Subject: Re: [PATCH bpf-next v4 5/7] samples/bpf: Add a "force" flag to XDP samples

From: Jesper Dangaard Brouer <[email-masked]>
Date: Tue, 29 Jan 2019 09:00:00 +0100

On Mon, 28 Jan 2019 20:16:11 +0100
Maciej Fijalkowski <[email-masked]> wrote:

> From: Maciej Fijalkowski <[email-masked]>
> 
> Make xdp samples consistent with iproute2 behavior and set the
> XDP_FLAGS_UPDATE_IF_NOEXIST by default when setting the xdp program on
> interface. Provide an option for user to force the program loading,
> which as a result will not include the mentioned flag in
> bpf_set_link_xdp_fd call.

I like the idea, but what is the error message users get after this
change?

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer