Hi, On Sat, May 24, 2025 at 01:50:45AM +0100, Charles Oluwaseun Oluboyo wrote: > Hello, > > I have a ConnectX-4 dual-100Gbps NIC that works with DPDK versions > 24.03 and 24.07 but not with 24.11 or 25.03. > > 0000:04:00.0 'MT27700 Family [ConnectX-4] 1013' numa_node=0 > if=enp4s0f0np0 drv=mlx5_core unused=vfio-pci > 0000:04:00.1 'MT27700 Family [ConnectX-4] 1013' numa_node=0 > if=enp4s0f1np1 drv=mlx5_core unused=vfio-pci > > Setting the log levels to debug, the newer versions are unable to > configure more than one (1) description on any queue: > > ETHDEV: Invalid value for nb_tx_desc(=1024), should be: <= 1, >= 0, > and a product of 1 > > Whereas using the older version, I am able to set a larger number of > descriptors. Tried 512, 1024, 2048 and 4096. > > ********************* Infos for port 0 ********************* > MAC address: EC:0D:9A:35:1A:16 > Device name: 04:00.0 > Driver name: mlx5_pci > Firmware-version: 12.24.1000 > Devargs: > Connect to socket: 0 > memory allocation on the socket: 0 > Link status: up > Link speed: 100 Gbps > Link duplex: full-duplex > Autoneg status: On > MTU: 2030 > Promiscuous mode: enabled > Allmulticast mode: disabled > Maximum number of MAC addresses: 128 > Maximum number of MAC addresses of hash filtering: 0 > VLAN offload: > strip off, filter off, extend off, qinq strip off > Hash key size in bytes: 40 > Redirection table size: 4 > Supported RSS offload flow types: > ipv4 ipv4-frag ipv4-tcp ipv4-udp ipv4-other ipv6 > ipv6-frag ipv6-tcp ipv6-udp ipv6-other ipv6-ex > ipv6-tcp-ex ipv6-udp-ex esp l4-dst-only l4-src-only > l3-dst-only l3-src-only > Minimum size of RX buffer: 32 > Maximum configurable length of RX packet: 65536 > Maximum configurable size of LRO aggregated packet: 65280 > Current number of RX queues: 4 > Max possible RX queues: 1024 > Max possible number of RXDs per queue: 65535 > Min possible number of RXDs per queue: 0 > RXDs number alignment: 1 > Current number of TX queues: 4 > Max possible TX queues: 1024 > Max possible number of TXDs per queue: 65535 > Min possible number of TXDs per queue: 0 > TXDs number alignment: 1 > Max segment number per packet: 40 > Max segment number per MTU/TSO: 40 > Device capabilities: 0x10( FLOW_SHARED_OBJECT_KEEP ) > Switch name: 04:00.0 > Switch domain Id: 0 > Switch Port Id: 65535 > Device error handling mode: none > Device private info: > none > > Is this a known issue? Please, what should I do next? > > Oluwaseun
One of the patches merged to 24.11 introduced an issue with queues descriptor limits on older NICs. A patch with a fix for that is pending for merge to 25.07. Would you be able apply the following patches and test on your side? - https://patches.dpdk.org/project/dpdk/patch/20250424133128.133900-1-viachesl...@nvidia.com/ - https://patches.dpdk.org/project/dpdk/patch/20250514075530.419423-1-viachesl...@nvidia.com/ Best regards, Dariusz Sosnowski
