convert network config to DSA https://openwrt.org/releases/21.02/notes-21.02.0#new_network_configuration_syntax_and_boardjson_change

convert-net.sh

#!/bin/sh

. /lib/functions.sh
. /usr/share/libubox/jshn.sh
. /etc/openwrt_release

uci_add_list() {
	local PACKAGE="$1"
	local CONFIG="$2"
	local OPTION="$3"
	local VALUE="$4"

	/sbin/uci ${UCI_CONFIG_DIR:+-c $UCI_CONFIG_DIR} add_list "$PACKAGE.$CONFIG.$OPTION=$VALUE"
}


log() {
	logger -s -t convert $@
}

setup_ether() {
	local cfg="$1"
	local type
	local ifname
	type=$(uci_get network $cfg type)
	ifname=$(uci_get network $cfg ifname)
	if [ "$type" == "bridge" ] ; then
		uci_remove network $cfg type
		uci_set network $cfg device "br-$cfg"
		uci_add network device ; cfg_dev="$CONFIG_SECTION"
		uci_set network $cfg_dev type "bridge"
		uci_set network $cfg_dev name "br-$cfg"
		for i in $ifname ; do
			log "$cfg $ifname"
			uci_add_list network $cfg_dev ports "$i"
		done
		uci_remove network $cfg ifname
	else
		if [ -n "$ifname" ] ; then
			log "$cfg $ifname"
			uci_set network $cfg device "$ifname"
			uci_remove network $cfg ifname
		fi
	fi
}

case $DISTRIB_RELEASE in
	22.03.*)
		config_load network
		config_foreach setup_ether interface
		uci_commit network
	;;
	*)
		log "Wrong version $DISTRIB_RELEASE needs 22.03.*"
	;;
esac