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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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![Martin K. Petersen](/assets/img/avatar_default.png)
Merge the 5.15/scsi-fixes branch into the staging tree to resolve UFS conflict reported by sfr. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
3692 lines
98 KiB
C
3692 lines
98 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*******************************************************************************
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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 2008-2013 Datera, Inc.
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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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****************************************************************************/
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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_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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#include "target_core_xcopy.h"
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#define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
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static void target_core_setup_##_name##_cit(struct target_backend *tb) \
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{ \
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struct config_item_type *cit = &tb->tb_##_name##_cit; \
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\
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cit->ct_item_ops = _item_ops; \
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cit->ct_group_ops = _group_ops; \
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cit->ct_attrs = _attrs; \
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cit->ct_owner = tb->ops->owner; \
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pr_debug("Setup generic %s\n", __stringify(_name)); \
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}
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#define TB_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \
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static void target_core_setup_##_name##_cit(struct target_backend *tb) \
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{ \
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struct config_item_type *cit = &tb->tb_##_name##_cit; \
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\
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cit->ct_item_ops = _item_ops; \
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cit->ct_group_ops = _group_ops; \
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cit->ct_attrs = tb->ops->tb_##_name##_attrs; \
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cit->ct_owner = tb->ops->owner; \
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pr_debug("Setup generic %s\n", __stringify(_name)); \
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}
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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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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_item_version_show(struct config_item *item,
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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_VERSION,
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utsname()->sysname, utsname()->machine);
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}
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CONFIGFS_ATTR_RO(target_core_item_, version);
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char db_root[DB_ROOT_LEN] = DB_ROOT_DEFAULT;
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static char db_root_stage[DB_ROOT_LEN];
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static ssize_t target_core_item_dbroot_show(struct config_item *item,
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char *page)
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{
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return sprintf(page, "%s\n", db_root);
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}
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static ssize_t target_core_item_dbroot_store(struct config_item *item,
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const char *page, size_t count)
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{
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ssize_t read_bytes;
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struct file *fp;
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mutex_lock(&g_tf_lock);
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if (!list_empty(&g_tf_list)) {
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mutex_unlock(&g_tf_lock);
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pr_err("db_root: cannot be changed: target drivers registered");
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return -EINVAL;
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}
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if (count > (DB_ROOT_LEN - 1)) {
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mutex_unlock(&g_tf_lock);
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pr_err("db_root: count %d exceeds DB_ROOT_LEN-1: %u\n",
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(int)count, DB_ROOT_LEN - 1);
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return -EINVAL;
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}
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read_bytes = snprintf(db_root_stage, DB_ROOT_LEN, "%s", page);
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if (!read_bytes) {
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mutex_unlock(&g_tf_lock);
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return -EINVAL;
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}
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if (db_root_stage[read_bytes - 1] == '\n')
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db_root_stage[read_bytes - 1] = '\0';
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/* validate new db root before accepting it */
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fp = filp_open(db_root_stage, O_RDONLY, 0);
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if (IS_ERR(fp)) {
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mutex_unlock(&g_tf_lock);
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pr_err("db_root: cannot open: %s\n", db_root_stage);
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return -EINVAL;
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}
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if (!S_ISDIR(file_inode(fp)->i_mode)) {
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filp_close(fp, NULL);
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mutex_unlock(&g_tf_lock);
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pr_err("db_root: not a directory: %s\n", db_root_stage);
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return -EINVAL;
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}
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filp_close(fp, NULL);
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strncpy(db_root, db_root_stage, read_bytes);
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mutex_unlock(&g_tf_lock);
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pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root);
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return read_bytes;
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}
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CONFIGFS_ATTR(target_core_item_, dbroot);
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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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const char *cmp_name = tf->tf_ops->fabric_alias;
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if (!cmp_name)
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cmp_name = tf->tf_ops->fabric_name;
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if (!strcmp(cmp_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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tf = target_core_get_fabric(name);
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if (!tf) {
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pr_debug("target_core_register_fabric() trying autoload for %s\n",
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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_debug("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_debug("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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}
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if (!tf) {
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pr_debug("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_ops->fabric_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->tf_wwn_cit);
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config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit);
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config_group_init_type_name(&tf->tf_disc_group, "discovery_auth",
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&tf->tf_discovery_cit);
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configfs_add_default_group(&tf->tf_disc_group, &tf->tf_group);
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pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric: %s\n",
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config_item_name(&tf->tf_group.cg_item));
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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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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_ops->fabric_name);
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atomic_dec(&tf->tf_access_cnt);
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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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configfs_remove_default_groups(&tf->tf_group);
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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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&target_core_item_attr_dbroot,
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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 const struct config_item_type target_core_fabrics_item = {
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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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int target_depend_item(struct config_item *item)
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{
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return configfs_depend_item(&target_core_fabrics, item);
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}
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EXPORT_SYMBOL(target_depend_item);
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void target_undepend_item(struct config_item *item)
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{
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return configfs_undepend_item(item);
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}
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EXPORT_SYMBOL(target_undepend_item);
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/*##############################################################################
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// Start functions called by external Target Fabrics Modules
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//############################################################################*/
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static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo)
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{
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if (tfo->fabric_alias) {
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if (strlen(tfo->fabric_alias) >= TARGET_FABRIC_NAME_SIZE) {
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pr_err("Passed alias: %s exceeds "
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"TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_alias);
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return -EINVAL;
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}
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}
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if (!tfo->fabric_name) {
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pr_err("Missing tfo->fabric_name\n");
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return -EINVAL;
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}
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if (strlen(tfo->fabric_name) >= TARGET_FABRIC_NAME_SIZE) {
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pr_err("Passed name: %s exceeds "
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"TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_name);
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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_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_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->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->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_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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if (!tfo->aborted_task) {
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pr_err("Missing tfo->aborted_task()\n");
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return -EINVAL;
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}
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if (!tfo->check_stop_free) {
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pr_err("Missing tfo->check_stop_free()\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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int target_register_template(const struct target_core_fabric_ops *fo)
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{
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struct target_fabric_configfs *tf;
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int ret;
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ret = target_fabric_tf_ops_check(fo);
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if (ret)
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return ret;
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tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL);
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if (!tf) {
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pr_err("%s: could not allocate memory!\n", __func__);
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return -ENOMEM;
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}
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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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tf->tf_ops = fo;
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target_fabric_setup_cits(tf);
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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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return 0;
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}
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EXPORT_SYMBOL(target_register_template);
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void target_unregister_template(const struct target_core_fabric_ops *fo)
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{
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struct target_fabric_configfs *t;
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mutex_lock(&g_tf_lock);
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list_for_each_entry(t, &g_tf_list, tf_list) {
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if (!strcmp(t->tf_ops->fabric_name, fo->fabric_name)) {
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BUG_ON(atomic_read(&t->tf_access_cnt));
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list_del(&t->tf_list);
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mutex_unlock(&g_tf_lock);
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/*
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* Wait for any outstanding fabric se_deve_entry->rcu_head
|
|
* callbacks to complete post kfree_rcu(), before allowing
|
|
* fabric driver unload of TFO->module to proceed.
|
|
*/
|
|
rcu_barrier();
|
|
kfree(t->tf_tpg_base_cit.ct_attrs);
|
|
kfree(t);
|
|
return;
|
|
}
|
|
}
|
|
mutex_unlock(&g_tf_lock);
|
|
}
|
|
EXPORT_SYMBOL(target_unregister_template);
|
|
|
|
/*##############################################################################
|
|
// Stop functions called by external Target Fabrics Modules
|
|
//############################################################################*/
|
|
|
|
static inline struct se_dev_attrib *to_attrib(struct config_item *item)
|
|
{
|
|
return container_of(to_config_group(item), struct se_dev_attrib,
|
|
da_group);
|
|
}
|
|
|
|
/* Start functions for struct config_item_type tb_dev_attrib_cit */
|
|
#define DEF_CONFIGFS_ATTRIB_SHOW(_name) \
|
|
static ssize_t _name##_show(struct config_item *item, char *page) \
|
|
{ \
|
|
return snprintf(page, PAGE_SIZE, "%u\n", to_attrib(item)->_name); \
|
|
}
|
|
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_model_alias);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_dpo);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_write);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_read);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_write_cache);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_ua_intlck_ctrl);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_tas);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpu);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpws);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_caw);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_3pc);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_pr);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_type);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(hw_pi_prot_type);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_verify);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(enforce_pr_isids);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(is_nonrot);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(emulate_rest_reord);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(force_pr_aptpl);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(hw_block_size);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(block_size);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(hw_max_sectors);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(optimal_sectors);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(hw_queue_depth);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(queue_depth);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_lba_count);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_block_desc_count);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity_alignment);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data);
|
|
DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len);
|
|
|
|
#define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \
|
|
static ssize_t _name##_store(struct config_item *item, const char *page,\
|
|
size_t count) \
|
|
{ \
|
|
struct se_dev_attrib *da = to_attrib(item); \
|
|
u32 val; \
|
|
int ret; \
|
|
\
|
|
ret = kstrtou32(page, 0, &val); \
|
|
if (ret < 0) \
|
|
return ret; \
|
|
da->_name = val; \
|
|
return count; \
|
|
}
|
|
|
|
DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_lba_count);
|
|
DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_block_desc_count);
|
|
DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity);
|
|
DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity_alignment);
|
|
DEF_CONFIGFS_ATTRIB_STORE_U32(max_write_same_len);
|
|
|
|
#define DEF_CONFIGFS_ATTRIB_STORE_BOOL(_name) \
|
|
static ssize_t _name##_store(struct config_item *item, const char *page, \
|
|
size_t count) \
|
|
{ \
|
|
struct se_dev_attrib *da = to_attrib(item); \
|
|
bool flag; \
|
|
int ret; \
|
|
\
|
|
ret = strtobool(page, &flag); \
|
|
if (ret < 0) \
|
|
return ret; \
|
|
da->_name = flag; \
|
|
return count; \
|
|
}
|
|
|
|
DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_fua_write);
|
|
DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_caw);
|
|
DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_3pc);
|
|
DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_pr);
|
|
DEF_CONFIGFS_ATTRIB_STORE_BOOL(enforce_pr_isids);
|
|
DEF_CONFIGFS_ATTRIB_STORE_BOOL(is_nonrot);
|
|
|
|
#define DEF_CONFIGFS_ATTRIB_STORE_STUB(_name) \
|
|
static ssize_t _name##_store(struct config_item *item, const char *page,\
|
|
size_t count) \
|
|
{ \
|
|
printk_once(KERN_WARNING \
|
|
"ignoring deprecated %s attribute\n", \
|
|
__stringify(_name)); \
|
|
return count; \
|
|
}
|
|
|
|
DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_dpo);
|
|
DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_fua_read);
|
|
|
|
static void dev_set_t10_wwn_model_alias(struct se_device *dev)
|
|
{
|
|
const char *configname;
|
|
|
|
configname = config_item_name(&dev->dev_group.cg_item);
|
|
if (strlen(configname) >= INQUIRY_MODEL_LEN) {
|
|
pr_warn("dev[%p]: Backstore name '%s' is too long for "
|
|
"INQUIRY_MODEL, truncating to 15 characters\n", dev,
|
|
configname);
|
|
}
|
|
/*
|
|
* XXX We can't use sizeof(dev->t10_wwn.model) (INQUIRY_MODEL_LEN + 1)
|
|
* here without potentially breaking existing setups, so continue to
|
|
* truncate one byte shorter than what can be carried in INQUIRY.
