[ofa-general] Re: [PATCH v3 08/13] QLogic VNIC: sysfs interface implementation for the driver
Stephen Hemminger
shemminger at vyatta.com
Thu Jun 5 10:01:03 PDT 2008
On Thu, 05 Jun 2008 09:38:36 -0700
Roland Dreier <rdreier at cisco.com> wrote:
> > That said, given that SRP's been using sysfs since it went in, is there
> > a reason to move to configfs other than it's the new preferred way to do
> > it? Given the desire to not break ABI's -- and IIRC sysfs was declared to
> > be under that unbrella -- wouldn't we have to at least carry both
> > interfaces for a while, assuming we can even get rid of the sysfs one?
>
> Yes, we'd definitely be carrying both interfaces for at least a year.
>
> Looking further into this, I'm not sure it makes much sense either.
> Another problem with configfs is that the lifetime of the object is
> controlled by userspace. So if we lose a connection to a target,
> the object will persist in configfs until userspace notices.
>
> - R.
There is nothing stopping adding a well designed alternate interface.
Either netlink or ioctl's are okay. As long as it is 32/64 bit clean.
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