[DPDK/testpmd Bug 1799] [dpdk-25.11-rc0] ipv4_reassembly/test_send_2K_frames_split_in_4_and_1K_maxflows: Cannot configure device:

[bugzilla@dpdk.org]

http://bugs.dpdk.org/show_bug.cgi?id=1799

            Bug ID: 1799
           Summary: [dpdk-25.11-rc0]
                    ipv4_reassembly/test_send_2K_frames_split_in_4_and_1K_
                    maxflows: Cannot configure device:
           Product: DPDK
           Version: 25.07
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: testpmd
          Assignee: dev@dpdk.org
          Reporter: daxuex.gao@intel.com
  Target Milestone: ---

Environment
===========
DPDK version: 25.11.0-rc0: 2b403dd8fb
OS: Ubuntu Fedora Linux 42/Linux 6.14.0-63.fc42.x86_64
Compiler: gcc version 15.2.1
Hardware platform: Intel(R) Xeon(R) Platinum 8490H
NIC hardware: Intel Corporation Ethernet Controller XXV710 for 25GbE SFP28
[8086:158b]
NIC firmware: 
 driver: vfio-pci
 kdriver: 2.28.10
 firmware-version: 9.55 0x8000fe4c 1.3862.0


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

1.dut:
# dpdk-devbind.py -b vfio-pci  0000:1f:00.0 0000:1f:00.1
# ./x86_64-native-linuxapp-gcc/examples/dpdk-ip_reassembly  -l 1 -n 4 -a
0000:1f:00.0 -a 0000:1f:00.1  --file-prefix=dpdk_380038_20251011153916      -- 
-p 0x1 --maxflows=1024 --flowttl=10s

2.Show the output from the previous commands.
# ./x86_64-native-linuxapp-gcc/examples/dpdk-ip_reassembly  -l 1 -n 4 -a
0000:1f:00.0 -a 0000:1f:00.1  --file-prefix=dpdk_380038_20251011153916      -- 
-p 0x1 --maxflows=1024 --flowttl=10s
EAL: Detected CPU lcores: 240
EAL: Detected NUMA nodes: 4
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/dpdk_380038_20251011153916/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: 1024 hugepages of size 2097152 reserved, but no mounted hugetlbfs found
for that size
EAL: VFIO support initialized
EAL: Using IOMMU type 1 (Type 1)
IP_RSMBL: Creating LPM table on socket 0
IP_RSMBL: Creating LPM6 table on socket 0
IPFRAG: rte_ip_frag_table_create: allocated of 8388736 bytes at socket 0
Initializing port 0 ... Port 0 modified RSS hash function based on hardware
support,requested:0xa38c configured:0x228c
ETHDEV: id=0 offload clash, MULTI_SEGS vs MBUF_FAST_FREE

EAL: Error - exiting with code: 1
Cannot configure device: err=-22, port=0


Expected Result
# ./x86_64-native-linuxapp-gcc/examples/dpdk-ip_reassembly  -l 1 -n 4 -a
0000:1f:00.0 -a 0000:1f:00.1  --file-prefix=dpdk_380038_20251011153916      -- 
-p 0x1 --maxflows=1024 --flowttl=10s
EAL: Detected CPU lcores: 240
EAL: Detected NUMA nodes: 4
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/dpdk_380038_20251011153916/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: 1024 hugepages of size 2097152 reserved, but no mounted hugetlbfs found
for that size
EAL: VFIO support initialized
EAL: Using IOMMU type 1 (Type 1)
IP_RSMBL: Creating LPM table on socket 0
IP_RSMBL: Creating LPM6 table on socket 0
IPFRAG: rte_ip_frag_table_create: allocated of 8388736 bytes at socket 0
Initializing port 0 ... Port 0 modified RSS hash function based on hardware
support,requested:0xa38c configured:0x228c
 Address:3C:FD:FE:CF:33:74
txq=1,0,0

Skipping disabled port 1

IP_RSMBL: Socket 0: adding route 100.10.0.0/16 (port 0)
IP_RSMBL: Socket 0: adding route 100.20.0.0/16 (port 1)
IP_RSMBL: Socket 0: adding route 100.30.0.0/16 (port 2)
IP_RSMBL: Socket 0: adding route 100.40.0.0/16 (port 3)
IP_RSMBL: Socket 0: adding route 100.50.0.0/16 (port 4)
IP_RSMBL: Socket 0: adding route 100.60.0.0/16 (port 5)
IP_RSMBL: Socket 0: adding route 100.70.0.0/16 (port 6)
IP_RSMBL: Socket 0: adding route 100.80.0.0/16 (port 7)
IP_RSMBL: Socket 0: adding route 0101:0101:0101:0101:0101:0101:0101:0101/48
(port 0)
IP_RSMBL: Socket 0: adding route 0201:0101:0101:0101:0101:0101:0101:0101/48
(port 1)
IP_RSMBL: Socket 0: adding route 0301:0101:0101:0101:0101:0101:0101:0101/48
(port 2)
IP_RSMBL: Socket 0: adding route 0401:0101:0101:0101:0101:0101:0101:0101/48
(port 3)
IP_RSMBL: Socket 0: adding route 0501:0101:0101:0101:0101:0101:0101:0101/48
(port 4)
IP_RSMBL: Socket 0: adding route 0601:0101:0101:0101:0101:0101:0101:0101/48
(port 5)
IP_RSMBL: Socket 0: adding route 0701:0101:0101:0101:0101:0101:0101:0101/48
(port 6)

Checking link status
done
Port 0 Link up at 10 Gbps FDX Autoneg
IP_RSMBL: entering main loop on lcore 1
IP_RSMBL:  -- lcoreid=1 portid=0
^C -- lcoreid=1 portid=0 frag tbl stat:


Regression
Is this issue a regression: (Y/N)Y

Bad commit:
commit fdb840367cf0d6abeb17b05623679b8d1ea4c902
Author: Morten Brørup <mb@smartsharesystems.com>
Date:   Sun Aug 3 19:42:18 2025 +0000

    ethdev: reject conflicting Tx offload configurations

    When an ethdev port is configured for fast mbuf release, the driver can
    use a Tx burst function relying on the fast mbuf release preconditions.
    Thus, also configuring this port or a queue on the port for transmitting
    segmented packets is prohibited.
    Checks for these conflicting configurations have been added to the ethdev
    library, so the drivers don't have to implement them.

    Signed-off-by: Morten Brørup <mb@smartsharesystems.com>
    Acked-by: Bruce Richardson <bruce.richardson@intel.com>
    Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
    Acked-by: Konstantin Ananyev <konstantin.ananyev@huawei.com>

lib/ethdev/rte_ethdev.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)

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