
static void __netif_receive_skb_list_core(struct list_head *head, bool pfmemalloc)
{
	/* Fast-path assumptions:
	 * - There is no RX handler.
	 * - Only one packet_type matches.
	 * If either of these fails, we will end up doing some per-packet
	 * processing in-line, then handling the 'last ptype' for the whole
	 * sublist.  This can't cause out-of-order delivery to any single ptype,
	 * because the 'last ptype' must be constant across the sublist, and all
	 * other ptypes are handled per-packet.
	 */
	/* Current (common) ptype of sublist */
	struct packet_type *pt_curr = NULL;
	/* Current (common) orig_dev of sublist */
	struct net_device *od_curr = NULL;
	struct list_head sublist;
	struct sk_buff *skb, *next;

	INIT_LIST_HEAD(&sublist);
	list_for_each_entry_safe(skb, next, head, list) {
		struct net_device *orig_dev = skb->dev;
		struct packet_type *pt_prev = NULL;

		skb_list_del_init(skb);
		__netif_receive_skb_core(skb, pfmemalloc, &pt_prev);
		if (!pt_prev)
			continue;
		if (pt_curr != pt_prev || od_curr != orig_dev) {
			/* dispatch old sublist */
			__netif_receive_skb_list_ptype(&sublist, pt_curr, od_curr);
			/* start new sublist */
			INIT_LIST_HEAD(&sublist);
			pt_curr = pt_prev;
			od_curr = orig_dev;
		}
		list_add_tail(&skb->list, &sublist);
	}

	/* dispatch final sublist */
	__netif_receive_skb_list_ptype(&sublist, pt_curr, od_curr);
Unknown