net: sched: pie: enable timestamp based delay calculation

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RFC 8033 suggests an alternative approach to calculate the queue
delay in PIE by using a timestamp on every enqueued packet. This
patch adds an implementation of that approach and sets it as the
default method to calculate queue delay. The previous method (based
on Little's law) to calculate queue delay is set as optional.

Signed-off-by: Gautam Ramakrishnan <gautamramk@gmail.com>
Signed-off-by: Leslie Monis <lesliemonis@gmail.com>
Signed-off-by: Mohit P. Tahiliani <tahiliani@nitk.edu.in>
Acked-by: Dave Taht <dave.taht@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Gautam Ramakrishnan 2019-11-20 19:43:54 +05:30 • committed by David S. Miller

parent f01b437d12

commit cec2975f2b

2 changed files with 113 additions and 29 deletions

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22

include/uapi/linux/pkt_sched.h

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120

net/sched/sch_pie.c

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