25 Sep
2025
25 Sep
'25
10:39 a.m.
On Thu, Sep 25, 2025 at 11:30 AM +02, Lorenzo Bianconi wrote:
Introduce bpf_xdp_metadata_rx_checksum() kfunc in order to load the HW RX cheksum results in the eBPF program binded to the NIC. Implement xmo_rx_checksum callback for veth and ice drivers.
What are going to do with HW RX checksum once XDP prog can access it?
Hi Jakub,
I guess there are multiple use-cases for bpf_xdp_metadata_rx_checksum() kfunc. The first the I have in mind is when packets are received by an af_xdp application. In this case I think we currently do not have any way to check if the packet checksum is correct, right? I think Jesper has other use-cases in mind, I will let him comment here.
Regards, Lorenzo