Add files for swift over UDP.

[swifty.git] / src / libswift_udp / mfold / netem.default.sh

diff --git a/src/libswift_udp/mfold/netem.default.sh b/src/libswift_udp/mfold/netem.default.sh
new file mode 100755 (executable)
index 0000000..830cc83
--- /dev/null
+++ b/src/libswift_udp/mfold/netem.default.sh
@@ -0,0 +1,103 @@
+#!/bin/bash
+# Sets HTB/Netem parameters for the server interfaces. netroot script
+# must be run before this.
+
+if [ ! $EMIF ] ; then
+    exit
+fi
+
+if [ ! $SWFTPORT ]; then
+    echo No swift port defined!
+    exit 1
+fi
+
+if [ ! $EMLOSS ]; then
+    EMLOSS=0%
+fi
+
+if [ ! $EMDELAY ]; then
+    EMDELAY=10ms
+fi
+
+if [ ! $EMBW ]; then
+    EMBW=10mbit
+fi
+
+if [ ! $EMJTTR ]; then
+    EMJTTR=0ms
+fi
+
+# ingress params
+if [ ! $EMLOSS_IN ]; then
+    EMLOSS_IN=$EMLOSS
+fi
+
+if [ ! $EMDELAY_IN ]; then
+    EMDELAY_IN=$EMDELAY
+fi
+
+# zero delay in lo may affect htb performance accuracy (?)
+if [ $EMDELAY_IN == 0ms ]; then
+    EMDELAY_LO_IN=0.1ms
+else
+    EMDELAY_LO_IN=$EMDELAY_IN
+fi
+
+if [ ! $EMBW_IN ]; then
+    EMBW_IN=$EMBW
+fi
+
+if [ ! $EMJTTR_IN ]; then
+    EMJTTR_IN=$EMJTTR
+fi
+
+# egress params
+if [ ! $EMLOSS_OUT ]; then
+    EMLOSS_OUT=$EMLOSS
+fi
+
+if [ ! $EMDELAY_OUT ]; then
+    EMDELAY_OUT=$EMDELAY
+fi
+
+if [ ! $EMBW_OUT ]; then
+    EMBW_OUT=$EMBW
+fi
+
+if [ ! $EMJTTR_OUT ]; then
+    EMJTTR_OUT=$EMJTTR
+fi
+
+TC="sudo tc "
+
+CLASSID=$(($SWFTPORT - 9900))
+HANDLEID=1$CLASSID
+
+# ingress config
+echo adding htb class 1:$CLASSID with rate $EMBW_IN to ifb0
+$TC class add dev ifb0 parent 1: classid 1:$CLASSID htb rate $EMBW_IN || exit 2
+echo adding filter for destination port $SWFTPORT for to ifb0
+$TC filter add dev ifb0 protocol ip prio 1 handle ::$CLASSID u32 \
+    match ip dport $SWFTPORT 0xffff flowid 1:$CLASSID || exit 3
+echo adding downlink netem handle $HANDLEID for $EMDELAY_IN, $EMLOSS_IN to ifb0
+$TC qdisc add dev ifb0 parent 1:$CLASSID handle $HANDLEID \
+    netem delay $EMDELAY_IN $EMJTTR_IN 25% loss $EMLOSS_IN || exit 4
+
+echo adding htb class 1:$CLASSID with rate $EMBW_IN to lo
+$TC class add dev lo parent 1: classid 1:$CLASSID htb rate $EMBW_IN || exit 5
+echo adding filter for destination port $SWFTPORT for to lo
+$TC filter add dev lo protocol ip prio 1 handle ::$CLASSID u32 \
+    match ip dport $SWFTPORT 0xffff flowid 1:$CLASSID || exit 6
+echo adding downlink netem handle $HANDLEID for $EMDELAY_LO_IN, $EMLOSS_IN to lo
+$TC qdisc add dev lo parent 1:$CLASSID handle $HANDLEID \
+    netem delay $EMDELAY_LO_IN $EMJTTR_IN 25% loss $EMLOSS_IN || exit 7
+
+#egress config
+echo adding htb class 1:$CLASSID with rate $EMBW_OUT to $EMIF
+$TC class add dev $EMIF parent 1: classid 1:$CLASSID htb rate $EMBW_OUT || exit 8
+echo adding filter for source port $SWFTPORT for to $EMIF
+$TC filter add dev $EMIF protocol ip prio 1 handle ::$CLASSID u32 \
+    match ip sport $SWFTPORT 0xffff flowid 1:$CLASSID || exit 9
+echo adding uplink netem handle $HANDLEID for $EMDELAY_OUT, $EMLOSS_OUT to $EMIF
+$TC qdisc add dev $EMIF parent 1:$CLASSID handle $HANDLEID \
+    netem delay $EMDELAY_OUT $EMJTTR_OUT 25% loss $EMLOSS_OUT || exit 10