sqm-scripts-extra: additional experimental test scripts for SQM

Introduce package for additional experimental scripts for sqm-scripts.
The target is to provide an opportunity to test QoS scripts and qdiscs
still under development. E.g. cake related scripts can be placed here
for testing.

sqm-scripts and luci-app-sqm will pick up the new scripts automatically.

Initially the package contains five cake-related scripts.

The package depends on the main sqm-scripts package.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

11 files changed, 558 insertions, 0 deletions

diff --git a/net/sqm-scripts-extra/Makefile b/net/sqm-scripts-extra/Makefile
new file mode 100644
index 000000000..28e6ccb58
--- /dev/null
+++ b/net/sqm-scripts-extra/Makefile
@@ -0,0 +1,47 @@
+#
+# This is free software, licensed under the GNU General Public License v2.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=sqm-scripts-extra
+PKG_VERSION:=2016-06-08
+PKG_RELEASE:=1
+PKG_LICENSE:=GPLv2
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_RELEASE).tar.xz
+PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)-$(PKG_RELEASE)
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/sqm-scripts-extra
+  SECTION:=net
+  CATEGORY:=Base system
+  DEPENDS:=+sqm-scripts
+  TITLE:=SQM Scripts - additional experimental scripts for testing
+  PKGARCH:=all
+  MAINTAINER:=Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>, \
+	Sebastian Moeller <moeller0@gmx.de>
+endef
+
+define Package/sqm-scripts-extra/description
+  A set of experimental scripts for sqm-scripts QoS package. The contents of this package may
+  change as new qdiscs like 'cake' are developed and tested.
+endef
+
+define Package/sqm-scripts-extra/download
+endef
+
+define Build/Prepare
+endef
+
+define Build/Compile
+endef
+
+define Package/sqm-scripts-extra/install
+	$(INSTALL_DIR) $(1)/usr/lib/sqm
+	$(INSTALL_DATA) ./src/* $(1)/usr/lib/sqm/
+endef
+
+$(eval $(call BuildPackage,sqm-scripts-extra))
+
diff --git a/net/sqm-scripts-extra/src/test_LAN_dual-isolate__piece_of_cake.qos b/net/sqm-scripts-extra/src/test_LAN_dual-isolate__piece_of_cake.qos
new file mode 100644
index 000000000..4f1380d63
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_LAN_dual-isolate__piece_of_cake.qos
@@ -0,0 +1,102 @@
+#!/bin/sh
+################################################################################
+# test_LAN_triple-isolate__piece_of_cake.qos (Cero3 Shaper)
+#
+# Abstract:
+# This is a one band cake and ipv6 enabled shaping script for Ethernet
+# gateways. This exists for the purpose of testing cake's different isolation
+# options, specifically the non-directional triple-isolate feature that promises
+# to finally tackle the bit-torrent hole in simple.qos.
+# This specific version is supposed to be used on LAN interfaces:
+# 	the script's ingress direction equals the internet/WAN upload direction
+# 	the script's egress direction equals the internet/WAN download direction
+#
+# NOTE: Shaping on a LAN interface only affects machines connected via that
+#	LAN interface, so typically WIFI/WLAN traffic will not be shaped!
+#
+################################################################################
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+#  Copyright (C) 2012-2016
+#    Michael D. Taht, Toke Høiland-Jørgensen, Sebastian Moeller
+#
+################################################################################
+
+. ${SQM_LIB_DIR}/defaults.sh
+
+################################################################################
+
+
+# this will only work with cake as qdisc...
