[NETFILTER]: nf_conntrack: sysctl compatibility with old connection tracking

This patch adds an option to keep the connection tracking sysctls visible
under their old names.

Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 107 insertions, 0 deletions

diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 6f6f9a061e76..d99c7c4176d4 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -1273,6 +1273,110 @@ static struct ctl_table tcp_sysctl_table[] = {
 		.ctl_name	= 0
 	}
 };
+
+#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
+static struct ctl_table tcp_compat_sysctl_table[] = {
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT,
+		.procname	= "ip_conntrack_tcp_timeout_syn_sent",
+		.data		= &nf_ct_tcp_timeout_syn_sent,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_jiffies,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV,
+		.procname	= "ip_conntrack_tcp_timeout_syn_recv",
+		.data		= &nf_ct_tcp_timeout_syn_recv,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_jiffies,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED,
+		.procname	= "ip_conntrack_tcp_timeout_established",
+		.data		= &nf_ct_tcp_timeout_established,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_jiffies,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT,
+		.procname	= "ip_conntrack_tcp_timeout_fin_wait",
+		.data		= &nf_ct_tcp_timeout_fin_wait,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_jiffies,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT,
+		.procname	= "ip_conntrack_tcp_timeout_close_wait",
+		.data		= &nf_ct_tcp_timeout_close_wait,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_jiffies,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK,
+		.procname	= "ip_conntrack_tcp_timeout_last_ack",
+		.data		= &nf_ct_tcp_timeout_last_ack,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_jiffies,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT,
+		.procname	= "ip_conntrack_tcp_timeout_time_wait",
+		.data		= &nf_ct_tcp_timeout_time_wait,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_jiffies,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE,
+		.procname	= "ip_conntrack_tcp_timeout_close",
+		.data		= &nf_ct_tcp_timeout_close,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_jiffies,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS,
+		.procname	= "ip_conntrack_tcp_timeout_max_retrans",
+		.data		= &nf_ct_tcp_timeout_max_retrans,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec_jiffies,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_LOOSE,
+		.procname	= "ip_conntrack_tcp_loose",
+		.data		= &nf_ct_tcp_loose,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL,
+		.procname	= "ip_conntrack_tcp_be_liberal",
+		.data		= &nf_ct_tcp_be_liberal,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.ctl_name	= NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS,
+		.procname	= "ip_conntrack_tcp_max_retrans",
+		.data		= &nf_ct_tcp_max_retrans,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0644,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.ctl_name	= 0
+	}
+};
+#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
 #endif /* CONFIG_SYSCTL */
 
 struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 =
@@ -1298,6 +1402,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 =
 	.ctl_table_users	= &tcp_sysctl_table_users,
 	.ctl_table_header	= &tcp_sysctl_header,
 	.ctl_table		= tcp_sysctl_table,
+#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
+	.ctl_compat_table	= tcp_compat_sysctl_table,
+#endif
 #endif
 };