1 files changed, 104 insertions, 0 deletions
diff --git a/net/netfilter/nf_conntrack_acct.c b/net/netfilter/nf_conntrack_acct.c
new file mode 100644
index 000000000000..59bd8b903a19
--- /dev/null
+++ b/net/netfilter/nf_conntrack_acct.c
@@ -0,0 +1,104 @@
+/* Accouting handling for netfilter. */
+
+/*
+ * (C) 2008 Krzysztof Piotr Oledzki <ole@ans.pl>
+ *
+ * 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.
+ */
+
+#include <linux/netfilter.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_acct.h>
+
+#ifdef CONFIG_NF_CT_ACCT
+#define NF_CT_ACCT_DEFAULT 1
+#else
+#define NF_CT_ACCT_DEFAULT 0
+#endif
+
+int nf_ct_acct __read_mostly = NF_CT_ACCT_DEFAULT;
+EXPORT_SYMBOL_GPL(nf_ct_acct);
+
+module_param_named(acct, nf_ct_acct, bool, 0644);
+MODULE_PARM_DESC(acct, "Enable connection tracking flow accounting.");
+
+#ifdef CONFIG_SYSCTL
+static struct ctl_table_header *acct_sysctl_header;
+static struct ctl_table acct_sysctl_table[] = {
+	{
+		.ctl_name	= CTL_UNNUMBERED,
+		.procname	= "nf_conntrack_acct",
+		.data		= &nf_ct_acct,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec,
+	},
+	{}
+};
+#endif /* CONFIG_SYSCTL */
+
+unsigned int
+seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir)
+{
+	struct nf_conn_counter *acct;
+
+	acct = nf_conn_acct_find(ct);
+	if (!acct)
+		return 0;
+
+	return seq_printf(s, "packets=%llu bytes=%llu ",
+			  (unsigned long long)acct[dir].packets,
+			  (unsigned long long)acct[dir].bytes);
+};
+EXPORT_SYMBOL_GPL(seq_print_acct);
+
+static struct nf_ct_ext_type acct_extend __read_mostly = {
+	.len	= sizeof(struct nf_conn_counter[IP_CT_DIR_MAX]),
+	.align	= __alignof__(struct nf_conn_counter[IP_CT_DIR_MAX]),
+	.id	= NF_CT_EXT_ACCT,
+};
+
+int nf_conntrack_acct_init(void)
+{
+	int ret;
+
+#ifdef CONFIG_NF_CT_ACCT
+	printk(KERN_WARNING "CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Plase use\n");
+	printk(KERN_WARNING "nf_conntrack.acct=1 kernel paramater, acct=1 nf_conntrack module option or\n");
+	printk(KERN_WARNING "sysctl net.netfilter.nf_conntrack_acct=1 to enable it.\n");
+#endif
+
+	ret = nf_ct_extend_register(&acct_extend);
+	if (ret < 0) {
+		printk(KERN_ERR "nf_conntrack_acct: Unable to register extension\n");
+		return ret;
+	}
+
+#ifdef CONFIG_SYSCTL
+	acct_sysctl_header = register_sysctl_paths(nf_net_netfilter_sysctl_path,
+				acct_sysctl_table);
+
+	if (!acct_sysctl_header) {
+		nf_ct_extend_unregister(&acct_extend);
+
+		printk(KERN_ERR "nf_conntrack_acct: can't register to sysctl.\n");
+		return -ENOMEM;
+	}
+#endif
+
+	return 0;
+}
+
+void nf_conntrack_acct_fini(void)
+{
+#ifdef CONFIG_SYSCTL
+	unregister_sysctl_table(acct_sysctl_header);
+#endif
+	nf_ct_extend_unregister(&acct_extend);
+}