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 53e3d6f909SAndy Grover extern struct t10_alua_lu_gp *default_lu_gp; 54e3d6f909SAndy Grover 55d0f474e5SRoland Dreier static LIST_HEAD(g_tf_list); 56d0f474e5SRoland Dreier static DEFINE_MUTEX(g_tf_lock); 57c66ac9dbSNicholas Bellinger 58c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute { 59c66ac9dbSNicholas Bellinger struct configfs_attribute attr; 60c66ac9dbSNicholas Bellinger ssize_t (*show)(void *, char *); 61c66ac9dbSNicholas Bellinger ssize_t (*store)(void *, const char *, size_t); 62c66ac9dbSNicholas Bellinger }; 63c66ac9dbSNicholas Bellinger 64e3d6f909SAndy Grover static struct config_group target_core_hbagroup; 65e3d6f909SAndy Grover static struct config_group alua_group; 66e3d6f909SAndy Grover static struct config_group alua_lu_gps_group; 67e3d6f909SAndy Grover 68c66ac9dbSNicholas Bellinger static inline struct se_hba * 69c66ac9dbSNicholas Bellinger item_to_hba(struct config_item *item) 70c66ac9dbSNicholas Bellinger { 71c66ac9dbSNicholas Bellinger return container_of(to_config_group(item), struct se_hba, hba_group); 72c66ac9dbSNicholas Bellinger } 73c66ac9dbSNicholas Bellinger 74c66ac9dbSNicholas Bellinger /* 75c66ac9dbSNicholas Bellinger * Attributes for /sys/kernel/config/target/ 76c66ac9dbSNicholas Bellinger */ 77c66ac9dbSNicholas Bellinger static ssize_t target_core_attr_show(struct config_item *item, 78c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 79c66ac9dbSNicholas Bellinger char *page) 80c66ac9dbSNicholas Bellinger { 81c66ac9dbSNicholas Bellinger return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" 82c66ac9dbSNicholas Bellinger " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, 83c66ac9dbSNicholas Bellinger utsname()->sysname, utsname()->machine); 84c66ac9dbSNicholas Bellinger } 85c66ac9dbSNicholas Bellinger 86c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_fabric_item_ops = { 87c66ac9dbSNicholas Bellinger .show_attribute = target_core_attr_show, 88c66ac9dbSNicholas Bellinger }; 89c66ac9dbSNicholas Bellinger 90c66ac9dbSNicholas Bellinger static struct configfs_attribute target_core_item_attr_version = { 91c66ac9dbSNicholas Bellinger .ca_owner = THIS_MODULE, 92c66ac9dbSNicholas Bellinger .ca_name = "version", 93c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO, 94c66ac9dbSNicholas Bellinger }; 95c66ac9dbSNicholas Bellinger 96c66ac9dbSNicholas Bellinger static struct target_fabric_configfs *target_core_get_fabric( 97c66ac9dbSNicholas Bellinger const char *name) 98c66ac9dbSNicholas Bellinger { 99c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 100c66ac9dbSNicholas Bellinger 1016708bb27SAndy Grover if (!name) 102c66ac9dbSNicholas Bellinger return NULL; 103c66ac9dbSNicholas Bellinger 104c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 105c66ac9dbSNicholas Bellinger list_for_each_entry(tf, &g_tf_list, tf_list) { 1066708bb27SAndy Grover if (!strcmp(tf->tf_name, name)) { 107c66ac9dbSNicholas Bellinger atomic_inc(&tf->tf_access_cnt); 108c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 109c66ac9dbSNicholas Bellinger return tf; 110c66ac9dbSNicholas Bellinger } 111c66ac9dbSNicholas Bellinger } 112c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 113c66ac9dbSNicholas Bellinger 114c66ac9dbSNicholas Bellinger return NULL; 115c66ac9dbSNicholas Bellinger } 116c66ac9dbSNicholas Bellinger 117c66ac9dbSNicholas Bellinger /* 118c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->make_group() 119c66ac9dbSNicholas Bellinger */ 120c66ac9dbSNicholas Bellinger static struct config_group *target_core_register_fabric( 121c66ac9dbSNicholas Bellinger struct config_group *group, 122c66ac9dbSNicholas Bellinger const char *name) 123c66ac9dbSNicholas Bellinger { 124c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 125c66ac9dbSNicholas Bellinger int ret; 126c66ac9dbSNicholas Bellinger 1276708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" 128c66ac9dbSNicholas Bellinger " %s\n", group, name); 129c66ac9dbSNicholas Bellinger /* 130c66ac9dbSNicholas Bellinger * Below are some hardcoded request_module() calls to automatically 131c66ac9dbSNicholas Bellinger * local fabric modules when the following is called: 132c66ac9dbSNicholas Bellinger * 133c66ac9dbSNicholas Bellinger * mkdir -p /sys/kernel/config/target/$MODULE_NAME 134c66ac9dbSNicholas Bellinger * 135c66ac9dbSNicholas Bellinger * Note that this does not limit which TCM fabric module can be 136c66ac9dbSNicholas Bellinger * registered, but simply provids auto loading logic for modules with 137c66ac9dbSNicholas Bellinger * mkdir(2) system calls with known TCM fabric modules. 138c66ac9dbSNicholas Bellinger */ 1396708bb27SAndy Grover if (!strncmp(name, "iscsi", 5)) { 140c66ac9dbSNicholas Bellinger /* 141c66ac9dbSNicholas Bellinger * Automatically load the LIO Target fabric module when the 142c66ac9dbSNicholas Bellinger * following is called: 143c66ac9dbSNicholas Bellinger * 144c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/iscsi 145c66ac9dbSNicholas Bellinger */ 146c66ac9dbSNicholas Bellinger ret = request_module("iscsi_target_mod"); 147c66ac9dbSNicholas Bellinger if (ret < 0) { 1486708bb27SAndy Grover pr_err("request_module() failed for" 149c66ac9dbSNicholas Bellinger " iscsi_target_mod.ko: %d\n", ret); 150c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 151c66ac9dbSNicholas Bellinger } 1526708bb27SAndy Grover } else if (!strncmp(name, "loopback", 8)) { 153c66ac9dbSNicholas Bellinger /* 154c66ac9dbSNicholas Bellinger * Automatically load the tcm_loop fabric module when the 155c66ac9dbSNicholas Bellinger * following is called: 156c66ac9dbSNicholas Bellinger * 157c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/loopback 158c66ac9dbSNicholas Bellinger */ 159c66ac9dbSNicholas Bellinger ret = request_module("tcm_loop"); 160c66ac9dbSNicholas Bellinger if (ret < 0) { 1616708bb27SAndy Grover pr_err("request_module() failed for" 162c66ac9dbSNicholas Bellinger " tcm_loop.ko: %d\n", ret); 163c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 164c66ac9dbSNicholas Bellinger } 165c66ac9dbSNicholas Bellinger } 166c66ac9dbSNicholas Bellinger 167c66ac9dbSNicholas Bellinger tf = target_core_get_fabric(name); 1686708bb27SAndy Grover if (!tf) { 1696708bb27SAndy Grover pr_err("target_core_get_fabric() failed for %s\n", 170c66ac9dbSNicholas Bellinger name); 171c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 172c66ac9dbSNicholas Bellinger } 1736708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" 174c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 175c66ac9dbSNicholas Bellinger /* 176c66ac9dbSNicholas Bellinger * On a successful target_core_get_fabric() look, the returned 177c66ac9dbSNicholas Bellinger * struct target_fabric_configfs *tf will contain a usage reference. 178c66ac9dbSNicholas Bellinger */ 1796708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", 180d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_wwn_cit); 181c66ac9dbSNicholas Bellinger 182c66ac9dbSNicholas Bellinger tf->tf_group.default_groups = tf->tf_default_groups; 183c66ac9dbSNicholas Bellinger tf->tf_group.default_groups[0] = &tf->tf_disc_group; 184c66ac9dbSNicholas Bellinger tf->tf_group.default_groups[1] = NULL; 185c66ac9dbSNicholas Bellinger 186c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_group, name, 187d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_wwn_cit); 188c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 189d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_discovery_cit); 190c66ac9dbSNicholas Bellinger 1916708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" 192c66ac9dbSNicholas Bellinger " %s\n", tf->tf_group.cg_item.ci_name); 193c66ac9dbSNicholas Bellinger /* 194c66ac9dbSNicholas Bellinger * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() 195c66ac9dbSNicholas Bellinger */ 196c66ac9dbSNicholas Bellinger tf->tf_ops.tf_subsys = tf->tf_subsys; 197c66ac9dbSNicholas Bellinger tf->tf_fabric = &tf->tf_group.cg_item; 1986708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" 199c66ac9dbSNicholas Bellinger " for %s\n", name); 200c66ac9dbSNicholas Bellinger 201c66ac9dbSNicholas Bellinger return &tf->tf_group; 202c66ac9dbSNicholas Bellinger } 203c66ac9dbSNicholas Bellinger 204c66ac9dbSNicholas Bellinger /* 205c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->drop_item() 206c66ac9dbSNicholas Bellinger */ 207c66ac9dbSNicholas Bellinger static void target_core_deregister_fabric( 208c66ac9dbSNicholas Bellinger struct config_group *group, 209c66ac9dbSNicholas Bellinger struct config_item *item) 210c66ac9dbSNicholas Bellinger { 211c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf = container_of( 212c66ac9dbSNicholas Bellinger to_config_group(item), struct target_fabric_configfs, tf_group); 213c66ac9dbSNicholas Bellinger struct config_group *tf_group; 214c66ac9dbSNicholas Bellinger struct config_item *df_item; 215c66ac9dbSNicholas Bellinger int i; 216c66ac9dbSNicholas Bellinger 2176708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" 218c66ac9dbSNicholas Bellinger " tf list\n", config_item_name(item)); 219c66ac9dbSNicholas Bellinger 2206708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" 221c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 222c66ac9dbSNicholas Bellinger atomic_dec(&tf->tf_access_cnt); 223c66ac9dbSNicholas Bellinger 2246708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" 225c66ac9dbSNicholas Bellinger " tf->tf_fabric for %s\n", tf->tf_name); 226c66ac9dbSNicholas Bellinger tf->tf_fabric = NULL; 227c66ac9dbSNicholas Bellinger 2286708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" 229c66ac9dbSNicholas Bellinger " %s\n", config_item_name(item)); 230c66ac9dbSNicholas Bellinger 231c66ac9dbSNicholas Bellinger tf_group = &tf->tf_group; 232c66ac9dbSNicholas Bellinger for (i = 0; tf_group->default_groups[i]; i++) { 233c66ac9dbSNicholas Bellinger df_item = &tf_group->default_groups[i]->cg_item; 234c66ac9dbSNicholas Bellinger tf_group->default_groups[i] = NULL; 235c66ac9dbSNicholas Bellinger config_item_put(df_item); 236c66ac9dbSNicholas Bellinger } 237c66ac9dbSNicholas Bellinger config_item_put(item); 238c66ac9dbSNicholas Bellinger } 239c66ac9dbSNicholas Bellinger 240c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_fabric_group_ops = { 241c66ac9dbSNicholas Bellinger .make_group = &target_core_register_fabric, 242c66ac9dbSNicholas Bellinger .drop_item = &target_core_deregister_fabric, 243c66ac9dbSNicholas Bellinger }; 244c66ac9dbSNicholas Bellinger 245c66ac9dbSNicholas Bellinger /* 246c66ac9dbSNicholas Bellinger * All item attributes appearing in /sys/kernel/target/ appear here. 247c66ac9dbSNicholas Bellinger */ 248c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_fabric_item_attrs[] = { 249c66ac9dbSNicholas Bellinger &target_core_item_attr_version, 250c66ac9dbSNicholas Bellinger NULL, 251c66ac9dbSNicholas Bellinger }; 252c66ac9dbSNicholas Bellinger 253c66ac9dbSNicholas Bellinger /* 254c66ac9dbSNicholas Bellinger * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ 255c66ac9dbSNicholas Bellinger */ 256c66ac9dbSNicholas Bellinger static struct config_item_type target_core_fabrics_item = { 257c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_fabric_item_ops, 258c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_fabric_group_ops, 259c66ac9dbSNicholas Bellinger .ct_attrs = target_core_fabric_item_attrs, 260c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 261c66ac9dbSNicholas Bellinger }; 262c66ac9dbSNicholas Bellinger 263c66ac9dbSNicholas Bellinger static struct configfs_subsystem target_core_fabrics = { 264c66ac9dbSNicholas Bellinger .su_group = { 265c66ac9dbSNicholas Bellinger .cg_item = { 266c66ac9dbSNicholas Bellinger .ci_namebuf = "target", 267c66ac9dbSNicholas Bellinger .ci_type = &target_core_fabrics_item, 268c66ac9dbSNicholas Bellinger }, 269c66ac9dbSNicholas Bellinger }, 270c66ac9dbSNicholas Bellinger }; 271c66ac9dbSNicholas Bellinger 27256d128faSNicholas Bellinger struct configfs_subsystem *target_core_subsystem[] = { 273c66ac9dbSNicholas Bellinger &target_core_fabrics, 274c66ac9dbSNicholas Bellinger NULL, 275c66ac9dbSNicholas Bellinger }; 276c66ac9dbSNicholas Bellinger 277c66ac9dbSNicholas Bellinger /*############################################################################## 278c66ac9dbSNicholas Bellinger // Start functions called by external Target Fabrics Modules 279c66ac9dbSNicholas Bellinger //############################################################################*/ 280c66ac9dbSNicholas Bellinger 281c66ac9dbSNicholas Bellinger /* 282c66ac9dbSNicholas Bellinger * First function called by fabric modules to: 283c66ac9dbSNicholas Bellinger * 284c66ac9dbSNicholas Bellinger * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. 285c66ac9dbSNicholas Bellinger * 2) Add struct target_fabric_configfs to g_tf_list 286c66ac9dbSNicholas Bellinger * 3) Return struct target_fabric_configfs to fabric module to be passed 287c66ac9dbSNicholas Bellinger * into target_fabric_configfs_register(). 288c66ac9dbSNicholas Bellinger */ 289c66ac9dbSNicholas Bellinger struct target_fabric_configfs *target_fabric_configfs_init( 290c66ac9dbSNicholas Bellinger struct module *fabric_mod, 291c66ac9dbSNicholas Bellinger const char *name) 292c66ac9dbSNicholas Bellinger { 293c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 294c66ac9dbSNicholas Bellinger 295c66ac9dbSNicholas Bellinger if (!(name)) { 2966708bb27SAndy Grover pr_err("Unable to locate passed fabric name\n"); 297e3d6f909SAndy Grover return ERR_PTR(-EINVAL); 298c66ac9dbSNicholas Bellinger } 29960d645a4SDan Carpenter if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { 3006708bb27SAndy Grover pr_err("Passed name: %s exceeds TARGET_FABRIC" 301c66ac9dbSNicholas Bellinger "_NAME_SIZE\n", name); 302e3d6f909SAndy Grover return ERR_PTR(-EINVAL); 303c66ac9dbSNicholas Bellinger } 304c66ac9dbSNicholas Bellinger 305c66ac9dbSNicholas Bellinger tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); 3066708bb27SAndy Grover if (!tf) 307e3d6f909SAndy Grover return ERR_PTR(-ENOMEM); 308c66ac9dbSNicholas Bellinger 309c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&tf->tf_list); 310c66ac9dbSNicholas Bellinger atomic_set(&tf->tf_access_cnt, 0); 311c66ac9dbSNicholas Bellinger /* 312c66ac9dbSNicholas Bellinger * Setup the default generic struct config_item_type's (cits) in 313c66ac9dbSNicholas Bellinger * struct target_fabric_configfs->tf_cit_tmpl 314c66ac9dbSNicholas Bellinger */ 315c66ac9dbSNicholas Bellinger tf->tf_module = fabric_mod; 316c66ac9dbSNicholas Bellinger target_fabric_setup_cits(tf); 317c66ac9dbSNicholas Bellinger 318c66ac9dbSNicholas Bellinger tf->tf_subsys = target_core_subsystem[0]; 319c66ac9dbSNicholas Bellinger snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); 320c66ac9dbSNicholas Bellinger 321c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 322c66ac9dbSNicholas Bellinger list_add_tail(&tf->tf_list, &g_tf_list); 323c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 324c66ac9dbSNicholas Bellinger 3256708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" 326c66ac9dbSNicholas Bellinger ">>>>>>>>>>>>>>\n"); 3276708bb27SAndy Grover pr_debug("Initialized struct target_fabric_configfs: %p for" 328c66ac9dbSNicholas Bellinger " %s\n", tf, tf->tf_name); 329c66ac9dbSNicholas Bellinger return tf; 330c66ac9dbSNicholas Bellinger } 331c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_init); 332c66ac9dbSNicholas Bellinger 333c66ac9dbSNicholas Bellinger /* 334c66ac9dbSNicholas Bellinger * Called by fabric plugins after FAILED target_fabric_configfs_register() call. 335c66ac9dbSNicholas Bellinger */ 336c66ac9dbSNicholas Bellinger void target_fabric_configfs_free( 337c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 338c66ac9dbSNicholas Bellinger { 339c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 340c66ac9dbSNicholas Bellinger list_del(&tf->tf_list); 341c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 342c66ac9dbSNicholas Bellinger 343c66ac9dbSNicholas Bellinger kfree(tf); 344c66ac9dbSNicholas Bellinger } 345c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_free); 346c66ac9dbSNicholas Bellinger 347c66ac9dbSNicholas Bellinger /* 348c66ac9dbSNicholas Bellinger * Perform a sanity check of the passed tf->tf_ops before completing 349c66ac9dbSNicholas Bellinger * TCM fabric module registration. 350c66ac9dbSNicholas Bellinger */ 351c66ac9dbSNicholas Bellinger static int target_fabric_tf_ops_check( 352c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 353c66ac9dbSNicholas Bellinger { 354c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo = &tf->tf_ops; 355c66ac9dbSNicholas Bellinger 3566708bb27SAndy Grover if (!tfo->get_fabric_name) { 3576708bb27SAndy Grover pr_err("Missing tfo->get_fabric_name()\n"); 358c66ac9dbSNicholas Bellinger return -EINVAL; 359c66ac9dbSNicholas Bellinger } 3606708bb27SAndy Grover if (!tfo->get_fabric_proto_ident) { 3616708bb27SAndy Grover pr_err("Missing tfo->get_fabric_proto_ident()\n"); 362c66ac9dbSNicholas Bellinger return -EINVAL; 363c66ac9dbSNicholas Bellinger } 3646708bb27SAndy Grover if (!tfo->tpg_get_wwn) { 3656708bb27SAndy Grover pr_err("Missing tfo->tpg_get_wwn()\n"); 366c66ac9dbSNicholas Bellinger return -EINVAL; 367c66ac9dbSNicholas Bellinger } 3686708bb27SAndy Grover if (!tfo->tpg_get_tag) { 3696708bb27SAndy Grover pr_err("Missing tfo->tpg_get_tag()\n"); 370c66ac9dbSNicholas Bellinger return -EINVAL; 371c66ac9dbSNicholas Bellinger } 3726708bb27SAndy Grover if (!tfo->tpg_get_default_depth) { 3736708bb27SAndy Grover pr_err("Missing tfo->tpg_get_default_depth()\n"); 374c66ac9dbSNicholas Bellinger return -EINVAL; 375c66ac9dbSNicholas Bellinger } 3766708bb27SAndy Grover if (!tfo->tpg_get_pr_transport_id) { 3776708bb27SAndy Grover pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); 378c66ac9dbSNicholas Bellinger return -EINVAL; 379c66ac9dbSNicholas Bellinger } 3806708bb27SAndy Grover if (!tfo->tpg_get_pr_transport_id_len) { 3816708bb27SAndy Grover pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); 382c66ac9dbSNicholas Bellinger return -EINVAL; 383c66ac9dbSNicholas Bellinger } 3846708bb27SAndy Grover if (!tfo->tpg_check_demo_mode) { 3856708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode()\n"); 386c66ac9dbSNicholas Bellinger return -EINVAL; 387c66ac9dbSNicholas Bellinger } 3886708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_cache) { 3896708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); 390c66ac9dbSNicholas Bellinger return -EINVAL; 391c66ac9dbSNicholas Bellinger } 3926708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_write_protect) { 3936708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); 394c66ac9dbSNicholas Bellinger return -EINVAL; 395c66ac9dbSNicholas Bellinger } 3966708bb27SAndy Grover if (!tfo->tpg_check_prod_mode_write_protect) { 3976708bb27SAndy Grover pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); 398c66ac9dbSNicholas Bellinger return -EINVAL; 399c66ac9dbSNicholas Bellinger } 4006708bb27SAndy Grover if (!tfo->tpg_alloc_fabric_acl) { 4016708bb27SAndy Grover pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); 402c66ac9dbSNicholas Bellinger return -EINVAL; 403c66ac9dbSNicholas Bellinger } 4046708bb27SAndy Grover if (!tfo->tpg_release_fabric_acl) { 4056708bb27SAndy Grover pr_err("Missing tfo->tpg_release_fabric_acl()\n"); 406c66ac9dbSNicholas Bellinger return -EINVAL; 407c66ac9dbSNicholas Bellinger } 4086708bb27SAndy Grover if (!tfo->tpg_get_inst_index) { 4096708bb27SAndy Grover pr_err("Missing tfo->tpg_get_inst_index()\n"); 410c66ac9dbSNicholas Bellinger return -EINVAL; 411c66ac9dbSNicholas Bellinger } 41235462975SChristoph Hellwig if (!tfo->release_cmd) { 4136708bb27SAndy Grover pr_err("Missing tfo->release_cmd()\n"); 414c66ac9dbSNicholas Bellinger return -EINVAL; 415c66ac9dbSNicholas Bellinger } 4166708bb27SAndy Grover if (!tfo->shutdown_session) { 4176708bb27SAndy Grover pr_err("Missing tfo->shutdown_session()\n"); 418c66ac9dbSNicholas Bellinger return -EINVAL; 419c66ac9dbSNicholas Bellinger } 4206708bb27SAndy Grover if (!tfo->close_session) { 4216708bb27SAndy Grover pr_err("Missing tfo->close_session()\n"); 422c66ac9dbSNicholas Bellinger return -EINVAL; 423c66ac9dbSNicholas Bellinger } 4246708bb27SAndy Grover if (!tfo->sess_get_index) { 4256708bb27SAndy Grover pr_err("Missing tfo->sess_get_index()\n"); 426c66ac9dbSNicholas Bellinger return -EINVAL; 427c66ac9dbSNicholas Bellinger } 4286708bb27SAndy Grover if (!tfo->write_pending) { 4296708bb27SAndy Grover pr_err("Missing tfo->write_pending()\n"); 430c66ac9dbSNicholas Bellinger return -EINVAL; 431c66ac9dbSNicholas Bellinger } 4326708bb27SAndy Grover if (!tfo->write_pending_status) { 4336708bb27SAndy Grover pr_err("Missing tfo->write_pending_status()\n"); 434c66ac9dbSNicholas Bellinger return -EINVAL; 435c66ac9dbSNicholas Bellinger } 4366708bb27SAndy Grover if (!tfo->set_default_node_attributes) { 4376708bb27SAndy Grover pr_err("Missing tfo->set_default_node_attributes()\n"); 438c66ac9dbSNicholas Bellinger return -EINVAL; 439c66ac9dbSNicholas Bellinger } 4406708bb27SAndy Grover if (!tfo->get_task_tag) { 4416708bb27SAndy Grover pr_err("Missing tfo->get_task_tag()\n"); 442c66ac9dbSNicholas Bellinger return -EINVAL; 443c66ac9dbSNicholas Bellinger } 4446708bb27SAndy Grover if (!tfo->get_cmd_state) { 4456708bb27SAndy Grover pr_err("Missing tfo->get_cmd_state()\n"); 446c66ac9dbSNicholas Bellinger return -EINVAL; 447c66ac9dbSNicholas Bellinger } 4486708bb27SAndy Grover if (!tfo->queue_data_in) { 4496708bb27SAndy Grover pr_err("Missing tfo->queue_data_in()\n"); 450c66ac9dbSNicholas Bellinger return -EINVAL; 451c66ac9dbSNicholas Bellinger } 4526708bb27SAndy Grover if (!tfo->queue_status) { 4536708bb27SAndy Grover pr_err("Missing tfo->queue_status()\n"); 454c66ac9dbSNicholas Bellinger return -EINVAL; 455c66ac9dbSNicholas Bellinger } 4566708bb27SAndy Grover if (!tfo->queue_tm_rsp) { 4576708bb27SAndy Grover pr_err("Missing tfo->queue_tm_rsp()\n"); 458c66ac9dbSNicholas Bellinger return -EINVAL; 459c66ac9dbSNicholas Bellinger } 460131e6abcSNicholas Bellinger if (!tfo->aborted_task) { 461131e6abcSNicholas Bellinger pr_err("Missing tfo->aborted_task()\n"); 462131e6abcSNicholas Bellinger return -EINVAL; 463131e6abcSNicholas Bellinger } 464c66ac9dbSNicholas Bellinger /* 465c66ac9dbSNicholas Bellinger * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 466c66ac9dbSNicholas Bellinger * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 467c66ac9dbSNicholas Bellinger * target_core_fabric_configfs.c WWN+TPG group context code. 468c66ac9dbSNicholas Bellinger */ 4696708bb27SAndy Grover if (!tfo->fabric_make_wwn) { 4706708bb27SAndy Grover pr_err("Missing tfo->fabric_make_wwn()\n"); 471c66ac9dbSNicholas Bellinger return -EINVAL; 472c66ac9dbSNicholas Bellinger } 4736708bb27SAndy Grover if (!tfo->fabric_drop_wwn) { 4746708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_wwn()\n"); 475c66ac9dbSNicholas Bellinger return -EINVAL; 476c66ac9dbSNicholas Bellinger } 4776708bb27SAndy Grover if (!tfo->fabric_make_tpg) { 4786708bb27SAndy Grover pr_err("Missing tfo->fabric_make_tpg()\n"); 479c66ac9dbSNicholas Bellinger return -EINVAL; 480c66ac9dbSNicholas Bellinger } 4816708bb27SAndy Grover if (!tfo->fabric_drop_tpg) { 4826708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_tpg()\n"); 483c66ac9dbSNicholas Bellinger return -EINVAL; 484c66ac9dbSNicholas Bellinger } 485c66ac9dbSNicholas Bellinger 486c66ac9dbSNicholas Bellinger return 0; 487c66ac9dbSNicholas Bellinger } 488c66ac9dbSNicholas Bellinger 489c66ac9dbSNicholas Bellinger /* 490c66ac9dbSNicholas Bellinger * Called 2nd from fabric module with returned parameter of 491c66ac9dbSNicholas Bellinger * struct target_fabric_configfs * from target_fabric_configfs_init(). 