+QDISC=cake
+
+
+# to keep this as simple as possible we ignore the *_CAKE_OPTS from defaults.sh
+INGRESS_CAKE_OPTS="besteffort dual-srchost"
+EGRESS_CAKE_OPTS="besteffort dual-dsthost"
+
+
+egress() {
+    sqm_debug "egress"
+    $TC qdisc del dev $IFACE root 2>/dev/null
+    $TC qdisc add dev $IFACE root $( get_stab_string ) cake bandwidth ${UPLINK}kbit $( get_cake_lla_string ) ${EGRESS_CAKE_OPTS} ${EQDISC_OPTS}
+}
+
+
+ingress() {
+    sqm_debug "ingress"
+    $TC qdisc del dev $IFACE handle ffff: ingress 2>/dev/null
+    $TC qdisc add dev $IFACE handle ffff: ingress
+    $TC qdisc del dev $DEV root 2>/dev/null
+    $TC qdisc add dev $DEV root $( get_stab_string ) cake bandwidth ${DOWNLINK}kbit $( get_cake_lla_string ) ${INGRESS_CAKE_OPTS} ${IQDISC_OPTS}
+
+    $IP link set dev $DEV up
+
+    # redirect all IP packets arriving in $IFACE to ifb0
+
+    $TC filter add dev $IFACE parent ffff: protocol all prio 10 u32 \
+	match u32 0 0 flowid 1:1 action mirred egress redirect dev $DEV
+}
+
+sqm_start() {
+
+    #sm: flip upload and download bandwith so that the GUI values reflect directionality in regard to the ISP
+    #sm: NOTE this is ugly and should be performed in defaults.sh or functions.sh if at all
+    #sm: but for quick and dirty testing this should do
+    local ORIG_UPLINK=${UPLINK}
+    local ORIG_DOWNLINK=${DOWNLINK}
+    UPLINK=${ORIG_DOWNLINK}
+    DOWNLINK=${ORIG_UPLINK}
+
+
+    [ -n "$IFACE" ] || return 1
+    do_modules
+    verify_qdisc $QDISC "cake" || return 1
+    sqm_debug "Starting ${SCRIPT}"
+
+    [ -z "$DEV" ] && DEV=$( get_ifb_for_if ${IFACE} )
+
+
+    if [ "${UPLINK}" -ne 0 ];
+    then
+        egress
+        sqm_debug "egress shaping activated"
+    else
+        sqm_debug "egress shaping deactivated"
+        $TC qdisc del dev ${IFACE} root 2> /dev/null
+    fi
+    if [ "${DOWNLINK}" -ne 0 ];
+    then
+	verify_qdisc ingress "ingress" || return 1
+        ingress
+        sqm_debug "ingress shaping activated"
+    else
+        sqm_debug "ingress shaping deactivated"
+        $TC qdisc del dev ${DEV} root 2> /dev/null
+        $TC qdisc del dev ${IFACE} ingress 2> /dev/null
+    fi
+    return 0
+}
diff --git a/net/sqm-scripts-extra/src/test_LAN_dual-isolate__piece_of_cake.qos.help b/net/sqm-scripts-extra/src/test_LAN_dual-isolate__piece_of_cake.qos.help
new file mode 100644
index 000000000..616b5e4f1
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_LAN_dual-isolate__piece_of_cake.qos.help
@@ -0,0 +1,12 @@
+test_LAN_dual-isolate__piece_of_cake.qos (Cero3 Shaper)
+
+Abstract:
+This is a one band cake and ipv6 enabled shaping script for Ethernet gateways. 
+This exists for the purpose of testing cake's different isolation options, 
+specifically the non-directional dual-[src|dst]host feature that promises to finally 
+tackle the bit-torrent hole in simple.qos. 
+This specific version is supposed to be used on LAN interfaces: 
+ the script's ingress direction equals the internet/WAN upload direction 
+ the script's egress direction equals the internet/WAN download direction
+NOTE: Shaping on a LAN interface only affects machines connected via that 
+LAN interface, so typically WIFI/WLAN traffic will not be shaped!
diff --git a/net/sqm-scripts-extra/src/test_LAN_triple-isolate__piece_of_cake.qos b/net/sqm-scripts-extra/src/test_LAN_triple-isolate__piece_of_cake.qos
new file mode 100644
index 000000000..761b27de0
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_LAN_triple-isolate__piece_of_cake.qos
@@ -0,0 +1,102 @@
+#!/bin/sh
+################################################################################
+# test_LAN_triple-isolate__piece_of_cake.qos (Cero3 Shaper)
+#
+# Abstract:
+# This is a one band cake and ipv6 enabled shaping script for Ethernet
+# gateways. This exists for the purpose of testing cake's different isolation
+# options, specifically the non-directional triple-isolate feature that promises
+# to finally tackle the bit-torrent hole in simple.qos.
+# This specific version is supposed to be used on LAN interfaces:
+# 	the script's ingress direction equals the internet/WAN upload direction
+# 	the script's egress direction equals the internet/WAN download direction
+#
+# NOTE: Shaping on a LAN interface only affects machines connected via that
+#	LAN interface, so typically WIFI/WLAN traffic will not be shaped!
