2 * (C) 2010 Pablo Neira Ayuso <pablo@netfilter.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation (or any later at your option).
9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11 #include <linux/netfilter.h>
12 #include <linux/slab.h>
13 #include <linux/kernel.h>
14 #include <linux/moduleparam.h>
16 #include <net/netfilter/nf_conntrack.h>
17 #include <net/netfilter/nf_conntrack_extend.h>
18 #include <net/netfilter/nf_conntrack_timestamp.h>
20 static bool nf_ct_tstamp __read_mostly;
22 module_param_named(tstamp, nf_ct_tstamp, bool, 0644);
23 MODULE_PARM_DESC(tstamp, "Enable connection tracking flow timestamping.");
25 static const struct nf_ct_ext_type tstamp_extend = {
26 .len = sizeof(struct nf_conn_tstamp),
27 .align = __alignof__(struct nf_conn_tstamp),
28 .id = NF_CT_EXT_TSTAMP,
31 int nf_conntrack_tstamp_pernet_init(struct net *net)
33 net->ct.sysctl_tstamp = nf_ct_tstamp;
37 void nf_conntrack_tstamp_pernet_fini(struct net *net)
41 int nf_conntrack_tstamp_init(void)
44 ret = nf_ct_extend_register(&tstamp_extend);
46 pr_err("Unable to register extension\n");
50 void nf_conntrack_tstamp_fini(void)
52 nf_ct_extend_unregister(&tstamp_extend);