3007 lines
80 KiB
C
3007 lines
80 KiB
C
/*******************************************************************************
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* Filename: target_core_configfs.c
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*
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* This file contains ConfigFS logic for the Generic Target Engine project.
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*
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* (c) Copyright 2008-2012 RisingTide Systems LLC.
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*
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* Nicholas A. Bellinger <nab@kernel.org>
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*
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* based on configfs Copyright (C) 2005 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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****************************************************************************/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <generated/utsrelease.h>
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#include <linux/utsname.h>
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#include <linux/init.h>
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#include <linux/fs.h>
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#include <linux/namei.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/delay.h>
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#include <linux/unistd.h>
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#include <linux/string.h>
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#include <linux/parser.h>
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#include <linux/syscalls.h>
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#include <linux/configfs.h>
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#include <linux/spinlock.h>
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#include <target/target_core_base.h>
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#include <target/target_core_backend.h>
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#include <target/target_core_fabric.h>
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#include <target/target_core_fabric_configfs.h>
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#include <target/target_core_configfs.h>
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#include <target/configfs_macros.h>
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#include "target_core_internal.h"
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#include "target_core_alua.h"
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#include "target_core_pr.h"
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#include "target_core_rd.h"
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extern struct t10_alua_lu_gp *default_lu_gp;
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static LIST_HEAD(g_tf_list);
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static DEFINE_MUTEX(g_tf_lock);
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struct target_core_configfs_attribute {
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struct configfs_attribute attr;
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ssize_t (*show)(void *, char *);
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ssize_t (*store)(void *, const char *, size_t);
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};
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static struct config_group target_core_hbagroup;
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static struct config_group alua_group;
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static struct config_group alua_lu_gps_group;
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static inline struct se_hba *
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item_to_hba(struct config_item *item)
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{
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return container_of(to_config_group(item), struct se_hba, hba_group);
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}
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/*
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* Attributes for /sys/kernel/config/target/
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*/
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static ssize_t target_core_attr_show(struct config_item *item,
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struct configfs_attribute *attr,
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char *page)
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{
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return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s"
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" on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION,
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utsname()->sysname, utsname()->machine);
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}
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static struct configfs_item_operations target_core_fabric_item_ops = {
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.show_attribute = target_core_attr_show,
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};
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static struct configfs_attribute target_core_item_attr_version = {
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.ca_owner = THIS_MODULE,
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.ca_name = "version",
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.ca_mode = S_IRUGO,
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};
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static struct target_fabric_configfs *target_core_get_fabric(
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const char *name)
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{
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struct target_fabric_configfs *tf;
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if (!name)
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return NULL;
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mutex_lock(&g_tf_lock);
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list_for_each_entry(tf, &g_tf_list, tf_list) {
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if (!strcmp(tf->tf_name, name)) {
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atomic_inc(&tf->tf_access_cnt);
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mutex_unlock(&g_tf_lock);
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return tf;
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}
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}
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mutex_unlock(&g_tf_lock);
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return NULL;
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}
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/*
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* Called from struct target_core_group_ops->make_group()
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*/
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static struct config_group *target_core_register_fabric(
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struct config_group *group,
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const char *name)
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{
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struct target_fabric_configfs *tf;
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int ret;
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pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:"
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" %s\n", group, name);
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/*
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* Below are some hardcoded request_module() calls to automatically
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* local fabric modules when the following is called:
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*
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* mkdir -p /sys/kernel/config/target/$MODULE_NAME
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*
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* Note that this does not limit which TCM fabric module can be
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* registered, but simply provids auto loading logic for modules with
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* mkdir(2) system calls with known TCM fabric modules.
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*/
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if (!strncmp(name, "iscsi", 5)) {
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/*
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* Automatically load the LIO Target fabric module when the
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* following is called:
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*
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* mkdir -p $CONFIGFS/target/iscsi
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*/
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ret = request_module("iscsi_target_mod");
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if (ret < 0) {
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pr_err("request_module() failed for"
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" iscsi_target_mod.ko: %d\n", ret);
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return ERR_PTR(-EINVAL);
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}
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} else if (!strncmp(name, "loopback", 8)) {
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/*
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* Automatically load the tcm_loop fabric module when the
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* following is called:
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*
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* mkdir -p $CONFIGFS/target/loopback
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*/
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ret = request_module("tcm_loop");
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if (ret < 0) {
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pr_err("request_module() failed for"
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" tcm_loop.ko: %d\n", ret);
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return ERR_PTR(-EINVAL);
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}
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}
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tf = target_core_get_fabric(name);
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if (!tf) {
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pr_err("target_core_get_fabric() failed for %s\n",
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name);
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return ERR_PTR(-EINVAL);
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}
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pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:"
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" %s\n", tf->tf_name);
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/*
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* On a successful target_core_get_fabric() look, the returned
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* struct target_fabric_configfs *tf will contain a usage reference.
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*/
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pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n",
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&TF_CIT_TMPL(tf)->tfc_wwn_cit);
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tf->tf_group.default_groups = tf->tf_default_groups;
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tf->tf_group.default_groups[0] = &tf->tf_disc_group;
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tf->tf_group.default_groups[1] = NULL;
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config_group_init_type_name(&tf->tf_group, name,
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&TF_CIT_TMPL(tf)->tfc_wwn_cit);
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config_group_init_type_name(&tf->tf_disc_group, "discovery_auth",
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&TF_CIT_TMPL(tf)->tfc_discovery_cit);
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pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:"
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" %s\n", tf->tf_group.cg_item.ci_name);
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/*
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* Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item()
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*/
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tf->tf_ops.tf_subsys = tf->tf_subsys;
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tf->tf_fabric = &tf->tf_group.cg_item;
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pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric"
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" for %s\n", name);
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return &tf->tf_group;
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}
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/*
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* Called from struct target_core_group_ops->drop_item()
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*/
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static void target_core_deregister_fabric(
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struct config_group *group,
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struct config_item *item)
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{
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struct target_fabric_configfs *tf = container_of(
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to_config_group(item), struct target_fabric_configfs, tf_group);
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struct config_group *tf_group;
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struct config_item *df_item;
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int i;
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pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in"
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" tf list\n", config_item_name(item));
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pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:"
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" %s\n", tf->tf_name);
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atomic_dec(&tf->tf_access_cnt);
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pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing"
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" tf->tf_fabric for %s\n", tf->tf_name);
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tf->tf_fabric = NULL;
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pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci"
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" %s\n", config_item_name(item));
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tf_group = &tf->tf_group;
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for (i = 0; tf_group->default_groups[i]; i++) {
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df_item = &tf_group->default_groups[i]->cg_item;
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tf_group->default_groups[i] = NULL;
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config_item_put(df_item);
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}
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config_item_put(item);
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}
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static struct configfs_group_operations target_core_fabric_group_ops = {
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.make_group = &target_core_register_fabric,
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.drop_item = &target_core_deregister_fabric,
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};
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/*
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* All item attributes appearing in /sys/kernel/target/ appear here.
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*/
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static struct configfs_attribute *target_core_fabric_item_attrs[] = {
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&target_core_item_attr_version,
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NULL,
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};
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/*
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* Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/
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*/
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static struct config_item_type target_core_fabrics_item = {
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.ct_item_ops = &target_core_fabric_item_ops,
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.ct_group_ops = &target_core_fabric_group_ops,
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.ct_attrs = target_core_fabric_item_attrs,
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.ct_owner = THIS_MODULE,
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};
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static struct configfs_subsystem target_core_fabrics = {
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.su_group = {
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.cg_item = {
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.ci_namebuf = "target",
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.ci_type = &target_core_fabrics_item,
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},
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},
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};
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static struct configfs_subsystem *target_core_subsystem[] = {
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&target_core_fabrics,
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NULL,
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};
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/*##############################################################################
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// Start functions called by external Target Fabrics Modules
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//############################################################################*/
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/*
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* First function called by fabric modules to:
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*
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* 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer.
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* 2) Add struct target_fabric_configfs to g_tf_list
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* 3) Return struct target_fabric_configfs to fabric module to be passed
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* into target_fabric_configfs_register().
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*/
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struct target_fabric_configfs *target_fabric_configfs_init(
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struct module *fabric_mod,
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const char *name)
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{
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struct target_fabric_configfs *tf;
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if (!(name)) {
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pr_err("Unable to locate passed fabric name\n");
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return ERR_PTR(-EINVAL);
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}
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if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) {
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pr_err("Passed name: %s exceeds TARGET_FABRIC"
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"_NAME_SIZE\n", name);
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return ERR_PTR(-EINVAL);
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}
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tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL);
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if (!tf)
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return ERR_PTR(-ENOMEM);
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INIT_LIST_HEAD(&tf->tf_list);
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atomic_set(&tf->tf_access_cnt, 0);
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/*
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* Setup the default generic struct config_item_type's (cits) in
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* struct target_fabric_configfs->tf_cit_tmpl
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*/
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tf->tf_module = fabric_mod;
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target_fabric_setup_cits(tf);
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tf->tf_subsys = target_core_subsystem[0];
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snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name);
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mutex_lock(&g_tf_lock);
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list_add_tail(&tf->tf_list, &g_tf_list);
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mutex_unlock(&g_tf_lock);
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pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>"
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">>>>>>>>>>>>>>\n");
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pr_debug("Initialized struct target_fabric_configfs: %p for"
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" %s\n", tf, tf->tf_name);
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return tf;
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}
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EXPORT_SYMBOL(target_fabric_configfs_init);
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/*
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* Called by fabric plugins after FAILED target_fabric_configfs_register() call.
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*/
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void target_fabric_configfs_free(
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struct target_fabric_configfs *tf)
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{
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mutex_lock(&g_tf_lock);
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list_del(&tf->tf_list);
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mutex_unlock(&g_tf_lock);
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kfree(tf);
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}
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EXPORT_SYMBOL(target_fabric_configfs_free);
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/*
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* Perform a sanity check of the passed tf->tf_ops before completing
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* TCM fabric module registration.
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*/
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static int target_fabric_tf_ops_check(
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struct target_fabric_configfs *tf)
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{
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struct target_core_fabric_ops *tfo = &tf->tf_ops;
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if (!tfo->get_fabric_name) {
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pr_err("Missing tfo->get_fabric_name()\n");
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return -EINVAL;
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}
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if (!tfo->get_fabric_proto_ident) {
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pr_err("Missing tfo->get_fabric_proto_ident()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_get_wwn) {
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pr_err("Missing tfo->tpg_get_wwn()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_get_tag) {
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pr_err("Missing tfo->tpg_get_tag()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_get_default_depth) {
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pr_err("Missing tfo->tpg_get_default_depth()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_get_pr_transport_id) {
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pr_err("Missing tfo->tpg_get_pr_transport_id()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_get_pr_transport_id_len) {
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pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_check_demo_mode) {
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pr_err("Missing tfo->tpg_check_demo_mode()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_check_demo_mode_cache) {
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pr_err("Missing tfo->tpg_check_demo_mode_cache()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_check_demo_mode_write_protect) {
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pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_check_prod_mode_write_protect) {
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pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_alloc_fabric_acl) {
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pr_err("Missing tfo->tpg_alloc_fabric_acl()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_release_fabric_acl) {
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pr_err("Missing tfo->tpg_release_fabric_acl()\n");
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return -EINVAL;
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}
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if (!tfo->tpg_get_inst_index) {
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pr_err("Missing tfo->tpg_get_inst_index()\n");
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return -EINVAL;
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}
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if (!tfo->release_cmd) {
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pr_err("Missing tfo->release_cmd()\n");
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return -EINVAL;
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}
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if (!tfo->shutdown_session) {
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pr_err("Missing tfo->shutdown_session()\n");
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return -EINVAL;
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}
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if (!tfo->close_session) {
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pr_err("Missing tfo->close_session()\n");
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return -EINVAL;
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}
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if (!tfo->sess_get_index) {
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pr_err("Missing tfo->sess_get_index()\n");
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return -EINVAL;
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}
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if (!tfo->write_pending) {
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pr_err("Missing tfo->write_pending()\n");
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return -EINVAL;
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}
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if (!tfo->write_pending_status) {
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pr_err("Missing tfo->write_pending_status()\n");
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return -EINVAL;
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}
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if (!tfo->set_default_node_attributes) {
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pr_err("Missing tfo->set_default_node_attributes()\n");
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return -EINVAL;
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}
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if (!tfo->get_task_tag) {
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pr_err("Missing tfo->get_task_tag()\n");
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return -EINVAL;
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}
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if (!tfo->get_cmd_state) {
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pr_err("Missing tfo->get_cmd_state()\n");
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return -EINVAL;
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}
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if (!tfo->queue_data_in) {
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pr_err("Missing tfo->queue_data_in()\n");
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return -EINVAL;
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}
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if (!tfo->queue_status) {
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pr_err("Missing tfo->queue_status()\n");
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return -EINVAL;
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}
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if (!tfo->queue_tm_rsp) {
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pr_err("Missing tfo->queue_tm_rsp()\n");
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return -EINVAL;
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}
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|
/*
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* We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn()
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* tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in
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* target_core_fabric_configfs.c WWN+TPG group context code.
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*/
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if (!tfo->fabric_make_wwn) {
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pr_err("Missing tfo->fabric_make_wwn()\n");
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return -EINVAL;
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}
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if (!tfo->fabric_drop_wwn) {
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pr_err("Missing tfo->fabric_drop_wwn()\n");
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return -EINVAL;
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}
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if (!tfo->fabric_make_tpg) {
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pr_err("Missing tfo->fabric_make_tpg()\n");
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return -EINVAL;
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}
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if (!tfo->fabric_drop_tpg) {
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pr_err("Missing tfo->fabric_drop_tpg()\n");
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return -EINVAL;
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}
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return 0;
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}
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|
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/*
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* Called 2nd from fabric module with returned parameter of
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* struct target_fabric_configfs * from target_fabric_configfs_init().
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*
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* Upon a successful registration, the new fabric's struct config_item is
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* return. Also, a pointer to this struct is set in the passed
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* struct target_fabric_configfs.
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*/
|
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int target_fabric_configfs_register(
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struct target_fabric_configfs *tf)
|
|
{
|
|
int ret;
|
|
|
|
if (!tf) {
|
|
pr_err("Unable to locate target_fabric_configfs"
|
|
" pointer\n");
|
|
return -EINVAL;
|
|
}
|
|
if (!tf->tf_subsys) {
|
|
pr_err("Unable to target struct config_subsystem"
|
|
" pointer\n");
|
|
return -EINVAL;
|
|
}
|
|
ret = target_fabric_tf_ops_check(tf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>"
|
|
">>>>>>>>>>\n");
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(target_fabric_configfs_register);
|
|
|
|
void target_fabric_configfs_deregister(
|
|
struct target_fabric_configfs *tf)
|
|
{
|
|
struct configfs_subsystem *su;
|
|
|
|
if (!tf) {
|
|
pr_err("Unable to locate passed target_fabric_"
|
|
"configfs\n");
|
|
return;
|
|
}
|
|
su = tf->tf_subsys;
|
|
if (!su) {
|
|
pr_err("Unable to locate passed tf->tf_subsys"
|
|
" pointer\n");
|
|
return;
|
|
}
|
|
pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>"
|
|
">>>>>>>>>>>>\n");
|
|
mutex_lock(&g_tf_lock);
|
|
if (atomic_read(&tf->tf_access_cnt)) {
|
|
mutex_unlock(&g_tf_lock);
|
|
pr_err("Non zero tf->tf_access_cnt for fabric %s\n",
|
|
tf->tf_name);
|
|
BUG();
|
|
}
|
|
list_del(&tf->tf_list);
|
|
mutex_unlock(&g_tf_lock);
|
|
|
|
pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:"
|
|
" %s\n", tf->tf_name);
|
|
tf->tf_module = NULL;
|
|
tf->tf_subsys = NULL;
|
|
kfree(tf);
|
|
|
|
pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>"
|
|
">>>>>\n");
|
|
}
|
|
EXPORT_SYMBOL(target_fabric_configfs_deregister);
|
|
|
|
/*##############################################################################
|
|
// Stop functions called by external Target Fabrics Modules
|
|
//############################################################################*/
|
|
|
|
/* Start functions for struct config_item_type target_core_dev_attrib_cit */
|
|
|
|
#define DEF_DEV_ATTRIB_SHOW(_name) \
|
|
static ssize_t target_core_dev_show_attr_##_name( \
|
|
struct se_dev_attrib *da, \
|
|
char *page) \
|
|
{ \
|
|
return snprintf(page, PAGE_SIZE, "%u\n", \
|
|
(u32)da->da_dev->dev_attrib._name); \
|
|
}
|
|
|
|
#define DEF_DEV_ATTRIB_STORE(_name) \
|
|
static ssize_t target_core_dev_store_attr_##_name( \
|
|
struct se_dev_attrib *da, \
|
|
const char *page, \
|
|
size_t count) \
|
|
{ \
|
|
unsigned long val; \
|
|
int ret; \
|
|
\
|
|
ret = strict_strtoul(page, 0, &val); \
|
|
if (ret < 0) { \
|
|
pr_err("strict_strtoul() failed with" \
|
|
" ret: %d\n", ret); \
|
|
return -EINVAL; \
|
|
} \
|
|
ret = se_dev_set_##_name(da->da_dev, (u32)val); \
|
|
\
|
|
return (!ret) ? count : -EINVAL; \
|
|
}
|
|
|
|
#define DEF_DEV_ATTRIB(_name) \
|
|
DEF_DEV_ATTRIB_SHOW(_name); \
|
|
DEF_DEV_ATTRIB_STORE(_name);
|
|
|
|
#define DEF_DEV_ATTRIB_RO(_name) \
|
|
DEF_DEV_ATTRIB_SHOW(_name);
|
|
|
|
CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib);
|
|
#define SE_DEV_ATTR(_name, _mode) \
|
|
static struct target_core_dev_attrib_attribute \
|
|
target_core_dev_attrib_##_name = \
|
|
__CONFIGFS_EATTR(_name, _mode, \
|
|
target_core_dev_show_attr_##_name, \
|
|
target_core_dev_store_attr_##_name);
|
|
|
|
#define SE_DEV_ATTR_RO(_name); \
|
|
static struct target_core_dev_attrib_attribute \
|
|
target_core_dev_attrib_##_name = \
|
|
__CONFIGFS_EATTR_RO(_name, \
|
|
target_core_dev_show_attr_##_name);
|
|
|
|
DEF_DEV_ATTRIB(emulate_model_alias);
|
|
SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(emulate_dpo);
|
|
SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(emulate_fua_write);
|
|
SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(emulate_fua_read);
|
|
SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(emulate_write_cache);
|
|
SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl);
|
|
SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(emulate_tas);
|
|
SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(emulate_tpu);
|
|
SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(emulate_tpws);
|
|
SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(enforce_pr_isids);
|
|
SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(is_nonrot);
|
|
SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(emulate_rest_reord);
|
|
SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB_RO(hw_block_size);
|
|
SE_DEV_ATTR_RO(hw_block_size);
|
|
|
|
DEF_DEV_ATTRIB(block_size);
|
|
SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB_RO(hw_max_sectors);
|
|
SE_DEV_ATTR_RO(hw_max_sectors);
|
|
|
|
DEF_DEV_ATTRIB(fabric_max_sectors);
|
|
SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(optimal_sectors);
|
|
SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB_RO(hw_queue_depth);
|
|
SE_DEV_ATTR_RO(hw_queue_depth);
|
|
|
|
DEF_DEV_ATTRIB(queue_depth);
|
|
SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(max_unmap_lba_count);
|
|
SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(max_unmap_block_desc_count);
|
|
SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(unmap_granularity);
|
|
SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(unmap_granularity_alignment);
|
|
SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR);
|
|
|
|
DEF_DEV_ATTRIB(max_write_same_len);
|
|
SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR);
|
|
|
|
CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group);
|
|
|
|
static struct configfs_attribute *target_core_dev_attrib_attrs[] = {
|
|
&target_core_dev_attrib_emulate_model_alias.attr,
|
|
&target_core_dev_attrib_emulate_dpo.attr,
|
|
&target_core_dev_attrib_emulate_fua_write.attr,
|
|
&target_core_dev_attrib_emulate_fua_read.attr,
|
|
&target_core_dev_attrib_emulate_write_cache.attr,
|
|
&target_core_dev_attrib_emulate_ua_intlck_ctrl.attr,
|
|
&target_core_dev_attrib_emulate_tas.attr,
|
|
&target_core_dev_attrib_emulate_tpu.attr,
|
|
&target_core_dev_attrib_emulate_tpws.attr,
|
|
&target_core_dev_attrib_enforce_pr_isids.attr,
|
|
&target_core_dev_attrib_is_nonrot.attr,
|
|
&target_core_dev_attrib_emulate_rest_reord.attr,
|
|
&target_core_dev_attrib_hw_block_size.attr,
|
|
&target_core_dev_attrib_block_size.attr,
|
|
&target_core_dev_attrib_hw_max_sectors.attr,
|
|
&target_core_dev_attrib_fabric_max_sectors.attr,
|
|
&target_core_dev_attrib_optimal_sectors.attr,
|
|
&target_core_dev_attrib_hw_queue_depth.attr,
|
|
&target_core_dev_attrib_queue_depth.attr,
|
|
&target_core_dev_attrib_max_unmap_lba_count.attr,
|
|
&target_core_dev_attrib_max_unmap_block_desc_count.attr,
|
|
&target_core_dev_attrib_unmap_granularity.attr,
|
|
&target_core_dev_attrib_unmap_granularity_alignment.attr,
|
|
&target_core_dev_attrib_max_write_same_len.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct configfs_item_operations target_core_dev_attrib_ops = {
|
|
.show_attribute = target_core_dev_attrib_attr_show,
|
|
.store_attribute = target_core_dev_attrib_attr_store,
|
|
};
|
|
|
|
static struct config_item_type target_core_dev_attrib_cit = {
|
|
.ct_item_ops = &target_core_dev_attrib_ops,
|
|
.ct_attrs = target_core_dev_attrib_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_dev_attrib_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_dev_wwn_cit */
|
|
|
|
CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn);
|
|
#define SE_DEV_WWN_ATTR(_name, _mode) \
|
|
static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \
|
|
__CONFIGFS_EATTR(_name, _mode, \
|
|
target_core_dev_wwn_show_attr_##_name, \
|
|
target_core_dev_wwn_store_attr_##_name);
|
|
|
|
#define SE_DEV_WWN_ATTR_RO(_name); \
|
|
do { \
|
|
static struct target_core_dev_wwn_attribute \
|
|
target_core_dev_wwn_##_name = \
|
|
__CONFIGFS_EATTR_RO(_name, \
|
|
target_core_dev_wwn_show_attr_##_name); \
|
|
} while (0);
|
|
|
|
/*
|
|
* VPD page 0x80 Unit serial
|
|
*/
|
|
static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial(
|
|
struct t10_wwn *t10_wwn,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "T10 VPD Unit Serial Number: %s\n",
|
|
&t10_wwn->unit_serial[0]);
|
|
}
|
|
|
|
static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial(
|
|
struct t10_wwn *t10_wwn,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
struct se_device *dev = t10_wwn->t10_dev;
|
|
unsigned char buf[INQUIRY_VPD_SERIAL_LEN];
|
|
|
|
/*
|
|
* If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial
|
|
* from the struct scsi_device level firmware, do not allow
|
|
* VPD Unit Serial to be emulated.
