Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 69 insertions, 0 deletions

diff --git a/kernel/include/net/netfilter/nf_conntrack_acct.h b/kernel/include/net/netfilter/nf_conntrack_acct.h
new file mode 100644
index 000000000..79d8d1673
--- /dev/null
+++ b/kernel/include/net/netfilter/nf_conntrack_acct.h
@@ -0,0 +1,69 @@
+/*
+ * (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.
+ */
+
+#ifndef _NF_CONNTRACK_ACCT_H
+#define _NF_CONNTRACK_ACCT_H
+#include <net/net_namespace.h>
+#include <linux/netfilter/nf_conntrack_common.h>
+#include <linux/netfilter/nf_conntrack_tuple_common.h>
+#include <net/netfilter/nf_conntrack.h>
+#include <net/netfilter/nf_conntrack_extend.h>
+
+struct nf_conn_counter {
+	atomic64_t packets;
+	atomic64_t bytes;
+};
+
+struct nf_conn_acct {
+	struct nf_conn_counter counter[IP_CT_DIR_MAX];
+};
+
+static inline
+struct nf_conn_acct *nf_conn_acct_find(const struct nf_conn *ct)
+{
+	return nf_ct_ext_find(ct, NF_CT_EXT_ACCT);
+}
+
+static inline
+struct nf_conn_acct *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
+{
+	struct net *net = nf_ct_net(ct);
+	struct nf_conn_acct *acct;
+
+	if (!net->ct.sysctl_acct)
+		return NULL;
+
+	acct = nf_ct_ext_add(ct, NF_CT_EXT_ACCT, gfp);
+	if (!acct)
+		pr_debug("failed to add accounting extension area");
+
+
+	return acct;
+};
+
+unsigned int seq_print_acct(struct seq_file *s, const struct nf_conn *ct,
+			    int dir);
+
+/* Check if connection tracking accounting is enabled */
+static inline bool nf_ct_acct_enabled(struct net *net)
+{
+	return net->ct.sysctl_acct != 0;
+}
+
+/* Enable/disable connection tracking accounting */
+static inline void nf_ct_set_acct(struct net *net, bool enable)
+{
+	net->ct.sysctl_acct = enable;
+}
+
+int nf_conntrack_acct_pernet_init(struct net *net);
+void nf_conntrack_acct_pernet_fini(struct net *net);
+
+int nf_conntrack_acct_init(void);
+void nf_conntrack_acct_fini(void);
+#endif /* _NF_CONNTRACK_ACCT_H */