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base-files: some /lib/network/config.sh refactoring
* Localize a lot more variables than before. * Do stuff or localize variables at later points or inner blocks so less commands are executed in some cases. * Use the default option of config_get where it makes sense. Signed-off-by: Malte S. Stretz <mss@apache.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17160 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -24,8 +24,7 @@ find_config() {
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}
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scan_interfaces() {
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local cfgfile="$1"
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local mode iftype iface ifname device
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local cfgfile="${1:-network}"
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interfaces=
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config_cb() {
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case "$1" in
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@ -33,18 +32,19 @@ scan_interfaces() {
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config_set "$2" auto 1
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;;
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esac
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local iftype ifname device proto
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config_get iftype "$CONFIG_SECTION" TYPE
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case "$iftype" in
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interface)
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config_get proto "$CONFIG_SECTION" proto
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append interfaces "$CONFIG_SECTION"
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config_get proto "$CONFIG_SECTION" proto
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config_get iftype "$CONFIG_SECTION" type
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config_get ifname "$CONFIG_SECTION" ifname
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config_get device "$CONFIG_SECTION" device
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config_set "$CONFIG_SECTION" device "${device:-$ifname}"
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config_get device "$CONFIG_SECTION" device "$ifname"
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config_set "$CONFIG_SECTION" device "$device"
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case "$iftype" in
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bridge)
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config_set "$CONFIG_SECTION" ifnames "${device:-$ifname}"
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config_set "$CONFIG_SECTION" ifnames "$device"
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config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
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;;
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esac
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@ -52,7 +52,7 @@ scan_interfaces() {
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;;
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esac
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}
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config_load "${cfgfile:-network}"
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config_load "${cfgfile}"
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}
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add_vlan() {
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@ -84,7 +84,6 @@ prepare_interface() {
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local iface="$1"
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local config="$2"
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local vifmac="$3"
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local proto
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# if we're called for the bridge interface itself, don't bother trying
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# to create any interfaces here. The scripts have already done that, otherwise
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@ -92,6 +91,7 @@ prepare_interface() {
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[ "br-$config" = "$iface" -o -e "$iface" ] && return 0;
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ifconfig "$iface" 2>/dev/null >/dev/null && {
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local proto
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config_get proto "$config" proto
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# make sure the interface is removed from any existing bridge and deconfigured,
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@ -111,14 +111,13 @@ prepare_interface() {
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ifconfig "$iface" 2>/dev/null >/dev/null || return 0
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# Setup bridging
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local iftype
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config_get iftype "$config" type
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config_get stp "$config" stp
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case "$iftype" in
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bridge)
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[ -x /usr/sbin/brctl ] && {
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ifconfig "br-$config" 2>/dev/null >/dev/null && {
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local newdevs=
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local newdevs devices
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config_get devices "$config" device
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for dev in $(sort_list "$devices" "$iface"); do
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append newdevs "$dev"
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@ -127,11 +126,13 @@ prepare_interface() {
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$DEBUG brctl addif "br-$config" "$iface"
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# Bridge existed already. No further processing necesary
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} || {
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local stp
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config_get_bool stp "$config" stp 0
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$DEBUG brctl addbr "br-$config"
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$DEBUG brctl setfd "br-$config" 0
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$DEBUG ifconfig "br-$config" up
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$DEBUG brctl addif "br-$config" "$iface"
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$DEBUG brctl stp "br-$config" ${stp:-0}
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$DEBUG brctl stp "br-$config" $stp
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# Creating the bridge here will have triggered a hotplug event, which will
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# result in another setup_interface() call, so we simply stop processing
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# the current event at this point.
