Thanks for the bug report.
I opened up a new issue for investigation and possible fix.
https://github.com/appneta/tcpreplay/issues/424
<https://github.com/appneta/tcpreplay/issues/424>
Fred.
> On Nov 2, 2017, at 8:52 AM, ken adey <ken.a...@cyglass.com> wrote:
>
>
> Version information:
>
> SYS-E300-8D:~$ /usr/local/bin/tcpreplay -V
> Warning: May need to run as root to get access to all network interfaces.
> tcpreplay version: 4.2.5 (build git:v4.2.5)
> Copyright 2013-2017 by Fred Klassen <tcpreplay at appneta dot com> -
> AppNeta
> Copyright 2000-2012 by Aaron Turner <aturner at synfin dot net>
> The entire Tcpreplay Suite is licensed under the GPLv3
> Cache file supported: 04
> Not compiled with libdnet.
> Compiled against libpcap: 1.5.3
> 64 bit packet counters: enabled
> Verbose printing via tcpdump: enabled
> Packet editing: disabled
> Fragroute engine: disabled
> Default injection method: PF_PACKET send()
> Optional injection method: netmap
>
>
> Command line used:
>
> sudo /usr/local/bin/tcpreplay --intf1=eth7 -tK --loop 2 --unique-ip
> --stats=0 --netmap ./tcpreplay-4.2.5/test/test.pcap
>
>
> Platform:
>
> Distribution: Ubuntu 14.04 (trusty)
>
> Kernel version: Linux version 4.4.0-31-generic (buildd@lgw01-43) (gcc
> version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) ) #50~14.04.1-Ubuntu SMP Wed
> Jul 13 01:07:32 UTC 2016
>
>
> Make & model of the network card:
>
> Intel D-1500 SoC
>
>
> Description of problem:
>
> Using netmap mode and the included test.pcap file, tcpreplay appears to
> hang when --loop argument is greater than 1:
>
> SYS-E300-8D:~$ sudo /usr/local/bin/tcpreplay --intf1=eth7 -tK --loop
> 2 --unique-ip --stats=0 --netmap ./tcpreplay-4.2.5/test/ test.pcap
> Switching network driver for eth7 to netmap bypass mode... done!
> File Cache is enabled
> Test start: 2017-11-02 11:05:40.699585 ...
> Loop 1 of 2...
>
> Running "top" shows tcpreplay using 100% of the cpu.
>
> Attempting to use Ctrl C to stop it fails:
>
> ^C User interrupt...
> sendpacket_abort
> ^C User interrupt...
> sendpacket_abort
>
>
> Running nearly the same command above with a --loop value of 1 works fine:
>
> SYS-E300-8D:~$ sudo /usr/local/bin/tcpreplay --intf1=eth7 -tK --loop
> 1 --netmap ./tcpreplay-4.2.5/test/test.pcap
> Switching network driver for eth7 to netmap bypass mode... done!
> File Cache is enabled
> Actual: 141 packets (62704 bytes) sent in 0.000154 seconds
> Rated: 407168831.1 Bps, 3257.35 Mbps, 915584.41 pps
> Flows: 37 flows, 240259.74 fps, 140 flow packets, 1 non-flow
> Statistics for network device: eth7
> Successful packets: 141
> Failed packets: 0
> Truncated packets: 0
> Retried packets (ENOBUFS): 0
> Retried packets (EAGAIN): 0
> Switching network driver for eth7 to normal mode... done!
>
> Thanks.
>
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