release/src/router/iproute2/examples/diffserv/Edge31-ca-u32

   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 3.1)
   9 #
  10 # The colors are defined using the Diffserv Fields
  11 #path to various utilities;
  12 #change to reflect yours.
  13 #
  14 IPROUTE=/usr/src/iproute2-current
  15 TC=$IPROUTE/tc/tc
  16 IP=$IPROUTE/ip/ip
  17 INDEV=eth0
  18 EGDEV="dev eth1"
  19 CIR1=1500kbit
  20 CIR2=1000kbit
  21
  22 #The CBS is about 60 MTU sized packets
  23 CBS1=90k
  24 CBS2=90k
  25
  26 ############################################################
  27 #
  28 # install the ingress qdisc on the ingress interface
  29 $TC qdisc add dev $INDEV handle ffff: ingress
  30 ############################################################
  31 #
  32 # Create u32 filters
  33 $TC filter add dev $INDEV parent ffff: protocol ip prio 4 handle 1: u32 \
  34 divisor 1
  35 ############################################################
  36
  37 # The meters: Note that we have shared meters in this case as identified
  38 # by the index parameter
  39 meter1=" police index 1 rate $CIR1 burst $CBS1 "
  40 meter2=" police index 2 rate $CIR2 burst $CBS1 "
  41 meter3=" police index 3 rate $CIR2 burst $CBS2 "
  42 meter4=" police index 4 rate $CIR1 burst $CBS2 "
  43 meter5=" police index 5 rate $CIR1 burst $CBS2 "
  44
  45 # All packets are marked with a tcindex value which is used on the egress
  46 # tcindex 1 maps to AF41, 2->AF42, 3->AF43, 4->BE
  47
  48 # *********************** AF41 ***************************
  49 #AF41 (DSCP 0x22) is passed on with a tcindex value 1
  50 #if it doesnt exceed its CIR/CBS
  51 #policer 1  is used.
  52 #
  53 $TC filter add dev $INDEV parent ffff: protocol ip prio 4 u32 \
  54 match ip tos 0x88 0xfc \
  55 $meter1 \
  56 continue flowid :1
  57 #
  58 # if it exceeds the above but not the extra rate/burst below, it gets a
  59 # tcindex value  of 2
  60 # policer 2 is used
  61 #
  62 $TC filter add dev $INDEV parent ffff: protocol ip prio 5 u32 \
  63 match ip tos 0x88 0xfc \
  64 $meter2 \
  65 continue flowid :2
  66 #
  67 # if it exceeds the above but not the rule below, it gets a tcindex value
  68 # of 3 (policer 3)
  69 #
  70 $TC filter add dev $INDEV parent ffff: protocol ip prio 6 u32 \
  71 match ip tos 0x88 0xfc \
  72 $meter3 \
  73 drop flowid :3
  74 #
  75
  76 # *********************** AF42 ***************************
  77 #AF42 (DSCP 0x24) from is passed on with a tcindex value 2
  78 #if it doesnt exceed its CIR/CBS
  79 #policer 2 is used. Note that this is shared with the AF41
  80 #
  81 #
  82 $TC filter add dev $INDEV parent ffff: protocol ip prio 5 u32 \
  83 match ip tos 0x90 0xfc \
  84 $meter2 \
  85 continue flowid :2
  86 #
  87 # if it exceeds the above but not the rule below, it gets a tcindex value
  88 # of 3 (policer 3)
  89 #
  90 $TC filter add dev $INDEV parent ffff: protocol ip prio 6 u32 \
  91 match ip tos 0x90 0xfc \
  92 $meter3 \
  93 drop flowid :3
  94 #
  95 # *********************** AF43 ***************************
  96 #
  97 #AF43 (DSCP 0x26) from is passed on with a tcindex value 3
  98 #if it doesnt exceed its CIR/CBS
  99 #policer 3 is used. Note that this is shared with the AF41 and AF42
 100 #
 101 $TC filter add dev $INDEV parent ffff: protocol ip prio 6 u32 \
 102 match ip tos 0x98 0xfc \
 103 $meter3 \
 104 drop flowid :3
 105 #
 106 # *********************** BE ***************************
 107 #
 108 # Anything else (not from the AF4*) gets discarded if it
 109 # exceeds 1Mbps and by default goes to BE if it doesnt
 110 # Note that the BE class is also used by the AF4* in the worst
 111 # case
 112 #
 113 $TC filter add dev $INDEV parent ffff: protocol ip prio 7 u32 \
 114 match ip src 0/0\
 115 $meter4 \
 116 drop flowid :4
 117
 118 ######################## Egress side ########################
 119
 120 # attach a dsmarker
 121 #
 122 $TC qdisc add $EGDEV handle 1:0 root dsmark indices 64
 123 #
 124 # values of the DSCP to change depending on the class
 125 #note that the ECN bits are masked out
 126 #
 127 #AF41 (0x88 is 0x22 shifted to the right by two bits)
 128 #
 129 $TC class change $EGDEV classid 1:1 dsmark mask 0x3 \
 130        value 0x88
 131 #AF42
 132 $TC class change $EGDEV classid 1:2 dsmark mask 0x3 \
 133        value 0x90
 134 #AF43
 135 $TC class change $EGDEV classid 1:3 dsmark mask 0x3 \
 136        value 0x98
 137 #BE
 138 $TC class change $EGDEV classid 1:3 dsmark mask 0x3 \
 139        value 0x0
 140 #
 141 #
 142 # The class mapping
 143 #
 144 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
 145           handle 1 tcindex classid 1:1
 146 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
 147           handle 2 tcindex  classid 1:2
 148 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
 149           handle 3 tcindex  classid 1:3
 150 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
 151           handle 4 tcindex  classid 1:4
 152 #
 153
 154 #
 155 echo "---- qdisc parameters Ingress  ----------"
 156 $TC qdisc ls dev $INDEV
 157 echo "---- Class parameters Ingress  ----------"
 158 $TC class ls dev $INDEV
 159 echo "---- filter parameters Ingress ----------"
 160 $TC filter ls dev $INDEV parent ffff:
 161
 162 echo "---- qdisc parameters Egress  ----------"
 163 $TC qdisc ls $EGDEV
 164 echo "---- Class parameters Egress  ----------"
 165 $TC class ls $EGDEV
 166 echo "---- filter parameters Egress ----------"
 167 $TC filter ls $EGDEV parent 1:0
 168 #
 169 #deleting the ingress qdisc
 170 #$TC qdisc del $INDEV ingress