DOCA ethernet send sample can not send packet on wire

Infrastructure & Networking BlueField
1

Hi There,

I am using Bluefield-2 and DOCA 24.43.1014 to run the eth_txq_send_ethernet_frames sample as:

./doca_eth_txq_send_ethernet_frames -d mlx5_0

The mlx5_0 is the p0 port “
p0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::bace:f6ff:fed1:3e10 prefixlen 64 scopeid 0x20
ether b8:ce:f6:d1:3e:10 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 127 bytes 16591 (16.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
”
However, after the execution of the sample with successful send task message:
[23:57:48:530609][12208][DOCA][INF][eth_txq_send_ethernet_frames_sample.c:78][task_send_common_cb] Send task user data is 0x43210
[23:57:48:530654][12208][DOCA][INF][eth_txq_send_ethernet_frames_sample.c:94][task_send_common_cb] Sent a regular packet of size 1500 successfully
[23:57:48:533812][12208][DOCA][INF][eth_txq_send_ethernet_frames_main.c:185][main] Sample finished successfully“,

I tried to print the statistic on peer port, but there was no packet received. I have also run the ethtool in the mellanox folder, there was no new packet sent. The port has been set to pure layer 2 without any IP.

Is there any configuration missing? How to verify the packet has been truly sent out on the wire?

Thanks.

2

Use the command below to monitor in another terminal

mlnx_perf -i eth2

( assume eth2 is the eth interface of the mlx5_0)

when run

./doca_eth_txq_send_ethernet_frames -d mlx5_0

once,

mlnx_perf should show something like:

tx_vport_broadcast_packets: 1
  tx_vport_broadcast_bytes: 1,500 Bps            = 0.1 Mbps
            tx_packets_phy: 1
              tx_bytes_phy: 1,504 Bps            = 0.1 Mbps
          tx_broadcast_phy: 1
     ...
            tx_prio0_bytes: 1,504 Bps            = 0.1 Mbps
          tx_prio0_packets: 1
     ...

Run mlnx_perf on the receiving side too.

And something like below should show:

  rx_vport_broadcast_bytes: 1,504 Bps            = 0.1 Mbps
            rx_packets_phy: 1
              rx_bytes_phy: 1,504 Bps            = 0.1 Mbps
          rx_broadcast_phy: 1
 rx_1024_to_1518_bytes_phy: 1
...
            rx_prio0_bytes: 1,504 Bps            = 0.1 Mbps
          rx_prio0_packets: 1