RE: [PATCH v4] net/af_xdp: re-enable secondary process support

["Loftus, Ciara" <ciara.loftus@intel.com>]

> Subject: Re: [PATCH v4] net/af_xdp: re-enable secondary process support
> 
> On 2/9/2022 9:48 AM, Ciara Loftus wrote:
> > Secondary process support had been disabled for the AF_XDP PMD
> because
> > there was no logic in place to share the AF_XDP socket file descriptors
> > between the processes. This commit introduces this logic using the IPC
> > APIs.
> >
> > Rx and Tx are disabled in the secondary process due to memory mapping of
> > the AF_XDP rings being assigned by the kernel in the primary process only.
> > However other operations including retrieval of stats are permitted.
> >
> > Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
> >
> 
> Hi Ciara,
> 
> When I tried to test the patch getting following error [1], it doesn't look
> related to this patch but can you help to fix the issue, thanks.
> 
> [1]
> libxdp: Couldn't find a BPF file with name xsk_def_xdp_prog.o
> xsk_configure(): Failed to create xsk socket.
> eth_rx_queue_setup(): Failed to configure xdp socket
> Fail to configure port 2 rx queues
> EAL: Error - exiting with code: 1


Hi Ferruh,

This file should be generated when libxdp is compiled.
Mine is located @ /usr/local/lib/bpf/xsk_def_xdp_prog.o
Can you check if that file is there for you? It could be in /usr/local/lib64/bpf/ on your machine.
What kernel are you running on?

Thanks,
Ciara