1c66ac9dbSNicholas Bellinger /******************************************************************************* 2c66ac9dbSNicholas Bellinger * Filename: target_core_configfs.c 3c66ac9dbSNicholas Bellinger * 4c66ac9dbSNicholas Bellinger * This file contains ConfigFS logic for the Generic Target Engine project. 5c66ac9dbSNicholas Bellinger * 64c76251eSNicholas Bellinger * (c) Copyright 2008-2013 Datera, Inc. 7c66ac9dbSNicholas Bellinger * 8c66ac9dbSNicholas Bellinger * Nicholas A. Bellinger <nab@kernel.org> 9c66ac9dbSNicholas Bellinger * 10c66ac9dbSNicholas Bellinger * based on configfs Copyright (C) 2005 Oracle. All rights reserved. 11c66ac9dbSNicholas Bellinger * 12c66ac9dbSNicholas Bellinger * This program is free software; you can redistribute it and/or modify 13c66ac9dbSNicholas Bellinger * it under the terms of the GNU General Public License as published by 14c66ac9dbSNicholas Bellinger * the Free Software Foundation; either version 2 of the License, or 15c66ac9dbSNicholas Bellinger * (at your option) any later version. 16c66ac9dbSNicholas Bellinger * 17c66ac9dbSNicholas Bellinger * This program is distributed in the hope that it will be useful, 18c66ac9dbSNicholas Bellinger * but WITHOUT ANY WARRANTY; without even the implied warranty of 19c66ac9dbSNicholas Bellinger * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20c66ac9dbSNicholas Bellinger * GNU General Public License for more details. 21c66ac9dbSNicholas Bellinger ****************************************************************************/ 22c66ac9dbSNicholas Bellinger 23c66ac9dbSNicholas Bellinger #include <linux/module.h> 24c66ac9dbSNicholas Bellinger #include <linux/moduleparam.h> 25c66ac9dbSNicholas Bellinger #include <generated/utsrelease.h> 26c66ac9dbSNicholas Bellinger #include <linux/utsname.h> 27c66ac9dbSNicholas Bellinger #include <linux/init.h> 28c66ac9dbSNicholas Bellinger #include <linux/fs.h> 29c66ac9dbSNicholas Bellinger #include <linux/namei.h> 30c66ac9dbSNicholas Bellinger #include <linux/slab.h> 31c66ac9dbSNicholas Bellinger #include <linux/types.h> 32c66ac9dbSNicholas Bellinger #include <linux/delay.h> 33c66ac9dbSNicholas Bellinger #include <linux/unistd.h> 34c66ac9dbSNicholas Bellinger #include <linux/string.h> 35c66ac9dbSNicholas Bellinger #include <linux/parser.h> 36c66ac9dbSNicholas Bellinger #include <linux/syscalls.h> 37c66ac9dbSNicholas Bellinger #include <linux/configfs.h> 38e3d6f909SAndy Grover #include <linux/spinlock.h> 39c66ac9dbSNicholas Bellinger 40c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 41c4795fb2SChristoph Hellwig #include <target/target_core_backend.h> 42c4795fb2SChristoph Hellwig #include <target/target_core_fabric.h> 43c66ac9dbSNicholas Bellinger #include <target/target_core_fabric_configfs.h> 44c66ac9dbSNicholas Bellinger #include <target/target_core_configfs.h> 45c66ac9dbSNicholas Bellinger #include <target/configfs_macros.h> 46c66ac9dbSNicholas Bellinger 47e26d99aeSChristoph Hellwig #include "target_core_internal.h" 48c66ac9dbSNicholas Bellinger #include "target_core_alua.h" 49c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 50c66ac9dbSNicholas Bellinger #include "target_core_rd.h" 51f99715acSNicholas Bellinger #include "target_core_xcopy.h" 52c66ac9dbSNicholas Bellinger 5373112edcSNicholas Bellinger #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ 5473112edcSNicholas Bellinger static void target_core_setup_##_name##_cit(struct se_subsystem_api *sa) \ 5573112edcSNicholas Bellinger { \ 5673112edcSNicholas Bellinger struct target_backend_cits *tbc = &sa->tb_cits; \ 5773112edcSNicholas Bellinger struct config_item_type *cit = &tbc->tb_##_name##_cit; \ 5873112edcSNicholas Bellinger \ 5973112edcSNicholas Bellinger cit->ct_item_ops = _item_ops; \ 6073112edcSNicholas Bellinger cit->ct_group_ops = _group_ops; \ 6173112edcSNicholas Bellinger cit->ct_attrs = _attrs; \ 6273112edcSNicholas Bellinger cit->ct_owner = sa->owner; \ 6373112edcSNicholas Bellinger pr_debug("Setup generic %s\n", __stringify(_name)); \ 6473112edcSNicholas Bellinger } 6573112edcSNicholas Bellinger 66e3d6f909SAndy Grover extern struct t10_alua_lu_gp *default_lu_gp; 67e3d6f909SAndy Grover 68d0f474e5SRoland Dreier static LIST_HEAD(g_tf_list); 69d0f474e5SRoland Dreier static DEFINE_MUTEX(g_tf_lock); 70c66ac9dbSNicholas Bellinger 71c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute { 72c66ac9dbSNicholas Bellinger struct configfs_attribute attr; 73c66ac9dbSNicholas Bellinger ssize_t (*show)(void *, char *); 74c66ac9dbSNicholas Bellinger ssize_t (*store)(void *, const char *, size_t); 75c66ac9dbSNicholas Bellinger }; 76c66ac9dbSNicholas Bellinger 77e3d6f909SAndy Grover static struct config_group target_core_hbagroup; 78e3d6f909SAndy Grover static struct config_group alua_group; 79e3d6f909SAndy Grover static struct config_group alua_lu_gps_group; 80e3d6f909SAndy Grover 81c66ac9dbSNicholas Bellinger static inline struct se_hba * 82c66ac9dbSNicholas Bellinger item_to_hba(struct config_item *item) 83c66ac9dbSNicholas Bellinger { 84c66ac9dbSNicholas Bellinger return container_of(to_config_group(item), struct se_hba, hba_group); 85c66ac9dbSNicholas Bellinger } 86c66ac9dbSNicholas Bellinger 87c66ac9dbSNicholas Bellinger /* 88c66ac9dbSNicholas Bellinger * Attributes for /sys/kernel/config/target/ 89c66ac9dbSNicholas Bellinger */ 90c66ac9dbSNicholas Bellinger static ssize_t target_core_attr_show(struct config_item *item, 91c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 92c66ac9dbSNicholas Bellinger char *page) 93c66ac9dbSNicholas Bellinger { 94c66ac9dbSNicholas Bellinger return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" 95c66ac9dbSNicholas Bellinger " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, 96c66ac9dbSNicholas Bellinger utsname()->sysname, utsname()->machine); 97c66ac9dbSNicholas Bellinger } 98c66ac9dbSNicholas Bellinger 99c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_fabric_item_ops = { 100c66ac9dbSNicholas Bellinger .show_attribute = target_core_attr_show, 101c66ac9dbSNicholas Bellinger }; 102c66ac9dbSNicholas Bellinger 103c66ac9dbSNicholas Bellinger static struct configfs_attribute target_core_item_attr_version = { 104c66ac9dbSNicholas Bellinger .ca_owner = THIS_MODULE, 105c66ac9dbSNicholas Bellinger .ca_name = "version", 106c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO, 107c66ac9dbSNicholas Bellinger }; 108c66ac9dbSNicholas Bellinger 109c66ac9dbSNicholas Bellinger static struct target_fabric_configfs *target_core_get_fabric( 110c66ac9dbSNicholas Bellinger const char *name) 111c66ac9dbSNicholas Bellinger { 112c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 113c66ac9dbSNicholas Bellinger 1146708bb27SAndy Grover if (!name) 115c66ac9dbSNicholas Bellinger return NULL; 116c66ac9dbSNicholas Bellinger 117c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 118c66ac9dbSNicholas Bellinger list_for_each_entry(tf, &g_tf_list, tf_list) { 1196708bb27SAndy Grover if (!strcmp(tf->tf_name, name)) { 120c66ac9dbSNicholas Bellinger atomic_inc(&tf->tf_access_cnt); 121c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 122c66ac9dbSNicholas Bellinger return tf; 123c66ac9dbSNicholas Bellinger } 124c66ac9dbSNicholas Bellinger } 125c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 126c66ac9dbSNicholas Bellinger 127c66ac9dbSNicholas Bellinger return NULL; 128c66ac9dbSNicholas Bellinger } 129c66ac9dbSNicholas Bellinger 130c66ac9dbSNicholas Bellinger /* 131c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->make_group() 132c66ac9dbSNicholas Bellinger */ 133c66ac9dbSNicholas Bellinger static struct config_group *target_core_register_fabric( 134c66ac9dbSNicholas Bellinger struct config_group *group, 135c66ac9dbSNicholas Bellinger const char *name) 136c66ac9dbSNicholas Bellinger { 137c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 138c66ac9dbSNicholas Bellinger int ret; 139c66ac9dbSNicholas Bellinger 1406708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" 141c66ac9dbSNicholas Bellinger " %s\n", group, name); 142e7b7af6eSRoland Dreier 143e7b7af6eSRoland Dreier tf = target_core_get_fabric(name); 144e7b7af6eSRoland Dreier if (!tf) { 145e7b7af6eSRoland Dreier pr_err("target_core_register_fabric() trying autoload for %s\n", 146e7b7af6eSRoland Dreier name); 147e7b7af6eSRoland Dreier 148c66ac9dbSNicholas Bellinger /* 149c66ac9dbSNicholas Bellinger * Below are some hardcoded request_module() calls to automatically 150c66ac9dbSNicholas Bellinger * local fabric modules when the following is called: 151c66ac9dbSNicholas Bellinger * 152c66ac9dbSNicholas Bellinger * mkdir -p /sys/kernel/config/target/$MODULE_NAME 153c66ac9dbSNicholas Bellinger * 154c66ac9dbSNicholas Bellinger * Note that this does not limit which TCM fabric module can be 155c66ac9dbSNicholas Bellinger * registered, but simply provids auto loading logic for modules with 156c66ac9dbSNicholas Bellinger * mkdir(2) system calls with known TCM fabric modules. 157c66ac9dbSNicholas Bellinger */ 158e7b7af6eSRoland Dreier 1596708bb27SAndy Grover if (!strncmp(name, "iscsi", 5)) { 160c66ac9dbSNicholas Bellinger /* 161c66ac9dbSNicholas Bellinger * Automatically load the LIO Target fabric module when the 162c66ac9dbSNicholas Bellinger * following is called: 163c66ac9dbSNicholas Bellinger * 164c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/iscsi 165c66ac9dbSNicholas Bellinger */ 166c66ac9dbSNicholas Bellinger ret = request_module("iscsi_target_mod"); 167c66ac9dbSNicholas Bellinger if (ret < 0) { 1686708bb27SAndy Grover pr_err("request_module() failed for" 169c66ac9dbSNicholas Bellinger " iscsi_target_mod.ko: %d\n", ret); 170c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 171c66ac9dbSNicholas Bellinger } 1726708bb27SAndy Grover } else if (!strncmp(name, "loopback", 8)) { 173c66ac9dbSNicholas Bellinger /* 174c66ac9dbSNicholas Bellinger * Automatically load the tcm_loop fabric module when the 175c66ac9dbSNicholas Bellinger * following is called: 176c66ac9dbSNicholas Bellinger * 177c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/loopback 178c66ac9dbSNicholas Bellinger */ 179c66ac9dbSNicholas Bellinger ret = request_module("tcm_loop"); 180c66ac9dbSNicholas Bellinger if (ret < 0) { 1816708bb27SAndy Grover pr_err("request_module() failed for" 182c66ac9dbSNicholas Bellinger " tcm_loop.ko: %d\n", ret); 183c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 184c66ac9dbSNicholas Bellinger } 185c66ac9dbSNicholas Bellinger } 186c66ac9dbSNicholas Bellinger 187c66ac9dbSNicholas Bellinger tf = target_core_get_fabric(name); 188e7b7af6eSRoland Dreier } 189e7b7af6eSRoland Dreier 1906708bb27SAndy Grover if (!tf) { 1916708bb27SAndy Grover pr_err("target_core_get_fabric() failed for %s\n", 192c66ac9dbSNicholas Bellinger name); 193c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 194c66ac9dbSNicholas Bellinger } 1956708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" 196c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 197c66ac9dbSNicholas Bellinger /* 198c66ac9dbSNicholas Bellinger * On a successful target_core_get_fabric() look, the returned 199c66ac9dbSNicholas Bellinger * struct target_fabric_configfs *tf will contain a usage reference. 200c66ac9dbSNicholas Bellinger */ 2016708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", 202d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_wwn_cit); 203c66ac9dbSNicholas Bellinger 204c66ac9dbSNicholas Bellinger tf->tf_group.default_groups = tf->tf_default_groups; 205c66ac9dbSNicholas Bellinger tf->tf_group.default_groups[0] = &tf->tf_disc_group; 206c66ac9dbSNicholas Bellinger tf->tf_group.default_groups[1] = NULL; 207c66ac9dbSNicholas Bellinger 208c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_group, name, 209d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_wwn_cit); 210c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 211d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_discovery_cit); 212c66ac9dbSNicholas Bellinger 2136708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" 214c66ac9dbSNicholas Bellinger " %s\n", tf->tf_group.cg_item.ci_name); 215c66ac9dbSNicholas Bellinger /* 216c66ac9dbSNicholas Bellinger * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() 217c66ac9dbSNicholas Bellinger */ 218c66ac9dbSNicholas Bellinger tf->tf_ops.tf_subsys = tf->tf_subsys; 219c66ac9dbSNicholas Bellinger tf->tf_fabric = &tf->tf_group.cg_item; 2206708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" 221c66ac9dbSNicholas Bellinger " for %s\n", name); 222c66ac9dbSNicholas Bellinger 223c66ac9dbSNicholas Bellinger return &tf->tf_group; 224c66ac9dbSNicholas Bellinger } 225c66ac9dbSNicholas Bellinger 226c66ac9dbSNicholas Bellinger /* 227c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->drop_item() 228c66ac9dbSNicholas Bellinger */ 229c66ac9dbSNicholas Bellinger static void target_core_deregister_fabric( 230c66ac9dbSNicholas Bellinger struct config_group *group, 231c66ac9dbSNicholas Bellinger struct config_item *item) 232c66ac9dbSNicholas Bellinger { 233c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf = container_of( 234c66ac9dbSNicholas Bellinger to_config_group(item), struct target_fabric_configfs, tf_group); 235c66ac9dbSNicholas Bellinger struct config_group *tf_group; 236c66ac9dbSNicholas Bellinger struct config_item *df_item; 237c66ac9dbSNicholas Bellinger int i; 238c66ac9dbSNicholas Bellinger 2396708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" 240c66ac9dbSNicholas Bellinger " tf list\n", config_item_name(item)); 241c66ac9dbSNicholas Bellinger 2426708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" 243c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 244c66ac9dbSNicholas Bellinger atomic_dec(&tf->tf_access_cnt); 245c66ac9dbSNicholas Bellinger 2466708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" 247c66ac9dbSNicholas Bellinger " tf->tf_fabric for %s\n", tf->tf_name); 248c66ac9dbSNicholas Bellinger tf->tf_fabric = NULL; 249c66ac9dbSNicholas Bellinger 2506708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" 251c66ac9dbSNicholas Bellinger " %s\n", config_item_name(item)); 252c66ac9dbSNicholas Bellinger 253c66ac9dbSNicholas Bellinger tf_group = &tf->tf_group; 254c66ac9dbSNicholas Bellinger for (i = 0; tf_group->default_groups[i]; i++) { 255c66ac9dbSNicholas Bellinger df_item = &tf_group->default_groups[i]->cg_item; 256c66ac9dbSNicholas Bellinger tf_group->default_groups[i] = NULL; 257c66ac9dbSNicholas Bellinger config_item_put(df_item); 258c66ac9dbSNicholas Bellinger } 259c66ac9dbSNicholas Bellinger config_item_put(item); 260c66ac9dbSNicholas Bellinger } 261c66ac9dbSNicholas Bellinger 262c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_fabric_group_ops = { 263c66ac9dbSNicholas Bellinger .make_group = &target_core_register_fabric, 264c66ac9dbSNicholas Bellinger .drop_item = &target_core_deregister_fabric, 265c66ac9dbSNicholas Bellinger }; 266c66ac9dbSNicholas Bellinger 267c66ac9dbSNicholas Bellinger /* 268c66ac9dbSNicholas Bellinger * All item attributes appearing in /sys/kernel/target/ appear here. 269c66ac9dbSNicholas Bellinger */ 270c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_fabric_item_attrs[] = { 271c66ac9dbSNicholas Bellinger &target_core_item_attr_version, 272c66ac9dbSNicholas Bellinger NULL, 273c66ac9dbSNicholas Bellinger }; 274c66ac9dbSNicholas Bellinger 275c66ac9dbSNicholas Bellinger /* 276c66ac9dbSNicholas Bellinger * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ 277c66ac9dbSNicholas Bellinger */ 278c66ac9dbSNicholas Bellinger static struct config_item_type target_core_fabrics_item = { 279c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_fabric_item_ops, 280c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_fabric_group_ops, 281c66ac9dbSNicholas Bellinger .ct_attrs = target_core_fabric_item_attrs, 282c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 283c66ac9dbSNicholas Bellinger }; 284c66ac9dbSNicholas Bellinger 285c66ac9dbSNicholas Bellinger static struct configfs_subsystem target_core_fabrics = { 286c66ac9dbSNicholas Bellinger .su_group = { 287c66ac9dbSNicholas Bellinger .cg_item = { 288c66ac9dbSNicholas Bellinger .ci_namebuf = "target", 289c66ac9dbSNicholas Bellinger .ci_type = &target_core_fabrics_item, 290c66ac9dbSNicholas Bellinger }, 291c66ac9dbSNicholas Bellinger }, 292c66ac9dbSNicholas Bellinger }; 293c66ac9dbSNicholas Bellinger 29456d128faSNicholas Bellinger struct configfs_subsystem *target_core_subsystem[] = { 295c66ac9dbSNicholas Bellinger &target_core_fabrics, 296c66ac9dbSNicholas Bellinger NULL, 297c66ac9dbSNicholas Bellinger }; 298c66ac9dbSNicholas Bellinger 299c66ac9dbSNicholas Bellinger /*############################################################################## 300c66ac9dbSNicholas Bellinger // Start functions called by external Target Fabrics Modules 301c66ac9dbSNicholas Bellinger //############################################################################*/ 302c66ac9dbSNicholas Bellinger 303c66ac9dbSNicholas Bellinger /* 304c66ac9dbSNicholas Bellinger * First function called by fabric modules to: 305c66ac9dbSNicholas Bellinger * 306c66ac9dbSNicholas Bellinger * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. 307c66ac9dbSNicholas Bellinger * 2) Add struct target_fabric_configfs to g_tf_list 308c66ac9dbSNicholas Bellinger * 3) Return struct target_fabric_configfs to fabric module to be passed 309c66ac9dbSNicholas Bellinger * into target_fabric_configfs_register(). 310c66ac9dbSNicholas Bellinger */ 311c66ac9dbSNicholas Bellinger struct target_fabric_configfs *target_fabric_configfs_init( 312c66ac9dbSNicholas Bellinger struct module *fabric_mod, 313c66ac9dbSNicholas Bellinger const char *name) 314c66ac9dbSNicholas Bellinger { 315c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 316c66ac9dbSNicholas Bellinger 317c66ac9dbSNicholas Bellinger if (!(name)) { 3186708bb27SAndy Grover pr_err("Unable to locate passed fabric name\n"); 319e3d6f909SAndy Grover return ERR_PTR(-EINVAL); 320c66ac9dbSNicholas Bellinger } 32160d645a4SDan Carpenter if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { 3226708bb27SAndy Grover pr_err("Passed name: %s exceeds TARGET_FABRIC" 323c66ac9dbSNicholas Bellinger "_NAME_SIZE\n", name); 324e3d6f909SAndy Grover return ERR_PTR(-EINVAL); 325c66ac9dbSNicholas Bellinger } 326c66ac9dbSNicholas Bellinger 327c66ac9dbSNicholas Bellinger tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); 3286708bb27SAndy Grover if (!tf) 329e3d6f909SAndy Grover return ERR_PTR(-ENOMEM); 330c66ac9dbSNicholas Bellinger 331c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&tf->tf_list); 332c66ac9dbSNicholas Bellinger atomic_set(&tf->tf_access_cnt, 0); 333c66ac9dbSNicholas Bellinger /* 334c66ac9dbSNicholas Bellinger * Setup the default generic struct config_item_type's (cits) in 335c66ac9dbSNicholas Bellinger * struct target_fabric_configfs->tf_cit_tmpl 336c66ac9dbSNicholas Bellinger */ 337c66ac9dbSNicholas Bellinger tf->tf_module = fabric_mod; 338c66ac9dbSNicholas Bellinger target_fabric_setup_cits(tf); 339c66ac9dbSNicholas Bellinger 340c66ac9dbSNicholas Bellinger tf->tf_subsys = target_core_subsystem[0]; 341c66ac9dbSNicholas Bellinger snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); 342c66ac9dbSNicholas Bellinger 343c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 344c66ac9dbSNicholas Bellinger list_add_tail(&tf->tf_list, &g_tf_list); 345c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 346c66ac9dbSNicholas Bellinger 3476708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" 348c66ac9dbSNicholas Bellinger ">>>>>>>>>>>>>>\n"); 3496708bb27SAndy Grover pr_debug("Initialized struct target_fabric_configfs: %p for" 350c66ac9dbSNicholas Bellinger " %s\n", tf, tf->tf_name); 351c66ac9dbSNicholas Bellinger return tf; 352c66ac9dbSNicholas Bellinger } 353c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_init); 354c66ac9dbSNicholas Bellinger 355c66ac9dbSNicholas Bellinger /* 356c66ac9dbSNicholas Bellinger * Called by fabric plugins after FAILED target_fabric_configfs_register() call. 357c66ac9dbSNicholas Bellinger */ 358c66ac9dbSNicholas Bellinger void target_fabric_configfs_free( 359c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 360c66ac9dbSNicholas Bellinger { 361c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 362c66ac9dbSNicholas Bellinger list_del(&tf->tf_list); 363c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 364c66ac9dbSNicholas Bellinger 365c66ac9dbSNicholas Bellinger kfree(tf); 366c66ac9dbSNicholas Bellinger } 367c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_free); 368c66ac9dbSNicholas Bellinger 369c66ac9dbSNicholas Bellinger /* 370c66ac9dbSNicholas Bellinger * Perform a sanity check of the passed tf->tf_ops before completing 371c66ac9dbSNicholas Bellinger * TCM fabric module registration. 