title: Is there a way to query flow hash in Linux user space?
body: <p>Suppose I'm receiving UDP packets and I want to know what network hash has been computed for that flow.  Is there any way to ask the OS what the hash is for a particular socket/flow?</p>
  <p>Seems like there should be a way to query skb-&gt;hash from userspace but I can't find a way to get that information.</p>