On Mon, Jan 19, 2009 at 11:10 AM, Paul Durrant <[email protected]> wrote:
> Andrew Gallatin wrote:
>> FWIW, unplub/plumb is still not much better than the current situation
>> of removing/adding the driver.  Every other OS lets you change these
>> settings on the fly, potentially without even taking the NIC down.
>> (assuming the NIC hardware doesn't require a reset; and even if it
>> does, that reset happens without administrator intervention).
>>
>> I think there needs to be a m_setcapap() or something similar
>> to notify drivers of what capabilities are enabled.
>>
>
> That wouldn't be necessary; the m_setprop() entry point could be used to
> turn on LSO in the driver. There just needs to be a way of getting the
> stack to notice - as with an MTU change.

Thinking about this some more, I'm wondering if this might be more
appropriate for the ipadm command that's being tossed around.  It
could use m_getcapab() to query the link to see if it's supported,
then if just needs a way to tell the link to turn it off or on.
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