[source] mbim: add metric, defaultroute and peerdns options for mbim protocol

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/35129469ca7dd06d092f54971c5861fd549b4660

commit 35129469ca7dd06d092f54971c5861fd549b4660
Author: Marcin Jurkowski <marcin1j at gmail.com>
AuthorDate: Mon Oct 17 02:46:29 2016 +0200

    mbim: add metric, defaultroute and peerdns options for mbim protocol
    
    Adds generic network options for mbim protocol dynamic interfaces
    as suggested by Felix in
    https://lists.openwrt.org/pipermail/openwrt-devel/2016-February/039794.html.
    
    This depends on netifd patch https://patchwork.ozlabs.org/patch/686820/.
    
    Signed-off-by: Marcin Jurkowski <marcin1j at gmail.com>
---
 package/network/utils/umbim/files/lib/netifd/proto/mbim.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh b/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh
index f8b2c06..9b5729a 100755
--- a/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh
+++ b/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh
@@ -17,6 +17,7 @@ proto_mbim_init_config() {
 	proto_config_add_string auth
 	proto_config_add_string username
 	proto_config_add_string password
+	proto_config_add_defaults
 }
 
 _proto_mbim_setup() {
@@ -24,8 +25,8 @@ _proto_mbim_setup() {
 	local tid=2
 	local ret
 
-	local device apn pincode delay
-	json_get_vars device apn pincode delay auth username password
+	local device apn pincode delay $PROTO_DEFAULT_OPTIONS
+	json_get_vars device apn pincode delay auth username password $PROTO_DEFAULT_OPTIONS
 
 	[ -n "$ctl_device" ] && device=$ctl_device
 
@@ -130,6 +131,7 @@ _proto_mbim_setup() {
 	json_add_string name "${interface}_4"
 	json_add_string ifname "@$interface"
 	json_add_string proto "dhcp"
+	proto_add_dynamic_defaults
 	json_close_object
 	ubus call network add_dynamic "$(json_dump)"
 
@@ -138,6 +140,7 @@ _proto_mbim_setup() {
 	json_add_string ifname "@$interface"
 	json_add_string proto "dhcpv6"
 	json_add_string extendprefix 1
+	proto_add_dynamic_defaults
 	ubus call network add_dynamic "$(json_dump)"
 }