[DPDK/testpmd Bug 1815] [dpdk-25.11] cpfl_vf_representor_rte_flow/port_representor_probe_scan: port attach failed

[DPDK/testpmd Bug 1815] [dpdk-25.11] cpfl_vf_representor_rte_flow/port_representor_probe_scan: port attach failed

[bugzilla]

http://bugs.dpdk.org/show_bug.cgi?id=1815

            Bug ID: 1815
           Summary: [dpdk-25.11]
                    cpfl_vf_representor_rte_flow/port_representor_probe_sc
                    an: port attach failed
           Product: DPDK
           Version: 25.07
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: testpmd
          Assignee: dev@dpdk.org
          Reporter: songx.jiale@intel.com
  Target Milestone: ---

Environment
===========
dpdk-25.11.0-rc1: 39b54f2dcf44ad1f91eabc7080cd5dea763607fd
OS: Ubuntu 24.04.3 LTS/6.8.0-79-generic
Compiler:  gcc version 13.3.0
Hardware platform: Hardware platform: Intel(R) Xeon(R) 6767P  CPU @ 2.4GHz
NIC hardware: mev
APF: Intel Corporation Device [8086:1452]
CPF: Intel Corporation Device [8086:1453]
NIC firmware:
ci-ts.release.2.0.0.11126
idpf-0.0.772

Test Setup
Steps to reproduce
==================
1. create 2 vfs on apf
echo 2 > /sys/bus/pci/devices/0000\:15\:00.0/sriov_numvfs

2. unbind cpf
./usertools/dpdk-devbind.py -u 0000:15:00.6

3. start testpmd without any port
x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-3 -n 4 -- -i

4. bind cpf to vfio-pci
./usertools/dpdk-devbind.py -b 0000:15:00.6

5. testpmd attach port
testpmd> port attach
0000:15:00.6,vport=[0-1],representor=vf[0,1],flow_parser=./refpkg.json 


Results: 
========
Attaching a new port...
EAL: Using IOMMU type 1 (Type 1)
CPFL_INIT: cpfl_flow_init(): flow module is not initialized
Error during enabling promiscuous mode for port 0: Operation not supported -
ignore
Port 0 is attached. Now total ports is 1
Done

Expected Result:
================
Attaching a new port...
EAL: Using IOMMU type 1 (Type 1)
CPFL_DRIVER: cpfl_handle_cpchnl_event_msg():  unknown event received 6
CPFL_DRIVER: cpfl_handle_cpchnl_event_msg():  unknown event received 6
Error during enabling promiscuous mode for port 0: Operation not supported -
ignore
Port 0 is attached. Now total ports is 1
Done
Error during enabling promiscuous mode for port 1: Operation not supported -
ignore
Port 1 is attached. Now total ports is 2
Done
Error during enabling promiscuous mode for port 2: Operation not supported -
ignore
Port 2 is attached. Now total ports is 3
Done
Error during enabling promiscuous mode for port 3: Operation not supported -
ignore
Port 3 is attached. Now total ports is 4
Done

bad commit:
===========
commit 12c2405989f6fb002a1c45e892b82897d124d10a
Author: Shani Peretz <shperetz@nvidia.com>
Date:   Sun Jul 13 09:34:17 2025 +0300

    app/testpmd: canonicalize short PCI name format

    when providing short format PCI device names in devargs
    (e.g. "08:00:0") it is converted and stored as long format.
    however when attach_port is called from testpmd, the user might
    provide a short format, which will be passed to find_device with
    a comparison function that simply compare strings, which will
    cause find_device not to find any device.

    This fix canonicalize the user provided string before it is being
    passed to find_device.

    Signed-off-by: Shani Peretz <shperetz@nvidia.com>

 app/test-pmd/meson.build |  2 +-
 app/test-pmd/testpmd.c   | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions, 1 deletion

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