From: Kevin Yang <yyd@google.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org, "Kevin(Yudong) Yang" <yyd@google.com>
Subject: [PATCH net 0/3] tcp_bbr: PROBE_RTT minor bug fixes
Date: Wed, 22 Aug 2018 17:43:13 -0400 [thread overview]
Message-ID: <20180822214316.174161-1-yyd@google.com> (raw)
From: "Kevin(Yudong) Yang" <yyd@google.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
next reply other threads:[~2018-08-23 1:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-22 21:43 Kevin Yang [this message]
2018-08-22 21:43 ` [PATCH net 1/3] tcp_bbr: add bbr_check_probe_rtt_done() helper Kevin Yang
2018-08-22 21:43 ` [PATCH net 2/3] tcp_bbr: in restart from idle, see if we should exit PROBE_RTT Kevin Yang
2018-08-22 21:43 ` [PATCH net 3/3] tcp_bbr: apply PROBE_RTT cwnd cap even if acked==0 Kevin Yang
2018-08-23 4:45 ` [PATCH net 0/3] tcp_bbr: PROBE_RTT minor bug fixes David Miller
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