Rte_eth_rx_burst function only can receive 1024 packets on Bluefield2

Infrastructure & Networking BlueField
1

Hi,

I’m currently working with a DOCA Flow program on a BlueField2 DPU, using DOCA SDK version 2.8.0081, I am trying to forword TCP packets to RSS and parse packet headers.

I configured ovs bridge:

Bridge ovsbr2
    Port ovsbr2
        Interface ovsbr2
            type: internal
    Port p1
        Interface p1
    Port en3f1pf1sf0
        Interface en3f1pf1sf0
    Port pf1hpf
        Interface pf1hpf
Bridge ovsbr1
    Port ovsbr1
        Interface ovsbr1
            type: internal
    Port en3f0pf0sf88
        Interface en3f0pf0sf88
    Port p0
        Interface p0
    Port pf0hpf
        Interface pf0hpf
    Port en3f0pf0sf0
        Interface en3f0pf0sf0

I want to parse the header of the packet received by en3f0pf0sf88

I use nb_packets = rte_eth_rx_burst(ingress_port, queue_index, packets, PACKET_BURST); in a for loop to receive packets cyclically in my code, but it only receives 1024 packets, and after that nb_packets stays at 0. Even though the interface en3f0pf0sf88 actually continues to receive packets.

Has anyone encountered a similar issue or could provide some insights on this?

Thanks in advance!

2

Hi,

This could potentially be caused by numerous factors, such as buffer limitations, configurations, packet drain due to specific code issues, etc.
Please try reproducing this issue using dpdk-testpmd instead of custom applications.
If the issue still reproduces on testpmd, please open a case with enterprisesupport@nvidia.com, and it will be handles according to entitlement.

Thanks,
Jonathan.

3

I see. Thanks for the reply!