Re: Redirect to AF_XDP socket not working with bond interface in native mode

Apologies. The kernel I am testing this on is-

5.14.0-5.14.0-162.18.1.el9_1

On Tue, Dec 19, 2023 at 4:15 PM Prashant Batra <[email protected]> wrote:
>
> Hi,
>
> I am new to XDP and exploring it's working with different interface
> types supported in linux. One of my use cases is to be able to receive
> packets from the bond interface.
> I used xdpsock sample program specifying the bond interface as the
> input interface. However the packets received on the bond interface
> are not handed over to the socket by the kernel if the socket is bound
> in native mode. The packets are neither being passed to the kernel.
> Note that the socket creation does succeed.
> In skb mode this works and I am able to receive packets in the
> userspace. But in skb mode as expected the performance is not that
> great.
>
> Is AF_XDP sockets on bond not supported in native mode? Or since the
> packet has be to be handed over to the bond driver post reception on
> the phy port, a skb allocation and copy to it is indeed a must?
>
> Another thing I notice is that other XDP programs attached to bond
> interface with targets like DROP, REDIRECT to other interface works
> and perform better than AF_XDP (skb) based. Does this mean that these
> are not allocating skb?
>
> Kindly share your thoughts and advice.
>
> Thanks,
> Prashant