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kernel: generic: select the fq_codel qdisc by default

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The kernel configuration allows us to select a default qdisc. Let's do this for
5.10 (as 5.4 is on its way out) and get rid of the hacky patch we've been
carrying.

Acked-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
This commit is contained in:
Rui Salvaterra 2021-12-19 19:29:58 +00:00
parent 1847382456
commit f39872d966
2 changed files with 4 additions and 101 deletions
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5
target/linux/generic/config-5.10
View File

@ -1331,11 +1331,14 @@ CONFIG_DEBUG_KERNEL=y
# CONFIG_DECNET is not set
CONFIG_DEFAULT_CUBIC=y
CONFIG_DEFAULT_DEADLINE=y
CONFIG_DEFAULT_FQ_CODEL=y
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_DEFAULT_NET_SCH="fq_codel"
# CONFIG_DEFAULT_NOOP is not set
# CONFIG_DEFAULT_PFIFO_FAST is not set
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_SECURITY=""
CONFIG_DEFAULT_SECURITY_DAC=y
@ -3910,7 +3913,7 @@ CONFIG_NET_SCHED=y
# CONFIG_NET_SCH_CBS is not set
# CONFIG_NET_SCH_CHOKE is not set
# CONFIG_NET_SCH_CODEL is not set
# CONFIG_NET_SCH_DEFAULT is not set
CONFIG_NET_SCH_DEFAULT=y
# CONFIG_NET_SCH_DRR is not set
# CONFIG_NET_SCH_DSMARK is not set
# CONFIG_NET_SCH_ETF is not set

100
target/linux/generic/hack-5.10/661-use_fq_codel_by_default.patch
View File

@ -1,100 +0,0 @@
From 1d418f7e88035ed7a94073f6354246c66e9193e9 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Fri, 7 Jul 2017 17:22:58 +0200
Subject: fq_codel: switch default qdisc from pfifo_fast to fq_codel and remove pfifo_fast
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
include/net/sch_generic.h | 3 ++-
net/sched/Kconfig | 3 ++-
net/sched/sch_api.c | 2 +-
net/sched/sch_fq_codel.c | 3 ++-
net/sched/sch_generic.c | 4 ++--
5 files changed, 9 insertions(+), 6 deletions(-)
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -625,12 +625,13 @@ extern struct Qdisc_ops noop_qdisc_ops;
extern struct Qdisc_ops pfifo_fast_ops;
extern struct Qdisc_ops mq_qdisc_ops;
extern struct Qdisc_ops noqueue_qdisc_ops;
+extern struct Qdisc_ops fq_codel_qdisc_ops;
extern const struct Qdisc_ops *default_qdisc_ops;
static inline const struct Qdisc_ops *
get_default_qdisc_ops(const struct net_device *dev, int ntx)
{
return ntx < dev->real_num_tx_queues ?
- default_qdisc_ops : &pfifo_fast_ops;
+ default_qdisc_ops : &fq_codel_qdisc_ops;
}
struct Qdisc_class_common {
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -4,8 +4,9 @@
#
menuconfig NET_SCHED
- bool "QoS and/or fair queueing"
+ def_bool y
select NET_SCH_FIFO
+ select NET_SCH_FQ_CODEL
help
When the kernel has several packets to send out over a network
device, it has to decide which ones to send first, which ones to
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -2288,7 +2288,7 @@ static int __init pktsched_init(void)
return err;
}
- register_qdisc(&pfifo_fast_ops);
+ register_qdisc(&fq_codel_qdisc_ops);
register_qdisc(&pfifo_qdisc_ops);
register_qdisc(&bfifo_qdisc_ops);
register_qdisc(&pfifo_head_drop_qdisc_ops);
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -709,7 +709,7 @@ static const struct Qdisc_class_ops fq_c
.walk = fq_codel_walk,
};
-static struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = {
+struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = {
.cl_ops = &fq_codel_class_ops,
.id = "fq_codel",
.priv_size = sizeof(struct fq_codel_sched_data),
@@ -724,6 +724,7 @@ static struct Qdisc_ops fq_codel_qdisc_o
.dump_stats = fq_codel_dump_stats,
.owner = THIS_MODULE,
};
+EXPORT_SYMBOL(fq_codel_qdisc_ops);
static int __init fq_codel_module_init(void)
{
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -32,7 +32,7 @@
#include <net/xfrm.h>
/* Qdisc to use by default */
-const struct Qdisc_ops *default_qdisc_ops = &pfifo_fast_ops;
+const struct Qdisc_ops *default_qdisc_ops = &fq_codel_qdisc_ops;
EXPORT_SYMBOL(default_qdisc_ops);
static void qdisc_maybe_clear_missed(struct Qdisc *q,
@@ -1062,12 +1062,12 @@ static void attach_one_default_qdisc(str
void *_unused)
{
struct Qdisc *qdisc;
- const struct Qdisc_ops *ops = default_qdisc_ops;
+ const struct Qdisc_ops *ops = &fq_codel_qdisc_ops;
if (dev->priv_flags & IFF_NO_QUEUE)
ops = &noqueue_qdisc_ops;
else if(dev->type == ARPHRD_CAN)
- ops = &pfifo_fast_ops;
+ ops = &fq_codel_qdisc_ops;
qdisc = qdisc_create_dflt(dev_queue, ops, TC_H_ROOT, NULL);
if (!qdisc)