struct netdevsim *ns = cb_priv;
struct bpf_prog *oldprog;
- if (type != TC_SETUP_CLSBPF ||
- !tc_can_offload(ns->netdev) ||
- cls_bpf->common.protocol != htons(ETH_P_ALL) ||
- cls_bpf->common.chain_index)
+ if (type != TC_SETUP_CLSBPF) {
+ NSIM_EA(cls_bpf->common.extack,
+ "only offload of BPF classifiers supported");
return -EOPNOTSUPP;
+ }
+
+ if (!tc_can_offload_extack(ns->netdev, cls_bpf->common.extack))
+ return -EOPNOTSUPP;
+
+ if (cls_bpf->common.protocol != htons(ETH_P_ALL)) {
+ NSIM_EA(cls_bpf->common.extack,
+ "only ETH_P_ALL supported as filter protocol");
+ return -EOPNOTSUPP;
+ }
- if (!ns->bpf_tc_accept)
+ if (cls_bpf->common.chain_index)
return -EOPNOTSUPP;
+
+ if (!ns->bpf_tc_accept) {
+ NSIM_EA(cls_bpf->common.extack,
+ "netdevsim configured to reject BPF TC offload");
+ return -EOPNOTSUPP;
+ }
/* Note: progs without skip_sw will probably not be dev bound */
- if (prog && !prog->aux->offload && !ns->bpf_tc_non_bound_accept)
+ if (prog && !prog->aux->offload && !ns->bpf_tc_non_bound_accept) {
+ NSIM_EA(cls_bpf->common.extack,
+ "netdevsim configured to reject unbound programs");
return -EOPNOTSUPP;
+ }
if (cls_bpf->command != TC_CLSBPF_OFFLOAD)
return -EOPNOTSUPP;
oldprog = NULL;
if (!cls_bpf->prog)
return 0;
- if (ns->bpf_offloaded)
+ if (ns->bpf_offloaded) {
+ NSIM_EA(cls_bpf->common.extack,
+ "driver and netdev offload states mismatch");
return -EBUSY;
+ }
}
return nsim_bpf_offload(ns, cls_bpf->prog, oldprog);