On Tue, Dec 22, 2020 at 6:49 PM Jakub Kicinski [off-list ref] wrote:

I'm not sure what the story here is but if this change is expected to
get into the networking tree we'll need a fresh posting. This sort of
scissored reply does not get into patchwork.

OK, will resend.  Too bad about patchwork, "git am" drops everything
before scissors lines by default.

It sounds like you're getting tens of those messages a second, we can
remove the message but the device is still generating spurious events,
wasting CPU cycles. Was blocking those events deemed unfeasible?

I certainly don't know enough about the USB CDC class to know why the
spurious messages are showing up or whether they could be suppressed
without a fix in the adapter firmware.  But even ~30 spurious messages
per second doesn't seem so bad for a multi-gig adapter that might be
handling 100,000 or more packets per second.

 - R.