> On Tue, Jun 23, 2020 at 2:40 PM Lorenzo Bianconi <lorenzo@xxxxxxxxxx> wrote:
> >
> > Similar to what have been done for DEVMAP, introduce tests to verify
[...]
> > +SEC("xdp_cpumap/dummy_cm")
> > +int xdp_dummy_cm(struct xdp_md *ctx)
> > +{
> > + char fmt[] = "devmap redirect: dev %u len %u\n";
> > + void *data_end = (void *)(long)ctx->data_end;
> > + void *data = (void *)(long)ctx->data;
> > + unsigned int len = data_end - data;
> > +
> > + ingress_ifindex = ctx->ingress_ifindex;
>
> Have you checked the generated BPF assembly to verify
> ctx->ingress_ifindex is actually read? ingress_ifindex variable is
> declared static, so I'm guessing Clang just optimized it away. If you
> want to be sure this actually gets executed, make ingress_ifindex
> global var.
ack, thx for the review. I will fix it in v4.
Regards,
Lorenzo
>
> > +
> > + return XDP_PASS;
> > +}
> > +
> > +char _license[] SEC("license") = "GPL";
> > --
> > 2.26.2
> >
Attachment:
signature.asc
Description: PGP signature
