On Wed, Jan 08, 2014 at 02:34:31PM +0800, Jason Wang wrote:

On 01/07/2014 01:25 PM, Michael Dalton wrote:

quoted

Add initial support for debugfs to virtio-net. Each virtio-net network
device will have a directory under /virtio-net in debugfs. The
per-network device directory will contain one sub-directory per active,
enabled receive queue. If mergeable receive buffers are enabled, each
receive queue directory will contain a read-only file that returns the
current packet buffer size for the receive queue.

Signed-off-by: Michael Dalton <redacted>

This looks more complicated than expected. How about just adding an
entry in sysfs onto the existed network class device which looks more
simpler?

sysfs is part of userspace ABI, I think that's the main issue: can we
commit to this attribute being there in the future?
If yes we can use sysfs but maybe it seems reasonable to use debugfs for
a while until we are more sure of this.
I don't mind either way.