title: How nl80211 library & cfg80211 work?
body: <p>I want to learn about how <code>nl80211</code> and <code>cfg80211</code> works in detail. Function flow, how <code>nl80211</code> interact with network tools like <code>wpa_supplicant</code>, <code>iw</code>. </p>
  
  <p>Plz suggest me some useful links or books to refer.</p>