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Refactor PRR code
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Authored by rscheff on Mar 24 2021, 2:58 PM.
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Details

Summary

Move all PRR related cwnd update calculations into
a single function (formerly tcp_prr_partialack) and
move unique code to handle partial ACKs out.

This is in preparation for a more broad use of PRR
to handle ECN cwnd reductions, and non-SACK cwnd
reductions, as well as enhancements planned around
Lost Retransmission detection (continuation of a
PRR episode during LRD-induced, further cwnd reduction).

No functional change intended.

MFC to stable/13 after 2 weeks.

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Repository
rS FreeBSD src repository - subversion
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Buildable 38044
Build 34933: arc lint + arc unit