flow_offload: return EOPNOTSUPP for the unsupported mpls action type

We need to return EOPNOTSUPP for the unsupported mpls action type when
setup the flow action.

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.

Fixes: 9838b20a7fb2 ("net: sched: take rtnl lock in tc_setup_flow_action()")
Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 2ef8f5a6205a9d92c2195444cb0469702be93da5..e54f0a42270c1ba9f47bdb3968c11b5c777c8bb1 100644 (file)
--- 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)) {