From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 .../qos-scripts/files/usr/lib/qos/tcrules.awk      | 106 +++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 package/network/config/qos-scripts/files/usr/lib/qos/tcrules.awk

(limited to 'package/network/config/qos-scripts/files/usr/lib/qos/tcrules.awk')

diff --git a/package/network/config/qos-scripts/files/usr/lib/qos/tcrules.awk b/package/network/config/qos-scripts/files/usr/lib/qos/tcrules.awk
new file mode 100644
index 0000000..12f94a6
--- /dev/null
+++ b/package/network/config/qos-scripts/files/usr/lib/qos/tcrules.awk
@@ -0,0 +1,106 @@
+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 limit 800 quantum 300 noecn"
+	}
+
+	# filter rule
+	for (i = 1; i <= n; i++) {
+		filter_cmd = "tc filter add dev "device" parent 1: prio %d protocol ip handle %s fw flowid 1:%d0\n";
+		if (direction == "up") {
+			filter_1 = sprintf("0x%x0/0xf0", class[i])
+			filter_2 = sprintf("0x0%x/0x0f", class[i])
+		} else {
+			filter_1 = sprintf("0x0%x/0x0f", class[i])
+			filter_2 = sprintf("0x%x0/0xf0", class[i])
+		}
+
+		printf filter_cmd, class[i] * 2, filter_1, class[i]
+		printf filter_cmd, class[i] * 2 + 1, filter_2, class[i]
+
+		filterc=1
+		if (filter[i] != "") {
+			print " tc filter add dev "device" parent "class[i]"00: handle "filterc"0 "filter[i]
+			filterc=filterc+1
+		}
+	}
+}
+
-- 
cgit v1.2.3