netdev - [PATCH net] xfrm: fix a small bug in frm_sa

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Message-Id: <20211208202019.3423010-1-eric.dumazet@gmail.com>
Date:   Wed,  8 Dec 2021 12:20:19 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Steffen Klassert <steffen.klassert@...unet.com>
Subject: [PATCH net] xfrm: fix a small bug in frm_sa_len()

From: Eric Dumazet <edumazet@...gle.com>

copy_user_offload() will actually push a struct struct xfrm_user_offload,
which is different than (struct xfrm_state *)->xso
(struct xfrm_state_offload)

Fixes: d77e38e612a01 ("xfrm: Add an IPsec hardware offloading API")
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: Steffen Klassert <steffen.klassert@...unet.com>
---
 net/xfrm/xfrm_user.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 7c36cc1f3d79c2df16a35077031b74bd2dce730a..0a2d2bae28316f4a43cec96c3e698b42f6b6864b 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -3058,7 +3058,7 @@ static inline unsigned int xfrm_sa_len(struct xfrm_state *x)
 	if (x->props.extra_flags)
 		l += nla_total_size(sizeof(x->props.extra_flags));
 	if (x->xso.dev)
-		 l += nla_total_size(sizeof(x->xso));
+		 l += nla_total_size(sizeof(struct xfrm_user_offload));
 	if (x->props.smark.v | x->props.smark.m) {
 		l += nla_total_size(sizeof(x->props.smark.v));
 		l += nla_total_size(sizeof(x->props.smark.m));
-- 
2.34.1.400.ga245620fadb-goog