nf_ip_checksum 79 include/linux/netfilter_ipv4.h extern __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook, nf_ip_checksum 201 net/ipv4/netfilter.c return nf_ip_checksum(skb, hook, dataoff, protocol); nf_ip_checksum 221 net/ipv4/netfilter.c .checksum = nf_ip_checksum, nf_ip_checksum 58 net/ipv4/netfilter/ipt_REJECT.c if (nf_ip_checksum(oldskb, hook, ip_hdrlen(oldskb), IPPROTO_TCP)) nf_ip_checksum 192 net/ipv4/netfilter/nf_conntrack_proto_icmp.c nf_ip_checksum(skb, hooknum, dataoff, 0)) { nf_ip_checksum 444 net/ipv4/netfilter/nf_nat_core.c if (nf_ip_checksum(skb, hooknum, hdrlen, 0))