Re: [PATCH net-next 1/2] netdevsim: tc: allow to test nf_tables offload control plane code

[Florian Westphal <fw@strlen.de>]

Jakub Kicinski <kuba@kernel.org> wrote:
> On Wed, 10 Jun 2026 19:58:43 +0200 Florian Westphal wrote:
> > @@ -73,7 +86,10 @@ nsim_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data)
> >  						  &nsim_block_cb_list,
> >  						  nsim_setup_tc_block_cb,
> >  						  ns, ns, true);
> > +	case TC_SETUP_FT:
> > +		return 0;
> >  	default:
> >  		return -EOPNOTSUPP;
> >  	}
> >  }
> > +ALLOW_ERROR_INJECTION(nsim_setup_tc, ERRNO);
> 
> As you probably seen other netdevsim offloads use explicit debugfs 
> files to "fail operation X". Slightly easier to deal with, and
> netdevsim is a test harness anyway. But entirely up to you.

I'd rather not reimplement the '30% failure rate' and the 'make-it-fail'
logic (allows to have restrict the error injection to selected
processed), so I would prefer to give fuzzers more rope.

I'll fix up the sashiko hints in v2.