492c66ac9dbSNicholas Bellinger * 493c66ac9dbSNicholas Bellinger * Upon a successful registration, the new fabric's struct config_item is 494c66ac9dbSNicholas Bellinger * return. Also, a pointer to this struct is set in the passed 495c66ac9dbSNicholas Bellinger * struct target_fabric_configfs. 496c66ac9dbSNicholas Bellinger */ 497c66ac9dbSNicholas Bellinger int target_fabric_configfs_register( 498c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 499c66ac9dbSNicholas Bellinger { 500c66ac9dbSNicholas Bellinger int ret; 501c66ac9dbSNicholas Bellinger 5026708bb27SAndy Grover if (!tf) { 5036708bb27SAndy Grover pr_err("Unable to locate target_fabric_configfs" 504c66ac9dbSNicholas Bellinger " pointer\n"); 505c66ac9dbSNicholas Bellinger return -EINVAL; 506c66ac9dbSNicholas Bellinger } 5076708bb27SAndy Grover if (!tf->tf_subsys) { 5086708bb27SAndy Grover pr_err("Unable to target struct config_subsystem" 509c66ac9dbSNicholas Bellinger " pointer\n"); 510c66ac9dbSNicholas Bellinger return -EINVAL; 511c66ac9dbSNicholas Bellinger } 512c66ac9dbSNicholas Bellinger ret = target_fabric_tf_ops_check(tf); 513c66ac9dbSNicholas Bellinger if (ret < 0) 514c66ac9dbSNicholas Bellinger return ret; 515c66ac9dbSNicholas Bellinger 5166708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" 517c66ac9dbSNicholas Bellinger ">>>>>>>>>>\n"); 518c66ac9dbSNicholas Bellinger return 0; 519c66ac9dbSNicholas Bellinger } 520c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_register); 521c66ac9dbSNicholas Bellinger 522c66ac9dbSNicholas Bellinger void target_fabric_configfs_deregister( 523c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 524c66ac9dbSNicholas Bellinger { 525c66ac9dbSNicholas Bellinger struct configfs_subsystem *su; 526c66ac9dbSNicholas Bellinger 5276708bb27SAndy Grover if (!tf) { 5286708bb27SAndy Grover pr_err("Unable to locate passed target_fabric_" 529c66ac9dbSNicholas Bellinger "configfs\n"); 530c66ac9dbSNicholas Bellinger return; 531c66ac9dbSNicholas Bellinger } 532c66ac9dbSNicholas Bellinger su = tf->tf_subsys; 5336708bb27SAndy Grover if (!su) { 5346708bb27SAndy Grover pr_err("Unable to locate passed tf->tf_subsys" 535c66ac9dbSNicholas Bellinger " pointer\n"); 536c66ac9dbSNicholas Bellinger return; 537c66ac9dbSNicholas Bellinger } 5386708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" 539c66ac9dbSNicholas Bellinger ">>>>>>>>>>>>\n"); 540c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 541c66ac9dbSNicholas Bellinger if (atomic_read(&tf->tf_access_cnt)) { 542c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 5436708bb27SAndy Grover pr_err("Non zero tf->tf_access_cnt for fabric %s\n", 544c66ac9dbSNicholas Bellinger tf->tf_name); 545c66ac9dbSNicholas Bellinger BUG(); 546c66ac9dbSNicholas Bellinger } 547c66ac9dbSNicholas Bellinger list_del(&tf->tf_list); 548c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 549c66ac9dbSNicholas Bellinger 5506708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" 551c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 552c66ac9dbSNicholas Bellinger tf->tf_module = NULL; 553c66ac9dbSNicholas Bellinger tf->tf_subsys = NULL; 554c66ac9dbSNicholas Bellinger kfree(tf); 555c66ac9dbSNicholas Bellinger 5566708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" 557c66ac9dbSNicholas Bellinger ">>>>>\n"); 558c66ac9dbSNicholas Bellinger } 559c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_deregister); 560c66ac9dbSNicholas Bellinger 561c66ac9dbSNicholas Bellinger /*############################################################################## 562c66ac9dbSNicholas Bellinger // Stop functions called by external Target Fabrics Modules 563c66ac9dbSNicholas Bellinger //############################################################################*/ 564c66ac9dbSNicholas Bellinger 565c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_dev_attrib_cit */ 566c66ac9dbSNicholas Bellinger 567c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB_SHOW(_name) \ 568c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_show_attr_##_name( \ 569c66ac9dbSNicholas Bellinger struct se_dev_attrib *da, \ 570c66ac9dbSNicholas Bellinger char *page) \ 571c66ac9dbSNicholas Bellinger { \ 5720fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%u\n", \ 5730fd97ccfSChristoph Hellwig (u32)da->da_dev->dev_attrib._name); \ 574c66ac9dbSNicholas Bellinger } 575c66ac9dbSNicholas Bellinger 576c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB_STORE(_name) \ 577c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_store_attr_##_name( \ 578c66ac9dbSNicholas Bellinger struct se_dev_attrib *da, \ 579c66ac9dbSNicholas Bellinger const char *page, \ 580c66ac9dbSNicholas Bellinger size_t count) \ 581c66ac9dbSNicholas Bellinger { \ 582c66ac9dbSNicholas Bellinger unsigned long val; \ 583c66ac9dbSNicholas Bellinger int ret; \ 584c66ac9dbSNicholas Bellinger \ 58557103d7fSJingoo Han ret = kstrtoul(page, 0, &val); \ 586c66ac9dbSNicholas Bellinger if (ret < 0) { \ 58757103d7fSJingoo Han pr_err("kstrtoul() failed with" \ 588c66ac9dbSNicholas Bellinger " ret: %d\n", ret); \ 589c66ac9dbSNicholas Bellinger return -EINVAL; \ 590c66ac9dbSNicholas Bellinger } \ 5910fd97ccfSChristoph Hellwig ret = se_dev_set_##_name(da->da_dev, (u32)val); \ 592c66ac9dbSNicholas Bellinger \ 593c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; \ 594c66ac9dbSNicholas Bellinger } 595c66ac9dbSNicholas Bellinger 596c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB(_name) \ 597c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_SHOW(_name); \ 598c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_STORE(_name); 599c66ac9dbSNicholas Bellinger 600c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB_RO(_name) \ 601c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_SHOW(_name); 602c66ac9dbSNicholas Bellinger 603c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); 604c66ac9dbSNicholas Bellinger #define SE_DEV_ATTR(_name, _mode) \ 605c66ac9dbSNicholas Bellinger static struct target_core_dev_attrib_attribute \ 606c66ac9dbSNicholas Bellinger target_core_dev_attrib_##_name = \ 607c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 608c66ac9dbSNicholas Bellinger target_core_dev_show_attr_##_name, \ 609c66ac9dbSNicholas Bellinger target_core_dev_store_attr_##_name); 610c66ac9dbSNicholas Bellinger 611c66ac9dbSNicholas Bellinger #define SE_DEV_ATTR_RO(_name); \ 612c66ac9dbSNicholas Bellinger static struct target_core_dev_attrib_attribute \ 613c66ac9dbSNicholas Bellinger target_core_dev_attrib_##_name = \ 614c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 615c66ac9dbSNicholas Bellinger target_core_dev_show_attr_##_name); 616c66ac9dbSNicholas Bellinger 617adfa9570STregaron Bayly DEF_DEV_ATTRIB(emulate_model_alias); 618adfa9570STregaron Bayly SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR); 619adfa9570STregaron Bayly 620c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_dpo); 621c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); 622c66ac9dbSNicholas Bellinger 623c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_fua_write); 624c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); 625c66ac9dbSNicholas Bellinger 626c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_fua_read); 627c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); 628c66ac9dbSNicholas Bellinger 629c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_write_cache); 630c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); 631c66ac9dbSNicholas Bellinger 632c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); 633c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); 634c66ac9dbSNicholas Bellinger 635c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_tas); 636c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); 637c66ac9dbSNicholas Bellinger 638c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_tpu); 639c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); 640c66ac9dbSNicholas Bellinger 641c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_tpws); 642c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); 643c66ac9dbSNicholas Bellinger 6440123a9ecSNicholas Bellinger DEF_DEV_ATTRIB(emulate_caw); 6450123a9ecSNicholas Bellinger SE_DEV_ATTR(emulate_caw, S_IRUGO | S_IWUSR); 6460123a9ecSNicholas Bellinger 647d397a445SNicholas Bellinger DEF_DEV_ATTRIB(emulate_3pc); 648d397a445SNicholas Bellinger SE_DEV_ATTR(emulate_3pc, S_IRUGO | S_IWUSR); 649d397a445SNicholas Bellinger 6502ed22c9cSNicholas Bellinger DEF_DEV_ATTRIB(pi_prot_type); 6512ed22c9cSNicholas Bellinger SE_DEV_ATTR(pi_prot_type, S_IRUGO | S_IWUSR); 6522ed22c9cSNicholas Bellinger 6532ed22c9cSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_pi_prot_type); 6542ed22c9cSNicholas Bellinger SE_DEV_ATTR_RO(hw_pi_prot_type); 6552ed22c9cSNicholas Bellinger 6562ed22c9cSNicholas Bellinger DEF_DEV_ATTRIB(pi_prot_format); 6572ed22c9cSNicholas Bellinger SE_DEV_ATTR(pi_prot_format, S_IRUGO | S_IWUSR); 6582ed22c9cSNicholas Bellinger 659c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(enforce_pr_isids); 660c66ac9dbSNicholas Bellinger SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); 661c66ac9dbSNicholas Bellinger 662e22a7f07SRoland Dreier DEF_DEV_ATTRIB(is_nonrot); 663e22a7f07SRoland Dreier SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); 664e22a7f07SRoland Dreier 6655de619a3SNicholas Bellinger DEF_DEV_ATTRIB(emulate_rest_reord); 6665de619a3SNicholas Bellinger SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); 6675de619a3SNicholas Bellinger 668c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_block_size); 669c66ac9dbSNicholas Bellinger SE_DEV_ATTR_RO(hw_block_size); 670c66ac9dbSNicholas Bellinger 671c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(block_size); 672c66ac9dbSNicholas Bellinger SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); 673c66ac9dbSNicholas Bellinger 674c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_max_sectors); 675c66ac9dbSNicholas Bellinger SE_DEV_ATTR_RO(hw_max_sectors); 676c66ac9dbSNicholas Bellinger 677015487b8SRoland Dreier DEF_DEV_ATTRIB(fabric_max_sectors); 678015487b8SRoland Dreier SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); 679015487b8SRoland Dreier 680c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(optimal_sectors); 681c66ac9dbSNicholas Bellinger SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); 682c66ac9dbSNicholas Bellinger 683c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_queue_depth); 684c66ac9dbSNicholas Bellinger SE_DEV_ATTR_RO(hw_queue_depth); 685c66ac9dbSNicholas Bellinger 686c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(queue_depth); 687c66ac9dbSNicholas Bellinger SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); 688c66ac9dbSNicholas Bellinger 689c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(max_unmap_lba_count); 690c66ac9dbSNicholas Bellinger SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); 691c66ac9dbSNicholas Bellinger 692c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(max_unmap_block_desc_count); 693c66ac9dbSNicholas Bellinger SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); 694c66ac9dbSNicholas Bellinger 695c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(unmap_granularity); 696c66ac9dbSNicholas Bellinger SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); 697c66ac9dbSNicholas Bellinger 698c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(unmap_granularity_alignment); 699c66ac9dbSNicholas Bellinger SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); 700c66ac9dbSNicholas Bellinger 701773cbaf7SNicholas Bellinger DEF_DEV_ATTRIB(max_write_same_len); 702773cbaf7SNicholas Bellinger SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR); 703773cbaf7SNicholas Bellinger 704c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); 705c66ac9dbSNicholas Bellinger 706c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrib_attrs[] = { 707adfa9570STregaron Bayly &target_core_dev_attrib_emulate_model_alias.attr, 708c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_dpo.attr, 709c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_fua_write.attr, 710c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_fua_read.attr, 711c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_write_cache.attr, 712c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, 713c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_tas.attr, 714c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_tpu.attr, 715c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_tpws.attr, 7160123a9ecSNicholas Bellinger &target_core_dev_attrib_emulate_caw.attr, 717d397a445SNicholas Bellinger &target_core_dev_attrib_emulate_3pc.attr, 7182ed22c9cSNicholas Bellinger &target_core_dev_attrib_pi_prot_type.attr, 7192ed22c9cSNicholas Bellinger &target_core_dev_attrib_hw_pi_prot_type.attr, 7202ed22c9cSNicholas Bellinger &target_core_dev_attrib_pi_prot_format.attr, 721c66ac9dbSNicholas Bellinger &target_core_dev_attrib_enforce_pr_isids.attr, 722e22a7f07SRoland Dreier &target_core_dev_attrib_is_nonrot.attr, 7235de619a3SNicholas Bellinger &target_core_dev_attrib_emulate_rest_reord.attr, 724c66ac9dbSNicholas Bellinger &target_core_dev_attrib_hw_block_size.attr, 725c66ac9dbSNicholas Bellinger &target_core_dev_attrib_block_size.attr, 726c66ac9dbSNicholas Bellinger &target_core_dev_attrib_hw_max_sectors.attr, 727015487b8SRoland Dreier &target_core_dev_attrib_fabric_max_sectors.attr, 728c66ac9dbSNicholas Bellinger &target_core_dev_attrib_optimal_sectors.attr, 729c66ac9dbSNicholas Bellinger &target_core_dev_attrib_hw_queue_depth.attr, 730c66ac9dbSNicholas Bellinger &target_core_dev_attrib_queue_depth.attr, 731c66ac9dbSNicholas Bellinger &target_core_dev_attrib_max_unmap_lba_count.attr, 732c66ac9dbSNicholas Bellinger &target_core_dev_attrib_max_unmap_block_desc_count.attr, 733c66ac9dbSNicholas Bellinger &target_core_dev_attrib_unmap_granularity.attr, 734c66ac9dbSNicholas Bellinger &target_core_dev_attrib_unmap_granularity_alignment.attr, 735773cbaf7SNicholas Bellinger &target_core_dev_attrib_max_write_same_len.attr, 736c66ac9dbSNicholas Bellinger NULL, 737c66ac9dbSNicholas Bellinger }; 738c66ac9dbSNicholas Bellinger 739c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_attrib_ops = { 740c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_attrib_attr_show, 741c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_attrib_attr_store, 742c66ac9dbSNicholas Bellinger }; 743c66ac9dbSNicholas Bellinger 744c66ac9dbSNicholas Bellinger static struct config_item_type target_core_dev_attrib_cit = { 745c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_dev_attrib_ops, 746c66ac9dbSNicholas Bellinger .ct_attrs = target_core_dev_attrib_attrs, 747c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 748c66ac9dbSNicholas Bellinger }; 749c66ac9dbSNicholas Bellinger 750c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_dev_attrib_cit */ 751c66ac9dbSNicholas Bellinger 752c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_dev_wwn_cit */ 753c66ac9dbSNicholas Bellinger 754c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); 755c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR(_name, _mode) \ 756c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ 757c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 758c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name, \ 759c66ac9dbSNicholas Bellinger target_core_dev_wwn_store_attr_##_name); 760c66ac9dbSNicholas Bellinger 761c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR_RO(_name); \ 762c66ac9dbSNicholas Bellinger do { \ 763c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute \ 764c66ac9dbSNicholas Bellinger target_core_dev_wwn_##_name = \ 765c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 766c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name); \ 767c66ac9dbSNicholas Bellinger } while (0); 768c66ac9dbSNicholas Bellinger 769c66ac9dbSNicholas Bellinger /* 770c66ac9dbSNicholas Bellinger * VPD page 0x80 Unit serial 771c66ac9dbSNicholas Bellinger */ 772c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( 773c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 774c66ac9dbSNicholas Bellinger char *page) 775c66ac9dbSNicholas Bellinger { 776c66ac9dbSNicholas Bellinger return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 777c66ac9dbSNicholas Bellinger &t10_wwn->unit_serial[0]); 778c66ac9dbSNicholas Bellinger } 779c66ac9dbSNicholas Bellinger 780c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( 781c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 782c66ac9dbSNicholas Bellinger const char *page, 783c66ac9dbSNicholas Bellinger size_t count) 784c66ac9dbSNicholas Bellinger { 7850fd97ccfSChristoph Hellwig struct se_device *dev = t10_wwn->t10_dev; 786c66ac9dbSNicholas Bellinger unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; 787c66ac9dbSNicholas Bellinger 788c66ac9dbSNicholas Bellinger /* 789c66ac9dbSNicholas Bellinger * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 790c66ac9dbSNicholas Bellinger * from the struct scsi_device level firmware, do not allow 791c66ac9dbSNicholas Bellinger * VPD Unit Serial to be emulated. 792c66ac9dbSNicholas Bellinger * 793c66ac9dbSNicholas Bellinger * Note this struct scsi_device could also be emulating VPD 794c66ac9dbSNicholas Bellinger * information from its drivers/scsi LLD. But for now we assume 795c66ac9dbSNicholas Bellinger * it is doing 'the right thing' wrt a world wide unique 796c66ac9dbSNicholas Bellinger * VPD Unit Serial Number that OS dependent multipath can depend on. 797c66ac9dbSNicholas Bellinger */ 7980fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { 7996708bb27SAndy Grover pr_err("Underlying SCSI device firmware provided VPD" 800c66ac9dbSNicholas Bellinger " Unit Serial, ignoring request\n"); 801c66ac9dbSNicholas Bellinger return -EOPNOTSUPP; 802c66ac9dbSNicholas Bellinger } 803c66ac9dbSNicholas Bellinger 80460d645a4SDan Carpenter if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 8056708bb27SAndy Grover pr_err("Emulated VPD Unit Serial exceeds" 806c66ac9dbSNicholas Bellinger " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 807c66ac9dbSNicholas Bellinger return -EOVERFLOW; 808c66ac9dbSNicholas Bellinger } 809c66ac9dbSNicholas Bellinger /* 810c66ac9dbSNicholas Bellinger * Check to see if any active $FABRIC_MOD exports exist. If they 811c66ac9dbSNicholas Bellinger * do exist, fail here as changing this information on the fly 812c66ac9dbSNicholas Bellinger * (underneath the initiator side OS dependent multipath code) 813c66ac9dbSNicholas Bellinger * could cause negative effects. 814c66ac9dbSNicholas Bellinger */ 8150fd97ccfSChristoph Hellwig if (dev->export_count) { 8166708bb27SAndy Grover pr_err("Unable to set VPD Unit Serial while" 817c66ac9dbSNicholas Bellinger " active %d $FABRIC_MOD exports exist\n", 8180fd97ccfSChristoph Hellwig dev->export_count); 819c66ac9dbSNicholas Bellinger return -EINVAL; 820c66ac9dbSNicholas Bellinger } 8210fd97ccfSChristoph Hellwig 822c66ac9dbSNicholas Bellinger /* 823c66ac9dbSNicholas Bellinger * This currently assumes ASCII encoding for emulated VPD Unit Serial. 