Re: [PATCH net-next] net/vxlan: Avoid unaligned access in vxlan_build_skb()

From: Sowmini Varadhan <redacted>
Date: Thu, 22 Sep 2016 17:30:10 -0400

On (09/22/16 01:52), David Miller wrote:

quoted

Alternatively we can do Alexander Duyck's trick, by pushing
the headers into the frag list, forcing a pull and realignment
by the next protocol layer.

What is the "Alexander Duyck trick" (hints about module or commit id,
where this can be found, please)?

Is this basically about, e.g., putting the vxlanhdr in its own
skb_frag_t, or something else?

Yes, and this way skb_header_pointer() is forced to do a memcpy.