372c66ac9dbSNicholas Bellinger */ 373c66ac9dbSNicholas Bellinger static int target_fabric_tf_ops_check( 374c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 375c66ac9dbSNicholas Bellinger { 376c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo = &tf->tf_ops; 377c66ac9dbSNicholas Bellinger 3786708bb27SAndy Grover if (!tfo->get_fabric_name) { 3796708bb27SAndy Grover pr_err("Missing tfo->get_fabric_name()\n"); 380c66ac9dbSNicholas Bellinger return -EINVAL; 381c66ac9dbSNicholas Bellinger } 3826708bb27SAndy Grover if (!tfo->get_fabric_proto_ident) { 3836708bb27SAndy Grover pr_err("Missing tfo->get_fabric_proto_ident()\n"); 384c66ac9dbSNicholas Bellinger return -EINVAL; 385c66ac9dbSNicholas Bellinger } 3866708bb27SAndy Grover if (!tfo->tpg_get_wwn) { 3876708bb27SAndy Grover pr_err("Missing tfo->tpg_get_wwn()\n"); 388c66ac9dbSNicholas Bellinger return -EINVAL; 389c66ac9dbSNicholas Bellinger } 3906708bb27SAndy Grover if (!tfo->tpg_get_tag) { 3916708bb27SAndy Grover pr_err("Missing tfo->tpg_get_tag()\n"); 392c66ac9dbSNicholas Bellinger return -EINVAL; 393c66ac9dbSNicholas Bellinger } 3946708bb27SAndy Grover if (!tfo->tpg_get_default_depth) { 3956708bb27SAndy Grover pr_err("Missing tfo->tpg_get_default_depth()\n"); 396c66ac9dbSNicholas Bellinger return -EINVAL; 397c66ac9dbSNicholas Bellinger } 3986708bb27SAndy Grover if (!tfo->tpg_get_pr_transport_id) { 3996708bb27SAndy Grover pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); 400c66ac9dbSNicholas Bellinger return -EINVAL; 401c66ac9dbSNicholas Bellinger } 4026708bb27SAndy Grover if (!tfo->tpg_get_pr_transport_id_len) { 4036708bb27SAndy Grover pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); 404c66ac9dbSNicholas Bellinger return -EINVAL; 405c66ac9dbSNicholas Bellinger } 4066708bb27SAndy Grover if (!tfo->tpg_check_demo_mode) { 4076708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode()\n"); 408c66ac9dbSNicholas Bellinger return -EINVAL; 409c66ac9dbSNicholas Bellinger } 4106708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_cache) { 4116708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); 412c66ac9dbSNicholas Bellinger return -EINVAL; 413c66ac9dbSNicholas Bellinger } 4146708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_write_protect) { 4156708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); 416c66ac9dbSNicholas Bellinger return -EINVAL; 417c66ac9dbSNicholas Bellinger } 4186708bb27SAndy Grover if (!tfo->tpg_check_prod_mode_write_protect) { 4196708bb27SAndy Grover pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); 420c66ac9dbSNicholas Bellinger return -EINVAL; 421c66ac9dbSNicholas Bellinger } 4226708bb27SAndy Grover if (!tfo->tpg_alloc_fabric_acl) { 4236708bb27SAndy Grover pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); 424c66ac9dbSNicholas Bellinger return -EINVAL; 425c66ac9dbSNicholas Bellinger } 4266708bb27SAndy Grover if (!tfo->tpg_release_fabric_acl) { 4276708bb27SAndy Grover pr_err("Missing tfo->tpg_release_fabric_acl()\n"); 428c66ac9dbSNicholas Bellinger return -EINVAL; 429c66ac9dbSNicholas Bellinger } 4306708bb27SAndy Grover if (!tfo->tpg_get_inst_index) { 4316708bb27SAndy Grover pr_err("Missing tfo->tpg_get_inst_index()\n"); 432c66ac9dbSNicholas Bellinger return -EINVAL; 433c66ac9dbSNicholas Bellinger } 43435462975SChristoph Hellwig if (!tfo->release_cmd) { 4356708bb27SAndy Grover pr_err("Missing tfo->release_cmd()\n"); 436c66ac9dbSNicholas Bellinger return -EINVAL; 437c66ac9dbSNicholas Bellinger } 4386708bb27SAndy Grover if (!tfo->shutdown_session) { 4396708bb27SAndy Grover pr_err("Missing tfo->shutdown_session()\n"); 440c66ac9dbSNicholas Bellinger return -EINVAL; 441c66ac9dbSNicholas Bellinger } 4426708bb27SAndy Grover if (!tfo->close_session) { 4436708bb27SAndy Grover pr_err("Missing tfo->close_session()\n"); 444c66ac9dbSNicholas Bellinger return -EINVAL; 445c66ac9dbSNicholas Bellinger } 4466708bb27SAndy Grover if (!tfo->sess_get_index) { 4476708bb27SAndy Grover pr_err("Missing tfo->sess_get_index()\n"); 448c66ac9dbSNicholas Bellinger return -EINVAL; 449c66ac9dbSNicholas Bellinger } 4506708bb27SAndy Grover if (!tfo->write_pending) { 4516708bb27SAndy Grover pr_err("Missing tfo->write_pending()\n"); 452c66ac9dbSNicholas Bellinger return -EINVAL; 453c66ac9dbSNicholas Bellinger } 4546708bb27SAndy Grover if (!tfo->write_pending_status) { 4556708bb27SAndy Grover pr_err("Missing tfo->write_pending_status()\n"); 456c66ac9dbSNicholas Bellinger return -EINVAL; 457c66ac9dbSNicholas Bellinger } 4586708bb27SAndy Grover if (!tfo->set_default_node_attributes) { 4596708bb27SAndy Grover pr_err("Missing tfo->set_default_node_attributes()\n"); 460c66ac9dbSNicholas Bellinger return -EINVAL; 461c66ac9dbSNicholas Bellinger } 4626708bb27SAndy Grover if (!tfo->get_task_tag) { 4636708bb27SAndy Grover pr_err("Missing tfo->get_task_tag()\n"); 464c66ac9dbSNicholas Bellinger return -EINVAL; 465c66ac9dbSNicholas Bellinger } 4666708bb27SAndy Grover if (!tfo->get_cmd_state) { 4676708bb27SAndy Grover pr_err("Missing tfo->get_cmd_state()\n"); 468c66ac9dbSNicholas Bellinger return -EINVAL; 469c66ac9dbSNicholas Bellinger } 4706708bb27SAndy Grover if (!tfo->queue_data_in) { 4716708bb27SAndy Grover pr_err("Missing tfo->queue_data_in()\n"); 472c66ac9dbSNicholas Bellinger return -EINVAL; 473c66ac9dbSNicholas Bellinger } 4746708bb27SAndy Grover if (!tfo->queue_status) { 4756708bb27SAndy Grover pr_err("Missing tfo->queue_status()\n"); 476c66ac9dbSNicholas Bellinger return -EINVAL; 477c66ac9dbSNicholas Bellinger } 4786708bb27SAndy Grover if (!tfo->queue_tm_rsp) { 4796708bb27SAndy Grover pr_err("Missing tfo->queue_tm_rsp()\n"); 480c66ac9dbSNicholas Bellinger return -EINVAL; 481c66ac9dbSNicholas Bellinger } 482131e6abcSNicholas Bellinger if (!tfo->aborted_task) { 483131e6abcSNicholas Bellinger pr_err("Missing tfo->aborted_task()\n"); 484131e6abcSNicholas Bellinger return -EINVAL; 485131e6abcSNicholas Bellinger } 486c66ac9dbSNicholas Bellinger /* 487c66ac9dbSNicholas Bellinger * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 488c66ac9dbSNicholas Bellinger * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 489c66ac9dbSNicholas Bellinger * target_core_fabric_configfs.c WWN+TPG group context code. 490c66ac9dbSNicholas Bellinger */ 4916708bb27SAndy Grover if (!tfo->fabric_make_wwn) { 4926708bb27SAndy Grover pr_err("Missing tfo->fabric_make_wwn()\n"); 493c66ac9dbSNicholas Bellinger return -EINVAL; 494c66ac9dbSNicholas Bellinger } 4956708bb27SAndy Grover if (!tfo->fabric_drop_wwn) { 4966708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_wwn()\n"); 497c66ac9dbSNicholas Bellinger return -EINVAL; 498c66ac9dbSNicholas Bellinger } 4996708bb27SAndy Grover if (!tfo->fabric_make_tpg) { 5006708bb27SAndy Grover pr_err("Missing tfo->fabric_make_tpg()\n"); 501c66ac9dbSNicholas Bellinger return -EINVAL; 502c66ac9dbSNicholas Bellinger } 5036708bb27SAndy Grover if (!tfo->fabric_drop_tpg) { 5046708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_tpg()\n"); 505c66ac9dbSNicholas Bellinger return -EINVAL; 506c66ac9dbSNicholas Bellinger } 507c66ac9dbSNicholas Bellinger 508c66ac9dbSNicholas Bellinger return 0; 509c66ac9dbSNicholas Bellinger } 510c66ac9dbSNicholas Bellinger 511c66ac9dbSNicholas Bellinger /* 512c66ac9dbSNicholas Bellinger * Called 2nd from fabric module with returned parameter of 513c66ac9dbSNicholas Bellinger * struct target_fabric_configfs * from target_fabric_configfs_init(). 514c66ac9dbSNicholas Bellinger * 515c66ac9dbSNicholas Bellinger * Upon a successful registration, the new fabric's struct config_item is 516c66ac9dbSNicholas Bellinger * return. Also, a pointer to this struct is set in the passed 517c66ac9dbSNicholas Bellinger * struct target_fabric_configfs. 518c66ac9dbSNicholas Bellinger */ 519c66ac9dbSNicholas Bellinger int target_fabric_configfs_register( 520c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 521c66ac9dbSNicholas Bellinger { 522c66ac9dbSNicholas Bellinger int ret; 523c66ac9dbSNicholas Bellinger 5246708bb27SAndy Grover if (!tf) { 5256708bb27SAndy Grover pr_err("Unable to locate target_fabric_configfs" 526c66ac9dbSNicholas Bellinger " pointer\n"); 527c66ac9dbSNicholas Bellinger return -EINVAL; 528c66ac9dbSNicholas Bellinger } 5296708bb27SAndy Grover if (!tf->tf_subsys) { 5306708bb27SAndy Grover pr_err("Unable to target struct config_subsystem" 531c66ac9dbSNicholas Bellinger " pointer\n"); 532c66ac9dbSNicholas Bellinger return -EINVAL; 533c66ac9dbSNicholas Bellinger } 534c66ac9dbSNicholas Bellinger ret = target_fabric_tf_ops_check(tf); 535c66ac9dbSNicholas Bellinger if (ret < 0) 536c66ac9dbSNicholas Bellinger return ret; 537c66ac9dbSNicholas Bellinger 5386708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" 539c66ac9dbSNicholas Bellinger ">>>>>>>>>>\n"); 540c66ac9dbSNicholas Bellinger return 0; 541c66ac9dbSNicholas Bellinger } 542c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_register); 543c66ac9dbSNicholas Bellinger 544c66ac9dbSNicholas Bellinger void target_fabric_configfs_deregister( 545c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 546c66ac9dbSNicholas Bellinger { 547c66ac9dbSNicholas Bellinger struct configfs_subsystem *su; 548c66ac9dbSNicholas Bellinger 5496708bb27SAndy Grover if (!tf) { 5506708bb27SAndy Grover pr_err("Unable to locate passed target_fabric_" 551c66ac9dbSNicholas Bellinger "configfs\n"); 552c66ac9dbSNicholas Bellinger return; 553c66ac9dbSNicholas Bellinger } 554c66ac9dbSNicholas Bellinger su = tf->tf_subsys; 5556708bb27SAndy Grover if (!su) { 5566708bb27SAndy Grover pr_err("Unable to locate passed tf->tf_subsys" 557c66ac9dbSNicholas Bellinger " pointer\n"); 558c66ac9dbSNicholas Bellinger return; 559c66ac9dbSNicholas Bellinger } 5606708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" 561c66ac9dbSNicholas Bellinger ">>>>>>>>>>>>\n"); 562c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 563c66ac9dbSNicholas Bellinger if (atomic_read(&tf->tf_access_cnt)) { 564c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 5656708bb27SAndy Grover pr_err("Non zero tf->tf_access_cnt for fabric %s\n", 566c66ac9dbSNicholas Bellinger tf->tf_name); 567c66ac9dbSNicholas Bellinger BUG(); 568c66ac9dbSNicholas Bellinger } 569c66ac9dbSNicholas Bellinger list_del(&tf->tf_list); 570c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 571c66ac9dbSNicholas Bellinger 5726708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" 573c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 574c66ac9dbSNicholas Bellinger tf->tf_module = NULL; 575c66ac9dbSNicholas Bellinger tf->tf_subsys = NULL; 576c66ac9dbSNicholas Bellinger kfree(tf); 577c66ac9dbSNicholas Bellinger 5786708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" 579c66ac9dbSNicholas Bellinger ">>>>>\n"); 580c66ac9dbSNicholas Bellinger } 581c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_deregister); 582c66ac9dbSNicholas Bellinger 583c66ac9dbSNicholas Bellinger /*############################################################################## 584c66ac9dbSNicholas Bellinger // Stop functions called by external Target Fabrics Modules 585c66ac9dbSNicholas Bellinger //############################################################################*/ 586c66ac9dbSNicholas Bellinger 587f79a897eSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_attrib_cit */ 588c66ac9dbSNicholas Bellinger 589c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB_SHOW(_name) \ 590c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_show_attr_##_name( \ 591c66ac9dbSNicholas Bellinger struct se_dev_attrib *da, \ 592c66ac9dbSNicholas Bellinger char *page) \ 593c66ac9dbSNicholas Bellinger { \ 5940fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%u\n", \ 5950fd97ccfSChristoph Hellwig (u32)da->da_dev->dev_attrib._name); \ 596c66ac9dbSNicholas Bellinger } 597c66ac9dbSNicholas Bellinger 598c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB_STORE(_name) \ 599c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_store_attr_##_name( \ 600c66ac9dbSNicholas Bellinger struct se_dev_attrib *da, \ 601c66ac9dbSNicholas Bellinger const char *page, \ 602c66ac9dbSNicholas Bellinger size_t count) \ 603c66ac9dbSNicholas Bellinger { \ 604c66ac9dbSNicholas Bellinger unsigned long val; \ 605c66ac9dbSNicholas Bellinger int ret; \ 606c66ac9dbSNicholas Bellinger \ 60757103d7fSJingoo Han ret = kstrtoul(page, 0, &val); \ 608c66ac9dbSNicholas Bellinger if (ret < 0) { \ 60957103d7fSJingoo Han pr_err("kstrtoul() failed with" \ 610c66ac9dbSNicholas Bellinger " ret: %d\n", ret); \ 611c66ac9dbSNicholas Bellinger return -EINVAL; \ 612c66ac9dbSNicholas Bellinger } \ 6130fd97ccfSChristoph Hellwig ret = se_dev_set_##_name(da->da_dev, (u32)val); \ 614c66ac9dbSNicholas Bellinger \ 615c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; \ 616c66ac9dbSNicholas Bellinger } 617c66ac9dbSNicholas Bellinger 618c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB(_name) \ 619c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_SHOW(_name); \ 620c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_STORE(_name); 621c66ac9dbSNicholas Bellinger 622c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB_RO(_name) \ 623c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_SHOW(_name); 624c66ac9dbSNicholas Bellinger 625c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); 626c66ac9dbSNicholas Bellinger #define SE_DEV_ATTR(_name, _mode) \ 627c66ac9dbSNicholas Bellinger static struct target_core_dev_attrib_attribute \ 628c66ac9dbSNicholas Bellinger target_core_dev_attrib_##_name = \ 629c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 630c66ac9dbSNicholas Bellinger target_core_dev_show_attr_##_name, \ 631c66ac9dbSNicholas Bellinger target_core_dev_store_attr_##_name); 632c66ac9dbSNicholas Bellinger 633c66ac9dbSNicholas Bellinger #define SE_DEV_ATTR_RO(_name); \ 634c66ac9dbSNicholas Bellinger static struct target_core_dev_attrib_attribute \ 635c66ac9dbSNicholas Bellinger target_core_dev_attrib_##_name = \ 636c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 637c66ac9dbSNicholas Bellinger target_core_dev_show_attr_##_name); 638c66ac9dbSNicholas Bellinger 639adfa9570STregaron Bayly DEF_DEV_ATTRIB(emulate_model_alias); 640adfa9570STregaron Bayly SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR); 641adfa9570STregaron Bayly 642c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_dpo); 643c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); 644c66ac9dbSNicholas Bellinger 645c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_fua_write); 646c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); 647c66ac9dbSNicholas Bellinger 648c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_fua_read); 649c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); 650c66ac9dbSNicholas Bellinger 651c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_write_cache); 652c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); 653c66ac9dbSNicholas Bellinger 654c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); 655c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); 656c66ac9dbSNicholas Bellinger 657c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_tas); 658c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); 659c66ac9dbSNicholas Bellinger 660c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_tpu); 661c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); 662c66ac9dbSNicholas Bellinger 663c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_tpws); 664c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); 665c66ac9dbSNicholas Bellinger 6660123a9ecSNicholas Bellinger DEF_DEV_ATTRIB(emulate_caw); 6670123a9ecSNicholas Bellinger SE_DEV_ATTR(emulate_caw, S_IRUGO | S_IWUSR); 6680123a9ecSNicholas Bellinger 669d397a445SNicholas Bellinger DEF_DEV_ATTRIB(emulate_3pc); 670d397a445SNicholas Bellinger SE_DEV_ATTR(emulate_3pc, S_IRUGO | S_IWUSR); 671d397a445SNicholas Bellinger 6722ed22c9cSNicholas Bellinger DEF_DEV_ATTRIB(pi_prot_type); 6732ed22c9cSNicholas Bellinger SE_DEV_ATTR(pi_prot_type, S_IRUGO | S_IWUSR); 6742ed22c9cSNicholas Bellinger 6752ed22c9cSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_pi_prot_type); 6762ed22c9cSNicholas Bellinger SE_DEV_ATTR_RO(hw_pi_prot_type); 6772ed22c9cSNicholas Bellinger 6782ed22c9cSNicholas Bellinger DEF_DEV_ATTRIB(pi_prot_format); 6792ed22c9cSNicholas Bellinger SE_DEV_ATTR(pi_prot_format, S_IRUGO | S_IWUSR); 6802ed22c9cSNicholas Bellinger 681c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(enforce_pr_isids); 682c66ac9dbSNicholas Bellinger SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); 683c66ac9dbSNicholas Bellinger 684e22a7f07SRoland Dreier DEF_DEV_ATTRIB(is_nonrot); 685e22a7f07SRoland Dreier SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); 686e22a7f07SRoland Dreier 6875de619a3SNicholas Bellinger DEF_DEV_ATTRIB(emulate_rest_reord); 6885de619a3SNicholas Bellinger SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); 6895de619a3SNicholas Bellinger 69092404e60SNicholas Bellinger DEF_DEV_ATTRIB(force_pr_aptpl); 69192404e60SNicholas Bellinger SE_DEV_ATTR(force_pr_aptpl, S_IRUGO | S_IWUSR); 69292404e60SNicholas Bellinger 693c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_block_size); 694c66ac9dbSNicholas Bellinger SE_DEV_ATTR_RO(hw_block_size); 695c66ac9dbSNicholas Bellinger 696c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(block_size); 697c66ac9dbSNicholas Bellinger SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); 698c66ac9dbSNicholas Bellinger 699c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_max_sectors); 700c66ac9dbSNicholas Bellinger SE_DEV_ATTR_RO(hw_max_sectors); 701c66ac9dbSNicholas Bellinger 702015487b8SRoland Dreier DEF_DEV_ATTRIB(fabric_max_sectors); 703015487b8SRoland Dreier SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); 704015487b8SRoland Dreier 705c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(optimal_sectors); 706c66ac9dbSNicholas Bellinger SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); 707c66ac9dbSNicholas Bellinger 708c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_queue_depth); 709c66ac9dbSNicholas Bellinger SE_DEV_ATTR_RO(hw_queue_depth); 710c66ac9dbSNicholas Bellinger 711c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(queue_depth); 712c66ac9dbSNicholas Bellinger SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); 713c66ac9dbSNicholas Bellinger 714c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(max_unmap_lba_count); 715c66ac9dbSNicholas Bellinger SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); 716c66ac9dbSNicholas Bellinger 717c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(max_unmap_block_desc_count); 718c66ac9dbSNicholas Bellinger SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); 719c66ac9dbSNicholas Bellinger 720c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(unmap_granularity); 721c66ac9dbSNicholas Bellinger SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); 722c66ac9dbSNicholas Bellinger 723c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(unmap_granularity_alignment); 724c66ac9dbSNicholas Bellinger SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); 725c66ac9dbSNicholas Bellinger 726773cbaf7SNicholas Bellinger DEF_DEV_ATTRIB(max_write_same_len); 727773cbaf7SNicholas Bellinger SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR); 728773cbaf7SNicholas Bellinger 729c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); 730c66ac9dbSNicholas Bellinger 731c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrib_attrs[] = { 732adfa9570STregaron Bayly &target_core_dev_attrib_emulate_model_alias.attr, 733c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_dpo.attr, 734c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_fua_write.attr, 735c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_fua_read.attr, 736c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_write_cache.attr, 737c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, 738c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_tas.attr, 739c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_tpu.attr, 740c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_tpws.attr, 7410123a9ecSNicholas Bellinger &target_core_dev_attrib_emulate_caw.attr, 742d397a445SNicholas Bellinger &target_core_dev_attrib_emulate_3pc.attr, 7432ed22c9cSNicholas Bellinger &target_core_dev_attrib_pi_prot_type.attr, 7442ed22c9cSNicholas Bellinger &target_core_dev_attrib_hw_pi_prot_type.attr, 7452ed22c9cSNicholas Bellinger &target_core_dev_attrib_pi_prot_format.attr, 746c66ac9dbSNicholas Bellinger &target_core_dev_attrib_enforce_pr_isids.attr, 74792404e60SNicholas Bellinger &target_core_dev_attrib_force_pr_aptpl.attr, 748e22a7f07SRoland Dreier &target_core_dev_attrib_is_nonrot.attr, 7495de619a3SNicholas Bellinger &target_core_dev_attrib_emulate_rest_reord.attr, 750c66ac9dbSNicholas Bellinger &target_core_dev_attrib_hw_block_size.attr, 751c66ac9dbSNicholas Bellinger &target_core_dev_attrib_block_size.attr, 752c66ac9dbSNicholas Bellinger &target_core_dev_attrib_hw_max_sectors.attr, 753015487b8SRoland Dreier &target_core_dev_attrib_fabric_max_sectors.attr, 754c66ac9dbSNicholas Bellinger &target_core_dev_attrib_optimal_sectors.attr, 755c66ac9dbSNicholas Bellinger &target_core_dev_attrib_hw_queue_depth.attr, 756c66ac9dbSNicholas Bellinger &target_core_dev_attrib_queue_depth.attr, 757c66ac9dbSNicholas Bellinger &target_core_dev_attrib_max_unmap_lba_count.attr, 758c66ac9dbSNicholas Bellinger &target_core_dev_attrib_max_unmap_block_desc_count.attr, 759c66ac9dbSNicholas Bellinger &target_core_dev_attrib_unmap_granularity.attr, 760c66ac9dbSNicholas Bellinger &target_core_dev_attrib_unmap_granularity_alignment.attr, 761773cbaf7SNicholas Bellinger &target_core_dev_attrib_max_write_same_len.attr, 762c66ac9dbSNicholas Bellinger NULL, 763c66ac9dbSNicholas Bellinger }; 764c66ac9dbSNicholas Bellinger 765c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_attrib_ops = { 766c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_attrib_attr_show, 767c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_attrib_attr_store, 768c66ac9dbSNicholas Bellinger }; 769c66ac9dbSNicholas Bellinger 770f79a897eSNicholas Bellinger TB_CIT_SETUP(dev_attrib, &target_core_dev_attrib_ops, NULL, 771f79a897eSNicholas Bellinger target_core_dev_attrib_attrs); 772c66ac9dbSNicholas Bellinger 773f79a897eSNicholas Bellinger /* End functions for struct config_item_type tb_dev_attrib_cit */ 774c66ac9dbSNicholas Bellinger 775c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_dev_wwn_cit */ 776c66ac9dbSNicholas Bellinger 777c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); 778c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR(_name, _mode) \ 779c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ 780c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 781c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name, \ 782c66ac9dbSNicholas Bellinger target_core_dev_wwn_store_attr_##_name); 783c66ac9dbSNicholas Bellinger 784c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR_RO(_name); \ 785c66ac9dbSNicholas Bellinger do { \ 786c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute \ 787c66ac9dbSNicholas Bellinger target_core_dev_wwn_##_name = \ 788c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 789c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name); \ 790c66ac9dbSNicholas Bellinger } while (0); 791c66ac9dbSNicholas Bellinger 792c66ac9dbSNicholas Bellinger /* 793c66ac9dbSNicholas Bellinger * VPD page 0x80 Unit serial 794c66ac9dbSNicholas Bellinger */ 795c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( 796c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 797c66ac9dbSNicholas Bellinger char *page) 798c66ac9dbSNicholas Bellinger { 799c66ac9dbSNicholas Bellinger return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 800c66ac9dbSNicholas Bellinger &t10_wwn->unit_serial[0]); 801c66ac9dbSNicholas Bellinger } 802c66ac9dbSNicholas Bellinger 803c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( 804c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 805c66ac9dbSNicholas Bellinger const char *page, 806c66ac9dbSNicholas Bellinger size_t count) 807c66ac9dbSNicholas Bellinger { 8080fd97ccfSChristoph Hellwig struct se_device *dev = t10_wwn->t10_dev; 809c66ac9dbSNicholas Bellinger unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; 810c66ac9dbSNicholas Bellinger 811c66ac9dbSNicholas Bellinger /* 812c66ac9dbSNicholas Bellinger * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 813c66ac9dbSNicholas Bellinger * from the struct scsi_device level firmware, do not allow 814c66ac9dbSNicholas Bellinger * VPD Unit Serial to be emulated. 