xfrm_user: fix return value from xfrm_user_rcv_msg

[ Upstream commit 83e2d0587ae859aae75fd9d246c409b10a6bd137 ]

It doesn't support to run 32bit 'ip' to set xfrm objdect on 64bit host.
But the return value is unknown for user program:

ip xfrm policy list
RTNETLINK answers: Unknown error 524

Replace ENOTSUPP with EOPNOTSUPP:

ip xfrm policy list
RTNETLINK answers: Operation not supported

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 65c18fc9bbd04395ecef4620da2c91ceb8f67e19..0f6285f9674e16de180a0f055299f00c6059696b 100644 (file)
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2455,7 +2455,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 
 #ifdef CONFIG_COMPAT
        if (is_compat_task())
-               return -ENOTSUPP;
+               return -EOPNOTSUPP;
 #endif
 
        type = nlh->nlmsg_type;