@@ -47,6 +47,7 @@
#include <net/netns/generic.h>
#include <net/rtnetlink.h>
#include <net/gre.h>
+#include <net/gue.h>
#if IS_ENABLED(CONFIG_IPV6)
#include <net/ipv6.h>
@@ -115,6 +116,13 @@ static bool log_ecn_error = true;
module_param(log_ecn_error, bool, 0644);
MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
+#if defined(CONFIG_NET_GUE) || defined(CONFIG_NET_GUE_MODULE)
+static int gre_udp_port = 0;
+module_param(gre_udp_port, int, 0);
+MODULE_PARM_DESC(gre_udp_port, "GRE/UDP port");
+static struct socket *gue_sock = NULL;
+#endif
+
static struct rtnl_link_ops ipgre_link_ops __read_mostly;
static int ipgre_tunnel_init(struct net_device *dev);
@@ -784,6 +792,26 @@ static struct pernet_operations ipgre_tap_net_ops = {
.size = sizeof(struct ip_tunnel_net),
};
+static int open_gre_gue_port(void)
+{
+#if defined(CONFIG_NET_GUE) || defined(CONFIG_NET_GUE_MODULE)
+ if (gre_udp_port)
+ return gue_open_direct_port(gre_udp_port, IPPROTO_GRE,
+ &gue_sock);
+#endif
+ return 0;
+}
+
+static void close_gre_gue_port(void)
+{
+#if defined(CONFIG_NET_GUE) || defined(CONFIG_NET_GUE_MODULE)
+ if (gue_sock) {
+ gue_close_port(gue_sock);
+ gue_sock = NULL;
+ }
+#endif
+}
+
static int __init ipgre_init(void)
{
int err;
@@ -812,8 +840,14 @@ static int __init ipgre_init(void)
if (err < 0)
goto tap_ops_failed;
+ err = open_gre_gue_port();
+ if (err < 0)
+ goto gre_udp_port_failed;
+
return 0;
+gre_udp_port_failed:
+ rtnl_link_unregister(&ipgre_tap_ops);
tap_ops_failed:
rtnl_link_unregister(&ipgre_link_ops);
rtnl_link_failed:
@@ -827,6 +861,7 @@ pnet_tap_faied:
static void __exit ipgre_fini(void)
{
+ close_gre_gue_port();
rtnl_link_unregister(&ipgre_tap_ops);
rtnl_link_unregister(&ipgre_link_ops);
gre_cisco_unregister(&ipgre_protocol);
Adds a module parameter for a GRE/UDP port and opens the GUE UDP port at initialization. Signed-off-by: Tom Herbert <therbert@google.com> --- net/ipv4/ip_gre.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)