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net/sched: Retire CBQ qdisc 

While this amazing qdisc has served us well over the years it has not been
getting any tender love and care and has bitrotted over time.
It has become mostly a shooting target for syzkaller lately.
For this reason, we are retiring it. Goodbye CBQ - we loved you.

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jamal Hadi Salim 2023-02-14 08:49:11 -05:00 committed by Paolo Abeni
parent 8fdf665997
commit 051d442098
4 changed files with 0 additions and 1929 deletions
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17
net/sched/Kconfig
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@ -45,23 +45,6 @@ if NET_SCHED
comment "Queueing/Scheduling"
config NET_SCH_CBQ
tristate "Class Based Queueing (CBQ)"
help
Say Y here if you want to use the Class-Based Queueing (CBQ) packet
scheduling algorithm. This algorithm classifies the waiting packets
into a tree-like hierarchy of classes; the leaves of this tree are
in turn scheduled by separate algorithms.
See the top of <file:net/sched/sch_cbq.c> for more details.
CBQ is a commonly used scheduler, so if you're unsure, you should
say Y here. Then say Y to all the queueing algorithms below that you
want to use as leaf disciplines.
To compile this code as a module, choose M here: the
module will be called sch_cbq.
config NET_SCH_HTB
tristate "Hierarchical Token Bucket (HTB)"
help

1
net/sched/Makefile
View File

@ -33,7 +33,6 @@ obj-$(CONFIG_NET_ACT_TUNNEL_KEY)+= act_tunnel_key.o
obj-$(CONFIG_NET_ACT_CT) += act_ct.o
obj-$(CONFIG_NET_ACT_GATE) += act_gate.o
obj-$(CONFIG_NET_SCH_FIFO) += sch_fifo.o
obj-$(CONFIG_NET_SCH_CBQ) += sch_cbq.o
obj-$(CONFIG_NET_SCH_HTB) += sch_htb.o
obj-$(CONFIG_NET_SCH_HFSC) += sch_hfsc.o
obj-$(CONFIG_NET_SCH_RED) += sch_red.o

1727
net/sched/sch_cbq.c
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File diff suppressed because it is too large Load Diff