824c66ac9dbSNicholas Bellinger * 825c66ac9dbSNicholas Bellinger * Also, strip any newline added from the userspace 826c66ac9dbSNicholas Bellinger * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 827c66ac9dbSNicholas Bellinger */ 828c66ac9dbSNicholas Bellinger memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); 829c66ac9dbSNicholas Bellinger snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 8300fd97ccfSChristoph Hellwig snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 831c66ac9dbSNicholas Bellinger "%s", strstrip(buf)); 8320fd97ccfSChristoph Hellwig dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; 833c66ac9dbSNicholas Bellinger 8346708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 8350fd97ccfSChristoph Hellwig " %s\n", dev->t10_wwn.unit_serial); 836c66ac9dbSNicholas Bellinger 837c66ac9dbSNicholas Bellinger return count; 838c66ac9dbSNicholas Bellinger } 839c66ac9dbSNicholas Bellinger 840c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); 841c66ac9dbSNicholas Bellinger 842c66ac9dbSNicholas Bellinger /* 843c66ac9dbSNicholas Bellinger * VPD page 0x83 Protocol Identifier 844c66ac9dbSNicholas Bellinger */ 845c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( 846c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 847c66ac9dbSNicholas Bellinger char *page) 848c66ac9dbSNicholas Bellinger { 849c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; 850c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; 851c66ac9dbSNicholas Bellinger ssize_t len = 0; 852c66ac9dbSNicholas Bellinger 853c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); 854c66ac9dbSNicholas Bellinger 855c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); 856c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 8576708bb27SAndy Grover if (!vpd->protocol_identifier_set) 858c66ac9dbSNicholas Bellinger continue; 859c66ac9dbSNicholas Bellinger 860c66ac9dbSNicholas Bellinger transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 861c66ac9dbSNicholas Bellinger 8626708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 863c66ac9dbSNicholas Bellinger break; 864c66ac9dbSNicholas Bellinger 865c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 866c66ac9dbSNicholas Bellinger } 867c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); 868c66ac9dbSNicholas Bellinger 869c66ac9dbSNicholas Bellinger return len; 870c66ac9dbSNicholas Bellinger } 871c66ac9dbSNicholas Bellinger 872c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( 873c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 874c66ac9dbSNicholas Bellinger const char *page, 875c66ac9dbSNicholas Bellinger size_t count) 876c66ac9dbSNicholas Bellinger { 877c66ac9dbSNicholas Bellinger return -ENOSYS; 878c66ac9dbSNicholas Bellinger } 879c66ac9dbSNicholas Bellinger 880c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); 881c66ac9dbSNicholas Bellinger 882c66ac9dbSNicholas Bellinger /* 883c66ac9dbSNicholas Bellinger * Generic wrapper for dumping VPD identifiers by association. 884c66ac9dbSNicholas Bellinger */ 885c66ac9dbSNicholas Bellinger #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 886c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_##_name( \ 887c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, \ 888c66ac9dbSNicholas Bellinger char *page) \ 889c66ac9dbSNicholas Bellinger { \ 890c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; \ 891c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; \ 892c66ac9dbSNicholas Bellinger ssize_t len = 0; \ 893c66ac9dbSNicholas Bellinger \ 894c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); \ 895c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 896c66ac9dbSNicholas Bellinger if (vpd->association != _assoc) \ 897c66ac9dbSNicholas Bellinger continue; \ 898c66ac9dbSNicholas Bellinger \ 899c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 900c66ac9dbSNicholas Bellinger transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 9016708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 902c66ac9dbSNicholas Bellinger break; \ 903c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 904c66ac9dbSNicholas Bellinger \ 905c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 906c66ac9dbSNicholas Bellinger transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 9076708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 908c66ac9dbSNicholas Bellinger break; \ 909c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 910c66ac9dbSNicholas Bellinger \ 911c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 912c66ac9dbSNicholas Bellinger transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 9136708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 914c66ac9dbSNicholas Bellinger break; \ 915c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 916c66ac9dbSNicholas Bellinger } \ 917c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); \ 918c66ac9dbSNicholas Bellinger \ 919c66ac9dbSNicholas Bellinger return len; \ 920c66ac9dbSNicholas Bellinger } 921c66ac9dbSNicholas Bellinger 922c66ac9dbSNicholas Bellinger /* 923163cd5faSAndy Shevchenko * VPD page 0x83 Association: Logical Unit 924c66ac9dbSNicholas Bellinger */ 925c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 926c66ac9dbSNicholas Bellinger 927c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( 928c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 929c66ac9dbSNicholas Bellinger const char *page, 930c66ac9dbSNicholas Bellinger size_t count) 931c66ac9dbSNicholas Bellinger { 932c66ac9dbSNicholas Bellinger return -ENOSYS; 933c66ac9dbSNicholas Bellinger } 934c66ac9dbSNicholas Bellinger 935c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); 936c66ac9dbSNicholas Bellinger 937c66ac9dbSNicholas Bellinger /* 938c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: Target Port 939c66ac9dbSNicholas Bellinger */ 940c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 941c66ac9dbSNicholas Bellinger 942c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( 943c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 944c66ac9dbSNicholas Bellinger const char *page, 945c66ac9dbSNicholas Bellinger size_t count) 946c66ac9dbSNicholas Bellinger { 947c66ac9dbSNicholas Bellinger return -ENOSYS; 948c66ac9dbSNicholas Bellinger } 949c66ac9dbSNicholas Bellinger 950c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); 951c66ac9dbSNicholas Bellinger 952c66ac9dbSNicholas Bellinger /* 953c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: SCSI Target Device 954c66ac9dbSNicholas Bellinger */ 955c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 956c66ac9dbSNicholas Bellinger 957c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( 958c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 959c66ac9dbSNicholas Bellinger const char *page, 960c66ac9dbSNicholas Bellinger size_t count) 961c66ac9dbSNicholas Bellinger { 962c66ac9dbSNicholas Bellinger return -ENOSYS; 963c66ac9dbSNicholas Bellinger } 964c66ac9dbSNicholas Bellinger 965c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); 966c66ac9dbSNicholas Bellinger 967c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); 968c66ac9dbSNicholas Bellinger 969c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 970c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_unit_serial.attr, 971c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_protocol_identifier.attr, 972c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_logical_unit.attr, 973c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_target_port.attr, 974c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, 975c66ac9dbSNicholas Bellinger NULL, 976c66ac9dbSNicholas Bellinger }; 977c66ac9dbSNicholas Bellinger 978c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_wwn_ops = { 979c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_wwn_attr_show, 980c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_wwn_attr_store, 981c66ac9dbSNicholas Bellinger }; 982c66ac9dbSNicholas Bellinger 983c66ac9dbSNicholas Bellinger static struct config_item_type target_core_dev_wwn_cit = { 984c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_dev_wwn_ops, 985c66ac9dbSNicholas Bellinger .ct_attrs = target_core_dev_wwn_attrs, 986c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 987c66ac9dbSNicholas Bellinger }; 988c66ac9dbSNicholas Bellinger 989c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_dev_wwn_cit */ 990c66ac9dbSNicholas Bellinger 991c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_dev_pr_cit */ 992c66ac9dbSNicholas Bellinger 9930fd97ccfSChristoph Hellwig CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); 994c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR(_name, _mode) \ 995c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 996c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 997c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name, \ 998c66ac9dbSNicholas Bellinger target_core_dev_pr_store_attr_##_name); 999c66ac9dbSNicholas Bellinger 1000c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR_RO(_name); \ 1001c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 1002c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 1003c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name); 1004c66ac9dbSNicholas Bellinger 1005d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, 1006d977f437SChristoph Hellwig char *page) 1007c66ac9dbSNicholas Bellinger { 1008c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1009c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1010c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1011c66ac9dbSNicholas Bellinger 1012c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1013c66ac9dbSNicholas Bellinger 1014c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1015d977f437SChristoph Hellwig if (!pr_reg) 1016d977f437SChristoph Hellwig return sprintf(page, "No SPC-3 Reservation holder\n"); 1017d977f437SChristoph Hellwig 1018c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1019d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); 1020c66ac9dbSNicholas Bellinger 1021d977f437SChristoph Hellwig return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", 1022e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1023d2843c17SAndy Grover se_nacl->initiatorname, i_buf); 1024c66ac9dbSNicholas Bellinger } 1025c66ac9dbSNicholas Bellinger 1026d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 1027d977f437SChristoph Hellwig char *page) 1028c66ac9dbSNicholas Bellinger { 1029c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1030d977f437SChristoph Hellwig ssize_t len; 1031c66ac9dbSNicholas Bellinger 1032c66ac9dbSNicholas Bellinger se_nacl = dev->dev_reserved_node_acl; 1033d977f437SChristoph Hellwig if (se_nacl) { 1034d977f437SChristoph Hellwig len = sprintf(page, 1035d977f437SChristoph Hellwig "SPC-2 Reservation: %s Initiator: %s\n", 1036e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1037c66ac9dbSNicholas Bellinger se_nacl->initiatorname); 1038d977f437SChristoph Hellwig } else { 1039d977f437SChristoph Hellwig len = sprintf(page, "No SPC-2 Reservation holder\n"); 1040d977f437SChristoph Hellwig } 1041d977f437SChristoph Hellwig return len; 1042c66ac9dbSNicholas Bellinger } 1043c66ac9dbSNicholas Bellinger 10440fd97ccfSChristoph Hellwig static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, 1045c66ac9dbSNicholas Bellinger char *page) 1046c66ac9dbSNicholas Bellinger { 1047d977f437SChristoph Hellwig int ret; 1048c66ac9dbSNicholas Bellinger 1049d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1050d977f437SChristoph Hellwig return sprintf(page, "Passthrough\n"); 1051c66ac9dbSNicholas Bellinger 1052d977f437SChristoph Hellwig spin_lock(&dev->dev_reservation_lock); 1053d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1054d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc2_res(dev, page); 1055d977f437SChristoph Hellwig else 1056d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc3_res(dev, page); 1057d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1058d977f437SChristoph Hellwig return ret; 1059c66ac9dbSNicholas Bellinger } 1060c66ac9dbSNicholas Bellinger 1061c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_holder); 1062c66ac9dbSNicholas Bellinger 1063c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( 10640fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1065c66ac9dbSNicholas Bellinger { 1066c66ac9dbSNicholas Bellinger ssize_t len = 0; 1067c66ac9dbSNicholas Bellinger 1068c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1069d977f437SChristoph Hellwig if (!dev->dev_pr_res_holder) { 1070c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1071d977f437SChristoph Hellwig } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { 1072c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: All Target" 1073c66ac9dbSNicholas Bellinger " Ports registration\n"); 1074d977f437SChristoph Hellwig } else { 1075c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: Single" 1076c66ac9dbSNicholas Bellinger " Target Port registration\n"); 1077d977f437SChristoph Hellwig } 1078c66ac9dbSNicholas Bellinger 1079d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1080c66ac9dbSNicholas Bellinger return len; 1081c66ac9dbSNicholas Bellinger } 1082c66ac9dbSNicholas Bellinger 1083c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); 1084c66ac9dbSNicholas Bellinger 1085c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_generation( 10860fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1087c66ac9dbSNicholas Bellinger { 10880fd97ccfSChristoph Hellwig return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); 1089c66ac9dbSNicholas Bellinger } 1090c66ac9dbSNicholas Bellinger 1091c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_generation); 1092c66ac9dbSNicholas Bellinger 1093c66ac9dbSNicholas Bellinger /* 1094c66ac9dbSNicholas Bellinger * res_pr_holder_tg_port 1095c66ac9dbSNicholas Bellinger */ 1096c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( 10970fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1098c66ac9dbSNicholas Bellinger { 1099c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1100c66ac9dbSNicholas Bellinger struct se_lun *lun; 1101c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg; 1102c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1103c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo; 1104c66ac9dbSNicholas Bellinger ssize_t len = 0; 1105c66ac9dbSNicholas Bellinger 1106c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1107c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 11086708bb27SAndy Grover if (!pr_reg) { 1109c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1110d977f437SChristoph Hellwig goto out_unlock; 1111c66ac9dbSNicholas Bellinger } 1112d977f437SChristoph Hellwig 1113c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1114c66ac9dbSNicholas Bellinger se_tpg = se_nacl->se_tpg; 1115c66ac9dbSNicholas Bellinger lun = pr_reg->pr_reg_tg_pt_lun; 1116e3d6f909SAndy Grover tfo = se_tpg->se_tpg_tfo; 1117c66ac9dbSNicholas Bellinger 1118c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: %s" 1119c66ac9dbSNicholas Bellinger " Target Node Endpoint: %s\n", tfo->get_fabric_name(), 1120c66ac9dbSNicholas Bellinger tfo->tpg_get_wwn(se_tpg)); 1121c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 112235d1efe8SMasanari Iida " Identifier Tag: %hu %s Portal Group Tag: %hu" 1123c66ac9dbSNicholas Bellinger " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, 1124c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), 1125c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), lun->unpacked_lun); 1126c66ac9dbSNicholas Bellinger 1127d977f437SChristoph Hellwig out_unlock: 1128d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1129c66ac9dbSNicholas Bellinger return len; 1130c66ac9dbSNicholas Bellinger } 1131c66ac9dbSNicholas Bellinger 1132c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); 1133c66ac9dbSNicholas Bellinger 1134c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( 11350fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1136c66ac9dbSNicholas Bellinger { 1137c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo; 1138c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1139c66ac9dbSNicholas Bellinger unsigned char buf[384]; 1140c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1141c66ac9dbSNicholas Bellinger ssize_t len = 0; 1142d2843c17SAndy Grover int reg_count = 0; 1143c66ac9dbSNicholas Bellinger 1144c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 1145c66ac9dbSNicholas Bellinger 11460fd97ccfSChristoph Hellwig spin_lock(&dev->t10_pr.registration_lock); 11470fd97ccfSChristoph Hellwig list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, 1148c66ac9dbSNicholas Bellinger pr_reg_list) { 1149c66ac9dbSNicholas Bellinger 1150c66ac9dbSNicholas Bellinger memset(buf, 0, 384); 1151c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1152c66ac9dbSNicholas Bellinger tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1153d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, 1154c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 1155c66ac9dbSNicholas Bellinger sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 1156c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), 1157d2843c17SAndy Grover pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, 1158c66ac9dbSNicholas Bellinger pr_reg->pr_res_generation); 1159c66ac9dbSNicholas Bellinger 11606708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1161c66ac9dbSNicholas Bellinger break; 1162c66ac9dbSNicholas Bellinger 1163c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1164c66ac9dbSNicholas Bellinger reg_count++; 1165c66ac9dbSNicholas Bellinger } 11660fd97ccfSChristoph Hellwig spin_unlock(&dev->t10_pr.registration_lock); 1167c66ac9dbSNicholas Bellinger 11686708bb27SAndy Grover if (!reg_count) 1169c66ac9dbSNicholas Bellinger len += sprintf(page+len, "None\n"); 1170c66ac9dbSNicholas Bellinger 1171c66ac9dbSNicholas Bellinger return len; 1172c66ac9dbSNicholas Bellinger } 1173c66ac9dbSNicholas Bellinger 1174c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); 1175c66ac9dbSNicholas Bellinger 1176c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_type( 11770fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1178c66ac9dbSNicholas Bellinger { 1179c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1180c66ac9dbSNicholas Bellinger ssize_t len = 0; 1181c66ac9dbSNicholas Bellinger 1182c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1183c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1184d977f437SChristoph Hellwig if (pr_reg) { 1185c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1186c66ac9dbSNicholas Bellinger core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1187d977f437SChristoph Hellwig } else { 1188d977f437SChristoph Hellwig len = sprintf(page, "No SPC-3 Reservation holder\n"); 1189d977f437SChristoph Hellwig } 1190c66ac9dbSNicholas Bellinger 1191d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1192c66ac9dbSNicholas Bellinger return len; 1193c66ac9dbSNicholas Bellinger } 1194c66ac9dbSNicholas Bellinger 1195c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_type); 1196c66ac9dbSNicholas Bellinger 1197c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_type( 11980fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1199c66ac9dbSNicholas Bellinger { 1200d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1201d977f437SChristoph Hellwig return sprintf(page, "SPC_PASSTHROUGH\n"); 1202d977f437SChristoph Hellwig else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1203d977f437SChristoph Hellwig return sprintf(page, "SPC2_RESERVATIONS\n"); 1204d977f437SChristoph Hellwig else 1205d977f437SChristoph Hellwig return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1206c66ac9dbSNicholas Bellinger } 1207c66ac9dbSNicholas Bellinger 1208c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_type); 1209c66ac9dbSNicholas Bellinger 1210c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( 12110fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1212c66ac9dbSNicholas Bellinger { 1213d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1214c66ac9dbSNicholas Bellinger return 0; 1215c66ac9dbSNicholas Bellinger 1216c66ac9dbSNicholas Bellinger return sprintf(page, "APTPL Bit Status: %s\n", 12170fd97ccfSChristoph Hellwig (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1218c66ac9dbSNicholas Bellinger } 1219c66ac9dbSNicholas Bellinger 1220c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_aptpl_active); 1221c66ac9dbSNicholas Bellinger 1222c66ac9dbSNicholas Bellinger /* 1223c66ac9dbSNicholas Bellinger * res_aptpl_metadata 1224c66ac9dbSNicholas Bellinger */ 1225c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( 12260fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1227c66ac9dbSNicholas Bellinger { 1228d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1229c66ac9dbSNicholas Bellinger return 0; 1230c66ac9dbSNicholas Bellinger 1231c66ac9dbSNicholas Bellinger return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1232c66ac9dbSNicholas Bellinger } 1233c66ac9dbSNicholas Bellinger 1234c66ac9dbSNicholas Bellinger enum { 1235c66ac9dbSNicholas Bellinger Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1236c66ac9dbSNicholas Bellinger Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1237c66ac9dbSNicholas Bellinger Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1238c66ac9dbSNicholas Bellinger Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1239c66ac9dbSNicholas Bellinger }; 1240c66ac9dbSNicholas Bellinger 1241c66ac9dbSNicholas Bellinger static match_table_t tokens = { 1242c66ac9dbSNicholas Bellinger {Opt_initiator_fabric, "initiator_fabric=%s"}, 1243c66ac9dbSNicholas Bellinger {Opt_initiator_node, "initiator_node=%s"}, 1244c66ac9dbSNicholas Bellinger {Opt_initiator_sid, "initiator_sid=%s"}, 1245c66ac9dbSNicholas Bellinger {Opt_sa_res_key, "sa_res_key=%s"}, 1246c66ac9dbSNicholas Bellinger {Opt_res_holder, "res_holder=%d"}, 1247c66ac9dbSNicholas Bellinger {Opt_res_type, "res_type=%d"}, 1248c66ac9dbSNicholas Bellinger {Opt_res_scope, "res_scope=%d"}, 1249c66ac9dbSNicholas Bellinger {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1250c66ac9dbSNicholas Bellinger {Opt_mapped_lun, "mapped_lun=%d"}, 1251c66ac9dbSNicholas Bellinger {Opt_target_fabric, "target_fabric=%s"}, 1252c66ac9dbSNicholas Bellinger {Opt_target_node, "target_node=%s"}, 1253c66ac9dbSNicholas Bellinger {Opt_tpgt, "tpgt=%d"}, 1254c66ac9dbSNicholas Bellinger {Opt_port_rtpi, "port_rtpi=%d"}, 1255c66ac9dbSNicholas Bellinger {Opt_target_lun, "target_lun=%d"}, 1256c66ac9dbSNicholas Bellinger {Opt_err, NULL} 1257c66ac9dbSNicholas Bellinger }; 1258c66ac9dbSNicholas Bellinger 1259c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( 12600fd97ccfSChristoph Hellwig struct se_device *dev, 1261c66ac9dbSNicholas Bellinger const char *page, 1262c66ac9dbSNicholas Bellinger size_t count) 1263c66ac9dbSNicholas Bellinger { 12646d180253SJesper Juhl unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 12656d180253SJesper Juhl unsigned char *t_fabric = NULL, *t_port = NULL; 12668d213559SJoern Engel char *orig, *ptr, *opts; 1267c66ac9dbSNicholas Bellinger substring_t args[MAX_OPT_ARGS]; 1268c66ac9dbSNicholas Bellinger unsigned long long tmp_ll; 1269c66ac9dbSNicholas Bellinger u64 sa_res_key = 0; 1270c66ac9dbSNicholas Bellinger u32 mapped_lun = 0, target_lun = 0; 1271c66ac9dbSNicholas Bellinger int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 1272c66ac9dbSNicholas Bellinger u16 port_rpti = 0, tpgt = 0; 1273c66ac9dbSNicholas Bellinger u8 type = 0, scope; 1274c66ac9dbSNicholas Bellinger 1275d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1276d977f437SChristoph Hellwig return 0; 1277d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1278c66ac9dbSNicholas Bellinger return 0; 1279c66ac9dbSNicholas Bellinger 12800fd97ccfSChristoph Hellwig if (dev->export_count) { 12816708bb27SAndy Grover pr_debug("Unable to process APTPL metadata while" 1282c66ac9dbSNicholas Bellinger " active fabric exports exist\n"); 1283c66ac9dbSNicholas Bellinger return -EINVAL; 1284c66ac9dbSNicholas Bellinger } 1285c66ac9dbSNicholas Bellinger 1286c66ac9dbSNicholas Bellinger opts = kstrdup(page, GFP_KERNEL); 1287c66ac9dbSNicholas Bellinger if (!opts) 1288c66ac9dbSNicholas Bellinger return -ENOMEM; 1289c66ac9dbSNicholas Bellinger 1290c66ac9dbSNicholas Bellinger orig = opts; 129190c161b6SSebastian Andrzej Siewior while ((ptr = strsep(&opts, ",\n")) != NULL) { 1292c66ac9dbSNicholas Bellinger if (!