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1 | // SPDX-License-Identifier: GPL-2.0-only | |
2 | /* Accouting handling for netfilter. */ | |
3 | ||
4 | /* | |
5 | * (C) 2008 Krzysztof Piotr Oledzki <ole@ans.pl> | |
6 | */ | |
7 | ||
8 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
9 | ||
10 | #include <linux/netfilter.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/moduleparam.h> | |
14 | #include <linux/export.h> | |
15 | ||
16 | #include <net/netfilter/nf_conntrack.h> | |
17 | #include <net/netfilter/nf_conntrack_extend.h> | |
18 | #include <net/netfilter/nf_conntrack_acct.h> | |
19 | ||
20 | static bool nf_ct_acct __read_mostly; | |
21 | ||
22 | module_param_named(acct, nf_ct_acct, bool, 0644); | |
23 | MODULE_PARM_DESC(acct, "Enable connection tracking flow accounting."); | |
24 | ||
25 | static const struct nf_ct_ext_type acct_extend = { | |
26 | .len = sizeof(struct nf_conn_acct), | |
27 | .align = __alignof__(struct nf_conn_acct), | |
28 | .id = NF_CT_EXT_ACCT, | |
29 | }; | |
30 | ||
31 | void nf_conntrack_acct_pernet_init(struct net *net) | |
32 | { | |
33 | net->ct.sysctl_acct = nf_ct_acct; | |
34 | } | |
35 | ||
36 | int nf_conntrack_acct_init(void) | |
37 | { | |
38 | int ret = nf_ct_extend_register(&acct_extend); | |
39 | if (ret < 0) | |
40 | pr_err("Unable to register extension\n"); | |
41 | return ret; | |
42 | } | |
43 | ||
44 | void nf_conntrack_acct_fini(void) | |
45 | { | |
46 | nf_ct_extend_unregister(&acct_extend); | |
47 | } |