|
|
*
|
|
* Note this struct scsi_device could also be emulating VPD
|
|
* information from its drivers/scsi LLD. But for now we assume
|
|
* it is doing 'the right thing' wrt a world wide unique
|
|
* VPD Unit Serial Number that OS dependent multipath can depend on.
|
|
*/
|
|
if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) {
|
|
pr_err("Underlying SCSI device firmware provided VPD"
|
|
" Unit Serial, ignoring request\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) {
|
|
pr_err("Emulated VPD Unit Serial exceeds"
|
|
" INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN);
|
|
return -EOVERFLOW;
|
|
}
|
|
/*
|
|
* Check to see if any active $FABRIC_MOD exports exist. If they
|
|
* do exist, fail here as changing this information on the fly
|
|
* (underneath the initiator side OS dependent multipath code)
|
|
* could cause negative effects.
|
|
*/
|
|
if (dev->export_count) {
|
|
pr_err("Unable to set VPD Unit Serial while"
|
|
" active %d $FABRIC_MOD exports exist\n",
|
|
dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* This currently assumes ASCII encoding for emulated VPD Unit Serial.
|
|
*
|
|
* Also, strip any newline added from the userspace
|
|
* echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial
|
|
*/
|
|
memset(buf, 0, INQUIRY_VPD_SERIAL_LEN);
|
|
snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page);
|
|
snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN,
|
|
"%s", strstrip(buf));
|
|
dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL;
|
|
|
|
pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:"
|
|
" %s\n", dev->t10_wwn.unit_serial);
|
|
|
|
return count;
|
|
}
|
|
|
|
SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* VPD page 0x83 Protocol Identifier
|
|
*/
|
|
static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier(
|
|
struct t10_wwn *t10_wwn,
|
|
char *page)
|
|
{
|
|
struct t10_vpd *vpd;
|
|
unsigned char buf[VPD_TMP_BUF_SIZE];
|
|
ssize_t len = 0;
|
|
|
|
memset(buf, 0, VPD_TMP_BUF_SIZE);
|
|
|
|
spin_lock(&t10_wwn->t10_vpd_lock);
|
|
list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) {
|
|
if (!vpd->protocol_identifier_set)
|
|
continue;
|
|
|
|
transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE);
|
|
|
|
if (len + strlen(buf) >= PAGE_SIZE)
|
|
break;
|
|
|
|
len += sprintf(page+len, "%s", buf);
|
|
}
|
|
spin_unlock(&t10_wwn->t10_vpd_lock);
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier(
|
|
struct t10_wwn *t10_wwn,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* Generic wrapper for dumping VPD identifiers by association.
|
|
*/
|
|
#define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \
|
|
static ssize_t target_core_dev_wwn_show_attr_##_name( \
|
|
struct t10_wwn *t10_wwn, \
|
|
char *page) \
|
|
{ \
|
|
struct t10_vpd *vpd; \
|
|
unsigned char buf[VPD_TMP_BUF_SIZE]; \
|
|
ssize_t len = 0; \
|
|
\
|
|
spin_lock(&t10_wwn->t10_vpd_lock); \
|
|
list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \
|
|
if (vpd->association != _assoc) \
|
|
continue; \
|
|
\
|
|
memset(buf, 0, VPD_TMP_BUF_SIZE); \
|
|
transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \
|
|
if (len + strlen(buf) >= PAGE_SIZE) \
|
|
break; \
|
|
len += sprintf(page+len, "%s", buf); \
|
|
\
|
|
memset(buf, 0, VPD_TMP_BUF_SIZE); \
|
|
transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \
|
|
if (len + strlen(buf) >= PAGE_SIZE) \
|
|
break; \
|
|
len += sprintf(page+len, "%s", buf); \
|
|
\
|
|
memset(buf, 0, VPD_TMP_BUF_SIZE); \
|
|
transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \
|
|
if (len + strlen(buf) >= PAGE_SIZE) \
|
|
break; \
|
|
len += sprintf(page+len, "%s", buf); \
|
|
} \
|
|
spin_unlock(&t10_wwn->t10_vpd_lock); \
|
|
\
|
|
return len; \
|
|
}
|
|
|
|
/*
|
|
* VPD page 0x83 Association: Logical Unit
|
|
*/
|
|
DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00);
|
|
|
|
static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit(
|
|
struct t10_wwn *t10_wwn,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* VPD page 0x83 Association: Target Port
|
|
*/
|
|
DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10);
|
|
|
|
static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port(
|
|
struct t10_wwn *t10_wwn,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* VPD page 0x83 Association: SCSI Target Device
|
|
*/
|
|
DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20);
|
|
|
|
static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device(
|
|
struct t10_wwn *t10_wwn,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR);
|
|
|
|
CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group);
|
|
|
|
static struct configfs_attribute *target_core_dev_wwn_attrs[] = {
|
|
&target_core_dev_wwn_vpd_unit_serial.attr,
|
|
&target_core_dev_wwn_vpd_protocol_identifier.attr,
|
|
&target_core_dev_wwn_vpd_assoc_logical_unit.attr,
|
|
&target_core_dev_wwn_vpd_assoc_target_port.attr,
|
|
&target_core_dev_wwn_vpd_assoc_scsi_target_device.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct configfs_item_operations target_core_dev_wwn_ops = {
|
|
.show_attribute = target_core_dev_wwn_attr_show,
|
|
.store_attribute = target_core_dev_wwn_attr_store,
|
|
};
|
|
|
|
static struct config_item_type target_core_dev_wwn_cit = {
|
|
.ct_item_ops = &target_core_dev_wwn_ops,
|
|
.ct_attrs = target_core_dev_wwn_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_dev_wwn_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_dev_pr_cit */
|
|
|
|
CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device);
|
|
#define SE_DEV_PR_ATTR(_name, _mode) \
|
|
static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \
|
|
__CONFIGFS_EATTR(_name, _mode, \
|
|
target_core_dev_pr_show_attr_##_name, \
|
|
target_core_dev_pr_store_attr_##_name);
|
|
|
|
#define SE_DEV_PR_ATTR_RO(_name); \
|
|
static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \
|
|
__CONFIGFS_EATTR_RO(_name, \
|
|
target_core_dev_pr_show_attr_##_name);
|
|
|
|
static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev,
|
|
char *page)
|
|
{
|
|
struct se_node_acl *se_nacl;
|
|
struct t10_pr_registration *pr_reg;
|
|
char i_buf[PR_REG_ISID_ID_LEN];
|
|
int prf_isid;
|
|
|
|
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
|
|
|
|
pr_reg = dev->dev_pr_res_holder;
|
|
if (!pr_reg)
|
|
return sprintf(page, "No SPC-3 Reservation holder\n");
|
|
|
|
se_nacl = pr_reg->pr_reg_nacl;
|
|
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
|
|
PR_REG_ISID_ID_LEN);
|
|
|
|
return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n",
|
|
se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
|
|
se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : "");
|
|
}
|
|
|
|
static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev,
|
|
char *page)
|
|
{
|
|
struct se_node_acl *se_nacl;
|
|
ssize_t len;
|
|
|
|
se_nacl = dev->dev_reserved_node_acl;
|
|
if (se_nacl) {
|
|
len = sprintf(page,
|
|
"SPC-2 Reservation: %s Initiator: %s\n",
|
|
se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
|
|
se_nacl->initiatorname);
|
|
} else {
|
|
len = sprintf(page, "No SPC-2 Reservation holder\n");
|
|
}
|
|
return len;
|
|
}
|
|
|
|
static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev,
|
|
char *page)
|
|
{
|
|
int ret;
|
|
|
|
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
|
|
return sprintf(page, "Passthrough\n");
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
|
|
ret = target_core_dev_pr_show_spc2_res(dev, page);
|
|
else
|
|
ret = target_core_dev_pr_show_spc3_res(dev, page);
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
return ret;
|
|
}
|
|
|
|
SE_DEV_PR_ATTR_RO(res_holder);
|
|
|
|
static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts(
|
|
struct se_device *dev, char *page)
|
|
{
|
|
ssize_t len = 0;
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
if (!dev->dev_pr_res_holder) {
|
|
len = sprintf(page, "No SPC-3 Reservation holder\n");
|
|
} else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) {
|
|
len = sprintf(page, "SPC-3 Reservation: All Target"
|
|
" Ports registration\n");
|
|
} else {
|
|
len = sprintf(page, "SPC-3 Reservation: Single"
|
|
" Target Port registration\n");
|
|
}
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
return len;
|
|
}
|
|
|
|
SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts);
|
|
|
|
static ssize_t target_core_dev_pr_show_attr_res_pr_generation(
|
|
struct se_device *dev, char *page)
|
|
{
|
|
return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation);
|
|
}
|
|
|
|
SE_DEV_PR_ATTR_RO(res_pr_generation);
|
|
|
|
/*
|
|
* res_pr_holder_tg_port
|
|
*/
|
|
static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port(
|
|
struct se_device *dev, char *page)
|
|
{
|
|
struct se_node_acl *se_nacl;
|
|
struct se_lun *lun;
|
|
struct se_portal_group *se_tpg;
|
|
struct t10_pr_registration *pr_reg;
|
|
struct target_core_fabric_ops *tfo;
|
|
ssize_t len = 0;
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
pr_reg = dev->dev_pr_res_holder;
|
|
if (!pr_reg) {
|
|
len = sprintf(page, "No SPC-3 Reservation holder\n");
|
|
goto out_unlock;
|
|
}
|
|
|
|
se_nacl = pr_reg->pr_reg_nacl;
|
|
se_tpg = se_nacl->se_tpg;
|
|
lun = pr_reg->pr_reg_tg_pt_lun;
|
|
tfo = se_tpg->se_tpg_tfo;
|
|
|
|
len += sprintf(page+len, "SPC-3 Reservation: %s"
|
|
" Target Node Endpoint: %s\n", tfo->get_fabric_name(),
|
|
tfo->tpg_get_wwn(se_tpg));
|
|
len += sprintf(page+len, "SPC-3 Reservation: Relative Port"
|
|
" Identifier Tag: %hu %s Portal Group Tag: %hu"
|
|
" %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi,
|
|
tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg),
|
|
tfo->get_fabric_name(), lun->unpacked_lun);
|
|
|
|
out_unlock:
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
return len;
|
|
}
|
|
|
|
SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port);
|
|
|
|
static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts(
|
|
struct se_device *dev, char *page)
|
|
{
|
|
struct target_core_fabric_ops *tfo;
|
|
struct t10_pr_registration *pr_reg;
|
|
unsigned char buf[384];
|
|
char i_buf[PR_REG_ISID_ID_LEN];
|
|
ssize_t len = 0;
|
|
int reg_count = 0, prf_isid;
|
|
|
|
len += sprintf(page+len, "SPC-3 PR Registrations:\n");
|
|
|
|
spin_lock(&dev->t10_pr.registration_lock);
|
|
list_for_each_entry(pr_reg, &dev->t10_pr.registration_list,
|
|
pr_reg_list) {
|
|
|
|
memset(buf, 0, 384);
|
|
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
|
|
tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
|
|
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
|
|
PR_REG_ISID_ID_LEN);
|
|
sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n",
|
|
tfo->get_fabric_name(),
|
|
pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ?
