1 files changed, 79 insertions, 0 deletions
diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
new file mode 100644
index 000000000..e831637bc
--- /dev/null
+++ b/net/netfilter/nf_conntrack_proto_generic.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* (C) 1999-2001 Paul `Rusty' Russell
+ * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
+ */
+
+#include <linux/types.h>
+#include <linux/jiffies.h>
+#include <linux/timer.h>
+#include <linux/netfilter.h>
+#include <net/netfilter/nf_conntrack_l4proto.h>
+#include <net/netfilter/nf_conntrack_timeout.h>
+
+static const unsigned int nf_ct_generic_timeout = 600*HZ;
+
+#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
+
+#include <linux/netfilter/nfnetlink.h>
+#include <linux/netfilter/nfnetlink_cttimeout.h>
+
+static int generic_timeout_nlattr_to_obj(struct nlattr *tb[],
+					 struct net *net, void *data)
+{
+	struct nf_generic_net *gn = nf_generic_pernet(net);
+	unsigned int *timeout = data;
+
+	if (!timeout)
+		timeout = &gn->timeout;
+
+	if (tb[CTA_TIMEOUT_GENERIC_TIMEOUT])
+		*timeout =
+		    ntohl(nla_get_be32(tb[CTA_TIMEOUT_GENERIC_TIMEOUT])) * HZ;
+	else {
+		/* Set default generic timeout. */
+		*timeout = gn->timeout;
+	}
+
+	return 0;
+}
+
+static int
+generic_timeout_obj_to_nlattr(struct sk_buff *skb, const void *data)
+{
+	const unsigned int *timeout = data;
+
+	if (nla_put_be32(skb, CTA_TIMEOUT_GENERIC_TIMEOUT, htonl(*timeout / HZ)))
+		goto nla_put_failure;
+
+	return 0;
+
+nla_put_failure:
+        return -ENOSPC;
+}
+
+static const struct nla_policy
+generic_timeout_nla_policy[CTA_TIMEOUT_GENERIC_MAX+1] = {
+	[CTA_TIMEOUT_GENERIC_TIMEOUT]	= { .type = NLA_U32 },
+};
+#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
+
+void nf_conntrack_generic_init_net(struct net *net)
+{
+	struct nf_generic_net *gn = nf_generic_pernet(net);
+
+	gn->timeout = nf_ct_generic_timeout;
+}
+
+const struct nf_conntrack_l4proto nf_conntrack_l4proto_generic =
+{
+	.l4proto		= 255,
+#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
+	.ctnl_timeout		= {
+		.nlattr_to_obj	= generic_timeout_nlattr_to_obj,
+		.obj_to_nlattr	= generic_timeout_obj_to_nlattr,
+		.nlattr_max	= CTA_TIMEOUT_GENERIC_MAX,
+		.obj_size	= sizeof(unsigned int),
+		.nla_policy	= generic_timeout_nla_policy,
+	},
+#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
+};