reload for the changes to take effect. Changes to most dynamic parameters
take effect immediately; some do not take effect until there is a link-down and link-up sequence.
For more information on driver parameters, see Section 3.1.1.1, Static FC Driver Parameters, and Section 3.1.1.2, Dynamic
FC Driver Parameters.
3.1.1.1 Static FC Driver Parameters
Changes to static parameters require a driver reload for the changes to take effect. The following table lists the static FC
driver parameters.
Table 2: Static FC Driver Parameters
Parameter Description
sysfs
Visible
Applicable
Adapters
Activation
lpfc_ack0 When enabled, ACK0 is used for Class 2. The enabled
value is 1.
The disabled value is 0 (default).
Yes LPe12000-series
adapters
Driver reload
lpfc_discovery_threads Specifies the maximum number of ELS commands that
can be outstanding for a discovery.
NOTE: The lpfc_discovery_threads parameter
defaults to a value of 64 for private loop topologies
regardless of the configured value. If multiple ports are
configured on the host, the value of 64 is used only for
those ports that are connected in a private loop topology.
The configured value is used for all other ports.
The minimum value is 1. The maximum value is 64. The
default value is 32.
No All Driver reload
lpfc_enable_bg Enables the BlockGuard (T10-DIF) feature. See
Appendix A for more information about the BlockGuard
feature.
The minimum value is 0 (default). The maximum value is
1.
Yes All Driver reload
lpfc_enable_da_id When enabled, the FC driver issues a DA_ID CT
command to the fabric when vPorts log out of the fabric.
The enabled value is 1 (default). The disabled value is 0.
Yes All Driver reload
lpfc_enable_fc4_type When enabled defines the FC4 types that are supported.
The possible values are:
 1 = Enables just FCP.
 3 = Enables both FCP and NVMe (default).
The default value is 3.
Yes LPe31000-series,
LPe32000-series,
and
LPe35000-series
adapters
Driver reload