+#
+################################################################################
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+#  Copyright (C) 2012-2016
+#    Michael D. Taht, Toke Høiland-Jørgensen, Sebastian Moeller
+#
+################################################################################
+
+. ${SQM_LIB_DIR}/defaults.sh
+
+################################################################################
+
+
+# this will only work with cake as qdisc...
+QDISC=cake
+
+
+# to keep this as simple as possible we ignore the *_CAKE_OPTS from defaults.sh
+INGRESS_CAKE_OPTS="besteffort triple-isolate"
+EGRESS_CAKE_OPTS="besteffort triple-isolate"
+
+
+egress() {
+    sqm_debug "egress"
+    $TC qdisc del dev $IFACE root 2>/dev/null
+    $TC qdisc add dev $IFACE root $( get_stab_string ) cake bandwidth ${UPLINK}kbit $( get_cake_lla_string ) ${EGRESS_CAKE_OPTS} ${EQDISC_OPTS}
+}
+
+
+ingress() {
+    sqm_debug "ingress"
+    $TC qdisc del dev $IFACE handle ffff: ingress 2>/dev/null
+    $TC qdisc add dev $IFACE handle ffff: ingress
+    $TC qdisc del dev $DEV root 2>/dev/null
+    $TC qdisc add dev $DEV root $( get_stab_string ) cake bandwidth ${DOWNLINK}kbit $( get_cake_lla_string ) ${INGRESS_CAKE_OPTS} ${IQDISC_OPTS}
+
+    $IP link set dev $DEV up
+
+    # redirect all IP packets arriving in $IFACE to ifb0
+
+    $TC filter add dev $IFACE parent ffff: protocol all prio 10 u32 \
+	match u32 0 0 flowid 1:1 action mirred egress redirect dev $DEV
+}
+
+sqm_start() {
+
+    #sm: flip upload and download bandwith so that the GUI values reflect directionality in regard to the ISP
+    #sm: NOTE this is ugly and should be performed in defaults.sh or functions.sh if at all
+    #sm: but for quick and dirty testing this should do
+    local ORIG_UPLINK=${UPLINK}
+    local ORIG_DOWNLINK=${DOWNLINK}
+    UPLINK=${ORIG_DOWNLINK}
+    DOWNLINK=${ORIG_UPLINK}
+
+
+    [ -n "$IFACE" ] || return 1
+    do_modules
+    verify_qdisc $QDISC "cake" || return 1
+    sqm_debug "Starting ${SCRIPT}"
+
+    [ -z "$DEV" ] && DEV=$( get_ifb_for_if ${IFACE} )
+
+
+    if [ "${UPLINK}" -ne 0 ];
+    then
+        egress
+        sqm_debug "egress shaping activated"
+    else
+        sqm_debug "egress shaping deactivated"
+        $TC qdisc del dev ${IFACE} root 2> /dev/null
+    fi
+    if [ "${DOWNLINK}" -ne 0 ];
+    then
+	verify_qdisc ingress "ingress" || return 1
+        ingress
+        sqm_debug "ingress shaping activated"
+    else
+        sqm_debug "ingress shaping deactivated"
+        $TC qdisc del dev ${DEV} root 2> /dev/null
+        $TC qdisc del dev ${IFACE} ingress 2> /dev/null
+    fi
+    return 0
+}
diff --git a/net/sqm-scripts-extra/src/test_LAN_triple-isolate__piece_of_cake.qos.help b/net/sqm-scripts-extra/src/test_LAN_triple-isolate__piece_of_cake.qos.help
new file mode 100644
index 000000000..a3501dc1f
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_LAN_triple-isolate__piece_of_cake.qos.help
@@ -0,0 +1,12 @@
+test_LAN_triple-isolate__piece_of_cake.qos (Cero3 Shaper)
+
+Abstract:
+This is a one band cake and ipv6 enabled shaping script for Ethernet gateways. 
+This exists for the purpose of testing cake's different isolation options, 
+specifically the non-directional triple-isolate feature that promises to finally 
+tackle the bit-torrent hole in simple.qos. 
+This specific version is supposed to be used on LAN interfaces: 
+ the script's ingress direction equals the internet/WAN upload direction 
+ the script's egress direction equals the internet/WAN download direction
+NOTE: Shaping on a LAN interface only affects machines connected via that 
+LAN interface, so typically WIFI/WLAN traffic will not be shaped!
diff --git a/net/sqm-scripts-extra/src/test_WAN_dual-isolate__piece_of_cake.qos b/net/sqm-scripts-extra/src/test_WAN_dual-isolate__piece_of_cake.qos
new file mode 100644
index 000000000..87eaebfff
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_WAN_dual-isolate__piece_of_cake.qos
@@ -0,0 +1,89 @@
+#!/bin/sh
+################################################################################
+# test_WAN_dual-isolate__piece_of_cake.qos (Cero3 Shaper)
+#
+# Abstract:
+# This is a one band cake and ipv6 enabled shaping script for Ethernet
+# gateways. This exists for the purpose of testing cake's different isolation
+# options, specifically the directional dual-[src|dst]host feature that promises
+# to finally tackle the bit-torrent hole in simple.qos.
+# This specific version is supposed to be used on WAN interfaces:
+# 	the script's ingress direction equals the internet/WAN download direction
+# 	the script's egress direction equals the internet/WAN upload direction
+#
+################################################################################
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+#  Copyright (C) 2012-2016
+#    Michael D. Taht, Toke Høiland-Jørgensen, Sebastian Moeller
+#
+################################################################################
+
+. ${SQM_LIB_DIR}/defaults.sh
+
+################################################################################
+
+
+# this will only work with cake as qdisc...
+QDISC=cake
+
+
+# to keep this as simple as possible we ignore the *_CAKE_OPTS from defaults.sh
+INGRESS_CAKE_OPTS="besteffort dual-dsthost"
+EGRESS_CAKE_OPTS="besteffort dual-srchost"
+
+
+egress() {
+    sqm_debug "egress"
+    $TC qdisc del dev $IFACE root 2>/dev/null
+    $TC qdisc add dev $IFACE root $( get_stab_string ) cake bandwidth ${UPLINK}kbit $( get_cake_lla_string ) ${EGRESS_CAKE_OPTS} ${EQDISC_OPTS}
+}
+
+
+ingress() {
+    sqm_debug "ingress"
+    $TC qdisc del dev $IFACE handle ffff: ingress 2>/dev/null
+    $TC qdisc add dev $IFACE handle ffff: ingress
+    $TC qdisc del dev $DEV root 2>/dev/null
+    $TC qdisc add dev $DEV root $( get_stab_string ) cake bandwidth ${DOWNLINK}kbit $( get_cake_lla_string ) ${INGRESS_CAKE_OPTS} ${IQDISC_OPTS}
+
+    $IP link set dev $DEV up
+
+    # redirect all IP packets arriving in $IFACE to ifb0
+
+    $TC filter add dev $IFACE parent ffff: protocol all prio 10 u32 \
+	match u32 0 0 flowid 1:1 action mirred egress redirect dev $DEV
+}
+
+sqm_start() {
+    [ -n "$IFACE" ] || return 1
+    do_modules
+    verify_qdisc $QDISC "cake" || return 1
+    sqm_debug "Starting ${SCRIPT}"
+
+    [ -z "$DEV" ] && DEV=$( get_ifb_for_if ${IFACE} )
+
+
+    if [ "${UPLINK}" -ne 0 ];
+    then
+        egress
+        sqm_debug "egress shaping activated"
+    else
+        sqm_debug "egress shaping deactivated"
+        $TC qdisc del dev ${IFACE} root 2> /dev/null
+    fi
+    if [ "${DOWNLINK}" -ne 0 ];
+    then
+	verify_qdisc ingress "ingress" || return 1
+        ingress
+        sqm_debug "ingress shaping activated"
+    else
+        sqm_debug "ingress shaping deactivated"
+        $TC qdisc del dev ${DEV} root 2> /dev/null
+        $TC qdisc del dev ${IFACE} ingress 2> /dev/null
+    fi
+    return 0
+}
diff --git a/net/sqm-scripts-extra/src/test_WAN_dual-isolate__piece_of_cake.qos.help b/net/sqm-scripts-extra/src/test_WAN_dual-isolate__piece_of_cake.qos.help
new file mode 100644
index 000000000..c239917c0
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_WAN_dual-isolate__piece_of_cake.qos.help
@@ -0,0 +1,10 @@
+test_WAN_dual-isolate__piece_of_cake.qos (Cero3 Shaper)
+
+Abstract:
+This is a one band cake and ipv6 enabled shaping script for Ethernet gateways. 
+This exists for the purpose of testing cake's different isolation options, 
+specifically the directional dual-[src|dst]host feature that promises to finally 
+tackle the bit-torrent hole in simple.qos. 
