netdev - [PATCH net] flow_offload: return EOPNOTSUPP for the unsupported mpls action type

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Message-Id: <20211213144604.23888-1-simon.horman@corigine.com>
Date:   Mon, 13 Dec 2021 15:46:04 +0100
From:   Simon Horman <simon.horman@...igine.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org,
        oss-drivers@...igine.com, Roi Dayan <roid@...dia.com>,
        Baowen Zheng <baowen.zheng@...igine.com>,
        Simon Horman <simon.horman@...igine.com>
Subject: [PATCH net] flow_offload: return EOPNOTSUPP for the unsupported mpls action type

From: Baowen Zheng <baowen.zheng@...igine.com>

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@...igine.com>
Signed-off-by: Simon Horman <simon.horman@...igine.com>
Acked-by: Jamal Hadi Salim <jhs@...atatu.com>
---
 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 2ef8f5a6205a..e54f0a42270c 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