nf_icmp_pernet
struct nf_icmp_net *in = nf_icmp_pernet(net);
struct nf_icmp_net *in = nf_icmp_pernet(net);
timeout = &nf_icmp_pernet(nf_ct_net(ct))->timeout;
table[NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP].data = &nf_icmp_pernet(net)->timeout;
timeouts = &nf_icmp_pernet(info->net)->timeout;