| /* |
| * (C) 2010 Pablo Neira Ayuso <pablo@netfilter.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation (or any later at your option). |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/netfilter.h> |
| #include <linux/slab.h> |
| #include <linux/kernel.h> |
| #include <linux/moduleparam.h> |
| |
| #include <net/netfilter/nf_conntrack.h> |
| #include <net/netfilter/nf_conntrack_extend.h> |
| #include <net/netfilter/nf_conntrack_timestamp.h> |
| |
| static bool nf_ct_tstamp __read_mostly; |
| |
| module_param_named(tstamp, nf_ct_tstamp, bool, 0644); |
| MODULE_PARM_DESC(tstamp, "Enable connection tracking flow timestamping."); |
| |
| static const struct nf_ct_ext_type tstamp_extend = { |
| .len = sizeof(struct nf_conn_tstamp), |
| .align = __alignof__(struct nf_conn_tstamp), |
| .id = NF_CT_EXT_TSTAMP, |
| }; |
| |
| void nf_conntrack_tstamp_pernet_init(struct net *net) |
| { |
| net->ct.sysctl_tstamp = nf_ct_tstamp; |
| } |
| |
| int nf_conntrack_tstamp_init(void) |
| { |
| int ret; |
| ret = nf_ct_extend_register(&tstamp_extend); |
| if (ret < 0) |
| pr_err("Unable to register extension\n"); |
| return ret; |
| } |
| |
| void nf_conntrack_tstamp_fini(void) |
| { |
| nf_ct_extend_unregister(&tstamp_extend); |
| } |