Added a good example for tc prio classification.

Author: Catalin(ux) M. BOIE

README

@@ -96,10 +96,21 @@ Examples:
 		14: Force priority (between 0 and 6 for non-root users). You can
 		use 'tc' command from iproute to set-up 'prio' qdisc and to
 		assign prio to queues:
+		# 0. setup
 		export FORCE_NET_VERBOSE=1
-		export FORCE_NET_PRIO=2
 		export LD_PRELOAD=${LD_PRELOAD}:/usr/lib/force_bind.so
-		your_program_here
+		# 1. Make sure you have a 'prio' qdisc attached to eth0, for example:
+		tc qdisc add ev eth0 root handle 1: prio
+		# 2. Assign applications to classed (bands):
+		export FORCE_NET_PRIO=6 # interactive, band 0
+		your_voip_program_here
+		export FORCE_NET_PRIO=0 # best effort, band 1
+		your_mail_program_here
+		export FORCE_NET_PRIO=2 # bulk, band 2
+		your_remote_backup_program_here
+		# 3. Run tc statistics so you can see the classification:
+		tc -s class show dev eth0
+
 
 Installation:
 		- ./configure

test_bw4.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+# Test setting priority and clasification in prio qdisc
+
+ulimit -c2000000
+
+export FORCE_NET_VERBOSE=1
+
+export LD_PRELOAD="${LD_PRELOAD}:./force_bind.so"
+
+# 6 = Interactive (band 0)
+export FORCE_NET_PRIO=6
+strace -o ${0}.band0 ./send_udp 123 3000 &
+
+# 0 = best effors (band 1)
+export FORCE_NET_PRIO=0
+strace -o ${0}.band1 ./send_udp 123 3000 &
+
+# 2 = bulk (band 2)
+export FORCE_NET_PRIO=2
+strace -o ${0}.band2 ./send_udp 123 3000 &
+
+wait