From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Wed, 27 Nov 2019 12:26:43 +0100

+	do {
+		next = skb->next;

I've been trying desperately to remove all direct references to the SKB list
implementation details so that we can convert it over to list_head.  This
means no direct references to skb->next nor skb->prev.

Please rearrange this using appropriate helpers and abstractions from skbuff.h