network: prevent unnecessary interface down/up cycles if no mac address change is...

[openwrt.git] / package / base-files / files / lib / network / config.sh

diff --git a/package/base-files/files/lib/network/config.sh b/package/base-files/files/lib/network/config.sh
index dfee674..cefd559 100755 (executable)
--- a/package/base-files/files/lib/network/config.sh
+++ b/package/base-files/files/lib/network/config.sh
@@ -83,6 +83,8 @@ sort_list() {
 prepare_interface() {
        local iface="$1"
        local config="$2"
+       local vifmac="$3"
+       local proto
 
        # if we're called for the bridge interface itself, don't bother trying
        # to create any interfaces here. The scripts have already done that, otherwise
@@ -90,9 +92,18 @@ prepare_interface() {
        [ "br-$config" = "$iface" -o -e "$iface" ] && return 0;
        
        ifconfig "$iface" 2>/dev/null >/dev/null && {
-               # make sure the interface is removed from any existing bridge and brought down
-               ifconfig "$iface" down
+               config_get proto "$config" proto
+
+               # make sure the interface is removed from any existing bridge and deconfigured,
+               # (deconfigured only if the interface is not set to proto=none)
                unbridge "$iface"
+               [ "$proto" = none ] || ifconfig "$iface" 0.0.0.0
+
+               # Change interface MAC address if requested
+               [ -n "$vifmac" ] && {
+                       ifconfig "$iface" down
+                       ifconfig "$iface" hw ether "$vifmac" up
+               }
        }
 
        # Setup VLAN interfaces
@@ -120,7 +131,7 @@ prepare_interface() {
                                        $DEBUG brctl setfd "br-$config" 0
                                        $DEBUG ifconfig "br-$config" up
                                        $DEBUG brctl addif "br-$config" "$iface"
-                                       $DEBUG brctl stp "br-$config" ${stp:-off}
+                                       $DEBUG brctl stp "br-$config" ${stp:-0}
                                        # Creating the bridge here will have triggered a hotplug event, which will
                                        # result in another setup_interface() call, so we simply stop processing
                                        # the current event at this point.
@@ -172,6 +183,9 @@ setup_interface_static() {
                done
        }
 
+       config_get type "$config" TYPE                                                                               
+       [ "$type" = "alias" ] && return 0
+
        env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" &
 }
 
@@ -209,6 +223,7 @@ setup_interface_alias() {
 setup_interface() {
        local iface="$1"
        local config="$2"
+       local vifmac="$4"
        local proto
        local macaddr
 
@@ -218,7 +233,7 @@ setup_interface() {
        }
        proto="${3:-$(config_get "$config" proto)}"
        
-       prepare_interface "$iface" "$config" || return 0
+       prepare_interface "$iface" "$config" "$vifmac" || return 0
        
        [ "$iface" = "br-$config" ] && {
                # need to bring up the bridge and wait a second for 
@@ -231,8 +246,10 @@ setup_interface() {
        # Interface settings
        config_get mtu "$config" mtu
        config_get macaddr "$config" macaddr
-       grep "$iface:" /proc/net/dev > /dev/null && \
+       grep "$iface:" /proc/net/dev > /dev/null && {
+               [ -n "$macaddr" ] && $DEBUG ifconfig "$iface" down
                $DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} up
+       }
        set_interface_ifname "$config" "$iface"
 
        pidfile="/var/run/$iface.pid"
@@ -275,6 +292,11 @@ setup_interface() {
                        fi
                ;;
        esac
+       [ "$proto" = none ] || {
+               for ifn in `ifconfig | grep "^$iface:" | awk '{print $1}'`; do
+                       ifconfig "$ifn" down
+               done
+       }
        config_set "$config" aliases ""
        config_set "$config" alias_count 0
        config_foreach setup_interface_alias alias "$config" "$iface"