cifs: check for smb1 in open_cached_dir()

Check protocol version in open_cached_dir() and return not supported
for SMB1.  This allows us to call open_cached_dir() from code that
is common to both smb1 and smb2/3 in future patches without having to
do this check in the call-site.
At the same time, add a check if tcon is valid or not for the same reason.

Reviewed-by: Paulo Alcantara (SUSE) <[email protected]>
Reviewed-by: Enzo Matsumiya <[email protected]>
Signed-off-by: Ronnie Sahlberg <[email protected]>
Signed-off-by: Steve French <[email protected]>

0 files changed, 0 insertions, 0 deletions