|
|
&i_buf[0] : "", pr_reg->pr_res_key,
|
|
pr_reg->pr_res_generation);
|
|
|
|
if (len + strlen(buf) >= PAGE_SIZE)
|
|
break;
|
|
|
|
len += sprintf(page+len, "%s", buf);
|
|
reg_count++;
|
|
}
|
|
spin_unlock(&dev->t10_pr.registration_lock);
|
|
|
|
if (!reg_count)
|
|
len += sprintf(page+len, "None\n");
|
|
|
|
return len;
|
|
}
|
|
|
|
SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts);
|
|
|
|
static ssize_t target_core_dev_pr_show_attr_res_pr_type(
|
|
struct se_device *dev, char *page)
|
|
{
|
|
struct t10_pr_registration *pr_reg;
|
|
ssize_t len = 0;
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
pr_reg = dev->dev_pr_res_holder;
|
|
if (pr_reg) {
|
|
len = sprintf(page, "SPC-3 Reservation Type: %s\n",
|
|
core_scsi3_pr_dump_type(pr_reg->pr_res_type));
|
|
} else {
|
|
len = sprintf(page, "No SPC-3 Reservation holder\n");
|
|
}
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
return len;
|
|
}
|
|
|
|
SE_DEV_PR_ATTR_RO(res_pr_type);
|
|
|
|
static ssize_t target_core_dev_pr_show_attr_res_type(
|
|
struct se_device *dev, char *page)
|
|
{
|
|
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
|
|
return sprintf(page, "SPC_PASSTHROUGH\n");
|
|
else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
|
|
return sprintf(page, "SPC2_RESERVATIONS\n");
|
|
else
|
|
return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n");
|
|
}
|
|
|
|
SE_DEV_PR_ATTR_RO(res_type);
|
|
|
|
static ssize_t target_core_dev_pr_show_attr_res_aptpl_active(
|
|
struct se_device *dev, char *page)
|
|
{
|
|
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
|
|
return 0;
|
|
|
|
return sprintf(page, "APTPL Bit Status: %s\n",
|
|
(dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled");
|
|
}
|
|
|
|
SE_DEV_PR_ATTR_RO(res_aptpl_active);
|
|
|
|
/*
|
|
* res_aptpl_metadata
|
|
*/
|
|
static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata(
|
|
struct se_device *dev, char *page)
|
|
{
|
|
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
|
|
return 0;
|
|
|
|
return sprintf(page, "Ready to process PR APTPL metadata..\n");
|
|
}
|
|
|
|
enum {
|
|
Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid,
|
|
Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope,
|
|
Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric,
|
|
Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err
|
|
};
|
|
|
|
static match_table_t tokens = {
|
|
{Opt_initiator_fabric, "initiator_fabric=%s"},
|
|
{Opt_initiator_node, "initiator_node=%s"},
|
|
{Opt_initiator_sid, "initiator_sid=%s"},
|
|
{Opt_sa_res_key, "sa_res_key=%s"},
|
|
{Opt_res_holder, "res_holder=%d"},
|
|
{Opt_res_type, "res_type=%d"},
|
|
{Opt_res_scope, "res_scope=%d"},
|
|
{Opt_res_all_tg_pt, "res_all_tg_pt=%d"},
|
|
{Opt_mapped_lun, "mapped_lun=%d"},
|
|
{Opt_target_fabric, "target_fabric=%s"},
|
|
{Opt_target_node, "target_node=%s"},
|
|
{Opt_tpgt, "tpgt=%d"},
|
|
{Opt_port_rtpi, "port_rtpi=%d"},
|
|
{Opt_target_lun, "target_lun=%d"},
|
|
{Opt_err, NULL}
|
|
};
|
|
|
|
static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
|
|
struct se_device *dev,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL;
|
|
unsigned char *t_fabric = NULL, *t_port = NULL;
|
|
char *orig, *ptr, *arg_p, *opts;
|
|
substring_t args[MAX_OPT_ARGS];
|
|
unsigned long long tmp_ll;
|
|
u64 sa_res_key = 0;
|
|
u32 mapped_lun = 0, target_lun = 0;
|
|
int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token;
|
|
u16 port_rpti = 0, tpgt = 0;
|
|
u8 type = 0, scope;
|
|
|
|
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
|
|
return 0;
|
|
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
|
|
return 0;
|
|
|
|
if (dev->export_count) {
|
|
pr_debug("Unable to process APTPL metadata while"
|
|
" active fabric exports exist\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
opts = kstrdup(page, GFP_KERNEL);
|
|
if (!opts)
|
|
return -ENOMEM;
|
|
|
|
orig = opts;
|
|
while ((ptr = strsep(&opts, ",\n")) != NULL) {
|
|
if (!*ptr)
|
|
continue;
|
|
|
|
token = match_token(ptr, tokens, args);
|
|
switch (token) {
|
|
case Opt_initiator_fabric:
|
|
i_fabric = match_strdup(&args[0]);
|
|
if (!i_fabric) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
break;
|
|
case Opt_initiator_node:
|
|
i_port = match_strdup(&args[0]);
|
|
if (!i_port) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) {
|
|
pr_err("APTPL metadata initiator_node="
|
|
" exceeds PR_APTPL_MAX_IPORT_LEN: %d\n",
|
|
PR_APTPL_MAX_IPORT_LEN);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
break;
|
|
case Opt_initiator_sid:
|
|
isid = match_strdup(&args[0]);
|
|
if (!isid) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
if (strlen(isid) >= PR_REG_ISID_LEN) {
|
|
pr_err("APTPL metadata initiator_isid"
|
|
"= exceeds PR_REG_ISID_LEN: %d\n",
|
|
PR_REG_ISID_LEN);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
break;
|
|
case Opt_sa_res_key:
|
|
arg_p = match_strdup(&args[0]);
|
|
if (!arg_p) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
ret = strict_strtoull(arg_p, 0, &tmp_ll);
|
|
if (ret < 0) {
|
|
pr_err("strict_strtoull() failed for"
|
|
" sa_res_key=\n");
|
|
goto out;
|
|
}
|
|
sa_res_key = (u64)tmp_ll;
|
|
break;
|
|
/*
|
|
* PR APTPL Metadata for Reservation
|
|
*/
|
|
case Opt_res_holder:
|
|
match_int(args, &arg);
|
|
res_holder = arg;
|
|
break;
|
|
case Opt_res_type:
|
|
match_int(args, &arg);
|
|
type = (u8)arg;
|
|
break;
|
|
case Opt_res_scope:
|
|
match_int(args, &arg);
|
|
scope = (u8)arg;
|
|
break;
|
|
case Opt_res_all_tg_pt:
|
|
match_int(args, &arg);
|
|
all_tg_pt = (int)arg;
|
|
break;
|
|
case Opt_mapped_lun:
|
|
match_int(args, &arg);
|
|
mapped_lun = (u32)arg;
|
|
break;
|
|
/*
|
|
* PR APTPL Metadata for Target Port
|
|
*/
|
|
case Opt_target_fabric:
|
|
t_fabric = match_strdup(&args[0]);
|
|
if (!t_fabric) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
break;
|
|
case Opt_target_node:
|
|
t_port = match_strdup(&args[0]);
|
|
if (!t_port) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) {
|
|
pr_err("APTPL metadata target_node="
|
|
" exceeds PR_APTPL_MAX_TPORT_LEN: %d\n",
|
|
PR_APTPL_MAX_TPORT_LEN);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
break;
|
|
case Opt_tpgt:
|
|
match_int(args, &arg);
|
|
tpgt = (u16)arg;
|
|
break;
|
|
case Opt_port_rtpi:
|
|
match_int(args, &arg);
|
|
port_rpti = (u16)arg;
|
|
break;
|
|
case Opt_target_lun:
|
|
match_int(args, &arg);
|
|
target_lun = (u32)arg;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!i_port || !t_port || !sa_res_key) {
|
|
pr_err("Illegal parameters for APTPL registration\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (res_holder && !(type)) {
|
|
pr_err("Illegal PR type: 0x%02x for reservation"
|
|
" holder\n", type);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key,
|
|
i_port, isid, mapped_lun, t_port, tpgt, target_lun,
|
|
res_holder, all_tg_pt, type);
|
|
out:
|
|
kfree(i_fabric);
|
|
kfree(i_port);
|
|
kfree(isid);
|
|
kfree(t_fabric);
|
|
kfree(t_port);
|
|
kfree(orig);
|
|
return (ret == 0) ? count : ret;
|
|
}
|
|
|
|
SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR);
|
|
|
|
CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group);
|
|
|
|
static struct configfs_attribute *target_core_dev_pr_attrs[] = {
|
|
&target_core_dev_pr_res_holder.attr,
|
|
&target_core_dev_pr_res_pr_all_tgt_pts.attr,
|
|
&target_core_dev_pr_res_pr_generation.attr,
|
|
&target_core_dev_pr_res_pr_holder_tg_port.attr,
|
|
&target_core_dev_pr_res_pr_registered_i_pts.attr,
|
|
&target_core_dev_pr_res_pr_type.attr,
|
|
&target_core_dev_pr_res_type.attr,
|
|
&target_core_dev_pr_res_aptpl_active.attr,
|
|
&target_core_dev_pr_res_aptpl_metadata.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct configfs_item_operations target_core_dev_pr_ops = {
|
|
.show_attribute = target_core_dev_pr_attr_show,
|
|
.store_attribute = target_core_dev_pr_attr_store,
|
|
};
|
|
|
|
static struct config_item_type target_core_dev_pr_cit = {
|
|
.ct_item_ops = &target_core_dev_pr_ops,
|
|
.ct_attrs = target_core_dev_pr_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_dev_pr_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_dev_cit */
|
|
|
|
static ssize_t target_core_show_dev_info(void *p, char *page)
|
|
{
|
|
struct se_device *dev = p;
|
|
struct se_subsystem_api *t = dev->transport;
|
|
int bl = 0;
|
|
ssize_t read_bytes = 0;
|
|
|
|
transport_dump_dev_state(dev, page, &bl);
|
|
read_bytes += bl;
|
|
read_bytes += t->show_configfs_dev_params(dev, page+read_bytes);
|
|
return read_bytes;
|
|
}
|
|
|
|
static struct target_core_configfs_attribute target_core_attr_dev_info = {
|
|
.attr = { .ca_owner = THIS_MODULE,
|
|
.ca_name = "info",
|
|
.ca_mode = S_IRUGO },
|
|
.show = target_core_show_dev_info,
|
|
.store = NULL,
|
|
};
|
|
|
|
static ssize_t target_core_store_dev_control(
|
|
void *p,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
struct se_device *dev = p;
|
|
struct se_subsystem_api *t = dev->transport;
|
|
|
|
return t->set_configfs_dev_params(dev, page, count);
|
|
}
|
|
|
|
static struct target_core_configfs_attribute target_core_attr_dev_control = {
|
|
.attr = { .ca_owner = THIS_MODULE,
|
|
.ca_name = "control",
|
|
.ca_mode = S_IWUSR },
|
|
.show = NULL,
|
|
.store = target_core_store_dev_control,
|
|
};
|
|
|
|
static ssize_t target_core_show_dev_alias(void *p, char *page)
|
|
{
|
|
struct se_device *dev = p;
|
|
|
|
if (!(dev->dev_flags & DF_USING_ALIAS))
|
|
return 0;
|
|
|
|
return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias);
|
|
}
|
|
|
|
static ssize_t target_core_store_dev_alias(
|
|
void *p,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
struct se_device *dev = p;
|
|
struct se_hba *hba = dev->se_hba;
|
|
ssize_t read_bytes;
|
|
|
|
if (count > (SE_DEV_ALIAS_LEN-1)) {
|
|
pr_err("alias count: %d exceeds"
|
|
" SE_DEV_ALIAS_LEN-1: %u\n", (int)count,
|
|
SE_DEV_ALIAS_LEN-1);
|
|
return -EINVAL;
|
|
}
|
|
|
|
read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page);
|
|
if (!read_bytes)
|
|
return -EINVAL;
|
|
if (dev->dev_alias[read_bytes - 1] == '\n')
|
|
dev->dev_alias[read_bytes - 1] = '\0';
|
|
|
|
dev->dev_flags |= DF_USING_ALIAS;
|
|
|
|
pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n",
|
|
config_item_name(&hba->hba_group.cg_item),
|
|
config_item_name(&dev->dev_group.cg_item),
|
|
dev->dev_alias);
|
|
|
|
return read_bytes;
|
|
}
|
|
|
|
static struct target_core_configfs_attribute target_core_attr_dev_alias = {
|
|
.attr = { .ca_owner = THIS_MODULE,
|
|
.ca_name = "alias",
|
|
.ca_mode = S_IRUGO | S_IWUSR },
|
|
.show = target_core_show_dev_alias,
|
|
.store = target_core_store_dev_alias,
|
|
};
|
|
|
|
static ssize_t target_core_show_dev_udev_path(void *p, char *page)
|
|
{
|
|
struct se_device *dev = p;
|
|
|
|
if (!(dev->dev_flags & DF_USING_UDEV_PATH))
|
|
return 0;
|
|
|
|
return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path);
|
|
}
|
|
|
|
static ssize_t target_core_store_dev_udev_path(
|
|
void *p,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
struct se_device *dev = p;
|
|
struct se_hba *hba = dev->se_hba;
|
|
ssize_t read_bytes;
