X-Git-Url: http://club.cc.cmu.edu/~cmccabe/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=vm-common.sh;h=9f8bbefe808749fb72d6cdb8b390323a081ead3e;hb=af6e83b9253100d04607d2b41897defad1c0e6f4;hp=2c57b05c3c1345029cf533c92b61a9a79bae647e;hpb=feb108f20ae15b0bd47ce11fc6e382013876aa86;p=cmccabe-bin

diff --git a/vm-common.sh b/vm-common.sh
index 2c57b05..9f8bbef 100644
--- a/vm-common.sh
+++ b/vm-common.sh
@@ -4,7 +4,7 @@ die() {
 }
 
 run_vm() {
-    sysctl -w net.ipv4.ip_forward=1 || die "failed to enable ip_forward"
+    /usr/sbin/sysctl -w net.ipv4.ip_forward=1 || die "failed to enable ip_forward"
     ID=$1
     shift
     NARGS=$@
@@ -15,16 +15,25 @@ run_vm() {
     echo "running qemu with ssh port $ADMIN_PORT, vnc ID $ID"
     VNC_EFFECTIVE_PORT=`expr 5900 + $ID`
     echo "see output with vncviewer 127.0.0.1:$VNC_EFFECTIVE_PORT"
-    qemu-kvm \
+    model_to_use=${NET_MODEL-e1000}
+    num_interfaces_to_use=${NUM_INTERFACES-2}
+    if [ $num_interfaces_to_use -eq 2 ]; then
+        SECOND_NET_SWITCHES="-net nic,vlan=1,macaddr=$MAC_ADDR,model=$model_to_use \
+            -net socket,vlan=1,mcast=230.0.0.1:1234"
+    else 
+        SECOND_NET_SWITCHES=""
+    fi
+    QEMU_VARIANT=${QEMU_VARIANT-qemu-kvm}
+    ${QEMU_VARIANT} \
         -daemonize \
         -vga std \
         -redir tcp:$ADMIN_PORT::22 \
-        -vnc 127.0.0.1:$ID \
-        -net nic,vlan=0,model=e1000 \
+        -net nic,vlan=0,model=$model_to_use \
         -net user,vlan=0,net=10.0.2.0/8,host=10.0.2.2,hostname=vm$ID \
-        -net nic,vlan=1,macaddr=$MAC_ADDR,model=e1000 \
-        -net socket,vlan=1,mcast=230.0.0.1:1234 \
+        -vnc 127.0.0.1:$ID \
+        $SECOND_NET_SWITCHES \
         $NARGS || die "qemu invocation failed."
+        #-sdl -frame \
 }
 
 # Tap stuff (currently unused):