tc: use rate filter with mtu 64k

[pve-common.git] / data / PVE / Network.pm

diff --git a/data/PVE/Network.pm b/data/PVE/Network.pm
index 2c356ebe4af455762f7ac7f6c3b178d061bce376..a3551deea49b24d6737947d62f7c7cc7ccaa87c8 100644 (file)
--- a/data/PVE/Network.pm
+++ b/data/PVE/Network.pm
@@ -16,12 +16,12 @@ sub setup_tc_rate_limit {
 
     run_command("/sbin/tc qdisc add dev $iface handle ffff: ingress");
 
-    # this does not work wit virtio - don't know why
-    #run_command("/sbin/tc filter add dev $iface parent ffff: protocol ip prio 50 u32 match ip src 0.0.0.0/0 police rate ${rate}bps burst ${burst}b drop flowid :1");
-    # so we use avrate instead
-    run_command("/sbin/tc filter add dev $iface parent ffff: " .
-               "protocol ip prio 50 estimator 1sec 8sec " .
-               "u32 match ip src 0.0.0.0/0 police avrate ${rate}bps drop flowid :1");
+    # virtio uses large packets 64K, so we need to set mtu to that
+    # value - else filter drops those packets and rate limit does not work.
+    run_command("/sbin/tc filter add dev $iface parent ffff: "
+               "protocol ip prio 50 u32 match ip src 0.0.0.0/0 "
+               "police rate ${rate}bps burst ${burst}b "
+               "mtu 64kb drop flowid :1");
 
     # tbf does not work for unknown reason
     #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST