#! /bin/sh -x

#

# sample script on using the ingress capabilities

# This script just tags on the ingress interfac using Ipchains

# the result is used for fast classification and re-marking

# on the egress interface

#

#path to various utilities;

#change to reflect yours.

#

IPROUTE=/root/DS-6-beta/iproute2-990530-dsing

TC=$IPROUTE/tc/tc

IP=$IPROUTE/ip/ip

IPCHAINS=/root/DS-6-beta/ipchains-1.3.9/ipchains

INDEV=eth2

EGDEV="dev eth1"

#

# tag all incoming packets from host 10.2.0.24 to value 1

# tag all incoming packets from host 10.2.0.3 to value 2

# tag the rest of incoming packets from subnet 10.2.0.0/24 to value 3

#These values are used in the egress

#

############################################################ 

$IPCHAINS -A input -s 10.2.0.4/24 -m 3

$IPCHAINS -A input -i $INDEV -s 10.2.0.24 -m 1

$IPCHAINS -A input -i $INDEV -s 10.2.0.3 -m 2

######################## Egress side ########################

# attach a dsmarker

#

$TC qdisc add $EGDEV handle 1:0 root dsmark indices 64 set_tc_index

#

# values of the DSCP to change depending on the class

#

#becomes EF

$TC class change $EGDEV classid 1:1 dsmark mask 0x3 \

       value 0xb8

#becomes AF11

$TC class change $EGDEV classid 1:2 dsmark mask 0x3 \

       value 0x28

#becomes AF21

$TC class change $EGDEV classid 1:3 dsmark mask 0x3 \

       value 0x48

#

#

# The class mapping

#

$TC filter add $EGDEV parent 1:0 protocol ip prio 4 handle 1 fw classid 1:1

$TC filter add $EGDEV parent 1:0 protocol ip prio 4 handle 2 fw classid 1:2

$TC filter add $EGDEV parent 1:0 protocol ip prio 4 handle 3 fw classid 1:3

#

#

echo "---- qdisc parameters Ingress  ----------"

$TC qdisc ls dev $INDEV

echo "---- Class parameters Ingress  ----------"

$TC class ls dev $INDEV

echo "---- filter parameters Ingress ----------"

$TC filter ls dev $INDEV parent 1:0

echo "---- qdisc parameters Egress  ----------"

$TC qdisc ls $EGDEV

echo "---- Class parameters Egress  ----------"

$TC class ls $EGDEV

echo "---- filter parameters Egress ----------"

$TC filter ls $EGDEV parent 1:0