+This specific version is supposed to be used on WAN interfaces: 
+ the script's ingress direction equals the internet/WAN download direction 
+ the script's egress direction equals the internet/WAN upload direction
diff --git a/net/sqm-scripts-extra/src/test_WAN_triple-isolate__piece_of_cake.qos b/net/sqm-scripts-extra/src/test_WAN_triple-isolate__piece_of_cake.qos
new file mode 100644
index 000000000..5f0d7d7eb
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_WAN_triple-isolate__piece_of_cake.qos
@@ -0,0 +1,89 @@
+#!/bin/sh
+################################################################################
+# test_WAN_triple-isolate__piece_of_cake.qos (Cero3 Shaper)
+#
+# Abstract:
+# This is a one band cake and ipv6 enabled shaping script for Ethernet
+# gateways. This exists for the purpose of testing cake's different isolation
+# options, specifically the non-directional triple-isolate feature that promises
+# to finally tackle the bit-torrent hole in simple.qos.
+# This specific version is supposed to be used on WAN interfaces:
+# 	the script's ingress direction equals the internet/WAN download direction
+# 	the script's egress direction equals the internet/WAN upload direction
+#
+################################################################################
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+#  Copyright (C) 2012-2016
+#    Michael D. Taht, Toke Høiland-Jørgensen, Sebastian Moeller
+#
+################################################################################
+
+. ${SQM_LIB_DIR}/defaults.sh
+
+################################################################################
+
+
+# this will only work with cake as qdisc...
+QDISC=cake
+
+
+# to keep this as simple as possible we ignore the *_CAKE_OPTS from defaults.sh
+INGRESS_CAKE_OPTS="besteffort triple-isolate"
+EGRESS_CAKE_OPTS="besteffort triple-isolate"
+
+
+egress() {
+    sqm_debug "egress"
+    $TC qdisc del dev $IFACE root 2>/dev/null
+    $TC qdisc add dev $IFACE root $( get_stab_string ) cake bandwidth ${UPLINK}kbit $( get_cake_lla_string ) ${EGRESS_CAKE_OPTS} ${EQDISC_OPTS}
+}
+
+
+ingress() {
+    sqm_debug "ingress"
+    $TC qdisc del dev $IFACE handle ffff: ingress 2>/dev/null
+    $TC qdisc add dev $IFACE handle ffff: ingress
+    $TC qdisc del dev $DEV root 2>/dev/null
+    $TC qdisc add dev $DEV root $( get_stab_string ) cake bandwidth ${DOWNLINK}kbit $( get_cake_lla_string ) ${INGRESS_CAKE_OPTS} ${IQDISC_OPTS}
+
+    $IP link set dev $DEV up
+
+    # redirect all IP packets arriving in $IFACE to ifb0
+
+    $TC filter add dev $IFACE parent ffff: protocol all prio 10 u32 \
+	match u32 0 0 flowid 1:1 action mirred egress redirect dev $DEV
+}
+
+sqm_start() {
+    [ -n "$IFACE" ] || return 1
+    do_modules
+    verify_qdisc $QDISC "cake" || return 1
+    sqm_debug "Starting ${SCRIPT}"
+
+    [ -z "$DEV" ] && DEV=$( get_ifb_for_if ${IFACE} )
+
+
+    if [ "${UPLINK}" -ne 0 ];
+    then
+        egress
+        sqm_debug "egress shaping activated"
+    else
+        sqm_debug "egress shaping deactivated"
+        $TC qdisc del dev ${IFACE} root 2> /dev/null
+    fi
+    if [ "${DOWNLINK}" -ne 0 ];
+    then
+	verify_qdisc ingress "ingress" || return 1
+        ingress
+        sqm_debug "ingress shaping activated"
+    else
+        sqm_debug "ingress shaping deactivated"
+        $TC qdisc del dev ${DEV} root 2> /dev/null
+        $TC qdisc del dev ${IFACE} ingress 2> /dev/null
+    fi
+    return 0
+}
diff --git a/net/sqm-scripts-extra/src/test_WAN_triple-isolate__piece_of_cake.qos.help b/net/sqm-scripts-extra/src/test_WAN_triple-isolate__piece_of_cake.qos.help
new file mode 100644
index 000000000..72df5099e
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_WAN_triple-isolate__piece_of_cake.qos.help
@@ -0,0 +1,10 @@
+test_WAN_triple-isolate__piece_of_cake.qos (Cero3 Shaper)
+
+Abstract:
+This is a one band cake and ipv6 enabled shaping script for Ethernet gateways. 
