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In the original implement, we will return 0 for the unsupported mpls action type, actually we do not setup it and the following actions to the flow action entry. Signed-off-by: Baowen Zheng Signed-off-by: Simon Horman --- net/sched/cls_api.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index d9d6ff0bf361..7a680cae0bae 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -3687,6 +3687,7 @@ int tc_setup_flow_action(struct flow_action *flow_action, entry->mpls_mangle.ttl = tcf_mpls_ttl(act); break; default: + err = -EOPNOTSUPP; goto err_out_locked; } } else if (is_tcf_skbedit_ptype(act)) { -- 2.20.1