Add ALUA command filtering

From Bart Van Assche <bvanassche@acm.org>



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@4848 d57e44dd-8a1f-0410-8b47-8ef2f437770f

scst/include/scst.h

@@ -2595,6 +2595,9 @@ struct scst_tgt_dev {
 	unsigned short tgt_dev_valid_sense_len;
 	uint8_t tgt_dev_sense[SCST_SENSE_BUFFERSIZE];
 
+	/* ALUA command filter */
+	bool (*alua_filter)(struct scst_cmd *cmd);
+
 #ifndef CONFIG_SCST_PROC
 	/* sysfs release completion */
 	struct completion *tgt_dev_kobj_release_cmpl;

scst/include/scst_const.h

@@ -278,6 +278,8 @@ static inline int scst_sense_response_code(const uint8_t *sense)
 #define scst_sense_no_sense			NO_SENSE,        0x00, 0
 
 /* NOT_READY is 2 */
+#define scst_sense_tp_transitioning		NOT_READY,	 0x04, 0x0A
+#define scst_sense_tp_unav			NOT_READY,	 0x04, 0x0C
 #define scst_sense_not_ready			NOT_READY,       0x04, 0x10
 #define scst_sense_no_medium			NOT_READY,       0x3a, 0
 
@@ -354,6 +356,10 @@ static inline int scst_sense_response_code(const uint8_t *sense)
  * The definitions below are only used when this header file is included during
  * compilation of SCST's user space components.
  */
+#ifndef GET_EVENT_STATUS_NOTIFICATION
+/* Upstream commit 93aae17a (v2.6.38) */
+#define GET_EVENT_STATUS_NOTIFICATION 0x4a
+#endif
 #ifndef READ_16
 #define READ_16               0x88
 #endif
@@ -496,6 +502,7 @@ enum {
  * See also the documentation of the REPORT TARGET PORT GROUPS command in SPC-4.
  */
 enum scst_tg_state {
+	SCST_TG_STATE_UNDEFINED         =  -1,
 	SCST_TG_STATE_OPTIMIZED		= 0x0,
 	SCST_TG_STATE_NONOPTIMIZED	= 0x1,
 	SCST_TG_STATE_STANDBY		= 0x2,