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1#! /bin/sh -x
2#
3# sample script on using the ingress capabilities using u32 classifier
4# This script tags tcindex based on metering on the ingress
5# interface the result is used for fast classification and re-marking
6# on the egress interface
7# This is an example of a color aware mode marker with PIR configured
8# based on draft-wahjak-mcm-00.txt (section 3.2)
9#
10# The colors are defined using the Diffserv Fields
11#path to various utilities;
12#change to reflect yours.
13#
14IPROUTE=/root/DS-6-beta/iproute2-990530-dsing
15TC=$IPROUTE/tc/tc
16IP=$IPROUTE/ip/ip
17IPCHAINS=/root/DS-6-beta/ipchains-1.3.9/ipchains
18INDEV=eth2
19EGDEV="dev eth1"
20CIR1=1000kbit
21CIR2=500kbit
22# the PIR is what is in excess of the CIR
23PIR1=1000kbit
24PIR2=500kbit
25
26#The CBS is about 60 MTU sized packets
27CBS1=90k
28CBS2=90k
29#the EBS is about 20 max sized packets
30EBS1=30k
31EBS2=30k
32
33# The meters: Note that we have shared meters in this case as identified
34# by the index parameter
35meter1=" police index 1 rate $CIR1 burst $CBS1 "
36meter1a=" police index 2 rate $PIR1 burst $EBS1 "
37meter2=" police index 3 rate $CIR2 burst $CBS1 "
38meter2a=" police index 4 rate $PIR2 burst $EBS1 "
39meter3=" police index 5 rate $CIR2 burst $CBS2 "
40meter3a=" police index 6 rate $PIR2 burst $EBS2 "
41meter4=" police index 7 rate $CIR1 burst $CBS2 "
42
43############################################################
44#
45# install the ingress qdisc on the ingress interface
46$TC qdisc add dev $INDEV handle ffff: ingress
47############################################################
48#
49# All packets are marked with a tcindex value which is used on the egress
50# tcindex 1 maps to AF41, 2->AF42, 3->AF43, 4->BE
51#
52# *********************** AF41 ***************************
53#AF41 (DSCP 0x22) from is passed on with a tcindex value 1
54#if it doesnt exceed its CIR/CBS + PIR/EBS
55#policer 1  is used.
56#
57$TC filter add dev $INDEV parent ffff: protocol ip prio 1 u32 \
58match ip tos 0x88 0xfc \
59$meter1 \
60continue flowid :1
61$TC filter add dev $INDEV parent ffff: protocol ip prio 2 u32 \
62match ip tos 0x88 0xfc \
63$meter1a \
64continue flowid :1
65#
66# if it exceeds the above but not the extra rate/burst below, it gets a
67# tcindex value  of 2
68# policer 2 is used
69#
70$TC filter add dev $INDEV parent ffff: protocol ip prio 3 u32 \
71match ip tos 0x88 0xfc \
72$meter2 \
73continue flowid :2
74$TC filter add dev $INDEV parent ffff: protocol ip prio 4 u32 \
75match ip tos 0x88 0xfc \
76$meter2a \
77continue flowid :2
78#
79# if it exceeds the above but not the rule below, it gets a tcindex value
80# of 3 (policer 3)
81#
82$TC filter add dev $INDEV parent ffff: protocol ip prio 5 u32 \
83match ip tos 0x88 0xfc \
84$meter3 \
85continue flowid :3
86$TC filter add dev $INDEV parent ffff: protocol ip prio 6 u32 \
87match ip tos 0x88 0xfc \
88$meter3a \
89drop flowid :3
90#
91# *********************** AF42 ***************************
92#AF42 (DSCP 0x24) from is passed on with a tcindex value 2
93#if it doesnt exceed its CIR/CBS + PIR/EBS
94#policer 2 is used. Note that this is shared with the AF41
95#
96#
97$TC filter add dev $INDEV parent ffff: protocol ip prio 8 u32 \
98match ip tos 0x90 0xfc \
99$meter2 \
100continue flowid :2
101$TC filter add dev $INDEV parent ffff: protocol ip prio 9 u32 \
102match ip tos 0x90 0xfc \
103$meter2a \
104continue flowid :2
105#
106# if it exceeds the above but not the rule below, it gets a tcindex value
107# of 3 (policer 3)
108#
109$TC filter add dev $INDEV parent ffff: protocol ip prio 10 u32 \
110match ip tos 0x90 0xfc \
111$meter3 \
112continue flowid :3
113$TC filter add dev $INDEV parent ffff: protocol ip prio 11 u32 \
114match ip tos 0x90 0xfc \
115$meter3a \
116drop flowid :3
117
118#
119# *********************** AF43 ***************************
120#
121#AF43 (DSCP 0x26) from is passed on with a tcindex value 3
122#if it doesnt exceed its CIR/CBS + PIR/EBS
123#policer 3 is used. Note that this is shared with the AF41 and AF42
124#
125$TC filter add dev $INDEV parent ffff: protocol ip prio 13 u32 \
126match ip tos 0x98 0xfc \
127$meter3 \
128continue flowid :3
129$TC filter add dev $INDEV parent ffff: protocol ip prio 14 u32 \
130match ip tos 0x98 0xfc \
131$meter3a \
132drop flowid :3
133#
134## *********************** BE ***************************
135##
136## Anything else (not from the AF4*) gets discarded if it
137## exceeds 1Mbps and by default goes to BE if it doesnt
138## Note that the BE class is also used by the AF4* in the worst
139## case
140##
141$TC filter add dev $INDEV parent ffff: protocol ip prio 16 u32 \
142match ip src 0/0\
143$meter4 \
144drop flowid :4
145
146######################## Egress side ########################
147
148# attach a dsmarker
149#
150$TC qdisc add $EGDEV handle 1:0 root dsmark indices 64
151#
152# values of the DSCP to change depending on the class
153#note that the ECN bits are masked out
154#
155#AF41 (0x88 is 0x22 shifted to the right by two bits)
156#
157$TC class change $EGDEV classid 1:1 dsmark mask 0x3 \
158       value 0x88
159#AF42
160$TC class change $EGDEV classid 1:2 dsmark mask 0x3 \
161       value 0x90
162#AF43
163$TC class change $EGDEV classid 1:3 dsmark mask 0x3 \
164       value 0x98
165#BE
166$TC class change $EGDEV classid 1:3 dsmark mask 0x3 \
167       value 0x0
168#
169#
170# The class mapping
171#
172$TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
173          handle 1 tcindex classid 1:1
174$TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
175          handle 2 tcindex  classid 1:2
176$TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
177          handle 3 tcindex  classid 1:3
178$TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
179          handle 4 tcindex  classid 1:4
180#
181
182#
183echo "---- qdisc parameters Ingress  ----------"
184$TC qdisc ls dev $INDEV
185echo "---- Class parameters Ingress  ----------"
186$TC class ls dev $INDEV
187echo "---- filter parameters Ingress ----------"
188$TC filter ls dev $INDEV parent ffff:
189
190echo "---- qdisc parameters Egress  ----------"
191$TC qdisc ls $EGDEV
192echo "---- Class parameters Egress  ----------"
193$TC class ls $EGDEV
194echo "---- filter parameters Egress ----------"
195$TC filter ls $EGDEV parent 1:0
196#
197#deleting the ingress qdisc
198#$TC qdisc del $INDEV ingress
199