我遇到了 DPDK MLX5 探测问题。
- 我已经安装了 mlx5/ofed 驱动程序
- 我已经加载了内核模块。
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: No available hugepages reported in hugepages-2048kB
EAL: Probing VFIO support...
EAL: Probe PCI driver: mlx5_pci (15b3:1013) device: 0000:5e:00.0 (socket 0)
mlx5_pci: unable to recognize master/representors on the multiple IB devices
common_mlx5: Failed to load driver = mlx5_pci.
EAL: Requested device 0000:5e:00.0 cannot be used
EAL: Bus (pci) probe failed.
至于“未能加载 mlx5_pci”驱动程序，我可以看到 mlx5_core 驱动程序已加载。
dpdk-devbind.py -s
Network devices using kernel driver
===================================
0000:5e:00.0 'MT27700 Family [ConnectX-4]' if=enp94s0 drv=mlx5_core unused=
我假设他们两个是一样的？无法识别多个 IB 设备上的主/代表是什么意思？
我的配置是：CentOS 7.9、Linux Kernel 5.12、OFED 4.9 (LTS)、DPDK 21.02
lsmod | egrep 'mlx|ib'
libceph 413696 1 ceph
ib_isert 49152 0
iscsi_target_mod 315392 1 ib_isert
ib_srpt 61440 0
target_core_mod 372736 3 iscsi_target_mod,ib_srpt,ib_isert
ib_srp 61440 0
scsi_transport_srp 28672 1 ib_srp
ib_iser 45056 0
ib_umad 36864 0
rdma_cm 114688 6 rpcrdma,ib_srpt,ib_srp,ib_iser,ib_isert,rdma_ucm
ib_ipoib 114688 0
libiscsi 65536 1 ib_iser
scsi_transport_iscsi 126976 2 ib_iser,libiscsi
ib_cm 122880 4 rdma_cm,ib_ipoib,ib_srpt,ib_srp
mlx5_ib 331776 0
mlx4_ib 196608 0
ib_uverbs 147456 3 mlx4_ib,rdma_ucm,mlx5_ib
ib_core 356352 14 rdma_cm,ib_ipoib,rpcrdma,mlx4_ib,ib_srpt,ib_srp,iw_cm,ib_iser,ib_umad,ib_isert,rdma_ucm,ib_uverbs,ml
5_ib,ib_cm
libcrc32c 16384 5 nf_conntrack,nf_nat,nf_tables,xfs,libceph
mlx4_en 118784 0
mlx4_core 319488 2 mlx4_ib,mlx4_en
mlx5_core 700416 1 mlx5_ib
mlxfw 32768 1 mlx5_core
pci_hyperv_intf 16384 1 mlx5_core
ptp 28672 3 igb,mlx4_en,mlx5_core
libahci 36864 1 ahci
libata 253952 2 libahci,ahci