netdev - [PATCH iproute2 2/2] tc: m_action: fix parsing of TCA_EXT_WARN

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Message-Id: <20230314070841.1533755-1-liuhangbin@gmail.com>
Date:   Tue, 14 Mar 2023 15:08:41 +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: [PATCH iproute2 2/2] tc: m_action: fix parsing of TCA_EXT_WARN_MSG by using different enum

We can't use TCA_EXT_WARN_MSG directly in tc action as it's using different
enum with filter. Let's use a new TCA_ACT_EXT_WARN_MSG for tc action
specifically.

Fixes: 6035995665b7 ("tc: add new attr TCA_EXT_WARN_MSG")
Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
 include/uapi/linux/rtnetlink.h | 1 +
 tc/m_action.c                  | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
index 217b25b9..f598c78a 100644
--- a/include/uapi/linux/rtnetlink.h
+++ b/include/uapi/linux/rtnetlink.h
@@ -787,6 +787,7 @@ enum {
 	TCA_ROOT_FLAGS,
 	TCA_ROOT_COUNT,
 	TCA_ROOT_TIME_DELTA, /* in msecs */
+	TCA_ACT_EXT_WARN_MSG,
 	__TCA_ROOT_MAX,
 #define	TCA_ROOT_MAX (__TCA_ROOT_MAX - 1)
 };
diff --git a/tc/m_action.c b/tc/m_action.c
index 0400132c..f99d1170 100644
--- a/tc/m_action.c
+++ b/tc/m_action.c
@@ -586,7 +586,12 @@ int print_action(struct nlmsghdr *n, void *arg)
 
 	open_json_object(NULL);
 	tc_dump_action(fp, tb[TCA_ACT_TAB], tot_acts ? *tot_acts:0, false);
-	print_ext_msg(tb);
+
+	if (tb[TCA_ACT_EXT_WARN_MSG]) {
+		print_string(PRINT_ANY, "warn", "%s", rta_getattr_str(tb[TCA_ACT_EXT_WARN_MSG]));
+		print_nl();
+	}
+
 	close_json_object();
 
 	return 0;
-- 
2.38.1