|
|
|
|
if (count > (SE_UDEV_PATH_LEN-1)) {
|
|
pr_err("udev_path count: %d exceeds"
|
|
" SE_UDEV_PATH_LEN-1: %u\n", (int)count,
|
|
SE_UDEV_PATH_LEN-1);
|
|
return -EINVAL;
|
|
}
|
|
|
|
read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN,
|
|
"%s", page);
|
|
if (!read_bytes)
|
|
return -EINVAL;
|
|
if (dev->udev_path[read_bytes - 1] == '\n')
|
|
dev->udev_path[read_bytes - 1] = '\0';
|
|
|
|
dev->dev_flags |= DF_USING_UDEV_PATH;
|
|
|
|
pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n",
|
|
config_item_name(&hba->hba_group.cg_item),
|
|
config_item_name(&dev->dev_group.cg_item),
|
|
dev->udev_path);
|
|
|
|
return read_bytes;
|
|
}
|
|
|
|
static struct target_core_configfs_attribute target_core_attr_dev_udev_path = {
|
|
.attr = { .ca_owner = THIS_MODULE,
|
|
.ca_name = "udev_path",
|
|
.ca_mode = S_IRUGO | S_IWUSR },
|
|
.show = target_core_show_dev_udev_path,
|
|
.store = target_core_store_dev_udev_path,
|
|
};
|
|
|
|
static ssize_t target_core_store_dev_enable(
|
|
void *p,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
struct se_device *dev = p;
|
|
char *ptr;
|
|
int ret;
|
|
|
|
ptr = strstr(page, "1");
|
|
if (!ptr) {
|
|
pr_err("For dev_enable ops, only valid value"
|
|
" is \"1\"\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = target_configure_device(dev);
|
|
if (ret)
|
|
return ret;
|
|
return count;
|
|
}
|
|
|
|
static struct target_core_configfs_attribute target_core_attr_dev_enable = {
|
|
.attr = { .ca_owner = THIS_MODULE,
|
|
.ca_name = "enable",
|
|
.ca_mode = S_IWUSR },
|
|
.show = NULL,
|
|
.store = target_core_store_dev_enable,
|
|
};
|
|
|
|
static ssize_t target_core_show_alua_lu_gp(void *p, char *page)
|
|
{
|
|
struct se_device *dev = p;
|
|
struct config_item *lu_ci;
|
|
struct t10_alua_lu_gp *lu_gp;
|
|
struct t10_alua_lu_gp_member *lu_gp_mem;
|
|
ssize_t len = 0;
|
|
|
|
lu_gp_mem = dev->dev_alua_lu_gp_mem;
|
|
if (!lu_gp_mem)
|
|
return 0;
|
|
|
|
spin_lock(&lu_gp_mem->lu_gp_mem_lock);
|
|
lu_gp = lu_gp_mem->lu_gp;
|
|
if (lu_gp) {
|
|
lu_ci = &lu_gp->lu_gp_group.cg_item;
|
|
len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n",
|
|
config_item_name(lu_ci), lu_gp->lu_gp_id);
|
|
}
|
|
spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t target_core_store_alua_lu_gp(
|
|
void *p,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
struct se_device *dev = p;
|
|
struct se_hba *hba = dev->se_hba;
|
|
struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL;
|
|
struct t10_alua_lu_gp_member *lu_gp_mem;
|
|
unsigned char buf[LU_GROUP_NAME_BUF];
|
|
int move = 0;
|
|
|
|
lu_gp_mem = dev->dev_alua_lu_gp_mem;
|
|
if (!lu_gp_mem)
|
|
return 0;
|
|
|
|
if (count > LU_GROUP_NAME_BUF) {
|
|
pr_err("ALUA LU Group Alias too large!\n");
|
|
return -EINVAL;
|
|
}
|
|
memset(buf, 0, LU_GROUP_NAME_BUF);
|
|
memcpy(buf, page, count);
|
|
/*
|
|
* Any ALUA logical unit alias besides "NULL" means we will be
|
|
* making a new group association.
|
|
*/
|
|
if (strcmp(strstrip(buf), "NULL")) {
|
|
/*
|
|
* core_alua_get_lu_gp_by_name() will increment reference to
|
|
* struct t10_alua_lu_gp. This reference is released with
|
|
* core_alua_get_lu_gp_by_name below().
|
|
*/
|
|
lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf));
|
|
if (!lu_gp_new)
|
|
return -ENODEV;
|
|
}
|
|
|
|
spin_lock(&lu_gp_mem->lu_gp_mem_lock);
|
|
lu_gp = lu_gp_mem->lu_gp;
|
|
if (lu_gp) {
|
|
/*
|
|
* Clearing an existing lu_gp association, and replacing
|
|
* with NULL
|
|
*/
|
|
if (!lu_gp_new) {
|
|
pr_debug("Target_Core_ConfigFS: Releasing %s/%s"
|
|
" from ALUA LU Group: core/alua/lu_gps/%s, ID:"
|
|
" %hu\n",
|
|
config_item_name(&hba->hba_group.cg_item),
|
|
config_item_name(&dev->dev_group.cg_item),
|
|
config_item_name(&lu_gp->lu_gp_group.cg_item),
|
|
lu_gp->lu_gp_id);
|
|
|
|
__core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
|
|
spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
|
|
|
|
return count;
|
|
}
|
|
/*
|
|
* Removing existing association of lu_gp_mem with lu_gp
|
|
*/
|
|
__core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
|
|
move = 1;
|
|
}
|
|
/*
|
|
* Associate lu_gp_mem with lu_gp_new.
|
|
*/
|
|
__core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new);
|
|
spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
|
|
|
|
pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:"
|
|
" core/alua/lu_gps/%s, ID: %hu\n",
|
|
(move) ? "Moving" : "Adding",
|
|
config_item_name(&hba->hba_group.cg_item),
|
|
config_item_name(&dev->dev_group.cg_item),
|
|
config_item_name(&lu_gp_new->lu_gp_group.cg_item),
|
|
lu_gp_new->lu_gp_id);
|
|
|
|
core_alua_put_lu_gp_from_name(lu_gp_new);
|
|
return count;
|
|
}
|
|
|
|
static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = {
|
|
.attr = { .ca_owner = THIS_MODULE,
|
|
.ca_name = "alua_lu_gp",
|
|
.ca_mode = S_IRUGO | S_IWUSR },
|
|
.show = target_core_show_alua_lu_gp,
|
|
.store = target_core_store_alua_lu_gp,
|
|
};
|
|
|
|
static struct configfs_attribute *lio_core_dev_attrs[] = {
|
|
&target_core_attr_dev_info.attr,
|
|
&target_core_attr_dev_control.attr,
|
|
&target_core_attr_dev_alias.attr,
|
|
&target_core_attr_dev_udev_path.attr,
|
|
&target_core_attr_dev_enable.attr,
|
|
&target_core_attr_dev_alua_lu_gp.attr,
|
|
NULL,
|
|
};
|
|
|
|
static void target_core_dev_release(struct config_item *item)
|
|
{
|
|
struct config_group *dev_cg = to_config_group(item);
|
|
struct se_device *dev =
|
|
container_of(dev_cg, struct se_device, dev_group);
|
|
|
|
kfree(dev_cg->default_groups);
|
|
target_free_device(dev);
|
|
}
|
|
|
|
static ssize_t target_core_dev_show(struct config_item *item,
|
|
struct configfs_attribute *attr,
|
|
char *page)
|
|
{
|
|
struct config_group *dev_cg = to_config_group(item);
|
|
struct se_device *dev =
|
|
container_of(dev_cg, struct se_device, dev_group);
|
|
struct target_core_configfs_attribute *tc_attr = container_of(
|
|
attr, struct target_core_configfs_attribute, attr);
|
|
|
|
if (!tc_attr->show)
|
|
return -EINVAL;
|
|
|
|
return tc_attr->show(dev, page);
|
|
}
|
|
|
|
static ssize_t target_core_dev_store(struct config_item *item,
|
|
struct configfs_attribute *attr,
|
|
const char *page, size_t count)
|
|
{
|
|
struct config_group *dev_cg = to_config_group(item);
|
|
struct se_device *dev =
|
|
container_of(dev_cg, struct se_device, dev_group);
|
|
struct target_core_configfs_attribute *tc_attr = container_of(
|
|
attr, struct target_core_configfs_attribute, attr);
|
|
|
|
if (!tc_attr->store)
|
|
return -EINVAL;
|
|
|
|
return tc_attr->store(dev, page, count);
|
|
}
|
|
|
|
static struct configfs_item_operations target_core_dev_item_ops = {
|
|
.release = target_core_dev_release,
|
|
.show_attribute = target_core_dev_show,
|
|
.store_attribute = target_core_dev_store,
|
|
};
|
|
|
|
static struct config_item_type target_core_dev_cit = {
|
|
.ct_item_ops = &target_core_dev_item_ops,
|
|
.ct_attrs = lio_core_dev_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_dev_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_alua_lu_gp_cit */
|
|
|
|
CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp);
|
|
#define SE_DEV_ALUA_LU_ATTR(_name, _mode) \
|
|
static struct target_core_alua_lu_gp_attribute \
|
|
target_core_alua_lu_gp_##_name = \
|
|
__CONFIGFS_EATTR(_name, _mode, \
|
|
target_core_alua_lu_gp_show_attr_##_name, \
|
|
target_core_alua_lu_gp_store_attr_##_name);
|
|
|
|
#define SE_DEV_ALUA_LU_ATTR_RO(_name) \
|
|
static struct target_core_alua_lu_gp_attribute \
|
|
target_core_alua_lu_gp_##_name = \
|
|
__CONFIGFS_EATTR_RO(_name, \
|
|
target_core_alua_lu_gp_show_attr_##_name);
|
|
|
|
/*
|
|
* lu_gp_id
|
|
*/
|
|
static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id(
|
|
struct t10_alua_lu_gp *lu_gp,
|
|
char *page)
|
|
{
|
|
if (!lu_gp->lu_gp_valid_id)
|
|
return 0;
|
|
|
|
return sprintf(page, "%hu\n", lu_gp->lu_gp_id);
|
|
}
|
|
|
|
static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id(
|
|
struct t10_alua_lu_gp *lu_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group;
|
|
unsigned long lu_gp_id;
|
|
int ret;
|
|
|
|
ret = strict_strtoul(page, 0, &lu_gp_id);
|
|
if (ret < 0) {
|
|
pr_err("strict_strtoul() returned %d for"
|
|
" lu_gp_id\n", ret);
|
|
return -EINVAL;
|
|
}
|
|
if (lu_gp_id > 0x0000ffff) {
|
|
pr_err("ALUA lu_gp_id: %lu exceeds maximum:"
|
|
" 0x0000ffff\n", lu_gp_id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id);
|
|
if (ret < 0)
|
|
return -EINVAL;
|
|
|
|
pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit"
|
|
" Group: core/alua/lu_gps/%s to ID: %hu\n",
|
|
config_item_name(&alua_lu_gp_cg->cg_item),
|
|
lu_gp->lu_gp_id);
|
|
|
|
return count;
|
|
}
|
|
|
|
SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* members
|
|
*/
|
|
static ssize_t target_core_alua_lu_gp_show_attr_members(
|
|
struct t10_alua_lu_gp *lu_gp,
|
|
char *page)
|
|
{
|
|
struct se_device *dev;
|
|
struct se_hba *hba;
|
|
struct t10_alua_lu_gp_member *lu_gp_mem;
|
|
ssize_t len = 0, cur_len;
|
|
unsigned char buf[LU_GROUP_NAME_BUF];
|
|
|
|
memset(buf, 0, LU_GROUP_NAME_BUF);
|
|
|
|
spin_lock(&lu_gp->lu_gp_lock);
|
|
list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) {
|
|
dev = lu_gp_mem->lu_gp_mem_dev;
|
|
hba = dev->se_hba;
|
|
|
|
cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n",
|
|
config_item_name(&hba->hba_group.cg_item),
|
|
config_item_name(&dev->dev_group.cg_item));
|
|
cur_len++; /* Extra byte for NULL terminator */
|
|
|
|
if ((cur_len + len) > PAGE_SIZE) {
|
|
pr_warn("Ran out of lu_gp_show_attr"
|
|
"_members buffer\n");
|
|
break;
|
|
}
|
|
memcpy(page+len, buf, cur_len);
|
|
len += cur_len;
|
|
}
|
|
spin_unlock(&lu_gp->lu_gp_lock);
|
|
|
|
return len;
|
|
}
|
|
|
|
SE_DEV_ALUA_LU_ATTR_RO(members);
|
|
|
|
CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group);
|
|
|
|
static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = {
|
|
&target_core_alua_lu_gp_lu_gp_id.attr,
|
|
&target_core_alua_lu_gp_members.attr,
|
|
NULL,
|
|
};
|
|
|
|
static void target_core_alua_lu_gp_release(struct config_item *item)
|
|
{
|
|
struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
|
|
struct t10_alua_lu_gp, lu_gp_group);
|
|
|
|
core_alua_free_lu_gp(lu_gp);
|
|
}
|
|
|
|
static struct configfs_item_operations target_core_alua_lu_gp_ops = {
|
|
.release = target_core_alua_lu_gp_release,
|
|
.show_attribute = target_core_alua_lu_gp_attr_show,
|
|
.store_attribute = target_core_alua_lu_gp_attr_store,
|
|
};
|
|
|
|
static struct config_item_type target_core_alua_lu_gp_cit = {
|
|
.ct_item_ops = &target_core_alua_lu_gp_ops,
|
|
.ct_attrs = target_core_alua_lu_gp_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_alua_lu_gp_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_alua_lu_gps_cit */
|
|
|
|
static struct config_group *target_core_alua_create_lu_gp(
|
|
struct config_group *group,
|
|
const char *name)
|
|
{
|
|
struct t10_alua_lu_gp *lu_gp;
|
|
struct config_group *alua_lu_gp_cg = NULL;
|
|
struct config_item *alua_lu_gp_ci = NULL;
|
|
|
|
lu_gp = core_alua_allocate_lu_gp(name, 0);
|
|
if (IS_ERR(lu_gp))
|
