diff options
Diffstat (limited to 'tcp-fix-incorrect-ca_state-in-tail-loss-probe.patch')
| -rw-r--r-- | tcp-fix-incorrect-ca_state-in-tail-loss-probe.patch | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/tcp-fix-incorrect-ca_state-in-tail-loss-probe.patch b/tcp-fix-incorrect-ca_state-in-tail-loss-probe.patch deleted file mode 100644 index 1a1264ffa..000000000 --- a/tcp-fix-incorrect-ca_state-in-tail-loss-probe.patch +++ /dev/null @@ -1,107 +0,0 @@ -Path: news.gmane.org!not-for-mail -From: Yuchung Cheng <ycheng@google.com> -Newsgroups: gmane.linux.network -Subject: [PATCH net] tcp: fix incorrect ca_state in tail loss probe -Date: Sat, 12 Oct 2013 10:16:27 -0700 -Lines: 34 -Approved: news@gmane.org -Message-ID: <1381598187-9681-1-git-send-email-ycheng@google.com> -NNTP-Posting-Host: plane.gmane.org -X-Trace: ger.gmane.org 1381598242 29686 80.91.229.3 (12 Oct 2013 17:17:22 GMT) -X-Complaints-To: usenet@ger.gmane.org -NNTP-Posting-Date: Sat, 12 Oct 2013 17:17:22 +0000 (UTC) -Cc: netdev@vger.kernel.org, michael@sterretts.net, - jwboyer@fedoraproject.org, sesse@google.com, dormando@rydia.net, - Yuchung Cheng <ycheng@google.com> -To: davem@davemloft.net, ncardwell@google.com, nanditad@google.com -Original-X-From: netdev-owner@vger.kernel.org Sat Oct 12 19:17:23 2013 -Return-path: <netdev-owner@vger.kernel.org> -Envelope-to: linux-netdev-2@plane.gmane.org -Original-Received: from vger.kernel.org ([209.132.180.67]) - by plane.gmane.org with esmtp (Exim 4.69) - (envelope-from <netdev-owner@vger.kernel.org>) - id 1VV2od-0004tp-02 - for linux-netdev-2@plane.gmane.org; Sat, 12 Oct 2013 19:17:23 +0200 -Original-Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand - id S1753183Ab3JLRRU (ORCPT <rfc822;linux-netdev-2@m.gmane.org>); - Sat, 12 Oct 2013 13:17:20 -0400 -Original-Received: from mail-pb0-f74.google.com ([209.85.160.74]:35839 "EHLO - mail-pb0-f74.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org - with ESMTP id S1752493Ab3JLRRS (ORCPT - <rfc822;netdev@vger.kernel.org>); Sat, 12 Oct 2013 13:17:18 -0400 -Original-Received: by mail-pb0-f74.google.com with SMTP id rq2so543459pbb.1 - for <netdev@vger.kernel.org>; Sat, 12 Oct 2013 10:17:18 -0700 (PDT) -DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; - d=google.com; s=20120113; - h=from:to:cc:subject:date:message-id; - bh=YSBIMZEgVuqyP2cau1199a1sz5d28JA7LPPsF6w9FYQ=; - b=cCkXgePT7f0kRy+VBGvs3DZSLhVn0z7O74B7OHYpdZkQBznhNZ2b6ZGbkDqaKJXyLT - GEsq/JXCgtwpC7aGSz9dPdAZU6kondKOAmfhh54u6f2+ymcZJ4zHpoA6mWuKJ4zlTF2w - 6tRhnT+/N5RkfIfYD/mcDx97X41kRT3NKJ6bsCoiNJIO2+6j8SrOi8C27InOkdIRY/AT - I1uu2bvai1CfrC5yQ6UfpKUg2jioFDOi7i5nSEon+JnWeJavHpO01JMHuar7ZeGnAKJg - kVLwyiRujU9Fz0CKIMPZihAngQu/0OgqORQIjygeqz+GPgtTxDGQP7IUNR/d+JOPVUse - XlSA== -X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; - d=1e100.net; s=20130820; - h=x-gm-message-state:from:to:cc:subject:date:message-id; - bh=YSBIMZEgVuqyP2cau1199a1sz5d28JA7LPPsF6w9FYQ=; - b=d95i7RXY0ff5vnWvrGqxWfSvvAE8SC6YAaBn3ZqbARIZm5GgynIAB/WYnrIOqpqGV6 - 56jVM40bfzLrols1UZzyJWqPIgxee1zPrESh+WrSsDP2tTdYKl/zk13lbt/u7nOn9o3u - HrAo2aY4DtV3P0ABEq1lKdazmmPACTc6256QQ2nxtHs5n7s7P1ERkpX7NGNqNf1zDBSv - 60xeoswRpMkh0G5ZUgpPYsIbXws9F64n5ytq34O2UDZPv5oPEd8I7P34HpqWkNsLoEBs - XXTxs1SLc8TI3vdduhaQ+rmEvcE5vTaqjVCQAT2mMKTJJ9xIFueF5zExfI892PHAcJQ8 - jiaw== -X-Gm-Message-State: ALoCoQkeL+3MY64KlpZKI1BuYMU+yTQcYF1C+U5u+kPpqROoekUMzIaH45qERBARAi/0vgJ5YM1Cwm+43d66vZMn/WdHPurbMHfFn3PYqeZSAzOEeuSA2jGTSZUkpuH8YwFqiNhABtj93ahsBXrA6POrXb531UvuahU+rnFLTGNLxVHv/08PW3l5PbN8UaTNpUI1qcf6O6MarFcB+fZLYPb339v4EIrLxg== -X-Received: by 10.66.5.226 with SMTP id v2mr8825633pav.22.1381598238410; - Sat, 12 Oct 2013 10:17:18 -0700 (PDT) -Original-Received: from corp2gmr1-2.hot.corp.google.com (corp2gmr1-2.hot.corp.google.com [172.24.189.93]) - by gmr-mx.google.com with ESMTPS id a24si3247317yhl.1.1969.12.31.16.00.00 - (version=TLSv1.1 cipher=AES128-SHA bits=128/128); - Sat, 12 Oct 2013 10:17:18 -0700 (PDT) -Original-Received: from blast2.mtv.corp.google.com (blast2.mtv.corp.google.com [172.17.132.164]) - by corp2gmr1-2.hot.corp.google.com (Postfix) with ESMTP id 2F2B45A41A0; - Sat, 12 Oct 2013 10:17:18 -0700 (PDT) -Original-Received: by blast2.mtv.corp.google.com (Postfix, from userid 5463) - id C6A85220C26; Sat, 12 Oct 2013 10:17:17 -0700 (PDT) -X-Mailer: git-send-email 1.8.4 -Original-Sender: netdev-owner@vger.kernel.org -Precedence: bulk -List-ID: <netdev.vger.kernel.org> -X-Mailing-List: netdev@vger.kernel.org -Xref: news.gmane.org gmane.linux.network:286793 -Archived-At: <http://permalink.gmane.org/gmane.linux.network/286793> - -On receiving an ACK that covers the loss probe sequence, TLP -immediately sets the congestion state to Open, even though some packets -are not recovered and retransmisssion are on the way. The later ACks -may trigger a WARN_ON check in step D of tcp_fastretrans_alert(), e.g., -https://bugzilla.redhat.com/show_bug.cgi?id=989251 - -The fix is to follow the similar procedure in recovery by calling -tcp_try_keep_open(). The sender switches to Open state if no packets -are retransmissted. Otherwise it goes to Disorder and let subsequent -ACKs move the state to Recovery or Open. - -Reported-By: Michael Sterrett <michael@sterretts.net> -Tested-By: Dormando <dormando@rydia.net> -Signed-off-by: Yuchung Cheng <ycheng@google.com> ---- - net/ipv4/tcp_input.c | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - -diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c -index 113dc5f..53974c7 100644 ---- a/net/ipv4/tcp_input.c -+++ b/net/ipv4/tcp_input.c -@@ -3291,7 +3291,7 @@ static void tcp_process_tlp_ack(struct sock *sk, u32 ack, int flag) - tcp_init_cwnd_reduction(sk, true); - tcp_set_ca_state(sk, TCP_CA_CWR); - tcp_end_cwnd_reduction(sk); -- tcp_set_ca_state(sk, TCP_CA_Open); -+ tcp_try_keep_open(sk); - NET_INC_STATS_BH(sock_net(sk), - LINUX_MIB_TCPLOSSPROBERECOVERY); - } --- -1.8.4 - |