release/src/router/iproute2/examples/diffserv/Edge32-cb-chains

   1 #! /bin/sh -x
   2 #
   3 # sample script on using the ingress capabilities
   4 # This script fwmark tags(IPchains) 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 blind mode marker with no PIR configured
   8 # based on draft-wahjak-mcm-00.txt (section 3.1)
   9 #
  10 #path to various utilities;
  11 #change to reflect yours.
  12 #
  13 IPROUTE=/root/DS-6-beta/iproute2-990530-dsing
  14 TC=$IPROUTE/tc/tc
  15 IP=$IPROUTE/ip/ip
  16 IPCHAINS=/root/DS-6-beta/ipchains-1.3.9/ipchains
  17 INDEV=eth2
  18 EGDEV="dev eth1"
  19 CIR1=1500kbit
  20 CIR2=500kbit
  21
  22 #The CBS is about 60 MTU sized packets
  23 CBS1=90k
  24 CBS2=90k
  25
  26 meter1="police rate $CIR1 burst $CBS1 "
  27 meter1a="police rate $CIR2 burst $CBS1 "
  28 meter2="police rate $CIR1 burst $CBS2 "
  29 meter2a="police rate $CIR2 burst $CBS2 "
  30 meter3="police rate $CIR2 burst $CBS1 "
  31 meter3a="police rate $CIR2 burst $CBS1 "
  32 meter4="police rate $CIR2 burst $CBS2 "
  33 meter5="police rate $CIR1 burst $CBS2 "
  34 #
  35 # tag the rest of incoming packets from subnet 10.2.0.0/24 to fw value 1
  36 # tag all incoming packets from any other subnet to fw tag 2
  37 ############################################################
  38 $IPCHAINS -A input -i $INDEV -s 0/0 -m 2
  39 $IPCHAINS -A input -i $INDEV -s 10.2.0.0/24 -m 1
  40 #
  41 ############################################################
  42 # install the ingress qdisc on the ingress interface
  43 $TC qdisc add dev $INDEV handle ffff: ingress
  44 #
  45 ############################################################
  46
  47 # All packets are marked with a tcindex value which is used on the egress
  48 # tcindex 1 maps to AF41, 2->AF42, 3->AF43, 4->BE
  49 #
  50 ############################################################
  51 #
  52 # anything with fw tag of 1 is passed on with a tcindex value 1
  53 #if it doesnt exceed its allocated rate (CIR/CBS)
  54 #
  55 $TC filter add dev $INDEV parent ffff: protocol ip prio 1 handle 1 fw \
  56 $meter1 \
  57 continue flowid 4:1
  58 $TC filter add dev $INDEV parent ffff: protocol ip prio 2 handle 1 fw \
  59 $meter1a \
  60 continue flowid 4:1
  61 #
  62 # if it exceeds the above but not the extra rate/burst below, it gets a
  63 #tcindex value  of 2
  64 #
  65 $TC filter add dev $INDEV parent ffff: protocol ip prio 3 handle 1 fw \
  66 $meter2 \
  67 continue flowid 4:2
  68 $TC filter add dev $INDEV parent ffff: protocol ip prio 4 handle 1 fw \
  69 $meter2a \
  70 continue flowid 4:2
  71 #
  72 # if it exceeds the above but not the rule below, it gets a tcindex value
  73 # of 3
  74 #
  75 $TC filter add dev $INDEV parent ffff: protocol ip prio 5 handle 1 fw \
  76 $meter3 \
  77 continue flowid 4:3
  78 $TC filter add dev $INDEV parent ffff: protocol ip prio 6 handle 1 fw \
  79 $meter3a \
  80 drop flowid 4:3
  81 #
  82 # Anything else (not from the subnet 10.2.0.24/24) gets discarded if it
  83 # exceeds 1Mbps and by default goes to BE if it doesnt
  84 #
  85 $TC filter add dev $INDEV parent ffff: protocol ip prio 7 handle 2 fw \
  86 $meter5 \
  87 drop flowid 4:4
  88
  89
  90 ######################## Egress side ########################
  91
  92
  93 # attach a dsmarker
  94 #
  95 $TC qdisc add $EGDEV handle 1:0 root dsmark indices 64
  96 #
  97 # values of the DSCP to change depending on the class
  98 #note that the ECN bits are masked out
  99 #
 100 #AF41 (0x88 is 0x22 shifted to the right by two bits)
 101 #
 102 $TC class change $EGDEV classid 1:1 dsmark mask 0x3 \
 103        value 0x88
 104 #AF42
 105 $TC class change $EGDEV classid 1:2 dsmark mask 0x3 \
 106        value 0x90
 107 #AF43
 108 $TC class change $EGDEV classid 1:3 dsmark mask 0x3 \
 109        value 0x98
 110 #BE
 111 $TC class change $EGDEV classid 1:4 dsmark mask 0x3 \
 112        value 0x0
 113 #
 114 #
 115 # The class mapping (using tcindex; could easily have
 116 # replaced it with the fw classifier instead)
 117 #
 118 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
 119           handle 1 tcindex classid 1:1
 120 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
 121           handle 2 tcindex  classid 1:2
 122 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
 123           handle 3 tcindex  classid 1:3
 124 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \
 125           handle 4 tcindex  classid 1:4
 126 #
 127
 128 #
 129 echo "---- qdisc parameters Ingress  ----------"
 130 $TC qdisc ls dev $INDEV
 131 echo "---- Class parameters Ingress  ----------"
 132 $TC class ls dev $INDEV
 133 echo "---- filter parameters Ingress ----------"
 134 $TC filter ls dev $INDEV parent ffff:
 135
 136 echo "---- qdisc parameters Egress  ----------"
 137 $TC qdisc ls $EGDEV
 138 echo "---- Class parameters Egress  ----------"
 139 $TC class ls $EGDEV
 140 echo "---- filter parameters Egress ----------"
 141 $TC filter ls $EGDEV parent 1:0
 142 #
 143 #deleting the ingress qdisc
 144 #$TC qdisc del $INDEV ingress