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)

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>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26622 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/qos-scripts/files/usr/lib/qos/generate.sh

@@ -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>&-