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doc: add cmd line param section to modules.rst

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Signed-off-by: Emanuele Di Pascale <emanuele@voltanet.io>
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Emanuele Di Pascale 2018-07-19 18:28:25 +02:00
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doc/developer/modules.rst
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@ -100,6 +100,15 @@ a function that removes all of a module's installed hooks.
There's also the ``frr_module`` symbol in modules, pretty much a There's also the ``frr_module`` symbol in modules, pretty much a
standard entry point for loadable modules. standard entry point for loadable modules.
Command line parameters
-----------------------
Command line parameters can be passed directly to a module by appending a
colon to the module name when loading it, e.g. ``-M mymodule:myparameter``.
The text after the colon will be accessible in the module's code through
``THIS_MODULE->load_args``. For example, see how the format parameter is
configured in the ``zfpm_init()`` function inside ``zebra_fpm.c``.
Hooks Hooks
----- -----