target_core_alua: Make supported states configurable
Signed-off-by: Hannes Reinecke <hare@suse.de>
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c0dc941e2b
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6be526c45d
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@ -2130,6 +2130,55 @@ static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type(
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SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR);
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/*
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* alua_supported_states
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*/
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static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_supported_states(
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struct t10_alua_tg_pt_gp *tg_pt_gp,
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char *page)
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{
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return sprintf(page, "%02x\n",
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tg_pt_gp->tg_pt_gp_alua_supported_states);
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}
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static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_supported_states(
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struct t10_alua_tg_pt_gp *tg_pt_gp,
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const char *page,
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size_t count)
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{
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unsigned long tmp;
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int new_states, valid_states, ret;
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if (!tg_pt_gp->tg_pt_gp_valid_id) {
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pr_err("Unable to do set supported ALUA states on non"
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" valid tg_pt_gp ID: %hu\n",
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tg_pt_gp->tg_pt_gp_valid_id);
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return -EINVAL;
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}
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ret = strict_strtoul(page, 0, &tmp);
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if (ret < 0) {
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pr_err("Unable to extract new supported ALUA states"
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" from %s\n", page);
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return -EINVAL;
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}
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new_states = (int)tmp;
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valid_states = ALUA_T_SUP | ALUA_O_SUP | ALUA_LBD_SUP | \
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ALUA_U_SUP | ALUA_S_SUP | ALUA_AN_SUP | ALUA_AO_SUP;
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if (new_states & ~valid_states) {
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pr_err("Illegal supported ALUA states: 0x%02x\n",
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new_states);
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return -EINVAL;
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}
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tg_pt_gp->tg_pt_gp_alua_supported_states = new_states;
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return count;
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}
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SE_DEV_ALUA_TG_PT_ATTR(alua_supported_states, S_IRUGO | S_IWUSR);
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/*
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* alua_write_metadata
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*/
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@ -2350,6 +2399,7 @@ static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = {
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&target_core_alua_tg_pt_gp_alua_access_state.attr,
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&target_core_alua_tg_pt_gp_alua_access_status.attr,
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&target_core_alua_tg_pt_gp_alua_access_type.attr,
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&target_core_alua_tg_pt_gp_alua_supported_states.attr,
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&target_core_alua_tg_pt_gp_alua_write_metadata.attr,
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&target_core_alua_tg_pt_gp_nonop_delay_msecs.attr,
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&target_core_alua_tg_pt_gp_trans_delay_msecs.attr,
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