|
|
*/
|
|
strlcpy(dev->t10_wwn.model, configname, INQUIRY_MODEL_LEN);
|
|
}
|
|
|
|
static ssize_t emulate_model_alias_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
struct se_device *dev = da->da_dev;
|
|
bool flag;
|
|
int ret;
|
|
|
|
if (dev->export_count) {
|
|
pr_err("dev[%p]: Unable to change model alias"
|
|
" while export_count is %d\n",
|
|
dev, dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1);
|
|
if (flag) {
|
|
dev_set_t10_wwn_model_alias(dev);
|
|
} else {
|
|
strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod,
|
|
sizeof(dev->t10_wwn.model));
|
|
}
|
|
da->emulate_model_alias = flag;
|
|
return count;
|
|
}
|
|
|
|
static ssize_t emulate_write_cache_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
bool flag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (flag && da->da_dev->transport->get_write_cache) {
|
|
pr_err("emulate_write_cache not supported for this device\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
da->emulate_write_cache = flag;
|
|
pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n",
|
|
da->da_dev, flag);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t emulate_ua_intlck_ctrl_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
u32 val;
|
|
int ret;
|
|
|
|
ret = kstrtou32(page, 0, &val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (val != TARGET_UA_INTLCK_CTRL_CLEAR
|
|
&& val != TARGET_UA_INTLCK_CTRL_NO_CLEAR
|
|
&& val != TARGET_UA_INTLCK_CTRL_ESTABLISH_UA) {
|
|
pr_err("Illegal value %d\n", val);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (da->da_dev->export_count) {
|
|
pr_err("dev[%p]: Unable to change SE Device"
|
|
" UA_INTRLCK_CTRL while export_count is %d\n",
|
|
da->da_dev, da->da_dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
da->emulate_ua_intlck_ctrl = val;
|
|
pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n",
|
|
da->da_dev, val);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t emulate_tas_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
bool flag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (da->da_dev->export_count) {
|
|
pr_err("dev[%p]: Unable to change SE Device TAS while"
|
|
" export_count is %d\n",
|
|
da->da_dev, da->da_dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
da->emulate_tas = flag;
|
|
pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n",
|
|
da->da_dev, flag ? "Enabled" : "Disabled");
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t emulate_tpu_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
bool flag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/*
|
|
* We expect this value to be non-zero when generic Block Layer
|
|
* Discard supported is detected iblock_create_virtdevice().
|
|
*/
|
|
if (flag && !da->max_unmap_block_desc_count) {
|
|
pr_err("Generic Block Discard not supported\n");
|
|
return -ENOSYS;
|
|
}
|
|
|
|
da->emulate_tpu = flag;
|
|
pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n",
|
|
da->da_dev, flag);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t emulate_tpws_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
bool flag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/*
|
|
* We expect this value to be non-zero when generic Block Layer
|
|
* Discard supported is detected iblock_create_virtdevice().
|
|
*/
|
|
if (flag && !da->max_unmap_block_desc_count) {
|
|
pr_err("Generic Block Discard not supported\n");
|
|
return -ENOSYS;
|
|
}
|
|
|
|
da->emulate_tpws = flag;
|
|
pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n",
|
|
da->da_dev, flag);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t pi_prot_type_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
int old_prot = da->pi_prot_type, ret;
|
|
struct se_device *dev = da->da_dev;
|
|
u32 flag;
|
|
|
|
ret = kstrtou32(page, 0, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (flag != 0 && flag != 1 && flag != 2 && flag != 3) {
|
|
pr_err("Illegal value %d for pi_prot_type\n", flag);
|
|
return -EINVAL;
|
|
}
|
|
if (flag == 2) {
|
|
pr_err("DIF TYPE2 protection currently not supported\n");
|
|
return -ENOSYS;
|
|
}
|
|
if (da->hw_pi_prot_type) {
|
|
pr_warn("DIF protection enabled on underlying hardware,"
|
|
" ignoring\n");
|
|
return count;
|
|
}
|
|
if (!dev->transport->init_prot || !dev->transport->free_prot) {
|
|
/* 0 is only allowed value for non-supporting backends */
|
|
if (flag == 0)
|
|
return count;
|
|
|
|
pr_err("DIF protection not supported by backend: %s\n",
|
|
dev->transport->name);
|
|
return -ENOSYS;
|
|
}
|
|
if (!target_dev_configured(dev)) {
|
|
pr_err("DIF protection requires device to be configured\n");
|
|
return -ENODEV;
|
|
}
|
|
if (dev->export_count) {
|
|
pr_err("dev[%p]: Unable to change SE Device PROT type while"
|
|
" export_count is %d\n", dev, dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
da->pi_prot_type = flag;
|
|
|
|
if (flag && !old_prot) {
|
|
ret = dev->transport->init_prot(dev);
|
|
if (ret) {
|
|
da->pi_prot_type = old_prot;
|
|
da->pi_prot_verify = (bool) da->pi_prot_type;
|
|
return ret;
|
|
}
|
|
|
|
} else if (!flag && old_prot) {
|
|
dev->transport->free_prot(dev);
|
|
}
|
|
|
|
da->pi_prot_verify = (bool) da->pi_prot_type;
|
|
pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag);
|
|
return count;
|
|
}
|
|
|
|
/* always zero, but attr needs to remain RW to avoid userspace breakage */
|
|
static ssize_t pi_prot_format_show(struct config_item *item, char *page)
|
|
{
|
|
return snprintf(page, PAGE_SIZE, "0\n");
|
|
}
|
|
|
|
static ssize_t pi_prot_format_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
struct se_device *dev = da->da_dev;
|
|
bool flag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!flag)
|
|
return count;
|
|
|
|
if (!dev->transport->format_prot) {
|
|
pr_err("DIF protection format not supported by backend %s\n",
|
|
dev->transport->name);
|
|
return -ENOSYS;
|
|
}
|
|
if (!target_dev_configured(dev)) {
|
|
pr_err("DIF protection format requires device to be configured\n");
|
|
return -ENODEV;
|
|
}
|
|
if (dev->export_count) {
|
|
pr_err("dev[%p]: Unable to format SE Device PROT type while"
|
|
" export_count is %d\n", dev, dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = dev->transport->format_prot(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pr_debug("dev[%p]: SE Device Protection Format complete\n", dev);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t pi_prot_verify_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
bool flag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!flag) {
|
|
da->pi_prot_verify = flag;
|
|
return count;
|
|
}
|
|
if (da->hw_pi_prot_type) {
|
|
pr_warn("DIF protection enabled on underlying hardware,"
|
|
" ignoring\n");
|
|
return count;
|
|
}
|
|
if (!da->pi_prot_type) {
|
|
pr_warn("DIF protection not supported by backend, ignoring\n");
|
|
return count;
|
|
}
|
|
da->pi_prot_verify = flag;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t force_pr_aptpl_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
bool flag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (da->da_dev->export_count) {
|
|
pr_err("dev[%p]: Unable to set force_pr_aptpl while"
|
|
" export_count is %d\n",
|
|
da->da_dev, da->da_dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
da->force_pr_aptpl = flag;
|
|
pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", da->da_dev, flag);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t emulate_rest_reord_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
bool flag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (flag != 0) {
|
|
printk(KERN_ERR "dev[%p]: SE Device emulation of restricted"
|
|
" reordering not implemented\n", da->da_dev);
|
|
return -ENOSYS;
|
|
}
|
|
da->emulate_rest_reord = flag;
|
|
pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n",
|
|
da->da_dev, flag);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t unmap_zeroes_data_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
bool flag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (da->da_dev->export_count) {
|
|
pr_err("dev[%p]: Unable to change SE Device"
|
|
" unmap_zeroes_data while export_count is %d\n",
|
|
da->da_dev, da->da_dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
/*
|
|
* We expect this value to be non-zero when generic Block Layer
|
|
* Discard supported is detected iblock_configure_device().
