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net: sched: Allow changing default qdisc to FQ-PIE

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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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Danny Lin 2020-07-01 16:01:52 -07:00 committed by David S. Miller
parent d8c8a96ce5
commit b97e9d9d67
1 changed files with 4 additions and 0 deletions
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net/sched/Kconfig
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@ -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