Re: PF_RING + bridge continue
Eitan Michaelson <[email protected]> Sun, 14 Jul 2019 20:55:24 +0300
| Newsgroups | gmane.linux.ntop.devel |
|---|---|
| Message-ID | <[email protected]> |
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<p><br>
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<p>Looks like after the first packet is drooped there is no way for
my application to continue and receive packets.</p>
<p>As long as there are no doped packets all is OK, the first drop
practically breaks the application.</p>
<p>It does not matter if pfring_recv() is blocking or not</p>
<p><br>
</p>
<p>[ 679.175760] [PF_RING] Welcome to PF_RING 7.5.0 ($Revision:
unknown$) // Custom kernel<br>
[ 679.175760] (C) 2004-17 ntop.org<br>
[ 679.185328] LINUX_VERSION_CODE 00040E7B<br>
[ 679.189173] [PF_RING] Min # ring slots 4096<br>
[ 679.193358] [PF_RING] Slot version 17<br>
[ 679.197368] [PF_RING] Capture TX Yes [RX+TX]<br>
[ 679.202183] [PF_RING] IP Defragment No<br>
[ 679.206208] NET: Registered protocol family 27<br>
[ 679.210679] [PF_RING] pf_ring initialized correctly</p>
<p><br>
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<br>
<p><br>
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<div class="moz-cite-prefix">On 14/07/2019 19:38, Eitan Michaelson
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:[email protected]">
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<p>Hello, <br>
</p>
<p><br>
</p>
<p>After some more testing it looks like it might have nothing to
do with PF_RING attached to a bridge.</p>
<p>My test is sending a 1024 bytes UDP packet at a fast rate
(about 110,000 packets per second) to a small old Linux</p>
<p>box running the PF_RING enabled process. </p>
<p><br>
</p>
<p>The process is pending on pfring_recv() waiting to get new
packets on br0 .<br>
</p>
<p><br>
</p>
<p>What I was able to see is that at some point after the test has
started, </p>
<p>the drops count (got it from pfring_stats()) went up rapidly.<br>
</p>
<p>while pfring_recv() was pending forever and not getting
triggered to read more packets.<br>
</p>
<p><br>
</p>
<p>What did I do wrong?<br>
Thanks</p>
<p>Eitan.</p>
<p><br>
</p>
<br>
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