netdev - [PATCH net-next 5/6] ethtool: strset: report missing ETHTOOL_A_STRINGSET_ID via ext

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Message-Id: <20220824045024.1107161-6-kuba@kernel.org>
Date:   Tue, 23 Aug 2022 21:50:23 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, edumazet@...gle.com, pabeni@...hat.com,
        mkubecek@...e.cz, johannes@...solutions.net,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 5/6] ethtool: strset: report missing ETHTOOL_A_STRINGSET_ID via ext_ack

Strset needs ETHTOOL_A_STRINGSET_ID, use it as an example of
reporting attrs missing in nests.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 net/ethtool/strset.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ethtool/strset.c b/net/ethtool/strset.c
index 2d51b7ab4dc5..3f7de54d85fb 100644
--- a/net/ethtool/strset.c
+++ b/net/ethtool/strset.c
@@ -167,7 +167,7 @@ static int strset_get_id(const struct nlattr *nest, u32 *val,
 			       get_stringset_policy, extack);
 	if (ret < 0)
 		return ret;
-	if (!tb[ETHTOOL_A_STRINGSET_ID])
+	if (NL_REQ_ATTR_CHECK(extack, nest, tb, ETHTOOL_A_STRINGSET_ID))
 		return -EINVAL;
 
 	*val = nla_get_u32(tb[ETHTOOL_A_STRINGSET_ID]);
-- 
2.37.2