On Tue, 20 Sep 2016 08:40:37 -0700
Alexei Starovoitov <alexei.starovoi...@gmail.com> wrote:
> On Tue, Sep 20, 2016 at 03:53:10PM +0300, Tariq Toukan wrote:
> > >>>+ case XDP_ABORTED:
> > >>It is not clearly defined, but I believe XDP_ABORTED should also result
> > >>in a warning (calling bpf_warn_invalid_xdp_action(act)).
> > I'll add this.
> Certainly NOT.
> XDP_ABORTED is an exception case when program does divide by zero.
> It should NOT do bpf_warn. It must drop the packet.
> We discussed it several months ago.
> See mlx4/en_rx.c for canonical implementation.
It was certainly not documented, and my memory fails me.
Please explain why a eBPF program error (div by zero) must be a silent drop?
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
Author of http://www.iptv-analyzer.org