184
tools/testing/selftests/tc-testing/tc-tests/qdiscs/cbq.json
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@ -1,184 +0,0 @@
[
{
"id": "3460",
"name": "Create CBQ with default setting",
"category": [
"qdisc",
"cbq"
],
"plugins": {
"requires": "nsPlugin"
},
"setup": [
"$IP link add dev $DUMMY type dummy || /bin/true"
],
"cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root cbq bandwidth 10000 avpkt 9000",
"expExitCode": "0",
"verifyCmd": "$TC qdisc show dev $DUMMY",
"matchPattern": "qdisc cbq 1: root refcnt [0-9]+ rate 10Kbit \\(bounded,isolated\\) prio no-transmit",
"matchCount": "1",
"teardown": [
"$TC qdisc del dev $DUMMY handle 1: root",
"$IP link del dev $DUMMY type dummy"
]
},
{
"id": "0592",
"name": "Create CBQ with mpu",
"category": [
"qdisc",
"cbq"
],
"plugins": {
"requires": "nsPlugin"
},
"setup": [
"$IP link add dev $DUMMY type dummy || /bin/true"
],
"cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root cbq bandwidth 10000 avpkt 9000 mpu 1000",
"expExitCode": "0",
"verifyCmd": "$TC qdisc show dev $DUMMY",
"matchPattern": "qdisc cbq 1: root refcnt [0-9]+ rate 10Kbit \\(bounded,isolated\\) prio no-transmit",
"matchCount": "1",
"teardown": [
"$TC qdisc del dev $DUMMY handle 1: root",
"$IP link del dev $DUMMY type dummy"
]
},
{
"id": "4684",
"name": "Create CBQ with valid cell num",
"category": [
"qdisc",
"cbq"
],
"plugins": {
"requires": "nsPlugin"
},
"setup": [
"$IP link add dev $DUMMY type dummy || /bin/true"
],
"cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root cbq bandwidth 10000 avpkt 9000 cell 128",
"expExitCode": "0",
"verifyCmd": "$TC qdisc show dev $DUMMY",
"matchPattern": "qdisc cbq 1: root refcnt [0-9]+ rate 10Kbit \\(bounded,isolated\\) prio no-transmit",
"matchCount": "1",
"teardown": [
"$TC qdisc del dev $DUMMY handle 1: root",
"$IP link del dev $DUMMY type dummy"
]
},
{
"id": "4345",
"name": "Create CBQ with invalid cell num",
"category": [
"qdisc",
"cbq"
],
"plugins": {
"requires": "nsPlugin"
},
"setup": [
"$IP link add dev $DUMMY type dummy || /bin/true"
],
"cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root cbq bandwidth 10000 avpkt 9000 cell 100",
"expExitCode": "1",
"verifyCmd": "$TC qdisc show dev $DUMMY",
"matchPattern": "qdisc cbq 1: root refcnt [0-9]+ rate 10Kbit \\(bounded,isolated\\) prio no-transmit",
"matchCount": "0",
"teardown": [
"$IP link del dev $DUMMY type dummy"
]
},
{
"id": "4525",
"name": "Create CBQ with valid ewma",
"category": [
"qdisc",
"cbq"
],
"plugins": {
"requires": "nsPlugin"
},
"setup": [
"$IP link add dev $DUMMY type dummy || /bin/true"
],
"cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root cbq bandwidth 10000 avpkt 9000 ewma 16",
"expExitCode": "0",
"verifyCmd": "$TC qdisc show dev $DUMMY",
"matchPattern": "qdisc cbq 1: root refcnt [0-9]+ rate 10Kbit \\(bounded,isolated\\) prio no-transmit",
"matchCount": "1",
"teardown": [
"$TC qdisc del dev $DUMMY handle 1: root",
"$IP link del dev $DUMMY type dummy"
]
},
{
"id": "6784",
"name": "Create CBQ with invalid ewma",
"category": [
"qdisc",
"cbq"
],
"plugins": {
"requires": "nsPlugin"
},
"setup": [
"$IP link add dev $DUMMY type dummy || /bin/true"
],
"cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root cbq bandwidth 10000 avpkt 9000 ewma 128",
"expExitCode": "1",
"verifyCmd": "$TC qdisc show dev $DUMMY",
"matchPattern": "qdisc cbq 1: root refcnt [0-9]+ rate 10Kbit \\(bounded,isolated\\) prio no-transmit",
"matchCount": "0",
"teardown": [
"$IP link del dev $DUMMY type dummy"
]
},
{
"id": "5468",
"name": "Delete CBQ with handle",
"category": [
"qdisc",
"cbq"
],
"plugins": {
"requires": "nsPlugin"
},
"setup": [
"$IP link add dev $DUMMY type dummy || /bin/true",
"$TC qdisc add dev $DUMMY handle 1: root cbq bandwidth 10000 avpkt 9000"
],
"cmdUnderTest": "$TC qdisc del dev $DUMMY handle 1: root",
"expExitCode": "0",
"verifyCmd": "$TC qdisc show dev $DUMMY",
"matchPattern": "qdisc cbq 1: root refcnt [0-9]+ rate 10Kbit \\(bounded,isolated\\) prio no-transmit",
"matchCount": "0",
"teardown": [
"$IP link del dev $DUMMY type dummy"
]
},
{
"id": "492a",
"name": "Show CBQ class",
"category": [
"qdisc",
"cbq"
],
"plugins": {
"requires": "nsPlugin"
},
"setup": [
"$IP link add dev $DUMMY type dummy || /bin/true"
],
"cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root cbq bandwidth 10000 avpkt 9000",
"expExitCode": "0",
"verifyCmd": "$TC class show dev $DUMMY",
"matchPattern": "class cbq 1: root rate 10Kbit \\(bounded,isolated\\) prio no-transmit",
"matchCount": "1",
"teardown": [
"$TC qdisc del dev $DUMMY handle 1: root",
"$IP link del dev $DUMMY type dummy"
]
}
]