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<base href="https://bugs.dpdk.org/">
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<body><table border="1" cellspacing="0" cellpadding="8" class="bz_new_table">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - Invalid pcapng timestamp"
href="https://bugs.dpdk.org/show_bug.cgi?id=1291">1291</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Invalid pcapng timestamp
</td>
</tr>
<tr>
<th>Product</th>
<td>DPDK
</td>
</tr>
<tr>
<th>Version</th>
<td>23.11
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>UNCONFIRMED
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>Normal
</td>
</tr>
<tr>
<th>Component</th>
<td>other
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dev@dpdk.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>joonmo.koo@ericsson.com
</td>
</tr>
<tr>
<th>Target Milestone</th>
<td>---
</td>
</tr></table>
<p>
<div class="bz_comment_block">
<pre class="bz_comment_text">Hi,
rte_pcapng_copy() is called with rte_get_tsc_cycles().
And, if pcapng isn't initialized, pcapng_init() is called.
rte_get_tsc_cyles() is called during pcapng_init for base time.
But, cycles on pcapng_init() is later cycle than parameter of rte_pcapng_copy()
in this case.
So, delta value of pcapng_tsc_to_ns() will be negative value.
But, delta value type is uint64_t.
It will cause incorrect timestamp.
Maybe, I'm thinking that pcapng_init() should be called before
rte_pcapng_copy().
Joonmo Koo
</pre>
</div>
</p>
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