• Steve French's avatar
    [CIFS] cifs: clarify the meaning of tcpStatus == CifsGood · fd88ce93
    Steve French authored
    When the TCP_Server_Info is first allocated and connected, tcpStatus ==
    CifsGood means that the NEGOTIATE_PROTOCOL request has completed and the
    socket is ready for other calls. cifs_reconnect however sets tcpStatus
    to CifsGood as soon as the socket is reconnected and the optional
    RFC1001 session setup is done. We have no clear way to tell the
    difference between these two states, and we need to know this in order
    to know whether we can send an echo or not.
    
    Resolve this by adding a new statusEnum value -- CifsNeedNegotiate. When
    the socket has been connected but has not yet had a NEGOTIATE_PROTOCOL
    request done, set it to this value. Once the NEGOTIATE is done,
    cifs_negotiate_protocol will set tcpStatus to CifsGood.
    
    This also fixes and cleans the logic in cifs_reconnect and
    cifs_reconnect_tcon. The old code checked for specific states when what
    it really wants to know is whether the state has actually changed from
    CifsNeedReconnect.
    Reported-and-Tested-by: default avatarJG <jg@cms.ac>
    Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
    Signed-off-by: default avatarSteve French <sfrench@us.ibm.com>
    fd88ce93
cifsglob.h 26.6 KB