BCM-OpenNSL-API-Guide-and-Reference-Manual
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OpenNSL API Guide and Reference Manual
Customizing OpenNSL Platform
Overview
OpenNSL provides a mechanism to customize the switch initialization, by accepting a set
of properties through a configuration file. The properties are mainly used to customize the
platform without having to re-compile the OpenNSL.
It also provides a mechanism to customize the platform, by accepting a set of diagnostic
commands through a file, that are applied after system initialization.
Platform customization using
config file
OpenNSL is enhanced to accept the platform configuration from a file. During initialization,
OpenNSL checks for the presence of configuration file. If the file exists, the configuration
from the file is applied. Note that OpenNSL does not validate the property values specified
in the file. For properties with invalid values, the default value would be assumed.
Run-time modifications to the configuration file do not take effect until OpenNSL is
re-initialized.
The configuration file is retrieved in the following order:
� The config file is specified via environment variable OPENNSL_CONFIG_FILE.
This option is given the highest precedence so that configuration files can be
changed without recompiling code.
# export OPENNSL_CONFIG_FILE=/home/admin/opennsl.cfg
� The config file is specified as an input parameter to the opennsl_driver_init()
function. rv = opennsl_driver_init(params);
� The location '/etc/opennsl' is checked for presence of 'opennsl.cfg' file.
� If the config file is not specified or does not exist, OpenNSL applies the default
configuration for the given platform.
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