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-rw-r--r--package/qos-scripts/files/usr/lib/qos/tcrules.awk95
1 files changed, 95 insertions, 0 deletions
diff --git a/package/qos-scripts/files/usr/lib/qos/tcrules.awk b/package/qos-scripts/files/usr/lib/qos/tcrules.awk
new file mode 100644
index 000000000..a19b65192
--- /dev/null
+++ b/package/qos-scripts/files/usr/lib/qos/tcrules.awk
@@ -0,0 +1,95 @@
+BEGIN {
+ dmax=100
+ if (!(linespeed > 0)) linespeed = 128
+ FS=":"
+ n = 0
+}
+
+($1 != "") {
+ n++
+ class[n] = $1
+ prio[n] = $2
+ avgrate[n] = ($3 * linespeed / 100)
+ pktsize[n] = $4
+ delay[n] = $5
+ maxrate[n] = ($6 * linespeed / 100)
+ qdisc[n] = $7
+ filter[n] = $8
+}
+
+END {
+ allocated = 0
+ maxdelay = 0
+
+ for (i = 1; i <= n; i++) {
+ # set defaults
+ if (!(pktsize[i] > 0)) pktsize[i] = 1500
+ if (!(prio[i] > 0)) prio[i] = 1
+
+ allocated += avgrate[i]
+ sum_prio += prio[i]
+ if ((avgrate[i] > 0) && !(delay[i] > 0)) {
+ sum_rtprio += prio[i]
+ }
+ }
+
+ # allocation of m1 in rt classes:
+ # sum(d * m1) must not exceed dmax * (linespeed - allocated)
+ dmax = 0
+ for (i = 1; i <= n; i++) {
+ if (avgrate[i] > 0) {
+ rtm2[i] = avgrate[i]
+ if (delay[i] > 0) {
+ d[i] = delay[i]
+ } else {
+ d[i] = 2 * pktsize[i] * 1000 / (linespeed * 1024)
+ if (d[i] > dmax) dmax = d[i]
+ }
+ }
+ }
+
+ ds_avail = dmax * (linespeed - allocated)
+ for (i = 1; i <= n; i++) {
+ lsm1[i] = 0
+ rtm1[i] = 0
+ lsm2[i] = linespeed * prio[i] / sum_prio
+ if ((avgrate[i] > 0) && (d[i] > 0)) {
+ if (!(delay[i] > 0)) {
+ ds = ds_avail * prio[i] / sum_rtprio
+ ds_avail -= ds
+ rtm1[i] = rtm2[i] + ds/d[i]
+ }
+ lsm1[i] = rtm1[i]
+ }
+ else {
+ d[i] = 0
+ }
+ }
+
+ # main qdisc
+ for (i = 1; i <= n; i++) {
+ printf "tc class add dev "device" parent 1:1 classid 1:"class[i]"0 hfsc"
+ if (rtm1[i] > 0) {
+ printf " rt m1 " int(rtm1[i]) "kbit d " int(d[i] * 1000) "us m2 " int(rtm2[i])"kbit"
+ }
+ printf " ls m1 " int(lsm1[i]) "kbit d " int(d[i] * 1000) "us m2 " int(lsm2[i]) "kbit"
+ print " ul rate " int(maxrate[i]) "kbit"
+ }
+
+ # leaf qdisc
+ avpkt = 1200
+ for (i = 1; i <= n; i++) {
+ print "tc qdisc add dev "device" parent 1:"class[i]"0 handle "class[i]"00: fq_codel"
+ }
+
+ # filter rule
+ for (i = 1; i <= n; i++) {
+ print "tc filter add dev "device" parent 1: prio "class[i]" protocol ip handle "class[i]"/0xff fw flowid 1:"class[i] "0"
+ filterc=1
+ if (filter[i] != "") {
+ print " tc filter add dev "device" parent "class[i]"00: handle "filterc"0 "filter[i]
+ filterc=filterc+1
+ }
+ }
+}
+