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Message-ID: <20230320132523.3203254-2-shayagr@amazon.com>
Date:   Mon, 20 Mar 2023 15:25:17 +0200
From:   Shay Agroskin <shayagr@...zon.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, <netdev@...r.kernel.org>
CC:     Shay Agroskin <shayagr@...zon.com>,
        "Woodhouse, David" <dwmw@...zon.com>,
        "Machulsky, Zorik" <zorik@...zon.com>,
        "Matushevsky, Alexander" <matua@...zon.com>,
        Saeed Bshara <saeedb@...zon.com>,
        "Wilson, Matt" <msw@...zon.com>,
        "Liguori, Anthony" <aliguori@...zon.com>,
        "Bshara, Nafea" <nafea@...zon.com>,
        "Belgazal, Netanel" <netanel@...zon.com>,
        "Saidi, Ali" <alisaidi@...zon.com>,
        "Herrenschmidt, Benjamin" <benh@...zon.com>,
        "Kiyanovski, Arthur" <akiyano@...zon.com>,
        "Dagan, Noam" <ndagan@...zon.com>,
        "Arinzon, David" <darinzon@...zon.com>,
        "Itzko, Shahar" <itzko@...zon.com>,
        "Abboud, Osama" <osamaabb@...zon.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Andrew Lunn <andrew@...n.ch>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        "Jie Wang" <wangjie125@...wei.com>,
        Johannes Berg <johannes@...solutions.net>,
        Edward Cree <ecree.xilinx@...il.com>,
        Florian Westphal <fw@...len.de>
Subject: [PATCH v6 net-next 1/7] netlink: Add a macro to set policy message with format string

Similar to NL_SET_ERR_MSG_FMT, add a macro which sets netlink policy
error message with a format string.

Signed-off-by: Shay Agroskin <shayagr@...zon.com>
---
 include/linux/netlink.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 3e8743252167..2ca76ec1fc33 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -161,9 +161,22 @@ struct netlink_ext_ack {
 	}							\
 } while (0)
 
+#define NL_SET_ERR_MSG_ATTR_POL_FMT(extack, attr, pol, fmt, args...) do {	\
+	struct netlink_ext_ack *__extack = (extack);				\
+										\
+	if (__extack) {								\
+		NL_SET_ERR_MSG_FMT(extack, fmt, ##args);			\
+		__extack->bad_attr = (attr);					\
+		__extack->policy = (pol);					\
+	}									\
+} while (0)
+
 #define NL_SET_ERR_MSG_ATTR(extack, attr, msg)		\
 	NL_SET_ERR_MSG_ATTR_POL(extack, attr, NULL, msg)
 
+#define NL_SET_ERR_MSG_ATTR_FMT(extack, attr, msg, args...) \
+	NL_SET_ERR_MSG_ATTR_POL_FMT(extack, attr, NULL, msg, ##args)
+
 #define NL_SET_ERR_ATTR_MISS(extack, nest, type)  do {	\
 	struct netlink_ext_ack *__extack = (extack);	\
 							\
-- 
2.25.1

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