815c66ac9dbSNicholas Bellinger * 816c66ac9dbSNicholas Bellinger * Note this struct scsi_device could also be emulating VPD 817c66ac9dbSNicholas Bellinger * information from its drivers/scsi LLD. But for now we assume 818c66ac9dbSNicholas Bellinger * it is doing 'the right thing' wrt a world wide unique 819c66ac9dbSNicholas Bellinger * VPD Unit Serial Number that OS dependent multipath can depend on. 820c66ac9dbSNicholas Bellinger */ 8210fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { 8226708bb27SAndy Grover pr_err("Underlying SCSI device firmware provided VPD" 823c66ac9dbSNicholas Bellinger " Unit Serial, ignoring request\n"); 824c66ac9dbSNicholas Bellinger return -EOPNOTSUPP; 825c66ac9dbSNicholas Bellinger } 826c66ac9dbSNicholas Bellinger 82760d645a4SDan Carpenter if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 8286708bb27SAndy Grover pr_err("Emulated VPD Unit Serial exceeds" 829c66ac9dbSNicholas Bellinger " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 830c66ac9dbSNicholas Bellinger return -EOVERFLOW; 831c66ac9dbSNicholas Bellinger } 832c66ac9dbSNicholas Bellinger /* 833c66ac9dbSNicholas Bellinger * Check to see if any active $FABRIC_MOD exports exist. If they 834c66ac9dbSNicholas Bellinger * do exist, fail here as changing this information on the fly 835c66ac9dbSNicholas Bellinger * (underneath the initiator side OS dependent multipath code) 836c66ac9dbSNicholas Bellinger * could cause negative effects. 837c66ac9dbSNicholas Bellinger */ 8380fd97ccfSChristoph Hellwig if (dev->export_count) { 8396708bb27SAndy Grover pr_err("Unable to set VPD Unit Serial while" 840c66ac9dbSNicholas Bellinger " active %d $FABRIC_MOD exports exist\n", 8410fd97ccfSChristoph Hellwig dev->export_count); 842c66ac9dbSNicholas Bellinger return -EINVAL; 843c66ac9dbSNicholas Bellinger } 8440fd97ccfSChristoph Hellwig 845c66ac9dbSNicholas Bellinger /* 846c66ac9dbSNicholas Bellinger * This currently assumes ASCII encoding for emulated VPD Unit Serial. 847c66ac9dbSNicholas Bellinger * 848c66ac9dbSNicholas Bellinger * Also, strip any newline added from the userspace 849c66ac9dbSNicholas Bellinger * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 850c66ac9dbSNicholas Bellinger */ 851c66ac9dbSNicholas Bellinger memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); 852c66ac9dbSNicholas Bellinger snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 8530fd97ccfSChristoph Hellwig snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 854c66ac9dbSNicholas Bellinger "%s", strstrip(buf)); 8550fd97ccfSChristoph Hellwig dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; 856c66ac9dbSNicholas Bellinger 8576708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 8580fd97ccfSChristoph Hellwig " %s\n", dev->t10_wwn.unit_serial); 859c66ac9dbSNicholas Bellinger 860c66ac9dbSNicholas Bellinger return count; 861c66ac9dbSNicholas Bellinger } 862c66ac9dbSNicholas Bellinger 863c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); 864c66ac9dbSNicholas Bellinger 865c66ac9dbSNicholas Bellinger /* 866c66ac9dbSNicholas Bellinger * VPD page 0x83 Protocol Identifier 867c66ac9dbSNicholas Bellinger */ 868c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( 869c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 870c66ac9dbSNicholas Bellinger char *page) 871c66ac9dbSNicholas Bellinger { 872c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; 873c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; 874c66ac9dbSNicholas Bellinger ssize_t len = 0; 875c66ac9dbSNicholas Bellinger 876c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); 877c66ac9dbSNicholas Bellinger 878c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); 879c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 8806708bb27SAndy Grover if (!vpd->protocol_identifier_set) 881c66ac9dbSNicholas Bellinger continue; 882c66ac9dbSNicholas Bellinger 883c66ac9dbSNicholas Bellinger transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 884c66ac9dbSNicholas Bellinger 8856708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 886c66ac9dbSNicholas Bellinger break; 887c66ac9dbSNicholas Bellinger 888c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 889c66ac9dbSNicholas Bellinger } 890c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); 891c66ac9dbSNicholas Bellinger 892c66ac9dbSNicholas Bellinger return len; 893c66ac9dbSNicholas Bellinger } 894c66ac9dbSNicholas Bellinger 895c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( 896c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 897c66ac9dbSNicholas Bellinger const char *page, 898c66ac9dbSNicholas Bellinger size_t count) 899c66ac9dbSNicholas Bellinger { 900c66ac9dbSNicholas Bellinger return -ENOSYS; 901c66ac9dbSNicholas Bellinger } 902c66ac9dbSNicholas Bellinger 903c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); 904c66ac9dbSNicholas Bellinger 905c66ac9dbSNicholas Bellinger /* 906c66ac9dbSNicholas Bellinger * Generic wrapper for dumping VPD identifiers by association. 907c66ac9dbSNicholas Bellinger */ 908c66ac9dbSNicholas Bellinger #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 909c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_##_name( \ 910c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, \ 911c66ac9dbSNicholas Bellinger char *page) \ 912c66ac9dbSNicholas Bellinger { \ 913c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; \ 914c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; \ 915c66ac9dbSNicholas Bellinger ssize_t len = 0; \ 916c66ac9dbSNicholas Bellinger \ 917c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); \ 918c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 919c66ac9dbSNicholas Bellinger if (vpd->association != _assoc) \ 920c66ac9dbSNicholas Bellinger continue; \ 921c66ac9dbSNicholas Bellinger \ 922c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 923c66ac9dbSNicholas Bellinger transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 9246708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 925c66ac9dbSNicholas Bellinger break; \ 926c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 927c66ac9dbSNicholas Bellinger \ 928c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 929c66ac9dbSNicholas Bellinger transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 9306708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 931c66ac9dbSNicholas Bellinger break; \ 932c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 933c66ac9dbSNicholas Bellinger \ 934c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 935c66ac9dbSNicholas Bellinger transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 9366708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 937c66ac9dbSNicholas Bellinger break; \ 938c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 939c66ac9dbSNicholas Bellinger } \ 940c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); \ 941c66ac9dbSNicholas Bellinger \ 942c66ac9dbSNicholas Bellinger return len; \ 943c66ac9dbSNicholas Bellinger } 944c66ac9dbSNicholas Bellinger 945c66ac9dbSNicholas Bellinger /* 946163cd5faSAndy Shevchenko * VPD page 0x83 Association: Logical Unit 947c66ac9dbSNicholas Bellinger */ 948c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 949c66ac9dbSNicholas Bellinger 950c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( 951c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 952c66ac9dbSNicholas Bellinger const char *page, 953c66ac9dbSNicholas Bellinger size_t count) 954c66ac9dbSNicholas Bellinger { 955c66ac9dbSNicholas Bellinger return -ENOSYS; 956c66ac9dbSNicholas Bellinger } 957c66ac9dbSNicholas Bellinger 958c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); 959c66ac9dbSNicholas Bellinger 960c66ac9dbSNicholas Bellinger /* 961c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: Target Port 962c66ac9dbSNicholas Bellinger */ 963c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 964c66ac9dbSNicholas Bellinger 965c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( 966c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 967c66ac9dbSNicholas Bellinger const char *page, 968c66ac9dbSNicholas Bellinger size_t count) 969c66ac9dbSNicholas Bellinger { 970c66ac9dbSNicholas Bellinger return -ENOSYS; 971c66ac9dbSNicholas Bellinger } 972c66ac9dbSNicholas Bellinger 973c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); 974c66ac9dbSNicholas Bellinger 975c66ac9dbSNicholas Bellinger /* 976c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: SCSI Target Device 977c66ac9dbSNicholas Bellinger */ 978c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 979c66ac9dbSNicholas Bellinger 980c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( 981c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 982c66ac9dbSNicholas Bellinger const char *page, 983c66ac9dbSNicholas Bellinger size_t count) 984c66ac9dbSNicholas Bellinger { 985c66ac9dbSNicholas Bellinger return -ENOSYS; 986c66ac9dbSNicholas Bellinger } 987c66ac9dbSNicholas Bellinger 988c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); 989c66ac9dbSNicholas Bellinger 990c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); 991c66ac9dbSNicholas Bellinger 992c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 993c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_unit_serial.attr, 994c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_protocol_identifier.attr, 995c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_logical_unit.attr, 996c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_target_port.attr, 997c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, 998c66ac9dbSNicholas Bellinger NULL, 999c66ac9dbSNicholas Bellinger }; 1000c66ac9dbSNicholas Bellinger 1001c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_wwn_ops = { 1002c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_wwn_attr_show, 1003c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_wwn_attr_store, 1004c66ac9dbSNicholas Bellinger }; 1005c66ac9dbSNicholas Bellinger 1006c66ac9dbSNicholas Bellinger static struct config_item_type target_core_dev_wwn_cit = { 1007c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_dev_wwn_ops, 1008c66ac9dbSNicholas Bellinger .ct_attrs = target_core_dev_wwn_attrs, 1009c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 1010c66ac9dbSNicholas Bellinger }; 1011c66ac9dbSNicholas Bellinger 1012c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_dev_wwn_cit */ 1013c66ac9dbSNicholas Bellinger 101491e2e39bSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_pr_cit */ 1015c66ac9dbSNicholas Bellinger 10160fd97ccfSChristoph Hellwig CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); 1017c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR(_name, _mode) \ 1018c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 1019c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 1020c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name, \ 1021c66ac9dbSNicholas Bellinger target_core_dev_pr_store_attr_##_name); 1022c66ac9dbSNicholas Bellinger 1023c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR_RO(_name); \ 1024c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 1025c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 1026c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name); 1027c66ac9dbSNicholas Bellinger 1028d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, 1029d977f437SChristoph Hellwig char *page) 1030c66ac9dbSNicholas Bellinger { 1031c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1032c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1033c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1034c66ac9dbSNicholas Bellinger 1035c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1036c66ac9dbSNicholas Bellinger 1037c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1038d977f437SChristoph Hellwig if (!pr_reg) 1039d977f437SChristoph Hellwig return sprintf(page, "No SPC-3 Reservation holder\n"); 1040d977f437SChristoph Hellwig 1041c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1042d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); 1043c66ac9dbSNicholas Bellinger 1044d977f437SChristoph Hellwig return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", 1045e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1046d2843c17SAndy Grover se_nacl->initiatorname, i_buf); 1047c66ac9dbSNicholas Bellinger } 1048c66ac9dbSNicholas Bellinger 1049d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 1050d977f437SChristoph Hellwig char *page) 1051c66ac9dbSNicholas Bellinger { 1052c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1053d977f437SChristoph Hellwig ssize_t len; 1054c66ac9dbSNicholas Bellinger 1055c66ac9dbSNicholas Bellinger se_nacl = dev->dev_reserved_node_acl; 1056d977f437SChristoph Hellwig if (se_nacl) { 1057d977f437SChristoph Hellwig len = sprintf(page, 1058d977f437SChristoph Hellwig "SPC-2 Reservation: %s Initiator: %s\n", 1059e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1060c66ac9dbSNicholas Bellinger se_nacl->initiatorname); 1061d977f437SChristoph Hellwig } else { 1062d977f437SChristoph Hellwig len = sprintf(page, "No SPC-2 Reservation holder\n"); 1063d977f437SChristoph Hellwig } 1064d977f437SChristoph Hellwig return len; 1065c66ac9dbSNicholas Bellinger } 1066c66ac9dbSNicholas Bellinger 10670fd97ccfSChristoph Hellwig static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, 1068c66ac9dbSNicholas Bellinger char *page) 1069c66ac9dbSNicholas Bellinger { 1070d977f437SChristoph Hellwig int ret; 1071c66ac9dbSNicholas Bellinger 1072d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1073d977f437SChristoph Hellwig return sprintf(page, "Passthrough\n"); 1074c66ac9dbSNicholas Bellinger 1075d977f437SChristoph Hellwig spin_lock(&dev->dev_reservation_lock); 1076d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1077d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc2_res(dev, page); 1078d977f437SChristoph Hellwig else 1079d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc3_res(dev, page); 1080d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1081d977f437SChristoph Hellwig return ret; 1082c66ac9dbSNicholas Bellinger } 1083c66ac9dbSNicholas Bellinger 1084c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_holder); 1085c66ac9dbSNicholas Bellinger 1086c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( 10870fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1088c66ac9dbSNicholas Bellinger { 1089c66ac9dbSNicholas Bellinger ssize_t len = 0; 1090c66ac9dbSNicholas Bellinger 1091c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1092d977f437SChristoph Hellwig if (!dev->dev_pr_res_holder) { 1093c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1094d977f437SChristoph Hellwig } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { 1095c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: All Target" 1096c66ac9dbSNicholas Bellinger " Ports registration\n"); 1097d977f437SChristoph Hellwig } else { 1098c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: Single" 1099c66ac9dbSNicholas Bellinger " Target Port registration\n"); 1100d977f437SChristoph Hellwig } 1101c66ac9dbSNicholas Bellinger 1102d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1103c66ac9dbSNicholas Bellinger return len; 1104c66ac9dbSNicholas Bellinger } 1105c66ac9dbSNicholas Bellinger 1106c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); 1107c66ac9dbSNicholas Bellinger 1108c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_generation( 11090fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1110c66ac9dbSNicholas Bellinger { 11110fd97ccfSChristoph Hellwig return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); 1112c66ac9dbSNicholas Bellinger } 1113c66ac9dbSNicholas Bellinger 1114c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_generation); 1115c66ac9dbSNicholas Bellinger 1116c66ac9dbSNicholas Bellinger /* 1117c66ac9dbSNicholas Bellinger * res_pr_holder_tg_port 1118c66ac9dbSNicholas Bellinger */ 1119c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( 11200fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1121c66ac9dbSNicholas Bellinger { 1122c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1123c66ac9dbSNicholas Bellinger struct se_lun *lun; 1124c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg; 1125c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1126c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo; 1127c66ac9dbSNicholas Bellinger ssize_t len = 0; 1128c66ac9dbSNicholas Bellinger 1129c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1130c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 11316708bb27SAndy Grover if (!pr_reg) { 1132c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1133d977f437SChristoph Hellwig goto out_unlock; 1134c66ac9dbSNicholas Bellinger } 1135d977f437SChristoph Hellwig 1136c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1137c66ac9dbSNicholas Bellinger se_tpg = se_nacl->se_tpg; 1138c66ac9dbSNicholas Bellinger lun = pr_reg->pr_reg_tg_pt_lun; 1139e3d6f909SAndy Grover tfo = se_tpg->se_tpg_tfo; 1140c66ac9dbSNicholas Bellinger 1141c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: %s" 1142c66ac9dbSNicholas Bellinger " Target Node Endpoint: %s\n", tfo->get_fabric_name(), 1143c66ac9dbSNicholas Bellinger tfo->tpg_get_wwn(se_tpg)); 1144c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 114535d1efe8SMasanari Iida " Identifier Tag: %hu %s Portal Group Tag: %hu" 1146c66ac9dbSNicholas Bellinger " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, 1147c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), 1148c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), lun->unpacked_lun); 1149c66ac9dbSNicholas Bellinger 1150d977f437SChristoph Hellwig out_unlock: 1151d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1152c66ac9dbSNicholas Bellinger return len; 1153c66ac9dbSNicholas Bellinger } 1154c66ac9dbSNicholas Bellinger 1155c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); 1156c66ac9dbSNicholas Bellinger 1157c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( 11580fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1159c66ac9dbSNicholas Bellinger { 1160c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo; 1161c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1162c66ac9dbSNicholas Bellinger unsigned char buf[384]; 1163c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1164c66ac9dbSNicholas Bellinger ssize_t len = 0; 1165d2843c17SAndy Grover int reg_count = 0; 1166c66ac9dbSNicholas Bellinger 1167c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 1168c66ac9dbSNicholas Bellinger 11690fd97ccfSChristoph Hellwig spin_lock(&dev->t10_pr.registration_lock); 11700fd97ccfSChristoph Hellwig list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, 1171c66ac9dbSNicholas Bellinger pr_reg_list) { 1172c66ac9dbSNicholas Bellinger 1173c66ac9dbSNicholas Bellinger memset(buf, 0, 384); 1174c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1175c66ac9dbSNicholas Bellinger tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1176d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, 1177c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 1178c66ac9dbSNicholas Bellinger sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 1179c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), 1180d2843c17SAndy Grover pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, 1181c66ac9dbSNicholas Bellinger pr_reg->pr_res_generation); 1182c66ac9dbSNicholas Bellinger 11836708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1184c66ac9dbSNicholas Bellinger break; 1185c66ac9dbSNicholas Bellinger 1186c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1187c66ac9dbSNicholas Bellinger reg_count++; 1188c66ac9dbSNicholas Bellinger } 11890fd97ccfSChristoph Hellwig spin_unlock(&dev->t10_pr.registration_lock); 1190c66ac9dbSNicholas Bellinger 11916708bb27SAndy Grover if (!reg_count) 1192c66ac9dbSNicholas Bellinger len += sprintf(page+len, "None\n"); 1193c66ac9dbSNicholas Bellinger 1194c66ac9dbSNicholas Bellinger return len; 1195c66ac9dbSNicholas Bellinger } 1196c66ac9dbSNicholas Bellinger 1197c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); 1198c66ac9dbSNicholas Bellinger 1199c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_type( 12000fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1201c66ac9dbSNicholas Bellinger { 1202c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1203c66ac9dbSNicholas Bellinger ssize_t len = 0; 1204c66ac9dbSNicholas Bellinger 1205c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1206c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1207d977f437SChristoph Hellwig if (pr_reg) { 1208c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1209c66ac9dbSNicholas Bellinger core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1210d977f437SChristoph Hellwig } else { 1211d977f437SChristoph Hellwig len = sprintf(page, "No SPC-3 Reservation holder\n"); 1212d977f437SChristoph Hellwig } 1213c66ac9dbSNicholas Bellinger 1214d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1215c66ac9dbSNicholas Bellinger return len; 1216c66ac9dbSNicholas Bellinger } 1217c66ac9dbSNicholas Bellinger 1218c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_type); 1219c66ac9dbSNicholas Bellinger 1220c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_type( 12210fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1222c66ac9dbSNicholas Bellinger { 1223d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1224d977f437SChristoph Hellwig return sprintf(page, "SPC_PASSTHROUGH\n"); 1225d977f437SChristoph Hellwig else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1226d977f437SChristoph Hellwig return sprintf(page, "SPC2_RESERVATIONS\n"); 