if (!skb_make_writable(pskb, (*pskb)->len))
return NF_DROP;
- if ((*pskb)->ip_summed == CHECKSUM_HW &&
- skb_checksum_help(*pskb, out == NULL))
+ if (((*pskb)->ip_summed == CHECKSUM_PARTIAL ||
+ (*pskb)->ip_summed == CHECKSUM_COMPLETE) &&
+ skb_checksum_help(*pskb))
return NF_DROP;
iph = (*pskb)->nh.iph;