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 * 612d23384SNicholas Bellinger * Copyright (c) 2008-2011 Rising Tide Systems 712d23384SNicholas Bellinger * Copyright (c) 2008-2011 Linux-iSCSI.org 8c66ac9dbSNicholas Bellinger * 9c66ac9dbSNicholas Bellinger * Nicholas A. Bellinger <nab@kernel.org> 10c66ac9dbSNicholas Bellinger * 11c66ac9dbSNicholas Bellinger * based on configfs Copyright (C) 2005 Oracle. All rights reserved. 12c66ac9dbSNicholas Bellinger * 13c66ac9dbSNicholas Bellinger * This program is free software; you can redistribute it and/or modify 14c66ac9dbSNicholas Bellinger * it under the terms of the GNU General Public License as published by 15c66ac9dbSNicholas Bellinger * the Free Software Foundation; either version 2 of the License, or 16c66ac9dbSNicholas Bellinger * (at your option) any later version. 17c66ac9dbSNicholas Bellinger * 18c66ac9dbSNicholas Bellinger * This program is distributed in the hope that it will be useful, 19c66ac9dbSNicholas Bellinger * but WITHOUT ANY WARRANTY; without even the implied warranty of 20c66ac9dbSNicholas Bellinger * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21c66ac9dbSNicholas Bellinger * GNU General Public License for more details. 22c66ac9dbSNicholas Bellinger ****************************************************************************/ 23c66ac9dbSNicholas Bellinger 24c66ac9dbSNicholas Bellinger #include <linux/module.h> 25c66ac9dbSNicholas Bellinger #include <linux/moduleparam.h> 26c66ac9dbSNicholas Bellinger #include <generated/utsrelease.h> 27c66ac9dbSNicholas Bellinger #include <linux/utsname.h> 28c66ac9dbSNicholas Bellinger #include <linux/init.h> 29c66ac9dbSNicholas Bellinger #include <linux/fs.h> 30c66ac9dbSNicholas Bellinger #include <linux/namei.h> 31c66ac9dbSNicholas Bellinger #include <linux/slab.h> 32c66ac9dbSNicholas Bellinger #include <linux/types.h> 33c66ac9dbSNicholas Bellinger #include <linux/delay.h> 34c66ac9dbSNicholas Bellinger #include <linux/unistd.h> 35c66ac9dbSNicholas Bellinger #include <linux/string.h> 36c66ac9dbSNicholas Bellinger #include <linux/parser.h> 37c66ac9dbSNicholas Bellinger #include <linux/syscalls.h> 38c66ac9dbSNicholas Bellinger #include <linux/configfs.h> 39e3d6f909SAndy Grover #include <linux/spinlock.h> 40c66ac9dbSNicholas Bellinger 41c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 42c4795fb2SChristoph Hellwig #include <target/target_core_backend.h> 43c4795fb2SChristoph Hellwig #include <target/target_core_fabric.h> 44c66ac9dbSNicholas Bellinger #include <target/target_core_fabric_configfs.h> 45c66ac9dbSNicholas Bellinger #include <target/target_core_configfs.h> 46c66ac9dbSNicholas Bellinger #include <target/configfs_macros.h> 47c66ac9dbSNicholas Bellinger 48e26d99aeSChristoph Hellwig #include "target_core_internal.h" 49c66ac9dbSNicholas Bellinger #include "target_core_alua.h" 50c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 51c66ac9dbSNicholas Bellinger #include "target_core_rd.h" 52c66ac9dbSNicholas Bellinger 53e3d6f909SAndy Grover extern struct t10_alua_lu_gp *default_lu_gp; 54e3d6f909SAndy Grover 55c66ac9dbSNicholas Bellinger static struct list_head g_tf_list; 56c66ac9dbSNicholas Bellinger static struct 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", 180c66ac9dbSNicholas Bellinger &TF_CIT_TMPL(tf)->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, 187c66ac9dbSNicholas Bellinger &TF_CIT_TMPL(tf)->tfc_wwn_cit); 188c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 189c66ac9dbSNicholas Bellinger &TF_CIT_TMPL(tf)->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 272c66ac9dbSNicholas Bellinger static 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->stop_session) { 4256708bb27SAndy Grover pr_err("Missing tfo->stop_session()\n"); 426c66ac9dbSNicholas Bellinger return -EINVAL; 427c66ac9dbSNicholas Bellinger } 4286708bb27SAndy Grover if (!tfo->fall_back_to_erl0) { 4296708bb27SAndy Grover pr_err("Missing tfo->fall_back_to_erl0()\n"); 430c66ac9dbSNicholas Bellinger return -EINVAL; 431c66ac9dbSNicholas Bellinger } 4326708bb27SAndy Grover if (!tfo->sess_logged_in) { 4336708bb27SAndy Grover pr_err("Missing tfo->sess_logged_in()\n"); 434c66ac9dbSNicholas Bellinger return -EINVAL; 435c66ac9dbSNicholas Bellinger } 4366708bb27SAndy Grover if (!tfo->sess_get_index) { 4376708bb27SAndy Grover pr_err("Missing tfo->sess_get_index()\n"); 438c66ac9dbSNicholas Bellinger return -EINVAL; 439c66ac9dbSNicholas Bellinger } 4406708bb27SAndy Grover if (!tfo->write_pending) { 4416708bb27SAndy Grover pr_err("Missing tfo->write_pending()\n"); 442c66ac9dbSNicholas