oldtos 31 net/ipv4/netfilter/ipt_ECN.c __u8 oldtos; oldtos 35 net/ipv4/netfilter/ipt_ECN.c oldtos = iph->tos; oldtos 38 net/ipv4/netfilter/ipt_ECN.c csum_replace2(&iph->check, htons(oldtos), htons(iph->tos));