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 nf_conntrack_acct_pernet_init(struct net * net)31void nf_conntrack_acct_pernet_init(struct net *net) 32 { 33 net->ct.sysctl_acct = nf_ct_acct; 34 } 35 nf_conntrack_acct_init(void)36int 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 nf_conntrack_acct_fini(void)44void nf_conntrack_acct_fini(void) 45 { 46 nf_ct_extend_unregister(&acct_extend); 47 } 48