smb3: display security information in /proc/fs/cifs/DebugData more accurately

When the server required encryption (but we didn't connect to it with the
"seal" mount option) we weren't displaying in /proc/fs/cifs/DebugData that
the tcon for that share was encrypted. Similarly we were not displaying
that signing was required when ses->sign was enabled (we only
checked ses->server->sign).  This makes it easier to debug when in
fact the connection is signed (or sealed), whether for performance
or security questions.

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index e92a2fee3c57..faeb1452cc2d 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -115,7 +115,9 @@ static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
                 seq_puts(m, " type: CDROM ");
         else
                 seq_printf(m, " type: %d ", dev_type);
-        if (tcon->seal)
+        if ((tcon->seal) ||
+            (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
+            (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
                 seq_printf(m, " Encrypted");
         if (tcon->nocase)
                 seq_printf(m, " nocase");
@@ -371,6 +373,10 @@ skip_rdma:
                                 atomic_read(&server->in_send),
                                 atomic_read(&server->num_waiters));
 #endif
+                        if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
+                                seq_puts(m, " encrypted");
+                        if (ses->sign)
+                                seq_puts(m, " signed");
 
                         seq_puts(m, "\n\tShares:");
                         j = 0;