netifd: Apply tunnel MTU

Tunnel MTU is applied according to the tunnel MTU UCI parameter

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

4 files changed, 37 insertions, 10 deletions

diff --git a/system-linux.c b/system-linux.c
index d01d7e3..58210a6 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -1435,8 +1435,11 @@ int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
 	str = blobmsg_data(cur);
 
 	unsigned int ttl = 0;
-	if ((cur = tb[TUNNEL_ATTR_TTL]) && (ttl = blobmsg_get_u32(cur)) > 255)
-		return -EINVAL;
+	if ((cur = tb[TUNNEL_ATTR_TTL])) {
+		ttl = blobmsg_get_u32(cur);
+		if (ttl > 255)
+			return -EINVAL;
+	}
 
 	unsigned int link = 0;
 	if ((cur = tb[TUNNEL_ATTR_LINK])) {
diff --git a/system.c b/system.c
index 8e866da..1452f05 100644
--- a/system.c
+++ b/system.c
@@ -16,13 +16,14 @@
 #include <fcntl.h>
 
 static const struct blobmsg_policy tunnel_attrs[__TUNNEL_ATTR_MAX] = {
-	[TUNNEL_ATTR_TYPE] = { "mode", BLOBMSG_TYPE_STRING },
-	[TUNNEL_ATTR_LOCAL] = { "local", BLOBMSG_TYPE_STRING },
-	[TUNNEL_ATTR_REMOTE] = { "remote", BLOBMSG_TYPE_STRING },
-	[TUNNEL_ATTR_TTL] = { "ttl", BLOBMSG_TYPE_INT32 },
-	[TUNNEL_ATTR_6RD_PREFIX] = { "6rd-prefix", BLOBMSG_TYPE_STRING },
-	[TUNNEL_ATTR_6RD_RELAY_PREFIX] = { "6rd-relay-prefix", BLOBMSG_TYPE_STRING },
-	[TUNNEL_ATTR_LINK] = { "link", BLOBMSG_TYPE_STRING },
+	[TUNNEL_ATTR_TYPE] = { .name = "mode", .type = BLOBMSG_TYPE_STRING },
+	[TUNNEL_ATTR_LOCAL] = { .name = "local", .type = BLOBMSG_TYPE_STRING },
+	[TUNNEL_ATTR_REMOTE] = { .name = "remote", .type = BLOBMSG_TYPE_STRING },
+	[TUNNEL_ATTR_MTU] = { .name = "mtu", .type = BLOBMSG_TYPE_INT32 },
+	[TUNNEL_ATTR_TTL] = { .name = "ttl", .type = BLOBMSG_TYPE_INT32 },
+	[TUNNEL_ATTR_6RD_PREFIX] = {.name =  "6rd-prefix", .type = BLOBMSG_TYPE_STRING },
+	[TUNNEL_ATTR_6RD_RELAY_PREFIX] = { .name = "6rd-relay-prefix", .type = BLOBMSG_TYPE_STRING },
+	[TUNNEL_ATTR_LINK] = { .name = "link", .type = BLOBMSG_TYPE_STRING },
 };
 
 const struct uci_blob_param_list tunnel_attr_list = {
diff --git a/system.h b/system.h
index ad74156..e1d35c9 100644
--- a/system.h
+++ b/system.h
@@ -25,6 +25,7 @@ enum tunnel_param {
 	TUNNEL_ATTR_TYPE,
 	TUNNEL_ATTR_REMOTE,
 	TUNNEL_ATTR_LOCAL,
+	TUNNEL_ATTR_MTU,
 	TUNNEL_ATTR_TTL,
 	TUNNEL_ATTR_6RD_PREFIX,
 	TUNNEL_ATTR_6RD_RELAY_PREFIX,
diff --git a/tunnel.c b/tunnel.c
index 3ef5086..aa60019 100644
--- a/tunnel.c
+++ b/tunnel.c
@@ -40,6 +40,27 @@ tunnel_set_state(struct device *dev, bool up)
 	return ret;
 }
 
+static enum dev_change_type
+tunnel_reload(struct device *dev, struct blob_attr *attr)
+{
+	struct blob_attr *tb_dev[__DEV_ATTR_MAX];
+	const struct uci_blob_param_list *cfg = dev->type->config_params;
+
+	if (uci_blob_check_equal(dev->config, attr, cfg))
+		return DEV_CONFIG_NO_CHANGE;
+
+	if (attr) {
+		memset(tb_dev, 0, sizeof(tb_dev));
+
+		blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
+			blob_data(attr), blob_len(attr));
+	}
+
+	device_init_settings(dev, tb_dev);
+
+	return DEV_CONFIG_RESTART;
+}
+
 static struct device *
 tunnel_create(const char *name, struct blob_attr *attr)
 {
@@ -51,6 +72,7 @@ tunnel_create(const char *name, struct blob_attr *attr)
 	device_init(dev, &tunnel_device_type, name);
 	tun->set_state = dev->set_state;
 	dev->set_state = tunnel_set_state;
+	device_set_config(dev, &tunnel_device_type, attr);
 	device_set_present(dev, true);
 
 	return dev;
@@ -67,7 +89,7 @@ tunnel_free(struct device *dev)
 const struct device_type tunnel_device_type = {
 	.name = "IP tunnel",
 	.config_params = &tunnel_attr_list,
-
+	.reload = tunnel_reload,
 	.create = tunnel_create,
 	.free = tunnel_free,
 };