title: Linux network stack queues
body: <p>I'm debugging some network driver under linux. In some place of this driver there is netif_stop_queue() function. It stops sending packets by kernel to my driver and it's ok. </p>
  
  <p>I wonder how long kernel can queueing those packets until it starts to drop them? Is it the txqueuelen parameter in ifconfig which tell how many packets given interface may queue or there is yet another queue in kernel?</p>