This patchset contains fixes for 4 Errata topics from https://tools.ietf.org/html/draft-ietf-tsvwg-rfc4960-errata-01 Namely, sections: 3.12. Order of Adjustments of partial_bytes_acked and cwnd 3.22. Increase of partial_bytes_acked in Congestion Avoidance 3.26. CWND Increase in Congestion Avoidance Phase 3.27. Refresh of cwnd and ssthresh after Idle Period
Tests performed with netperf using net namespaces, with drop rates at 0%, 0.5% and 1% by netem, IPv4 and IPv6, 10 runs for each combination. I couldn't spot differences on the stats. With and without these patches the results vary in a similar way in terms of throughput and retransmissions. Tests with 20ms delay and 20ms delay + drops at 0.5% and 1% also had results in a similar way, no noticeable difference. Looking at cwnd, it was possible to notice slightly lower values being used while still sustaining same throughput profile. Marcelo Ricardo Leitner (4): sctp: update order of adjustments of partial_bytes_acked and cwnd sctp: allow increasing cwnd regardless of ctsn moving or not sctp: adjust cwnd increase in Congestion Avoidance phase sctp: adjust ssthresh when transport is idle net/sctp/transport.c | 54 ++++++++++++++++++++++++++++++++-------------------- 1 file changed, 33 insertions(+), 21 deletions(-) -- 2.9.4