*ptr) 1293c66ac9dbSNicholas Bellinger continue; 1294c66ac9dbSNicholas Bellinger 1295c66ac9dbSNicholas Bellinger token = match_token(ptr, tokens, args); 1296c66ac9dbSNicholas Bellinger switch (token) { 1297c66ac9dbSNicholas Bellinger case Opt_initiator_fabric: 12988d213559SJoern Engel i_fabric = match_strdup(args); 12996d180253SJesper Juhl if (!i_fabric) { 13006d180253SJesper Juhl ret = -ENOMEM; 13016d180253SJesper Juhl goto out; 13026d180253SJesper Juhl } 1303c66ac9dbSNicholas Bellinger break; 1304c66ac9dbSNicholas Bellinger case Opt_initiator_node: 13058d213559SJoern Engel i_port = match_strdup(args); 13066d180253SJesper Juhl if (!i_port) { 13076d180253SJesper Juhl ret = -ENOMEM; 13086d180253SJesper Juhl goto out; 13096d180253SJesper Juhl } 131060d645a4SDan Carpenter if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 13116708bb27SAndy Grover pr_err("APTPL metadata initiator_node=" 1312c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 1313c66ac9dbSNicholas Bellinger PR_APTPL_MAX_IPORT_LEN); 1314c66ac9dbSNicholas Bellinger ret = -EINVAL; 1315c66ac9dbSNicholas Bellinger break; 1316c66ac9dbSNicholas Bellinger } 1317c66ac9dbSNicholas Bellinger break; 1318c66ac9dbSNicholas Bellinger case Opt_initiator_sid: 13198d213559SJoern Engel isid = match_strdup(args); 13206d180253SJesper Juhl if (!isid) { 13216d180253SJesper Juhl ret = -ENOMEM; 13226d180253SJesper Juhl goto out; 13236d180253SJesper Juhl } 132460d645a4SDan Carpenter if (strlen(isid) >= PR_REG_ISID_LEN) { 13256708bb27SAndy Grover pr_err("APTPL metadata initiator_isid" 1326c66ac9dbSNicholas Bellinger "= exceeds PR_REG_ISID_LEN: %d\n", 1327c66ac9dbSNicholas Bellinger PR_REG_ISID_LEN); 1328c66ac9dbSNicholas Bellinger ret = -EINVAL; 1329c66ac9dbSNicholas Bellinger break; 1330c66ac9dbSNicholas Bellinger } 1331c66ac9dbSNicholas Bellinger break; 1332c66ac9dbSNicholas Bellinger case Opt_sa_res_key: 13338d213559SJoern Engel ret = kstrtoull(args->from, 0, &tmp_ll); 1334c66ac9dbSNicholas Bellinger if (ret < 0) { 13358d213559SJoern Engel pr_err("kstrtoull() failed for sa_res_key=\n"); 1336c66ac9dbSNicholas Bellinger goto out; 1337c66ac9dbSNicholas Bellinger } 1338c66ac9dbSNicholas Bellinger sa_res_key = (u64)tmp_ll; 1339c66ac9dbSNicholas Bellinger break; 1340c66ac9dbSNicholas Bellinger /* 1341c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Reservation 1342c66ac9dbSNicholas Bellinger */ 1343c66ac9dbSNicholas Bellinger case Opt_res_holder: 1344c66ac9dbSNicholas Bellinger match_int(args, &arg); 1345c66ac9dbSNicholas Bellinger res_holder = arg; 1346c66ac9dbSNicholas Bellinger break; 1347c66ac9dbSNicholas Bellinger case Opt_res_type: 1348c66ac9dbSNicholas Bellinger match_int(args, &arg); 1349c66ac9dbSNicholas Bellinger type = (u8)arg; 1350c66ac9dbSNicholas Bellinger break; 1351c66ac9dbSNicholas Bellinger case Opt_res_scope: 1352c66ac9dbSNicholas Bellinger match_int(args, &arg); 1353c66ac9dbSNicholas Bellinger scope = (u8)arg; 1354c66ac9dbSNicholas Bellinger break; 1355c66ac9dbSNicholas Bellinger case Opt_res_all_tg_pt: 1356c66ac9dbSNicholas Bellinger match_int(args, &arg); 1357c66ac9dbSNicholas Bellinger all_tg_pt = (int)arg; 1358c66ac9dbSNicholas Bellinger break; 1359c66ac9dbSNicholas Bellinger case Opt_mapped_lun: 1360c66ac9dbSNicholas Bellinger match_int(args, &arg); 1361c66ac9dbSNicholas Bellinger mapped_lun = (u32)arg; 1362c66ac9dbSNicholas Bellinger break; 1363c66ac9dbSNicholas Bellinger /* 1364c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Target Port 1365c66ac9dbSNicholas Bellinger */ 1366c66ac9dbSNicholas Bellinger case Opt_target_fabric: 13678d213559SJoern Engel t_fabric = match_strdup(args); 13686d180253SJesper Juhl if (!t_fabric) { 13696d180253SJesper Juhl ret = -ENOMEM; 13706d180253SJesper Juhl goto out; 13716d180253SJesper Juhl } 1372c66ac9dbSNicholas Bellinger break; 1373c66ac9dbSNicholas Bellinger case Opt_target_node: 13748d213559SJoern Engel t_port = match_strdup(args); 13756d180253SJesper Juhl if (!t_port) { 13766d180253SJesper Juhl ret = -ENOMEM; 13776d180253SJesper Juhl goto out; 13786d180253SJesper Juhl } 137960d645a4SDan Carpenter if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 13806708bb27SAndy Grover pr_err("APTPL metadata target_node=" 1381c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 1382c66ac9dbSNicholas Bellinger PR_APTPL_MAX_TPORT_LEN); 1383c66ac9dbSNicholas Bellinger ret = -EINVAL; 1384c66ac9dbSNicholas Bellinger break; 1385c66ac9dbSNicholas Bellinger } 1386c66ac9dbSNicholas Bellinger break; 1387c66ac9dbSNicholas Bellinger case Opt_tpgt: 1388c66ac9dbSNicholas Bellinger match_int(args, &arg); 1389c66ac9dbSNicholas Bellinger tpgt = (u16)arg; 1390c66ac9dbSNicholas Bellinger break; 1391c66ac9dbSNicholas Bellinger case Opt_port_rtpi: 1392c66ac9dbSNicholas Bellinger match_int(args, &arg); 1393c66ac9dbSNicholas Bellinger port_rpti = (u16)arg; 1394c66ac9dbSNicholas Bellinger break; 1395c66ac9dbSNicholas Bellinger case Opt_target_lun: 1396c66ac9dbSNicholas Bellinger match_int(args, &arg); 1397c66ac9dbSNicholas Bellinger target_lun = (u32)arg; 1398c66ac9dbSNicholas Bellinger break; 1399c66ac9dbSNicholas Bellinger default: 1400c66ac9dbSNicholas Bellinger break; 1401c66ac9dbSNicholas Bellinger } 1402c66ac9dbSNicholas Bellinger } 1403c66ac9dbSNicholas Bellinger 14046708bb27SAndy Grover if (!i_port || !t_port || !sa_res_key) { 14056708bb27SAndy Grover pr_err("Illegal parameters for APTPL registration\n"); 1406c66ac9dbSNicholas Bellinger ret = -EINVAL; 1407c66ac9dbSNicholas Bellinger goto out; 1408c66ac9dbSNicholas Bellinger } 1409c66ac9dbSNicholas Bellinger 1410c66ac9dbSNicholas Bellinger if (res_holder && !(type)) { 14116708bb27SAndy Grover pr_err("Illegal PR type: 0x%02x for reservation" 1412c66ac9dbSNicholas Bellinger " holder\n", type); 1413c66ac9dbSNicholas Bellinger ret = -EINVAL; 1414c66ac9dbSNicholas Bellinger goto out; 1415c66ac9dbSNicholas Bellinger } 1416c66ac9dbSNicholas Bellinger 14170fd97ccfSChristoph Hellwig ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, 1418c66ac9dbSNicholas Bellinger i_port, isid, mapped_lun, t_port, tpgt, target_lun, 1419c66ac9dbSNicholas Bellinger res_holder, all_tg_pt, type); 1420c66ac9dbSNicholas Bellinger out: 14216d180253SJesper Juhl kfree(i_fabric); 14226d180253SJesper Juhl kfree(i_port); 14236d180253SJesper Juhl kfree(isid); 14246d180253SJesper Juhl kfree(t_fabric); 14256d180253SJesper Juhl kfree(t_port); 1426c66ac9dbSNicholas Bellinger kfree(orig); 1427c66ac9dbSNicholas Bellinger return (ret == 0) ? count : ret; 1428c66ac9dbSNicholas Bellinger } 1429c66ac9dbSNicholas Bellinger 1430c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); 1431c66ac9dbSNicholas Bellinger 14320fd97ccfSChristoph Hellwig CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); 1433c66ac9dbSNicholas Bellinger 1434c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_pr_attrs[] = { 1435c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_holder.attr, 1436c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_all_tgt_pts.attr, 1437c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_generation.attr, 1438c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_holder_tg_port.attr, 1439c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_registered_i_pts.attr, 1440c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_type.attr, 1441c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_type.attr, 1442c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_active.attr, 1443c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_metadata.attr, 1444c66ac9dbSNicholas Bellinger NULL, 1445c66ac9dbSNicholas Bellinger }; 1446c66ac9dbSNicholas Bellinger 1447c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_pr_ops = { 1448c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_pr_attr_show, 1449c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_pr_attr_store, 1450c66ac9dbSNicholas Bellinger }; 1451c66ac9dbSNicholas Bellinger 1452c66ac9dbSNicholas Bellinger static struct config_item_type target_core_dev_pr_cit = { 1453c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_dev_pr_ops, 1454c66ac9dbSNicholas Bellinger .ct_attrs = target_core_dev_pr_attrs, 1455c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 1456c66ac9dbSNicholas Bellinger }; 1457c66ac9dbSNicholas Bellinger 1458c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_dev_pr_cit */ 1459c66ac9dbSNicholas Bellinger 1460c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_dev_cit */ 1461c66ac9dbSNicholas Bellinger 1462c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_info(void *p, char *page) 1463c66ac9dbSNicholas Bellinger { 14640fd97ccfSChristoph Hellwig struct se_device *dev = p; 14650fd97ccfSChristoph Hellwig struct se_subsystem_api *t = dev->transport; 1466c66ac9dbSNicholas Bellinger int bl = 0; 1467c66ac9dbSNicholas Bellinger ssize_t read_bytes = 0; 1468c66ac9dbSNicholas Bellinger 14690fd97ccfSChristoph Hellwig transport_dump_dev_state(dev, page, &bl); 1470c66ac9dbSNicholas Bellinger read_bytes += bl; 14710fd97ccfSChristoph Hellwig read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); 1472c66ac9dbSNicholas Bellinger return read_bytes; 1473c66ac9dbSNicholas Bellinger } 1474c66ac9dbSNicholas Bellinger 1475c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_info = { 1476c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1477c66ac9dbSNicholas Bellinger .ca_name = "info", 1478c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO }, 1479c66ac9dbSNicholas Bellinger .show = target_core_show_dev_info, 1480c66ac9dbSNicholas Bellinger .store = NULL, 1481c66ac9dbSNicholas Bellinger }; 1482c66ac9dbSNicholas Bellinger 1483c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_control( 1484c66ac9dbSNicholas Bellinger void *p, 1485c66ac9dbSNicholas Bellinger const char *page, 1486c66ac9dbSNicholas Bellinger size_t count) 1487c66ac9dbSNicholas Bellinger { 14880fd97ccfSChristoph Hellwig struct se_device *dev = p; 14890fd97ccfSChristoph Hellwig struct se_subsystem_api *t = dev->transport; 1490c66ac9dbSNicholas Bellinger 14910fd97ccfSChristoph Hellwig return t->set_configfs_dev_params(dev, page, count); 1492c66ac9dbSNicholas Bellinger } 1493c66ac9dbSNicholas Bellinger 1494c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_control = { 1495c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1496c66ac9dbSNicholas Bellinger .ca_name = "control", 1497c66ac9dbSNicholas Bellinger .ca_mode = S_IWUSR }, 1498c66ac9dbSNicholas Bellinger .show = NULL, 1499c66ac9dbSNicholas Bellinger .store = target_core_store_dev_control, 1500c66ac9dbSNicholas Bellinger }; 1501c66ac9dbSNicholas Bellinger 1502c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_alias(void *p, char *page) 1503c66ac9dbSNicholas Bellinger { 15040fd97ccfSChristoph Hellwig struct se_device *dev = p; 1505c66ac9dbSNicholas Bellinger 15060fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_ALIAS)) 1507c66ac9dbSNicholas Bellinger return 0; 1508c66ac9dbSNicholas Bellinger 15090fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); 1510c66ac9dbSNicholas Bellinger } 1511c66ac9dbSNicholas Bellinger 1512c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_alias( 1513c66ac9dbSNicholas Bellinger void *p, 1514c66ac9dbSNicholas Bellinger const char *page, 1515c66ac9dbSNicholas Bellinger size_t count) 1516c66ac9dbSNicholas Bellinger { 15170fd97ccfSChristoph Hellwig struct se_device *dev = p; 15180fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1519c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1520c66ac9dbSNicholas Bellinger 1521c66ac9dbSNicholas Bellinger if (count > (SE_DEV_ALIAS_LEN-1)) { 15226708bb27SAndy Grover pr_err("alias count: %d exceeds" 1523c66ac9dbSNicholas Bellinger " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 1524c66ac9dbSNicholas Bellinger SE_DEV_ALIAS_LEN-1); 1525c66ac9dbSNicholas Bellinger return -EINVAL; 1526c66ac9dbSNicholas Bellinger } 1527c66ac9dbSNicholas Bellinger 15280fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); 15293011684cSDan Carpenter if (!read_bytes) 15303011684cSDan Carpenter return -EINVAL; 15310fd97ccfSChristoph Hellwig if (dev->dev_alias[read_bytes - 1] == '\n') 15320fd97ccfSChristoph Hellwig dev->dev_alias[read_bytes - 1] = '\0'; 15330877eafdSSebastian Andrzej Siewior 15340fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_ALIAS; 15353011684cSDan Carpenter 15366708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 1537c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 15380fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 15390fd97ccfSChristoph Hellwig dev->dev_alias); 1540c66ac9dbSNicholas Bellinger 1541c66ac9dbSNicholas Bellinger return read_bytes; 1542c66ac9dbSNicholas Bellinger } 1543c66ac9dbSNicholas Bellinger 1544c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alias = { 1545c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1546c66ac9dbSNicholas Bellinger .ca_name = "alias", 1547c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1548c66ac9dbSNicholas Bellinger .show = target_core_show_dev_alias, 1549c66ac9dbSNicholas Bellinger .store = target_core_store_dev_alias, 1550c66ac9dbSNicholas Bellinger }; 1551c66ac9dbSNicholas Bellinger 1552c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_udev_path(void *p, char *page) 1553c66ac9dbSNicholas Bellinger { 15540fd97ccfSChristoph Hellwig struct se_device *dev = p; 1555c66ac9dbSNicholas Bellinger 15560fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_UDEV_PATH)) 1557c66ac9dbSNicholas Bellinger return 0; 1558c66ac9dbSNicholas Bellinger 15590fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); 1560c66ac9dbSNicholas Bellinger } 1561c66ac9dbSNicholas Bellinger 1562c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_udev_path( 1563c66ac9dbSNicholas Bellinger void *p, 1564c66ac9dbSNicholas Bellinger const char *page, 1565c66ac9dbSNicholas Bellinger size_t count) 1566c66ac9dbSNicholas Bellinger { 15670fd97ccfSChristoph Hellwig struct se_device *dev = p; 15680fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1569c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1570c66ac9dbSNicholas Bellinger 1571c66ac9dbSNicholas Bellinger if (count > (SE_UDEV_PATH_LEN-1)) { 15726708bb27SAndy Grover pr_err("udev_path count: %d exceeds" 1573c66ac9dbSNicholas Bellinger " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 1574c66ac9dbSNicholas Bellinger SE_UDEV_PATH_LEN-1); 1575c66ac9dbSNicholas Bellinger return -EINVAL; 1576c66ac9dbSNicholas Bellinger } 1577c66ac9dbSNicholas Bellinger 15780fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, 1579c66ac9dbSNicholas Bellinger "%s", page); 15803011684cSDan Carpenter if (!read_bytes) 15813011684cSDan Carpenter return -EINVAL; 15820fd97ccfSChristoph Hellwig if (dev->udev_path[read_bytes - 1] == '\n') 15830fd97ccfSChristoph Hellwig dev->udev_path[read_bytes - 1] = '\0'; 15840877eafdSSebastian Andrzej Siewior 15850fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_UDEV_PATH; 15863011684cSDan Carpenter 15876708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 1588c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 15890fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 15900fd97ccfSChristoph Hellwig dev->udev_path); 1591c66ac9dbSNicholas Bellinger 1592c66ac9dbSNicholas Bellinger return read_bytes; 1593c66ac9dbSNicholas Bellinger } 1594c66ac9dbSNicholas Bellinger 1595c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { 1596c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1597c66ac9dbSNicholas Bellinger .ca_name = "udev_path", 1598c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1599c66ac9dbSNicholas Bellinger .show = target_core_show_dev_udev_path, 1600c66ac9dbSNicholas Bellinger .store = target_core_store_dev_udev_path, 1601c66ac9dbSNicholas Bellinger }; 1602c66ac9dbSNicholas Bellinger 160364146db7SAndy Grover static ssize_t target_core_show_dev_enable(void *p, char *page) 160464146db7SAndy Grover { 160564146db7SAndy Grover struct se_device *dev = p; 160664146db7SAndy Grover 160764146db7SAndy Grover return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); 160864146db7SAndy Grover } 160964146db7SAndy Grover 1610c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_enable( 1611c66ac9dbSNicholas Bellinger void *p, 1612c66ac9dbSNicholas Bellinger const char *page, 1613c66ac9dbSNicholas Bellinger size_t count) 1614c66ac9dbSNicholas Bellinger { 16150fd97ccfSChristoph Hellwig struct se_device *dev = p; 1616c66ac9dbSNicholas Bellinger char *ptr; 16170fd97ccfSChristoph Hellwig int ret; 1618c66ac9dbSNicholas Bellinger 1619c66ac9dbSNicholas Bellinger ptr = strstr(page, "1"); 16206708bb27SAndy Grover if (!ptr) { 16216708bb27SAndy Grover pr_err("For dev_enable ops, only valid value" 1622c66ac9dbSNicholas Bellinger " is \"1\"\n"); 1623c66ac9dbSNicholas Bellinger return -EINVAL; 1624c66ac9dbSNicholas Bellinger } 1625c66ac9dbSNicholas Bellinger 16260fd97ccfSChristoph Hellwig ret = target_configure_device(dev); 16270fd97ccfSChristoph Hellwig if (ret) 16280fd97ccfSChristoph Hellwig return ret; 1629c66ac9dbSNicholas Bellinger return count; 1630c66ac9dbSNicholas Bellinger } 1631c66ac9dbSNicholas Bellinger 1632c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_enable = { 1633c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1634c66ac9dbSNicholas Bellinger .ca_name = "enable", 163564146db7SAndy Grover .ca_mode = S_IRUGO | S_IWUSR }, 163664146db7SAndy Grover .show = target_core_show_dev_enable, 1637c66ac9dbSNicholas Bellinger .store = target_core_store_dev_enable, 1638c66ac9dbSNicholas Bellinger }; 1639c66ac9dbSNicholas Bellinger 1640c66ac9dbSNicholas Bellinger static ssize_t target_core_show_alua_lu_gp(void *p, char *page) 1641c66ac9dbSNicholas Bellinger { 16420fd97ccfSChristoph Hellwig struct se_device *dev = p; 1643c66ac9dbSNicholas Bellinger struct config_item *lu_ci; 1644c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 1645c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1646c66ac9dbSNicholas Bellinger ssize_t len = 0; 1647c66ac9dbSNicholas Bellinger 1648c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 1649c87fbd56SChristoph Hellwig if (!lu_gp_mem) 1650c87fbd56SChristoph Hellwig return 0; 1651c66ac9dbSNicholas Bellinger 1652c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1653c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 16546708bb27SAndy Grover if (lu_gp) { 1655c66ac9dbSNicholas Bellinger lu_ci = &lu_gp->lu_gp_group.cg_item; 1656c66ac9dbSNicholas Bellinger len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 1657c66ac9dbSNicholas Bellinger config_item_name(lu_ci), lu_gp->lu_gp_id); 1658c66ac9dbSNicholas Bellinger } 1659c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1660c66ac9dbSNicholas Bellinger 1661c66ac9dbSNicholas Bellinger return len; 1662c66ac9dbSNicholas Bellinger } 1663c66ac9dbSNicholas Bellinger 1664c66ac9dbSNicholas Bellinger static ssize_t target_core_store_alua_lu_gp( 1665c66ac9dbSNicholas Bellinger void *p, 1666c66ac9dbSNicholas Bellinger const char *page, 1667c66ac9dbSNicholas Bellinger size_t count) 1668c66ac9dbSNicholas Bellinger { 16690fd97ccfSChristoph Hellwig struct se_device *dev = p; 16700fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1671c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 1672c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1673c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 1674c66ac9dbSNicholas Bellinger int move = 0; 1675c66ac9dbSNicholas Bellinger 1676c87fbd56SChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 1677c87fbd56SChristoph Hellwig if (!lu_gp_mem) 1678c87fbd56SChristoph Hellwig return 0; 1679c87fbd56SChristoph Hellwig 1680c66ac9dbSNicholas Bellinger if (count > LU_GROUP_NAME_BUF) { 16816708bb27SAndy Grover pr_err("ALUA LU Group Alias too large!