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From: Kees Cook <kees@kernel.org>
To: Jakub Kicinski <kuba@kernel.org>
Cc: Kees Cook <kees@kernel.org>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Andrew Lunn <andrew@lunn.ch>,
	"Kory Maincent (Dent Project)" <kory.maincent@bootlin.com>,
	Michael Chan <michael.chan@broadcom.com>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	Eric Dumazet <edumazet@google.com>,
	Paolo Abeni <pabeni@redhat.com>,
	Potnuri Bharat Teja <bharat@chelsio.com>,
	Christian Benvenuti <benve@cisco.com>,
	Satish Kharat <satishkh@cisco.com>,
	Manish Chopra <manishc@marvell.com>,
	Simon Horman <horms@kernel.org>,
	Edward Cree <ecree.xilinx@gmail.com>,
	Przemek Kitszel <przemyslaw.kitszel@intel.com>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Ahmed Zaki <ahmed.zaki@intel.com>,
	Rahul Rameshbabu <rrameshbabu@nvidia.com>,
	Ido Schimmel <idosch@nvidia.com>,
	Maxime Chevallier <maxime.chevallier@bootlin.com>,
	Takeru Hayasaka <hayatake396@gmail.com>,
	Jonathan Corbet <corbet@lwn.net>,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	linux-hardening@vger.kernel.org
Subject: [PATCH 2/3] Revert "UAPI: ethtool: Use __struct_group() in struct ethtool_link_settings"
Date: Fri, 15 Nov 2024 12:43:04 -0800	[thread overview]
Message-ID: <20241115204308.3821419-2-kees@kernel.org> (raw)
In-Reply-To: <20241115204115.work.686-kees@kernel.org>

This reverts commit 43d3487035e9a86fad952de4240a518614240d43. We cannot
use tagged struct groups in UAPI because C++ will throw syntax errors
even under "extern C".

Signed-off-by: Kees Cook <kees@kernel.org>
---
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
---
 include/uapi/linux/ethtool.h | 33 +++++++++++++++------------------
 1 file changed, 15 insertions(+), 18 deletions(-)

diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index fc1f54b065f9..c405ed63acfa 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -2511,24 +2511,21 @@ enum ethtool_reset_flags {
  *	autonegotiation; 0 if unknown or not applicable.  Read-only.
  */
 struct ethtool_link_settings {
-	/* New members MUST be added within the __struct_group() macro below. */
-	__struct_group(ethtool_link_settings_hdr, hdr, /* no attrs */,
-		__u32	cmd;
-		__u32	speed;
-		__u8	duplex;
-		__u8	port;
-		__u8	phy_address;
-		__u8	autoneg;
-		__u8	mdio_support;
-		__u8	eth_tp_mdix;
-		__u8	eth_tp_mdix_ctrl;
-		__s8	link_mode_masks_nwords;
-		__u8	transceiver;
-		__u8	master_slave_cfg;
-		__u8	master_slave_state;
-		__u8	rate_matching;
-		__u32	reserved[7];
-	);
+	__u32	cmd;
+	__u32	speed;
+	__u8	duplex;
+	__u8	port;
+	__u8	phy_address;
+	__u8	autoneg;
+	__u8	mdio_support;
+	__u8	eth_tp_mdix;
+	__u8	eth_tp_mdix_ctrl;
+	__s8	link_mode_masks_nwords;
+	__u8	transceiver;
+	__u8	master_slave_cfg;
+	__u8	master_slave_state;
+	__u8	rate_matching;
+	__u32	reserved[7];
 	__u32	link_mode_masks[];
 	/* layout of link_mode_masks fields:
 	 * __u32 map_supported[link_mode_masks_nwords];
-- 
2.34.1


  parent reply	other threads:[~2024-11-15 20:43 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-15 20:43 [PATCH 0/3] UAPI: ethtool: Avoid flex-array in struct ethtool_link_settings Kees Cook
2024-11-15 20:43 ` [PATCH 1/3] Revert "net: ethtool: Avoid thousands of -Wflex-array-member-not-at-end warnings" Kees Cook
2024-11-15 20:43 ` Kees Cook [this message]
2024-11-15 20:43 ` [PATCH 3/3] UAPI: ethtool: Avoid flex-array in struct ethtool_link_settings Kees Cook
2024-11-15 21:50   ` Jakub Kicinski
2024-11-19  4:00 ` [PATCH 0/3] " patchwork-bot+netdevbpf

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