|
return NULL;
|
|
|
|
alua_lu_gp_cg = &lu_gp->lu_gp_group;
|
|
alua_lu_gp_ci = &alua_lu_gp_cg->cg_item;
|
|
|
|
config_group_init_type_name(alua_lu_gp_cg, name,
|
|
&target_core_alua_lu_gp_cit);
|
|
|
|
pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit"
|
|
" Group: core/alua/lu_gps/%s\n",
|
|
config_item_name(alua_lu_gp_ci));
|
|
|
|
return alua_lu_gp_cg;
|
|
|
|
}
|
|
|
|
static void target_core_alua_drop_lu_gp(
|
|
struct config_group *group,
|
|
struct config_item *item)
|
|
{
|
|
struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
|
|
struct t10_alua_lu_gp, lu_gp_group);
|
|
|
|
pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit"
|
|
" Group: core/alua/lu_gps/%s, ID: %hu\n",
|
|
config_item_name(item), lu_gp->lu_gp_id);
|
|
/*
|
|
* core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release()
|
|
* -> target_core_alua_lu_gp_release()
|
|
*/
|
|
config_item_put(item);
|
|
}
|
|
|
|
static struct configfs_group_operations target_core_alua_lu_gps_group_ops = {
|
|
.make_group = &target_core_alua_create_lu_gp,
|
|
.drop_item = &target_core_alua_drop_lu_gp,
|
|
};
|
|
|
|
static struct config_item_type target_core_alua_lu_gps_cit = {
|
|
.ct_item_ops = NULL,
|
|
.ct_group_ops = &target_core_alua_lu_gps_group_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_alua_lu_gps_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */
|
|
|
|
CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp);
|
|
#define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \
|
|
static struct target_core_alua_tg_pt_gp_attribute \
|
|
target_core_alua_tg_pt_gp_##_name = \
|
|
__CONFIGFS_EATTR(_name, _mode, \
|
|
target_core_alua_tg_pt_gp_show_attr_##_name, \
|
|
target_core_alua_tg_pt_gp_store_attr_##_name);
|
|
|
|
#define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \
|
|
static struct target_core_alua_tg_pt_gp_attribute \
|
|
target_core_alua_tg_pt_gp_##_name = \
|
|
__CONFIGFS_EATTR_RO(_name, \
|
|
target_core_alua_tg_pt_gp_show_attr_##_name);
|
|
|
|
/*
|
|
* alua_access_state
|
|
*/
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "%d\n",
|
|
atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state));
|
|
}
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
|
|
unsigned long tmp;
|
|
int new_state, ret;
|
|
|
|
if (!tg_pt_gp->tg_pt_gp_valid_id) {
|
|
pr_err("Unable to do implict ALUA 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 ALUA access state from"
|
|
" %s\n", page);
|
|
return -EINVAL;
|
|
}
|
|
new_state = (int)tmp;
|
|
|
|
if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) {
|
|
pr_err("Unable to process implict configfs ALUA"
|
|
" transition while TPGS_IMPLICT_ALUA is disabled\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = core_alua_do_port_transition(tg_pt_gp, dev,
|
|
NULL, NULL, new_state, 0);
|
|
return (!ret) ? count : -EINVAL;
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* alua_access_status
|
|
*/
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "%s\n",
|
|
core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status));
|
|
}
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
unsigned long tmp;
|
|
int new_status, ret;
|
|
|
|
if (!tg_pt_gp->tg_pt_gp_valid_id) {
|
|
pr_err("Unable to do set ALUA access status 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 ALUA access status"
|
|
" from %s\n", page);
|
|
return -EINVAL;
|
|
}
|
|
new_status = (int)tmp;
|
|
|
|
if ((new_status != ALUA_STATUS_NONE) &&
|
|
(new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) &&
|
|
(new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) {
|
|
pr_err("Illegal ALUA access status: 0x%02x\n",
|
|
new_status);
|
|
return -EINVAL;
|
|
}
|
|
|
|
tg_pt_gp->tg_pt_gp_alua_access_status = new_status;
|
|
return count;
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* alua_access_type
|
|
*/
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
return core_alua_show_access_type(tg_pt_gp, page);
|
|
}
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
return core_alua_store_access_type(tg_pt_gp, page, count);
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* alua_write_metadata
|
|
*/
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata);
|
|
}
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
unsigned long tmp;
|
|
int ret;
|
|
|
|
ret = strict_strtoul(page, 0, &tmp);
|
|
if (ret < 0) {
|
|
pr_err("Unable to extract alua_write_metadata\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((tmp != 0) && (tmp != 1)) {
|
|
pr_err("Illegal value for alua_write_metadata:"
|
|
" %lu\n", tmp);
|
|
return -EINVAL;
|
|
}
|
|
tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp;
|
|
|
|
return count;
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR);
|
|
|
|
|
|
|
|
/*
|
|
* nonop_delay_msecs
|
|
*/
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
return core_alua_show_nonop_delay_msecs(tg_pt_gp, page);
|
|
|
|
}
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count);
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* trans_delay_msecs
|
|
*/
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
return core_alua_show_trans_delay_msecs(tg_pt_gp, page);
|
|
}
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count);
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* implict_trans_secs
|
|
*/
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_implict_trans_secs(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
return core_alua_show_implict_trans_secs(tg_pt_gp, page);
|
|
}
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_store_attr_implict_trans_secs(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
return core_alua_store_implict_trans_secs(tg_pt_gp, page, count);
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR(implict_trans_secs, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* preferred
|
|
*/
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
return core_alua_show_preferred_bit(tg_pt_gp, page);
|
|
}
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
return core_alua_store_preferred_bit(tg_pt_gp, page, count);
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* tg_pt_gp_id
|
|
*/
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
if (!tg_pt_gp->tg_pt_gp_valid_id)
|
|
return 0;
|
|
|
|
return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id);
|
|
}
|
|
|
|
static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
const char *page,
|
|
size_t count)
|
|
{
|
|
struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
|
|
unsigned long tg_pt_gp_id;
|
|
int ret;
|
|
|
|
ret = strict_strtoul(page, 0, &tg_pt_gp_id);
|
|
if (ret < 0) {
|
|
pr_err("strict_strtoul() returned %d for"
|
|
" tg_pt_gp_id\n", ret);
|
|
return -EINVAL;
|
|
}
|
|
if (tg_pt_gp_id > 0x0000ffff) {
|
|
pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:"
|
|
" 0x0000ffff\n", tg_pt_gp_id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id);
|
|
if (ret < 0)
|
|
return -EINVAL;
|
|
|
|
pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: "
|
|
"core/alua/tg_pt_gps/%s to ID: %hu\n",
|
|
config_item_name(&alua_tg_pt_gp_cg->cg_item),
|
|
tg_pt_gp->tg_pt_gp_id);
|
|
|
|
return count;
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR);
|
|
|
|
/*
|
|
* members
|
|
*/
|
|
static ssize_t target_core_alua_tg_pt_gp_show_attr_members(
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp,
|
|
char *page)
|
|
{
|
|
struct se_port *port;
|
|
struct se_portal_group *tpg;
|
|
struct se_lun *lun;
|
|
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
|
|
ssize_t len = 0, cur_len;
|
|
unsigned char buf[TG_PT_GROUP_NAME_BUF];
|
|
|
|
memset(buf, 0, TG_PT_GROUP_NAME_BUF);
|
|
|
|
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
|
|
list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list,
|
|
tg_pt_gp_mem_list) {
|
|
port = tg_pt_gp_mem->tg_pt;
|
|
tpg = port->sep_tpg;
|
|
lun = port->sep_lun;
|
|
|
|
cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu"
|
|
"/%s\n", tpg->se_tpg_tfo->get_fabric_name(),
|
|
tpg->se_tpg_tfo->tpg_get_wwn(tpg),
|
|
tpg->se_tpg_tfo->tpg_get_tag(tpg),
|
|
config_item_name(&lun->lun_group.cg_item));
|
|
cur_len++; /* Extra byte for NULL terminator */
|
|
|
|
if ((cur_len + len) > PAGE_SIZE) {
|
|
pr_warn("Ran out of lu_gp_show_attr"
|
|
"_members buffer\n");
|
|
break;
|
|
}
|
|
memcpy(page+len, buf, cur_len);
|
|
len += cur_len;
|
|
}
|
|
spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
|
|
|
|
return len;
|
|
}
|
|
|
|
SE_DEV_ALUA_TG_PT_ATTR_RO(members);
|
|
|
|
CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp,
|
|
tg_pt_gp_group);
|
|
|
|
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_write_metadata.attr,
|
|
&target_core_alua_tg_pt_gp_nonop_delay_msecs.attr,
|
|
&target_core_alua_tg_pt_gp_trans_delay_msecs.attr,
|
|
&target_core_alua_tg_pt_gp_implict_trans_secs.attr,
|
|
&target_core_alua_tg_pt_gp_preferred.attr,
|
|
&target_core_alua_tg_pt_gp_tg_pt_gp_id.attr,
|
|
&target_core_alua_tg_pt_gp_members.attr,
|
|
NULL,
|
|
};
|
|
|
|
static void target_core_alua_tg_pt_gp_release(struct config_item *item)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
|
|
struct t10_alua_tg_pt_gp, tg_pt_gp_group);
|
|
|
|
core_alua_free_tg_pt_gp(tg_pt_gp);
|
|
}
|
|
|
|
static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = {
|
|
.release = target_core_alua_tg_pt_gp_release,
|
|
.show_attribute = target_core_alua_tg_pt_gp_attr_show,
|
|
.store_attribute = target_core_alua_tg_pt_gp_attr_store,
|
|
};
|
|
|
|
static struct config_item_type target_core_alua_tg_pt_gp_cit = {
|
|
.ct_item_ops = &target_core_alua_tg_pt_gp_ops,
|
|
.ct_attrs = target_core_alua_tg_pt_gp_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */
|
|
|
|
static struct config_group *target_core_alua_create_tg_pt_gp(
|
|
struct config_group *group,
|
|
const char *name)
|
|
{
|
|
struct t10_alua *alua = container_of(group, struct t10_alua,
|
|
alua_tg_pt_gps_group);
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp;
|
|
struct config_group *alua_tg_pt_gp_cg = NULL;
|
|
struct config_item *alua_tg_pt_gp_ci = NULL;
|
|
|
|
tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0);
|
|
if (!tg_pt_gp)
|
|
return NULL;
|
|
|
|
alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
|
|
alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item;
|
|
|
|
config_group_init_type_name(alua_tg_pt_gp_cg, name,
|
|
&target_core_alua_tg_pt_gp_cit);
|
|
|
|
pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port"
|
|
" Group: alua/tg_pt_gps/%s\n",
|
|
config_item_name(alua_tg_pt_gp_ci));
|
|
|
|
return alua_tg_pt_gp_cg;
|
|
}
|
|
|
|
static void target_core_alua_drop_tg_pt_gp(
|
|
struct config_group *group,
|
|
struct config_item *item)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
|
|
struct t10_alua_tg_pt_gp, tg_pt_gp_group);
|
|
|
|
pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port"
|
|
" Group: alua/tg_pt_gps/%s, ID: %hu\n",
|
|
config_item_name(item), tg_pt_gp->tg_pt_gp_id);
|
|
/*
|
|
* core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release()
|
|
* -> target_core_alua_tg_pt_gp_release().