\n"); 1682c66ac9dbSNicholas Bellinger return -EINVAL; 1683c66ac9dbSNicholas Bellinger } 1684c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 1685c66ac9dbSNicholas Bellinger memcpy(buf, page, count); 1686c66ac9dbSNicholas Bellinger /* 1687c66ac9dbSNicholas Bellinger * Any ALUA logical unit alias besides "NULL" means we will be 1688c66ac9dbSNicholas Bellinger * making a new group association. 1689c66ac9dbSNicholas Bellinger */ 1690c66ac9dbSNicholas Bellinger if (strcmp(strstrip(buf), "NULL")) { 1691c66ac9dbSNicholas Bellinger /* 1692c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name() will increment reference to 1693c66ac9dbSNicholas Bellinger * struct t10_alua_lu_gp. This reference is released with 1694c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name below(). 1695c66ac9dbSNicholas Bellinger */ 1696c66ac9dbSNicholas Bellinger lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 16976708bb27SAndy Grover if (!lu_gp_new) 1698c66ac9dbSNicholas Bellinger return -ENODEV; 1699c66ac9dbSNicholas Bellinger } 1700c66ac9dbSNicholas Bellinger 1701c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1702c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 17036708bb27SAndy Grover if (lu_gp) { 1704c66ac9dbSNicholas Bellinger /* 1705c66ac9dbSNicholas Bellinger * Clearing an existing lu_gp association, and replacing 1706c66ac9dbSNicholas Bellinger * with NULL 1707c66ac9dbSNicholas Bellinger */ 17086708bb27SAndy Grover if (!lu_gp_new) { 17096708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 1710c66ac9dbSNicholas Bellinger " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 1711c66ac9dbSNicholas Bellinger " %hu\n", 1712c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 17130fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 1714c66ac9dbSNicholas Bellinger config_item_name(&lu_gp->lu_gp_group.cg_item), 1715c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 1716c66ac9dbSNicholas Bellinger 1717c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1718c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1719c66ac9dbSNicholas Bellinger 1720c66ac9dbSNicholas Bellinger return count; 1721c66ac9dbSNicholas Bellinger } 1722c66ac9dbSNicholas Bellinger /* 1723c66ac9dbSNicholas Bellinger * Removing existing association of lu_gp_mem with lu_gp 1724c66ac9dbSNicholas Bellinger */ 1725c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1726c66ac9dbSNicholas Bellinger move = 1; 1727c66ac9dbSNicholas Bellinger } 1728c66ac9dbSNicholas Bellinger /* 1729c66ac9dbSNicholas Bellinger * Associate lu_gp_mem with lu_gp_new. 1730c66ac9dbSNicholas Bellinger */ 1731c66ac9dbSNicholas Bellinger __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 1732c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1733c66ac9dbSNicholas Bellinger 17346708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 1735c66ac9dbSNicholas Bellinger " core/alua/lu_gps/%s, ID: %hu\n", 1736c66ac9dbSNicholas Bellinger (move) ? "Moving" : "Adding", 1737c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 17380fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 1739c66ac9dbSNicholas Bellinger config_item_name(&lu_gp_new->lu_gp_group.cg_item), 1740c66ac9dbSNicholas Bellinger lu_gp_new->lu_gp_id); 1741c66ac9dbSNicholas Bellinger 1742c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 1743c66ac9dbSNicholas Bellinger return count; 1744c66ac9dbSNicholas Bellinger } 1745c66ac9dbSNicholas Bellinger 1746c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { 1747c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1748c66ac9dbSNicholas Bellinger .ca_name = "alua_lu_gp", 1749c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1750c66ac9dbSNicholas Bellinger .show = target_core_show_alua_lu_gp, 1751c66ac9dbSNicholas Bellinger .store = target_core_store_alua_lu_gp, 1752c66ac9dbSNicholas Bellinger }; 1753c66ac9dbSNicholas Bellinger 1754229d4f11SHannes Reinecke static ssize_t target_core_show_dev_lba_map(void *p, char *page) 1755229d4f11SHannes Reinecke { 1756229d4f11SHannes Reinecke struct se_device *dev = p; 1757229d4f11SHannes Reinecke struct t10_alua_lba_map *map; 1758229d4f11SHannes Reinecke struct t10_alua_lba_map_member *mem; 1759229d4f11SHannes Reinecke char *b = page; 1760229d4f11SHannes Reinecke int bl = 0; 1761229d4f11SHannes Reinecke char state; 1762229d4f11SHannes Reinecke 1763229d4f11SHannes Reinecke spin_lock(&dev->t10_alua.lba_map_lock); 1764229d4f11SHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 1765229d4f11SHannes Reinecke bl += sprintf(b + bl, "%u %u\n", 1766229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_size, 1767229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_multiplier); 1768229d4f11SHannes Reinecke list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { 1769229d4f11SHannes Reinecke bl += sprintf(b + bl, "%llu %llu", 1770229d4f11SHannes Reinecke map->lba_map_first_lba, map->lba_map_last_lba); 1771229d4f11SHannes Reinecke list_for_each_entry(mem, &map->lba_map_mem_list, 1772229d4f11SHannes Reinecke lba_map_mem_list) { 1773229d4f11SHannes Reinecke switch (mem->lba_map_mem_alua_state) { 1774229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: 1775229d4f11SHannes Reinecke state = 'O'; 1776229d4f11SHannes Reinecke break; 1777229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: 1778229d4f11SHannes Reinecke state = 'A'; 1779229d4f11SHannes Reinecke break; 1780229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_STANDBY: 1781229d4f11SHannes Reinecke state = 'S'; 1782229d4f11SHannes Reinecke break; 1783229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_UNAVAILABLE: 1784229d4f11SHannes Reinecke state = 'U'; 1785229d4f11SHannes Reinecke break; 1786229d4f11SHannes Reinecke default: 1787229d4f11SHannes Reinecke state = '.'; 1788229d4f11SHannes Reinecke break; 1789229d4f11SHannes Reinecke } 1790229d4f11SHannes Reinecke bl += sprintf(b + bl, " %d:%c", 1791229d4f11SHannes Reinecke mem->lba_map_mem_alua_pg_id, state); 1792229d4f11SHannes Reinecke } 1793229d4f11SHannes Reinecke bl += sprintf(b + bl, "\n"); 1794229d4f11SHannes Reinecke } 1795229d4f11SHannes Reinecke spin_unlock(&dev->t10_alua.lba_map_lock); 1796229d4f11SHannes Reinecke return bl; 1797229d4f11SHannes Reinecke } 1798229d4f11SHannes Reinecke 1799229d4f11SHannes Reinecke static ssize_t target_core_store_dev_lba_map( 1800229d4f11SHannes Reinecke void *p, 1801229d4f11SHannes Reinecke const char *page, 1802229d4f11SHannes Reinecke size_t count) 1803229d4f11SHannes Reinecke { 1804229d4f11SHannes Reinecke struct se_device *dev = p; 1805229d4f11SHannes Reinecke struct t10_alua_lba_map *lba_map = NULL; 1806229d4f11SHannes Reinecke struct list_head lba_list; 1807229d4f11SHannes Reinecke char *map_entries, *ptr; 1808229d4f11SHannes Reinecke char state; 1809229d4f11SHannes Reinecke int pg_num = -1, pg; 1810229d4f11SHannes Reinecke int ret = 0, num = 0, pg_id, alua_state; 1811229d4f11SHannes Reinecke unsigned long start_lba = -1, end_lba = -1; 1812229d4f11SHannes Reinecke unsigned long segment_size = -1, segment_mult = -1; 1813229d4f11SHannes Reinecke 1814229d4f11SHannes Reinecke map_entries = kstrdup(page, GFP_KERNEL); 1815229d4f11SHannes Reinecke if (!map_entries) 1816229d4f11SHannes Reinecke return -ENOMEM; 1817229d4f11SHannes Reinecke 1818229d4f11SHannes Reinecke INIT_LIST_HEAD(&lba_list); 1819229d4f11SHannes Reinecke while ((ptr = strsep(&map_entries, "\n")) != NULL) { 1820229d4f11SHannes Reinecke if (!*ptr) 1821229d4f11SHannes Reinecke continue; 1822229d4f11SHannes Reinecke 1823229d4f11SHannes Reinecke if (num == 0) { 1824229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu\n", 1825229d4f11SHannes Reinecke &segment_size, &segment_mult) != 2) { 1826229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 1827229d4f11SHannes Reinecke ret = -EINVAL; 1828229d4f11SHannes Reinecke break; 1829229d4f11SHannes Reinecke } 1830229d4f11SHannes Reinecke num++; 1831229d4f11SHannes Reinecke continue; 1832229d4f11SHannes Reinecke } 1833229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { 1834229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 1835229d4f11SHannes Reinecke ret = -EINVAL; 1836229d4f11SHannes Reinecke break; 1837229d4f11SHannes Reinecke } 1838229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1839229d4f11SHannes Reinecke if (!ptr) { 1840229d4f11SHannes Reinecke pr_err("Invalid line %d, missing end lba\n", num); 1841229d4f11SHannes Reinecke ret = -EINVAL; 1842229d4f11SHannes Reinecke break; 1843229d4f11SHannes Reinecke } 1844229d4f11SHannes Reinecke ptr++; 1845229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1846229d4f11SHannes Reinecke if (!ptr) { 1847229d4f11SHannes Reinecke pr_err("Invalid line %d, missing state definitions\n", 1848229d4f11SHannes Reinecke num); 1849229d4f11SHannes Reinecke ret = -EINVAL; 1850229d4f11SHannes Reinecke break; 1851229d4f11SHannes Reinecke } 1852229d4f11SHannes Reinecke ptr++; 1853229d4f11SHannes Reinecke lba_map = core_alua_allocate_lba_map(&lba_list, 1854229d4f11SHannes Reinecke start_lba, end_lba); 1855229d4f11SHannes Reinecke if (IS_ERR(lba_map)) { 1856229d4f11SHannes Reinecke ret = PTR_ERR(lba_map); 1857229d4f11SHannes Reinecke break; 1858229d4f11SHannes Reinecke } 1859229d4f11SHannes Reinecke pg = 0; 1860229d4f11SHannes Reinecke while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { 1861229d4f11SHannes Reinecke switch (state) { 1862229d4f11SHannes Reinecke case 'O': 1863229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; 1864229d4f11SHannes Reinecke break; 1865229d4f11SHannes Reinecke case 'A': 1866229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; 1867229d4f11SHannes Reinecke break; 1868229d4f11SHannes Reinecke case 'S': 1869229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_STANDBY; 1870229d4f11SHannes Reinecke break; 1871229d4f11SHannes Reinecke case 'U': 1872229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; 1873229d4f11SHannes Reinecke break; 1874229d4f11SHannes Reinecke default: 1875229d4f11SHannes Reinecke pr_err("Invalid ALUA state '%c'\n", state); 1876229d4f11SHannes Reinecke ret = -EINVAL; 1877229d4f11SHannes Reinecke goto out; 1878229d4f11SHannes Reinecke } 1879229d4f11SHannes Reinecke 1880229d4f11SHannes Reinecke ret = core_alua_allocate_lba_map_mem(lba_map, 1881229d4f11SHannes Reinecke pg_id, alua_state); 1882229d4f11SHannes Reinecke if (ret) { 1883229d4f11SHannes Reinecke pr_err("Invalid target descriptor %d:%c " 1884229d4f11SHannes Reinecke "at line %d\n", 1885229d4f11SHannes Reinecke pg_id, state, num); 1886229d4f11SHannes Reinecke break; 1887229d4f11SHannes Reinecke } 1888229d4f11SHannes Reinecke pg++; 1889229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1890229d4f11SHannes Reinecke if (ptr) 1891229d4f11SHannes Reinecke ptr++; 1892229d4f11SHannes Reinecke else 1893229d4f11SHannes Reinecke break; 1894229d4f11SHannes Reinecke } 1895229d4f11SHannes Reinecke if (pg_num == -1) 1896229d4f11SHannes Reinecke pg_num = pg; 1897229d4f11SHannes Reinecke else if (pg != pg_num) { 1898229d4f11SHannes Reinecke pr_err("Only %d from %d port groups definitions " 1899229d4f11SHannes Reinecke "at line %d\n", pg, pg_num, num); 1900229d4f11SHannes Reinecke ret = -EINVAL; 1901229d4f11SHannes Reinecke break; 1902229d4f11SHannes Reinecke } 1903229d4f11SHannes Reinecke num++; 1904229d4f11SHannes Reinecke } 1905229d4f11SHannes Reinecke out: 1906229d4f11SHannes Reinecke if (ret) { 1907229d4f11SHannes Reinecke core_alua_free_lba_map(&lba_list); 1908229d4f11SHannes Reinecke count = ret; 1909229d4f11SHannes Reinecke } else 1910229d4f11SHannes Reinecke core_alua_set_lba_map(dev, &lba_list, 1911229d4f11SHannes Reinecke segment_size, segment_mult); 1912229d4f11SHannes Reinecke kfree(map_entries); 1913229d4f11SHannes Reinecke return count; 1914229d4f11SHannes Reinecke } 1915229d4f11SHannes Reinecke 1916229d4f11SHannes Reinecke static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { 1917229d4f11SHannes Reinecke .attr = { .ca_owner = THIS_MODULE, 1918229d4f11SHannes Reinecke .ca_name = "lba_map", 1919229d4f11SHannes Reinecke .ca_mode = S_IRUGO | S_IWUSR }, 1920229d4f11SHannes Reinecke .show = target_core_show_dev_lba_map, 1921229d4f11SHannes Reinecke .store = target_core_store_dev_lba_map, 1922229d4f11SHannes Reinecke }; 1923229d4f11SHannes Reinecke 1924c66ac9dbSNicholas Bellinger static struct configfs_attribute *lio_core_dev_attrs[] = { 1925c66ac9dbSNicholas Bellinger &target_core_attr_dev_info.attr, 1926c66ac9dbSNicholas Bellinger &target_core_attr_dev_control.attr, 1927c66ac9dbSNicholas Bellinger &target_core_attr_dev_alias.attr, 1928c66ac9dbSNicholas Bellinger &target_core_attr_dev_udev_path.attr, 1929c66ac9dbSNicholas Bellinger &target_core_attr_dev_enable.attr, 1930c66ac9dbSNicholas Bellinger &target_core_attr_dev_alua_lu_gp.attr, 1931229d4f11SHannes Reinecke &target_core_attr_dev_lba_map.attr, 1932c66ac9dbSNicholas Bellinger NULL, 1933c66ac9dbSNicholas Bellinger }; 1934c66ac9dbSNicholas Bellinger 1935c66ac9dbSNicholas Bellinger static void target_core_dev_release(struct config_item *item) 1936c66ac9dbSNicholas Bellinger { 19370fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 19380fd97ccfSChristoph Hellwig struct se_device *dev = 19390fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1940c66ac9dbSNicholas Bellinger 1941c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 19420fd97ccfSChristoph Hellwig target_free_device(dev); 1943c66ac9dbSNicholas Bellinger } 1944c66ac9dbSNicholas Bellinger 1945c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_show(struct config_item *item, 1946c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 1947c66ac9dbSNicholas Bellinger char *page) 1948c66ac9dbSNicholas Bellinger { 19490fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 19500fd97ccfSChristoph Hellwig struct se_device *dev = 19510fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1952c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 1953c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 1954c66ac9dbSNicholas Bellinger 19556708bb27SAndy Grover if (!tc_attr->show) 1956c66ac9dbSNicholas Bellinger return -EINVAL; 1957c66ac9dbSNicholas Bellinger 19580fd97ccfSChristoph Hellwig return tc_attr->show(dev, page); 1959c66ac9dbSNicholas Bellinger } 1960c66ac9dbSNicholas Bellinger 1961c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_store(struct config_item *item, 1962c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 1963c66ac9dbSNicholas Bellinger const char *page, size_t count) 1964c66ac9dbSNicholas Bellinger { 19650fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 19660fd97ccfSChristoph Hellwig struct se_device *dev = 19670fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1968c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 1969c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 1970c66ac9dbSNicholas Bellinger 19716708bb27SAndy Grover if (!tc_attr->store) 1972c66ac9dbSNicholas Bellinger return -EINVAL; 1973c66ac9dbSNicholas Bellinger 19740fd97ccfSChristoph Hellwig return tc_attr->store(dev, page, count); 1975c66ac9dbSNicholas Bellinger } 1976c66ac9dbSNicholas Bellinger 1977c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_item_ops = { 1978c66ac9dbSNicholas Bellinger .release = target_core_dev_release, 1979c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_show, 1980c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_store, 1981c66ac9dbSNicholas Bellinger }; 1982c66ac9dbSNicholas Bellinger 1983c66ac9dbSNicholas Bellinger static struct config_item_type target_core_dev_cit = { 1984c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_dev_item_ops, 1985c66ac9dbSNicholas Bellinger .ct_attrs = lio_core_dev_attrs, 1986c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 1987c66ac9dbSNicholas Bellinger }; 1988c66ac9dbSNicholas Bellinger 1989c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_dev_cit */ 1990c66ac9dbSNicholas Bellinger 1991c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 1992c66ac9dbSNicholas Bellinger 1993c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); 1994c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ 1995c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 1996c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 1997c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 1998c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name, \ 1999c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_store_attr_##_name); 2000c66ac9dbSNicholas Bellinger 2001c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ 2002c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 2003c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 2004c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2005c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name); 2006c66ac9dbSNicholas Bellinger 2007c66ac9dbSNicholas Bellinger /* 2008c66ac9dbSNicholas Bellinger * lu_gp_id 2009c66ac9dbSNicholas Bellinger */ 2010c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( 2011c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 2012c66ac9dbSNicholas Bellinger char *page) 2013c66ac9dbSNicholas Bellinger { 20146708bb27SAndy Grover if (!lu_gp->lu_gp_valid_id) 2015c66ac9dbSNicholas Bellinger return 0; 2016c66ac9dbSNicholas Bellinger 2017c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 2018c66ac9dbSNicholas Bellinger } 2019c66ac9dbSNicholas Bellinger 2020c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( 2021c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 2022c66ac9dbSNicholas Bellinger const char *page, 2023c66ac9dbSNicholas Bellinger size_t count) 2024c66ac9dbSNicholas Bellinger { 2025c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 2026c66ac9dbSNicholas Bellinger unsigned long lu_gp_id; 2027c66ac9dbSNicholas Bellinger int ret; 2028c66ac9dbSNicholas Bellinger 202957103d7fSJingoo Han ret = kstrtoul(page, 0, &lu_gp_id); 2030c66ac9dbSNicholas Bellinger if (ret < 0) { 203157103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2032c66ac9dbSNicholas Bellinger " lu_gp_id\n", ret); 203357103d7fSJingoo Han return ret; 2034c66ac9dbSNicholas Bellinger } 2035c66ac9dbSNicholas Bellinger if (lu_gp_id > 0x0000ffff) { 20366708bb27SAndy Grover pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 2037c66ac9dbSNicholas Bellinger " 0x0000ffff\n", lu_gp_id); 2038c66ac9dbSNicholas Bellinger return -EINVAL; 2039c66ac9dbSNicholas Bellinger } 2040c66ac9dbSNicholas Bellinger 2041c66ac9dbSNicholas Bellinger ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 2042c66ac9dbSNicholas Bellinger if (ret < 0) 2043c66ac9dbSNicholas Bellinger return -EINVAL; 2044c66ac9dbSNicholas Bellinger 20456708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 2046c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s to ID: %hu\n", 2047c66ac9dbSNicholas Bellinger config_item_name(&alua_lu_gp_cg->cg_item), 2048c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2049c66ac9dbSNicholas Bellinger 2050c66ac9dbSNicholas Bellinger return count; 2051c66ac9dbSNicholas Bellinger } 2052c66ac9dbSNicholas Bellinger 2053c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); 2054c66ac9dbSNicholas Bellinger 2055c66ac9dbSNicholas Bellinger /* 2056c66ac9dbSNicholas Bellinger * members 2057c66ac9dbSNicholas Bellinger */ 2058c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_members( 2059c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 2060c66ac9dbSNicholas Bellinger char *page) 2061c66ac9dbSNicholas Bellinger { 2062c66ac9dbSNicholas Bellinger struct se_device *dev; 2063c66ac9dbSNicholas Bellinger struct se_hba *hba; 2064c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2065c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2066c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 2067c66ac9dbSNicholas Bellinger 2068c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 2069c66ac9dbSNicholas Bellinger 2070c66ac9dbSNicholas Bellinger spin_lock(&lu_gp->lu_gp_lock); 2071c66ac9dbSNicholas Bellinger list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 2072c66ac9dbSNicholas Bellinger dev = lu_gp_mem->lu_gp_mem_dev; 20730fd97ccfSChristoph Hellwig hba = dev->se_hba; 2074c66ac9dbSNicholas Bellinger 2075c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 2076c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 20770fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item)); 2078c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2079c66ac9dbSNicholas Bellinger 2080c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 20816708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2082c66ac9dbSNicholas Bellinger "_members buffer\n"); 2083c66ac9dbSNicholas Bellinger break; 2084c66ac9dbSNicholas Bellinger } 2085c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2086c66ac9dbSNicholas Bellinger len += cur_len; 2087c66ac9dbSNicholas Bellinger } 2088c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp->lu_gp_lock); 2089c66ac9dbSNicholas Bellinger 2090c66ac9dbSNicholas Bellinger return len; 2091c66ac9dbSNicholas Bellinger } 2092c66ac9dbSNicholas Bellinger 2093c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR_RO(members); 2094c66ac9dbSNicholas Bellinger 2095c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); 2096c66ac9dbSNicholas Bellinger 2097c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 2098c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_lu_gp_id.attr, 2099c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_members.attr, 2100c66ac9dbSNicholas Bellinger NULL, 2101c66ac9dbSNicholas Bellinger }; 2102c66ac9dbSNicholas Bellinger 21031f6fe7cbSNicholas Bellinger static void target_core_alua_lu_gp_release(struct config_item *item) 21041f6fe7cbSNicholas Bellinger { 21051f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 21061f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 