Re: mlx5_common: No Verbs device matches PCI device 0000:01:00.1

[Erez Ferber <erezferber@gmail.com>]

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I assume your tree assumes there's a ConnectX-3 device installed, while the
kernel driver doesnt support it for quite a while
I would suggest re-compiling while excluding mlx4 PMD support.

Thanks,
Erez

On Tue, 5 Apr 2022 at 23:54, fwefew 4t4tg <7532yahoo@gmail.com> wrote:

> Mr. Ferber, much appreciated. I knew this metal box came to me with two
> mellanox NICs bonded. I used their util to unbond it, but alas it did not
> do it all the way. The /etc/network/interfaces was bad. I fixed the config
> and rebooted.
>
> Voila. Success. ibv_devinfo now shows two devices. And the DPDK app runs.
>
> Your point about bonding nudged me to double check.
>
> *Now, on a second machine where I believe I have done everything I did on
> the first machine*, running the DPDK application continues to look for
> the wrong driver:
>
> EAL: Detected CPU lcores: 16
> EAL: Detected NUMA nodes: 1
> EAL: Detected shared linkage of DPDK
> EAL: libmlx4.so.1: cannot open shared object file: No such file or
> directory
> EAL: FATAL: Cannot init plugins
> EAL: Cannot init plugins
>
> Somehow I fixed this on the first machine, but I cannot duplicate success
> on the second machine.
>
> Both machines report two devices; both machines show similar ifconifgs
>
>     device             node GUID
>
>     ------          ----------------
>
>     mlx5_0          0c42a103007ea9b8
>
>     mlx5_1          0c42a103007ea9b9
>
>
>     device             node GUID
>
>     ------          ----------------
>
>     mlx5_0          0c42a103007ea3ec
>
>     mlx5_1          0c42a103007ea3ed
>
>
> root@server:~/Dev/reinvent/scripts# ibv_devinfo
>
> hca_id: mlx5_0
>
> transport: InfiniBand (0)
>
> fw_ver: 14.32.1010
>
> node_guid: 0c42:a103:007e:a3ec
>
> sys_image_guid: 0c42:a103:007e:a3ec
>
> vendor_id: 0x02c9
>
> vendor_part_id: 4117
>
> hw_ver: 0x0
>
> board_id: MT_2420110034
>
> phys_port_cnt: 1
>
> port: 1
>
> state: PORT_ACTIVE (4)
>
> max_mtu: 4096 (5)
>
> active_mtu: 1024 (3)
>
> sm_lid: 0
>
> port_lid: 0
>
> port_lmc: 0x00
>
> link_layer: Ethernet
>
>
> hca_id: mlx5_1
>
> transport: InfiniBand (0)
>
> fw_ver: 14.32.1010
>
> node_guid: 0c42:a103:007e:a3ed
>
> sys_image_guid: 0c42:a103:007e:a3ec
>
> vendor_id: 0x02c9
>
> vendor_part_id: 4117
>
> hw_ver: 0x0
>
> board_id: MT_2420110034
>
> phys_port_cnt: 1
>
> port: 1
>
> state: PORT_ACTIVE (4)
>
> max_mtu: 4096 (5)
>
> active_mtu: 1024 (3)
>
> sm_lid: 0
>
> port_lid: 0
>
> port_lmc: 0x00
>
> link_layer: Ethernet
>
>
>
>
>
> ibv_devinfo
>
> hca_id: mlx5_0
>
> transport: InfiniBand (0)
>
> fw_ver: 14.32.1010
>
> node_guid: 0c42:a103:007e:a9b8
>
> sys_image_guid: 0c42:a103:007e:a9b8
>
> vendor_id: 0x02c9
>
> vendor_part_id: 4117
>
> hw_ver: 0x0
>
> board_id: MT_2420110034
>
> phys_port_cnt: 1
>
> port: 1
>
> state: PORT_ACTIVE (4)
>
> max_mtu: 4096 (5)
>
> active_mtu: 1024 (3)
>
> sm_lid: 0
>
> port_lid: 0
>
> port_lmc: 0x00
>
> link_layer: Ethernet
>
>
> hca_id: mlx5_1
>
> transport: InfiniBand (0)
>
> fw_ver: 14.32.1010
>
> node_guid: 0c42:a103:007e:a9b9
>
> sys_image_guid: 0c42:a103:007e:a9b8
>
> vendor_id: 0x02c9
>
> vendor_part_id: 4117
>
> hw_ver: 0x0
>
> board_id: MT_2420110034
>
> phys_port_cnt: 1
>
> port: 1
>
> state: PORT_ACTIVE (4)
>
