+/* Types of response buffer returned from SendReceive2 */
+#define CIFS_NO_BUFFER 0 /* Response buffer not returned */
+#define CIFS_SMALL_BUFFER 1
+#define CIFS_LARGE_BUFFER 2
+#define CIFS_IOVEC 4 /* array of response buffers */
+
+/* Type of Request to SendReceive2 */
+#define CIFS_STD_OP 0 /* normal request timeout */
+#define CIFS_LONG_OP 1 /* long op (up to 45 sec, oplock time) */
+#define CIFS_VLONG_OP 2 /* sloow op - can take up to 180 seconds */
+#define CIFS_BLOCKING_OP 4 /* operation can block */
+#define CIFS_ASYNC_OP 8 /* do not wait for response */
+#define CIFS_TIMEOUT_MASK 0x00F /* only one of 5 above set in req */
+#define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */
+#define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */
+#define CIFS_NO_RESP 0x040 /* no response buffer required */
+
+/* Security Flags: indicate type of session setup needed */
+#define CIFSSEC_MAY_SIGN 0x00001
+#define CIFSSEC_MAY_NTLM 0x00002
+#define CIFSSEC_MAY_NTLMV2 0x00004
+#define CIFSSEC_MAY_KRB5 0x00008
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+#define CIFSSEC_MAY_LANMAN 0x00010
+#define CIFSSEC_MAY_PLNTXT 0x00020
+#else
+#define CIFSSEC_MAY_LANMAN 0
+#define CIFSSEC_MAY_PLNTXT 0
+#endif /* weak passwords */
+#define CIFSSEC_MAY_SEAL 0x00040 /* not supported yet */
+
+#define CIFSSEC_MUST_SIGN 0x01001
+/* note that only one of the following can be set so the
+result of setting MUST flags more than once will be to
+require use of the stronger protocol */
+#define CIFSSEC_MUST_NTLM 0x02002
+#define CIFSSEC_MUST_NTLMV2 0x04004
+#define CIFSSEC_MUST_KRB5 0x08008
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+#define CIFSSEC_MUST_LANMAN 0x10010
+#define CIFSSEC_MUST_PLNTXT 0x20020
+#ifdef CONFIG_CIFS_UPCALL
+#define CIFSSEC_MASK 0x3F03F /* allows weak security but also krb5 */
+#else
+#define CIFSSEC_MASK 0x37037 /* current flags supported if weak */
+#endif /* UPCALL */
+#else /* do not allow weak pw hash */
+#ifdef CONFIG_CIFS_UPCALL
+#define CIFSSEC_MASK 0x0F00F /* flags supported if no weak allowed */
+#else
+#define CIFSSEC_MASK 0x07007 /* flags supported if no weak allowed */
+#endif /* UPCALL */
+#endif /* WEAK_PW_HASH */
+#define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */
+
+#define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2)
+#define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2)
+#define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5)