21071f6fe7cbSNicholas Bellinger 21081f6fe7cbSNicholas Bellinger core_alua_free_lu_gp(lu_gp); 21091f6fe7cbSNicholas Bellinger } 21101f6fe7cbSNicholas Bellinger 2111c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_lu_gp_ops = { 21121f6fe7cbSNicholas Bellinger .release = target_core_alua_lu_gp_release, 2113c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_lu_gp_attr_show, 2114c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_lu_gp_attr_store, 2115c66ac9dbSNicholas Bellinger }; 2116c66ac9dbSNicholas Bellinger 2117c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gp_cit = { 2118c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_lu_gp_ops, 2119c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_lu_gp_attrs, 2120c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2121c66ac9dbSNicholas Bellinger }; 2122c66ac9dbSNicholas Bellinger 2123c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 2124c66ac9dbSNicholas Bellinger 2125c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 2126c66ac9dbSNicholas Bellinger 2127c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_lu_gp( 2128c66ac9dbSNicholas Bellinger struct config_group *group, 2129c66ac9dbSNicholas Bellinger const char *name) 2130c66ac9dbSNicholas Bellinger { 2131c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2132c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = NULL; 2133c66ac9dbSNicholas Bellinger struct config_item *alua_lu_gp_ci = NULL; 2134c66ac9dbSNicholas Bellinger 2135c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp(name, 0); 2136c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 2137c66ac9dbSNicholas Bellinger return NULL; 2138c66ac9dbSNicholas Bellinger 2139c66ac9dbSNicholas Bellinger alua_lu_gp_cg = &lu_gp->lu_gp_group; 2140c66ac9dbSNicholas Bellinger alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 2141c66ac9dbSNicholas Bellinger 2142c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_lu_gp_cg, name, 2143c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 2144c66ac9dbSNicholas Bellinger 21456708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 2146c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s\n", 2147c66ac9dbSNicholas Bellinger config_item_name(alua_lu_gp_ci)); 2148c66ac9dbSNicholas Bellinger 2149c66ac9dbSNicholas Bellinger return alua_lu_gp_cg; 2150c66ac9dbSNicholas Bellinger 2151c66ac9dbSNicholas Bellinger } 2152c66ac9dbSNicholas Bellinger 2153c66ac9dbSNicholas Bellinger static void target_core_alua_drop_lu_gp( 2154c66ac9dbSNicholas Bellinger struct config_group *group, 2155c66ac9dbSNicholas Bellinger struct config_item *item) 2156c66ac9dbSNicholas Bellinger { 2157c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 2158c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 2159c66ac9dbSNicholas Bellinger 21606708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 2161c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s, ID: %hu\n", 2162c66ac9dbSNicholas Bellinger config_item_name(item), lu_gp->lu_gp_id); 21631f6fe7cbSNicholas Bellinger /* 21641f6fe7cbSNicholas Bellinger * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 21651f6fe7cbSNicholas Bellinger * -> target_core_alua_lu_gp_release() 21661f6fe7cbSNicholas Bellinger */ 2167c66ac9dbSNicholas Bellinger config_item_put(item); 2168c66ac9dbSNicholas Bellinger } 2169c66ac9dbSNicholas Bellinger 2170c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 2171c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_lu_gp, 2172c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_lu_gp, 2173c66ac9dbSNicholas Bellinger }; 2174c66ac9dbSNicholas Bellinger 2175c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gps_cit = { 2176c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2177c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_lu_gps_group_ops, 2178c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2179c66ac9dbSNicholas Bellinger }; 2180c66ac9dbSNicholas Bellinger 2181c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 2182c66ac9dbSNicholas Bellinger 2183c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2184c66ac9dbSNicholas Bellinger 2185c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); 2186c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ 2187c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 2188c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 2189c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2190c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name, \ 2191c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_store_attr_##_name); 2192c66ac9dbSNicholas Bellinger 2193c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ 2194c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 2195c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 2196c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2197c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name); 2198c66ac9dbSNicholas Bellinger 2199c66ac9dbSNicholas Bellinger /* 2200c66ac9dbSNicholas Bellinger * alua_access_state 2201c66ac9dbSNicholas Bellinger */ 2202c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( 2203c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2204c66ac9dbSNicholas Bellinger char *page) 2205c66ac9dbSNicholas Bellinger { 2206c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", 2207c66ac9dbSNicholas Bellinger atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); 2208c66ac9dbSNicholas Bellinger } 2209c66ac9dbSNicholas Bellinger 2210c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( 2211c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2212c66ac9dbSNicholas Bellinger const char *page, 2213c66ac9dbSNicholas Bellinger size_t count) 2214c66ac9dbSNicholas Bellinger { 22150fd97ccfSChristoph Hellwig struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; 2216c66ac9dbSNicholas Bellinger unsigned long tmp; 2217c66ac9dbSNicholas Bellinger int new_state, ret; 2218c66ac9dbSNicholas Bellinger 22196708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 2220125d0119SHannes Reinecke pr_err("Unable to do implicit ALUA on non valid" 2221c66ac9dbSNicholas Bellinger " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); 2222c66ac9dbSNicholas Bellinger return -EINVAL; 2223c66ac9dbSNicholas Bellinger } 2224f1453773SNicholas Bellinger if (!(dev->dev_flags & DF_CONFIGURED)) { 2225f1453773SNicholas Bellinger pr_err("Unable to set alua_access_state while device is" 2226f1453773SNicholas Bellinger " not configured\n"); 2227f1453773SNicholas Bellinger return -ENODEV; 2228f1453773SNicholas Bellinger } 2229c66ac9dbSNicholas Bellinger 223057103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2231c66ac9dbSNicholas Bellinger if (ret < 0) { 22326708bb27SAndy Grover pr_err("Unable to extract new ALUA access state from" 2233c66ac9dbSNicholas Bellinger " %s\n", page); 223457103d7fSJingoo Han return ret; 2235c66ac9dbSNicholas Bellinger } 2236c66ac9dbSNicholas Bellinger new_state = (int)tmp; 2237c66ac9dbSNicholas Bellinger 2238125d0119SHannes Reinecke if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { 2239125d0119SHannes Reinecke pr_err("Unable to process implicit configfs ALUA" 2240125d0119SHannes Reinecke " transition while TPGS_IMPLICIT_ALUA is disabled\n"); 2241c66ac9dbSNicholas Bellinger return -EINVAL; 2242c66ac9dbSNicholas Bellinger } 2243c66094bfSHannes Reinecke if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && 2244c66094bfSHannes Reinecke new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { 2245c66094bfSHannes Reinecke /* LBA DEPENDENT is only allowed with implicit ALUA */ 2246c66094bfSHannes Reinecke pr_err("Unable to process implicit configfs ALUA transition" 2247c66094bfSHannes Reinecke " while explicit ALUA management is enabled\n"); 2248c66094bfSHannes Reinecke return -EINVAL; 2249c66094bfSHannes Reinecke } 2250c66ac9dbSNicholas Bellinger 22510fd97ccfSChristoph Hellwig ret = core_alua_do_port_transition(tg_pt_gp, dev, 2252c66ac9dbSNicholas Bellinger NULL, NULL, new_state, 0); 2253c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; 2254c66ac9dbSNicholas Bellinger } 2255c66ac9dbSNicholas Bellinger 2256c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); 2257c66ac9dbSNicholas Bellinger 2258c66ac9dbSNicholas Bellinger /* 2259c66ac9dbSNicholas Bellinger * alua_access_status 2260c66ac9dbSNicholas Bellinger */ 2261c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( 2262c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2263c66ac9dbSNicholas Bellinger char *page) 2264c66ac9dbSNicholas Bellinger { 2265c66ac9dbSNicholas Bellinger return sprintf(page, "%s\n", 2266c66ac9dbSNicholas Bellinger core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2267c66ac9dbSNicholas Bellinger } 2268c66ac9dbSNicholas Bellinger 2269c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( 2270c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2271c66ac9dbSNicholas Bellinger const char *page, 2272c66ac9dbSNicholas Bellinger size_t count) 2273c66ac9dbSNicholas Bellinger { 2274c66ac9dbSNicholas Bellinger unsigned long tmp; 2275c66ac9dbSNicholas Bellinger int new_status, ret; 2276c66ac9dbSNicholas Bellinger 22776708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 22786708bb27SAndy Grover pr_err("Unable to do set ALUA access status on non" 2279c66ac9dbSNicholas Bellinger " valid tg_pt_gp ID: %hu\n", 2280c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_valid_id); 2281c66ac9dbSNicholas Bellinger return -EINVAL; 2282c66ac9dbSNicholas Bellinger } 2283c66ac9dbSNicholas Bellinger 228457103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2285c66ac9dbSNicholas Bellinger if (ret < 0) { 22866708bb27SAndy Grover pr_err("Unable to extract new ALUA access status" 2287c66ac9dbSNicholas Bellinger " from %s\n", page); 228857103d7fSJingoo Han return ret; 2289c66ac9dbSNicholas Bellinger } 2290c66ac9dbSNicholas Bellinger new_status = (int)tmp; 2291c66ac9dbSNicholas Bellinger 2292c66ac9dbSNicholas Bellinger if ((new_status != ALUA_STATUS_NONE) && 2293125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && 2294125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { 22956708bb27SAndy Grover pr_err("Illegal ALUA access status: 0x%02x\n", 2296c66ac9dbSNicholas Bellinger new_status); 2297c66ac9dbSNicholas Bellinger return -EINVAL; 2298c66ac9dbSNicholas Bellinger } 2299c66ac9dbSNicholas Bellinger 2300c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2301c66ac9dbSNicholas Bellinger return count; 2302c66ac9dbSNicholas Bellinger } 2303c66ac9dbSNicholas Bellinger 2304c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); 2305c66ac9dbSNicholas Bellinger 2306c66ac9dbSNicholas Bellinger /* 2307c66ac9dbSNicholas Bellinger * alua_access_type 2308c66ac9dbSNicholas Bellinger */ 2309c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( 2310c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2311c66ac9dbSNicholas Bellinger char *page) 2312c66ac9dbSNicholas Bellinger { 2313c66ac9dbSNicholas Bellinger return core_alua_show_access_type(tg_pt_gp, page); 2314c66ac9dbSNicholas Bellinger } 2315c66ac9dbSNicholas Bellinger 2316c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( 2317c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2318c66ac9dbSNicholas Bellinger const char *page, 2319c66ac9dbSNicholas Bellinger size_t count) 2320c66ac9dbSNicholas Bellinger { 2321c66ac9dbSNicholas Bellinger return core_alua_store_access_type(tg_pt_gp, page, count); 2322c66ac9dbSNicholas Bellinger } 2323c66ac9dbSNicholas Bellinger 2324c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); 2325c66ac9dbSNicholas Bellinger 2326c66ac9dbSNicholas Bellinger /* 23276be526c4SHannes Reinecke * alua_supported_states 23286be526c4SHannes Reinecke */ 2329b0a382c5SHannes Reinecke 2330b0a382c5SHannes Reinecke #define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit) \ 2331b0a382c5SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \ 2332b0a382c5SHannes Reinecke struct t10_alua_tg_pt_gp *t, char *p) \ 2333b0a382c5SHannes Reinecke { \ 2334b0a382c5SHannes Reinecke return sprintf(p, "%d\n", !!(t->_var & _bit)); \ 23356be526c4SHannes Reinecke } 23366be526c4SHannes Reinecke 2337b0a382c5SHannes Reinecke #define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit) \ 2338b0a382c5SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\ 2339b0a382c5SHannes Reinecke struct t10_alua_tg_pt_gp *t, const char *p, size_t c) \ 2340b0a382c5SHannes Reinecke { \ 2341b0a382c5SHannes Reinecke unsigned long tmp; \ 2342b0a382c5SHannes Reinecke int ret; \ 2343b0a382c5SHannes Reinecke \ 2344b0a382c5SHannes Reinecke if (!t->tg_pt_gp_valid_id) { \ 2345b0a382c5SHannes Reinecke pr_err("Unable to do set ##_name ALUA state on non" \ 2346b0a382c5SHannes Reinecke " valid tg_pt_gp ID: %hu\n", \ 2347b0a382c5SHannes Reinecke t->tg_pt_gp_valid_id); \ 2348b0a382c5SHannes Reinecke return -EINVAL; \ 2349b0a382c5SHannes Reinecke } \ 2350b0a382c5SHannes Reinecke \ 2351b0a382c5SHannes Reinecke ret = kstrtoul(p, 0, &tmp); \ 2352b0a382c5SHannes Reinecke if (ret < 0) { \ 2353b0a382c5SHannes Reinecke pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ 2354b0a382c5SHannes Reinecke return -EINVAL; \ 2355b0a382c5SHannes Reinecke } \ 2356b0a382c5SHannes Reinecke if (tmp > 1) { \ 2357b0a382c5SHannes Reinecke pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ 2358b0a382c5SHannes Reinecke return -EINVAL; \ 2359b0a382c5SHannes Reinecke } \ 2360b0a382c5SHannes Reinecke if (!tmp) \ 2361b0a382c5SHannes Reinecke t->_var |= _bit; \ 2362b0a382c5SHannes Reinecke else \ 2363b0a382c5SHannes Reinecke t->_var &= ~_bit; \ 2364b0a382c5SHannes Reinecke \ 2365b0a382c5SHannes Reinecke return c; \ 23666be526c4SHannes Reinecke } 23676be526c4SHannes Reinecke 2368b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning, 2369b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_T_SUP); 2370b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning, 2371b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_T_SUP); 2372b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR); 23736be526c4SHannes Reinecke 2374b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline, 2375b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_O_SUP); 2376b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(offline, 2377b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_O_SUP); 2378b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR); 23796be526c4SHannes Reinecke 2380b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent, 2381b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); 2382b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent, 2383b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); 2384c66094bfSHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO); 23856be526c4SHannes Reinecke 2386b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable, 2387b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_U_SUP); 2388b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable, 2389b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_U_SUP); 2390b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR); 23916be526c4SHannes Reinecke 2392b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby, 2393b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_S_SUP); 2394b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(standby, 2395b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_S_SUP); 2396b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR); 2397b0a382c5SHannes Reinecke 2398b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized, 2399b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AO_SUP); 2400b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized, 2401b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AO_SUP); 2402b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR); 2403b0a382c5SHannes Reinecke 2404b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized, 2405b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AN_SUP); 2406b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized, 2407b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AN_SUP); 2408b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR); 24096be526c4SHannes Reinecke 24106be526c4SHannes Reinecke /* 2411c66ac9dbSNicholas Bellinger * alua_write_metadata 2412c66ac9dbSNicholas Bellinger */ 2413c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( 2414c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2415c66ac9dbSNicholas Bellinger char *page) 2416c66ac9dbSNicholas Bellinger { 2417c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); 2418c66ac9dbSNicholas Bellinger } 2419c66ac9dbSNicholas Bellinger 2420c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( 2421c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2422c66ac9dbSNicholas Bellinger const char *page, 2423c66ac9dbSNicholas Bellinger size_t count) 2424c66ac9dbSNicholas Bellinger { 2425c66ac9dbSNicholas Bellinger unsigned long tmp; 2426c66ac9dbSNicholas Bellinger int ret; 2427c66ac9dbSNicholas Bellinger 242857103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2429c66ac9dbSNicholas Bellinger if (ret < 0) { 24306708bb27SAndy Grover pr_err("Unable to extract alua_write_metadata\n"); 243157103d7fSJingoo Han return ret; 2432c66ac9dbSNicholas Bellinger } 2433c66ac9dbSNicholas Bellinger 2434c66ac9dbSNicholas Bellinger if ((tmp != 0) && (tmp != 1)) { 24356708bb27SAndy Grover pr_err("Illegal value for alua_write_metadata:" 2436c66ac9dbSNicholas Bellinger " %lu\n", tmp); 2437c66ac9dbSNicholas Bellinger return -EINVAL; 2438c66ac9dbSNicholas Bellinger } 2439c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2440c66ac9dbSNicholas Bellinger 2441c66ac9dbSNicholas Bellinger return count; 2442c66ac9dbSNicholas Bellinger } 2443c66ac9dbSNicholas Bellinger 2444c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); 2445c66ac9dbSNicholas Bellinger 2446c66ac9dbSNicholas Bellinger 2447c66ac9dbSNicholas Bellinger 2448c66ac9dbSNicholas Bellinger /* 2449c66ac9dbSNicholas Bellinger * nonop_delay_msecs 2450c66ac9dbSNicholas Bellinger */ 2451c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( 2452c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2453c66ac9dbSNicholas Bellinger char *page) 2454c66ac9dbSNicholas Bellinger { 2455c66ac9dbSNicholas Bellinger return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); 2456c66ac9dbSNicholas Bellinger 2457c66ac9dbSNicholas Bellinger } 2458c66ac9dbSNicholas Bellinger 2459c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( 2460c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2461c66ac9dbSNicholas Bellinger const char *page, 2462c66ac9dbSNicholas Bellinger size_t count) 2463c66ac9dbSNicholas Bellinger { 2464c66ac9dbSNicholas Bellinger return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); 2465c66ac9dbSNicholas Bellinger } 2466c66ac9dbSNicholas Bellinger 2467c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); 2468c66ac9dbSNicholas Bellinger 2469c66ac9dbSNicholas Bellinger /* 2470c66ac9dbSNicholas Bellinger * trans_delay_msecs 2471c66ac9dbSNicholas Bellinger */ 2472c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( 2473c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2474c66ac9dbSNicholas Bellinger char *page) 2475c66ac9dbSNicholas Bellinger { 2476c66ac9dbSNicholas Bellinger return core_alua_show_trans_delay_msecs(tg_pt_gp, page); 2477c66ac9dbSNicholas Bellinger } 2478c66ac9dbSNicholas Bellinger 2479c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( 2480c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2481c66ac9dbSNicholas Bellinger const char *page, 2482c66ac9dbSNicholas Bellinger size_t count) 2483c66ac9dbSNicholas Bellinger { 2484c66ac9dbSNicholas Bellinger return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); 2485c66ac9dbSNicholas Bellinger } 2486c66ac9dbSNicholas Bellinger 2487c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); 2488c66ac9dbSNicholas Bellinger 2489c66ac9dbSNicholas Bellinger /* 2490125d0119SHannes Reinecke * implicit_trans_secs 24915b9a4d72SNicholas Bellinger */ 2492125d0119SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs( 24935b9a4d72SNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 24945b9a4d72SNicholas Bellinger char *page) 24955b9a4d72SNicholas Bellinger { 2496125d0119SHannes Reinecke return core_alua_show_implicit_trans_secs(tg_pt_gp, page); 24975b9a4d72SNicholas Bellinger } 24985b9a4d72SNicholas Bellinger 2499125d0119SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs( 25005b9a4d72SNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 25015b9a4d72SNicholas Bellinger const char *page, 25025b9a4d72SNicholas Bellinger size_t count) 25035b9a4d72SNicholas Bellinger { 2504125d0119SHannes Reinecke return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count); 25055b9a4d72SNicholas Bellinger } 25065b9a4d72SNicholas Bellinger 2507125d0119SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR); 25085b9a4d72SNicholas Bellinger 25095b9a4d72SNicholas Bellinger /* 2510c66ac9dbSNicholas Bellinger * preferred 2511c66ac9dbSNicholas Bellinger */ 2512c66ac9dbSNicholas Bellinger 2513c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( 2514c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2515c66ac9dbSNicholas Bellinger char *page) 2516c66ac9dbSNicholas Bellinger { 2517c66ac9dbSNicholas Bellinger return core_alua_show_preferred_bit(tg_pt_gp, page); 2518c66ac9dbSNicholas Bellinger } 2519c66ac9dbSNicholas Bellinger 2520c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( 2521c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2522c66ac9dbSNicholas Bellinger const char *page, 2523c66ac9dbSNicholas Bellinger size_t count) 2524c66ac9dbSNicholas Bellinger { 2525c66ac9dbSNicholas Bellinger return core_alua_store_preferred_bit(tg_pt_gp, page, count); 2526c66ac9dbSNicholas Bellinger } 2527c66ac9dbSNicholas