Attachment 201680 Details for Bug 193762 – packetdrill script for reproducing the issue

packetdrill script for reproducing the issue

pr-193762.pkt (text/plain), 2.87 KB, created by Michael Tuexen on 2019-02-03 12:54:20 UTC

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Creator: Michael Tuexen

Created: 2019-02-03 12:54:20 UTC

Size: 2.87 KB

patch

obsolete

>//
>// Copyright (c) 2019 Michael Tuexen
>// All rights reserved.
>//
>// Redistribution and use in source and binary forms, with or without
>// modification, are permitted provided that the following conditions
>// are met:
>// 1. Redistributions of source code must retain the above copyright
>//    notice, this list of conditions and the following disclaimer.
>// 2. Redistributions in binary form must reproduce the above copyright
>//    notice, this list of conditions and the following disclaimer in the
>//    documentation and/or other materials provided with the distribution.
>//
>// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
>// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
>// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
>// ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
>// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
>// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
>// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
>// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
>// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
>// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
>// SUCH DAMAGE.
>//
>
>--ip_version=ipv4
>
>// Ensure that all relevant sysctl variables have their default values.
> 0.00 `sysctl -w net.inet.tcp.hostcache.purgenow=1`
>+0.00 `sysctl -w net.inet.tcp.syncookies_only=0`
>+0.00 `sysctl -w net.inet.tcp.syncookies=1`
>+0.00 `sysctl -w net.inet.tcp.rfc1323=1`
>+0.00 `sysctl -w net.inet.tcp.sack.enable=1`
>+0.00 `sysctl -w net.inet.tcp.ecn.enable=2`
>+0.00 `sysctl -w net.inet.tcp.initcwnd_segments=10`
>+0.00 `sysctl -w net.inet.tcp.rfc3465=1`
>// Set problem specific sysctl variables.
>+0.00 `kldload -n cc_cdg`
>+0.00 `sysctl net.inet.tcp.cc.algorithm=cdg`
>+0.00 `sysctl net.inet.tcp.cc.cdg.smoothing_factor=0`
>// First setup a TCP connection.
>+0.00 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
>+0.00 fcntl(3, F_GETFL) = 0x02 (flags O_RDWR)
>+0.00 fcntl(3, F_SETFL, O_RDWR | O_NONBLOCK) = 0
>+0.00 connect(3, ..., ...) = -1 EINPROGRESS (Operation now in progress)
>+0.00 > S    0:0(0)             win 65535 <mss 1460,nop,wscale 6,sackOK,TS val 100 ecr 0>
>+0.05 < S.   0:0(0)     ack   1 win 65535 <mss 1460,sackOK,eol,eol>
>+0.00 >  .   1:1(0)     ack   1 win 65535
>// Perform data transfer.
>+1.00 write(3, ..., 100) = 100
>+0.00 > P.   1:101(100) ack   1 win 65535
>+0.05 <  .   1:1(0)     ack 101 win 65535
>// Perform another data transfer.
>+1.00 write(3, ..., 100) = 100
>+0.00 > P. 101:201(100) ack   1 win 65535
>+0.05 <  .   1:1(0)     ack 201 win 65535
>// Teardown TCP connection.
>+0.00 < F.   1:1(0)     ack 201 win 65535
>+0.00 >  . 201:201(0)   ack   2 win 65535
>+0.00 close(3) = 0
>+0.00 > F. 201:201(0)   ack   2 win 65535
>+0.05 <  .   2:2(0)     ack 202 win 65535

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Attachments on bug 193762: 149717 | 201680