title: tcpdump catching mac and rssi in linux
body: <p>I'm trying to use a wlan adapter (TP-link TL-WN722N) in monitor mode to pick up RSS from signals in the environment (both beacons and clients). What I would like to do is to get the MAC address and RSS value into my own code somehow (preferably python). I'm planning to use these values for a rough estimate of locations of nearby devices.</p>
  
  <p>I've looked into scapy, but it does not seem to provide RSS values. </p>
  
  <p>tcpdump seems to be able to get both values, but I have been unable to catch client devices. 
  Is it possible? 
  If so can I filter MAC and RSS somehow?</p>