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This patch updates qos-scripts to support fair traffic sharing using the SFQ with external classifiers method. It also corrects a bug in the unsupported ESFQ method already used by qos-scripts. (ESFQ: http://fatooh.org/esfq-2.6/ only updated to 2.6.24, it was switched to an SFQ patch after that and not updated since 2008)

Browse source 
A class can be forced to use SFQ, and an external classifier added like
this:

config class "Normal"
         option avgrate     10
         option priority    30
         option packetdelay 100
         option limitrate   94
#       option qdisc      "sfq perturb 2"
config class "Normal_up"
#       option filter   "protocol all flow hash keys src divisor 1024"
config class "Normal_down"
#       option filter   "protocol all flow hash keys dst divisor 1024"

Using these options, the user needs to load cls_flow before qos-scripts
starts.

I've got more information here:
http://oneitguy.com/blogs/netprince/fair-traffic-sharing-esfq-broken-switching-sfqexternal-classifiers

This has been tested on r23914.

Signed-off-by: Ben Pfountz <netprince<>vt_edu>

SVN-Revision: 26622
This commit is contained in:
Jo-Philipp Wich 2011-04-12 20:33:11 +00:00
parent b32797cc55
commit 9646ca6c6e
3 changed files with 16 additions and 11 deletions
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2
package/qos-scripts/Makefile
View file

@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=qos-scripts
PKG_VERSION:=1.2.1
PKG_RELEASE:=4
PKG_RELEASE:=5
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)

6
package/qos-scripts/files/usr/lib/qos/generate.sh
View file

@ -315,10 +315,10 @@ start_interface() {
cls_var maxrate "$class" limitrate $dir 100
cls_var prio "$class" priority $dir 1
cls_var avgrate "$class" avgrate $dir 0
cls_var qdisc_esfq "$class" qdisc_esfq $dir ""
[ "$qdisc_esfq" != "" ] && add_insmod sch_esfq
cls_var qdisc "$class" qdisc $dir ""
cls_var filter "$class" filter $dir ""
config_get classnr "$class" classnr
append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate:$qdisc_esfq" "$N"
append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate:$qdisc:$filter" "$N"
done
append ${prefix}q "$(tcrules)" "$N"
export dev_${dir}="ifconfig $dev up txqueuelen 5 >&- 2>&-

19
package/qos-scripts/files/usr/lib/qos/tcrules.awk
View file

@ -13,7 +13,8 @@ BEGIN {
pktsize[n] = $4
delay[n] = $5
maxrate[n] = ($6 * linespeed / 100)
qdisc_esfq[n] = $7
qdisc[n] = $7
filter[n] = $8
}
END {
@ -68,11 +69,7 @@ END {
# main qdisc
for (i = 1; i <= n; i++) {
printf "tc class add dev "device" parent 1:1 classid 1:"class[i]"0 hfsc"
if (qdisc_esfq[i] != "") {
# user requested esfq
print "esfq " qdisc_esfq[i] " limit " ql
} else if (rtm1[i] > 0) {
# rt class - use sfq
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"
@ -96,7 +93,10 @@ END {
max = 3 * min
limit = (min + max) * 3
if (rtm1[i] > 0) {
if (qdisc[i] != "") {
# user specified qdisc
print qdisc[i] " limit " limit
} else if (rtm1[i] > 0) {
# rt class - use sfq
print "sfq perturb 2 limit " limit
} else {
@ -123,6 +123,11 @@ END {
# filter rule
for (i = 1; i <= n; i++) {
print "tc filter add dev "device" parent 1: prio "class[i]" protocol ip handle "class[i]" 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
}
}
}