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@ -148,6 +149,7 @@ set_interface_ifname() {
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local config="$1"
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local ifname="$2"
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local device
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config_get device "$1" device
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uci_set_state network "$config" ifname "$ifname"
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uci_set_state network "$config" device "$device"
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@ -161,11 +163,13 @@ setup_interface_static() {
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local iface="$1"
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local config="$2"
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local ipaddr netmask ip6addr
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config_get ipaddr "$config" ipaddr
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config_get netmask "$config" netmask
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config_get ip6addr "$config" ip6addr
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[ -z "$ipaddr" -o -z "$netmask" ] && [ -z "$ip6addr" ] && return 1
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local gateway ip6gw dns bcast
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config_get gateway "$config" gateway
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config_get ip6gw "$config" ip6gw
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config_get dns "$config" dns
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@ -194,24 +198,30 @@ setup_interface_alias() {
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local parent="$2"
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local iface="$3"
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local cfg
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config_get cfg "$config" interface
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[ "$parent" == "$cfg" ] || return 0
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# alias counter
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config_get ctr "$parent" alias_count
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local ctr
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config_get ctr "$parent" alias_count 0
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ctr="$(($ctr + 1))"
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config_set "$parent" alias_count "$ctr"
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# alias list
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local list
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config_get list "$parent" aliases
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append list "$config"
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config_set "$parent" aliases "$list"
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set_interface_ifname "$config" "$iface:$ctr"
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config_get proto "$config" proto
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case "${proto:-static}" in
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iface="$iface:$ctr"
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set_interface_ifname "$config" "$iface"
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local proto
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config_get proto "$config" proto "static"
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case "${proto}" in
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static)
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setup_interface_static "$iface:$ctr" "$config"
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setup_interface_static "$iface" "$config"
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;;
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*)
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echo "Unsupported type '$proto' for alias config '$config'"
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@ -223,16 +233,13 @@ setup_interface_alias() {
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setup_interface() {
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local iface="$1"
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local config="$2"
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local proto="$3"
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local vifmac="$4"
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local proto
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local macaddr
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local hasipv6
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[ -n "$config" ] || {
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config=$(find_config "$iface")
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[ "$?" = 0 ] || return 1
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}
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proto="${3:-$(config_get "$config" proto)}"
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prepare_interface "$iface" "$config" "$vifmac" || return 0
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@ -247,21 +254,24 @@ setup_interface() {
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# Check whether this interface has an IPv6 address
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# defined and ensure that the kmod is loaded since
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# ifup could be triggered before modules are loaded.
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local hasipv6
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config_get hasipv6 "$config" ip6addr
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[ -n "$hasipv6" ] && [ ! -d /proc/sys/net/ipv6 ] && {
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grep -q '^ipv6' /etc/modules.d/* && insmod ipv6
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}
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# Interface settings
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config_get mtu "$config" mtu
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config_get macaddr "$config" macaddr
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grep "$iface:" /proc/net/dev > /dev/null && {
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local mtu macaddr
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config_get mtu "$config" mtu
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config_get macaddr "$config" macaddr
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[ -n "$macaddr" ] && $DEBUG ifconfig "$iface" down
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$DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} up
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}
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set_interface_ifname "$config" "$iface"
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pidfile="/var/run/$iface.pid"
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[ -n "$proto" ] || config_get proto "$config" proto
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case "$proto" in
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static)
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setup_interface_static "$iface" "$config"
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@ -269,11 +279,11 @@ setup_interface() {
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dhcp)
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# prevent udhcpc from starting more than once
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lock "/var/lock/dhcp-$iface"
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pid="$(cat "$pidfile" 2>/dev/null)"
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local pid="$(cat "$pidfile" 2>/dev/null)"
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if [ -d "/proc/$pid" ] && grep udhcpc "/proc/${pid}/cmdline" >/dev/null 2>/dev/null; then
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lock -u "/var/lock/dhcp-$iface"
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else
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local ipaddr netmask hostname proto1 clientid
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config_get ipaddr "$config" ipaddr
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config_get netmask "$config" netmask
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config_get hostname "$config" hostname
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@ -284,6 +294,7 @@ setup_interface() {
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$DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
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# don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
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local dhcpopts
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[ ."$proto1" != ."$proto" ] && dhcpopts="-n -q"
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$DEBUG eval udhcpc -t 0 -i "$iface" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} ${clientid:+-c $clientid} -b -p "$pidfile" ${dhcpopts:- -R &}
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lock -u "/var/lock/dhcp-$iface"
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@ -306,6 +317,8 @@ setup_interface() {
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ifconfig "$ifn" down
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done
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}
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local aliases
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config_set "$config" aliases ""
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config_set "$config" alias_count 0
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config_foreach setup_interface_alias alias "$config" "$iface"
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