|
|
*/
|
|
config_item_put(item);
|
|
}
|
|
|
|
static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = {
|
|
.make_group = &target_core_alua_create_tg_pt_gp,
|
|
.drop_item = &target_core_alua_drop_tg_pt_gp,
|
|
};
|
|
|
|
static struct config_item_type target_core_alua_tg_pt_gps_cit = {
|
|
.ct_group_ops = &target_core_alua_tg_pt_gps_group_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_alua_cit */
|
|
|
|
/*
|
|
* target_core_alua_cit is a ConfigFS group that lives under
|
|
* /sys/kernel/config/target/core/alua. There are default groups
|
|
* core/alua/lu_gps and core/alua/tg_pt_gps that are attached to
|
|
* target_core_alua_cit in target_core_init_configfs() below.
|
|
*/
|
|
static struct config_item_type target_core_alua_cit = {
|
|
.ct_item_ops = NULL,
|
|
.ct_attrs = NULL,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_alua_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_stat_cit */
|
|
|
|
static struct config_group *target_core_stat_mkdir(
|
|
struct config_group *group,
|
|
const char *name)
|
|
{
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
|
|
static void target_core_stat_rmdir(
|
|
struct config_group *group,
|
|
struct config_item *item)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static struct configfs_group_operations target_core_stat_group_ops = {
|
|
.make_group = &target_core_stat_mkdir,
|
|
.drop_item = &target_core_stat_rmdir,
|
|
};
|
|
|
|
static struct config_item_type target_core_stat_cit = {
|
|
.ct_group_ops = &target_core_stat_group_ops,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* End functions for struct config_item_type target_core_stat_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_hba_cit */
|
|
|
|
static struct config_group *target_core_make_subdev(
|
|
struct config_group *group,
|
|
const char *name)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp;
|
|
struct se_subsystem_api *t;
|
|
struct config_item *hba_ci = &group->cg_item;
|
|
struct se_hba *hba = item_to_hba(hba_ci);
|
|
struct se_device *dev;
|
|
struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL;
|
|
struct config_group *dev_stat_grp = NULL;
|
|
int errno = -ENOMEM, ret;
|
|
|
|
ret = mutex_lock_interruptible(&hba->hba_access_mutex);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
/*
|
|
* Locate the struct se_subsystem_api from parent's struct se_hba.
|
|
*/
|
|
t = hba->transport;
|
|
|
|
dev = target_alloc_device(hba, name);
|
|
if (!dev)
|
|
goto out_unlock;
|
|
|
|
dev_cg = &dev->dev_group;
|
|
|
|
dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
|
|
GFP_KERNEL);
|
|
if (!dev_cg->default_groups)
|
|
goto out_free_device;
|
|
|
|
config_group_init_type_name(dev_cg, name, &target_core_dev_cit);
|
|
config_group_init_type_name(&dev->dev_attrib.da_group, "attrib",
|
|
&target_core_dev_attrib_cit);
|
|
config_group_init_type_name(&dev->dev_pr_group, "pr",
|
|
&target_core_dev_pr_cit);
|
|
config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn",
|
|
&target_core_dev_wwn_cit);
|
|
config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group,
|
|
"alua", &target_core_alua_tg_pt_gps_cit);
|
|
config_group_init_type_name(&dev->dev_stat_grps.stat_group,
|
|
"statistics", &target_core_stat_cit);
|
|
|
|
dev_cg->default_groups[0] = &dev->dev_attrib.da_group;
|
|
dev_cg->default_groups[1] = &dev->dev_pr_group;
|
|
dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group;
|
|
dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group;
|
|
dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group;
|
|
dev_cg->default_groups[5] = NULL;
|
|
/*
|
|
* Add core/$HBA/$DEV/alua/default_tg_pt_gp
|
|
*/
|
|
tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1);
|
|
if (!tg_pt_gp)
|
|
goto out_free_dev_cg_default_groups;
|
|
dev->t10_alua.default_tg_pt_gp = tg_pt_gp;
|
|
|
|
tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group;
|
|
tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
|
|
GFP_KERNEL);
|
|
if (!tg_pt_gp_cg->default_groups) {
|
|
pr_err("Unable to allocate tg_pt_gp_cg->"
|
|
"default_groups\n");
|
|
goto out_free_tg_pt_gp;
|
|
}
|
|
|
|
config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group,
|
|
"default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit);
|
|
tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group;
|
|
tg_pt_gp_cg->default_groups[1] = NULL;
|
|
/*
|
|
* Add core/$HBA/$DEV/statistics/ default groups
|
|
*/
|
|
dev_stat_grp = &dev->dev_stat_grps.stat_group;
|
|
dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4,
|
|
GFP_KERNEL);
|
|
if (!dev_stat_grp->default_groups) {
|
|
pr_err("Unable to allocate dev_stat_grp->default_groups\n");
|
|
goto out_free_tg_pt_gp_cg_default_groups;
|
|
}
|
|
target_stat_setup_dev_default_groups(dev);
|
|
|
|
mutex_unlock(&hba->hba_access_mutex);
|
|
return dev_cg;
|
|
|
|
out_free_tg_pt_gp_cg_default_groups:
|
|
kfree(tg_pt_gp_cg->default_groups);
|
|
out_free_tg_pt_gp:
|
|
core_alua_free_tg_pt_gp(tg_pt_gp);
|
|
out_free_dev_cg_default_groups:
|
|
kfree(dev_cg->default_groups);
|
|
out_free_device:
|
|
target_free_device(dev);
|
|
out_unlock:
|
|
mutex_unlock(&hba->hba_access_mutex);
|
|
return ERR_PTR(errno);
|
|
}
|
|
|
|
static void target_core_drop_subdev(
|
|
struct config_group *group,
|
|
struct config_item *item)
|
|
{
|
|
struct config_group *dev_cg = to_config_group(item);
|
|
struct se_device *dev =
|
|
container_of(dev_cg, struct se_device, dev_group);
|
|
struct se_hba *hba;
|
|
struct config_item *df_item;
|
|
struct config_group *tg_pt_gp_cg, *dev_stat_grp;
|
|
int i;
|
|
|
|
hba = item_to_hba(&dev->se_hba->hba_group.cg_item);
|
|
|
|
mutex_lock(&hba->hba_access_mutex);
|
|
|
|
dev_stat_grp = &dev->dev_stat_grps.stat_group;
|
|
for (i = 0; dev_stat_grp->default_groups[i]; i++) {
|
|
df_item = &dev_stat_grp->default_groups[i]->cg_item;
|
|
dev_stat_grp->default_groups[i] = NULL;
|
|
config_item_put(df_item);
|
|
}
|
|
kfree(dev_stat_grp->default_groups);
|
|
|
|
tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group;
|
|
for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) {
|
|
df_item = &tg_pt_gp_cg->default_groups[i]->cg_item;
|
|
tg_pt_gp_cg->default_groups[i] = NULL;
|
|
config_item_put(df_item);
|
|
}
|
|
kfree(tg_pt_gp_cg->default_groups);
|
|
/*
|
|
* core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp
|
|
* directly from target_core_alua_tg_pt_gp_release().
