From: Steffen Klassert <steffen.klass...@secunet.com> Date: Thu, 19 Sep 2019 13:01:25 +0200
> If the packet data of all the fraglist GRO skbs are backed by a > page fragment then we could just do the same by iterating with > skb_walk_frags(). I'm not a driver expert and might be misstaken, > but it looks like that could be done with existing hardware that > supports segmentation offload. Having to add frag list as well as page frag iterating in a driver is quite a bit of logic, and added complexity. If the frag list SKBs are indeed backed by a page, you could just as easily coalesce everything into the page frag array of the first SKB.
