target_core_alua: Store supported ALUA states

The supported ALUA states might be different for individual
devices, so store it in a separate field.

(nab: Remove unnecessary line continuation)

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

3 files changed, 20 insertions, 6 deletions

diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
index 08e41e33ab91..fdcee326bfbc 100644
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -117,12 +117,7 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd)
                 /*
                  * Set supported ASYMMETRIC ACCESS State bits
                  */
-                buf[off] = 0x80; /* T_SUP */
-                buf[off] |= 0x40; /* O_SUP */
-                buf[off] |= 0x8; /* U_SUP */
-                buf[off] |= 0x4; /* S_SUP */
-                buf[off] |= 0x2; /* AN_SUP */
-                buf[off++] |= 0x1; /* AO_SUP */
+                buf[off++] |= tg_pt_gp->tg_pt_gp_alua_supported_states;
                 /*
                  * TARGET PORT GROUP
                  */
@@ -1367,6 +1362,13 @@ struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(struct se_device *dev,
         tg_pt_gp->tg_pt_gp_trans_delay_msecs = ALUA_DEFAULT_TRANS_DELAY_MSECS;
         tg_pt_gp->tg_pt_gp_implicit_trans_secs = ALUA_DEFAULT_IMPLICIT_TRANS_SECS;
 
+        /*
+         * Enable all supported states
+         */
+        tg_pt_gp->tg_pt_gp_alua_supported_states =
+            ALUA_T_SUP | ALUA_O_SUP |
+            ALUA_U_SUP | ALUA_S_SUP | ALUA_AN_SUP | ALUA_AO_SUP;
+
         if (def_group) {
                 spin_lock(&dev->t10_alua.tg_pt_gps_lock);
                 tg_pt_gp->tg_pt_gp_id =
diff --git a/drivers/target/target_core_alua.h b/drivers/target/target_core_alua.h
index d6db78b3e9e4..88e2e835f14a 100644
--- a/drivers/target/target_core_alua.h
+++ b/drivers/target/target_core_alua.h
@@ -23,6 +23,17 @@
 #define ALUA_ACCESS_STATE_TRANSITION            0xf
 
 /*
+ * from spc4r36j section 6.37 Table 306
+ */
+#define ALUA_T_SUP              0x80
+#define ALUA_O_SUP              0x40
+#define ALUA_LBD_SUP            0x10
+#define ALUA_U_SUP              0x08
+#define ALUA_S_SUP              0x04
+#define ALUA_AN_SUP             0x02
+#define ALUA_AO_SUP             0x01
+
+/*
  * REPORT_TARGET_PORT_GROUP STATUS CODE
  *
  * from spc4r17 section 6.27 Table 246
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 3b0b64aefc27..45412a6afa69 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -283,6 +283,7 @@ struct t10_alua_lu_gp_member {
 struct t10_alua_tg_pt_gp {
         u16     tg_pt_gp_id;
         int     tg_pt_gp_valid_id;
+        int     tg_pt_gp_alua_supported_states;
         int     tg_pt_gp_alua_access_status;
         int     tg_pt_gp_alua_access_type;
         int     tg_pt_gp_nonop_delay_msecs;