1227d977f437SChristoph Hellwig else 1228d977f437SChristoph Hellwig return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1229c66ac9dbSNicholas Bellinger } 1230c66ac9dbSNicholas Bellinger 1231c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_type); 1232c66ac9dbSNicholas Bellinger 1233c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( 12340fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1235c66ac9dbSNicholas Bellinger { 1236d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1237c66ac9dbSNicholas Bellinger return 0; 1238c66ac9dbSNicholas Bellinger 1239c66ac9dbSNicholas Bellinger return sprintf(page, "APTPL Bit Status: %s\n", 12400fd97ccfSChristoph Hellwig (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1241c66ac9dbSNicholas Bellinger } 1242c66ac9dbSNicholas Bellinger 1243c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_aptpl_active); 1244c66ac9dbSNicholas Bellinger 1245c66ac9dbSNicholas Bellinger /* 1246c66ac9dbSNicholas Bellinger * res_aptpl_metadata 1247c66ac9dbSNicholas Bellinger */ 1248c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( 12490fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1250c66ac9dbSNicholas Bellinger { 1251d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1252c66ac9dbSNicholas Bellinger return 0; 1253c66ac9dbSNicholas Bellinger 1254c66ac9dbSNicholas Bellinger return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1255c66ac9dbSNicholas Bellinger } 1256c66ac9dbSNicholas Bellinger 1257c66ac9dbSNicholas Bellinger enum { 1258c66ac9dbSNicholas Bellinger Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1259c66ac9dbSNicholas Bellinger Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1260c66ac9dbSNicholas Bellinger Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1261c66ac9dbSNicholas Bellinger Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1262c66ac9dbSNicholas Bellinger }; 1263c66ac9dbSNicholas Bellinger 1264c66ac9dbSNicholas Bellinger static match_table_t tokens = { 1265c66ac9dbSNicholas Bellinger {Opt_initiator_fabric, "initiator_fabric=%s"}, 1266c66ac9dbSNicholas Bellinger {Opt_initiator_node, "initiator_node=%s"}, 1267c66ac9dbSNicholas Bellinger {Opt_initiator_sid, "initiator_sid=%s"}, 1268c66ac9dbSNicholas Bellinger {Opt_sa_res_key, "sa_res_key=%s"}, 1269c66ac9dbSNicholas Bellinger {Opt_res_holder, "res_holder=%d"}, 1270c66ac9dbSNicholas Bellinger {Opt_res_type, "res_type=%d"}, 1271c66ac9dbSNicholas Bellinger {Opt_res_scope, "res_scope=%d"}, 1272c66ac9dbSNicholas Bellinger {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1273c66ac9dbSNicholas Bellinger {Opt_mapped_lun, "mapped_lun=%d"}, 1274c66ac9dbSNicholas Bellinger {Opt_target_fabric, "target_fabric=%s"}, 1275c66ac9dbSNicholas Bellinger {Opt_target_node, "target_node=%s"}, 1276c66ac9dbSNicholas Bellinger {Opt_tpgt, "tpgt=%d"}, 1277c66ac9dbSNicholas Bellinger {Opt_port_rtpi, "port_rtpi=%d"}, 1278c66ac9dbSNicholas Bellinger {Opt_target_lun, "target_lun=%d"}, 1279c66ac9dbSNicholas Bellinger {Opt_err, NULL} 1280c66ac9dbSNicholas Bellinger }; 1281c66ac9dbSNicholas Bellinger 1282c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( 12830fd97ccfSChristoph Hellwig struct se_device *dev, 1284c66ac9dbSNicholas Bellinger const char *page, 1285c66ac9dbSNicholas Bellinger size_t count) 1286c66ac9dbSNicholas Bellinger { 12876d180253SJesper Juhl unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 12886d180253SJesper Juhl unsigned char *t_fabric = NULL, *t_port = NULL; 12898d213559SJoern Engel char *orig, *ptr, *opts; 1290c66ac9dbSNicholas Bellinger substring_t args[MAX_OPT_ARGS]; 1291c66ac9dbSNicholas Bellinger unsigned long long tmp_ll; 1292c66ac9dbSNicholas Bellinger u64 sa_res_key = 0; 1293c66ac9dbSNicholas Bellinger u32 mapped_lun = 0, target_lun = 0; 1294c66ac9dbSNicholas Bellinger int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 1295c66ac9dbSNicholas Bellinger u16 port_rpti = 0, tpgt = 0; 1296c66ac9dbSNicholas Bellinger u8 type = 0, scope; 1297c66ac9dbSNicholas Bellinger 1298d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1299d977f437SChristoph Hellwig return 0; 1300d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1301c66ac9dbSNicholas Bellinger return 0; 1302c66ac9dbSNicholas Bellinger 13030fd97ccfSChristoph Hellwig if (dev->export_count) { 13046708bb27SAndy Grover pr_debug("Unable to process APTPL metadata while" 1305c66ac9dbSNicholas Bellinger " active fabric exports exist\n"); 1306c66ac9dbSNicholas Bellinger return -EINVAL; 1307c66ac9dbSNicholas Bellinger } 1308c66ac9dbSNicholas Bellinger 1309c66ac9dbSNicholas Bellinger opts = kstrdup(page, GFP_KERNEL); 1310c66ac9dbSNicholas Bellinger if (!opts) 1311c66ac9dbSNicholas Bellinger return -ENOMEM; 1312c66ac9dbSNicholas Bellinger 1313c66ac9dbSNicholas Bellinger orig = opts; 131490c161b6SSebastian Andrzej Siewior while ((ptr = strsep(&opts, ",\n")) != NULL) { 1315c66ac9dbSNicholas Bellinger if (!*ptr) 1316c66ac9dbSNicholas Bellinger continue; 1317c66ac9dbSNicholas Bellinger 1318c66ac9dbSNicholas Bellinger token = match_token(ptr, tokens, args); 1319c66ac9dbSNicholas Bellinger switch (token) { 1320c66ac9dbSNicholas Bellinger case Opt_initiator_fabric: 13218d213559SJoern Engel i_fabric = match_strdup(args); 13226d180253SJesper Juhl if (!i_fabric) { 13236d180253SJesper Juhl ret = -ENOMEM; 13246d180253SJesper Juhl goto out; 13256d180253SJesper Juhl } 1326c66ac9dbSNicholas Bellinger break; 1327c66ac9dbSNicholas Bellinger case Opt_initiator_node: 13288d213559SJoern Engel i_port = match_strdup(args); 13296d180253SJesper Juhl if (!i_port) { 13306d180253SJesper Juhl ret = -ENOMEM; 13316d180253SJesper Juhl goto out; 13326d180253SJesper Juhl } 133360d645a4SDan Carpenter if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 13346708bb27SAndy Grover pr_err("APTPL metadata initiator_node=" 1335c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 1336c66ac9dbSNicholas Bellinger PR_APTPL_MAX_IPORT_LEN); 1337c66ac9dbSNicholas Bellinger ret = -EINVAL; 1338c66ac9dbSNicholas Bellinger break; 1339c66ac9dbSNicholas Bellinger } 1340c66ac9dbSNicholas Bellinger break; 1341c66ac9dbSNicholas Bellinger case Opt_initiator_sid: 13428d213559SJoern Engel isid = match_strdup(args); 13436d180253SJesper Juhl if (!isid) { 13446d180253SJesper Juhl ret = -ENOMEM; 13456d180253SJesper Juhl goto out; 13466d180253SJesper Juhl } 134760d645a4SDan Carpenter if (strlen(isid) >= PR_REG_ISID_LEN) { 13486708bb27SAndy Grover pr_err("APTPL metadata initiator_isid" 1349c66ac9dbSNicholas Bellinger "= exceeds PR_REG_ISID_LEN: %d\n", 1350c66ac9dbSNicholas Bellinger PR_REG_ISID_LEN); 1351c66ac9dbSNicholas Bellinger ret = -EINVAL; 1352c66ac9dbSNicholas Bellinger break; 1353c66ac9dbSNicholas Bellinger } 1354c66ac9dbSNicholas Bellinger break; 1355c66ac9dbSNicholas Bellinger case Opt_sa_res_key: 13568d213559SJoern Engel ret = kstrtoull(args->from, 0, &tmp_ll); 1357c66ac9dbSNicholas Bellinger if (ret < 0) { 13588d213559SJoern Engel pr_err("kstrtoull() failed for sa_res_key=\n"); 1359c66ac9dbSNicholas Bellinger goto out; 1360c66ac9dbSNicholas Bellinger } 1361c66ac9dbSNicholas Bellinger sa_res_key = (u64)tmp_ll; 1362c66ac9dbSNicholas Bellinger break; 1363c66ac9dbSNicholas Bellinger /* 1364c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Reservation 1365c66ac9dbSNicholas Bellinger */ 1366c66ac9dbSNicholas Bellinger case Opt_res_holder: 1367c66ac9dbSNicholas Bellinger match_int(args, &arg); 1368c66ac9dbSNicholas Bellinger res_holder = arg; 1369c66ac9dbSNicholas Bellinger break; 1370c66ac9dbSNicholas Bellinger case Opt_res_type: 1371c66ac9dbSNicholas Bellinger match_int(args, &arg); 1372c66ac9dbSNicholas Bellinger type = (u8)arg; 1373c66ac9dbSNicholas Bellinger break; 1374c66ac9dbSNicholas Bellinger case Opt_res_scope: 1375c66ac9dbSNicholas Bellinger match_int(args, &arg); 1376c66ac9dbSNicholas Bellinger scope = (u8)arg; 1377c66ac9dbSNicholas Bellinger break; 1378c66ac9dbSNicholas Bellinger case Opt_res_all_tg_pt: 1379c66ac9dbSNicholas Bellinger match_int(args, &arg); 1380c66ac9dbSNicholas Bellinger all_tg_pt = (int)arg; 1381c66ac9dbSNicholas Bellinger break; 1382c66ac9dbSNicholas Bellinger case Opt_mapped_lun: 1383c66ac9dbSNicholas Bellinger match_int(args, &arg); 1384c66ac9dbSNicholas Bellinger mapped_lun = (u32)arg; 1385c66ac9dbSNicholas Bellinger break; 1386c66ac9dbSNicholas Bellinger /* 1387c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Target Port 1388c66ac9dbSNicholas Bellinger */ 1389c66ac9dbSNicholas Bellinger case Opt_target_fabric: 13908d213559SJoern Engel t_fabric = match_strdup(args); 13916d180253SJesper Juhl if (!t_fabric) { 13926d180253SJesper Juhl ret = -ENOMEM; 13936d180253SJesper Juhl goto out; 13946d180253SJesper Juhl } 1395c66ac9dbSNicholas Bellinger break; 1396c66ac9dbSNicholas Bellinger case Opt_target_node: 13978d213559SJoern Engel t_port = match_strdup(args); 13986d180253SJesper Juhl if (!t_port) { 13996d180253SJesper Juhl ret = -ENOMEM; 14006d180253SJesper Juhl goto out; 14016d180253SJesper Juhl } 140260d645a4SDan Carpenter if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 14036708bb27SAndy Grover pr_err("APTPL metadata target_node=" 1404c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 1405c66ac9dbSNicholas Bellinger PR_APTPL_MAX_TPORT_LEN); 1406c66ac9dbSNicholas Bellinger ret = -EINVAL; 1407c66ac9dbSNicholas Bellinger break; 1408c66ac9dbSNicholas Bellinger } 1409c66ac9dbSNicholas Bellinger break; 1410c66ac9dbSNicholas Bellinger case Opt_tpgt: 1411c66ac9dbSNicholas Bellinger match_int(args, &arg); 1412c66ac9dbSNicholas Bellinger tpgt = (u16)arg; 1413c66ac9dbSNicholas Bellinger break; 1414c66ac9dbSNicholas Bellinger case Opt_port_rtpi: 1415c66ac9dbSNicholas Bellinger match_int(args, &arg); 1416c66ac9dbSNicholas Bellinger port_rpti = (u16)arg; 1417c66ac9dbSNicholas Bellinger break; 1418c66ac9dbSNicholas Bellinger case Opt_target_lun: 1419c66ac9dbSNicholas Bellinger match_int(args, &arg); 1420c66ac9dbSNicholas Bellinger target_lun = (u32)arg; 1421c66ac9dbSNicholas Bellinger break; 1422c66ac9dbSNicholas Bellinger default: 1423c66ac9dbSNicholas Bellinger break; 1424c66ac9dbSNicholas Bellinger } 1425c66ac9dbSNicholas Bellinger } 1426c66ac9dbSNicholas Bellinger 14276708bb27SAndy Grover if (!i_port || !t_port || !sa_res_key) { 14286708bb27SAndy Grover pr_err("Illegal parameters for APTPL registration\n"); 1429c66ac9dbSNicholas Bellinger ret = -EINVAL; 1430c66ac9dbSNicholas Bellinger goto out; 1431c66ac9dbSNicholas Bellinger } 1432c66ac9dbSNicholas Bellinger 1433c66ac9dbSNicholas Bellinger if (res_holder && !(type)) { 14346708bb27SAndy Grover pr_err("Illegal PR type: 0x%02x for reservation" 1435c66ac9dbSNicholas Bellinger " holder\n", type); 1436c66ac9dbSNicholas Bellinger ret = -EINVAL; 1437c66ac9dbSNicholas Bellinger goto out; 1438c66ac9dbSNicholas Bellinger } 1439c66ac9dbSNicholas Bellinger 14400fd97ccfSChristoph Hellwig ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, 1441c66ac9dbSNicholas Bellinger i_port, isid, mapped_lun, t_port, tpgt, target_lun, 1442c66ac9dbSNicholas Bellinger res_holder, all_tg_pt, type); 1443c66ac9dbSNicholas Bellinger out: 14446d180253SJesper Juhl kfree(i_fabric); 14456d180253SJesper Juhl kfree(i_port); 14466d180253SJesper Juhl kfree(isid); 14476d180253SJesper Juhl kfree(t_fabric); 14486d180253SJesper Juhl kfree(t_port); 1449c66ac9dbSNicholas Bellinger kfree(orig); 1450c66ac9dbSNicholas Bellinger return (ret == 0) ? count : ret; 1451c66ac9dbSNicholas Bellinger } 1452c66ac9dbSNicholas Bellinger 1453c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); 1454c66ac9dbSNicholas Bellinger 14550fd97ccfSChristoph Hellwig CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); 1456c66ac9dbSNicholas Bellinger 1457c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_pr_attrs[] = { 1458c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_holder.attr, 1459c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_all_tgt_pts.attr, 1460c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_generation.attr, 1461c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_holder_tg_port.attr, 1462c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_registered_i_pts.attr, 1463c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_type.attr, 1464c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_type.attr, 1465c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_active.attr, 1466c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_metadata.attr, 1467c66ac9dbSNicholas Bellinger NULL, 1468c66ac9dbSNicholas Bellinger }; 1469c66ac9dbSNicholas Bellinger 1470c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_pr_ops = { 1471c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_pr_attr_show, 1472c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_pr_attr_store, 1473c66ac9dbSNicholas Bellinger }; 1474c66ac9dbSNicholas Bellinger 147591e2e39bSNicholas Bellinger TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs); 1476c66ac9dbSNicholas Bellinger 147791e2e39bSNicholas Bellinger /* End functions for struct config_item_type tb_dev_pr_cit */ 1478c66ac9dbSNicholas Bellinger 147973112edcSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_cit */ 1480c66ac9dbSNicholas Bellinger 1481c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_info(void *p, char *page) 1482c66ac9dbSNicholas Bellinger { 14830fd97ccfSChristoph Hellwig struct se_device *dev = p; 14840fd97ccfSChristoph Hellwig struct se_subsystem_api *t = dev->transport; 1485c66ac9dbSNicholas Bellinger int bl = 0; 1486c66ac9dbSNicholas Bellinger ssize_t read_bytes = 0; 1487c66ac9dbSNicholas Bellinger 14880fd97ccfSChristoph Hellwig transport_dump_dev_state(dev, page, &bl); 1489c66ac9dbSNicholas Bellinger read_bytes += bl; 14900fd97ccfSChristoph Hellwig read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); 1491c66ac9dbSNicholas Bellinger return read_bytes; 1492c66ac9dbSNicholas Bellinger } 1493c66ac9dbSNicholas Bellinger 1494c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_info = { 1495c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1496c66ac9dbSNicholas Bellinger .ca_name = "info", 1497c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO }, 1498c66ac9dbSNicholas Bellinger .show = target_core_show_dev_info, 1499c66ac9dbSNicholas Bellinger .store = NULL, 1500c66ac9dbSNicholas Bellinger }; 1501c66ac9dbSNicholas Bellinger 1502c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_control( 1503c66ac9dbSNicholas Bellinger void *p, 1504c66ac9dbSNicholas Bellinger const char *page, 1505c66ac9dbSNicholas Bellinger size_t count) 1506c66ac9dbSNicholas Bellinger { 15070fd97ccfSChristoph Hellwig struct se_device *dev = p; 15080fd97ccfSChristoph Hellwig struct se_subsystem_api *t = dev->transport; 1509c66ac9dbSNicholas Bellinger 15100fd97ccfSChristoph Hellwig return t->set_configfs_dev_params(dev, page, count); 1511c66ac9dbSNicholas Bellinger } 1512c66ac9dbSNicholas Bellinger 1513c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_control = { 1514c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1515c66ac9dbSNicholas Bellinger .ca_name = "control", 1516c66ac9dbSNicholas Bellinger .ca_mode = S_IWUSR }, 1517c66ac9dbSNicholas Bellinger .show = NULL, 1518c66ac9dbSNicholas Bellinger .store = target_core_store_dev_control, 1519c66ac9dbSNicholas Bellinger }; 1520c66ac9dbSNicholas Bellinger 1521c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_alias(void *p, char *page) 1522c66ac9dbSNicholas Bellinger { 15230fd97ccfSChristoph Hellwig struct se_device *dev = p; 1524c66ac9dbSNicholas Bellinger 15250fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_ALIAS)) 1526c66ac9dbSNicholas Bellinger return 0; 1527c66ac9dbSNicholas Bellinger 15280fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); 1529c66ac9dbSNicholas Bellinger } 1530c66ac9dbSNicholas Bellinger 1531c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_alias( 1532c66ac9dbSNicholas Bellinger void *p, 1533c66ac9dbSNicholas Bellinger const char *page, 1534c66ac9dbSNicholas Bellinger size_t count) 1535c66ac9dbSNicholas Bellinger { 15360fd97ccfSChristoph Hellwig struct se_device *dev = p; 15370fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1538c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1539c66ac9dbSNicholas Bellinger 1540c66ac9dbSNicholas Bellinger if (count > (SE_DEV_ALIAS_LEN-1)) { 15416708bb27SAndy Grover pr_err("alias count: %d exceeds" 1542c66ac9dbSNicholas Bellinger " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 1543c66ac9dbSNicholas Bellinger SE_DEV_ALIAS_LEN-1); 1544c66ac9dbSNicholas Bellinger return -EINVAL; 1545c66ac9dbSNicholas Bellinger } 1546c66ac9dbSNicholas Bellinger 15470fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); 15483011684cSDan Carpenter if (!read_bytes) 15493011684cSDan Carpenter return -EINVAL; 15500fd97ccfSChristoph Hellwig if (dev->dev_alias[read_bytes - 1] == '\n') 15510fd97ccfSChristoph Hellwig dev->dev_alias[read_bytes - 1] = '\0'; 15520877eafdSSebastian Andrzej Siewior 15530fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_ALIAS; 15543011684cSDan Carpenter 15556708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 1556c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 15570fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 15580fd97ccfSChristoph Hellwig dev->dev_alias); 1559c66ac9dbSNicholas Bellinger 1560c66ac9dbSNicholas Bellinger return read_bytes; 1561c66ac9dbSNicholas Bellinger } 1562c66ac9dbSNicholas Bellinger 1563c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alias = { 1564c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1565c66ac9dbSNicholas Bellinger .ca_name = "alias", 1566c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1567c66ac9dbSNicholas Bellinger .show = target_core_show_dev_alias, 1568c66ac9dbSNicholas Bellinger .store = target_core_store_dev_alias, 1569c66ac9dbSNicholas Bellinger }; 1570c66ac9dbSNicholas Bellinger 1571c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_udev_path(void *p, char *page) 1572c66ac9dbSNicholas Bellinger { 15730fd97ccfSChristoph Hellwig struct se_device *dev = p; 1574c66ac9dbSNicholas Bellinger 15750fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_UDEV_PATH)) 1576c66ac9dbSNicholas Bellinger return 0; 1577c66ac9dbSNicholas Bellinger 15780fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); 1579c66ac9dbSNicholas Bellinger } 1580c66ac9dbSNicholas Bellinger 1581c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_udev_path( 1582c66ac9dbSNicholas Bellinger void *p, 1583c66ac9dbSNicholas Bellinger const char *page, 1584c66ac9dbSNicholas Bellinger size_t count) 1585c66ac9dbSNicholas Bellinger { 15860fd97ccfSChristoph Hellwig struct se_device *dev = p; 15870fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1588c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1589c66ac9dbSNicholas Bellinger 1590c66ac9dbSNicholas Bellinger if (count > (SE_UDEV_PATH_LEN-1)) { 15916708bb27SAndy Grover pr_err("udev_path count: %d exceeds" 1592c66ac9dbSNicholas Bellinger " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 1593c66ac9dbSNicholas Bellinger SE_UDEV_PATH_LEN-1); 1594c66ac9dbSNicholas Bellinger return -EINVAL; 1595c66ac9dbSNicholas Bellinger } 1596c66ac9dbSNicholas Bellinger 15970fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, 1598c66ac9dbSNicholas Bellinger "%s", page); 15993011684cSDan Carpenter if (!read_bytes) 16003011684cSDan Carpenter return -EINVAL; 16010fd97ccfSChristoph Hellwig if (dev->udev_path[read_bytes - 1] == '\n') 16020fd97ccfSChristoph Hellwig dev->udev_path[read_bytes - 1] = '\0'; 16030877eafdSSebastian Andrzej Siewior 16040fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_UDEV_PATH; 16053011684cSDan Carpenter 16066708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 1607c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 16080fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 16090fd97ccfSChristoph Hellwig dev->udev_path); 1610c66ac9dbSNicholas Bellinger 1611c66ac9dbSNicholas Bellinger return read_bytes; 1612c66ac9dbSNicholas Bellinger } 1613c66ac9dbSNicholas Bellinger 1614c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { 1615c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1616c66ac9dbSNicholas Bellinger .ca_name = "udev_path", 1617c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1618c66ac9dbSNicholas Bellinger .show = target_core_show_dev_udev_path, 1619c66ac9dbSNicholas Bellinger .store = target_core_store_dev_udev_path, 1620c66ac9dbSNicholas Bellinger }; 1621c66ac9dbSNicholas Bellinger 162264146db7SAndy Grover static ssize_t target_core_show_dev_enable(void *p, char *page) 162364146db7SAndy Grover { 162464146db7SAndy Grover struct se_device *dev = p; 162564146db7SAndy Grover 162664146db7SAndy Grover return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); 162764146db7SAndy Grover } 162864146db7SAndy Grover 1629c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_enable( 1630c66ac9dbSNicholas Bellinger void *p, 1631c66ac9dbSNicholas Bellinger const char *page, 1632c66ac9dbSNicholas Bellinger size_t count) 1633c66ac9dbSNicholas Bellinger { 16340fd97ccfSChristoph Hellwig struct se_device *dev = p; 1635c66ac9dbSNicholas Bellinger char *ptr; 16360fd97ccfSChristoph Hellwig int ret; 1637c66ac9dbSNicholas Bellinger 1638c66ac9dbSNicholas Bellinger ptr = strstr(page, "1"); 16396708bb27SAndy Grover if (!ptr) { 16406708bb27SAndy Grover pr_err("For dev_enable ops, only valid value" 1641c66ac9dbSNicholas Bellinger " is \"1\"\n"); 1642c66ac9dbSNicholas Bellinger return -EINVAL; 1643c66ac9dbSNicholas Bellinger } 1644c66ac9dbSNicholas Bellinger 16450fd97ccfSChristoph Hellwig ret = target_configure_device(dev); 16460fd97ccfSChristoph Hellwig if (ret) 16470fd97ccfSChristoph Hellwig return ret; 1648c66ac9dbSNicholas Bellinger return count; 1649c66ac9dbSNicholas Bellinger } 1650c66ac9dbSNicholas Bellinger 1651c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_enable = { 1652c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1653c66ac9dbSNicholas Bellinger .ca_name = "enable", 165464146db7SAndy Grover .ca_mode = S_IRUGO | S_IWUSR }, 165564146db7SAndy Grover .show = target_core_show_dev_enable, 1656c66ac9dbSNicholas Bellinger .store = target_core_store_dev_enable, 1657c66ac9dbSNicholas Bellinger }; 1658c66ac9dbSNicholas Bellinger 1659c66ac9dbSNicholas Bellinger static ssize_t target_core_show_alua_lu_gp(void *p, char *page) 1660c66ac9dbSNicholas Bellinger { 16610fd97ccfSChristoph Hellwig struct se_device *dev = p; 1662c66ac9dbSNicholas Bellinger struct config_item *lu_ci; 1663c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 1664c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1665c66ac9dbSNicholas Bellinger ssize_t len = 0; 1666c66ac9dbSNicholas Bellinger 1667c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 1668c87fbd56SChristoph Hellwig if (!lu_gp_mem) 1669c87fbd56SChristoph Hellwig return 0; 1670c66ac9dbSNicholas Bellinger 1671c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1672c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 16736708bb27SAndy Grover if (lu_gp) { 1674c66ac9dbSNicholas Bellinger lu_ci = &lu_gp->lu_gp_group.cg_item; 1675c66ac9dbSNicholas Bellinger len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 1676c66ac9dbSNicholas Bellinger config_item_name(lu_ci), lu_gp->lu_gp_id); 1677c66ac9dbSNicholas Bellinger } 1678c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1679c66ac9dbSNicholas Bellinger 1680c66ac9dbSNicholas Bellinger return len; 1681c66ac9dbSNicholas Bellinger } 1682c66ac9dbSNicholas Bellinger 1683c66ac9dbSNicholas Bellinger static ssize_t target_core_store_alua_lu_gp( 1684c66ac9dbSNicholas Bellinger void *p, 1685c66ac9dbSNicholas Bellinger const char *page, 1686c66ac9dbSNicholas Bellinger size_t count) 1687c66ac9dbSNicholas Bellinger { 16880fd97ccfSChristoph Hellwig struct se_device *dev = p; 16890fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1690c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 1691c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1692c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 1693c66ac9dbSNicholas Bellinger int move = 0; 1694c66ac9dbSNicholas Bellinger 1695c87fbd56SChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 1696c87fbd56SChristoph Hellwig if (!lu_gp_mem) 1697c87fbd56SChristoph Hellwig return 0; 1698c87fbd56SChristoph Hellwig 1699c66ac9dbSNicholas Bellinger if (count > LU_GROUP_NAME_BUF) { 17006708bb27SAndy Grover pr_err("ALUA LU Group Alias too large!