[openwrt/openwrt] umbim: extract common code from static and dhcp(v6) setup procedure

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/aa7873a9e6f69f04cafcbb37a6b3ad1f4e6f1a69

commit aa7873a9e6f69f04cafcbb37a6b3ad1f4e6f1a69
Author: Lech Perczak <lech.perczak at gmail.com>
AuthorDate: Sat Nov 6 17:51:25 2021 +0100

    umbim: extract common code from static and dhcp(v6) setup procedure
    
    Beginnings and endings of sub-interface creation procedure were
    literally duplicates - extract them outside if "if" blocks
    
    Signed-off-by: Lech Perczak <lech.perczak at gmail.com>
---
 .../utils/umbim/files/lib/netifd/proto/mbim.sh     | 50 +++++++---------------
 1 file changed, 16 insertions(+), 34 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 7ac3cb1c70..da3f484223 100755
--- a/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh
+++ b/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh
@@ -203,11 +203,11 @@ _proto_mbim_setup() {
 	[ -z "$dhcpv6" ] && dhcpv6=1
 
 	[ "$iptype" != "ipv6" ] && {
+		json_init
+		json_add_string name "${interface}_4"
+		json_add_string ifname "@$interface"
 		ipv4address=$(_proto_mbim_get_field ipv4address "$mbimconfig")
 		if [ -n "$ipv4address" ]; then
-			json_init
-			json_add_string name "${interface}_4"
-			json_add_string ifname "@$interface"
 			json_add_string proto "static"
 
 			json_add_array ipaddr
@@ -225,32 +225,23 @@ _proto_mbim_setup() {
 				done
 				json_close_array
 			}
-
-			proto_add_dynamic_defaults
-			[ -n "$zone" ] && json_add_string zone "$zone"
-			[ -n "$ip4table" ] && json_add_string ip4table "$ip4table"
-			json_close_object
-			ubus call network add_dynamic "$(json_dump)"
 		elif [ "$dhcp" != 0 ]; then
 			echo "mbim[$$]" "Starting DHCP on $ifname"
-			json_init
-			json_add_string name "${interface}_4"
-			json_add_string ifname "@$interface"
 			json_add_string proto "dhcp"
-			proto_add_dynamic_defaults
-			[ -n "$zone" ] && json_add_string zone "$zone"
-			[ -n "$ip4table" ] && json_add_string ip4table "$ip4table"
-			json_close_object
-			ubus call network add_dynamic "$(json_dump)"
 		fi
+		proto_add_dynamic_defaults
+		[ -n "$zone" ] && json_add_string zone "$zone"
+		[ -n "$ip4table" ] && json_add_string ip4table "$ip4table"
+		json_close_object
+		ubus call network add_dynamic "$(json_dump)"
 	}
 
 	[ "$iptype" != "ipv4" ] && {
+		json_init
+		json_add_string name "${interface}_6"
+		json_add_string ifname "@$interface"
 		ipv6address=$(_proto_mbim_get_field ipv6address "$mbimconfig")
 		if [ -n "$ipv6address" ]; then
-			json_init
-			json_add_string name "${interface}_6"
-			json_add_string ifname "@$interface"
 			json_add_string proto "static"
 
 			json_add_array ip6addr
@@ -274,25 +265,16 @@ _proto_mbim_setup() {
 				done
 				json_close_array
 			}
-
-			proto_add_dynamic_defaults
-			[ -n "$zone" ] && json_add_string zone "$zone"
-			[ -n "$ip6table" ] && json_add_string ip6table "$ip6table"
-			json_close_object
-			ubus call network add_dynamic "$(json_dump)"
 		elif [ "$dhcpv6" != 0 ]; then
 			echo "mbim[$$]" "Starting DHCPv6 on $ifname"
-			json_init
-			json_add_string name "${interface}_6"
-			json_add_string ifname "@$interface"
 			json_add_string proto "dhcpv6"
 			json_add_string extendprefix 1
-			proto_add_dynamic_defaults
-			[ -n "$zone" ] && json_add_string zone "$zone"
-			[ -n "$ip6table" ] && json_add_string ip6table "$ip6table"
-			json_close_object
-			ubus call network add_dynamic "$(json_dump)"
 		fi
+		proto_add_dynamic_defaults
+		[ -n "$zone" ] && json_add_string zone "$zone"
+		[ -n "$ip6table" ] && json_add_string ip6table "$ip6table"
+		json_close_object
+		ubus call network add_dynamic "$(json_dump)"
 	}
 
 	[ -z "$mtu" ] && {