BlueField-2 DPU connect issue

Hi all,

ubuntu@localhost:~$ sudo mlnx-sf -a show

SF Index: pci/0000:03:00.0/491520
Parent PCI dev: 0000:03:00.0
Representor netdev: en3f0pf0sf0
Function HWADDR: 02:cc:d4:9d:59:c8
Auxiliary device: mlx5_core.sf.2
netdev: enp3s0f0s0
RDMA dev: mlx5_2

ubuntu@localhost:~$ ifconfig enp3s0f0s0
enp3s0f0s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.10.2 netmask 255.255.255.0 broadcast 10.0.10.255
inet6 fe80::cc:d4ff:fe9d:59c8 prefixlen 64 scopeid 0x20
ether 02:cc:d4:9d:59:c8 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 316 bytes 39238 (39.2 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ubuntu@localhost:~$

When I ping the host from enp3s0f0s0, and do tcpdump on en3f0pf0sf0.
No package could be caputred.

Is there any other configuration to disable this?
Thanks.

=====
I want to add that the tx of enp3s0f0s0 and rx of en3f0pf0sf0 grows when ping.

ubuntu@localhost:~$ ifconfig en3f0pf0sf0
en3f0pf0sf0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 36:eb:43:4b:23:4a txqueuelen 1000 (Ethernet)
RX packets 346 bytes 41038 (41.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ubuntu@localhost:~$ ifconfig enp3s0f0s0
enp3s0f0s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.10.2 netmask 255.255.255.0 broadcast 10.0.10.255
inet6 fe80::cc:d4ff:fe9d:59c8 prefixlen 64 scopeid 0x20
ether 02:cc:d4:9d:59:c8 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 346 bytes 41038 (41.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ubuntu@localhost:~$

Hi wangyw,

Thank you for posting your inquiry to the NVIDIA Networking Forums.

You should be able to capture packets directly from the physical interface representor (IE: ARM-side p0, p1 interface).

The data path will change depending on your configuration, and which mode of operation you have configured.
Please review the following document (‘Modes of Operation’) for more details about the data path in each mode of operation: Modes of Operation - BlueField DPU OS 3.8.5 - NVIDIA Networking Docs

If you need further assistance, please open a support case at: https://support.mellanox.com/s/

Best regards,
NVIDIA Networking Support

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