netdev - [PATCHv2 net 1/2] Revert "net/sched: act_api: move TCA_EXT_WARN

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Date:   Thu, 16 Mar 2023 11:37:52 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     netdev@...r.kernel.org
Cc:     Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        David Ahern <dsahern@...nel.org>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Davide Caratti <dcaratti@...hat.com>,
        Pedro Tammela <pctammela@...atatu.com>,
        Marcelo Leitner <mleitner@...hat.com>,
        Phil Sutter <psutter@...hat.com>,
        Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCHv2 net 1/2] Revert "net/sched: act_api: move TCA_EXT_WARN_MSG to the correct hierarchy"

This reverts commit 923b2e30dc9cd05931da0f64e2e23d040865c035.

This is not a correct fix as TCA_EXT_WARN_MSG is not a hierarchy to
TCA_ACT_TAB. I didn't notice the TC actions use different enum when adding
TCA_EXT_WARN_MSG. To fix the difference I will add a new WARN enum in
TCA_ROOT_MAX as Jamal suggested.

Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
 net/sched/act_api.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 34c508675041..fce522886099 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -1596,12 +1596,12 @@ static int tca_get_fill(struct sk_buff *skb, struct tc_action *actions[],
 	if (tcf_action_dump(skb, actions, bind, ref, false) < 0)
 		goto out_nlmsg_trim;
 
+	nla_nest_end(skb, nest);
+
 	if (extack && extack->_msg &&
 	    nla_put_string(skb, TCA_EXT_WARN_MSG, extack->_msg))
 		goto out_nlmsg_trim;
 
-	nla_nest_end(skb, nest);
-
 	nlh->nlmsg_len = skb_tail_pointer(skb) - b;
 
 	return skb->len;
-- 
2.38.1