1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * (C) 2010 Pablo Neira Ayuso <pablo@netfilter.org> 4 */ 5 6#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 7 8#include <linux/netfilter.h> 9#include <linux/slab.h> 10#include <linux/kernel.h> 11#include <linux/moduleparam.h> 12 13#include <net/netfilter/nf_conntrack.h> 14#include <net/netfilter/nf_conntrack_extend.h> 15#include <net/netfilter/nf_conntrack_timestamp.h> 16 17static bool nf_ct_tstamp __read_mostly; 18 19module_param_named(tstamp, nf_ct_tstamp, bool, 0644); 20MODULE_PARM_DESC(tstamp, "Enable connection tracking flow timestamping."); 21 22static const struct nf_ct_ext_type tstamp_extend = { 23 .len = sizeof(struct nf_conn_tstamp), 24 .align = __alignof__(struct nf_conn_tstamp), 25 .id = NF_CT_EXT_TSTAMP, 26}; 27 28void nf_conntrack_tstamp_pernet_init(struct net *net) 29{ 30 net->ct.sysctl_tstamp = nf_ct_tstamp; 31} 32 33int nf_conntrack_tstamp_init(void) 34{ 35 int ret; 36 ret = nf_ct_extend_register(&tstamp_extend); 37 if (ret < 0) 38 pr_err("Unable to register extension\n"); 39 return ret; 40} 41 42void nf_conntrack_tstamp_fini(void) 43{ 44 nf_ct_extend_unregister(&tstamp_extend); 45} 46