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|
# CBQ creates root class ------------------------------------------------------
tcc -xif:err -Xx,all 2>&1 >/dev/null | grep -v '^#'
#include "tcngreg.def"
cbq (CBQ_PARAMS) {
class (rate 5Bps) if 1;
}
EOF
block eth0 egress
qdisc 1 = cbq
class 0 = allot 1536 avpkt 1024 bandwidth 1250000 maxburst 2 rate 1250000
class 1 = allot 1536 avpkt 1024 bandwidth 1250000 maxburst 2 parent 0 rate 5
action 1 = class 1:1
match action 1
# CBQ uses existing root class ------------------------------------------------
tcc -xif:err -Xx,all 2>&1 >/dev/null | grep -v '^#'
#include "tcngreg.def"
cbq (CBQ_PARAMS) {
class (0,rate 10Mbps) {
class (rate 5Bps) if 1;
}
}
EOF
block eth0 egress
qdisc 1 = cbq
class 0 = allot 1536 avpkt 1024 bandwidth 1250000 maxburst 2 rate 1250000
class 1 = allot 1536 avpkt 1024 bandwidth 1250000 maxburst 2 parent 0 rate 5
action 1 = class 1:1
match action 1
# CBQ enforces that rate of root class equals bandwidth -----------------------
tcc 2>&1
#include "tcngreg.def"
cbq (CBQ_PARAMS) {
class (0,rate 1Mbps) {
class (rate 5Bps) if 1;
}
}
EOF
ERROR
<stdin>:4: "bandwidth" must equal "rate" at CBQ root class
# CBQ combines root class with qdisc at tc interface --------------------------
tcsim | sed '/\\(.* avpkt [^ ]*\\) .*/s//\\1/p;d'
dev eth0 {
#include "tcngreg.def"
cbq (CBQ_PARAMS) {
class (0,rate 10Mbps,avpkt 2kB) {
class (rate 5Bps,prio 1);
}
}
}
tc -d class show dev eth0
EOF
level 1 ewma 5 avpkt 2048b
level 0 ewma 5 avpkt 2048b
# Explicit CBQ root class can be selected (external) --------------------------
tcc -xif:err -Xx,all 2>&1 >/dev/null | grep -v '^#'
#include "tcngreg.def"
cbq (CBQ_PARAMS) {
class (0,rate 10Mbps)
if raw[0] == 1
{
class (rate 5Bps)
if raw[0] != 1;
}
}
EOF
block eth0 egress
qdisc 1 = cbq
class 0 = allot 1536 avpkt 1024 bandwidth 1250000 maxburst 2 rate 1250000
class 1 = allot 1536 avpkt 1024 bandwidth 1250000 maxburst 2 parent 0 rate 5
action 1 = class 1:1
action 0 = class 1:0
match 0:0:8=0x01 action 0
match action 1
# Explicit CBQ root class can be selected (tc) --------------------------------
tcsim | sed '/.*flowid /s///p;d'
dev eth0 {
#include "tcngreg.def"
cbq (CBQ_PARAMS) {
class (0,rate 10Mbps,prio 1)
if 1
{
class (rate 5Bps,prio 1);
}
}
}
tc filter show dev eth0
EOF
1:ffff
# CBQ root class creation is transparent at tc interface ----------------------
tcc | sed 's/ bandwidth .*//;s/ prio .*//;/^tc/p;d'
#include "tcngreg.def"
cbq (CBQ_PARAMS) {
class (rate 5Bps,prio 1) if 1;
}
EOF
tc qdisc add dev eth0 handle 1:0 root cbq
tc class add dev eth0 parent 1:0 classid 1:1 cbq
tc filter add dev eth0 parent 1:0 protocol all
