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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">Hi Dan,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">Pktgen binary in DTS was built from internal branch when it hasn’t been up streamed. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">Because of the binary was built on x86 Xeon platform, I think it cannot be workable for all platform.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">Our plan is remove it from DTS and support latest pktgen which build on tester machine by user.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">DTS will support both Trex and Pktgen as software packget generator in next release.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">By now my suggestion is that you can build pktgen by yourself and generate your tgen.tgz.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">Marvin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><a name="_____replyseparator"></a><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> dts [mailto:dts-bounces@dpdk.org]
<b>On Behalf Of </b>Dan Shimshoni<br>
<b>Sent:</b> Thursday, February 01, 2018 6:56 PM<br>
<b>To:</b> dts@dpdk.org<br>
<b>Subject:</b> [dts] DTS with pktgen crashes<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hello,<o:p></o:p></p>
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<p class="MsoNormal">I am trying to run L2FW DTS with pktgen on <o:p></o:p></p>
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<p class="MsoNormal">DELL R720 server, and I get "Illegal instruction".<o:p></o:p></p>
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<p class="MsoNormal">I tried to find the root cause of the problem, and it seems related to<o:p></o:p></p>
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<p class="MsoNormal">the pktgen binary, to something related to a CPU flag (<span style="font-family:"Arial",sans-serif;color:#222222;background:white">RTE_CPUFLAG_RTM flag (Transactional memory).</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I cloned the latest DTS repo, and extracted pktgen <o:p></o:p></p>
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<p class="MsoNormal">from it (it is in the dep/tgen.tgz tar file).<o:p></o:p></p>
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<p class="MsoNormal">My first question is: is this binary created from the <o:p></o:p></p>
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<p class="MsoNormal">official pktgen tree ? (in case it is, which version of pktgen is it?) or is it after applying some patches? (the <o:p></o:p></p>
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<p class="MsoNormal">reason for this question will be clear soon).<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Second: when I try to run it as stand alone and look at the core dump, I see the <o:p></o:p></p>
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<p class="MsoNormal">following:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">./pktgen<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Illegal instruction (core dumped)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">gdb ./pktgen core<o:p></o:p></p>
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<p class="MsoNormal">GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.3) 7.7.1<o:p></o:p></p>
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<p class="MsoNormal">Copyright (C) 2014 Free Software Foundation, Inc.<o:p></o:p></p>
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<p class="MsoNormal">License GPLv3+: GNU GPL version 3 or later <<a href="http://gnu.org/licenses/gpl.html">http://gnu.org/licenses/gpl.html</a>><o:p></o:p></p>
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<p class="MsoNormal">This is free software: you are free to change and redistribute it.<o:p></o:p></p>
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<p class="MsoNormal">There is NO WARRANTY, to the extent permitted by law. Type "show copying"<o:p></o:p></p>
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<p class="MsoNormal">and "show warranty" for details.<o:p></o:p></p>
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<p class="MsoNormal">This GDB was configured as "x86_64-linux-gnu".<o:p></o:p></p>
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<p class="MsoNormal">Type "show configuration" for configuration details.<o:p></o:p></p>
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<p class="MsoNormal">For bug reporting instructions, please see:<o:p></o:p></p>
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<p class="MsoNormal"><<a href="http://www.gnu.org/software/gdb/bugs/">http://www.gnu.org/software/gdb/bugs/</a>>.<o:p></o:p></p>
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<p class="MsoNormal">Find the GDB manual and other documentation resources online at:<o:p></o:p></p>
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<p class="MsoNormal"><<a href="http://www.gnu.org/software/gdb/documentation/">http://www.gnu.org/software/gdb/documentation/</a>>.<o:p></o:p></p>
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<p class="MsoNormal">For help, type "help".<o:p></o:p></p>
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<p class="MsoNormal">Type "apropos word" to search for commands related to "word"...<o:p></o:p></p>
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<p class="MsoNormal">Reading symbols from ./pktgen...done.<o:p></o:p></p>
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<p class="MsoNormal">[New LWP 6639]<o:p></o:p></p>
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<p class="MsoNormal">[Thread debugging using libthread_db enabled]<o:p></o:p></p>
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<p class="MsoNormal">Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".<o:p></o:p></p>
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<p class="MsoNormal">---Type <return> to continue, or q <return> to quit---<o:p></o:p></p>
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<p class="MsoNormal">Core was generated by `./pktgen'.<o:p></o:p></p>
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<p class="MsoNormal">Program terminated with signal SIGILL, Illegal instruction.<o:p></o:p></p>
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<p class="MsoNormal">#0 0x000000000043417d in rte_cpu_get_flag_enabled (feature=6217008,<o:p></o:p></p>
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<p class="MsoNormal"> feature@entry=RTE_CPUFLAG_RTM)<o:p></o:p></p>
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<p class="MsoNormal"> at /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h:303<o:p></o:p></p>
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<p class="MsoNormal">303 /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h: No such file or directory.<o:p></o:p></p>
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<p class="MsoNormal">(gdb) bt<o:p></o:p></p>
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<p class="MsoNormal">#0 0x000000000043417d in rte_cpu_get_flag_enabled (feature=6217008,<o:p></o:p></p>
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<p class="MsoNormal"> feature@entry=RTE_CPUFLAG_RTM)<o:p></o:p></p>
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<p class="MsoNormal"> at /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_cpuflags.h:303<o:p></o:p></p>
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<p class="MsoNormal">#1 0x00000000004341ae in rte_rtm_init ()<o:p></o:p></p>
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<p class="MsoNormal"> at /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_spinlock.h:103<o:p></o:p></p>
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<p class="MsoNormal">#2 0x00000000005d451d in __libc_csu_init ()<o:p></o:p></p>
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<p class="MsoNormal">#3 0x00007fe2fda1aed5 in __libc_start_main (main=0x433400 <main>,<o:p></o:p></p>
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<p class="MsoNormal"> argc=1, argv=0x7ffd0c6a5868, init=0x5d44d0 <__libc_csu_init>,<o:p></o:p></p>
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<p class="MsoNormal"> fini=<optimized out>, rtld_fini=<optimized out>,<o:p></o:p></p>
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<p class="MsoNormal"> stack_end=0x7ffd0c6a5858) at libc-start.c:246<o:p></o:p></p>
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<p class="MsoNormal">#4 0x0000000000435385 in _start ()<o:p></o:p></p>
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<p class="MsoNormal">(gdb)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">- and I get the same issue of "illegal instruction" and the same results also with older <o:p></o:p></p>
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<p class="MsoNormal">official DTS releases, like <a href="https://dpdk.org/browse/tools/dts/snapshot/dts-17.11.tar.xz">https://dpdk.org/browse/tools/dts/snapshot/dts-17.11.tar.xz</a><o:p></o:p></p>
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<p class="MsoNormal">and <a href="https://dpdk.org/browse/tools/dts/snapshot/dts-17.05.tar.xz">https://dpdk.org/browse/tools/dts/snapshot/dts-17.05.tar.xz</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal">Dan <o:p></o:p></p>
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