parent
c6aa5d159d
commit
c993ad73be
@ -1,2 +1,2 @@ |
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#!/bin/sh |
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[ "$ACTION" = ifup ] && /usr/lib/qos.sh interface "$INTERFACE" | sh |
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[ "$ACTION" = ifup ] && /usr/lib/qos/generate.sh interface "$INTERFACE" | sh |
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@ -1,4 +1,4 @@ |
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#!/bin/sh |
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qos-stop |
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/usr/lib/qos.sh all | sh |
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/usr/lib/qos/generate.sh all | sh |
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@ -0,0 +1,101 @@ |
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BEGIN { |
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dmax=100 |
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if (!(linespeed > 0)) linespeed = 128 |
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FS=":" |
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n = 0 |
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} |
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($1 != "") { |
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n++ |
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class[n] = $1 |
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prio[n] = $2 |
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avgrate[n] = ($3 * linespeed / 100) |
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pktsize[n] = $4 |
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delay[n] = $5 |
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maxrate[n] = ($6 * linespeed / 100) |
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} |
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END { |
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allocated = 0 |
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maxdelay = 0 |
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for (i = 1; i <= n; i++) { |
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# set defaults |
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if (!(pktsize[i] > 0)) pktsize[i] = 1500 |
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if (!(prio[i] > 0)) prio[i] = 1 |
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allocated += avgrate[i] |
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sum_prio += prio[i] |
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if ((avgrate[i] > 0) && !(delay[i] > 0)) { |
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sum_rtprio += prio[i] |
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} |
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} |
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# allocation of m1 in rt classes: |
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# sum(d * m1) must not exceed dmax * (linespeed - allocated) |
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dmax = 0 |
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for (i = 1; i <= n; i++) { |
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if (avgrate[i] > 0) { |
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rtm2[i] = avgrate[i] |
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if (delay[i] > 0) { |
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d[i] = delay[i] |
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} else { |
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d[i] = 2 * pktsize[i] * 1000 / (linespeed * 1024) |
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if (d[i] > dmax) dmax = d[i] |
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} |
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} |
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} |
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ds_avail = dmax * (linespeed - allocated) |
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for (i = 1; i <= n; i++) { |
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lsm1[i] = 0 |
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rtm1[i] = 0 |
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lsm2[i] = linespeed * prio[i] / sum_prio |
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if ((avgrate[i] > 0) && (d[i] > 0)) { |
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if (!(delay[i] > 0)) { |
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ds = ds_avail * prio[i] / sum_rtprio |
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ds_avail -= ds |
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rtm1[i] = rtm2[i] + ds/d[i] |
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} |
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lsm1[i] = rtm1[i] |
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} |
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else { |
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d[i] = 0 |
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} |
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} |
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# main qdisc |
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for (i = 1; i <= n; i++) { |
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printf "tc class add dev "device" parent 1:1 classid 1:"class[i]"0 hfsc" |
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if (rtm1[i] > 0) { |
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printf " rt m1 " int(rtm1[i]) "kbit d " int(d[i] * 1000) "us m2 " int(rtm2[i])"kbit" |
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} |
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printf " ls m1 " int(lsm1[i]) "kbit d " int(d[i] * 1000) "us m2 " int(lsm2[i]) "kbit" |
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print " ul rate " int(maxrate[i]) "kbit" |
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} |
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# leaf qdisc |
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avpkt = 1200 |
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for (i = 1; i <= n; i++) { |
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ql = int((avgrate[i] + linespeed) * 1024 / (8 * pktsize[i])) |
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printf "tc qdisc add dev "device" parent 1:"class[i]"0 handle "class[i]"00: " |
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if (rtm1[i] > 0) { |
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# rt class - use sfq |
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print "sfq perturb 2 limit " ql |
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} else { |
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# non-rt class - use red |
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min = int(maxrate[i] * 1024 / 8 * 0.05) |
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if (min < avpkt) min = avpkt |
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dqb = 8 * min; |
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max = int(2.1*min) |
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rburst = int((1.5*min + max) / (3 * avpkt)) |
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print "red min " min " max " max " burst " rburst " avpkt " avpkt " limit " dqb " probability 0.04 ecn" |
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} |
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} |
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# filter rule |
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for (i = 1; i <= n; i++) { |
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print "tc filter add dev "device" parent 1: prio "class[i]" protocol ip handle "class[i]" fw flowid 1:"class[i] "0" |
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} |
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} |
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