|
|
*/
|
|
if (flag && !da->max_unmap_block_desc_count) {
|
|
pr_err("dev[%p]: Thin Provisioning LBPRZ will not be set"
|
|
" because max_unmap_block_desc_count is zero\n",
|
|
da->da_dev);
|
|
return -ENOSYS;
|
|
}
|
|
da->unmap_zeroes_data = flag;
|
|
pr_debug("dev[%p]: SE Device Thin Provisioning LBPRZ bit: %d\n",
|
|
da->da_dev, flag);
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Note, this can only be called on unexported SE Device Object.
|
|
*/
|
|
static ssize_t queue_depth_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
struct se_device *dev = da->da_dev;
|
|
u32 val;
|
|
int ret;
|
|
|
|
ret = kstrtou32(page, 0, &val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (dev->export_count) {
|
|
pr_err("dev[%p]: Unable to change SE Device TCQ while"
|
|
" export_count is %d\n",
|
|
dev, dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
if (!val) {
|
|
pr_err("dev[%p]: Illegal ZERO value for queue_depth\n", dev);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (val > dev->dev_attrib.queue_depth) {
|
|
if (val > dev->dev_attrib.hw_queue_depth) {
|
|
pr_err("dev[%p]: Passed queue_depth:"
|
|
" %u exceeds TCM/SE_Device MAX"
|
|
" TCQ: %u\n", dev, val,
|
|
dev->dev_attrib.hw_queue_depth);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
da->queue_depth = dev->queue_depth = val;
|
|
pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, val);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t optimal_sectors_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
u32 val;
|
|
int ret;
|
|
|
|
ret = kstrtou32(page, 0, &val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (da->da_dev->export_count) {
|
|
pr_err("dev[%p]: Unable to change SE Device"
|
|
" optimal_sectors while export_count is %d\n",
|
|
da->da_dev, da->da_dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
if (val > da->hw_max_sectors) {
|
|
pr_err("dev[%p]: Passed optimal_sectors %u cannot be"
|
|
" greater than hw_max_sectors: %u\n",
|
|
da->da_dev, val, da->hw_max_sectors);
|
|
return -EINVAL;
|
|
}
|
|
|
|
da->optimal_sectors = val;
|
|
pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n",
|
|
da->da_dev, val);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t block_size_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
u32 val;
|
|
int ret;
|
|
|
|
ret = kstrtou32(page, 0, &val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (da->da_dev->export_count) {
|
|
pr_err("dev[%p]: Unable to change SE Device block_size"
|
|
" while export_count is %d\n",
|
|
da->da_dev, da->da_dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (val != 512 && val != 1024 && val != 2048 && val != 4096) {
|
|
pr_err("dev[%p]: Illegal value for block_device: %u"
|
|
" for SE device, must be 512, 1024, 2048 or 4096\n",
|
|
da->da_dev, val);
|
|
return -EINVAL;
|
|
}
|
|
|
|
da->block_size = val;
|
|
if (da->max_bytes_per_io)
|
|
da->hw_max_sectors = da->max_bytes_per_io / val;
|
|
|
|
pr_debug("dev[%p]: SE Device block_size changed to %u\n",
|
|
da->da_dev, val);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t alua_support_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
u8 flags = da->da_dev->transport_flags;
|
|
|
|
return snprintf(page, PAGE_SIZE, "%d\n",
|
|
flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA ? 0 : 1);
|
|
}
|
|
|
|
static ssize_t alua_support_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
struct se_device *dev = da->da_dev;
|
|
bool flag, oldflag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
oldflag = !(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA);
|
|
if (flag == oldflag)
|
|
return count;
|
|
|
|
if (!(dev->transport->transport_flags_changeable &
|
|
TRANSPORT_FLAG_PASSTHROUGH_ALUA)) {
|
|
pr_err("dev[%p]: Unable to change SE Device alua_support:"
|
|
" alua_support has fixed value\n", dev);
|
|
return -ENOSYS;
|
|
}
|
|
|
|
if (flag)
|
|
dev->transport_flags &= ~TRANSPORT_FLAG_PASSTHROUGH_ALUA;
|
|
else
|
|
dev->transport_flags |= TRANSPORT_FLAG_PASSTHROUGH_ALUA;
|
|
return count;
|
|
}
|
|
|
|
static ssize_t pgr_support_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
u8 flags = da->da_dev->transport_flags;
|
|
|
|
return snprintf(page, PAGE_SIZE, "%d\n",
|
|
flags & TRANSPORT_FLAG_PASSTHROUGH_PGR ? 0 : 1);
|
|
}
|
|
|
|
static ssize_t pgr_support_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_dev_attrib *da = to_attrib(item);
|
|
struct se_device *dev = da->da_dev;
|
|
bool flag, oldflag;
|
|
int ret;
|
|
|
|
ret = strtobool(page, &flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
oldflag = !(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR);
|
|
if (flag == oldflag)
|
|
return count;
|
|
|
|
if (!(dev->transport->transport_flags_changeable &
|
|
TRANSPORT_FLAG_PASSTHROUGH_PGR)) {
|
|
pr_err("dev[%p]: Unable to change SE Device pgr_support:"
|
|
" pgr_support has fixed value\n", dev);
|
|
return -ENOSYS;
|
|
}
|
|
|
|
if (flag)
|
|
dev->transport_flags &= ~TRANSPORT_FLAG_PASSTHROUGH_PGR;
|
|
else
|
|
dev->transport_flags |= TRANSPORT_FLAG_PASSTHROUGH_PGR;
|
|
return count;
|
|
}
|
|
|
|
CONFIGFS_ATTR(, emulate_model_alias);
|
|
CONFIGFS_ATTR(, emulate_dpo);
|
|
CONFIGFS_ATTR(, emulate_fua_write);
|
|
CONFIGFS_ATTR(, emulate_fua_read);
|
|
CONFIGFS_ATTR(, emulate_write_cache);
|
|
CONFIGFS_ATTR(, emulate_ua_intlck_ctrl);
|
|
CONFIGFS_ATTR(, emulate_tas);
|
|
CONFIGFS_ATTR(, emulate_tpu);
|
|
CONFIGFS_ATTR(, emulate_tpws);
|
|
CONFIGFS_ATTR(, emulate_caw);
|
|
CONFIGFS_ATTR(, emulate_3pc);
|
|
CONFIGFS_ATTR(, emulate_pr);
|
|
CONFIGFS_ATTR(, pi_prot_type);
|
|
CONFIGFS_ATTR_RO(, hw_pi_prot_type);
|
|
CONFIGFS_ATTR(, pi_prot_format);
|
|
CONFIGFS_ATTR(, pi_prot_verify);
|
|
CONFIGFS_ATTR(, enforce_pr_isids);
|
|
CONFIGFS_ATTR(, is_nonrot);
|
|
CONFIGFS_ATTR(, emulate_rest_reord);
|
|
CONFIGFS_ATTR(, force_pr_aptpl);
|
|
CONFIGFS_ATTR_RO(, hw_block_size);
|
|
CONFIGFS_ATTR(, block_size);
|
|
CONFIGFS_ATTR_RO(, hw_max_sectors);
|
|
CONFIGFS_ATTR(, optimal_sectors);
|
|
CONFIGFS_ATTR_RO(, hw_queue_depth);
|
|
CONFIGFS_ATTR(, queue_depth);
|
|
CONFIGFS_ATTR(, max_unmap_lba_count);
|
|
CONFIGFS_ATTR(, max_unmap_block_desc_count);
|
|
CONFIGFS_ATTR(, unmap_granularity);
|
|
CONFIGFS_ATTR(, unmap_granularity_alignment);
|
|
CONFIGFS_ATTR(, unmap_zeroes_data);
|
|
CONFIGFS_ATTR(, max_write_same_len);
|
|
CONFIGFS_ATTR(, alua_support);
|
|
CONFIGFS_ATTR(, pgr_support);
|
|
|
|
/*
|
|
* dev_attrib attributes for devices using the target core SBC/SPC
|
|
* interpreter. Any backend using spc_parse_cdb should be using
|
|
* these.
|
|
*/
|
|
struct configfs_attribute *sbc_attrib_attrs[] = {
|
|
&attr_emulate_model_alias,
|
|
&attr_emulate_dpo,
|
|
&attr_emulate_fua_write,
|
|
&attr_emulate_fua_read,
|
|
&attr_emulate_write_cache,
|
|
&attr_emulate_ua_intlck_ctrl,
|
|
&attr_emulate_tas,
|
|
&attr_emulate_tpu,
|
|
&attr_emulate_tpws,
|
|
&attr_emulate_caw,
|
|
&attr_emulate_3pc,
|
|
&attr_emulate_pr,
|
|
&attr_pi_prot_type,
|
|
&attr_hw_pi_prot_type,
|
|
&attr_pi_prot_format,
|
|
&attr_pi_prot_verify,
|
|
&attr_enforce_pr_isids,
|
|
&attr_is_nonrot,
|
|
&attr_emulate_rest_reord,
|
|
&attr_force_pr_aptpl,
|
|
&attr_hw_block_size,
|
|
&attr_block_size,
|
|
&attr_hw_max_sectors,
|
|
&attr_optimal_sectors,
|
|
&attr_hw_queue_depth,
|
|
&attr_queue_depth,
|
|
&attr_max_unmap_lba_count,
|
|
&attr_max_unmap_block_desc_count,
|
|
&attr_unmap_granularity,
|
|
&attr_unmap_granularity_alignment,
|
|
&attr_unmap_zeroes_data,
|
|
&attr_max_write_same_len,
|
|
&attr_alua_support,
|
|
&attr_pgr_support,
|
|
NULL,
|
|
};
|
|
EXPORT_SYMBOL(sbc_attrib_attrs);
|
|
|
|
/*
|
|
* Minimal dev_attrib attributes for devices passing through CDBs.
