netdev - [PATCH net 2/2] mctp: Be explicit about struct sockaddr

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Date:   Mon, 18 Oct 2021 11:29:35 +0800
From:   Jeremy Kerr <jk@...econstruct.com.au>
To:     netdev@...r.kernel.org
Cc:     Matt Johnston <matt@...econstruct.com.au>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Eugene Syromiatnikov <esyr@...hat.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH net 2/2] mctp: Be explicit about struct sockaddr_mctp padding

We currently have some implicit padding in struct sockaddr_mctp. This
patch makes this padding explicit, and ensures we have consistent
layout on platforms with <32bit alignmnent.

Fixes: 60fc63981693 ("mctp: Add sockaddr_mctp to uapi")
Signed-off-by: Jeremy Kerr <jk@...econstruct.com.au>
---
 include/uapi/linux/mctp.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/mctp.h b/include/uapi/linux/mctp.h
index f384962d8ff2..6acd4ccafbf7 100644
--- a/include/uapi/linux/mctp.h
+++ b/include/uapi/linux/mctp.h
@@ -20,10 +20,12 @@ struct mctp_addr {
 
 struct sockaddr_mctp {
 	__kernel_sa_family_t	smctp_family;
+	__u16			__smctp_pad0;
 	unsigned int		smctp_network;
 	struct mctp_addr	smctp_addr;
 	__u8			smctp_type;
 	__u8			smctp_tag;
+	__u8			__smctp_pad1;
 };
 
 #define MCTP_NET_ANY		0x0
-- 
2.30.2