Re: bpf_mtap_softint

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

On Wed, Jan 18, 2017 at 6:25 PM, Martin Husemann <martin%duskware.de@localhost> wrote:
> On Wed, Jan 18, 2017 at 04:48:32PM +0900, Ryota Ozaki wrote:
>> Note that it of course consumes more CPU time for softint
>> and more memory for m_dup. That said, I think that this is
>> a suitable workaround for now until someone makes them
>> softint-based.
>
> Could you provide some TODO like document (e.g. on the wiki) where
> the poor soul wading into ISDN drivers (i.e.) could find out what
> exactly needs to be done to the drivers? (Even if this is just two
> or three sentences, it should be spelled out explicitly.)

I added doc/TODO.smpnet for it. It will include TODOs of MP-safe
network stack.

Updated the patch: http://www.netbsd.org/~ozaki-r/bpf_mtap_softint.diff

>
> Did I understand correctly that you will add the defered mtap to all
> drivers for now, and after the driver has been fixed it will return to
> old bpf_mtap?

Yes.

> So if we ask nxr for users of the defered tap and find none,
> we know that the task is done?

Yes, we can know it by searching bpf_mtap_softint.

  ozaki-r