\n"); 1701c66ac9dbSNicholas Bellinger return -EINVAL; 1702c66ac9dbSNicholas Bellinger } 1703c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 1704c66ac9dbSNicholas Bellinger memcpy(buf, page, count); 1705c66ac9dbSNicholas Bellinger /* 1706c66ac9dbSNicholas Bellinger * Any ALUA logical unit alias besides "NULL" means we will be 1707c66ac9dbSNicholas Bellinger * making a new group association. 1708c66ac9dbSNicholas Bellinger */ 1709c66ac9dbSNicholas Bellinger if (strcmp(strstrip(buf), "NULL")) { 1710c66ac9dbSNicholas Bellinger /* 1711c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name() will increment reference to 1712c66ac9dbSNicholas Bellinger * struct t10_alua_lu_gp. This reference is released with 1713c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name below(). 1714c66ac9dbSNicholas Bellinger */ 1715c66ac9dbSNicholas Bellinger lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 17166708bb27SAndy Grover if (!lu_gp_new) 1717c66ac9dbSNicholas Bellinger return -ENODEV; 1718c66ac9dbSNicholas Bellinger } 1719c66ac9dbSNicholas Bellinger 1720c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1721c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 17226708bb27SAndy Grover if (lu_gp) { 1723c66ac9dbSNicholas Bellinger /* 1724c66ac9dbSNicholas Bellinger * Clearing an existing lu_gp association, and replacing 1725c66ac9dbSNicholas Bellinger * with NULL 1726c66ac9dbSNicholas Bellinger */ 17276708bb27SAndy Grover if (!lu_gp_new) { 17286708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 1729c66ac9dbSNicholas Bellinger " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 1730c66ac9dbSNicholas Bellinger " %hu\n", 1731c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 17320fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 1733c66ac9dbSNicholas Bellinger config_item_name(&lu_gp->lu_gp_group.cg_item), 1734c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 1735c66ac9dbSNicholas Bellinger 1736c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1737c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1738c66ac9dbSNicholas Bellinger 1739c66ac9dbSNicholas Bellinger return count; 1740c66ac9dbSNicholas Bellinger } 1741c66ac9dbSNicholas Bellinger /* 1742c66ac9dbSNicholas Bellinger * Removing existing association of lu_gp_mem with lu_gp 1743c66ac9dbSNicholas Bellinger */ 1744c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1745c66ac9dbSNicholas Bellinger move = 1; 1746c66ac9dbSNicholas Bellinger } 1747c66ac9dbSNicholas Bellinger /* 1748c66ac9dbSNicholas Bellinger * Associate lu_gp_mem with lu_gp_new. 1749c66ac9dbSNicholas Bellinger */ 1750c66ac9dbSNicholas Bellinger __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 1751c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1752c66ac9dbSNicholas Bellinger 17536708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 1754c66ac9dbSNicholas Bellinger " core/alua/lu_gps/%s, ID: %hu\n", 1755c66ac9dbSNicholas Bellinger (move) ? "Moving" : "Adding", 1756c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 17570fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 1758c66ac9dbSNicholas Bellinger config_item_name(&lu_gp_new->lu_gp_group.cg_item), 1759c66ac9dbSNicholas Bellinger lu_gp_new->lu_gp_id); 1760c66ac9dbSNicholas Bellinger 1761c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 1762c66ac9dbSNicholas Bellinger return count; 1763c66ac9dbSNicholas Bellinger } 1764c66ac9dbSNicholas Bellinger 1765c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { 1766c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1767c66ac9dbSNicholas Bellinger .ca_name = "alua_lu_gp", 1768c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1769c66ac9dbSNicholas Bellinger .show = target_core_show_alua_lu_gp, 1770c66ac9dbSNicholas Bellinger .store = target_core_store_alua_lu_gp, 1771c66ac9dbSNicholas Bellinger }; 1772c66ac9dbSNicholas Bellinger 1773229d4f11SHannes Reinecke static ssize_t target_core_show_dev_lba_map(void *p, char *page) 1774229d4f11SHannes Reinecke { 1775229d4f11SHannes Reinecke struct se_device *dev = p; 1776229d4f11SHannes Reinecke struct t10_alua_lba_map *map; 1777229d4f11SHannes Reinecke struct t10_alua_lba_map_member *mem; 1778229d4f11SHannes Reinecke char *b = page; 1779229d4f11SHannes Reinecke int bl = 0; 1780229d4f11SHannes Reinecke char state; 1781229d4f11SHannes Reinecke 1782229d4f11SHannes Reinecke spin_lock(&dev->t10_alua.lba_map_lock); 1783229d4f11SHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 1784229d4f11SHannes Reinecke bl += sprintf(b + bl, "%u %u\n", 1785229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_size, 1786229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_multiplier); 1787229d4f11SHannes Reinecke list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { 1788229d4f11SHannes Reinecke bl += sprintf(b + bl, "%llu %llu", 1789229d4f11SHannes Reinecke map->lba_map_first_lba, map->lba_map_last_lba); 1790229d4f11SHannes Reinecke list_for_each_entry(mem, &map->lba_map_mem_list, 1791229d4f11SHannes Reinecke lba_map_mem_list) { 1792229d4f11SHannes Reinecke switch (mem->lba_map_mem_alua_state) { 1793229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: 1794229d4f11SHannes Reinecke state = 'O'; 1795229d4f11SHannes Reinecke break; 1796229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: 1797229d4f11SHannes Reinecke state = 'A'; 1798229d4f11SHannes Reinecke break; 1799229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_STANDBY: 1800229d4f11SHannes Reinecke state = 'S'; 1801229d4f11SHannes Reinecke break; 1802229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_UNAVAILABLE: 1803229d4f11SHannes Reinecke state = 'U'; 1804229d4f11SHannes Reinecke break; 1805229d4f11SHannes Reinecke default: 1806229d4f11SHannes Reinecke state = '.'; 1807229d4f11SHannes Reinecke break; 1808229d4f11SHannes Reinecke } 1809229d4f11SHannes Reinecke bl += sprintf(b + bl, " %d:%c", 1810229d4f11SHannes Reinecke mem->lba_map_mem_alua_pg_id, state); 1811229d4f11SHannes Reinecke } 1812229d4f11SHannes Reinecke bl += sprintf(b + bl, "\n"); 1813229d4f11SHannes Reinecke } 1814229d4f11SHannes Reinecke spin_unlock(&dev->t10_alua.lba_map_lock); 1815229d4f11SHannes Reinecke return bl; 1816229d4f11SHannes Reinecke } 1817229d4f11SHannes Reinecke 1818229d4f11SHannes Reinecke static ssize_t target_core_store_dev_lba_map( 1819229d4f11SHannes Reinecke void *p, 1820229d4f11SHannes Reinecke const char *page, 1821229d4f11SHannes Reinecke size_t count) 1822229d4f11SHannes Reinecke { 1823229d4f11SHannes Reinecke struct se_device *dev = p; 1824229d4f11SHannes Reinecke struct t10_alua_lba_map *lba_map = NULL; 1825229d4f11SHannes Reinecke struct list_head lba_list; 1826229d4f11SHannes Reinecke char *map_entries, *ptr; 1827229d4f11SHannes Reinecke char state; 1828229d4f11SHannes Reinecke int pg_num = -1, pg; 1829229d4f11SHannes Reinecke int ret = 0, num = 0, pg_id, alua_state; 1830229d4f11SHannes Reinecke unsigned long start_lba = -1, end_lba = -1; 1831229d4f11SHannes Reinecke unsigned long segment_size = -1, segment_mult = -1; 1832229d4f11SHannes Reinecke 1833229d4f11SHannes Reinecke map_entries = kstrdup(page, GFP_KERNEL); 1834229d4f11SHannes Reinecke if (!map_entries) 1835229d4f11SHannes Reinecke return -ENOMEM; 1836229d4f11SHannes Reinecke 1837229d4f11SHannes Reinecke INIT_LIST_HEAD(&lba_list); 1838229d4f11SHannes Reinecke while ((ptr = strsep(&map_entries, "\n")) != NULL) { 1839229d4f11SHannes Reinecke if (!*ptr) 1840229d4f11SHannes Reinecke continue; 1841229d4f11SHannes Reinecke 1842229d4f11SHannes Reinecke if (num == 0) { 1843229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu\n", 1844229d4f11SHannes Reinecke &segment_size, &segment_mult) != 2) { 1845229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 1846229d4f11SHannes Reinecke ret = -EINVAL; 1847229d4f11SHannes Reinecke break; 1848229d4f11SHannes Reinecke } 1849229d4f11SHannes Reinecke num++; 1850229d4f11SHannes Reinecke continue; 1851229d4f11SHannes Reinecke } 1852229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { 1853229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 1854229d4f11SHannes Reinecke ret = -EINVAL; 1855229d4f11SHannes Reinecke break; 1856229d4f11SHannes Reinecke } 1857229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1858229d4f11SHannes Reinecke if (!ptr) { 1859229d4f11SHannes Reinecke pr_err("Invalid line %d, missing end lba\n", num); 1860229d4f11SHannes Reinecke ret = -EINVAL; 1861229d4f11SHannes Reinecke break; 1862229d4f11SHannes Reinecke } 1863229d4f11SHannes Reinecke ptr++; 1864229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1865229d4f11SHannes Reinecke if (!ptr) { 1866229d4f11SHannes Reinecke pr_err("Invalid line %d, missing state definitions\n", 1867229d4f11SHannes Reinecke num); 1868229d4f11SHannes Reinecke ret = -EINVAL; 1869229d4f11SHannes Reinecke break; 1870229d4f11SHannes Reinecke } 1871229d4f11SHannes Reinecke ptr++; 1872229d4f11SHannes Reinecke lba_map = core_alua_allocate_lba_map(&lba_list, 1873229d4f11SHannes Reinecke start_lba, end_lba); 1874229d4f11SHannes Reinecke if (IS_ERR(lba_map)) { 1875229d4f11SHannes Reinecke ret = PTR_ERR(lba_map); 1876229d4f11SHannes Reinecke break; 1877229d4f11SHannes Reinecke } 1878229d4f11SHannes Reinecke pg = 0; 1879229d4f11SHannes Reinecke while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { 1880229d4f11SHannes Reinecke switch (state) { 1881229d4f11SHannes Reinecke case 'O': 1882229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; 1883229d4f11SHannes Reinecke break; 1884229d4f11SHannes Reinecke case 'A': 1885229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; 1886229d4f11SHannes Reinecke break; 1887229d4f11SHannes Reinecke case 'S': 1888229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_STANDBY; 1889229d4f11SHannes Reinecke break; 1890229d4f11SHannes Reinecke case 'U': 1891229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; 1892229d4f11SHannes Reinecke break; 1893229d4f11SHannes Reinecke default: 1894229d4f11SHannes Reinecke pr_err("Invalid ALUA state '%c'\n", state); 1895229d4f11SHannes Reinecke ret = -EINVAL; 1896229d4f11SHannes Reinecke goto out; 1897229d4f11SHannes Reinecke } 1898229d4f11SHannes Reinecke 1899229d4f11SHannes Reinecke ret = core_alua_allocate_lba_map_mem(lba_map, 1900229d4f11SHannes Reinecke pg_id, alua_state); 1901229d4f11SHannes Reinecke if (ret) { 1902229d4f11SHannes Reinecke pr_err("Invalid target descriptor %d:%c " 1903229d4f11SHannes Reinecke "at line %d\n", 1904229d4f11SHannes Reinecke pg_id, state, num); 1905229d4f11SHannes Reinecke break; 1906229d4f11SHannes Reinecke } 1907229d4f11SHannes Reinecke pg++; 1908229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1909229d4f11SHannes Reinecke if (ptr) 1910229d4f11SHannes Reinecke ptr++; 1911229d4f11SHannes Reinecke else 1912229d4f11SHannes Reinecke break; 1913229d4f11SHannes Reinecke } 1914229d4f11SHannes Reinecke if (pg_num == -1) 1915229d4f11SHannes Reinecke pg_num = pg; 1916229d4f11SHannes Reinecke else if (pg != pg_num) { 1917229d4f11SHannes Reinecke pr_err("Only %d from %d port groups definitions " 1918229d4f11SHannes Reinecke "at line %d\n", pg, pg_num, num); 1919229d4f11SHannes Reinecke ret = -EINVAL; 1920229d4f11SHannes Reinecke break; 1921229d4f11SHannes Reinecke } 1922229d4f11SHannes Reinecke num++; 1923229d4f11SHannes Reinecke } 1924229d4f11SHannes Reinecke out: 1925229d4f11SHannes Reinecke if (ret) { 1926229d4f11SHannes Reinecke core_alua_free_lba_map(&lba_list); 1927229d4f11SHannes Reinecke count = ret; 1928229d4f11SHannes Reinecke } else 1929229d4f11SHannes Reinecke core_alua_set_lba_map(dev, &lba_list, 1930229d4f11SHannes Reinecke segment_size, segment_mult); 1931229d4f11SHannes Reinecke kfree(map_entries); 1932229d4f11SHannes Reinecke return count; 1933229d4f11SHannes Reinecke } 1934229d4f11SHannes Reinecke 1935229d4f11SHannes Reinecke static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { 1936229d4f11SHannes Reinecke .attr = { .ca_owner = THIS_MODULE, 1937229d4f11SHannes Reinecke .ca_name = "lba_map", 1938229d4f11SHannes Reinecke .ca_mode = S_IRUGO | S_IWUSR }, 1939229d4f11SHannes Reinecke .show = target_core_show_dev_lba_map, 1940229d4f11SHannes Reinecke .store = target_core_store_dev_lba_map, 1941229d4f11SHannes Reinecke }; 1942229d4f11SHannes Reinecke 194373112edcSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrs[] = { 1944c66ac9dbSNicholas Bellinger &target_core_attr_dev_info.attr, 1945c66ac9dbSNicholas Bellinger &target_core_attr_dev_control.attr, 1946c66ac9dbSNicholas Bellinger &target_core_attr_dev_alias.attr, 1947c66ac9dbSNicholas Bellinger &target_core_attr_dev_udev_path.attr, 1948c66ac9dbSNicholas Bellinger &target_core_attr_dev_enable.attr, 1949c66ac9dbSNicholas Bellinger &target_core_attr_dev_alua_lu_gp.attr, 1950229d4f11SHannes Reinecke &target_core_attr_dev_lba_map.attr, 1951c66ac9dbSNicholas Bellinger NULL, 1952c66ac9dbSNicholas Bellinger }; 1953c66ac9dbSNicholas Bellinger 1954c66ac9dbSNicholas Bellinger static void target_core_dev_release(struct config_item *item) 1955c66ac9dbSNicholas Bellinger { 19560fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 19570fd97ccfSChristoph Hellwig struct se_device *dev = 19580fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1959c66ac9dbSNicholas Bellinger 1960c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 19610fd97ccfSChristoph Hellwig target_free_device(dev); 1962c66ac9dbSNicholas Bellinger } 1963c66ac9dbSNicholas Bellinger 1964c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_show(struct config_item *item, 1965c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 1966c66ac9dbSNicholas Bellinger char *page) 1967c66ac9dbSNicholas Bellinger { 19680fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 19690fd97ccfSChristoph Hellwig struct se_device *dev = 19700fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1971c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 1972c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 1973c66ac9dbSNicholas Bellinger 19746708bb27SAndy Grover if (!tc_attr->show) 1975c66ac9dbSNicholas Bellinger return -EINVAL; 1976c66ac9dbSNicholas Bellinger 19770fd97ccfSChristoph Hellwig return tc_attr->show(dev, page); 1978c66ac9dbSNicholas Bellinger } 1979c66ac9dbSNicholas Bellinger 1980c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_store(struct config_item *item, 1981c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 1982c66ac9dbSNicholas Bellinger const char *page, size_t count) 1983c66ac9dbSNicholas Bellinger { 19840fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 19850fd97ccfSChristoph Hellwig struct se_device *dev = 19860fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1987c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 1988c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 1989c66ac9dbSNicholas Bellinger 19906708bb27SAndy Grover if (!tc_attr->store) 1991c66ac9dbSNicholas Bellinger return -EINVAL; 1992c66ac9dbSNicholas Bellinger 19930fd97ccfSChristoph Hellwig return tc_attr->store(dev, page, count); 1994c66ac9dbSNicholas Bellinger } 1995c66ac9dbSNicholas Bellinger 1996c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_item_ops = { 1997c66ac9dbSNicholas Bellinger .release = target_core_dev_release, 1998c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_show, 1999c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_store, 2000c66ac9dbSNicholas Bellinger }; 2001c66ac9dbSNicholas Bellinger 200273112edcSNicholas Bellinger TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); 2003c66ac9dbSNicholas Bellinger 200473112edcSNicholas Bellinger /* End functions for struct config_item_type tb_dev_cit */ 2005c66ac9dbSNicholas Bellinger 2006c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 2007c66ac9dbSNicholas Bellinger 2008c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); 2009c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ 2010c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 2011c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 2012c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2013c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name, \ 2014c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_store_attr_##_name); 2015c66ac9dbSNicholas Bellinger 2016c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ 2017c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 2018c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 2019c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2020c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name); 2021c66ac9dbSNicholas Bellinger 2022c66ac9dbSNicholas Bellinger /* 2023c66ac9dbSNicholas Bellinger * lu_gp_id 2024c66ac9dbSNicholas Bellinger */ 2025c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( 2026c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 2027c66ac9dbSNicholas Bellinger char *page) 2028c66ac9dbSNicholas Bellinger { 20296708bb27SAndy Grover if (!lu_gp->lu_gp_valid_id) 2030c66ac9dbSNicholas Bellinger return 0; 2031c66ac9dbSNicholas Bellinger 2032c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 2033c66ac9dbSNicholas Bellinger } 2034c66ac9dbSNicholas Bellinger 2035c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( 2036c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 2037c66ac9dbSNicholas Bellinger const char *page, 2038c66ac9dbSNicholas Bellinger size_t count) 2039c66ac9dbSNicholas Bellinger { 2040c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 2041c66ac9dbSNicholas Bellinger unsigned long lu_gp_id; 2042c66ac9dbSNicholas Bellinger int ret; 2043c66ac9dbSNicholas Bellinger 204457103d7fSJingoo Han ret = kstrtoul(page, 0, &lu_gp_id); 2045c66ac9dbSNicholas Bellinger if (ret < 0) { 204657103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2047c66ac9dbSNicholas Bellinger " lu_gp_id\n", ret); 204857103d7fSJingoo Han return ret; 2049c66ac9dbSNicholas Bellinger } 2050c66ac9dbSNicholas Bellinger if (lu_gp_id > 0x0000ffff) { 20516708bb27SAndy Grover pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 2052c66ac9dbSNicholas Bellinger " 0x0000ffff\n", lu_gp_id); 2053c66ac9dbSNicholas Bellinger return -EINVAL; 2054c66ac9dbSNicholas Bellinger } 2055c66ac9dbSNicholas Bellinger 2056c66ac9dbSNicholas Bellinger ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 2057c66ac9dbSNicholas Bellinger if (ret < 0) 2058c66ac9dbSNicholas Bellinger return -EINVAL; 2059c66ac9dbSNicholas Bellinger 20606708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 2061c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s to ID: %hu\n", 2062c66ac9dbSNicholas Bellinger config_item_name(&alua_lu_gp_cg->cg_item), 2063c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2064c66ac9dbSNicholas Bellinger 2065c66ac9dbSNicholas Bellinger return count; 2066c66ac9dbSNicholas Bellinger } 2067c66ac9dbSNicholas Bellinger 2068c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); 2069c66ac9dbSNicholas Bellinger 2070c66ac9dbSNicholas Bellinger /* 2071c66ac9dbSNicholas Bellinger * members 2072c66ac9dbSNicholas Bellinger */ 2073c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_members( 2074c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 2075c66ac9dbSNicholas Bellinger char *page) 2076c66ac9dbSNicholas Bellinger { 2077c66ac9dbSNicholas Bellinger struct se_device *dev; 2078c66ac9dbSNicholas Bellinger struct se_hba *hba; 2079c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2080c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2081c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 2082c66ac9dbSNicholas Bellinger 2083c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 2084c66ac9dbSNicholas Bellinger 2085c66ac9dbSNicholas Bellinger spin_lock(&lu_gp->lu_gp_lock); 2086c66ac9dbSNicholas Bellinger list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 2087c66ac9dbSNicholas Bellinger dev = lu_gp_mem->lu_gp_mem_dev; 20880fd97ccfSChristoph Hellwig hba = dev->se_hba; 2089c66ac9dbSNicholas Bellinger 2090c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 2091c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 20920fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item)); 2093c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2094c66ac9dbSNicholas Bellinger 2095c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 20966708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2097c66ac9dbSNicholas