Reading the current monitor flags of an interface

[Roger James <roger@beardandsandals.co.uk>]

Hi,

I am trying to get at the current monitor flags setting of a wireless 
monitor mode virtual interface. I have tried to do this by hacking the 
iw source. However I never see a NL80211_ATTR_MNTR_FLAGS attribute 
returned in response to the

TOPLEVEL(info, NULL, NL80211_CMD_GET_INTERFACE, 0, CIB_NETDEV, 
handle_interface_info,
      "Show information for this interface.");

command in iw's interface.c code.

Questions.

1. Am I wasting my time? (e.g. the rt2800usb driver never returns this 
info, or there is another easy way of viewing this info, etc)

2. Am I doing something stupid? (e.g. I need to specify some additional 
flags to the get command.)

3. Has anybody else tried this before?

All help will be gratefully received.

Roger