Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
drivers/target/target_core_configfs.c | 50 +++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 3a964fb..1e4ea28 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -2131,6 +2131,55 @@ static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type(
SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR);
/*
+ * alua_supported_states
+ */
+static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_supported_states(
+ struct t10_alua_tg_pt_gp *tg_pt_gp,
+ char *page)
+{
+ return sprintf(page, "%02x\n",
+ tg_pt_gp->tg_pt_gp_alua_supported_states);
+}
+
+static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_supported_states(
+ struct t10_alua_tg_pt_gp *tg_pt_gp,
+ const char *page,
+ size_t count)
+{
+ unsigned long tmp;
+ int new_states, valid_states, ret;
+
+ if (!tg_pt_gp->tg_pt_gp_valid_id) {
+ pr_err("Unable to do set supported ALUA states on non"
+ " valid tg_pt_gp ID: %hu\n",
+ tg_pt_gp->tg_pt_gp_valid_id);
+ return -EINVAL;
+ }
+
+ ret = strict_strtoul(page, 0, &tmp);
+ if (ret < 0) {
+ pr_err("Unable to extract new supported ALUA states"
+ " from %s\n", page);
+ return -EINVAL;
+ }
+ new_states = (int)tmp;
+ valid_states = ALUA_T_SUP | ALUA_O_SUP | ALUA_LBD_SUP | \
+ ALUA_U_SUP | ALUA_S_SUP | ALUA_AN_SUP | ALUA_AO_SUP;
+
+
+ if (new_states & ~valid_states) {
+ pr_err("Illegal supported ALUA states: 0x%02x\n",
+ new_states);
+ return -EINVAL;
+ }
+
+ tg_pt_gp->tg_pt_gp_alua_supported_states = new_states;
+ return count;
+}
+
+SE_DEV_ALUA_TG_PT_ATTR(alua_supported_states, S_IRUGO | S_IWUSR);
+
+/*
* alua_write_metadata
*/
static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata(
@@ -2350,6 +2399,7 @@ static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = {
&target_core_alua_tg_pt_gp_alua_access_state.attr,
&target_core_alua_tg_pt_gp_alua_access_status.attr,
&target_core_alua_tg_pt_gp_alua_access_type.attr,
+ &target_core_alua_tg_pt_gp_alua_supported_states.attr,
&target_core_alua_tg_pt_gp_alua_write_metadata.attr,
&target_core_alua_tg_pt_gp_nonop_delay_msecs.attr,
&target_core_alua_tg_pt_gp_trans_delay_msecs.attr,
--
1.7.12.4
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