netdev - [PATCH net 0/3] tcp_bbr: PROBE

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Message-Id: <20180822214316.174161-1-yyd@google.com>
Date:   Wed, 22 Aug 2018 17:43:13 -0400
From:   Kevin Yang <yyd@...gle.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, "Kevin(Yudong) Yang" <yyd@...gle.com>
Subject: [PATCH net 0/3] tcp_bbr: PROBE_RTT minor bug fixes

From: "Kevin(Yudong) Yang" <yyd@...gle.com>

This series includes two minor bug fixes for the TCP BBR PROBE_RTT
mechanism, and one preparatory patch:

(1) A preparatory patch to reorganize the PROBE_RTT logic by refactoring
    (into its own function) the code to exit PROBE_RTT, since the next
    patch will be using that code in a new context.

(2) Fix: When BBR restarts from idle and if BBR is in PROBE_RTT mode,
    BBR should check if it's time to exit PROBE_RTT. If yes, then BBR
    should exit PROBE_RTT mode and restore the cwnd to its full value.

(3) Fix: Apply the PROBE_RTT cwnd cap even if the count of fully-ACKed
    packets is 0.

Kevin Yang (3):
  tcp_bbr: add bbr_check_probe_rtt_done() helper
  tcp_bbr: in restart from idle, see if we should exit PROBE_RTT
  tcp_bbr: apply PROBE_RTT cwnd cap even if acked==0

 net/ipv4/tcp_bbr.c | 42 ++++++++++++++++++++++++------------------
 1 file changed, 24 insertions(+), 18 deletions(-)

-- 
2.18.0.1017.ga543ac7ca45-goog