|
|
*/
|
|
dev->t10_alua.default_tg_pt_gp = NULL;
|
|
|
|
for (i = 0; dev_cg->default_groups[i]; i++) {
|
|
df_item = &dev_cg->default_groups[i]->cg_item;
|
|
dev_cg->default_groups[i] = NULL;
|
|
config_item_put(df_item);
|
|
}
|
|
/*
|
|
* se_dev is released from target_core_dev_item_ops->release()
|
|
*/
|
|
config_item_put(item);
|
|
mutex_unlock(&hba->hba_access_mutex);
|
|
}
|
|
|
|
static struct configfs_group_operations target_core_hba_group_ops = {
|
|
.make_group = target_core_make_subdev,
|
|
.drop_item = target_core_drop_subdev,
|
|
};
|
|
|
|
CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba);
|
|
#define SE_HBA_ATTR(_name, _mode) \
|
|
static struct target_core_hba_attribute \
|
|
target_core_hba_##_name = \
|
|
__CONFIGFS_EATTR(_name, _mode, \
|
|
target_core_hba_show_attr_##_name, \
|
|
target_core_hba_store_attr_##_name);
|
|
|
|
#define SE_HBA_ATTR_RO(_name) \
|
|
static struct target_core_hba_attribute \
|
|
target_core_hba_##_name = \
|
|
__CONFIGFS_EATTR_RO(_name, \
|
|
target_core_hba_show_attr_##_name);
|
|
|
|
static ssize_t target_core_hba_show_attr_hba_info(
|
|
struct se_hba *hba,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "HBA Index: %d plugin: %s version: %s\n",
|
|
hba->hba_id, hba->transport->name,
|
|
TARGET_CORE_CONFIGFS_VERSION);
|
|
}
|
|
|
|
SE_HBA_ATTR_RO(hba_info);
|
|
|
|
static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba,
|
|
char *page)
|
|
{
|
|
int hba_mode = 0;
|
|
|
|
if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE)
|
|
hba_mode = 1;
|
|
|
|
return sprintf(page, "%d\n", hba_mode);
|
|
}
|
|
|
|
static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_subsystem_api *transport = hba->transport;
|
|
unsigned long mode_flag;
|
|
int ret;
|
|
|
|
if (transport->pmode_enable_hba == NULL)
|
|
return -EINVAL;
|
|
|
|
ret = strict_strtoul(page, 0, &mode_flag);
|
|
if (ret < 0) {
|
|
pr_err("Unable to extract hba mode flag: %d\n", ret);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (hba->dev_count) {
|
|
pr_err("Unable to set hba_mode with active devices\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = transport->pmode_enable_hba(hba, mode_flag);
|
|
if (ret < 0)
|
|
return -EINVAL;
|
|
if (ret > 0)
|
|
hba->hba_flags |= HBA_FLAGS_PSCSI_MODE;
|
|
else if (ret == 0)
|
|
hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE;
|
|
|
|
return count;
|
|
}
|
|
|
|
SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR);
|
|
|
|
CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group);
|
|
|
|
static void target_core_hba_release(struct config_item *item)
|
|
{
|
|
struct se_hba *hba = container_of(to_config_group(item),
|
|
struct se_hba, hba_group);
|
|
core_delete_hba(hba);
|
|
}
|
|
|
|
static struct configfs_attribute *target_core_hba_attrs[] = {
|
|
&target_core_hba_hba_info.attr,
|
|
&target_core_hba_hba_mode.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct configfs_item_operations target_core_hba_item_ops = {
|
|
.release = target_core_hba_release,
|
|
.show_attribute = target_core_hba_attr_show,
|
|
.store_attribute = target_core_hba_attr_store,
|
|
};
|
|
|
|
static struct config_item_type target_core_hba_cit = {
|
|
.ct_item_ops = &target_core_hba_item_ops,
|
|
.ct_group_ops = &target_core_hba_group_ops,
|
|
.ct_attrs = target_core_hba_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct config_group *target_core_call_addhbatotarget(
|
|
struct config_group *group,
|
|
const char *name)
|
|
{
|
|
char *se_plugin_str, *str, *str2;
|
|
struct se_hba *hba;
|
|
char buf[TARGET_CORE_NAME_MAX_LEN];
|
|
unsigned long plugin_dep_id = 0;
|
|
int ret;
|
|
|
|
memset(buf, 0, TARGET_CORE_NAME_MAX_LEN);
|
|
if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) {
|
|
pr_err("Passed *name strlen(): %d exceeds"
|
|
" TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name),
|
|
TARGET_CORE_NAME_MAX_LEN);
|
|
return ERR_PTR(-ENAMETOOLONG);
|
|
}
|
|
snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name);
|
|
|
|
str = strstr(buf, "_");
|
|
if (!str) {
|
|
pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
se_plugin_str = buf;
|
|
/*
|
|
* Special case for subsystem plugins that have "_" in their names.
|
|
* Namely rd_direct and rd_mcp..
|
|
*/
|
|
str2 = strstr(str+1, "_");
|
|
if (str2) {
|
|
*str2 = '\0'; /* Terminate for *se_plugin_str */
|
|
str2++; /* Skip to start of plugin dependent ID */
|
|
str = str2;
|
|
} else {
|
|
*str = '\0'; /* Terminate for *se_plugin_str */
|
|
str++; /* Skip to start of plugin dependent ID */
|
|
}
|
|
|
|
ret = strict_strtoul(str, 0, &plugin_dep_id);
|
|
if (ret < 0) {
|
|
pr_err("strict_strtoul() returned %d for"
|
|
" plugin_dep_id\n", ret);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
/*
|
|
* Load up TCM subsystem plugins if they have not already been loaded.
|
|
*/
|
|
transport_subsystem_check_init();
|
|
|
|
hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0);
|
|
if (IS_ERR(hba))
|
|
return ERR_CAST(hba);
|
|
|
|
config_group_init_type_name(&hba->hba_group, name,
|
|
&target_core_hba_cit);
|
|
|
|
return &hba->hba_group;
|
|
}
|
|
|
|
static void target_core_call_delhbafromtarget(
|
|
struct config_group *group,
|
|
struct config_item *item)
|
|
{
|
|
/*
|
|
* core_delete_hba() is called from target_core_hba_item_ops->release()
|
|
* -> target_core_hba_release()
|
|
*/
|
|
config_item_put(item);
|
|
}
|
|
|
|
static struct configfs_group_operations target_core_group_ops = {
|
|
.make_group = target_core_call_addhbatotarget,
|
|
.drop_item = target_core_call_delhbafromtarget,
|
|
};
|
|
|
|
static struct config_item_type target_core_cit = {
|
|
.ct_item_ops = NULL,
|
|
.ct_group_ops = &target_core_group_ops,
|
|
.ct_attrs = NULL,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
/* Stop functions for struct config_item_type target_core_hba_cit */
|
|
|
|
static int __init target_core_init_configfs(void)
|
|
{
|
|
struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL;
|
|
struct config_group *lu_gp_cg = NULL;
|
|
struct configfs_subsystem *subsys;
|
|
struct t10_alua_lu_gp *lu_gp;
|
|
int ret;
|
|
|
|
pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage"
|
|
" Engine: %s on %s/%s on "UTS_RELEASE"\n",
|
|
TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine);
|
|
|
|
subsys = target_core_subsystem[0];
|
|
config_group_init(&subsys->su_group);
|
|
mutex_init(&subsys->su_mutex);
|
|
|
|
ret = init_se_kmem_caches();
|
|
if (ret < 0)
|
|
return ret;
|
|
/*
|
|
* Create $CONFIGFS/target/core default group for HBA <-> Storage Object
|
|
* and ALUA Logical Unit Group and Target Port Group infrastructure.
|
|
*/
|
|
target_cg = &subsys->su_group;
|
|
target_cg->default_groups = kmalloc(sizeof(struct config_group) * 2,
|
|
GFP_KERNEL);
|
|
if (!target_cg->default_groups) {
|
|
pr_err("Unable to allocate target_cg->default_groups\n");
|
|
ret = -ENOMEM;
|
|
goto out_global;
|
|
}
|
|
|
|
config_group_init_type_name(&target_core_hbagroup,
|
|
"core", &target_core_cit);
|
|
target_cg->default_groups[0] = &target_core_hbagroup;
|
|
target_cg->default_groups[1] = NULL;
|
|
/*
|
|
* Create ALUA infrastructure under /sys/kernel/config/target/core/alua/
|
|
*/
|
|
hba_cg = &target_core_hbagroup;
|
|
hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
|
|
GFP_KERNEL);
|
|
if (!hba_cg->default_groups) {
|
|
pr_err("Unable to allocate hba_cg->default_groups\n");
|
|
ret = -ENOMEM;
|
|
goto out_global;
|
|
}
|
|
config_group_init_type_name(&alua_group,
|
|
"alua", &target_core_alua_cit);
|
|
hba_cg->default_groups[0] = &alua_group;
|
|
hba_cg->default_groups[1] = NULL;
|
|
/*
|
|
* Add ALUA Logical Unit Group and Target Port Group ConfigFS
|
|
* groups under /sys/kernel/config/target/core/alua/
|
|
*/
|
|
alua_cg = &alua_group;
|
|
alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
|
|
GFP_KERNEL);
|
|
if (!alua_cg->default_groups) {
|
|
pr_err("Unable to allocate alua_cg->default_groups\n");
|
|
ret = -ENOMEM;
|
|
goto out_global;
|
|
}
|
|
|
|
config_group_init_type_name(&alua_lu_gps_group,
|
|
"lu_gps", &target_core_alua_lu_gps_cit);
|
|
alua_cg->default_groups[0] = &alua_lu_gps_group;
|
|
alua_cg->default_groups[1] = NULL;
|
|
/*
|
|
* Add core/alua/lu_gps/default_lu_gp
|
|
*/
|
|
lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1);
|
|
if (IS_ERR(lu_gp)) {
|
|
ret = -ENOMEM;
|
|
goto out_global;
|
|
}
|
|
|
|
lu_gp_cg = &alua_lu_gps_group;
|
|
lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
|
|
GFP_KERNEL);
|
|
if (!lu_gp_cg->default_groups) {
|
|
pr_err("Unable to allocate lu_gp_cg->default_groups\n");
|
|
ret = -ENOMEM;
|
|
goto out_global;
|
|
}
|
|
|
|
config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp",
|
|
&target_core_alua_lu_gp_cit);
|
|
lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group;
|
|
lu_gp_cg->default_groups[1] = NULL;
|
|
default_lu_gp = lu_gp;
|
|
/*
|
|
* Register the target_core_mod subsystem with configfs.
|
|
*/
|
|
ret = configfs_register_subsystem(subsys);
|
|
if (ret < 0) {
|
|
pr_err("Error %d while registering subsystem %s\n",
|
|
ret, subsys->su_group.cg_item.ci_namebuf);
|
|
goto out_global;
|
|
}
|
|
pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric"
|
|
" Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s"
|
|
" on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine);
|
|
/*
|
|
* Register built-in RAMDISK subsystem logic for virtual LUN 0
|
|
*/
|
|
ret = rd_module_init();
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = core_dev_setup_virtual_lun0();
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
return 0;
|
|
|
|
out:
|
|
configfs_unregister_subsystem(subsys);
|
|
core_dev_release_virtual_lun0();
|
|
rd_module_exit();
|
|
out_global:
|
|
if (default_lu_gp) {
|
|
core_alua_free_lu_gp(default_lu_gp);
|
|
default_lu_gp = NULL;
|
|
}
|
|
if (lu_gp_cg)
|
|
kfree(lu_gp_cg->default_groups);
|
|
if (alua_cg)
|
|
kfree(alua_cg->default_groups);
|
|
if (hba_cg)
|
|
kfree(hba_cg->default_groups);
|
|
kfree(target_cg->default_groups);
|
|
release_se_kmem_caches();
|
|
return ret;
|
|
}
|
|
|
|
static void __exit target_core_exit_configfs(void)
|
|
{
|
|
struct configfs_subsystem *subsys;
|
|
struct config_group *hba_cg, *alua_cg, *lu_gp_cg;
|
|
struct config_item *item;
|
|
int i;
|
|
|
|
subsys = target_core_subsystem[0];
|
|
|
|
lu_gp_cg = &alua_lu_gps_group;
|
|
for (i = 0; lu_gp_cg->default_groups[i]; i++) {
|
|
item = &lu_gp_cg->default_groups[i]->cg_item;
|
|
lu_gp_cg->default_groups[i] = NULL;
|
|
config_item_put(item);
|
|
}
|
|
kfree(lu_gp_cg->default_groups);
|
|
lu_gp_cg->default_groups = NULL;
|
|
|
|
alua_cg = &alua_group;
|
|
for (i = 0; alua_cg->default_groups[i]; i++) {
|
|
item = &alua_cg->default_groups[i]->cg_item;
|
|
alua_cg->default_groups[i] = NULL;
|
|
config_item_put(item);
|
|
}
|
|
kfree(alua_cg->default_groups);
|
|
alua_cg->default_groups = NULL;
|
|
|
|
hba_cg = &target_core_hbagroup;
|
|
for (i = 0; hba_cg->default_groups[i]; i++) {
|
|
item = &hba_cg->default_groups[i]->cg_item;
|
|
hba_cg->default_groups[i] = NULL;
|
|
config_item_put(item);
|
|
}
|
|
kfree(hba_cg->default_groups);
|
|
hba_cg->default_groups = NULL;
|
|
/*
|
|
* We expect subsys->su_group.default_groups to be released
|
|
* by configfs subsystem provider logic..
|
|
*/
|
|
configfs_unregister_subsystem(subsys);
|
|
kfree(subsys->su_group.default_groups);
|
|
|
|
core_alua_free_lu_gp(default_lu_gp);
|
|
default_lu_gp = NULL;
|
|
|
|
pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric"
|
|
" Infrastructure\n");
|
|
|
|
core_dev_release_virtual_lun0();
|
|
rd_module_exit();
|
|
release_se_kmem_caches();
|
|
}
|
|
|
|
MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS");
|
|
MODULE_AUTHOR("nab@Linux-iSCSI.org");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(target_core_init_configfs);
|
|
module_exit(target_core_exit_configfs);
|