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Subject[PATCH] net: sched: Allow changing default qdisc to FQ-PIE
Date
Similar to fq_codel and the other qdiscs that can set as default,
fq_pie is also suitable for general use without explicit configuration,
which makes it a valid choice for this.

This is useful in situations where a painless out-of-the-box solution
for reducing bufferbloat is desired but fq_codel is not necessarily the
best choice. For example, fq_pie can be better for DASH streaming, but
there could be more cases where it's the better choice of the two simple
AQMs available in the kernel.

Signed-off-by: Danny Lin <danny@kdrag0n.dev>
---
net/sched/Kconfig | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index 84badf00647e..a3b37d88800e 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -468,6 +468,9 @@ choice
config DEFAULT_FQ_CODEL
bool "Fair Queue Controlled Delay" if NET_SCH_FQ_CODEL

+ config DEFAULT_FQ_PIE
+ bool "Flow Queue Proportional Integral controller Enhanced" if NET_SCH_FQ_PIE
+
config DEFAULT_SFQ
bool "Stochastic Fair Queue" if NET_SCH_SFQ

@@ -480,6 +483,7 @@ config DEFAULT_NET_SCH
default "pfifo_fast" if DEFAULT_PFIFO_FAST
default "fq" if DEFAULT_FQ
default "fq_codel" if DEFAULT_FQ_CODEL
+ default "fq_pie" if DEFAULT_FQ_PIE
default "sfq" if DEFAULT_SFQ
default "pfifo_fast"
endif
--
2.27.0
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