Bellinger "_members buffer\n"); 2098c66ac9dbSNicholas Bellinger break; 2099c66ac9dbSNicholas Bellinger } 2100c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2101c66ac9dbSNicholas Bellinger len += cur_len; 2102c66ac9dbSNicholas Bellinger } 2103c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp->lu_gp_lock); 2104c66ac9dbSNicholas Bellinger 2105c66ac9dbSNicholas Bellinger return len; 2106c66ac9dbSNicholas Bellinger } 2107c66ac9dbSNicholas Bellinger 2108c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR_RO(members); 2109c66ac9dbSNicholas Bellinger 2110c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); 2111c66ac9dbSNicholas Bellinger 2112c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 2113c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_lu_gp_id.attr, 2114c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_members.attr, 2115c66ac9dbSNicholas Bellinger NULL, 2116c66ac9dbSNicholas Bellinger }; 2117c66ac9dbSNicholas Bellinger 21181f6fe7cbSNicholas Bellinger static void target_core_alua_lu_gp_release(struct config_item *item) 21191f6fe7cbSNicholas Bellinger { 21201f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 21211f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 21221f6fe7cbSNicholas Bellinger 21231f6fe7cbSNicholas Bellinger core_alua_free_lu_gp(lu_gp); 21241f6fe7cbSNicholas Bellinger } 21251f6fe7cbSNicholas Bellinger 2126c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_lu_gp_ops = { 21271f6fe7cbSNicholas Bellinger .release = target_core_alua_lu_gp_release, 2128c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_lu_gp_attr_show, 2129c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_lu_gp_attr_store, 2130c66ac9dbSNicholas Bellinger }; 2131c66ac9dbSNicholas Bellinger 2132c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gp_cit = { 2133c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_lu_gp_ops, 2134c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_lu_gp_attrs, 2135c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2136c66ac9dbSNicholas Bellinger }; 2137c66ac9dbSNicholas Bellinger 2138c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 2139c66ac9dbSNicholas Bellinger 2140c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 2141c66ac9dbSNicholas Bellinger 2142c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_lu_gp( 2143c66ac9dbSNicholas Bellinger struct config_group *group, 2144c66ac9dbSNicholas Bellinger const char *name) 2145c66ac9dbSNicholas Bellinger { 2146c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2147c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = NULL; 2148c66ac9dbSNicholas Bellinger struct config_item *alua_lu_gp_ci = NULL; 2149c66ac9dbSNicholas Bellinger 2150c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp(name, 0); 2151c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 2152c66ac9dbSNicholas Bellinger return NULL; 2153c66ac9dbSNicholas Bellinger 2154c66ac9dbSNicholas Bellinger alua_lu_gp_cg = &lu_gp->lu_gp_group; 2155c66ac9dbSNicholas Bellinger alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 2156c66ac9dbSNicholas Bellinger 2157c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_lu_gp_cg, name, 2158c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 2159c66ac9dbSNicholas Bellinger 21606708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 2161c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s\n", 2162c66ac9dbSNicholas Bellinger config_item_name(alua_lu_gp_ci)); 2163c66ac9dbSNicholas Bellinger 2164c66ac9dbSNicholas Bellinger return alua_lu_gp_cg; 2165c66ac9dbSNicholas Bellinger 2166c66ac9dbSNicholas Bellinger } 2167c66ac9dbSNicholas Bellinger 2168c66ac9dbSNicholas Bellinger static void target_core_alua_drop_lu_gp( 2169c66ac9dbSNicholas Bellinger struct config_group *group, 2170c66ac9dbSNicholas Bellinger struct config_item *item) 2171c66ac9dbSNicholas Bellinger { 2172c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 2173c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 2174c66ac9dbSNicholas Bellinger 21756708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 2176c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s, ID: %hu\n", 2177c66ac9dbSNicholas Bellinger config_item_name(item), lu_gp->lu_gp_id); 21781f6fe7cbSNicholas Bellinger /* 21791f6fe7cbSNicholas Bellinger * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 21801f6fe7cbSNicholas Bellinger * -> target_core_alua_lu_gp_release() 21811f6fe7cbSNicholas Bellinger */ 2182c66ac9dbSNicholas Bellinger config_item_put(item); 2183c66ac9dbSNicholas Bellinger } 2184c66ac9dbSNicholas Bellinger 2185c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 2186c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_lu_gp, 2187c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_lu_gp, 2188c66ac9dbSNicholas Bellinger }; 2189c66ac9dbSNicholas Bellinger 2190c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gps_cit = { 2191c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2192c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_lu_gps_group_ops, 2193c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2194c66ac9dbSNicholas Bellinger }; 2195c66ac9dbSNicholas Bellinger 2196c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 2197c66ac9dbSNicholas Bellinger 2198c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2199c66ac9dbSNicholas Bellinger 2200c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); 2201c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ 2202c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 2203c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 2204c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2205c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name, \ 2206c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_store_attr_##_name); 2207c66ac9dbSNicholas Bellinger 2208c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ 2209c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 2210c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 2211c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2212c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name); 2213c66ac9dbSNicholas Bellinger 2214c66ac9dbSNicholas Bellinger /* 2215c66ac9dbSNicholas Bellinger * alua_access_state 2216c66ac9dbSNicholas Bellinger */ 2217c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( 2218c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2219c66ac9dbSNicholas Bellinger char *page) 2220c66ac9dbSNicholas Bellinger { 2221c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", 2222c66ac9dbSNicholas Bellinger atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); 2223c66ac9dbSNicholas Bellinger } 2224c66ac9dbSNicholas Bellinger 2225c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( 2226c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2227c66ac9dbSNicholas Bellinger const char *page, 2228c66ac9dbSNicholas Bellinger size_t count) 2229c66ac9dbSNicholas Bellinger { 22300fd97ccfSChristoph Hellwig struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; 2231c66ac9dbSNicholas Bellinger unsigned long tmp; 2232c66ac9dbSNicholas Bellinger int new_state, ret; 2233c66ac9dbSNicholas Bellinger 22346708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 2235125d0119SHannes Reinecke pr_err("Unable to do implicit ALUA on non valid" 2236c66ac9dbSNicholas Bellinger " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); 2237c66ac9dbSNicholas Bellinger return -EINVAL; 2238c66ac9dbSNicholas Bellinger } 2239f1453773SNicholas Bellinger if (!(dev->dev_flags & DF_CONFIGURED)) { 2240f1453773SNicholas Bellinger pr_err("Unable to set alua_access_state while device is" 2241f1453773SNicholas Bellinger " not configured\n"); 2242f1453773SNicholas Bellinger return -ENODEV; 2243f1453773SNicholas Bellinger } 2244c66ac9dbSNicholas Bellinger 224557103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2246c66ac9dbSNicholas Bellinger if (ret < 0) { 22476708bb27SAndy Grover pr_err("Unable to extract new ALUA access state from" 2248c66ac9dbSNicholas Bellinger " %s\n", page); 224957103d7fSJingoo Han return ret; 2250c66ac9dbSNicholas Bellinger } 2251c66ac9dbSNicholas Bellinger new_state = (int)tmp; 2252c66ac9dbSNicholas Bellinger 2253125d0119SHannes Reinecke if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { 2254125d0119SHannes Reinecke pr_err("Unable to process implicit configfs ALUA" 2255125d0119SHannes Reinecke " transition while TPGS_IMPLICIT_ALUA is disabled\n"); 2256c66ac9dbSNicholas Bellinger return -EINVAL; 2257c66ac9dbSNicholas Bellinger } 2258c66094bfSHannes Reinecke if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && 2259c66094bfSHannes Reinecke new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { 2260c66094bfSHannes Reinecke /* LBA DEPENDENT is only allowed with implicit ALUA */ 2261c66094bfSHannes Reinecke pr_err("Unable to process implicit configfs ALUA transition" 2262c66094bfSHannes Reinecke " while explicit ALUA management is enabled\n"); 2263c66094bfSHannes Reinecke return -EINVAL; 2264c66094bfSHannes Reinecke } 2265c66ac9dbSNicholas Bellinger 22660fd97ccfSChristoph Hellwig ret = core_alua_do_port_transition(tg_pt_gp, dev, 2267c66ac9dbSNicholas Bellinger NULL, NULL, new_state, 0); 2268c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; 2269c66ac9dbSNicholas Bellinger } 2270c66ac9dbSNicholas Bellinger 2271c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); 2272c66ac9dbSNicholas Bellinger 2273c66ac9dbSNicholas Bellinger /* 2274c66ac9dbSNicholas Bellinger * alua_access_status 2275c66ac9dbSNicholas Bellinger */ 2276c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( 2277c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2278c66ac9dbSNicholas Bellinger char *page) 2279c66ac9dbSNicholas Bellinger { 2280c66ac9dbSNicholas Bellinger return sprintf(page, "%s\n", 2281c66ac9dbSNicholas Bellinger core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2282c66ac9dbSNicholas Bellinger } 2283c66ac9dbSNicholas Bellinger 2284c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( 2285c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2286c66ac9dbSNicholas Bellinger const char *page, 2287c66ac9dbSNicholas Bellinger size_t count) 2288c66ac9dbSNicholas Bellinger { 2289c66ac9dbSNicholas Bellinger unsigned long tmp; 2290c66ac9dbSNicholas Bellinger int new_status, ret; 2291c66ac9dbSNicholas Bellinger 22926708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 22936708bb27SAndy Grover pr_err("Unable to do set ALUA access status on non" 2294c66ac9dbSNicholas Bellinger " valid tg_pt_gp ID: %hu\n", 2295c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_valid_id); 2296c66ac9dbSNicholas Bellinger return -EINVAL; 2297c66ac9dbSNicholas Bellinger } 2298c66ac9dbSNicholas Bellinger 229957103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2300c66ac9dbSNicholas Bellinger if (ret < 0) { 23016708bb27SAndy Grover pr_err("Unable to extract new ALUA access status" 2302c66ac9dbSNicholas Bellinger " from %s\n", page); 230357103d7fSJingoo Han return ret; 2304c66ac9dbSNicholas Bellinger } 2305c66ac9dbSNicholas Bellinger new_status = (int)tmp; 2306c66ac9dbSNicholas Bellinger 2307c66ac9dbSNicholas Bellinger if ((new_status != ALUA_STATUS_NONE) && 2308125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && 2309125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { 23106708bb27SAndy Grover pr_err("Illegal ALUA access status: 0x%02x\n", 2311c66ac9dbSNicholas Bellinger new_status); 2312c66ac9dbSNicholas Bellinger return -EINVAL; 2313c66ac9dbSNicholas Bellinger } 2314c66ac9dbSNicholas Bellinger 2315c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2316c66ac9dbSNicholas Bellinger return count; 2317c66ac9dbSNicholas Bellinger } 2318c66ac9dbSNicholas Bellinger 2319c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); 2320c66ac9dbSNicholas Bellinger 2321c66ac9dbSNicholas Bellinger /* 2322c66ac9dbSNicholas Bellinger * alua_access_type 2323c66ac9dbSNicholas Bellinger */ 2324c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( 2325c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2326c66ac9dbSNicholas Bellinger char *page) 2327c66ac9dbSNicholas Bellinger { 2328c66ac9dbSNicholas Bellinger return core_alua_show_access_type(tg_pt_gp, page); 2329c66ac9dbSNicholas Bellinger } 2330c66ac9dbSNicholas Bellinger 2331c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( 2332c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2333c66ac9dbSNicholas Bellinger const char *page, 2334c66ac9dbSNicholas Bellinger size_t count) 2335c66ac9dbSNicholas Bellinger { 2336c66ac9dbSNicholas Bellinger return core_alua_store_access_type(tg_pt_gp, page, count); 2337c66ac9dbSNicholas Bellinger } 2338c66ac9dbSNicholas Bellinger 2339c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); 2340c66ac9dbSNicholas Bellinger 2341c66ac9dbSNicholas Bellinger /* 23426be526c4SHannes Reinecke * alua_supported_states 23436be526c4SHannes Reinecke */ 2344b0a382c5SHannes Reinecke 2345b0a382c5SHannes Reinecke #define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit) \ 2346b0a382c5SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \ 2347b0a382c5SHannes Reinecke struct t10_alua_tg_pt_gp *t, char *p) \ 2348b0a382c5SHannes Reinecke { \ 2349b0a382c5SHannes Reinecke return sprintf(p, "%d\n", !!(t->_var & _bit)); \ 23506be526c4SHannes Reinecke } 23516be526c4SHannes Reinecke 2352b0a382c5SHannes Reinecke #define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit) \ 2353b0a382c5SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\ 2354b0a382c5SHannes Reinecke struct t10_alua_tg_pt_gp *t, const char *p, size_t c) \ 2355b0a382c5SHannes Reinecke { \ 2356b0a382c5SHannes Reinecke unsigned long tmp; \ 2357b0a382c5SHannes Reinecke int ret; \ 2358b0a382c5SHannes Reinecke \ 2359b0a382c5SHannes Reinecke if (!t->tg_pt_gp_valid_id) { \ 2360b0a382c5SHannes Reinecke pr_err("Unable to do set ##_name ALUA state on non" \ 2361b0a382c5SHannes Reinecke " valid tg_pt_gp ID: %hu\n", \ 2362b0a382c5SHannes Reinecke t->tg_pt_gp_valid_id); \ 2363b0a382c5SHannes Reinecke return -EINVAL; \ 2364b0a382c5SHannes Reinecke } \ 2365b0a382c5SHannes Reinecke \ 2366b0a382c5SHannes Reinecke ret = kstrtoul(p, 0, &tmp); \ 2367b0a382c5SHannes Reinecke if (ret < 0) { \ 2368b0a382c5SHannes Reinecke pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ 2369b0a382c5SHannes Reinecke return -EINVAL; \ 2370b0a382c5SHannes Reinecke } \ 2371b0a382c5SHannes Reinecke if (tmp > 1) { \ 2372b0a382c5SHannes Reinecke pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ 2373b0a382c5SHannes Reinecke return -EINVAL; \ 2374b0a382c5SHannes Reinecke } \ 23751f0b030cSSebastian Herbszt if (tmp) \ 2376b0a382c5SHannes Reinecke t->_var |= _bit; \ 2377b0a382c5SHannes Reinecke else \ 2378b0a382c5SHannes Reinecke t->_var &= ~_bit; \ 2379b0a382c5SHannes Reinecke \ 2380b0a382c5SHannes Reinecke return c; \ 23816be526c4SHannes Reinecke } 23826be526c4SHannes Reinecke 2383b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning, 2384b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_T_SUP); 2385b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning, 2386b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_T_SUP); 2387b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR); 23886be526c4SHannes Reinecke 2389b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline, 2390b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_O_SUP); 2391b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(offline, 2392b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_O_SUP); 2393b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR); 23946be526c4SHannes Reinecke 2395b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent, 2396b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); 2397b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent, 2398b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); 2399c66094bfSHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO); 24006be526c4SHannes Reinecke 2401b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable, 2402b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_U_SUP); 2403b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable, 2404b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_U_SUP); 2405b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR); 24066be526c4SHannes Reinecke 2407b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby, 2408b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_S_SUP); 2409b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(standby, 2410b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_S_SUP); 2411b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR); 2412b0a382c5SHannes Reinecke 2413b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized, 2414b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AO_SUP); 2415b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized, 2416b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AO_SUP); 2417b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR); 2418b0a382c5SHannes Reinecke 2419b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized, 2420b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AN_SUP); 2421b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized, 2422b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AN_SUP); 2423b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR); 24246be526c4SHannes Reinecke 24256be526c4SHannes Reinecke /* 2426c66ac9dbSNicholas Bellinger * alua_write_metadata 2427c66ac9dbSNicholas Bellinger */ 2428c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( 2429c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2430c66ac9dbSNicholas Bellinger char *page) 2431c66ac9dbSNicholas Bellinger { 2432c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); 2433c66ac9dbSNicholas Bellinger } 2434c66ac9dbSNicholas Bellinger 2435c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( 2436c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2437c66ac9dbSNicholas Bellinger const char *page, 2438c66ac9dbSNicholas Bellinger size_t count) 2439c66ac9dbSNicholas Bellinger { 2440c66ac9dbSNicholas Bellinger unsigned long tmp; 2441c66ac9dbSNicholas Bellinger int ret; 2442c66ac9dbSNicholas Bellinger 244357103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2444c66ac9dbSNicholas Bellinger if (ret < 0) { 24456708bb27SAndy Grover pr_err("Unable to extract alua_write_metadata\n"); 244657103d7fSJingoo Han return ret; 2447c66ac9dbSNicholas Bellinger } 2448c66ac9dbSNicholas Bellinger 2449c66ac9dbSNicholas Bellinger if ((tmp != 0) && (tmp != 1)) { 24506708bb27SAndy Grover pr_err("Illegal value for alua_write_metadata:" 2451c66ac9dbSNicholas Bellinger " %lu\n", tmp); 2452c66ac9dbSNicholas Bellinger return -EINVAL; 2453c66ac9dbSNicholas Bellinger } 2454c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2455c66ac9dbSNicholas Bellinger 2456c66ac9dbSNicholas Bellinger return count; 2457c66ac9dbSNicholas Bellinger } 2458c66ac9dbSNicholas Bellinger 2459c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); 2460c66ac9dbSNicholas Bellinger 2461c66ac9dbSNicholas Bellinger 2462c66ac9dbSNicholas Bellinger 2463c66ac9dbSNicholas Bellinger /* 2464c66ac9dbSNicholas Bellinger * nonop_delay_msecs 2465c66ac9dbSNicholas Bellinger */ 2466c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( 2467c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2468c66ac9dbSNicholas Bellinger char *page) 2469c66ac9dbSNicholas Bellinger { 2470c66ac9dbSNicholas Bellinger return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); 2471c66ac9dbSNicholas Bellinger 2472c66ac9dbSNicholas Bellinger } 2473c66ac9dbSNicholas Bellinger 2474c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( 2475c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2476c66ac9dbSNicholas Bellinger const char *page, 2477c66ac9dbSNicholas Bellinger size_t count) 2478c66ac9dbSNicholas Bellinger { 2479c66ac9dbSNicholas Bellinger return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); 2480c66ac9dbSNicholas Bellinger } 2481c66ac9dbSNicholas Bellinger 2482c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); 2483c66ac9dbSNicholas Bellinger 2484c66ac9dbSNicholas Bellinger /* 2485c66ac9dbSNicholas Bellinger * trans_delay_msecs 2486c66ac9dbSNicholas Bellinger */ 2487c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( 2488c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2489c66ac9dbSNicholas Bellinger char *page) 2490c66ac9dbSNicholas Bellinger { 2491c66ac9dbSNicholas Bellinger return core_alua_show_trans_delay_msecs(tg_pt_gp, page); 2492c66ac9dbSNicholas Bellinger } 2493c66ac9dbSNicholas Bellinger 2494c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( 2495c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2496c66ac9dbSNicholas Bellinger const char *page, 2497c66ac9dbSNicholas Bellinger size_t count) 2498c66ac9dbSNicholas Bellinger { 2499c66ac9dbSNicholas Bellinger return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); 2500c66ac9dbSNicholas Bellinger } 2501c66ac9dbSNicholas Bellinger 2502c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); 2503c66ac9dbSNicholas Bellinger 2504c66ac9dbSNicholas Bellinger /* 2505125d0119SHannes Reinecke * implicit_trans_secs 25065b9a4d72SNicholas Bellinger */ 2507125d0119SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs( 25085b9a4d72SNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 25095b9a4d72SNicholas Bellinger char *page) 25105b9a4d72SNicholas Bellinger { 2511125d0119SHannes Reinecke return core_alua_show_implicit_trans_secs(tg_pt_gp, page); 25125b9a4d72SNicholas Bellinger } 25135b9a4d72SNicholas Bellinger 2514125d0119SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs( 25155b9a4d72SNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 25165b9a4d72SNicholas Bellinger const char *page, 25175b9a4d72SNicholas Bellinger size_t count) 25185b9a4d72SNicholas Bellinger { 2519125d0119SHannes Reinecke return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count); 25205b9a4d72SNicholas Bellinger } 25215b9a4d72SNicholas Bellinger 2522125d0119SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR); 25235b9a4d72SNicholas Bellinger 25245b9a4d72SNicholas Bellinger /* 2525c66ac9dbSNicholas Bellinger * preferred 2526c66ac9dbSNicholas Bellinger */ 2527c66ac9dbSNicholas Bellinger 2528c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( 