From 0da0b816972a88dc82431586cb2c1e85876f9c77 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 21 Feb 2023 13:54:00 +0800
Subject: [PATCH] xfrm: Allow transport-mode states with AF_UNSPEC selector
[ Upstream commit c276a706ea1f51cf9723ed8484feceaf961b8f89 ]
xfrm state selectors are matched against the inner-most flow
which can be of any address family. Therefore middle states
in nested configurations need to carry a wildcard selector in
order to work at all.
However, this is currently forbidden for transport-mode states.
Fix this by removing the unnecessary check.
Fixes: 13996378e658 ("[IPSEC]: Rename mode to outer_mode and add inner_mode")
Reported-by: David George <David.George@sophos.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/xfrm/xfrm_state.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index fdbd56ed4bd5..ba73014805a4 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2611,9 +2611,6 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload)
if (inner_mode == NULL)
goto error;
- if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL))
- goto error;
-
x->inner_mode = *inner_mode;
if (x->props.family == AF_INET)