|  | #! /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 |