ncm: add sourcefilter option support

This make source based IPv6 routing option available for ncm

Signed-off-by: Chen Minqiang <[email protected]>

package/network/utils/comgt/files/ncm.sh

@@ -19,6 +19,7 @@ proto_ncm_init_config() {
 	proto_config_add_string delay
 	proto_config_add_string mode
 	proto_config_add_string pdptype
+	proto_config_add_boolean sourcefilter
 	proto_config_add_int profile
 	proto_config_add_defaults
 }
@@ -29,7 +30,7 @@ proto_ncm_setup() {
 	local manufacturer initialize setmode connect finalize devname devpath ifpath
 
 	local device ifname  apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
-	json_get_vars device ifname apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
+	json_get_vars device ifname apn auth username password pincode delay mode pdptype sourcefilter profile $PROTO_DEFAULT_OPTIONS
 
 	local context_type
 
@@ -202,6 +203,7 @@ proto_ncm_setup() {
 		json_add_string ifname "@$interface"
 		json_add_string proto "dhcpv6"
 		json_add_string extendprefix 1
+		[ "$sourcefilter" = "0" ] && json_add_boolean sourcefilter "0"
 		proto_add_dynamic_defaults
 		[ -n "$zone" ] && {
 			json_add_string zone "$zone"