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199 lines
5.8 KiB
Bash
199 lines
5.8 KiB
Bash
#! /bin/sh -x
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#
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# sample script on using the ingress capabilities using u32 classifier
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# This script tags tcindex based on metering on the ingress
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# interface the result is used for fast classification and re-marking
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# on the egress interface
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# This is an example of a color aware mode marker with PIR configured
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# based on draft-wahjak-mcm-00.txt (section 3.2)
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#
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# The colors are defined using the Diffserv Fields
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#path to various utilities;
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#change to reflect yours.
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#
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IPROUTE=/root/DS-6-beta/iproute2-990530-dsing
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TC=$IPROUTE/tc/tc
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IP=$IPROUTE/ip/ip
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IPCHAINS=/root/DS-6-beta/ipchains-1.3.9/ipchains
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INDEV=eth2
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EGDEV="dev eth1"
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CIR1=1000kbit
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CIR2=500kbit
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# the PIR is what is in excess of the CIR
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PIR1=1000kbit
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PIR2=500kbit
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#The CBS is about 60 MTU sized packets
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CBS1=90k
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CBS2=90k
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#the EBS is about 20 max sized packets
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EBS1=30k
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EBS2=30k
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# The meters: Note that we have shared meters in this case as identified
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# by the index parameter
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meter1=" police index 1 rate $CIR1 burst $CBS1 "
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meter1a=" police index 2 rate $PIR1 burst $EBS1 "
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meter2=" police index 3 rate $CIR2 burst $CBS1 "
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meter2a=" police index 4 rate $PIR2 burst $EBS1 "
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meter3=" police index 5 rate $CIR2 burst $CBS2 "
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meter3a=" police index 6 rate $PIR2 burst $EBS2 "
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meter4=" police index 7 rate $CIR1 burst $CBS2 "
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############################################################
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#
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# install the ingress qdisc on the ingress interface
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$TC qdisc add dev $INDEV handle ffff: ingress
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############################################################
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#
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# All packets are marked with a tcindex value which is used on the egress
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# tcindex 1 maps to AF41, 2->AF42, 3->AF43, 4->BE
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#
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# *********************** AF41 ***************************
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#AF41 (DSCP 0x22) from is passed on with a tcindex value 1
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#if it doesnt exceed its CIR/CBS + PIR/EBS
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#policer 1 is used.
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#
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$TC filter add dev $INDEV parent ffff: protocol ip prio 1 u32 \
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match ip tos 0x88 0xfc \
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$meter1 \
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continue flowid :1
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$TC filter add dev $INDEV parent ffff: protocol ip prio 2 u32 \
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match ip tos 0x88 0xfc \
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$meter1a \
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continue flowid :1
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#
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# if it exceeds the above but not the extra rate/burst below, it gets a
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# tcindex value of 2
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# policer 2 is used
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#
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$TC filter add dev $INDEV parent ffff: protocol ip prio 3 u32 \
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match ip tos 0x88 0xfc \
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$meter2 \
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continue flowid :2
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$TC filter add dev $INDEV parent ffff: protocol ip prio 4 u32 \
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match ip tos 0x88 0xfc \
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$meter2a \
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continue flowid :2
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#
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# if it exceeds the above but not the rule below, it gets a tcindex value
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# of 3 (policer 3)
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#
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$TC filter add dev $INDEV parent ffff: protocol ip prio 5 u32 \
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match ip tos 0x88 0xfc \
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$meter3 \
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continue flowid :3
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$TC filter add dev $INDEV parent ffff: protocol ip prio 6 u32 \
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match ip tos 0x88 0xfc \
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$meter3a \
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drop flowid :3
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#
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# *********************** AF42 ***************************
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#AF42 (DSCP 0x24) from is passed on with a tcindex value 2
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#if it doesnt exceed its CIR/CBS + PIR/EBS
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#policer 2 is used. Note that this is shared with the AF41
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#
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#
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$TC filter add dev $INDEV parent ffff: protocol ip prio 8 u32 \
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match ip tos 0x90 0xfc \
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$meter2 \
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continue flowid :2
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$TC filter add dev $INDEV parent ffff: protocol ip prio 9 u32 \
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match ip tos 0x90 0xfc \
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$meter2a \
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continue flowid :2
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#
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# if it exceeds the above but not the rule below, it gets a tcindex value
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# of 3 (policer 3)
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#
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$TC filter add dev $INDEV parent ffff: protocol ip prio 10 u32 \
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match ip tos 0x90 0xfc \
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$meter3 \
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continue flowid :3
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$TC filter add dev $INDEV parent ffff: protocol ip prio 11 u32 \
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match ip tos 0x90 0xfc \
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$meter3a \
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drop flowid :3
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#
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# *********************** AF43 ***************************
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#
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#AF43 (DSCP 0x26) from is passed on with a tcindex value 3
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#if it doesnt exceed its CIR/CBS + PIR/EBS
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#policer 3 is used. Note that this is shared with the AF41 and AF42
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#
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$TC filter add dev $INDEV parent ffff: protocol ip prio 13 u32 \
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match ip tos 0x98 0xfc \
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$meter3 \
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continue flowid :3
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$TC filter add dev $INDEV parent ffff: protocol ip prio 14 u32 \
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match ip tos 0x98 0xfc \
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$meter3a \
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drop flowid :3
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#
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## *********************** BE ***************************
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##
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## Anything else (not from the AF4*) gets discarded if it
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## exceeds 1Mbps and by default goes to BE if it doesnt
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## Note that the BE class is also used by the AF4* in the worst
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## case
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##
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$TC filter add dev $INDEV parent ffff: protocol ip prio 16 u32 \
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match ip src 0/0\
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$meter4 \
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drop flowid :4
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######################## Egress side ########################
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# attach a dsmarker
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#
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$TC qdisc add $EGDEV handle 1:0 root dsmark indices 64
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#
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# values of the DSCP to change depending on the class
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#note that the ECN bits are masked out
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#
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#AF41 (0x88 is 0x22 shifted to the right by two bits)
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#
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$TC class change $EGDEV classid 1:1 dsmark mask 0x3 \
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value 0x88
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#AF42
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$TC class change $EGDEV classid 1:2 dsmark mask 0x3 \
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value 0x90
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#AF43
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$TC class change $EGDEV classid 1:3 dsmark mask 0x3 \
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value 0x98
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#BE
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$TC class change $EGDEV classid 1:3 dsmark mask 0x3 \
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value 0x0
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#
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#
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# The class mapping
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#
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$TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
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handle 1 tcindex classid 1:1
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$TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
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handle 2 tcindex classid 1:2
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$TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
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handle 3 tcindex classid 1:3
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$TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
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handle 4 tcindex classid 1:4
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#
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#
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echo "---- qdisc parameters Ingress ----------"
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$TC qdisc ls dev $INDEV
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echo "---- Class parameters Ingress ----------"
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$TC class ls dev $INDEV
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echo "---- filter parameters Ingress ----------"
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$TC filter ls dev $INDEV parent ffff:
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echo "---- qdisc parameters Egress ----------"
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$TC qdisc ls $EGDEV
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echo "---- Class parameters Egress ----------"
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$TC class ls $EGDEV
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echo "---- filter parameters Egress ----------"
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$TC filter ls $EGDEV parent 1:0
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#
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#deleting the ingress qdisc
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#$TC qdisc del $INDEV ingress
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