Bellinger 2528c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); 2529c66ac9dbSNicholas Bellinger 2530c66ac9dbSNicholas Bellinger /* 2531c66ac9dbSNicholas Bellinger * tg_pt_gp_id 2532c66ac9dbSNicholas Bellinger */ 2533c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( 2534c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2535c66ac9dbSNicholas Bellinger char *page) 2536c66ac9dbSNicholas Bellinger { 25376708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) 2538c66ac9dbSNicholas Bellinger return 0; 2539c66ac9dbSNicholas Bellinger 2540c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 2541c66ac9dbSNicholas Bellinger } 2542c66ac9dbSNicholas Bellinger 2543c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( 2544c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2545c66ac9dbSNicholas Bellinger const char *page, 2546c66ac9dbSNicholas Bellinger size_t count) 2547c66ac9dbSNicholas Bellinger { 2548c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2549c66ac9dbSNicholas Bellinger unsigned long tg_pt_gp_id; 2550c66ac9dbSNicholas Bellinger int ret; 2551c66ac9dbSNicholas Bellinger 255257103d7fSJingoo Han ret = kstrtoul(page, 0, &tg_pt_gp_id); 2553c66ac9dbSNicholas Bellinger if (ret < 0) { 255457103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2555c66ac9dbSNicholas Bellinger " tg_pt_gp_id\n", ret); 255657103d7fSJingoo Han return ret; 2557c66ac9dbSNicholas Bellinger } 2558c66ac9dbSNicholas Bellinger if (tg_pt_gp_id > 0x0000ffff) { 25596708bb27SAndy Grover pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" 2560c66ac9dbSNicholas Bellinger " 0x0000ffff\n", tg_pt_gp_id); 2561c66ac9dbSNicholas Bellinger return -EINVAL; 2562c66ac9dbSNicholas Bellinger } 2563c66ac9dbSNicholas Bellinger 2564c66ac9dbSNicholas Bellinger ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 2565c66ac9dbSNicholas Bellinger if (ret < 0) 2566c66ac9dbSNicholas Bellinger return -EINVAL; 2567c66ac9dbSNicholas Bellinger 25686708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 2569c66ac9dbSNicholas Bellinger "core/alua/tg_pt_gps/%s to ID: %hu\n", 2570c66ac9dbSNicholas Bellinger config_item_name(&alua_tg_pt_gp_cg->cg_item), 2571c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_id); 2572c66ac9dbSNicholas Bellinger 2573c66ac9dbSNicholas Bellinger return count; 2574c66ac9dbSNicholas Bellinger } 2575c66ac9dbSNicholas Bellinger 2576c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); 2577c66ac9dbSNicholas Bellinger 2578c66ac9dbSNicholas Bellinger /* 2579c66ac9dbSNicholas Bellinger * members 2580c66ac9dbSNicholas Bellinger */ 2581c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_members( 2582c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2583c66ac9dbSNicholas Bellinger char *page) 2584c66ac9dbSNicholas Bellinger { 2585c66ac9dbSNicholas Bellinger struct se_port *port; 2586c66ac9dbSNicholas Bellinger struct se_portal_group *tpg; 2587c66ac9dbSNicholas Bellinger struct se_lun *lun; 2588c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 2589c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2590c66ac9dbSNicholas Bellinger unsigned char buf[TG_PT_GROUP_NAME_BUF]; 2591c66ac9dbSNicholas Bellinger 2592c66ac9dbSNicholas Bellinger memset(buf, 0, TG_PT_GROUP_NAME_BUF); 2593c66ac9dbSNicholas Bellinger 2594c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp->tg_pt_gp_lock); 2595c66ac9dbSNicholas Bellinger list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, 2596c66ac9dbSNicholas Bellinger tg_pt_gp_mem_list) { 2597c66ac9dbSNicholas Bellinger port = tg_pt_gp_mem->tg_pt; 2598c66ac9dbSNicholas Bellinger tpg = port->sep_tpg; 2599c66ac9dbSNicholas Bellinger lun = port->sep_lun; 2600c66ac9dbSNicholas Bellinger 2601c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 2602e3d6f909SAndy Grover "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), 2603e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), 2604e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 2605c66ac9dbSNicholas Bellinger config_item_name(&lun->lun_group.cg_item)); 2606c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2607c66ac9dbSNicholas Bellinger 2608c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 26096708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2610c66ac9dbSNicholas Bellinger "_members buffer\n"); 2611c66ac9dbSNicholas Bellinger break; 2612c66ac9dbSNicholas Bellinger } 2613c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2614c66ac9dbSNicholas Bellinger len += cur_len; 2615c66ac9dbSNicholas Bellinger } 2616c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 2617c66ac9dbSNicholas Bellinger 2618c66ac9dbSNicholas Bellinger return len; 2619c66ac9dbSNicholas Bellinger } 2620c66ac9dbSNicholas Bellinger 2621c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR_RO(members); 2622c66ac9dbSNicholas Bellinger 2623c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, 2624c66ac9dbSNicholas Bellinger tg_pt_gp_group); 2625c66ac9dbSNicholas Bellinger 2626c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 2627c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_state.attr, 2628c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_status.attr, 2629c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_type.attr, 2630b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_transitioning.attr, 2631b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_offline.attr, 2632b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr, 2633b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_unavailable.attr, 2634b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_standby.attr, 2635b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr, 2636b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr, 2637c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_write_metadata.attr, 2638c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, 2639c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, 2640125d0119SHannes Reinecke &target_core_alua_tg_pt_gp_implicit_trans_secs.attr, 2641c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_preferred.attr, 2642c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, 2643c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_members.attr, 2644c66ac9dbSNicholas Bellinger NULL, 2645c66ac9dbSNicholas Bellinger }; 2646c66ac9dbSNicholas Bellinger 26471f6fe7cbSNicholas Bellinger static void target_core_alua_tg_pt_gp_release(struct config_item *item) 26481f6fe7cbSNicholas Bellinger { 26491f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 26501f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 26511f6fe7cbSNicholas Bellinger 26521f6fe7cbSNicholas Bellinger core_alua_free_tg_pt_gp(tg_pt_gp); 26531f6fe7cbSNicholas Bellinger } 26541f6fe7cbSNicholas Bellinger 2655c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 26561f6fe7cbSNicholas Bellinger .release = target_core_alua_tg_pt_gp_release, 2657c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_tg_pt_gp_attr_show, 2658c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_tg_pt_gp_attr_store, 2659c66ac9dbSNicholas Bellinger }; 2660c66ac9dbSNicholas Bellinger 2661c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_tg_pt_gp_cit = { 2662c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 2663c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_tg_pt_gp_attrs, 2664c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2665c66ac9dbSNicholas Bellinger }; 2666c66ac9dbSNicholas Bellinger 2667c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2668c66ac9dbSNicholas Bellinger 2669c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2670c66ac9dbSNicholas Bellinger 2671c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_tg_pt_gp( 2672c66ac9dbSNicholas Bellinger struct config_group *group, 2673c66ac9dbSNicholas Bellinger const char *name) 2674c66ac9dbSNicholas Bellinger { 2675c66ac9dbSNicholas Bellinger struct t10_alua *alua = container_of(group, struct t10_alua, 2676c66ac9dbSNicholas Bellinger alua_tg_pt_gps_group); 2677c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2678c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = NULL; 2679c66ac9dbSNicholas Bellinger struct config_item *alua_tg_pt_gp_ci = NULL; 2680c66ac9dbSNicholas Bellinger 26810fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); 26826708bb27SAndy Grover if (!tg_pt_gp) 2683c66ac9dbSNicholas Bellinger return NULL; 2684c66ac9dbSNicholas Bellinger 2685c66ac9dbSNicholas Bellinger alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2686c66ac9dbSNicholas Bellinger alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 2687c66ac9dbSNicholas Bellinger 2688c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_tg_pt_gp_cg, name, 2689c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_cit); 2690c66ac9dbSNicholas Bellinger 26916708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 2692c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s\n", 2693c66ac9dbSNicholas Bellinger config_item_name(alua_tg_pt_gp_ci)); 2694c66ac9dbSNicholas Bellinger 2695c66ac9dbSNicholas Bellinger return alua_tg_pt_gp_cg; 2696c66ac9dbSNicholas Bellinger } 2697c66ac9dbSNicholas Bellinger 2698c66ac9dbSNicholas Bellinger static void target_core_alua_drop_tg_pt_gp( 2699c66ac9dbSNicholas Bellinger struct config_group *group, 2700c66ac9dbSNicholas Bellinger struct config_item *item) 2701c66ac9dbSNicholas Bellinger { 2702c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2703c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2704c66ac9dbSNicholas Bellinger 27056708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 2706c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s, ID: %hu\n", 2707c66ac9dbSNicholas Bellinger config_item_name(item), tg_pt_gp->tg_pt_gp_id); 27081f6fe7cbSNicholas Bellinger /* 27091f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 27101f6fe7cbSNicholas Bellinger * -> target_core_alua_tg_pt_gp_release(). 27111f6fe7cbSNicholas Bellinger */ 2712c66ac9dbSNicholas Bellinger config_item_put(item); 2713c66ac9dbSNicholas Bellinger } 2714c66ac9dbSNicholas Bellinger 2715c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 2716c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_tg_pt_gp, 2717c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_tg_pt_gp, 2718c66ac9dbSNicholas Bellinger }; 2719c66ac9dbSNicholas Bellinger 2720c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_tg_pt_gps_cit = { 2721c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, 2722c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2723c66ac9dbSNicholas Bellinger }; 2724c66ac9dbSNicholas Bellinger 2725c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2726c66ac9dbSNicholas Bellinger 2727c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_cit */ 2728c66ac9dbSNicholas Bellinger 2729c66ac9dbSNicholas Bellinger /* 2730c66ac9dbSNicholas Bellinger * target_core_alua_cit is a ConfigFS group that lives under 2731c66ac9dbSNicholas Bellinger * /sys/kernel/config/target/core/alua. There are default groups 2732c66ac9dbSNicholas Bellinger * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 2733c66ac9dbSNicholas Bellinger * target_core_alua_cit in target_core_init_configfs() below. 2734c66ac9dbSNicholas Bellinger */ 2735c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_cit = { 2736c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2737c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 2738c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2739c66ac9dbSNicholas Bellinger }; 2740c66ac9dbSNicholas Bellinger 2741c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_cit */ 2742c66ac9dbSNicholas Bellinger 274312d23384SNicholas Bellinger /* Start functions for struct config_item_type target_core_stat_cit */ 274412d23384SNicholas Bellinger 274512d23384SNicholas Bellinger static struct config_group *target_core_stat_mkdir( 274612d23384SNicholas Bellinger struct config_group *group, 274712d23384SNicholas Bellinger const char *name) 274812d23384SNicholas Bellinger { 274912d23384SNicholas Bellinger return ERR_PTR(-ENOSYS); 275012d23384SNicholas Bellinger } 275112d23384SNicholas Bellinger 275212d23384SNicholas Bellinger static void target_core_stat_rmdir( 275312d23384SNicholas Bellinger struct config_group *group, 275412d23384SNicholas Bellinger struct config_item *item) 275512d23384SNicholas Bellinger { 275612d23384SNicholas Bellinger return; 275712d23384SNicholas Bellinger } 275812d23384SNicholas Bellinger 275912d23384SNicholas Bellinger static struct configfs_group_operations target_core_stat_group_ops = { 276012d23384SNicholas Bellinger .make_group = &target_core_stat_mkdir, 276112d23384SNicholas Bellinger .drop_item = &target_core_stat_rmdir, 276212d23384SNicholas Bellinger }; 276312d23384SNicholas Bellinger 276412d23384SNicholas Bellinger static struct config_item_type target_core_stat_cit = { 276512d23384SNicholas Bellinger .ct_group_ops = &target_core_stat_group_ops, 276612d23384SNicholas Bellinger .ct_owner = THIS_MODULE, 276712d23384SNicholas Bellinger }; 276812d23384SNicholas Bellinger 276912d23384SNicholas Bellinger /* End functions for struct config_item_type target_core_stat_cit */ 277012d23384SNicholas Bellinger 2771c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_hba_cit */ 2772c66ac9dbSNicholas Bellinger 2773c66ac9dbSNicholas Bellinger static struct config_group *target_core_make_subdev( 2774c66ac9dbSNicholas Bellinger struct config_group *group, 2775c66ac9dbSNicholas Bellinger const char *name) 2776c66ac9dbSNicholas Bellinger { 2777c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2778c66ac9dbSNicholas Bellinger struct se_subsystem_api *t; 2779c66ac9dbSNicholas Bellinger struct config_item *hba_ci = &group->cg_item; 2780c66ac9dbSNicholas Bellinger struct se_hba *hba = item_to_hba(hba_ci); 27810fd97ccfSChristoph Hellwig struct se_device *dev; 2782c66ac9dbSNicholas Bellinger struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; 278312d23384SNicholas Bellinger struct config_group *dev_stat_grp = NULL; 278412d23384SNicholas Bellinger int errno = -ENOMEM, ret; 2785c66ac9dbSNicholas Bellinger 278612d23384SNicholas Bellinger ret = mutex_lock_interruptible(&hba->hba_access_mutex); 278712d23384SNicholas Bellinger if (ret) 278812d23384SNicholas Bellinger return ERR_PTR(ret); 2789c66ac9dbSNicholas Bellinger /* 2790c66ac9dbSNicholas Bellinger * Locate the struct se_subsystem_api from parent's struct se_hba. 2791c66ac9dbSNicholas Bellinger */ 2792c66ac9dbSNicholas Bellinger t = hba->transport; 2793c66ac9dbSNicholas Bellinger 27940fd97ccfSChristoph Hellwig dev = target_alloc_device(hba, name); 27950fd97ccfSChristoph Hellwig if (!dev) 27960fd97ccfSChristoph Hellwig goto out_unlock; 2797c66ac9dbSNicholas Bellinger 27980fd97ccfSChristoph Hellwig dev_cg = &dev->dev_group; 2799c66ac9dbSNicholas Bellinger 280013f6a914SSebastian Andrzej Siewior dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, 2801c66ac9dbSNicholas Bellinger GFP_KERNEL); 28026708bb27SAndy Grover if (!dev_cg->default_groups) 28030fd97ccfSChristoph Hellwig goto out_free_device; 2804c66ac9dbSNicholas Bellinger 28050fd97ccfSChristoph Hellwig config_group_init_type_name(dev_cg, name, &target_core_dev_cit); 28060fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", 2807c66ac9dbSNicholas Bellinger &target_core_dev_attrib_cit); 28080fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_pr_group, "pr", 2809c66ac9dbSNicholas Bellinger &target_core_dev_pr_cit); 28100fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", 2811c66ac9dbSNicholas Bellinger &target_core_dev_wwn_cit); 28120fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, 2813c66ac9dbSNicholas Bellinger "alua", &target_core_alua_tg_pt_gps_cit); 28140fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_stat_grps.stat_group, 281512d23384SNicholas Bellinger "statistics", &target_core_stat_cit); 281612d23384SNicholas Bellinger 28170fd97ccfSChristoph Hellwig dev_cg->default_groups[0] = &dev->dev_attrib.da_group; 28180fd97ccfSChristoph Hellwig dev_cg->default_groups[1] = &dev->dev_pr_group; 28190fd97ccfSChristoph Hellwig dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; 28200fd97ccfSChristoph Hellwig dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; 28210fd97ccfSChristoph Hellwig dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; 282212d23384SNicholas Bellinger dev_cg->default_groups[5] = NULL; 2823c66ac9dbSNicholas Bellinger /* 282412d23384SNicholas Bellinger * Add core/$HBA/$DEV/alua/default_tg_pt_gp 2825c66ac9dbSNicholas Bellinger */ 28260fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); 28276708bb27SAndy Grover if (!tg_pt_gp) 28280fd97ccfSChristoph Hellwig goto out_free_dev_cg_default_groups; 28290fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 2830c66ac9dbSNicholas Bellinger 28310fd97ccfSChristoph Hellwig tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 283213f6a914SSebastian Andrzej Siewior tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2833c66ac9dbSNicholas Bellinger GFP_KERNEL); 28346708bb27SAndy Grover if (!tg_pt_gp_cg->default_groups) { 28356708bb27SAndy Grover pr_err("Unable to allocate tg_pt_gp_cg->" 2836c66ac9dbSNicholas Bellinger "default_groups\n"); 28370fd97ccfSChristoph Hellwig goto out_free_tg_pt_gp; 2838c66ac9dbSNicholas Bellinger } 2839c66ac9dbSNicholas Bellinger 2840c66ac9dbSNicholas Bellinger config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 2841c66ac9dbSNicholas Bellinger "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 2842c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; 2843c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[1] = NULL; 284412d23384SNicholas Bellinger /* 284512d23384SNicholas Bellinger * Add core/$HBA/$DEV/statistics/ default groups 284612d23384SNicholas Bellinger */ 28470fd97ccfSChristoph Hellwig dev_stat_grp = &dev->dev_stat_grps.stat_group; 284813f6a914SSebastian Andrzej Siewior dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, 284912d23384SNicholas Bellinger GFP_KERNEL); 285012d23384SNicholas Bellinger if (!dev_stat_grp->default_groups) { 28516708bb27SAndy Grover pr_err("Unable to allocate dev_stat_grp->default_groups\n"); 28520fd97ccfSChristoph Hellwig goto out_free_tg_pt_gp_cg_default_groups; 285312d23384SNicholas Bellinger } 28540fd97ccfSChristoph Hellwig target_stat_setup_dev_default_groups(dev); 2855c66ac9dbSNicholas Bellinger 2856c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 28570fd97ccfSChristoph Hellwig return dev_cg; 28580fd97ccfSChristoph Hellwig 28590fd97ccfSChristoph Hellwig out_free_tg_pt_gp_cg_default_groups: 2860c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 28610fd97ccfSChristoph Hellwig out_free_tg_pt_gp: 28620fd97ccfSChristoph Hellwig core_alua_free_tg_pt_gp(tg_pt_gp); 28630fd97ccfSChristoph Hellwig out_free_dev_cg_default_groups: 2864c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 28650fd97ccfSChristoph Hellwig out_free_device: 28660fd97ccfSChristoph Hellwig target_free_device(dev); 28670fd97ccfSChristoph Hellwig out_unlock: 2868c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 286912d23384SNicholas Bellinger return ERR_PTR(errno); 2870c66ac9dbSNicholas Bellinger } 2871c66ac9dbSNicholas Bellinger 2872c66ac9dbSNicholas Bellinger static void target_core_drop_subdev( 2873c66ac9dbSNicholas Bellinger struct config_group *group, 2874c66ac9dbSNicholas Bellinger struct config_item *item) 2875c66ac9dbSNicholas Bellinger { 28760fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 28770fd97ccfSChristoph Hellwig struct se_device *dev = 28780fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 2879c66ac9dbSNicholas Bellinger struct se_hba *hba; 2880c66ac9dbSNicholas Bellinger struct config_item *df_item; 28810fd97ccfSChristoph Hellwig struct config_group *tg_pt_gp_cg, *dev_stat_grp; 28821f6fe7cbSNicholas Bellinger int i; 2883c66ac9dbSNicholas Bellinger 28840fd97ccfSChristoph Hellwig hba = item_to_hba(&dev->se_hba->hba_group.cg_item); 2885c66ac9dbSNicholas Bellinger 28861f6fe7cbSNicholas Bellinger mutex_lock(&hba->hba_access_mutex); 2887c66ac9dbSNicholas Bellinger 28880fd97ccfSChristoph Hellwig dev_stat_grp = &dev->dev_stat_grps.stat_group; 288912d23384SNicholas Bellinger for (i = 0; dev_stat_grp->default_groups[i]; i++) { 289012d23384SNicholas Bellinger df_item = &dev_stat_grp->default_groups[i]->cg_item; 289112d23384SNicholas Bellinger dev_stat_grp->default_groups[i] = NULL; 289212d23384SNicholas Bellinger config_item_put(df_item); 289312d23384SNicholas Bellinger } 289412d23384SNicholas Bellinger kfree(dev_stat_grp->default_groups); 289512d23384SNicholas Bellinger 28960fd97ccfSChristoph Hellwig tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 2897c66ac9dbSNicholas Bellinger for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { 2898c66ac9dbSNicholas Bellinger df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; 2899c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[i] = NULL; 2900c66ac9dbSNicholas Bellinger config_item_put(df_item); 2901c66ac9dbSNicholas Bellinger } 2902c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 29031f6fe7cbSNicholas Bellinger /* 29041f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 29051f6fe7cbSNicholas Bellinger * directly from target_core_alua_tg_pt_gp_release(). 