runqemu: fix networking issues

After switching from ifconfig to ip, networking stopped working. This
commit contains the following fixes:

 * set a decent broadcast address for the tap device;
 * bring up the device;
 * add the route using ip tool instead of the old route tool;

(From OE-Core rev: a286514e2311f52b54d3571dbac6d34aff39e591)

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 12 deletions

diff --git a/scripts/runqemu-ifup b/scripts/runqemu-ifup
index 8948153d5a..5f6a437cd7 100755
--- a/scripts/runqemu-ifup
+++ b/scripts/runqemu-ifup
@@ -80,16 +80,6 @@ if [ ! -x "$IFCONFIG" ]; then
         exit 1
 fi
 
-ROUTE=`which route`
-if [ "x$ROUTE" = "x" ]; then
-        # better than nothing...
-        ROUTE=/sbin/route
-fi
-if [ ! -x "$ROUTE" ]; then
-        echo "$ROUTE cannot be executed"
-        exit 1
-fi
-
 IPTABLES=`which iptables 2> /dev/null`
 if [ "x$IPTABLES" = "x" ]; then
         IPTABLES=/sbin/iptables
@@ -100,10 +90,11 @@ if [ ! -x "$IPTABLES" ]; then
 fi
 
 n=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ]
-$IFCONFIG addr add 192.168.7.$n/32 dev $TAP
+$IFCONFIG addr add 192.168.7.$n/32 broadcast 192.168.7.255 dev $TAP
+$IFCONFIG link set dev $TAP up
 
 dest=$[ (`echo $TAP | sed 's/tap//'` * 2) + 2 ]
-$ROUTE add -host 192.168.7.$dest $TAP
+$IFCONFIG route add to 192.168.7.$dest dev $TAP
 
 # setup NAT for tap0 interface to have internet access in QEMU
 $IPTABLES -A POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$n/32