# idem, verification with tcsim -----------------------------------------------
tcsim | sed 's/10Mbit/1250000bps/;s/5bit/5bps/'
dev eth0 {
#include "tcngreg.def"
cbq (CBQ_PARAMS) {
class (rate 5Bps,prio 1) if 1;
}
}
tc class show dev eth0
EOF
class cbq 1: root rate 1250000bps (bounded,isolated) prio no-transmit
class cbq 1:1 parent 1: rate 5bps prio 1
# Base test: without priomap, root class is selected --------------------------
LD_LIBRARY_PATH=. PATH=$PATH:tcc/ext tcsim -n -Xc,-xif:test -Xx,nounspec -v | \
sed '/.* c .*returns /s///p;d'
#include "ip.def"
dev eth0 10000 {
#include "tcngreg.def"
#include "fields.tc"
cbq (CBQ_PARAMS,prio 1) {
class (2,rate 1Mbps);
class (3,rate 2Mbps)
if ip_tos == 1;
}
}
$ipproto=TCP $src=1.2.3.4 $dst=5.6.7.8
send IP_HDR($tos=0)
send IP_HDR($tos=1)
EOF
OK (0) (1:0, 0x0)
OK (0) (1:3, 0x0)
# Priomap at CBQ qdisc applies to implicit root class -------------------------
LD_LIBRARY_PATH=. PATH=$PATH:tcc/ext tcsim -n -Xc,-xif:test -Xx,nounspec -v | \
sed '/.* c .*returns /s///p;d'
#include "ip.def"
dev eth0 10000 {
#include "tcngreg.def"
#include "fields.tc"
cbq (CBQ_PARAMS,prio 1,priomap $c) {
$c = class (2,rate 1Mbps);
class (3,rate 2Mbps)
if ip_tos == 1;
}
}
$ipproto=TCP $src=1.2.3.4 $dst=5.6.7.8
send IP_HDR($tos=0)
send IP_HDR($tos=1)
EOF
OK (0) (1:2, 0x0)
OK (0) (1:3, 0x0)
# Priomap at CBQ qdisc applies to explicit root class -------------------------
LD_LIBRARY_PATH=. PATH=$PATH:tcc/ext tcsim -n -Xc,-xif:test -Xx,nounspec -v | \
sed '/.* c .*returns /s///p;d'
#include "ip.def"
dev eth0 10000 {
#include "tcngreg.def"
#include "fields.tc"
cbq (CBQ_PARAMS,prio 1,priomap $c) {
class (0,rate 10Mbps) {
$c = class (2,rate 1Mbps);
class (3,rate 2Mbps)
if ip_tos == 1;
}
}
}
$ipproto=TCP $src=1.2.3.4 $dst=5.6.7.8
send IP_HDR($tos=0)
send IP_HDR($tos=1)
EOF
OK (0) (1:2, 0x0)
OK (0) (1:3, 0x0)
# Priomap at explicit CBQ root class applies ----------------------------------
LD_LIBRARY_PATH=. PATH=$PATH:tcc/ext tcsim -n -Xc,-xif:test -Xx,nounspec -v | \
sed '/.* c .*returns /s///p;d'
#include "ip.def"
dev eth0 10000 {
#include "tcngreg.def"
#include "fields.tc"
cbq (CBQ_PARAMS,prio 1) {
class (0,rate 10Mbps,priomap $c) {
$c = class (2,rate 1Mbps);
class (3,rate 2Mbps)
if ip_tos == 1;
}
}
}
$ipproto=TCP $src=1.2.3.4 $dst=5.6.7.8
send IP_HDR($tos=0)
send IP_HDR($tos=1)
EOF
OK (0) (1:2, 0x0)
OK (0) (1:3, 0x0)
# Priomap at CBQ qdisc and at explicit root class is refused ------------------
PATH=$PATH:tcc/ext tcc -xif:test -Xx,nounspec 2>&1
#include "tcngreg.def"
#include "fields.tc"
cbq (CBQ_PARAMS,prio 1,priomap $c1) {
class (0,rate 10Mbps,priomap $c2) {
$c1 = class (2,rate 1Mbps);
$c2 = class (3,rate 2Mbps)
if ip_tos == 1;
}
}
EOF
ERROR
<stdin>:5: "priomap" may not be present at both, CBQ qdisc and root class
|
