From 1c7bff698eb7adbe239ccf400345cfda3d466f39 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Thu, 15 Mar 2012 00:09:43 +0100
Subject: [PATCH] parse tunnel devices from config

---
 CMakeLists.txt |  2 +-
 config.c       | 13 +++++++---
 device.h       |  1 +
 tunnel.c       | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 77 insertions(+), 5 deletions(-)
 create mode 100644 tunnel.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2062d3b..7a97aa6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,7 +11,7 @@ IF(APPLE)
 ENDIF()
 
 SET(SOURCES
-	main.c utils.c system.c
+	main.c utils.c system.c tunnel.c
 	interface.c interface-ip.c interface-event.c
 	proto.c proto-static.c proto-shell.c
 	config.c device.c bridge.c vlan.c ubus.c)
diff --git a/config.c b/config.c
index ba97a5c..d134a90 100644
--- a/config.c
+++ b/config.c
@@ -215,7 +215,7 @@ config_init_devices(void)
 
 	uci_foreach_element(&uci_network->sections, e) {
 		struct uci_section *s = uci_to_section(e);
-		const struct device_type *devtype;
+		const struct device_type *devtype = NULL;
 		const char *type, *name;
 
 		if (strcmp(s->type, "device") != 0)
@@ -226,9 +226,14 @@ config_init_devices(void)
 			continue;
 
 		type = uci_lookup_option_string(uci_ctx, s, "type");
-		if (type && !strcmp(type, "bridge"))
-			devtype = &bridge_device_type;
-		else
+		if (type) {
+			if (!strcmp(type, "bridge"))
+				devtype = &bridge_device_type;
+			else if (!strcmp(type, "tunnel"))
+				devtype = &tunnel_device_type;
+		}
+
+		if (!devtype)
 			devtype = &simple_device_type;
 
 		blob_buf_init(&b, 0);
diff --git a/device.h b/device.h
index 17676b8..7454d54 100644
--- a/device.h
+++ b/device.h
@@ -126,6 +126,7 @@ struct device_hotplug_ops {
 extern const struct config_param_list device_attr_list;
 extern const struct device_type simple_device_type;
 extern const struct device_type bridge_device_type;
+extern const struct device_type tunnel_device_type;
 
 void device_lock(void);
 void device_unlock(void);
diff --git a/tunnel.c b/tunnel.c
new file mode 100644
index 0000000..e756973
--- /dev/null
+++ b/tunnel.c
@@ -0,0 +1,66 @@
+#include "netifd.h"
+#include "device.h"
+#include "config.h"
+#include "system.h"
+
+struct tunnel {
+	struct device dev;
+	device_state_cb set_state;
+	struct blob_attr *config;
+};
+
+static int
+tunnel_set_state(struct device *dev, bool up)
+{
+	struct tunnel *tun = container_of(dev, struct tunnel, dev);
+	int ret;
+
+	if (up) {
+		ret = system_add_ip_tunnel(dev->ifname, tun->config);
+		if (ret != 0) {
+			perror("add_ip_tunnel");
+			return ret;
+		}
+	}
+
+	ret = tun->set_state(dev, up);
+	if (ret || !up)
+		system_del_ip_tunnel(dev->ifname);
+
+	return ret;
+}
+
+static struct device *
+tunnel_create(const char *name, struct blob_attr *attr)
+{
+	struct tunnel *tun;
+	struct device *dev;
+
+	tun = calloc(1, sizeof(*tun));
+	dev = &tun->dev;
+	tun->config = config_memdup(attr);
+	device_init(dev, &tunnel_device_type, name);
+	tun->set_state = dev->set_state;
+	dev->set_state = tunnel_set_state;
+	device_set_present(dev, true);
+
+	return dev;
+}
+
+static void
+tunnel_free(struct device *dev)
+{
+	struct tunnel *tun = container_of(dev, struct tunnel, dev);
+
+	free(tun);
+}
+
+const struct device_type tunnel_device_type = {
+	.name = "IP tunnel",
+	.config_params = &tunnel_attr_list,
+
+	.create = tunnel_create,
+	.free = tunnel_free,
+};
+
+
-- 
2.25.1