|
|
* In this case we only provide a few read-only attributes for
|
|
* backwards compatibility.
|
|
*/
|
|
struct configfs_attribute *passthrough_attrib_attrs[] = {
|
|
&attr_hw_pi_prot_type,
|
|
&attr_hw_block_size,
|
|
&attr_hw_max_sectors,
|
|
&attr_hw_queue_depth,
|
|
&attr_emulate_pr,
|
|
&attr_alua_support,
|
|
&attr_pgr_support,
|
|
NULL,
|
|
};
|
|
EXPORT_SYMBOL(passthrough_attrib_attrs);
|
|
|
|
/*
|
|
* pr related dev_attrib attributes for devices passing through CDBs,
|
|
* but allowing in core pr emulation.
|
|
*/
|
|
struct configfs_attribute *passthrough_pr_attrib_attrs[] = {
|
|
&attr_enforce_pr_isids,
|
|
&attr_force_pr_aptpl,
|
|
NULL,
|
|
};
|
|
EXPORT_SYMBOL(passthrough_pr_attrib_attrs);
|
|
|
|
TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL);
|
|
TB_CIT_SETUP_DRV(dev_action, NULL, NULL);
|
|
|
|
/* End functions for struct config_item_type tb_dev_attrib_cit */
|
|
|
|
/* Start functions for struct config_item_type tb_dev_wwn_cit */
|
|
|
|
static struct t10_wwn *to_t10_wwn(struct config_item *item)
|
|
{
|
|
return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group);
|
|
}
|
|
|
|
static ssize_t target_check_inquiry_data(char *buf)
|
|
{
|
|
size_t len;
|
|
int i;
|
|
|
|
len = strlen(buf);
|
|
|
|
/*
|
|
* SPC 4.3.1:
|
|
* ASCII data fields shall contain only ASCII printable characters
|
|
* (i.e., code values 20h to 7Eh) and may be terminated with one or
|
|
* more ASCII null (00h) characters.
|
|
*/
|
|
for (i = 0; i < len; i++) {
|
|
if (buf[i] < 0x20 || buf[i] > 0x7E) {
|
|
pr_err("Emulated T10 Inquiry Data contains non-ASCII-printable characters\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* STANDARD and VPD page 0x83 T10 Vendor Identification
|
|
*/
|
|
static ssize_t target_wwn_vendor_id_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "%s\n", &to_t10_wwn(item)->vendor[0]);
|
|
}
|
|
|
|
static ssize_t target_wwn_vendor_id_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct t10_wwn *t10_wwn = to_t10_wwn(item);
|
|
struct se_device *dev = t10_wwn->t10_dev;
|
|
/* +2 to allow for a trailing (stripped) '\n' and null-terminator */
|
|
unsigned char buf[INQUIRY_VENDOR_LEN + 2];
|
|
char *stripped = NULL;
|
|
size_t len;
|
|
ssize_t ret;
|
|
|
|
len = strlcpy(buf, page, sizeof(buf));
|
|
if (len < sizeof(buf)) {
|
|
/* Strip any newline added from userspace. */
|
|
stripped = strstrip(buf);
|
|
len = strlen(stripped);
|
|
}
|
|
if (len > INQUIRY_VENDOR_LEN) {
|
|
pr_err("Emulated T10 Vendor Identification exceeds"
|
|
" INQUIRY_VENDOR_LEN: " __stringify(INQUIRY_VENDOR_LEN)
|
|
"\n");
|
|
return -EOVERFLOW;
|
|
}
|
|
|
|
ret = target_check_inquiry_data(stripped);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/*
|
|
* Check to see if any active 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 T10 Vendor Identification while"
|
|
" active %d exports exist\n", dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
BUILD_BUG_ON(sizeof(dev->t10_wwn.vendor) != INQUIRY_VENDOR_LEN + 1);
|
|
strlcpy(dev->t10_wwn.vendor, stripped, sizeof(dev->t10_wwn.vendor));
|
|
|
|
pr_debug("Target_Core_ConfigFS: Set emulated T10 Vendor Identification:"
|
|
" %s\n", dev->t10_wwn.vendor);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t target_wwn_product_id_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "%s\n", &to_t10_wwn(item)->model[0]);
|
|
}
|
|
|
|
static ssize_t target_wwn_product_id_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct t10_wwn *t10_wwn = to_t10_wwn(item);
|
|
struct se_device *dev = t10_wwn->t10_dev;
|
|
/* +2 to allow for a trailing (stripped) '\n' and null-terminator */
|
|
unsigned char buf[INQUIRY_MODEL_LEN + 2];
|
|
char *stripped = NULL;
|
|
size_t len;
|
|
ssize_t ret;
|
|
|
|
len = strlcpy(buf, page, sizeof(buf));
|
|
if (len < sizeof(buf)) {
|
|
/* Strip any newline added from userspace. */
|
|
stripped = strstrip(buf);
|
|
len = strlen(stripped);
|
|
}
|
|
if (len > INQUIRY_MODEL_LEN) {
|
|
pr_err("Emulated T10 Vendor exceeds INQUIRY_MODEL_LEN: "
|
|
__stringify(INQUIRY_MODEL_LEN)
|
|
"\n");
|
|
return -EOVERFLOW;
|
|
}
|
|
|
|
ret = target_check_inquiry_data(stripped);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/*
|
|
* Check to see if any active 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 T10 Model while active %d exports exist\n",
|
|
dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1);
|
|
strlcpy(dev->t10_wwn.model, stripped, sizeof(dev->t10_wwn.model));
|
|
|
|
pr_debug("Target_Core_ConfigFS: Set emulated T10 Model Identification: %s\n",
|
|
dev->t10_wwn.model);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t target_wwn_revision_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "%s\n", &to_t10_wwn(item)->revision[0]);
|
|
}
|
|
|
|
static ssize_t target_wwn_revision_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct t10_wwn *t10_wwn = to_t10_wwn(item);
|
|
struct se_device *dev = t10_wwn->t10_dev;
|
|
/* +2 to allow for a trailing (stripped) '\n' and null-terminator */
|
|
unsigned char buf[INQUIRY_REVISION_LEN + 2];
|
|
char *stripped = NULL;
|
|
size_t len;
|
|
ssize_t ret;
|
|
|
|
len = strlcpy(buf, page, sizeof(buf));
|
|
if (len < sizeof(buf)) {
|
|
/* Strip any newline added from userspace. */
|
|
stripped = strstrip(buf);
|
|
len = strlen(stripped);
|
|
}
|
|
if (len > INQUIRY_REVISION_LEN) {
|
|
pr_err("Emulated T10 Revision exceeds INQUIRY_REVISION_LEN: "
|
|
__stringify(INQUIRY_REVISION_LEN)
|
|
"\n");
|
|
return -EOVERFLOW;
|
|
}
|
|
|
|
ret = target_check_inquiry_data(stripped);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/*
|
|
* Check to see if any active 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 T10 Revision while active %d exports exist\n",
|
|
dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
BUILD_BUG_ON(sizeof(dev->t10_wwn.revision) != INQUIRY_REVISION_LEN + 1);
|
|
strlcpy(dev->t10_wwn.revision, stripped, sizeof(dev->t10_wwn.revision));
|
|
|
|
pr_debug("Target_Core_ConfigFS: Set emulated T10 Revision: %s\n",
|
|
dev->t10_wwn.revision);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t
|
|
target_wwn_company_id_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return snprintf(page, PAGE_SIZE, "%#08x\n",
|
|
to_t10_wwn(item)->company_id);
|
|
}
|
|
|
|
static ssize_t
|
|
target_wwn_company_id_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct t10_wwn *t10_wwn = to_t10_wwn(item);
|
|
struct se_device *dev = t10_wwn->t10_dev;
|
|
u32 val;
|
|
int ret;
|
|
|
|
/*
|
|
* The IEEE COMPANY_ID field should contain a 24-bit canonical
|
|
* form OUI assigned by the IEEE.
|
|
*/
|
|
ret = kstrtou32(page, 0, &val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (val >= 0x1000000)
|
|
return -EOVERFLOW;
|
|
|
|
/*
|
|
* Check to see if any active 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 Company ID while %u exports exist\n",
|
|
dev->export_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
t10_wwn->company_id = val;
|
|
|
|
pr_debug("Target_Core_ConfigFS: Set IEEE Company ID: %#08x\n",
|
|
t10_wwn->company_id);
|
|
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* VPD page 0x80 Unit serial
|
|
*/
|
|
static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "T10 VPD Unit Serial Number: %s\n",
|
|
&to_t10_wwn(item)->unit_serial[0]);
|
|
}
|
|
|
|
static ssize_t target_wwn_vpd_unit_serial_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct t10_wwn *t10_wwn = to_t10_wwn(item);
|
|
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
|
|
*/
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* VPD page 0x83 Protocol Identifier
|
|
*/
|
|
static ssize_t target_wwn_vpd_protocol_identifier_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct t10_wwn *t10_wwn = to_t10_wwn(item);
|
|
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->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;
|
|
}
|
|
|
|
/*
|
|
* Generic wrapper for dumping VPD identifiers by association.
