Function prototype or declaration at include/linux/netfilter_ipv4.h, line 9 References: include/linux/netfilter_ipv4.h, line 9 net/ipv4/netfilter.c, line 20 net/ipv4/netfilter.c, line 78 net/ipv4/netfilter.c, line 119 net/ipv4/netfilter/ipt_REJECT.c, line 111 net/ipv4/netfilter/ipt_SYNPROXY.c, line 54 net/ipv4/netfilter/iptable_mangle.c, line 71 net/ipv4/netfilter/iptable_nat.c, line 233 net/ipv4/netfilter/nft_chain_nat_ipv4.c, line 154 net/ipv4/netfilter/nft_chain_route_ipv4.c, line 58 net/netfilter/ipvs/ip_vs_core.c, line 671