2529c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2530c66ac9dbSNicholas Bellinger char *page) 2531c66ac9dbSNicholas Bellinger { 2532c66ac9dbSNicholas Bellinger return core_alua_show_preferred_bit(tg_pt_gp, page); 2533c66ac9dbSNicholas Bellinger } 2534c66ac9dbSNicholas Bellinger 2535c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( 2536c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2537c66ac9dbSNicholas Bellinger const char *page, 2538c66ac9dbSNicholas Bellinger size_t count) 2539c66ac9dbSNicholas Bellinger { 2540c66ac9dbSNicholas Bellinger return core_alua_store_preferred_bit(tg_pt_gp, page, count); 2541c66ac9dbSNicholas Bellinger } 2542c66ac9dbSNicholas Bellinger 2543c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); 2544c66ac9dbSNicholas Bellinger 2545c66ac9dbSNicholas Bellinger /* 2546c66ac9dbSNicholas Bellinger * tg_pt_gp_id 2547c66ac9dbSNicholas Bellinger */ 2548c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( 2549c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2550c66ac9dbSNicholas Bellinger char *page) 2551c66ac9dbSNicholas Bellinger { 25526708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) 2553c66ac9dbSNicholas Bellinger return 0; 2554c66ac9dbSNicholas Bellinger 2555c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 2556c66ac9dbSNicholas Bellinger } 2557c66ac9dbSNicholas Bellinger 2558c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( 2559c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2560c66ac9dbSNicholas Bellinger const char *page, 2561c66ac9dbSNicholas Bellinger size_t count) 2562c66ac9dbSNicholas Bellinger { 2563c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2564c66ac9dbSNicholas Bellinger unsigned long tg_pt_gp_id; 2565c66ac9dbSNicholas Bellinger int ret; 2566c66ac9dbSNicholas Bellinger 256757103d7fSJingoo Han ret = kstrtoul(page, 0, &tg_pt_gp_id); 2568c66ac9dbSNicholas Bellinger if (ret < 0) { 256957103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2570c66ac9dbSNicholas Bellinger " tg_pt_gp_id\n", ret); 257157103d7fSJingoo Han return ret; 2572c66ac9dbSNicholas Bellinger } 2573c66ac9dbSNicholas Bellinger if (tg_pt_gp_id > 0x0000ffff) { 25746708bb27SAndy Grover pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" 2575c66ac9dbSNicholas Bellinger " 0x0000ffff\n", tg_pt_gp_id); 2576c66ac9dbSNicholas Bellinger return -EINVAL; 2577c66ac9dbSNicholas Bellinger } 2578c66ac9dbSNicholas Bellinger 2579c66ac9dbSNicholas Bellinger ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 2580c66ac9dbSNicholas Bellinger if (ret < 0) 2581c66ac9dbSNicholas Bellinger return -EINVAL; 2582c66ac9dbSNicholas Bellinger 25836708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 2584c66ac9dbSNicholas Bellinger "core/alua/tg_pt_gps/%s to ID: %hu\n", 2585c66ac9dbSNicholas Bellinger config_item_name(&alua_tg_pt_gp_cg->cg_item), 2586c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_id); 2587c66ac9dbSNicholas Bellinger 2588c66ac9dbSNicholas Bellinger return count; 2589c66ac9dbSNicholas Bellinger } 2590c66ac9dbSNicholas Bellinger 2591c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); 2592c66ac9dbSNicholas Bellinger 2593c66ac9dbSNicholas Bellinger /* 2594c66ac9dbSNicholas Bellinger * members 2595c66ac9dbSNicholas Bellinger */ 2596c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_members( 2597c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2598c66ac9dbSNicholas Bellinger char *page) 2599c66ac9dbSNicholas Bellinger { 2600c66ac9dbSNicholas Bellinger struct se_port *port; 2601c66ac9dbSNicholas Bellinger struct se_portal_group *tpg; 2602c66ac9dbSNicholas Bellinger struct se_lun *lun; 2603c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 2604c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2605c66ac9dbSNicholas Bellinger unsigned char buf[TG_PT_GROUP_NAME_BUF]; 2606c66ac9dbSNicholas Bellinger 2607c66ac9dbSNicholas Bellinger memset(buf, 0, TG_PT_GROUP_NAME_BUF); 2608c66ac9dbSNicholas Bellinger 2609c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp->tg_pt_gp_lock); 2610c66ac9dbSNicholas Bellinger list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, 2611c66ac9dbSNicholas Bellinger tg_pt_gp_mem_list) { 2612c66ac9dbSNicholas Bellinger port = tg_pt_gp_mem->tg_pt; 2613c66ac9dbSNicholas Bellinger tpg = port->sep_tpg; 2614c66ac9dbSNicholas Bellinger lun = port->sep_lun; 2615c66ac9dbSNicholas Bellinger 2616c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 2617e3d6f909SAndy Grover "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), 2618e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), 2619e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 2620c66ac9dbSNicholas Bellinger config_item_name(&lun->lun_group.cg_item)); 2621c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2622c66ac9dbSNicholas Bellinger 2623c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 26246708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2625c66ac9dbSNicholas Bellinger "_members buffer\n"); 2626c66ac9dbSNicholas Bellinger break; 2627c66ac9dbSNicholas Bellinger } 2628c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2629c66ac9dbSNicholas Bellinger len += cur_len; 2630c66ac9dbSNicholas Bellinger } 2631c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 2632c66ac9dbSNicholas Bellinger 2633c66ac9dbSNicholas Bellinger return len; 2634c66ac9dbSNicholas Bellinger } 2635c66ac9dbSNicholas Bellinger 2636c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR_RO(members); 2637c66ac9dbSNicholas Bellinger 2638c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, 2639c66ac9dbSNicholas Bellinger tg_pt_gp_group); 2640c66ac9dbSNicholas Bellinger 2641c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 2642c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_state.attr, 2643c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_status.attr, 2644c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_type.attr, 2645b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_transitioning.attr, 2646b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_offline.attr, 2647b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr, 2648b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_unavailable.attr, 2649b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_standby.attr, 2650b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr, 2651b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr, 2652c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_write_metadata.attr, 2653c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, 2654c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, 2655125d0119SHannes Reinecke &target_core_alua_tg_pt_gp_implicit_trans_secs.attr, 2656c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_preferred.attr, 2657c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, 2658c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_members.attr, 2659c66ac9dbSNicholas Bellinger NULL, 2660c66ac9dbSNicholas Bellinger }; 2661c66ac9dbSNicholas Bellinger 26621f6fe7cbSNicholas Bellinger static void target_core_alua_tg_pt_gp_release(struct config_item *item) 26631f6fe7cbSNicholas Bellinger { 26641f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 26651f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 26661f6fe7cbSNicholas Bellinger 26671f6fe7cbSNicholas Bellinger core_alua_free_tg_pt_gp(tg_pt_gp); 26681f6fe7cbSNicholas Bellinger } 26691f6fe7cbSNicholas Bellinger 2670c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 26711f6fe7cbSNicholas Bellinger .release = target_core_alua_tg_pt_gp_release, 2672c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_tg_pt_gp_attr_show, 2673c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_tg_pt_gp_attr_store, 2674c66ac9dbSNicholas Bellinger }; 2675c66ac9dbSNicholas Bellinger 2676c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_tg_pt_gp_cit = { 2677c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 2678c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_tg_pt_gp_attrs, 2679c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2680c66ac9dbSNicholas Bellinger }; 2681c66ac9dbSNicholas Bellinger 2682c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2683c66ac9dbSNicholas Bellinger 2684c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2685c66ac9dbSNicholas Bellinger 2686c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_tg_pt_gp( 2687c66ac9dbSNicholas Bellinger struct config_group *group, 2688c66ac9dbSNicholas Bellinger const char *name) 2689c66ac9dbSNicholas Bellinger { 2690c66ac9dbSNicholas Bellinger struct t10_alua *alua = container_of(group, struct t10_alua, 2691c66ac9dbSNicholas Bellinger alua_tg_pt_gps_group); 2692c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2693c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = NULL; 2694c66ac9dbSNicholas Bellinger struct config_item *alua_tg_pt_gp_ci = NULL; 2695c66ac9dbSNicholas Bellinger 26960fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); 26976708bb27SAndy Grover if (!tg_pt_gp) 2698c66ac9dbSNicholas Bellinger return NULL; 2699c66ac9dbSNicholas Bellinger 2700c66ac9dbSNicholas Bellinger alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2701c66ac9dbSNicholas Bellinger alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 2702c66ac9dbSNicholas Bellinger 2703c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_tg_pt_gp_cg, name, 2704c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_cit); 2705c66ac9dbSNicholas Bellinger 27066708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 2707c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s\n", 2708c66ac9dbSNicholas Bellinger config_item_name(alua_tg_pt_gp_ci)); 2709c66ac9dbSNicholas Bellinger 2710c66ac9dbSNicholas Bellinger return alua_tg_pt_gp_cg; 2711c66ac9dbSNicholas Bellinger } 2712c66ac9dbSNicholas Bellinger 2713c66ac9dbSNicholas Bellinger static void target_core_alua_drop_tg_pt_gp( 2714c66ac9dbSNicholas Bellinger struct config_group *group, 2715c66ac9dbSNicholas Bellinger struct config_item *item) 2716c66ac9dbSNicholas Bellinger { 2717c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2718c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2719c66ac9dbSNicholas Bellinger 27206708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 2721c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s, ID: %hu\n", 2722c66ac9dbSNicholas Bellinger config_item_name(item), tg_pt_gp->tg_pt_gp_id); 27231f6fe7cbSNicholas Bellinger /* 27241f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 27251f6fe7cbSNicholas Bellinger * -> target_core_alua_tg_pt_gp_release(). 27261f6fe7cbSNicholas Bellinger */ 2727c66ac9dbSNicholas Bellinger config_item_put(item); 2728c66ac9dbSNicholas Bellinger } 2729c66ac9dbSNicholas Bellinger 2730c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 2731c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_tg_pt_gp, 2732c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_tg_pt_gp, 2733c66ac9dbSNicholas Bellinger }; 2734c66ac9dbSNicholas Bellinger 2735c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_tg_pt_gps_cit = { 2736c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, 2737c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2738c66ac9dbSNicholas Bellinger }; 2739c66ac9dbSNicholas Bellinger 2740c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2741c66ac9dbSNicholas Bellinger 2742c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_cit */ 2743c66ac9dbSNicholas Bellinger 2744c66ac9dbSNicholas Bellinger /* 2745c66ac9dbSNicholas Bellinger * target_core_alua_cit is a ConfigFS group that lives under 2746c66ac9dbSNicholas Bellinger * /sys/kernel/config/target/core/alua. There are default groups 2747c66ac9dbSNicholas Bellinger * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 2748c66ac9dbSNicholas Bellinger * target_core_alua_cit in target_core_init_configfs() below. 2749c66ac9dbSNicholas Bellinger */ 2750c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_cit = { 2751c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2752c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 2753c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2754c66ac9dbSNicholas Bellinger }; 2755c66ac9dbSNicholas Bellinger 2756c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_cit */ 2757c66ac9dbSNicholas Bellinger 275812d23384SNicholas Bellinger /* Start functions for struct config_item_type target_core_stat_cit */ 275912d23384SNicholas Bellinger 276012d23384SNicholas Bellinger static struct config_group *target_core_stat_mkdir( 276112d23384SNicholas Bellinger struct config_group *group, 276212d23384SNicholas Bellinger const char *name) 276312d23384SNicholas Bellinger { 276412d23384SNicholas Bellinger return ERR_PTR(-ENOSYS); 276512d23384SNicholas Bellinger } 276612d23384SNicholas Bellinger 276712d23384SNicholas Bellinger static void target_core_stat_rmdir( 276812d23384SNicholas Bellinger struct config_group *group, 276912d23384SNicholas Bellinger struct config_item *item) 277012d23384SNicholas Bellinger { 277112d23384SNicholas Bellinger return; 277212d23384SNicholas Bellinger } 277312d23384SNicholas Bellinger 277412d23384SNicholas Bellinger static struct configfs_group_operations target_core_stat_group_ops = { 277512d23384SNicholas Bellinger .make_group = &target_core_stat_mkdir, 277612d23384SNicholas Bellinger .drop_item = &target_core_stat_rmdir, 277712d23384SNicholas Bellinger }; 277812d23384SNicholas Bellinger 277912d23384SNicholas Bellinger static struct config_item_type target_core_stat_cit = { 278012d23384SNicholas Bellinger .ct_group_ops = &target_core_stat_group_ops, 278112d23384SNicholas Bellinger .ct_owner = THIS_MODULE, 278212d23384SNicholas Bellinger }; 278312d23384SNicholas Bellinger 278412d23384SNicholas Bellinger /* End functions for struct config_item_type target_core_stat_cit */ 278512d23384SNicholas Bellinger 2786c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_hba_cit */ 2787c66ac9dbSNicholas Bellinger 2788c66ac9dbSNicholas Bellinger static struct config_group *target_core_make_subdev( 2789c66ac9dbSNicholas Bellinger struct config_group *group, 2790c66ac9dbSNicholas Bellinger const char *name) 2791c66ac9dbSNicholas Bellinger { 2792c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2793c66ac9dbSNicholas Bellinger struct se_subsystem_api *t; 2794c66ac9dbSNicholas Bellinger struct config_item *hba_ci = &group->cg_item; 2795c66ac9dbSNicholas Bellinger struct se_hba *hba = item_to_hba(hba_ci); 27960fd97ccfSChristoph Hellwig struct se_device *dev; 2797c66ac9dbSNicholas Bellinger struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; 279812d23384SNicholas Bellinger struct config_group *dev_stat_grp = NULL; 279912d23384SNicholas Bellinger int errno = -ENOMEM, ret; 2800c66ac9dbSNicholas Bellinger 280112d23384SNicholas Bellinger ret = mutex_lock_interruptible(&hba->hba_access_mutex); 280212d23384SNicholas Bellinger if (ret) 280312d23384SNicholas Bellinger return ERR_PTR(ret); 2804c66ac9dbSNicholas Bellinger /* 2805c66ac9dbSNicholas Bellinger * Locate the struct se_subsystem_api from parent's struct se_hba. 2806c66ac9dbSNicholas Bellinger */ 2807c66ac9dbSNicholas Bellinger t = hba->transport; 2808c66ac9dbSNicholas Bellinger 28090fd97ccfSChristoph Hellwig dev = target_alloc_device(hba, name); 28100fd97ccfSChristoph Hellwig if (!dev) 28110fd97ccfSChristoph Hellwig goto out_unlock; 2812c66ac9dbSNicholas Bellinger 28130fd97ccfSChristoph Hellwig dev_cg = &dev->dev_group; 2814c66ac9dbSNicholas Bellinger 281513f6a914SSebastian Andrzej Siewior dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, 2816c66ac9dbSNicholas Bellinger GFP_KERNEL); 28176708bb27SAndy Grover if (!dev_cg->default_groups) 28180fd97ccfSChristoph Hellwig goto out_free_device; 2819c66ac9dbSNicholas Bellinger 282073112edcSNicholas Bellinger config_group_init_type_name(dev_cg, name, &t->tb_cits.tb_dev_cit); 28210fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", 2822f79a897eSNicholas Bellinger &t->tb_cits.tb_dev_attrib_cit); 28230fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_pr_group, "pr", 282491e2e39bSNicholas Bellinger &t->tb_cits.tb_dev_pr_cit); 28250fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", 2826c66ac9dbSNicholas Bellinger &target_core_dev_wwn_cit); 28270fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, 2828c66ac9dbSNicholas Bellinger "alua", &target_core_alua_tg_pt_gps_cit); 28290fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_stat_grps.stat_group, 283012d23384SNicholas Bellinger "statistics", &target_core_stat_cit); 283112d23384SNicholas Bellinger 28320fd97ccfSChristoph Hellwig dev_cg->default_groups[0] = &dev->dev_attrib.da_group; 28330fd97ccfSChristoph Hellwig dev_cg->default_groups[1] = &dev->dev_pr_group; 28340fd97ccfSChristoph Hellwig dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; 28350fd97ccfSChristoph Hellwig dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; 28360fd97ccfSChristoph Hellwig dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; 283712d23384SNicholas Bellinger dev_cg->default_groups[5] = NULL; 2838c66ac9dbSNicholas Bellinger /* 283912d23384SNicholas Bellinger * Add core/$HBA/$DEV/alua/default_tg_pt_gp 2840c66ac9dbSNicholas Bellinger */ 28410fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); 28426708bb27SAndy Grover if (!tg_pt_gp) 28430fd97ccfSChristoph Hellwig goto out_free_dev_cg_default_groups; 28440fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 2845c66ac9dbSNicholas Bellinger 28460fd97ccfSChristoph Hellwig tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 284713f6a914SSebastian Andrzej Siewior tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2848c66ac9dbSNicholas Bellinger GFP_KERNEL); 28496708bb27SAndy Grover if (!tg_pt_gp_cg->default_groups) { 28506708bb27SAndy Grover pr_err("Unable to allocate tg_pt_gp_cg->" 2851c66ac9dbSNicholas Bellinger "default_groups\n"); 28520fd97ccfSChristoph Hellwig goto out_free_tg_pt_gp; 2853c66ac9dbSNicholas Bellinger } 2854c66ac9dbSNicholas Bellinger 2855c66ac9dbSNicholas Bellinger config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 2856c66ac9dbSNicholas Bellinger "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 2857c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; 2858c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[1] = NULL; 285912d23384SNicholas Bellinger /* 286012d23384SNicholas Bellinger * Add core/$HBA/$DEV/statistics/ default groups 286112d23384SNicholas Bellinger */ 28620fd97ccfSChristoph Hellwig dev_stat_grp = &dev->dev_stat_grps.stat_group; 286313f6a914SSebastian Andrzej Siewior dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, 286412d23384SNicholas Bellinger GFP_KERNEL); 286512d23384SNicholas Bellinger if (!dev_stat_grp->default_groups) { 28666708bb27SAndy Grover pr_err("Unable to allocate dev_stat_grp->default_groups\n"); 28670fd97ccfSChristoph Hellwig goto out_free_tg_pt_gp_cg_default_groups; 286812d23384SNicholas Bellinger } 28690fd97ccfSChristoph Hellwig target_stat_setup_dev_default_groups(dev); 2870c66ac9dbSNicholas Bellinger 2871c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 28720fd97ccfSChristoph Hellwig return dev_cg; 28730fd97ccfSChristoph Hellwig 28740fd97ccfSChristoph Hellwig out_free_tg_pt_gp_cg_default_groups: 2875c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 28760fd97ccfSChristoph Hellwig out_free_tg_pt_gp: 28770fd97ccfSChristoph Hellwig core_alua_free_tg_pt_gp(tg_pt_gp); 28780fd97ccfSChristoph Hellwig out_free_dev_cg_default_groups: 2879c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 28800fd97ccfSChristoph Hellwig out_free_device: 28810fd97ccfSChristoph Hellwig target_free_device(dev); 28820fd97ccfSChristoph Hellwig out_unlock: 2883c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 288412d23384SNicholas Bellinger return ERR_PTR(errno); 2885c66ac9dbSNicholas Bellinger } 2886c66ac9dbSNicholas Bellinger 2887c66ac9dbSNicholas Bellinger static void target_core_drop_subdev( 2888c66ac9dbSNicholas Bellinger struct config_group *group, 2889c66ac9dbSNicholas Bellinger struct config_item *item) 2890c66ac9dbSNicholas Bellinger { 28910fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 28920fd97ccfSChristoph Hellwig struct se_device *dev = 28930fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 2894c66ac9dbSNicholas Bellinger struct se_hba *hba; 2895c66ac9dbSNicholas Bellinger struct config_item *df_item; 28960fd97ccfSChristoph Hellwig struct config_group *tg_pt_gp_cg, *dev_stat_grp; 28971f6fe7cbSNicholas Bellinger int i; 2898c66ac9dbSNicholas Bellinger 28990fd97ccfSChristoph Hellwig hba = item_to_hba(&dev->se_hba->hba_group.cg_item); 2900c66ac9dbSNicholas Bellinger 29011f6fe7cbSNicholas Bellinger mutex_lock(&hba->hba_access_mutex); 2902c66ac9dbSNicholas Bellinger 29030fd97ccfSChristoph Hellwig dev_stat_grp = &dev->dev_stat_grps.stat_group; 290412d23384SNicholas Bellinger for (i = 0; dev_stat_grp->default_groups[i]; i++) { 290512d23384SNicholas Bellinger df_item = &dev_stat_grp->default_groups[i]->cg_item; 290612d23384SNicholas Bellinger dev_stat_grp->default_groups[i] = NULL; 290712d23384SNicholas Bellinger config_item_put(df_item); 290812d23384SNicholas Bellinger } 290912d23384SNicholas Bellinger kfree(dev_stat_grp->default_groups); 291012d23384SNicholas Bellinger 29110fd97ccfSChristoph Hellwig tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 2912c66ac9dbSNicholas Bellinger for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { 2913c66ac9dbSNicholas Bellinger df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; 2914c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[i] = NULL; 2915c66ac9dbSNicholas Bellinger config_item_put(df_item); 2916c66ac9dbSNicholas Bellinger } 2917c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 29181f6fe7cbSNicholas Bellinger /* 29191f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 29201f6fe7cbSNicholas Bellinger * directly from target_core_alua_tg_pt_gp_release(). 