sctp_nat_csum 129 net/netfilter/ipvs/ip_vs_proto_sctp.c sctp_nat_csum(skb, sctph, sctphoff); sctp_nat_csum 177 net/netfilter/ipvs/ip_vs_proto_sctp.c sctp_nat_csum(skb, sctph, sctphoff);