option directive and turning on AOE

[Julian Elischer]

Brooks Davis wrote:

>On Tue, Aug 31, 2004 at 02:27:33PM -0600, Scott Long wrote:
>  
>
>>Sam wrote:
>>
>>    
>>
>>>I've added code to if_ethersubr.c:/ether_demux/
>>>to queue up AoE frames as they appear.  I followed
>>>suit with other protocols and included my addition
>>>inside of an #ifdef AOE.  Where do I turn this on?
>>>I thought perhaps just adding an 'option AOE' to
>>>the config would do it, but it doesn't -- so clearly
>>>I don't understand how the option directive works.
>>>The config man page doesn't talk about option/device
>>>directives ...
>>>
>>>I'm still looking, but a clue would be well received.
>>>      
>>>
>>Did you modify /sys/conf/options to tell it about your
>>AOE option?  If so, then you should have specified the name
>>of a header file that the option would be #define'd into.
>>Include that header file in if_ethersubr.c and you should
>>have no problems.
>>
>>Incidentally, this might be an area when netgraph would be
>>useful.  Instead of having an AoE specific hook in the
>>stack, you could have an AoE netgraph module that uses the
>>existing netgraph hooks.  It's just an idea, though.
>>    
>>
>
>Another option might be a PFIL hook.  There isn't one there now, but I
>think I've seen talk of adding one.  Actually, if we did that, we could
>get most of the netgraph specific hooks out of the ethernet code.
>

or visa versa..
make pfil have a netgraph hook. then you could use it to filter all 
kinds of things in netgraph graphs.

:-)

>
>-- Brooks
>
>  
>