|
|
*/
|
|
#define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \
|
|
static ssize_t target_wwn_##_name##_show(struct config_item *item, \
|
|
char *page) \
|
|
{ \
|
|
struct t10_wwn *t10_wwn = to_t10_wwn(item); \
|
|
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);
|
|
/* VPD page 0x83 Association: Target Port */
|
|
DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10);
|
|
/* VPD page 0x83 Association: SCSI Target Device */
|
|
DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20);
|
|
|
|
CONFIGFS_ATTR(target_wwn_, vendor_id);
|
|
CONFIGFS_ATTR(target_wwn_, product_id);
|
|
CONFIGFS_ATTR(target_wwn_, revision);
|
|
CONFIGFS_ATTR(target_wwn_, company_id);
|
|
CONFIGFS_ATTR(target_wwn_, vpd_unit_serial);
|
|
CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier);
|
|
CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit);
|
|
CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port);
|
|
CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device);
|
|
|
|
static struct configfs_attribute *target_core_dev_wwn_attrs[] = {
|
|
&target_wwn_attr_vendor_id,
|
|
&target_wwn_attr_product_id,
|
|
&target_wwn_attr_revision,
|
|
&target_wwn_attr_company_id,
|
|
&target_wwn_attr_vpd_unit_serial,
|
|
&target_wwn_attr_vpd_protocol_identifier,
|
|
&target_wwn_attr_vpd_assoc_logical_unit,
|
|
&target_wwn_attr_vpd_assoc_target_port,
|
|
&target_wwn_attr_vpd_assoc_scsi_target_device,
|
|
NULL,
|
|
};
|
|
|
|
TB_CIT_SETUP(dev_wwn, NULL, NULL, target_core_dev_wwn_attrs);
|
|
|
|
/* End functions for struct config_item_type tb_dev_wwn_cit */
|
|
|
|
/* Start functions for struct config_item_type tb_dev_pr_cit */
|
|
|
|
static struct se_device *pr_to_dev(struct config_item *item)
|
|
{
|
|
return container_of(to_config_group(item), struct se_device,
|
|
dev_pr_group);
|
|
}
|
|
|
|
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] = { };
|
|
|
|
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;
|
|
core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);
|
|
|
|
return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n",
|
|
se_nacl->se_tpg->se_tpg_tfo->fabric_name,
|
|
se_nacl->initiatorname, i_buf);
|
|
}
|
|
|
|
static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev,
|
|
char *page)
|
|
{
|
|
struct se_session *sess = dev->reservation_holder;
|
|
struct se_node_acl *se_nacl;
|
|
ssize_t len;
|
|
|
|
if (sess) {
|
|
se_nacl = sess->se_node_acl;
|
|
len = sprintf(page,
|
|
"SPC-2 Reservation: %s Initiator: %s\n",
|
|
se_nacl->se_tpg->se_tpg_tfo->fabric_name,
|
|
se_nacl->initiatorname);
|
|
} else {
|
|
len = sprintf(page, "No SPC-2 Reservation holder\n");
|
|
}
|
|
return len;
|
|
}
|
|
|
|
static ssize_t target_pr_res_holder_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_device *dev = pr_to_dev(item);
|
|
int ret;
|
|
|
|
if (!dev->dev_attrib.emulate_pr)
|
|
return sprintf(page, "SPC_RESERVATIONS_DISABLED\n");
|
|
|
|
if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)
|
|
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;
|
|
}
|
|
|
|
static ssize_t target_pr_res_pr_all_tgt_pts_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct se_device *dev = pr_to_dev(item);
|
|
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;
|
|
}
|
|
|
|
static ssize_t target_pr_res_pr_generation_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "0x%08x\n", pr_to_dev(item)->t10_pr.pr_generation);
|
|
}
|
|
|
|
|
|
static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct se_device *dev = pr_to_dev(item);
|
|
struct se_node_acl *se_nacl;
|
|
struct se_portal_group *se_tpg;
|
|
struct t10_pr_registration *pr_reg;
|
|
const 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;
|
|
tfo = se_tpg->se_tpg_tfo;
|
|
|
|
len += sprintf(page+len, "SPC-3 Reservation: %s"
|
|
" Target Node Endpoint: %s\n", tfo->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: %llu\n", pr_reg->tg_pt_sep_rtpi,
|
|
tfo->fabric_name, tfo->tpg_get_tag(se_tpg),
|
|
tfo->fabric_name, pr_reg->pr_aptpl_target_lun);
|
|
|
|
out_unlock:
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
return len;
|
|
}
|
|
|
|
|
|
static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct se_device *dev = pr_to_dev(item);
|
|
const 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;
|
|
|
|
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;
|
|
core_pr_dump_initiator_port(pr_reg, i_buf,
|
|
PR_REG_ISID_ID_LEN);
|
|
sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n",
|
|
tfo->fabric_name,
|
|
pr_reg->pr_reg_nacl->initiatorname, i_buf, 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;
|
|
}
|
|
|
|
static ssize_t target_pr_res_pr_type_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_device *dev = pr_to_dev(item);
|
|
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;
|
|
}
|
|
|
|
static ssize_t target_pr_res_type_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_device *dev = pr_to_dev(item);
|
|
|
|
if (!dev->dev_attrib.emulate_pr)
|
|
return sprintf(page, "SPC_RESERVATIONS_DISABLED\n");
|
|
if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)
|
|
return sprintf(page, "SPC_PASSTHROUGH\n");
|
|
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
|
|
return sprintf(page, "SPC2_RESERVATIONS\n");
|
|
|
|
return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n");
|
|
}
|
|
|
|
static ssize_t target_pr_res_aptpl_active_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct se_device *dev = pr_to_dev(item);
|
|
|
|
if (!dev->dev_attrib.emulate_pr ||
|
|
(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR))
|
|
return 0;
|
|
|
|
return sprintf(page, "APTPL Bit Status: %s\n",
|
|
(dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled");
|
|
}
|
|
|
|
static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct se_device *dev = pr_to_dev(item);
|
|
|
|
if (!dev->dev_attrib.emulate_pr ||
|
|
(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR))
|
|
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=%u"},
|
|
{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=%u"},
|
|
{Opt_err, NULL}
|
|
};
|
|
|
|
static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_device *dev = pr_to_dev(item);
|
|
unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL;
|
|
unsigned char *t_fabric = NULL, *t_port = NULL;
|
|
char *orig, *ptr, *opts;
|
|
substring_t args[MAX_OPT_ARGS];
|
|
unsigned long long tmp_ll;
|
|
u64 sa_res_key = 0;
|
|
u64 mapped_lun = 0, target_lun = 0;
|
|
int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token;
|
|
u16 tpgt = 0;
|
|
u8 type = 0;
|
|
|
|
if (!dev->dev_attrib.emulate_pr ||
|
|
(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR))
|
|
return count;
|
|
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
|
|
return count;
|
|
|
|
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);
|
|
if (!i_fabric) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
break;
|
|
case Opt_initiator_node:
|
|
i_port = match_strdup(args);
|
|
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);
|
|
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:
|
|
ret = match_u64(args, &tmp_ll);
|
|
if (ret < 0) {
|
|
pr_err("kstrtoull() failed for sa_res_key=\n");
|
|
goto out;
|
|
}
|
|
sa_res_key = (u64)tmp_ll;
|
|
break;
|
|
/*
|
|
* PR APTPL Metadata for Reservation
|
|
*/
|
|
case Opt_res_holder:
|
|
ret = match_int(args, &arg);
|
|
if (ret)
|
|
goto out;
|
|
res_holder = arg;
|
|
break;
|
|
case Opt_res_type:
|
|
ret = match_int(args, &arg);
|
|
if (ret)
|
|
goto out;
|
|
type = (u8)arg;
|
|
break;
|
|
case Opt_res_scope:
|
|
ret = match_int(args, &arg);
|
|
if (ret)
|
|
goto out;
|
|
break;
|
|
case Opt_res_all_tg_pt:
|
|
ret = match_int(args, &arg);
|
|
if (ret)
|
|
goto out;
|
|
all_tg_pt = (int)arg;
|
|
break;
|
|
case Opt_mapped_lun:
|
|
ret = match_u64(args, &tmp_ll);
|
|
if (ret)
|
|
goto out;
|
|
mapped_lun = (u64)tmp_ll;
|
|
break;
|
|
/*
|
|
* PR APTPL Metadata for Target Port
|
|
*/
|
|
case Opt_target_fabric:
|
|
t_fabric = match_strdup(args);
|
|
if (!t_fabric) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
break;
|
|
case Opt_target_node:
|
|
t_port = match_strdup(args);
|
|
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:
|
|
ret = match_int(args, &arg);
|
|
if (ret)
|
|
goto out;
|
|
tpgt = (u16)arg;
|
|
break;
|
|
case Opt_port_rtpi:
|
|
ret = match_int(args, &arg);
|
|
if (ret)
|
|
goto out;
|
|
break;
|
|
case Opt_target_lun:
|
|
ret = match_u64(args, &tmp_ll);
|
|
if (ret)
|
|
goto out;
|
|
target_lun = (u64)tmp_ll;
|
|
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;
|
|
}
|
|
|
|
|
|
CONFIGFS_ATTR_RO(target_pr_, res_holder);
|
|
CONFIGFS_ATTR_RO(target_pr_, res_pr_all_tgt_pts);
|
|
CONFIGFS_ATTR_RO(target_pr_, res_pr_generation);
|
|
CONFIGFS_ATTR_RO(target_pr_, res_pr_holder_tg_port);
|
|
CONFIGFS_ATTR_RO(target_pr_, res_pr_registered_i_pts);
|
|
CONFIGFS_ATTR_RO(target_pr_, res_pr_type);
|
|
CONFIGFS_ATTR_RO(target_pr_, res_type);
|
|
CONFIGFS_ATTR_RO(target_pr_, res_aptpl_active);
|
|
CONFIGFS_ATTR(target_pr_, res_aptpl_metadata);
|
|
|
|
static struct configfs_attribute *target_core_dev_pr_attrs[] = {
|
|
&target_pr_attr_res_holder,
|
|
&target_pr_attr_res_pr_all_tgt_pts,
|
|
&target_pr_attr_res_pr_generation,
