nf_flow_state_check 273 net/netfilter/nf_flow_table_ip.c if (nf_flow_state_check(flow, ip_hdr(skb)->protocol, skb, thoff)) nf_flow_state_check 499 net/netfilter/nf_flow_table_ip.c if (nf_flow_state_check(flow, ipv6_hdr(skb)->nexthdr, skb,