1BEGIN { 2 dmax=100 3 if (!(linespeed > 0)) linespeed = 128 4 FS=":" 5 n = 0 6} 7 8($1 != "") { 9 n++ 10 class[n] = $1 11 prio[n] = $2 12 avgrate[n] = ($3 * linespeed / 100) 13 pktsize[n] = $4 14 delay[n] = $5 15 maxrate[n] = ($6 * linespeed / 100) 16 qdisc[n] = $7 17 filter[n] = $8 18} 19 20END { 21 allocated = 0 22 maxdelay = 0 23 24 for (i = 1; i <= n; i++) { 25 # set defaults 26 if (!(pktsize[i] > 0)) pktsize[i] = 1500 27 if (!(prio[i] > 0)) prio[i] = 1 28 29 allocated += avgrate[i] 30 sum_prio += prio[i] 31 if ((avgrate[i] > 0) && !(delay[i] > 0)) { 32 sum_rtprio += prio[i] 33 } 34 } 35 36 # allocation of m1 in rt classes: 37 # sum(d * m1) must not exceed dmax * (linespeed - allocated) 38 dmax = 0 39 for (i = 1; i <= n; i++) { 40 if (avgrate[i] > 0) { 41 rtm2[i] = avgrate[i] 42 if (delay[i] > 0) { 43 d[i] = delay[i] 44 } else { 45 d[i] = 2 * pktsize[i] * 1000 / (linespeed * 1024) 46 if (d[i] > dmax) dmax = d[i] 47 } 48 } 49 } 50 51 ds_avail = dmax * (linespeed - allocated) 52 for (i = 1; i <= n; i++) { 53 lsm1[i] = 0 54 rtm1[i] = 0 55 lsm2[i] = linespeed * prio[i] / sum_prio 56 if ((avgrate[i] > 0) && (d[i] > 0)) { 57 if (!(delay[i] > 0)) { 58 ds = ds_avail * prio[i] / sum_rtprio 59 ds_avail -= ds 60 rtm1[i] = rtm2[i] + ds/d[i] 61 } 62 lsm1[i] = rtm1[i] 63 } 64 else { 65 d[i] = 0 66 } 67 } 68 69 # main qdisc 70 for (i = 1; i <= n; i++) { 71 printf "tc class add dev "device" parent 1:1 classid 1:"class[i]"0 hfsc" 72 if (rtm1[i] > 0) { 73 printf " rt m1 " int(rtm1[i]) "kbit d " int(d[i] * 1000) "us m2 " int(rtm2[i])"kbit" 74 } 75 printf " ls m1 " int(lsm1[i]) "kbit d " int(d[i] * 1000) "us m2 " int(lsm2[i]) "kbit" 76 print " ul rate " int(maxrate[i]) "kbit" 77 } 78 79 # leaf qdisc 80 avpkt = 1200 81 for (i = 1; i <= n; i++) { 82 print "tc qdisc add dev "device" parent 1:"class[i]"0 handle "class[i]"00: fq_codel limit 800 quantum 300 noecn" 83 } 84 85 # filter rule 86 for (i = 1; i <= n; i++) { 87 filter_cmd = "tc filter add dev "device" parent 1: prio %d handle %s fw flowid 1:%d0\n"; 88 if (direction == "up") { 89 filter_1 = sprintf("0x%x0/0xf0", class[i]) 90 filter_2 = sprintf("0x0%x/0x0f", class[i]) 91 } else { 92 filter_1 = sprintf("0x0%x/0x0f", class[i]) 93 filter_2 = sprintf("0x%x0/0xf0", class[i]) 94 } 95 96 printf filter_cmd, class[i] * 2, filter_1, class[i] 97 printf filter_cmd, class[i] * 2 + 1, filter_2, class[i] 98 99 filterc=1 100 if (filter[i] != "") { 101 print " tc filter add dev "device" parent "class[i]"00: handle "filterc"0 "filter[i] 102 filterc=filterc+1 103 } 104 } 105} 106 107