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

Commit 4b1b7d3b30a6 ("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: 4b1b7d3b30a6 ("net/smc: add SMC-D diag support")
Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/uapi/linux/smc_diag.h b/include/uapi/linux/smc_diag.h
index ac9e8c9..6180c6d 100644 (file)
--- a/include/uapi/linux/smc_diag.h
+++ b/include/uapi/linux/smc_diag.h
@@ -18,14 +18,14 @@ struct smc_diag_req {
  * on the internal clcsock, and more SMC-related socket data
  */
 struct smc_diag_msg {
-       __u8    diag_family;
-       __u8    diag_state;
-       __u8    diag_mode;
-       __u8    diag_shutdown;
+       __u8            diag_family;
+       __u8            diag_state;
+       __u8            diag_mode;
+       __u8            diag_shutdown;
        struct inet_diag_sockid id;
 
-       __u32   diag_uid;
-       __u64   diag_inode;
+       __u32           diag_uid;
+       __aligned_u64   diag_inode;
 };
 
 /* Mode of a connection */
@@ -99,11 +99,11 @@ 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 */
+       __u32           linkid;         /* Link identifier */
+       __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_ */