Hiren Panchasara 4e7f755377 FreeBSD tcp stack used to inform respective congestion control module about the ... loss event but not use or obay the recommendations i.e. values set by it in some cases. Here is an attempt to solve that confusion by following relevant RFCs/drafts. Stack only sets congestion window/slow start threshold values when there is no CC module availalbe to take that action. All CC modules are inspected and updated when needed to take appropriate action on loss. tcp_stacks/fastpath module has been updated to adapt these changes. Note: Probably, the most significant change would be to not bring congestion window down to 1MSS on a loss signaled by 3-duplicate acks and letting respective CC decide that value. In collaboration with: Matt Macy <mmacy at nextbsd dot org> Discussed on: transport@ mailing list Reviewed by: jtl MFC after: 1 month Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D8225		2016-10-25 05:45:47 +00:00
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fastpath.c	FreeBSD tcp stack used to inform respective congestion control module about the	2016-10-25 05:45:47 +00:00