+This exists for the purpose of testing cake's different isolation options, 
+specifically the non-directional triple-isolate feature that promises to finally 
+tackle the bit-torrent hole in simple.qos. 
+This specific version is supposed to be used on WAN interfaces: 
+ the script's ingress direction equals the internet/WAN download direction 
+ the script's egress direction equals the internet/WAN upload direction
diff --git a/net/sqm-scripts-extra/src/test_triple_isolated_llt_cake.qos b/net/sqm-scripts-extra/src/test_triple_isolated_llt_cake.qos
new file mode 100644
index 000000000..df17b393f
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_triple_isolated_llt_cake.qos
@@ -0,0 +1,82 @@
+#!/bin/sh
+################################################################################
+# test_triple_isolated_llt_cake.qos
+# One bin cake shaper for ethernet gateways 
+# using cake qdisc with triple-isolate and diffserv-llt (Latency-Loss-Tradeoff)
+#
+################################################################################
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+#  Copyright (C) 2012-2016
+#    Michael D. Taht, Toke Høiland-Jørgensen, Sebastian Moeller
+#
+################################################################################
+
+. ${SQM_LIB_DIR}/defaults.sh
+
+################################################################################
+
+
+# this will only work with cake as qdisc...
+QDISC=cake
+
+
+# to keep this as simple as possible we ignore the *_CAKE_OPTS from defaults.sh
+INGRESS_CAKE_OPTS="diffserv-llt triple-isolate"
+EGRESS_CAKE_OPTS="diffserv-llt triple-isolate"
+
+
+egress() {
+    sqm_debug "egress"
+    $TC qdisc del dev $IFACE root 2>/dev/null
+    $TC qdisc add dev $IFACE root $( get_stab_string ) cake bandwidth ${UPLINK}kbit $( get_cake_lla_string ) ${EGRESS_CAKE_OPTS} ${EQDISC_OPTS}
+}
+
+
+ingress() {
+    sqm_debug "ingress"
+    $TC qdisc del dev $IFACE handle ffff: ingress 2>/dev/null
+    $TC qdisc add dev $IFACE handle ffff: ingress
+    $TC qdisc del dev $DEV root 2>/dev/null
+    $TC qdisc add dev $DEV root $( get_stab_string ) cake bandwidth ${DOWNLINK}kbit $( get_cake_lla_string ) ${INGRESS_CAKE_OPTS} ${IQDISC_OPTS}
+
+    $IP link set dev $DEV up
+
+    # redirect all IP packets arriving in $IFACE to ifb0
+
+    $TC filter add dev $IFACE parent ffff: protocol all prio 10 u32 \
+	match u32 0 0 flowid 1:1 action mirred egress redirect dev $DEV
+}
+
+sqm_start() {
+    [ -n "$IFACE" ] || return 1
+    do_modules
+    verify_qdisc $QDISC "cake" || return 1
+    sqm_debug "Starting ${SCRIPT}"
+
+    [ -z "$DEV" ] && DEV=$( get_ifb_for_if ${IFACE} )
+
+
+    if [ "${UPLINK}" -ne 0 ];
+    then
+        egress
+        sqm_debug "egress shaping activated"
+    else
+        sqm_debug "egress shaping deactivated"
+        $TC qdisc del dev ${IFACE} root 2> /dev/null
+    fi
+    if [ "${DOWNLINK}" -ne 0 ];
+    then
+	verify_qdisc ingress "ingress" || return 1
+        ingress
+        sqm_debug "ingress shaping activated"
+    else
+        sqm_debug "ingress shaping deactivated"
+        $TC qdisc del dev ${DEV} root 2> /dev/null
+        $TC qdisc del dev ${IFACE} ingress 2> /dev/null
+    fi
+    return 0
+}
diff --git a/net/sqm-scripts-extra/src/test_triple_isolated_llt_cake.qos.help b/net/sqm-scripts-extra/src/test_triple_isolated_llt_cake.qos.help
new file mode 100644
index 000000000..06ffdad79
--- /dev/null
+++ b/net/sqm-scripts-extra/src/test_triple_isolated_llt_cake.qos.help
@@ -0,0 +1,3 @@
+Cake qdisc with triple-isolate and diffserv-llt (Latency-Loss-Tradeoff)
+options as the shaper and fq_codel as leaf qdisc. This script requires
+that cake is selected as qdisc.