[dpdk-dev] [Bug 571] [dpdk-20.11]packet_capture: can't start pdump.

[dpdk-dev] [Bug 571] [dpdk-20.11]packet_capture: can't start pdump.

[bugzilla]

https://bugs.dpdk.org/show_bug.cgi?id=571

            Bug ID: 571
           Summary: [dpdk-20.11]packet_capture: can't start pdump.
           Product: DPDK
           Version: 20.11
          Hardware: All
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: testpmd
          Assignee: dev@dpdk.org
          Reporter: junx.w.zhou@intel.com
  Target Milestone: ---

DPDK version: 
 20.11-rc3 60af9bd63dd46ebd709371e88b4096fd2bc048cf
OS: CentOS Linux release 8.2.2004
Compiler: gcc (GCC) 8.3.1 20191121 (Red Hat 8.3.1-5)
Hardware platform: Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz
NIC hardware: Fortville_25g(Ethernet Controller XXV710 for 25GbE SFP28 158b)
NIC firmware: 
driver: i40e
version: 2.13.10
firmware-version: 8.00 0x80008c1a 1.2766.0


Test Setup
Steps to reproduce
List the steps to reproduce the issue.

1.usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:05:00.0 0000:05:00.1
2.x86_64-native-linuxapp-gcc/app/dpdk-testpmd  -l 1,2 -n 4 -w 0000:05:00.0 -w
0000:05:00.1  --file-prefix=test    -- -i --port-topology=chained
3.set fwd io
4.start
5.new session:x86_64-native-linuxapp-gcc/app/dpdk-pdump  -v --file-prefix=test
-- --pdump 
'port=0,queue=*,tx-dev=/tmp/pdumpLog/pdump-tx.pcap,rx-dev=/tmp/pdumpLog/pdump-rx.pcap'


Show the output from the previous commands.

EAL: Detected 88 lcore(s)
EAL: Detected 2 NUMA nodes
EAL: RTE Version: 'DPDK 20.11.0-rc1'
EAL: Multi-process socket /var/run/dpdk/test/mp_socket_470986_13014e4b81e444
EAL: Selected IOVA mode 'VA'
EAL: Probing VFIO support...
EAL: VFIO support initialized
EAL:   using IOMMU type 1 (Type 1)
EAL: Probe PCI driver: net_i40e (8086:158b) device: 0000:05:00.0 (socket 0)
EAL: Probe PCI driver: net_i40e (8086:158b) device: 0000:05:00.1 (socket 0)
RING: Cannot reserve memory
EAL: Error - exiting with code: 1
  Cause: File exists:create_mp_ring_vdev:673


Expected Result
Explain what is the expected result in text or as an example output:

no error log


Regression
Is this issue a regression: (Y)

Version the regression was introduced: 

commit d23d73d088c1bdab8385fa64cd397ccedc725472
Author: Thomas Monjalon <thomas@monjalon.net>
Date: Thu Oct 29 08:17:35 2020 +0100

net/pcap: switch Rx timestamp to dynamic mbuf field

The mbuf timestamp is moved to a dynamic field
in order to allow removal of the deprecated static field.
The related mbuf flag is also replaced.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: David Marchand <david.marchand@redhat.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>

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