29211f6fe7cbSNicholas Bellinger */ 29220fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = NULL; 2923c66ac9dbSNicholas Bellinger 2924c66ac9dbSNicholas Bellinger for (i = 0; dev_cg->default_groups[i]; i++) { 2925c66ac9dbSNicholas Bellinger df_item = &dev_cg->default_groups[i]->cg_item; 2926c66ac9dbSNicholas Bellinger dev_cg->default_groups[i] = NULL; 2927c66ac9dbSNicholas Bellinger config_item_put(df_item); 2928c66ac9dbSNicholas Bellinger } 29291f6fe7cbSNicholas Bellinger /* 29300fd97ccfSChristoph Hellwig * se_dev is released from target_core_dev_item_ops->release() 29311f6fe7cbSNicholas Bellinger */ 2932c66ac9dbSNicholas Bellinger config_item_put(item); 2933c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 2934c66ac9dbSNicholas Bellinger } 2935c66ac9dbSNicholas Bellinger 2936c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_hba_group_ops = { 2937c66ac9dbSNicholas Bellinger .make_group = target_core_make_subdev, 2938c66ac9dbSNicholas Bellinger .drop_item = target_core_drop_subdev, 2939c66ac9dbSNicholas Bellinger }; 2940c66ac9dbSNicholas Bellinger 2941c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); 2942c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR(_name, _mode) \ 2943c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2944c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2945c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2946c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name, \ 2947c66ac9dbSNicholas Bellinger target_core_hba_store_attr_##_name); 2948c66ac9dbSNicholas Bellinger 2949c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR_RO(_name) \ 2950c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2951c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2952c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2953c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name); 2954c66ac9dbSNicholas Bellinger 2955c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_info( 2956c66ac9dbSNicholas Bellinger struct se_hba *hba, 2957c66ac9dbSNicholas Bellinger char *page) 2958c66ac9dbSNicholas Bellinger { 2959c66ac9dbSNicholas Bellinger return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 2960c66ac9dbSNicholas Bellinger hba->hba_id, hba->transport->name, 2961c66ac9dbSNicholas Bellinger TARGET_CORE_CONFIGFS_VERSION); 2962c66ac9dbSNicholas Bellinger } 2963c66ac9dbSNicholas Bellinger 2964c66ac9dbSNicholas Bellinger SE_HBA_ATTR_RO(hba_info); 2965c66ac9dbSNicholas Bellinger 2966c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, 2967c66ac9dbSNicholas Bellinger char *page) 2968c66ac9dbSNicholas Bellinger { 2969c66ac9dbSNicholas Bellinger int hba_mode = 0; 2970c66ac9dbSNicholas Bellinger 2971c66ac9dbSNicholas Bellinger if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 2972c66ac9dbSNicholas Bellinger hba_mode = 1; 2973c66ac9dbSNicholas Bellinger 2974c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", hba_mode); 2975c66ac9dbSNicholas Bellinger } 2976c66ac9dbSNicholas Bellinger 2977c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, 2978c66ac9dbSNicholas Bellinger const char *page, size_t count) 2979c66ac9dbSNicholas Bellinger { 2980c66ac9dbSNicholas Bellinger struct se_subsystem_api *transport = hba->transport; 2981c66ac9dbSNicholas Bellinger unsigned long mode_flag; 2982c66ac9dbSNicholas Bellinger int ret; 2983c66ac9dbSNicholas Bellinger 2984c66ac9dbSNicholas Bellinger if (transport->pmode_enable_hba == NULL) 2985c66ac9dbSNicholas Bellinger return -EINVAL; 2986c66ac9dbSNicholas Bellinger 298757103d7fSJingoo Han ret = kstrtoul(page, 0, &mode_flag); 2988c66ac9dbSNicholas Bellinger if (ret < 0) { 29896708bb27SAndy Grover pr_err("Unable to extract hba mode flag: %d\n", ret); 299057103d7fSJingoo Han return ret; 2991c66ac9dbSNicholas Bellinger } 2992c66ac9dbSNicholas Bellinger 29930fd97ccfSChristoph Hellwig if (hba->dev_count) { 29946708bb27SAndy Grover pr_err("Unable to set hba_mode with active devices\n"); 2995c66ac9dbSNicholas Bellinger return -EINVAL; 2996c66ac9dbSNicholas Bellinger } 2997c66ac9dbSNicholas Bellinger 2998c66ac9dbSNicholas Bellinger ret = transport->pmode_enable_hba(hba, mode_flag); 2999c66ac9dbSNicholas Bellinger if (ret < 0) 3000c66ac9dbSNicholas Bellinger return -EINVAL; 3001c66ac9dbSNicholas Bellinger if (ret > 0) 3002c66ac9dbSNicholas Bellinger hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 3003c66ac9dbSNicholas Bellinger else if (ret == 0) 3004c66ac9dbSNicholas Bellinger hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 3005c66ac9dbSNicholas Bellinger 3006c66ac9dbSNicholas Bellinger return count; 3007c66ac9dbSNicholas Bellinger } 3008c66ac9dbSNicholas Bellinger 3009c66ac9dbSNicholas Bellinger SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); 3010c66ac9dbSNicholas Bellinger 3011c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); 3012c66ac9dbSNicholas Bellinger 30131f6fe7cbSNicholas Bellinger static void target_core_hba_release(struct config_item *item) 30141f6fe7cbSNicholas Bellinger { 30151f6fe7cbSNicholas Bellinger struct se_hba *hba = container_of(to_config_group(item), 30161f6fe7cbSNicholas Bellinger struct se_hba, hba_group); 30171f6fe7cbSNicholas Bellinger core_delete_hba(hba); 30181f6fe7cbSNicholas Bellinger } 30191f6fe7cbSNicholas Bellinger 3020c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_hba_attrs[] = { 3021c66ac9dbSNicholas Bellinger &target_core_hba_hba_info.attr, 3022c66ac9dbSNicholas Bellinger &target_core_hba_hba_mode.attr, 3023c66ac9dbSNicholas Bellinger NULL, 3024c66ac9dbSNicholas Bellinger }; 3025c66ac9dbSNicholas Bellinger 3026c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_hba_item_ops = { 30271f6fe7cbSNicholas Bellinger .release = target_core_hba_release, 3028c66ac9dbSNicholas Bellinger .show_attribute = target_core_hba_attr_show, 3029c66ac9dbSNicholas Bellinger .store_attribute = target_core_hba_attr_store, 3030c66ac9dbSNicholas Bellinger }; 3031c66ac9dbSNicholas Bellinger 3032c66ac9dbSNicholas Bellinger static struct config_item_type target_core_hba_cit = { 3033c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_hba_item_ops, 3034c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_hba_group_ops, 3035c66ac9dbSNicholas Bellinger .ct_attrs = target_core_hba_attrs, 3036c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3037c66ac9dbSNicholas Bellinger }; 3038c66ac9dbSNicholas Bellinger 3039c66ac9dbSNicholas Bellinger static struct config_group *target_core_call_addhbatotarget( 3040c66ac9dbSNicholas Bellinger struct config_group *group, 3041c66ac9dbSNicholas Bellinger const char *name) 3042c66ac9dbSNicholas Bellinger { 3043c66ac9dbSNicholas Bellinger char *se_plugin_str, *str, *str2; 3044c66ac9dbSNicholas Bellinger struct se_hba *hba; 3045c66ac9dbSNicholas Bellinger char buf[TARGET_CORE_NAME_MAX_LEN]; 3046c66ac9dbSNicholas Bellinger unsigned long plugin_dep_id = 0; 3047c66ac9dbSNicholas Bellinger int ret; 3048c66ac9dbSNicholas Bellinger 3049c66ac9dbSNicholas Bellinger memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); 305060d645a4SDan Carpenter if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 30516708bb27SAndy Grover pr_err("Passed *name strlen(): %d exceeds" 3052c66ac9dbSNicholas Bellinger " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 3053c66ac9dbSNicholas Bellinger TARGET_CORE_NAME_MAX_LEN); 3054c66ac9dbSNicholas Bellinger return ERR_PTR(-ENAMETOOLONG); 3055c66ac9dbSNicholas Bellinger } 3056c66ac9dbSNicholas Bellinger snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 3057c66ac9dbSNicholas Bellinger 3058c66ac9dbSNicholas Bellinger str = strstr(buf, "_"); 30596708bb27SAndy Grover if (!str) { 30606708bb27SAndy Grover pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 3061c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 3062c66ac9dbSNicholas Bellinger } 3063c66ac9dbSNicholas Bellinger se_plugin_str = buf; 3064c66ac9dbSNicholas Bellinger /* 3065c66ac9dbSNicholas Bellinger * Special case for subsystem plugins that have "_" in their names. 3066c66ac9dbSNicholas Bellinger * Namely rd_direct and rd_mcp.. 3067c66ac9dbSNicholas Bellinger */ 3068c66ac9dbSNicholas Bellinger str2 = strstr(str+1, "_"); 30696708bb27SAndy Grover if (str2) { 3070c66ac9dbSNicholas Bellinger *str2 = '\0'; /* Terminate for *se_plugin_str */ 3071c66ac9dbSNicholas Bellinger str2++; /* Skip to start of plugin dependent ID */ 3072c66ac9dbSNicholas Bellinger str = str2; 3073c66ac9dbSNicholas Bellinger } else { 3074c66ac9dbSNicholas Bellinger *str = '\0'; /* Terminate for *se_plugin_str */ 3075c66ac9dbSNicholas Bellinger str++; /* Skip to start of plugin dependent ID */ 3076c66ac9dbSNicholas Bellinger } 3077c66ac9dbSNicholas Bellinger 307857103d7fSJingoo Han ret = kstrtoul(str, 0, &plugin_dep_id); 3079c66ac9dbSNicholas Bellinger if (ret < 0) { 308057103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 3081c66ac9dbSNicholas Bellinger " plugin_dep_id\n", ret); 308257103d7fSJingoo Han return ERR_PTR(ret); 3083c66ac9dbSNicholas Bellinger } 3084c66ac9dbSNicholas Bellinger /* 3085c66ac9dbSNicholas Bellinger * Load up TCM subsystem plugins if they have not already been loaded. 3086c66ac9dbSNicholas Bellinger */ 3087dbc5623eSNicholas Bellinger transport_subsystem_check_init(); 3088c66ac9dbSNicholas Bellinger 3089c66ac9dbSNicholas Bellinger hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 3090c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 3091c66ac9dbSNicholas Bellinger return ERR_CAST(hba); 3092c66ac9dbSNicholas Bellinger 3093c66ac9dbSNicholas Bellinger config_group_init_type_name(&hba->hba_group, name, 3094c66ac9dbSNicholas Bellinger &target_core_hba_cit); 3095c66ac9dbSNicholas Bellinger 3096c66ac9dbSNicholas Bellinger return &hba->hba_group; 3097c66ac9dbSNicholas Bellinger } 3098c66ac9dbSNicholas Bellinger 3099c66ac9dbSNicholas Bellinger static void target_core_call_delhbafromtarget( 3100c66ac9dbSNicholas Bellinger struct config_group *group, 3101c66ac9dbSNicholas Bellinger struct config_item *item) 3102c66ac9dbSNicholas Bellinger { 31031f6fe7cbSNicholas Bellinger /* 31041f6fe7cbSNicholas Bellinger * core_delete_hba() is called from target_core_hba_item_ops->release() 31051f6fe7cbSNicholas Bellinger * -> target_core_hba_release() 31061f6fe7cbSNicholas Bellinger */ 3107c66ac9dbSNicholas Bellinger config_item_put(item); 3108c66ac9dbSNicholas Bellinger } 3109c66ac9dbSNicholas Bellinger 3110c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_group_ops = { 3111c66ac9dbSNicholas Bellinger .make_group = target_core_call_addhbatotarget, 3112c66ac9dbSNicholas Bellinger .drop_item = target_core_call_delhbafromtarget, 3113c66ac9dbSNicholas Bellinger }; 3114c66ac9dbSNicholas Bellinger 3115c66ac9dbSNicholas Bellinger static struct config_item_type target_core_cit = { 3116c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3117c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_group_ops, 3118c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3119c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3120c66ac9dbSNicholas Bellinger }; 3121c66ac9dbSNicholas Bellinger 3122c66ac9dbSNicholas Bellinger /* Stop functions for struct config_item_type target_core_hba_cit */ 3123c66ac9dbSNicholas Bellinger 312473112edcSNicholas Bellinger void target_core_setup_sub_cits(struct se_subsystem_api *sa) 312573112edcSNicholas Bellinger { 312673112edcSNicholas Bellinger target_core_setup_dev_cit(sa); 3127f79a897eSNicholas Bellinger target_core_setup_dev_attrib_cit(sa); 312891e2e39bSNicholas Bellinger target_core_setup_dev_pr_cit(sa); 312973112edcSNicholas Bellinger } 313073112edcSNicholas Bellinger EXPORT_SYMBOL(target_core_setup_sub_cits); 313173112edcSNicholas Bellinger 313254550fabSAxel Lin static int __init target_core_init_configfs(void) 3133c66ac9dbSNicholas Bellinger { 3134c66ac9dbSNicholas Bellinger struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; 3135c66ac9dbSNicholas Bellinger struct config_group *lu_gp_cg = NULL; 3136c66ac9dbSNicholas Bellinger struct configfs_subsystem *subsys; 3137c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 3138c66ac9dbSNicholas Bellinger int ret; 3139c66ac9dbSNicholas Bellinger 31406708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 3141c66ac9dbSNicholas Bellinger " Engine: %s on %s/%s on "UTS_RELEASE"\n", 3142c66ac9dbSNicholas Bellinger TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 3143c66ac9dbSNicholas Bellinger 3144c66ac9dbSNicholas Bellinger subsys = target_core_subsystem[0]; 3145c66ac9dbSNicholas Bellinger config_group_init(&subsys->su_group); 3146c66ac9dbSNicholas Bellinger mutex_init(&subsys->su_mutex); 3147c66ac9dbSNicholas Bellinger 3148e3d6f909SAndy Grover ret = init_se_kmem_caches(); 3149c66ac9dbSNicholas Bellinger if (ret < 0) 3150e3d6f909SAndy Grover return ret; 3151c66ac9dbSNicholas Bellinger /* 3152c66ac9dbSNicholas Bellinger * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 3153c66ac9dbSNicholas Bellinger * and ALUA Logical Unit Group and Target Port Group infrastructure. 3154c66ac9dbSNicholas Bellinger */ 3155c66ac9dbSNicholas Bellinger target_cg = &subsys->su_group; 3156ab6dae82SAndy Grover target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3157c66ac9dbSNicholas Bellinger GFP_KERNEL); 31586708bb27SAndy Grover if (!target_cg->default_groups) { 31596708bb27SAndy Grover pr_err("Unable to allocate target_cg->default_groups\n"); 316037bb7899SPeter Senna Tschudin ret = -ENOMEM; 3161c66ac9dbSNicholas Bellinger goto out_global; 3162c66ac9dbSNicholas Bellinger } 3163c66ac9dbSNicholas Bellinger 3164e3d6f909SAndy Grover config_group_init_type_name(&target_core_hbagroup, 3165c66ac9dbSNicholas Bellinger "core", &target_core_cit); 3166e3d6f909SAndy Grover target_cg->default_groups[0] = &target_core_hbagroup; 3167c66ac9dbSNicholas Bellinger target_cg->default_groups[1] = NULL; 3168c66ac9dbSNicholas Bellinger /* 3169c66ac9dbSNicholas Bellinger * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 3170c66ac9dbSNicholas Bellinger */ 3171e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 317213f6a914SSebastian Andrzej Siewior hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3173c66ac9dbSNicholas Bellinger GFP_KERNEL); 31746708bb27SAndy Grover if (!hba_cg->default_groups) { 31756708bb27SAndy Grover pr_err("Unable to allocate hba_cg->default_groups\n"); 317637bb7899SPeter Senna Tschudin ret = -ENOMEM; 3177c66ac9dbSNicholas Bellinger goto out_global; 3178c66ac9dbSNicholas Bellinger } 3179e3d6f909SAndy Grover config_group_init_type_name(&alua_group, 3180c66ac9dbSNicholas Bellinger "alua", &target_core_alua_cit); 3181e3d6f909SAndy Grover hba_cg->default_groups[0] = &alua_group; 3182c66ac9dbSNicholas Bellinger hba_cg->default_groups[1] = NULL; 3183c66ac9dbSNicholas Bellinger /* 3184c66ac9dbSNicholas Bellinger * Add ALUA Logical Unit Group and Target Port Group ConfigFS 3185c66ac9dbSNicholas Bellinger * groups under /sys/kernel/config/target/core/alua/ 3186c66ac9dbSNicholas Bellinger */ 3187e3d6f909SAndy Grover alua_cg = &alua_group; 318813f6a914SSebastian Andrzej Siewior alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3189c66ac9dbSNicholas Bellinger GFP_KERNEL); 31906708bb27SAndy Grover if (!alua_cg->default_groups) { 31916708bb27SAndy Grover pr_err("Unable to allocate alua_cg->default_groups\n"); 319237bb7899SPeter Senna Tschudin ret = -ENOMEM; 3193c66ac9dbSNicholas Bellinger goto out_global; 3194c66ac9dbSNicholas Bellinger } 3195c66ac9dbSNicholas Bellinger 3196e3d6f909SAndy Grover config_group_init_type_name(&alua_lu_gps_group, 3197c66ac9dbSNicholas Bellinger "lu_gps", &target_core_alua_lu_gps_cit); 3198e3d6f909SAndy Grover alua_cg->default_groups[0] = &alua_lu_gps_group; 3199c66ac9dbSNicholas Bellinger alua_cg->default_groups[1] = NULL; 3200c66ac9dbSNicholas Bellinger /* 3201c66ac9dbSNicholas Bellinger * Add core/alua/lu_gps/default_lu_gp 3202c66ac9dbSNicholas Bellinger */ 3203c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 320437bb7899SPeter Senna Tschudin if (IS_ERR(lu_gp)) { 320537bb7899SPeter Senna Tschudin ret = -ENOMEM; 3206c66ac9dbSNicholas Bellinger goto out_global; 320737bb7899SPeter Senna Tschudin } 3208c66ac9dbSNicholas Bellinger 3209e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 321013f6a914SSebastian Andrzej Siewior lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3211c66ac9dbSNicholas Bellinger GFP_KERNEL); 32126708bb27SAndy Grover if (!lu_gp_cg->default_groups) { 32136708bb27SAndy Grover pr_err("Unable to allocate lu_gp_cg->default_groups\n"); 321437bb7899SPeter Senna Tschudin ret = -ENOMEM; 3215c66ac9dbSNicholas Bellinger goto out_global; 3216c66ac9dbSNicholas Bellinger } 3217c66ac9dbSNicholas Bellinger 3218c66ac9dbSNicholas Bellinger config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 3219c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 3220c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; 3221c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[1] = NULL; 3222e3d6f909SAndy Grover default_lu_gp = lu_gp; 3223c66ac9dbSNicholas Bellinger /* 3224c66ac9dbSNicholas Bellinger * Register the target_core_mod subsystem with configfs. 3225c66ac9dbSNicholas Bellinger */ 3226c66ac9dbSNicholas Bellinger ret = configfs_register_subsystem(subsys); 3227c66ac9dbSNicholas Bellinger if (ret < 0) { 32286708bb27SAndy Grover pr_err("Error %d while registering subsystem %s\n", 3229c66ac9dbSNicholas Bellinger ret, subsys->su_group.cg_item.ci_namebuf); 3230c66ac9dbSNicholas Bellinger goto out_global; 3231c66ac9dbSNicholas Bellinger } 32326708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 3233c66ac9dbSNicholas Bellinger " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" 3234c66ac9dbSNicholas Bellinger " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 3235c66ac9dbSNicholas Bellinger /* 3236c66ac9dbSNicholas Bellinger * Register built-in RAMDISK subsystem logic for virtual LUN 0 3237c66ac9dbSNicholas Bellinger */ 3238c66ac9dbSNicholas Bellinger ret = rd_module_init(); 3239c66ac9dbSNicholas Bellinger if (ret < 0) 3240c66ac9dbSNicholas Bellinger goto out; 3241c66ac9dbSNicholas Bellinger 32420d0f9dfbSRoland Dreier ret = core_dev_setup_virtual_lun0(); 32430d0f9dfbSRoland Dreier if (ret < 0) 3244c66ac9dbSNicholas Bellinger goto out; 3245c66ac9dbSNicholas Bellinger 3246f99715acSNicholas Bellinger ret = target_xcopy_setup_pt(); 3247f99715acSNicholas Bellinger if (ret < 0) 3248f99715acSNicholas Bellinger goto out; 3249f99715acSNicholas Bellinger 3250c66ac9dbSNicholas Bellinger return 0; 3251c66ac9dbSNicholas Bellinger 3252c66ac9dbSNicholas Bellinger out: 3253c66ac9dbSNicholas Bellinger configfs_unregister_subsystem(subsys); 3254c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3255c66ac9dbSNicholas Bellinger rd_module_exit(); 3256c66ac9dbSNicholas Bellinger out_global: 3257e3d6f909SAndy Grover if (default_lu_gp) { 3258e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3259e3d6f909SAndy Grover default_lu_gp = NULL; 3260c66ac9dbSNicholas Bellinger } 3261c66ac9dbSNicholas Bellinger if (lu_gp_cg) 3262c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 3263c66ac9dbSNicholas Bellinger if (alua_cg) 3264c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 3265c66ac9dbSNicholas Bellinger if (hba_cg) 3266c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 3267c66ac9dbSNicholas Bellinger kfree(target_cg->default_groups); 3268e3d6f909SAndy Grover release_se_kmem_caches(); 3269e3d6f909SAndy Grover return ret; 3270c66ac9dbSNicholas Bellinger } 3271c66ac9dbSNicholas Bellinger 327254550fabSAxel Lin static void __exit target_core_exit_configfs(void) 3273c66ac9dbSNicholas Bellinger { 3274c66ac9dbSNicholas Bellinger struct configfs_subsystem *subsys; 3275c66ac9dbSNicholas Bellinger struct config_group *hba_cg, *alua_cg, *lu_gp_cg; 3276c66ac9dbSNicholas Bellinger struct config_item *item; 3277c66ac9dbSNicholas Bellinger int i; 3278c66ac9dbSNicholas Bellinger 3279c66ac9dbSNicholas Bellinger subsys = target_core_subsystem[0]; 3280c66ac9dbSNicholas Bellinger 3281e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 3282c66ac9dbSNicholas Bellinger for (i = 0; lu_gp_cg->default_groups[i]; i++) { 3283c66ac9dbSNicholas Bellinger item = &lu_gp_cg->default_groups[i]->cg_item; 3284c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[i] = NULL; 3285c66ac9dbSNicholas Bellinger config_item_put(item); 3286c66ac9dbSNicholas Bellinger } 3287c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 32887c2bf6e9SNicholas Bellinger lu_gp_cg->default_groups = NULL; 3289c66ac9dbSNicholas Bellinger 3290e3d6f909SAndy Grover alua_cg = &alua_group; 3291c66ac9dbSNicholas Bellinger for (i = 0; alua_cg->default_groups[i]; i++) { 3292c66ac9dbSNicholas Bellinger item = &alua_cg->default_groups[i]->cg_item; 3293c66ac9dbSNicholas Bellinger alua_cg->default_groups[i] = NULL; 3294c66ac9dbSNicholas Bellinger config_item_put(item); 3295c66ac9dbSNicholas Bellinger } 3296c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 32977c2bf6e9SNicholas Bellinger alua_cg->default_groups = NULL; 3298c66ac9dbSNicholas Bellinger 3299e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 3300c66ac9dbSNicholas Bellinger for (i = 0; hba_cg->default_groups[i]; i++) { 3301c66ac9dbSNicholas Bellinger item = &hba_cg->default_groups[i]->cg_item; 3302c66ac9dbSNicholas Bellinger hba_cg->default_groups[i] = NULL; 3303c66ac9dbSNicholas Bellinger config_item_put(item); 3304c66ac9dbSNicholas Bellinger } 3305c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 33067c2bf6e9SNicholas Bellinger hba_cg->default_groups = NULL; 33077c2bf6e9SNicholas Bellinger /* 33087c2bf6e9SNicholas Bellinger * We expect subsys->su_group.default_groups to be released 33097c2bf6e9SNicholas Bellinger * by configfs subsystem provider logic.. 33107c2bf6e9SNicholas Bellinger */ 33117c2bf6e9SNicholas Bellinger configfs_unregister_subsystem(subsys); 3312c66ac9dbSNicholas Bellinger kfree(subsys->su_group.default_groups); 3313c66ac9dbSNicholas Bellinger 3314e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3315e3d6f909SAndy Grover default_lu_gp = NULL; 33167c2bf6e9SNicholas Bellinger 33176708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3318c66ac9dbSNicholas Bellinger " Infrastructure\n"); 3319c66ac9dbSNicholas Bellinger 3320c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3321c66ac9dbSNicholas Bellinger rd_module_exit(); 3322f99715acSNicholas Bellinger target_xcopy_release_pt(); 3323e3d6f909SAndy Grover release_se_kmem_caches(); 3324c66ac9dbSNicholas Bellinger } 3325c66ac9dbSNicholas Bellinger 3326c66ac9dbSNicholas Bellinger MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3327c66ac9dbSNicholas Bellinger MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3328c66ac9dbSNicholas Bellinger MODULE_LICENSE("GPL"); 3329c66ac9dbSNicholas Bellinger 3330c66ac9dbSNicholas Bellinger module_init(target_core_init_configfs); 3331c66ac9dbSNicholas Bellinger module_exit(target_core_exit_configfs); 3332