+#define PKTSUMNEEDED(skb) \
+ (((struct sk_buff *)(skb))->ip_summed == CHECKSUM_PARTIAL)
+#define PKTSETSUMGOOD(skb, x) \
+ (((struct sk_buff *)(skb))->ip_summed = \
+ ((x) ? CHECKSUM_UNNECESSARY : CHECKSUM_NONE))
+
+/* PKTSETSUMNEEDED and PKTSUMGOOD are not possible because
+ skb->ip_summed is overloaded */
+