|
|
&target_pr_attr_res_pr_holder_tg_port,
|
|
&target_pr_attr_res_pr_registered_i_pts,
|
|
&target_pr_attr_res_pr_type,
|
|
&target_pr_attr_res_type,
|
|
&target_pr_attr_res_aptpl_active,
|
|
&target_pr_attr_res_aptpl_metadata,
|
|
NULL,
|
|
};
|
|
|
|
TB_CIT_SETUP(dev_pr, NULL, NULL, target_core_dev_pr_attrs);
|
|
|
|
/* End functions for struct config_item_type tb_dev_pr_cit */
|
|
|
|
/* Start functions for struct config_item_type tb_dev_cit */
|
|
|
|
static inline struct se_device *to_device(struct config_item *item)
|
|
{
|
|
return container_of(to_config_group(item), struct se_device, dev_group);
|
|
}
|
|
|
|
static ssize_t target_dev_info_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
int bl = 0;
|
|
ssize_t read_bytes = 0;
|
|
|
|
transport_dump_dev_state(dev, page, &bl);
|
|
read_bytes += bl;
|
|
read_bytes += dev->transport->show_configfs_dev_params(dev,
|
|
page+read_bytes);
|
|
return read_bytes;
|
|
}
|
|
|
|
static ssize_t target_dev_control_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
|
|
return dev->transport->set_configfs_dev_params(dev, page, count);
|
|
}
|
|
|
|
static ssize_t target_dev_alias_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
|
|
if (!(dev->dev_flags & DF_USING_ALIAS))
|
|
return 0;
|
|
|
|
return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias);
|
|
}
|
|
|
|
static ssize_t target_dev_alias_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
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 ssize_t target_dev_udev_path_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
|
|
if (!(dev->dev_flags & DF_USING_UDEV_PATH))
|
|
return 0;
|
|
|
|
return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path);
|
|
}
|
|
|
|
static ssize_t target_dev_udev_path_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
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 ssize_t target_dev_enable_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
|
|
return snprintf(page, PAGE_SIZE, "%d\n", target_dev_configured(dev));
|
|
}
|
|
|
|
static ssize_t target_dev_enable_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
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 ssize_t target_dev_alua_lu_gp_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
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_dev_alua_lu_gp_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
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 count;
|
|
|
|
if (count > LU_GROUP_NAME_BUF) {
|
|
pr_err("ALUA LU Group Alias too large!\n");
|
|
return -EINVAL;
|
|
}
|
|
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 ssize_t target_dev_lba_map_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
struct t10_alua_lba_map *map;
|
|
struct t10_alua_lba_map_member *mem;
|
|
char *b = page;
|
|
int bl = 0;
|
|
char state;
|
|
|
|
spin_lock(&dev->t10_alua.lba_map_lock);
|
|
if (!list_empty(&dev->t10_alua.lba_map_list))
|
|
bl += sprintf(b + bl, "%u %u\n",
|
|
dev->t10_alua.lba_map_segment_size,
|
|
dev->t10_alua.lba_map_segment_multiplier);
|
|
list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) {
|
|
bl += sprintf(b + bl, "%llu %llu",
|
|
map->lba_map_first_lba, map->lba_map_last_lba);
|
|
list_for_each_entry(mem, &map->lba_map_mem_list,
|
|
lba_map_mem_list) {
|
|
switch (mem->lba_map_mem_alua_state) {
|
|
case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED:
|
|
state = 'O';
|
|
break;
|
|
case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED:
|
|
state = 'A';
|
|
break;
|
|
case ALUA_ACCESS_STATE_STANDBY:
|
|
state = 'S';
|
|
break;
|
|
case ALUA_ACCESS_STATE_UNAVAILABLE:
|
|
state = 'U';
|
|
break;
|
|
default:
|
|
state = '.';
|
|
break;
|
|
}
|
|
bl += sprintf(b + bl, " %d:%c",
|
|
mem->lba_map_mem_alua_pg_id, state);
|
|
}
|
|
bl += sprintf(b + bl, "\n");
|
|
}
|
|
spin_unlock(&dev->t10_alua.lba_map_lock);
|
|
return bl;
|
|
}
|
|
|
|
static ssize_t target_dev_lba_map_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_device *dev = to_device(item);
|
|
struct t10_alua_lba_map *lba_map = NULL;
|
|
struct list_head lba_list;
|
|
char *map_entries, *orig, *ptr;
|
|
char state;
|
|
int pg_num = -1, pg;
|
|
int ret = 0, num = 0, pg_id, alua_state;
|
|
unsigned long start_lba = -1, end_lba = -1;
|
|
unsigned long segment_size = -1, segment_mult = -1;
|
|
|
|
orig = map_entries = kstrdup(page, GFP_KERNEL);
|
|
if (!map_entries)
|
|
return -ENOMEM;
|
|
|
|
INIT_LIST_HEAD(&lba_list);
|
|
while ((ptr = strsep(&map_entries, "\n")) != NULL) {
|
|
if (!*ptr)
|
|
continue;
|
|
|
|
if (num == 0) {
|
|
if (sscanf(ptr, "%lu %lu\n",
|
|
&segment_size, &segment_mult) != 2) {
|
|
pr_err("Invalid line %d\n", num);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
num++;
|
|
continue;
|
|
}
|
|
if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) {
|
|
pr_err("Invalid line %d\n", num);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
ptr = strchr(ptr, ' ');
|
|
if (!ptr) {
|
|
pr_err("Invalid line %d, missing end lba\n", num);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
ptr++;
|
|
ptr = strchr(ptr, ' ');
|
|
if (!ptr) {
|
|
pr_err("Invalid line %d, missing state definitions\n",
|
|
num);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
ptr++;
|
|
lba_map = core_alua_allocate_lba_map(&lba_list,
|
|
start_lba, end_lba);
|
|
if (IS_ERR(lba_map)) {
|
|
ret = PTR_ERR(lba_map);
|
|
break;
|
|
}
|
|
pg = 0;
|
|
while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) {
|
|
switch (state) {
|
|
case 'O':
|
|
alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED;
|
|
break;
|
|
case 'A':
|
|
alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED;
|
|
break;
|
|
case 'S':
|
|
alua_state = ALUA_ACCESS_STATE_STANDBY;
|
|
break;
|
|
case 'U':
|
|
alua_state = ALUA_ACCESS_STATE_UNAVAILABLE;
|
|
break;
|
|
default:
|
|
pr_err("Invalid ALUA state '%c'\n", state);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ret = core_alua_allocate_lba_map_mem(lba_map,
|
|
pg_id, alua_state);
|
|
if (ret) {
|
|
pr_err("Invalid target descriptor %d:%c "
|
|
"at line %d\n",
|
|
pg_id, state, num);
|
|
break;
|
|
}
|
|
pg++;
|
|
ptr = strchr(ptr, ' ');
|
|
if (ptr)
|
|
ptr++;
|
|
else
|
|
break;
|
|
}
|
|
if (pg_num == -1)
|
|
pg_num = pg;
|
|
else if (pg != pg_num) {
|
|
pr_err("Only %d from %d port groups definitions "
|
|
"at line %d\n", pg, pg_num, num);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
num++;
|
|
}
|
|
out:
|
|
if (ret) {
|
|
core_alua_free_lba_map(&lba_list);
|
|
count = ret;
|
|
} else
|
|
core_alua_set_lba_map(dev, &lba_list,
|
|
segment_size, segment_mult);
|
|
kfree(orig);
|
|
return count;
|
|
}
|
|
|
|
CONFIGFS_ATTR_RO(target_dev_, info);
|
|
CONFIGFS_ATTR_WO(target_dev_, control);
|
|
CONFIGFS_ATTR(target_dev_, alias);
|
|
CONFIGFS_ATTR(target_dev_, udev_path);
|
|
CONFIGFS_ATTR(target_dev_, enable);
|
|
CONFIGFS_ATTR(target_dev_, alua_lu_gp);
|
|
CONFIGFS_ATTR(target_dev_, lba_map);
|
|
|
|
static struct configfs_attribute *target_core_dev_attrs[] = {
|
|
&target_dev_attr_info,
|
|
&target_dev_attr_control,
|
|
&target_dev_attr_alias,
|
|
&target_dev_attr_udev_path,
|
|
&target_dev_attr_enable,
|
|
&target_dev_attr_alua_lu_gp,
|
|
&target_dev_attr_lba_map,
|
|
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);
|
|
|
|
target_free_device(dev);
|
|
}
|
|
|
|
/*
|
|
* Used in target_core_fabric_configfs.c to verify valid se_device symlink
|
|
* within target_fabric_port_link()
|
|
*/
|
|
struct configfs_item_operations target_core_dev_item_ops = {
|
|
.release = target_core_dev_release,
|
|
};
|
|
|
|
TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs);
|
|
|
|
/* End functions for struct config_item_type tb_dev_cit */
|
|
|
|
/* Start functions for struct config_item_type target_core_alua_lu_gp_cit */
|
|
|
|
static inline struct t10_alua_lu_gp *to_lu_gp(struct config_item *item)
|
|
{
|
|
return container_of(to_config_group(item), struct t10_alua_lu_gp,
|
|
lu_gp_group);
|
|
}
|
|
|
|
static ssize_t target_lu_gp_lu_gp_id_show(struct config_item *item, char *page)
|
|
{
|
|
struct t10_alua_lu_gp *lu_gp = to_lu_gp(item);
|
|
|
|
if (!lu_gp->lu_gp_valid_id)
|
|
return 0;
|
|
return sprintf(page, "%hu\n", lu_gp->lu_gp_id);
|
|
}
|
|
|
|
static ssize_t target_lu_gp_lu_gp_id_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct t10_alua_lu_gp *lu_gp = to_lu_gp(item);
|
|
struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group;
|
|
unsigned long lu_gp_id;
|
|
int ret;
|
|
|
|
ret = kstrtoul(page, 0, &lu_gp_id);
|
|
if (ret < 0) {
|
|
pr_err("kstrtoul() returned %d for"
|
|
" lu_gp_id\n", ret);
|
|
return ret;
|
|
}
|
|
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;
|
|
}
|
|
|
|
static ssize_t target_lu_gp_members_show(struct config_item *item, char *page)
|
|
{
|
|
struct t10_alua_lu_gp *lu_gp = to_lu_gp(item);
|
|
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] = { };
|
|
|
|
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;
|
|
}
|
|
|
|
CONFIGFS_ATTR(target_lu_gp_, lu_gp_id);
|
|
CONFIGFS_ATTR_RO(target_lu_gp_, members);
|
|
|
|
static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = {
|
|
&target_lu_gp_attr_lu_gp_id,
|
|
&target_lu_gp_attr_members,
|
|
