From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yuchung Cheng Subject: [PATCH net-next 0/2] remove FACK loss recovery Date: Wed, 8 Nov 2017 13:01:25 -0800 Message-ID: <20171108210127.195286-1-ycheng@google.com> Cc: netdev@vger.kernel.org, edumazet@google.com, ncardwell@google.com, soheil@google.com, priyarjha@google.com, Yuchung Cheng To: davem@davemloft.net Return-path: Received: from mail-it0-f68.google.com ([209.85.214.68]:47801 "EHLO mail-it0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753109AbdKHVBc (ORCPT ); Wed, 8 Nov 2017 16:01:32 -0500 Received: by mail-it0-f68.google.com with SMTP id p138so8562353itp.2 for ; Wed, 08 Nov 2017 13:01:32 -0800 (PST) Sender: netdev-owner@vger.kernel.org List-ID: This patch set removes the forward-acknowledgment (FACK) packet-based loss and reordering detection. This simplifies TCP loss recovery since the SACK scoreboard no longer needs to track the number of pending packets under highest SACKed sequence. FACK is subsumed by the time-based RACK loss detection which is more robust under reordering and second order losses. Yuchung Cheng (2): tcp: retire FACK loss detection tcp: use sequence distance to detect reordering Documentation/networking/ip-sysctl.txt | 3 +- include/linux/tcp.h | 2 - include/net/tcp.h | 14 +-- include/uapi/linux/snmp.h | 1 - net/ipv4/proc.c | 1 - net/ipv4/tcp.c | 3 - net/ipv4/tcp_input.c | 208 ++++++++++++--------------------- net/ipv4/tcp_metrics.c | 4 +- net/ipv4/tcp_minisocks.c | 6 +- net/ipv4/tcp_output.c | 22 +--- 10 files changed, 80 insertions(+), 184 deletions(-) -- 2.15.0.448.gf294e3d99a-goog