29061f6fe7cbSNicholas Bellinger */ 29070fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = NULL; 2908c66ac9dbSNicholas Bellinger 2909c66ac9dbSNicholas Bellinger for (i = 0; dev_cg->default_groups[i]; i++) { 2910c66ac9dbSNicholas Bellinger df_item = &dev_cg->default_groups[i]->cg_item; 2911c66ac9dbSNicholas Bellinger dev_cg->default_groups[i] = NULL; 2912c66ac9dbSNicholas Bellinger config_item_put(df_item); 2913c66ac9dbSNicholas Bellinger } 29141f6fe7cbSNicholas Bellinger /* 29150fd97ccfSChristoph Hellwig * se_dev is released from target_core_dev_item_ops->release() 29161f6fe7cbSNicholas Bellinger */ 2917c66ac9dbSNicholas Bellinger config_item_put(item); 2918c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 2919c66ac9dbSNicholas Bellinger } 2920c66ac9dbSNicholas Bellinger 2921c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_hba_group_ops = { 2922c66ac9dbSNicholas Bellinger .make_group = target_core_make_subdev, 2923c66ac9dbSNicholas Bellinger .drop_item = target_core_drop_subdev, 2924c66ac9dbSNicholas Bellinger }; 2925c66ac9dbSNicholas Bellinger 2926c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); 2927c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR(_name, _mode) \ 2928c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2929c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2930c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2931c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name, \ 2932c66ac9dbSNicholas Bellinger target_core_hba_store_attr_##_name); 2933c66ac9dbSNicholas Bellinger 2934c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR_RO(_name) \ 2935c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2936c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2937c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2938c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name); 2939c66ac9dbSNicholas Bellinger 2940c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_info( 2941c66ac9dbSNicholas Bellinger struct se_hba *hba, 2942c66ac9dbSNicholas Bellinger char *page) 2943c66ac9dbSNicholas Bellinger { 2944c66ac9dbSNicholas Bellinger return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 2945c66ac9dbSNicholas Bellinger hba->hba_id, hba->transport->name, 2946c66ac9dbSNicholas Bellinger TARGET_CORE_CONFIGFS_VERSION); 2947c66ac9dbSNicholas Bellinger } 2948c66ac9dbSNicholas Bellinger 2949c66ac9dbSNicholas Bellinger SE_HBA_ATTR_RO(hba_info); 2950c66ac9dbSNicholas Bellinger 2951c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, 2952c66ac9dbSNicholas Bellinger char *page) 2953c66ac9dbSNicholas Bellinger { 2954c66ac9dbSNicholas Bellinger int hba_mode = 0; 2955c66ac9dbSNicholas Bellinger 2956c66ac9dbSNicholas Bellinger if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 2957c66ac9dbSNicholas Bellinger hba_mode = 1; 2958c66ac9dbSNicholas Bellinger 2959c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", hba_mode); 2960c66ac9dbSNicholas Bellinger } 2961c66ac9dbSNicholas Bellinger 2962c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, 2963c66ac9dbSNicholas Bellinger const char *page, size_t count) 2964c66ac9dbSNicholas Bellinger { 2965c66ac9dbSNicholas Bellinger struct se_subsystem_api *transport = hba->transport; 2966c66ac9dbSNicholas Bellinger unsigned long mode_flag; 2967c66ac9dbSNicholas Bellinger int ret; 2968c66ac9dbSNicholas Bellinger 2969c66ac9dbSNicholas Bellinger if (transport->pmode_enable_hba == NULL) 2970c66ac9dbSNicholas Bellinger return -EINVAL; 2971c66ac9dbSNicholas Bellinger 297257103d7fSJingoo Han ret = kstrtoul(page, 0, &mode_flag); 2973c66ac9dbSNicholas Bellinger if (ret < 0) { 29746708bb27SAndy Grover pr_err("Unable to extract hba mode flag: %d\n", ret); 297557103d7fSJingoo Han return ret; 2976c66ac9dbSNicholas Bellinger } 2977c66ac9dbSNicholas Bellinger 29780fd97ccfSChristoph Hellwig if (hba->dev_count) { 29796708bb27SAndy Grover pr_err("Unable to set hba_mode with active devices\n"); 2980c66ac9dbSNicholas Bellinger return -EINVAL; 2981c66ac9dbSNicholas Bellinger } 2982c66ac9dbSNicholas Bellinger 2983c66ac9dbSNicholas Bellinger ret = transport->pmode_enable_hba(hba, mode_flag); 2984c66ac9dbSNicholas Bellinger if (ret < 0) 2985c66ac9dbSNicholas Bellinger return -EINVAL; 2986c66ac9dbSNicholas Bellinger if (ret > 0) 2987c66ac9dbSNicholas Bellinger hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 2988c66ac9dbSNicholas Bellinger else if (ret == 0) 2989c66ac9dbSNicholas Bellinger hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 2990c66ac9dbSNicholas Bellinger 2991c66ac9dbSNicholas Bellinger return count; 2992c66ac9dbSNicholas Bellinger } 2993c66ac9dbSNicholas Bellinger 2994c66ac9dbSNicholas Bellinger SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); 2995c66ac9dbSNicholas Bellinger 2996c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); 2997c66ac9dbSNicholas Bellinger 29981f6fe7cbSNicholas Bellinger static void target_core_hba_release(struct config_item *item) 29991f6fe7cbSNicholas Bellinger { 30001f6fe7cbSNicholas Bellinger struct se_hba *hba = container_of(to_config_group(item), 30011f6fe7cbSNicholas Bellinger struct se_hba, hba_group); 30021f6fe7cbSNicholas Bellinger core_delete_hba(hba); 30031f6fe7cbSNicholas Bellinger } 30041f6fe7cbSNicholas Bellinger 3005c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_hba_attrs[] = { 3006c66ac9dbSNicholas Bellinger &target_core_hba_hba_info.attr, 3007c66ac9dbSNicholas Bellinger &target_core_hba_hba_mode.attr, 3008c66ac9dbSNicholas Bellinger NULL, 3009c66ac9dbSNicholas Bellinger }; 3010c66ac9dbSNicholas Bellinger 3011c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_hba_item_ops = { 30121f6fe7cbSNicholas Bellinger .release = target_core_hba_release, 3013c66ac9dbSNicholas Bellinger .show_attribute = target_core_hba_attr_show, 3014c66ac9dbSNicholas Bellinger .store_attribute = target_core_hba_attr_store, 3015c66ac9dbSNicholas Bellinger }; 3016c66ac9dbSNicholas Bellinger 3017c66ac9dbSNicholas Bellinger static struct config_item_type target_core_hba_cit = { 3018c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_hba_item_ops, 3019c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_hba_group_ops, 3020c66ac9dbSNicholas Bellinger .ct_attrs = target_core_hba_attrs, 3021c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3022c66ac9dbSNicholas Bellinger }; 3023c66ac9dbSNicholas Bellinger 3024c66ac9dbSNicholas Bellinger static struct config_group *target_core_call_addhbatotarget( 3025c66ac9dbSNicholas Bellinger struct config_group *group, 3026c66ac9dbSNicholas Bellinger const char *name) 3027c66ac9dbSNicholas Bellinger { 3028c66ac9dbSNicholas Bellinger char *se_plugin_str, *str, *str2; 3029c66ac9dbSNicholas Bellinger struct se_hba *hba; 3030c66ac9dbSNicholas Bellinger char buf[TARGET_CORE_NAME_MAX_LEN]; 3031c66ac9dbSNicholas Bellinger unsigned long plugin_dep_id = 0; 3032c66ac9dbSNicholas Bellinger int ret; 3033c66ac9dbSNicholas Bellinger 3034c66ac9dbSNicholas Bellinger memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); 303560d645a4SDan Carpenter if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 30366708bb27SAndy Grover pr_err("Passed *name strlen(): %d exceeds" 3037c66ac9dbSNicholas Bellinger " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 3038c66ac9dbSNicholas Bellinger TARGET_CORE_NAME_MAX_LEN); 3039c66ac9dbSNicholas Bellinger return ERR_PTR(-ENAMETOOLONG); 3040c66ac9dbSNicholas Bellinger } 3041c66ac9dbSNicholas Bellinger snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 3042c66ac9dbSNicholas Bellinger 3043c66ac9dbSNicholas Bellinger str = strstr(buf, "_"); 30446708bb27SAndy Grover if (!str) { 30456708bb27SAndy Grover pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 3046c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 3047c66ac9dbSNicholas Bellinger } 3048c66ac9dbSNicholas Bellinger se_plugin_str = buf; 3049c66ac9dbSNicholas Bellinger /* 3050c66ac9dbSNicholas Bellinger * Special case for subsystem plugins that have "_" in their names. 3051c66ac9dbSNicholas Bellinger * Namely rd_direct and rd_mcp.. 3052c66ac9dbSNicholas Bellinger */ 3053c66ac9dbSNicholas Bellinger str2 = strstr(str+1, "_"); 30546708bb27SAndy Grover if (str2) { 3055c66ac9dbSNicholas Bellinger *str2 = '\0'; /* Terminate for *se_plugin_str */ 3056c66ac9dbSNicholas Bellinger str2++; /* Skip to start of plugin dependent ID */ 3057c66ac9dbSNicholas Bellinger str = str2; 3058c66ac9dbSNicholas Bellinger } else { 3059c66ac9dbSNicholas Bellinger *str = '\0'; /* Terminate for *se_plugin_str */ 3060c66ac9dbSNicholas Bellinger str++; /* Skip to start of plugin dependent ID */ 3061c66ac9dbSNicholas Bellinger } 3062c66ac9dbSNicholas Bellinger 306357103d7fSJingoo Han ret = kstrtoul(str, 0, &plugin_dep_id); 3064c66ac9dbSNicholas Bellinger if (ret < 0) { 306557103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 3066c66ac9dbSNicholas Bellinger " plugin_dep_id\n", ret); 306757103d7fSJingoo Han return ERR_PTR(ret); 3068c66ac9dbSNicholas Bellinger } 3069c66ac9dbSNicholas Bellinger /* 3070c66ac9dbSNicholas Bellinger * Load up TCM subsystem plugins if they have not already been loaded. 3071c66ac9dbSNicholas Bellinger */ 3072dbc5623eSNicholas Bellinger transport_subsystem_check_init(); 3073c66ac9dbSNicholas Bellinger 3074c66ac9dbSNicholas Bellinger hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 3075c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 3076c66ac9dbSNicholas Bellinger return ERR_CAST(hba); 3077c66ac9dbSNicholas Bellinger 3078c66ac9dbSNicholas Bellinger config_group_init_type_name(&hba->hba_group, name, 3079c66ac9dbSNicholas Bellinger &target_core_hba_cit); 3080c66ac9dbSNicholas Bellinger 3081c66ac9dbSNicholas Bellinger return &hba->hba_group; 3082c66ac9dbSNicholas Bellinger } 3083c66ac9dbSNicholas Bellinger 3084c66ac9dbSNicholas Bellinger static void target_core_call_delhbafromtarget( 3085c66ac9dbSNicholas Bellinger struct config_group *group, 3086c66ac9dbSNicholas Bellinger struct config_item *item) 3087c66ac9dbSNicholas Bellinger { 30881f6fe7cbSNicholas Bellinger /* 30891f6fe7cbSNicholas Bellinger * core_delete_hba() is called from target_core_hba_item_ops->release() 30901f6fe7cbSNicholas Bellinger * -> target_core_hba_release() 30911f6fe7cbSNicholas Bellinger */ 3092c66ac9dbSNicholas Bellinger config_item_put(item); 3093c66ac9dbSNicholas Bellinger } 3094c66ac9dbSNicholas Bellinger 3095c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_group_ops = { 3096c66ac9dbSNicholas Bellinger .make_group = target_core_call_addhbatotarget, 3097c66ac9dbSNicholas Bellinger .drop_item = target_core_call_delhbafromtarget, 3098c66ac9dbSNicholas Bellinger }; 3099c66ac9dbSNicholas Bellinger 3100c66ac9dbSNicholas Bellinger static struct config_item_type target_core_cit = { 3101c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3102c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_group_ops, 3103c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3104c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3105c66ac9dbSNicholas Bellinger }; 3106c66ac9dbSNicholas Bellinger 3107c66ac9dbSNicholas Bellinger /* Stop functions for struct config_item_type target_core_hba_cit */ 3108c66ac9dbSNicholas Bellinger 310954550fabSAxel Lin static int __init target_core_init_configfs(void) 3110c66ac9dbSNicholas Bellinger { 3111c66ac9dbSNicholas Bellinger struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; 3112c66ac9dbSNicholas Bellinger struct config_group *lu_gp_cg = NULL; 3113c66ac9dbSNicholas Bellinger struct configfs_subsystem *subsys; 3114c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 3115c66ac9dbSNicholas Bellinger int ret; 3116c66ac9dbSNicholas Bellinger 31176708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 3118c66ac9dbSNicholas Bellinger " Engine: %s on %s/%s on "UTS_RELEASE"\n", 3119c66ac9dbSNicholas Bellinger TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 3120c66ac9dbSNicholas Bellinger 3121c66ac9dbSNicholas Bellinger subsys = target_core_subsystem[0]; 3122c66ac9dbSNicholas Bellinger config_group_init(&subsys->su_group); 3123c66ac9dbSNicholas Bellinger mutex_init(&subsys->su_mutex); 3124c66ac9dbSNicholas Bellinger 3125e3d6f909SAndy Grover ret = init_se_kmem_caches(); 3126c66ac9dbSNicholas Bellinger if (ret < 0) 3127e3d6f909SAndy Grover return ret; 3128c66ac9dbSNicholas Bellinger /* 3129c66ac9dbSNicholas Bellinger * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 3130c66ac9dbSNicholas Bellinger * and ALUA Logical Unit Group and Target Port Group infrastructure. 3131c66ac9dbSNicholas Bellinger */ 3132c66ac9dbSNicholas Bellinger target_cg = &subsys->su_group; 3133ab6dae82SAndy Grover target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3134c66ac9dbSNicholas Bellinger GFP_KERNEL); 31356708bb27SAndy Grover if (!target_cg->default_groups) { 31366708bb27SAndy Grover pr_err("Unable to allocate target_cg->default_groups\n"); 313737bb7899SPeter Senna Tschudin ret = -ENOMEM; 3138c66ac9dbSNicholas Bellinger goto out_global; 3139c66ac9dbSNicholas Bellinger } 3140c66ac9dbSNicholas Bellinger 3141e3d6f909SAndy Grover config_group_init_type_name(&target_core_hbagroup, 3142c66ac9dbSNicholas Bellinger "core", &target_core_cit); 3143e3d6f909SAndy Grover target_cg->default_groups[0] = &target_core_hbagroup; 3144c66ac9dbSNicholas Bellinger target_cg->default_groups[1] = NULL; 3145c66ac9dbSNicholas Bellinger /* 3146c66ac9dbSNicholas Bellinger * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 3147c66ac9dbSNicholas Bellinger */ 3148e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 314913f6a914SSebastian Andrzej Siewior hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3150c66ac9dbSNicholas Bellinger GFP_KERNEL); 31516708bb27SAndy Grover if (!hba_cg->default_groups) { 31526708bb27SAndy Grover pr_err("Unable to allocate hba_cg->default_groups\n"); 315337bb7899SPeter Senna Tschudin ret = -ENOMEM; 3154c66ac9dbSNicholas Bellinger goto out_global; 3155c66ac9dbSNicholas Bellinger } 3156e3d6f909SAndy Grover config_group_init_type_name(&alua_group, 3157c66ac9dbSNicholas Bellinger "alua", &target_core_alua_cit); 3158e3d6f909SAndy Grover hba_cg->default_groups[0] = &alua_group; 3159c66ac9dbSNicholas Bellinger hba_cg->default_groups[1] = NULL; 3160c66ac9dbSNicholas Bellinger /* 3161c66ac9dbSNicholas Bellinger * Add ALUA Logical Unit Group and Target Port Group ConfigFS 3162c66ac9dbSNicholas Bellinger * groups under /sys/kernel/config/target/core/alua/ 3163c66ac9dbSNicholas Bellinger */ 3164e3d6f909SAndy Grover alua_cg = &alua_group; 316513f6a914SSebastian Andrzej Siewior alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3166c66ac9dbSNicholas Bellinger GFP_KERNEL); 31676708bb27SAndy Grover if (!alua_cg->default_groups) { 31686708bb27SAndy Grover pr_err("Unable to allocate alua_cg->default_groups\n"); 316937bb7899SPeter Senna Tschudin ret = -ENOMEM; 3170c66ac9dbSNicholas Bellinger goto out_global; 3171c66ac9dbSNicholas Bellinger } 3172c66ac9dbSNicholas Bellinger 3173e3d6f909SAndy Grover config_group_init_type_name(&alua_lu_gps_group, 3174c66ac9dbSNicholas Bellinger "lu_gps", &target_core_alua_lu_gps_cit); 3175e3d6f909SAndy Grover alua_cg->default_groups[0] = &alua_lu_gps_group; 3176c66ac9dbSNicholas Bellinger alua_cg->default_groups[1] = NULL; 3177c66ac9dbSNicholas Bellinger /* 3178c66ac9dbSNicholas Bellinger * Add core/alua/lu_gps/default_lu_gp 3179c66ac9dbSNicholas Bellinger */ 3180c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 318137bb7899SPeter Senna Tschudin if (IS_ERR(lu_gp)) { 318237bb7899SPeter Senna Tschudin ret = -ENOMEM; 3183c66ac9dbSNicholas Bellinger goto out_global; 318437bb7899SPeter Senna Tschudin } 3185c66ac9dbSNicholas Bellinger 3186e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 318713f6a914SSebastian Andrzej Siewior lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3188c66ac9dbSNicholas Bellinger GFP_KERNEL); 31896708bb27SAndy Grover if (!lu_gp_cg->default_groups) { 31906708bb27SAndy Grover pr_err("Unable to allocate lu_gp_cg->default_groups\n"); 319137bb7899SPeter Senna Tschudin ret = -ENOMEM; 3192c66ac9dbSNicholas Bellinger goto out_global; 3193c66ac9dbSNicholas Bellinger } 3194c66ac9dbSNicholas Bellinger 3195c66ac9dbSNicholas Bellinger config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 3196c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 3197c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; 3198c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[1] = NULL; 3199e3d6f909SAndy Grover default_lu_gp = lu_gp; 3200c66ac9dbSNicholas Bellinger /* 3201c66ac9dbSNicholas Bellinger * Register the target_core_mod subsystem with configfs. 3202c66ac9dbSNicholas Bellinger */ 3203c66ac9dbSNicholas Bellinger ret = configfs_register_subsystem(subsys); 3204c66ac9dbSNicholas Bellinger if (ret < 0) { 32056708bb27SAndy Grover pr_err("Error %d while registering subsystem %s\n", 3206c66ac9dbSNicholas Bellinger ret, subsys->su_group.cg_item.ci_namebuf); 3207c66ac9dbSNicholas Bellinger goto out_global; 3208c66ac9dbSNicholas Bellinger } 32096708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 3210c66ac9dbSNicholas Bellinger " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" 3211c66ac9dbSNicholas Bellinger " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 3212c66ac9dbSNicholas Bellinger /* 3213c66ac9dbSNicholas Bellinger * Register built-in RAMDISK subsystem logic for virtual LUN 0 3214c66ac9dbSNicholas Bellinger */ 3215c66ac9dbSNicholas Bellinger ret = rd_module_init(); 3216c66ac9dbSNicholas Bellinger if (ret < 0) 3217c66ac9dbSNicholas Bellinger goto out; 3218c66ac9dbSNicholas Bellinger 32190d0f9dfbSRoland Dreier ret = core_dev_setup_virtual_lun0(); 32200d0f9dfbSRoland Dreier if (ret < 0) 3221c66ac9dbSNicholas Bellinger goto out; 3222c66ac9dbSNicholas Bellinger 3223f99715acSNicholas Bellinger ret = target_xcopy_setup_pt(); 3224f99715acSNicholas Bellinger if (ret < 0) 3225f99715acSNicholas Bellinger goto out; 3226f99715acSNicholas Bellinger 3227c66ac9dbSNicholas Bellinger return 0; 3228c66ac9dbSNicholas Bellinger 3229c66ac9dbSNicholas Bellinger out: 3230c66ac9dbSNicholas Bellinger configfs_unregister_subsystem(subsys); 3231c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3232c66ac9dbSNicholas Bellinger rd_module_exit(); 3233c66ac9dbSNicholas Bellinger out_global: 3234e3d6f909SAndy Grover if (default_lu_gp) { 3235e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3236e3d6f909SAndy Grover default_lu_gp = NULL; 3237c66ac9dbSNicholas Bellinger } 3238c66ac9dbSNicholas Bellinger if (lu_gp_cg) 3239c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 3240c66ac9dbSNicholas Bellinger if (alua_cg) 3241c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 3242c66ac9dbSNicholas Bellinger if (hba_cg) 3243c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 3244c66ac9dbSNicholas Bellinger kfree(target_cg->default_groups); 3245e3d6f909SAndy Grover release_se_kmem_caches(); 3246e3d6f909SAndy Grover return ret; 3247c66ac9dbSNicholas Bellinger } 3248c66ac9dbSNicholas Bellinger 324954550fabSAxel Lin static void __exit target_core_exit_configfs(void) 3250c66ac9dbSNicholas Bellinger { 3251c66ac9dbSNicholas Bellinger struct configfs_subsystem *subsys; 3252c66ac9dbSNicholas Bellinger struct config_group *hba_cg, *alua_cg, *lu_gp_cg; 3253c66ac9dbSNicholas Bellinger struct config_item *item; 3254c66ac9dbSNicholas Bellinger int i; 3255c66ac9dbSNicholas Bellinger 3256c66ac9dbSNicholas Bellinger subsys = target_core_subsystem[0]; 3257c66ac9dbSNicholas Bellinger 3258e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 3259c66ac9dbSNicholas Bellinger for (i = 0; lu_gp_cg->default_groups[i]; i++) { 3260c66ac9dbSNicholas Bellinger item = &lu_gp_cg->default_groups[i]->cg_item; 3261c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[i] = NULL; 3262c66ac9dbSNicholas Bellinger config_item_put(item); 3263c66ac9dbSNicholas Bellinger } 3264c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 32657c2bf6e9SNicholas Bellinger lu_gp_cg->default_groups = NULL; 3266c66ac9dbSNicholas Bellinger 3267e3d6f909SAndy Grover alua_cg = &alua_group; 3268c66ac9dbSNicholas Bellinger for (i = 0; alua_cg->default_groups[i]; i++) { 3269c66ac9dbSNicholas Bellinger item = &alua_cg->default_groups[i]->cg_item; 3270c66ac9dbSNicholas Bellinger alua_cg->default_groups[i] = NULL; 3271c66ac9dbSNicholas Bellinger config_item_put(item); 3272c66ac9dbSNicholas Bellinger } 3273c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 32747c2bf6e9SNicholas Bellinger alua_cg->default_groups = NULL; 3275c66ac9dbSNicholas Bellinger 3276e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 3277c66ac9dbSNicholas Bellinger for (i = 0; hba_cg->default_groups[i]; i++) { 3278c66ac9dbSNicholas Bellinger item = &hba_cg->default_groups[i]->cg_item; 3279c66ac9dbSNicholas Bellinger hba_cg->default_groups[i] = NULL; 3280c66ac9dbSNicholas Bellinger config_item_put(item); 3281c66ac9dbSNicholas Bellinger } 3282c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 32837c2bf6e9SNicholas Bellinger hba_cg->default_groups = NULL; 32847c2bf6e9SNicholas Bellinger /* 32857c2bf6e9SNicholas Bellinger * We expect subsys->su_group.default_groups to be released 32867c2bf6e9SNicholas Bellinger * by configfs subsystem provider logic.. 32877c2bf6e9SNicholas Bellinger */ 32887c2bf6e9SNicholas Bellinger configfs_unregister_subsystem(subsys); 3289c66ac9dbSNicholas Bellinger kfree(subsys->su_group.default_groups); 3290c66ac9dbSNicholas Bellinger 3291e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3292e3d6f909SAndy Grover default_lu_gp = NULL; 32937c2bf6e9SNicholas Bellinger 32946708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3295c66ac9dbSNicholas Bellinger " Infrastructure\n"); 3296c66ac9dbSNicholas Bellinger 3297c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3298c66ac9dbSNicholas Bellinger rd_module_exit(); 3299f99715acSNicholas Bellinger target_xcopy_release_pt(); 3300e3d6f909SAndy Grover release_se_kmem_caches(); 3301c66ac9dbSNicholas Bellinger } 3302c66ac9dbSNicholas Bellinger 3303c66ac9dbSNicholas Bellinger MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3304c66ac9dbSNicholas Bellinger MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3305c66ac9dbSNicholas Bellinger MODULE_LICENSE("GPL"); 3306c66ac9dbSNicholas Bellinger 3307c66ac9dbSNicholas Bellinger module_init(target_core_init_configfs); 3308c66ac9dbSNicholas Bellinger module_exit(target_core_exit_configfs); 3309