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,
|
|
};
|
|
|
|
static const 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 const 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 */
|
|
|
|
static inline struct t10_alua_tg_pt_gp *to_tg_pt_gp(struct config_item *item)
|
|
{
|
|
return container_of(to_config_group(item), struct t10_alua_tg_pt_gp,
|
|
tg_pt_gp_group);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_alua_access_state_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return sprintf(page, "%d\n",
|
|
to_tg_pt_gp(item)->tg_pt_gp_alua_access_state);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_alua_access_state_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
|
|
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 implicit ALUA on invalid tg_pt_gp ID\n");
|
|
return -EINVAL;
|
|
}
|
|
if (!target_dev_configured(dev)) {
|
|
pr_err("Unable to set alua_access_state while device is"
|
|
" not configured\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
ret = kstrtoul(page, 0, &tmp);
|
|
if (ret < 0) {
|
|
pr_err("Unable to extract new ALUA access state from"
|
|
" %s\n", page);
|
|
return ret;
|
|
}
|
|
new_state = (int)tmp;
|
|
|
|
if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) {
|
|
pr_err("Unable to process implicit configfs ALUA"
|
|
" transition while TPGS_IMPLICIT_ALUA is disabled\n");
|
|
return -EINVAL;
|
|
}
|
|
if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA &&
|
|
new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) {
|
|
/* LBA DEPENDENT is only allowed with implicit ALUA */
|
|
pr_err("Unable to process implicit configfs ALUA transition"
|
|
" while explicit ALUA management is enabled\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = core_alua_do_port_transition(tg_pt_gp, dev,
|
|
NULL, NULL, new_state, 0);
|
|
return (!ret) ? count : -EINVAL;
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_alua_access_status_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
|
|
return sprintf(page, "%s\n",
|
|
core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status));
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_alua_access_status_store(
|
|
struct config_item *item, const char *page, size_t count)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
|
|
unsigned long tmp;
|
|
int new_status, ret;
|
|
|
|
if (!tg_pt_gp->tg_pt_gp_valid_id) {
|
|
pr_err("Unable to set ALUA access status on invalid tg_pt_gp ID\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = kstrtoul(page, 0, &tmp);
|
|
if (ret < 0) {
|
|
pr_err("Unable to extract new ALUA access status"
|
|
" from %s\n", page);
|
|
return ret;
|
|
}
|
|
new_status = (int)tmp;
|
|
|
|
if ((new_status != ALUA_STATUS_NONE) &&
|
|
(new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) &&
|
|
(new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_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;
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_alua_access_type_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return core_alua_show_access_type(to_tg_pt_gp(item), page);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_alua_access_type_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
return core_alua_store_access_type(to_tg_pt_gp(item), page, count);
|
|
}
|
|
|
|
#define ALUA_SUPPORTED_STATE_ATTR(_name, _bit) \
|
|
static ssize_t target_tg_pt_gp_alua_support_##_name##_show( \
|
|
struct config_item *item, char *p) \
|
|
{ \
|
|
struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \
|
|
return sprintf(p, "%d\n", \
|
|
!!(t->tg_pt_gp_alua_supported_states & _bit)); \
|
|
} \
|
|
\
|
|
static ssize_t target_tg_pt_gp_alua_support_##_name##_store( \
|
|
struct config_item *item, const char *p, size_t c) \
|
|
{ \
|
|
struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \
|
|
unsigned long tmp; \
|
|
int ret; \
|
|
\
|
|
if (!t->tg_pt_gp_valid_id) { \
|
|
pr_err("Unable to set " #_name " ALUA state on invalid tg_pt_gp ID\n"); \
|
|
return -EINVAL; \
|
|
} \
|
|
\
|
|
ret = kstrtoul(p, 0, &tmp); \
|
|
if (ret < 0) { \
|
|
pr_err("Invalid value '%s', must be '0' or '1'\n", p); \
|
|
return -EINVAL; \
|
|
} \
|
|
if (tmp > 1) { \
|
|
pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \
|
|
return -EINVAL; \
|
|
} \
|
|
if (tmp) \
|
|
t->tg_pt_gp_alua_supported_states |= _bit; \
|
|
else \
|
|
t->tg_pt_gp_alua_supported_states &= ~_bit; \
|
|
\
|
|
return c; \
|
|
}
|
|
|
|
ALUA_SUPPORTED_STATE_ATTR(transitioning, ALUA_T_SUP);
|
|
ALUA_SUPPORTED_STATE_ATTR(offline, ALUA_O_SUP);
|
|
ALUA_SUPPORTED_STATE_ATTR(lba_dependent, ALUA_LBD_SUP);
|
|
ALUA_SUPPORTED_STATE_ATTR(unavailable, ALUA_U_SUP);
|
|
ALUA_SUPPORTED_STATE_ATTR(standby, ALUA_S_SUP);
|
|
ALUA_SUPPORTED_STATE_ATTR(active_optimized, ALUA_AO_SUP);
|
|
ALUA_SUPPORTED_STATE_ATTR(active_nonoptimized, ALUA_AN_SUP);
|
|
|
|
static ssize_t target_tg_pt_gp_alua_write_metadata_show(
|
|
struct config_item *item, char *page)
|
|
{
|
|
return sprintf(page, "%d\n",
|
|
to_tg_pt_gp(item)->tg_pt_gp_write_metadata);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_alua_write_metadata_store(
|
|
struct config_item *item, const char *page, size_t count)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
|
|
unsigned long tmp;
|
|
int ret;
|
|
|
|
ret = kstrtoul(page, 0, &tmp);
|
|
if (ret < 0) {
|
|
pr_err("Unable to extract alua_write_metadata\n");
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_nonop_delay_msecs_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return core_alua_show_nonop_delay_msecs(to_tg_pt_gp(item), page);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_nonop_delay_msecs_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
return core_alua_store_nonop_delay_msecs(to_tg_pt_gp(item), page,
|
|
count);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_trans_delay_msecs_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return core_alua_show_trans_delay_msecs(to_tg_pt_gp(item), page);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_trans_delay_msecs_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
return core_alua_store_trans_delay_msecs(to_tg_pt_gp(item), page,
|
|
count);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_implicit_trans_secs_show(
|
|
struct config_item *item, char *page)
|
|
{
|
|
return core_alua_show_implicit_trans_secs(to_tg_pt_gp(item), page);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_implicit_trans_secs_store(
|
|
struct config_item *item, const char *page, size_t count)
|
|
{
|
|
return core_alua_store_implicit_trans_secs(to_tg_pt_gp(item), page,
|
|
count);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_preferred_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return core_alua_show_preferred_bit(to_tg_pt_gp(item), page);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_preferred_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
return core_alua_store_preferred_bit(to_tg_pt_gp(item), page, count);
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_tg_pt_gp_id_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
|
|
|
|
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_tg_pt_gp_tg_pt_gp_id_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
|
|
struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
|
|
unsigned long tg_pt_gp_id;
|
|
int ret;
|
|
|
|
ret = kstrtoul(page, 0, &tg_pt_gp_id);
|
|
if (ret < 0) {
|
|
pr_err("ALUA tg_pt_gp_id: invalid value '%s' for tg_pt_gp_id\n",
|
|
page);
|
|
return ret;
|
|
}
|
|
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;
|
|
}
|
|
|
|
static ssize_t target_tg_pt_gp_members_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
|
|
struct se_lun *lun;
|
|
ssize_t len = 0, cur_len;
|
|
unsigned char buf[TG_PT_GROUP_NAME_BUF] = { };
|
|
|
|
spin_lock(&tg_pt_gp->tg_pt_gp_lock);
|
|
list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list,
|
|
lun_tg_pt_gp_link) {
|
|
struct se_portal_group *tpg = lun->lun_tpg;
|
|
|
|
cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu"
|
|
"/%s\n", tpg->se_tpg_tfo->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;
|
|
}
|
|
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_state);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_status);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_type);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_transitioning);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_offline);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_lba_dependent);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_unavailable);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_standby);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_optimized);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_nonoptimized);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, alua_write_metadata);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, nonop_delay_msecs);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, trans_delay_msecs);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, implicit_trans_secs);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, preferred);
|
|
CONFIGFS_ATTR(target_tg_pt_gp_, tg_pt_gp_id);
|
|
CONFIGFS_ATTR_RO(target_tg_pt_gp_, members);
|
