linux-kernel - [PATCH net-next 2/3] wireguard: peer: Replace sockaddr with sockaddr

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Message-Id: <20250722171836.1078436-2-kees@kernel.org>
Date: Tue, 22 Jul 2025 10:18:32 -0700
From: Kees Cook <kees@...nel.org>
To: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Cc: Kees Cook <kees@...nel.org>,
	"Jason A. Donenfeld" <Jason@...c4.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	wireguard@...ts.zx2c4.com,
	netdev@...r.kernel.org,
	Xin Long <lucien.xin@...il.com>,
	Simon Horman <horms@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-sctp@...r.kernel.org,
	linux-hardening@...r.kernel.org
Subject: [PATCH net-next 2/3] wireguard: peer: Replace sockaddr with sockaddr_inet

As part of the removal of the variably-sized sockaddr for kernel
internals, replace struct sockaddr with sockaddr_inet in the endpoint
union.

No binary changes; the union size remains unchanged due to sockaddr_inet
matching the size of sockaddr_in6.

Signed-off-by: Kees Cook <kees@...nel.org>
---
Cc: "Jason A. Donenfeld" <Jason@...c4.com>
Cc: Andrew Lunn <andrew+netdev@...n.ch>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: <wireguard@...ts.zx2c4.com>
Cc: <netdev@...r.kernel.org>
---
 drivers/net/wireguard/peer.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireguard/peer.h b/drivers/net/wireguard/peer.h
index 76e4d3128ad4..718fb42bdac7 100644
--- a/drivers/net/wireguard/peer.h
+++ b/drivers/net/wireguard/peer.h
@@ -20,7 +20,7 @@ struct wg_device;
 
 struct endpoint {
 	union {
-		struct sockaddr addr;
+		struct sockaddr_inet addr;     /* Large enough for both address families */
 		struct sockaddr_in addr4;
 		struct sockaddr_in6 addr6;
 	};
-- 
2.34.1