net/smc: use __aligned_u64 for 64-bit smc_diag fields

Commit 4b1b7d3b ("net/smc: add SMC-D diag support") introduced
new UAPI-exposed structure, struct smcd_diag_dmbinfo.  However,
it's not usable by compat binaries, as it has different layout there.
Probably, the most straightforward fix that will avoid similar issues
in the future is to use __aligned_u64 for 64-bit fields.

Fixes: 4b1b7d3b ("net/smc: add SMC-D diag support")
Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/uapi/linux/smc_diag.h

@@ -25,7 +25,7 @@ struct smc_diag_msg {
 	struct inet_diag_sockid id;
 
 	__u32		diag_uid;
-	__u64	diag_inode;
+	__aligned_u64	diag_inode;
 };
 
 /* Mode of a connection */
@@ -100,10 +100,10 @@ struct smc_diag_fallback {
 
 struct smcd_diag_dmbinfo {		/* SMC-D Socket internals */
 	__u32		linkid;		/* Link identifier */
-	__u64 peer_gid;			/* Peer GID */
-	__u64 my_gid;			/* My GID */
-	__u64 token;			/* Token of DMB */
-	__u64 peer_token;		/* Token of remote DMBE */
+	__aligned_u64	peer_gid;	/* Peer GID */
+	__aligned_u64	my_gid;		/* My GID */
+	__aligned_u64	token;		/* Token of DMB */
+	__aligned_u64	peer_token;	/* Token of remote DMBE */
 };
 
 #endif /* _UAPI_SMC_DIAG_H_ */