|
|
|
static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = {
|
|
&target_tg_pt_gp_attr_alua_access_state,
|
|
&target_tg_pt_gp_attr_alua_access_status,
|
|
&target_tg_pt_gp_attr_alua_access_type,
|
|
&target_tg_pt_gp_attr_alua_support_transitioning,
|
|
&target_tg_pt_gp_attr_alua_support_offline,
|
|
&target_tg_pt_gp_attr_alua_support_lba_dependent,
|
|
&target_tg_pt_gp_attr_alua_support_unavailable,
|
|
&target_tg_pt_gp_attr_alua_support_standby,
|
|
&target_tg_pt_gp_attr_alua_support_active_nonoptimized,
|
|
&target_tg_pt_gp_attr_alua_support_active_optimized,
|
|
&target_tg_pt_gp_attr_alua_write_metadata,
|
|
&target_tg_pt_gp_attr_nonop_delay_msecs,
|
|
&target_tg_pt_gp_attr_trans_delay_msecs,
|
|
&target_tg_pt_gp_attr_implicit_trans_secs,
|
|
&target_tg_pt_gp_attr_preferred,
|
|
&target_tg_pt_gp_attr_tg_pt_gp_id,
|
|
&target_tg_pt_gp_attr_members,
|
|
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,
|
|
};
|
|
|
|
static const 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 tb_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,
|
|
};
|
|
|
|
TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL);
|
|
|
|
/* End functions for struct config_item_type tb_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 const 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 tb_dev_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,
|
|
};
|
|
|
|
TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL);
|
|
|
|
/* End functions for struct config_item_type tb_dev_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 config_item *hba_ci = &group->cg_item;
|
|
struct se_hba *hba = item_to_hba(hba_ci);
|
|
struct target_backend *tb = hba->backend;
|
|
struct se_device *dev;
|
|
int errno = -ENOMEM, ret;
|
|
|
|
ret = mutex_lock_interruptible(&hba->hba_access_mutex);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
dev = target_alloc_device(hba, name);
|
|
if (!dev)
|
|
goto out_unlock;
|
|
|
|
config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit);
|
|
|
|
config_group_init_type_name(&dev->dev_action_group, "action",
|
|
&tb->tb_dev_action_cit);
|
|
configfs_add_default_group(&dev->dev_action_group, &dev->dev_group);
|
|
|
|
config_group_init_type_name(&dev->dev_attrib.da_group, "attrib",
|
|
&tb->tb_dev_attrib_cit);
|
|
configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group);
|
|
|
|
config_group_init_type_name(&dev->dev_pr_group, "pr",
|
|
&tb->tb_dev_pr_cit);
|
|
configfs_add_default_group(&dev->dev_pr_group, &dev->dev_group);
|
|
|
|
config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn",
|
|
&tb->tb_dev_wwn_cit);
|
|
configfs_add_default_group(&dev->t10_wwn.t10_wwn_group,
|
|
&dev->dev_group);
|
|
|
|
config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group,
|
|
"alua", &tb->tb_dev_alua_tg_pt_gps_cit);
|
|
configfs_add_default_group(&dev->t10_alua.alua_tg_pt_gps_group,
|
|
&dev->dev_group);
|
|
|
|
config_group_init_type_name(&dev->dev_stat_grps.stat_group,
|
|
"statistics", &tb->tb_dev_stat_cit);
|
|
configfs_add_default_group(&dev->dev_stat_grps.stat_group,
|
|
&dev->dev_group);
|
|
|
|
/*
|
|
* Add core/$HBA/$DEV/alua/default_tg_pt_gp
|
|
*/
|
|
tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1);
|
|
if (!tg_pt_gp)
|
|
goto out_free_device;
|
|
dev->t10_alua.default_tg_pt_gp = tg_pt_gp;
|
|
|
|
config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group,
|
|
"default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit);
|
|
configfs_add_default_group(&tg_pt_gp->tg_pt_gp_group,
|
|
&dev->t10_alua.alua_tg_pt_gps_group);
|
|
|
|
/*
|
|
* Add core/$HBA/$DEV/statistics/ default groups
|
|
*/
|
|
target_stat_setup_dev_default_groups(dev);
|
|
|
|
mutex_unlock(&hba->hba_access_mutex);
|
|
return &dev->dev_group;
|
|
|
|
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;
|
|
|
|
hba = item_to_hba(&dev->se_hba->hba_group.cg_item);
|
|
|
|
mutex_lock(&hba->hba_access_mutex);
|
|
|
|
configfs_remove_default_groups(&dev->dev_stat_grps.stat_group);
|
|
configfs_remove_default_groups(&dev->t10_alua.alua_tg_pt_gps_group);
|
|
|
|
/*
|
|
* 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;
|
|
|
|
configfs_remove_default_groups(dev_cg);
|
|
|
|
/*
|
|
* 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,
|
|
};
|
|
|
|
|
|
static inline struct se_hba *to_hba(struct config_item *item)
|
|
{
|
|
return container_of(to_config_group(item), struct se_hba, hba_group);
|
|
}
|
|
|
|
static ssize_t target_hba_info_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_hba *hba = to_hba(item);
|
|
|
|
return sprintf(page, "HBA Index: %d plugin: %s version: %s\n",
|
|
hba->hba_id, hba->backend->ops->name,
|
|
TARGET_CORE_VERSION);
|
|
}
|
|
|
|
static ssize_t target_hba_mode_show(struct config_item *item, char *page)
|
|
{
|
|
struct se_hba *hba = to_hba(item);
|
|
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_hba_mode_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_hba *hba = to_hba(item);
|
|
unsigned long mode_flag;
|
|
int ret;
|
|
|
|
if (hba->backend->ops->pmode_enable_hba == NULL)
|
|
return -EINVAL;
|
|
|
|
ret = kstrtoul(page, 0, &mode_flag);
|
|
if (ret < 0) {
|
|
pr_err("Unable to extract hba mode flag: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
if (hba->dev_count) {
|
|
pr_err("Unable to set hba_mode with active devices\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = hba->backend->ops->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;
|
|
}
|
|
|
|
CONFIGFS_ATTR_RO(target_, hba_info);
|
|
CONFIGFS_ATTR(target_, hba_mode);
|
|
|
|
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_attr_hba_info,
|
|
&target_attr_hba_mode,
|
|
NULL,
|
|
};
|
|
|
|
static struct configfs_item_operations target_core_hba_item_ops = {
|
|
.release = target_core_hba_release,
|
|
};
|
|
|
|
static const 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;
|
|
|
|
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 = kstrtoul(str, 0, &plugin_dep_id);
|
|
if (ret < 0) {
|
|
pr_err("kstrtoul() returned %d for"
|
|
" plugin_dep_id\n", ret);
|
|
return ERR_PTR(ret);
|
|
}
|
|
/*
|
|
* 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 const 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 */
|
|
|
|
void target_setup_backend_cits(struct target_backend *tb)
|
|
{
|
|
target_core_setup_dev_cit(tb);
|
|
target_core_setup_dev_action_cit(tb);
|
|
target_core_setup_dev_attrib_cit(tb);
|
|
target_core_setup_dev_pr_cit(tb);
|
|
target_core_setup_dev_wwn_cit(tb);
|
|
target_core_setup_dev_alua_tg_pt_gps_cit(tb);
|
|
target_core_setup_dev_stat_cit(tb);
|
|
}
|
|
|
|
static void target_init_dbroot(void)
|
|
{
|
|
struct file *fp;
|
|
|
|
snprintf(db_root_stage, DB_ROOT_LEN, DB_ROOT_PREFERRED);
|
|
fp = filp_open(db_root_stage, O_RDONLY, 0);
|
|
if (IS_ERR(fp)) {
|
|
pr_err("db_root: cannot open: %s\n", db_root_stage);
|
|
return;
|
|
}
|
|
if (!S_ISDIR(file_inode(fp)->i_mode)) {
|
|
filp_close(fp, NULL);
|
|
pr_err("db_root: not a valid directory: %s\n", db_root_stage);
|
|
return;
|
|
}
|
|
filp_close(fp, NULL);
|
|
|
|
strncpy(db_root, db_root_stage, DB_ROOT_LEN);
|
|
pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root);
|
|
}
|
|
|
|
static int __init target_core_init_configfs(void)
|
|
{
|
|
struct configfs_subsystem *subsys = &target_core_fabrics;
|
|
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);
|
|
|
|
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.
|
|
*/
|
|
config_group_init_type_name(&target_core_hbagroup, "core",
|
|
&target_core_cit);
|
|
configfs_add_default_group(&target_core_hbagroup, &subsys->su_group);
|
|
|
|
/*
|
|
* Create ALUA infrastructure under /sys/kernel/config/target/core/alua/
|
|
*/
|
|
config_group_init_type_name(&alua_group, "alua", &target_core_alua_cit);
|
|
configfs_add_default_group(&alua_group, &target_core_hbagroup);
|
|
|
|
/*
|
|
* Add ALUA Logical Unit Group and Target Port Group ConfigFS
|
|
* groups under /sys/kernel/config/target/core/alua/
|
|
*/
|
|
config_group_init_type_name(&alua_lu_gps_group, "lu_gps",
|
|
&target_core_alua_lu_gps_cit);
|
|
configfs_add_default_group(&alua_lu_gps_group, &alua_group);
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp",
|
|
&target_core_alua_lu_gp_cit);
|
|
configfs_add_default_group(&lu_gp->lu_gp_group, &alua_lu_gps_group);
|
|
|
|
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_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;
|
|
|
|
ret = target_xcopy_setup_pt();
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
target_init_dbroot();
|
|
|
|
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;
|
|
}
|
|
release_se_kmem_caches();
|
|
return ret;
|
|
}
|
|
|
|
static void __exit target_core_exit_configfs(void)
|
|
{
|
|
configfs_remove_default_groups(&alua_lu_gps_group);
|
|
configfs_remove_default_groups(&alua_group);
|
|
configfs_remove_default_groups(&target_core_hbagroup);
|
|
|
|
/*
|
|
* We expect subsys->su_group.default_groups to be released
|
|
* by configfs subsystem provider logic..
|
|
*/
|
|
configfs_unregister_subsystem(&target_core_fabrics);
|
|
|
|
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();
|
|
target_xcopy_release_pt();
|
|
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);
|