From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [Bug 1291] Invalid pcapng timestamp
Date: Thu, 21 Sep 2023 05:01:19 +0000 [thread overview]
Message-ID: <bug-1291-3@http.bugs.dpdk.org/> (raw)
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https://bugs.dpdk.org/show_bug.cgi?id=1291
Bug ID: 1291
Summary: Invalid pcapng timestamp
Product: DPDK
Version: 23.11
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: other
Assignee: dev@dpdk.org
Reporter: joonmo.koo@ericsson.com
Target Milestone: ---
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
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