netdev - [PATCH net-next 2/5] net: hsr: Add __packed to struct hsr_sup

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Message-Id: <20230915181006.2086061-3-bigeasy@linutronix.de>
Date: Fri, 15 Sep 2023 20:10:03 +0200
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
	Andreas Oetken <ennoerlangen@...il.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Lukasz Majewski <lukma@...x.de>,
	Paolo Abeni <pabeni@...hat.com>,
	Shuah Khan <shuah@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH net-next 2/5] net: hsr: Add __packed to struct hsr_sup_tlv.

Struct hsr_sup_tlv describes HW layout and therefore it needs a __packed
attribute to ensure the compiler does not add any padding.
Due to the size and __packed attribute of the structs that use
hsr_sup_tlv it has no functional impact.

Add __packed to struct hsr_sup_tlv.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 net/hsr/hsr_main.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/hsr/hsr_main.h b/net/hsr/hsr_main.h
index 6851e33df7d14..18e01791ad799 100644
--- a/net/hsr/hsr_main.h
+++ b/net/hsr/hsr_main.h
@@ -83,7 +83,7 @@ struct hsr_vlan_ethhdr {
 struct hsr_sup_tlv {
 	u8		HSR_TLV_type;
 	u8		HSR_TLV_length;
-};
+} __packed;
 
 /* HSR/PRP Supervision Frame data types.
  * Field names as defined in the IEC:2010 standard for HSR.
-- 
2.40.1