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=1000kbit 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 meter2="police rate $CIR1 burst $CBS2 " 28 meter3="police rate $CIR2 burst $CBS1 " 29 meter4="police rate $CIR2 burst $CBS2 " 30 meter5="police rate $CIR2 burst $CBS2 " 31 # 32 # tag the rest of incoming packets from subnet 10.2.0.0/24 to fw value 1 33 # tag all incoming packets from any other subnet to fw tag 2 34 ############################################################ 35 $IPCHAINS -A input -i $INDEV -s 0/0 -m 2 36 $IPCHAINS -A input -i $INDEV -s 10.2.0.0/24 -m 1 37 # 38 ############################################################ 39 # install the ingress qdisc on the ingress interface 40 $TC qdisc add dev $INDEV handle ffff: ingress 41 # 42 ############################################################ 43 44 # All packets are marked with a tcindex value which is used on the egress 45 # tcindex 1 maps to AF41, 2->AF42, 3->AF43, 4->BE 46 # 47 ############################################################ 48 # 49 # anything with fw tag of 1 is passed on with a tcindex value 1 50 #if it doesnt exceed its allocated rate (CIR/CBS) 51 # 52 $TC filter add dev $INDEV parent ffff: protocol ip prio 4 handle 1 fw \ 53 $meter1 \ 54 continue flowid 4:1 55 # 56 # if it exceeds the above but not the extra rate/burst below, it gets a 57 #tcindex value of 2 58 # 59 $TC filter add dev $INDEV parent ffff: protocol ip prio 5 handle 1 fw \ 60 $meter2 \ 61 continue flowid 4:2 62 # 63 # if it exceeds the above but not the rule below, it gets a tcindex value 64 # of 3 65 # 66 $TC filter add dev $INDEV parent ffff: protocol ip prio 6 handle 1 fw \ 67 $meter3 \ 68 drop flowid 4:3 69 # 70 # Anything else (not from the subnet 10.2.0.24/24) gets discarded if it 71 # exceeds 1Mbps and by default goes to BE if it doesnt 72 # 73 $TC filter add dev $INDEV parent ffff: protocol ip prio 6 handle 2 fw \ 74 $meter5 \ 75 drop flowid 4:4 76 77 78 ######################## Egress side ######################## 79 80 81 # attach a dsmarker 82 # 83 $TC qdisc add $EGDEV handle 1:0 root dsmark indices 64 84 # 85 # values of the DSCP to change depending on the class 86 #note that the ECN bits are masked out 87 # 88 #AF41 (0x88 is 0x22 shifted to the right by two bits) 89 # 90 $TC class change $EGDEV classid 1:1 dsmark mask 0x3 \ 91 value 0x88 92 #AF42 93 $TC class change $EGDEV classid 1:2 dsmark mask 0x3 \ 94 value 0x90 95 #AF43 96 $TC class change $EGDEV classid 1:3 dsmark mask 0x3 \ 97 value 0x98 98 #BE 99 $TC class change $EGDEV classid 1:4 dsmark mask 0x3 \ 100 value 0x0 101 # 102 # 103 # The class mapping (using tcindex; could easily have 104 # replaced it with the fw classifier instead) 105 # 106 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \ 107 handle 1 tcindex classid 1:1 108 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \ 109 handle 2 tcindex classid 1:2 110 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \ 111 handle 3 tcindex classid 1:3 112 $TC filter add $EGDEV parent 1:0 protocol ip prio 1 \ 113 handle 4 tcindex classid 1:4 114 # 115 116 # 117 echo "---- qdisc parameters Ingress ----------" 118 $TC qdisc ls dev $INDEV 119 echo "---- Class parameters Ingress ----------" 120 $TC class ls dev $INDEV 121 echo "---- filter parameters Ingress ----------" 122 $TC filter ls dev $INDEV parent ffff: 123 124 echo "---- qdisc parameters Egress ----------" 125 $TC qdisc ls $EGDEV 126 echo "---- Class parameters Egress ----------" 127 $TC class ls $EGDEV 128 echo "---- filter parameters Egress ----------" 129 $TC filter ls $EGDEV parent 1:0 130 # 131 #deleting the ingress qdisc 132 #$TC qdisc del $INDEV ingress 133