> max_mtu: 4096 (5)
>
> active_mtu: 1024 (3)
>
> sm_lid: 0
>
> port_lid: 0
>
> port_lmc: 0x00
>
> link_layer: Ethernet
>
> On Tue, Apr 5, 2022 at 1:00 PM Erez Ferber <erezferber@gmail.com> wrote:
>
>> Hi,
>>
>> Based on your output, the ConnectX-4LX device is configured in LAG mode
>> managed via the kernel bonding scripts. In this mode, both physical
>> functions share a single port (mlx5_bond_0). You should only probe the
>> first PCI BDF - 01:00.0, not the 2nd one.
>>
>> By the way, the --dpdk installation flag should not be necessary, it is
>> an old flag keps for Mellanox OFED builds lower than 5.x.
>>
>> Regards,
>> Erez
>>
>> On Tue, 5 Apr 2022 at 19:17, fwefew 4t4tg <7532yahoo@gmail.com> wrote:
>>
>>> I built the current version of DPDK directly from dpdk.org after I
>>> installed the current OFED Mellanox driver set:
>>>
>>> * MLNX_OFED_LINUX-5.5-1.0.3.2-ubuntu20.04-x86_64.iso
>>>
>>> with ./install --dpdk
>>>
>>> I am using a Mellanox Technologies MT27710 Family [ConnectX-4 Lx] which
>>> is Ethernet only; there is no IB mode for this NIC. This is a MT_2420110034
>>> board. However, when I run dpdk-testpmd I see "No Verbs device matches PCI
>>> device 0000:01:00.1, are kernel drivers loaded?"
>>>
>>> EAL: Detected CPU lcores: 16
>>> EAL: Detected NUMA nodes: 1
>>> EAL: Detected static linkage of DPDK
>>> EAL: Selected IOVA mode 'PA'
>>> EAL: No free 2048 kB hugepages reported on node 0
>>> EAL: VFIO support initialized
>>> EAL: Probe PCI driver: mlx5_pci (15b3:1015) device: 0000:01:00.1 (socket
>>> 0)
>>> mlx5_common: No Verbs device matches PCI device 0000:01:00.1, are kernel
>>> drivers loaded?
>>> mlx5_common: Verbs device not found: 01:00.1
>>> mlx5_common: Failed to initialize device context.
>>> EAL: Requested device 0000:01:00.1 cannot be used
>>> EAL: Bus (pci) probe failed.
>>>
>>> As far as I can see all the kernel modules are loaded:
>>>
>>> lsmod | egrep "(ib|mlx)" | sort
>>> ib_cm                  53248  2 rdma_cm,ib_ipoib
>>> ib_core               368640  8
>>> rdma_cm,ib_ipoib,iw_cm,ib_umad,rdma_ucm,ib_uverbs,mlx5_ib,ib_cm
>>> ib_ipoib              135168  0
>>> ib_umad                24576  0
>>> ib_uverbs             139264  2 rdma_ucm,mlx5_ib
>>> libahci                36864  1 ahci
>>> libcrc32c              16384  2 btrfs,raid456
>>> mlx5_core            1634304  1 mlx5_ib
>>> mlx5_ib               397312  0
>>> mlx_compat             69632  11
>>> rdma_cm,ib_ipoib,mlxdevm,iw_cm,ib_umad,ib_core,rdma_ucm,ib_uverbs,mlx5_ib,ib_cm,mlx5_core
>>> mlxdevm               172032  1 mlx5_core
>>> mlxfw                  32768  1 mlx5_core
>>> pci_hyperv_intf        16384  1 mlx5_core
>>> psample                20480  1 mlx5_core
>>> tls                    94208  2 bonding,mlx5_core
>>>
>>> root@dc-c3-small-x86-01:~/Dev/reinvent/scripts# mst status -v
>>> MST modules:
>>> ------------
>>>     MST PCI module is not loaded
>>>     MST PCI configuration module loaded
>>> PCI devices:
>>> ------------
>>> DEVICE_TYPE             MST                           PCI       RDMA
>>>        NET                       NUMA
>>> ConnectX4LX(rev:0)      /dev/mst/mt4117_pciconf0.1    01:00.1
>>> mlx5_bond_0     net-bond0                 -1
>>>
>>> ConnectX4LX(rev:0)      /dev/mst/mt4117_pciconf0      01:00.0
>>> mlx5_bond_0     net-bond0                 -1
>>>
>>

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