Bellinger return -EINVAL; 443c66ac9dbSNicholas Bellinger } 4446708bb27SAndy Grover if (!tfo->write_pending_status) { 4456708bb27SAndy Grover pr_err("Missing tfo->write_pending_status()\n"); 446c66ac9dbSNicholas Bellinger return -EINVAL; 447c66ac9dbSNicholas Bellinger } 4486708bb27SAndy Grover if (!tfo->set_default_node_attributes) { 4496708bb27SAndy Grover pr_err("Missing tfo->set_default_node_attributes()\n"); 450c66ac9dbSNicholas Bellinger return -EINVAL; 451c66ac9dbSNicholas Bellinger } 4526708bb27SAndy Grover if (!tfo->get_task_tag) { 4536708bb27SAndy Grover pr_err("Missing tfo->get_task_tag()\n"); 454c66ac9dbSNicholas Bellinger return -EINVAL; 455c66ac9dbSNicholas Bellinger } 4566708bb27SAndy Grover if (!tfo->get_cmd_state) { 4576708bb27SAndy Grover pr_err("Missing tfo->get_cmd_state()\n"); 458c66ac9dbSNicholas Bellinger return -EINVAL; 459c66ac9dbSNicholas Bellinger } 4606708bb27SAndy Grover if (!tfo->queue_data_in) { 4616708bb27SAndy Grover pr_err("Missing tfo->queue_data_in()\n"); 462c66ac9dbSNicholas Bellinger return -EINVAL; 463c66ac9dbSNicholas Bellinger } 4646708bb27SAndy Grover if (!tfo->queue_status) { 4656708bb27SAndy Grover pr_err("Missing tfo->queue_status()\n"); 466c66ac9dbSNicholas Bellinger return -EINVAL; 467c66ac9dbSNicholas Bellinger } 4686708bb27SAndy Grover if (!tfo->queue_tm_rsp) { 4696708bb27SAndy Grover pr_err("Missing tfo->queue_tm_rsp()\n"); 470c66ac9dbSNicholas Bellinger return -EINVAL; 471c66ac9dbSNicholas Bellinger } 4726708bb27SAndy Grover if (!tfo->set_fabric_sense_len) { 4736708bb27SAndy Grover pr_err("Missing tfo->set_fabric_sense_len()\n"); 474c66ac9dbSNicholas Bellinger return -EINVAL; 475c66ac9dbSNicholas Bellinger } 4766708bb27SAndy Grover if (!tfo->get_fabric_sense_len) { 4776708bb27SAndy Grover pr_err("Missing tfo->get_fabric_sense_len()\n"); 478c66ac9dbSNicholas Bellinger return -EINVAL; 479c66ac9dbSNicholas Bellinger } 4806708bb27SAndy Grover if (!tfo->is_state_remove) { 4816708bb27SAndy Grover pr_err("Missing tfo->is_state_remove()\n"); 482c66ac9dbSNicholas Bellinger return -EINVAL; 483c66ac9dbSNicholas Bellinger } 484c66ac9dbSNicholas Bellinger /* 485c66ac9dbSNicholas Bellinger * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 486c66ac9dbSNicholas Bellinger * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 487c66ac9dbSNicholas Bellinger * target_core_fabric_configfs.c WWN+TPG group context code. 488c66ac9dbSNicholas Bellinger */ 4896708bb27SAndy Grover if (!tfo->fabric_make_wwn) { 4906708bb27SAndy Grover pr_err("Missing tfo->fabric_make_wwn()\n"); 491c66ac9dbSNicholas Bellinger return -EINVAL; 492c66ac9dbSNicholas Bellinger } 4936708bb27SAndy Grover if (!tfo->fabric_drop_wwn) { 4946708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_wwn()\n"); 495c66ac9dbSNicholas Bellinger return -EINVAL; 496c66ac9dbSNicholas Bellinger } 4976708bb27SAndy Grover if (!tfo->fabric_make_tpg) { 4986708bb27SAndy Grover pr_err("Missing tfo->fabric_make_tpg()\n"); 499c66ac9dbSNicholas Bellinger return -EINVAL; 500c66ac9dbSNicholas Bellinger } 5016708bb27SAndy Grover if (!tfo->fabric_drop_tpg) { 5026708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_tpg()\n"); 503c66ac9dbSNicholas Bellinger return -EINVAL; 504c66ac9dbSNicholas Bellinger } 505c66ac9dbSNicholas Bellinger 506c66ac9dbSNicholas Bellinger return 0; 507c66ac9dbSNicholas Bellinger } 508c66ac9dbSNicholas Bellinger 509c66ac9dbSNicholas Bellinger /* 510c66ac9dbSNicholas Bellinger * Called 2nd from fabric module with returned parameter of 511c66ac9dbSNicholas Bellinger * struct target_fabric_configfs * from target_fabric_configfs_init(). 512c66ac9dbSNicholas Bellinger * 513c66ac9dbSNicholas Bellinger * Upon a successful registration, the new fabric's struct config_item is 514c66ac9dbSNicholas Bellinger * return. Also, a pointer to this struct is set in the passed 515c66ac9dbSNicholas Bellinger * struct target_fabric_configfs. 516c66ac9dbSNicholas Bellinger */ 517c66ac9dbSNicholas Bellinger int target_fabric_configfs_register( 518c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 519c66ac9dbSNicholas Bellinger { 520c66ac9dbSNicholas Bellinger int ret; 521c66ac9dbSNicholas Bellinger 5226708bb27SAndy Grover if (!tf) { 5236708bb27SAndy Grover pr_err("Unable to locate target_fabric_configfs" 524c66ac9dbSNicholas Bellinger " pointer\n"); 525c66ac9dbSNicholas Bellinger return -EINVAL; 526c66ac9dbSNicholas Bellinger } 5276708bb27SAndy Grover if (!tf->tf_subsys) { 5286708bb27SAndy Grover pr_err("Unable to target struct config_subsystem" 529c66ac9dbSNicholas Bellinger " pointer\n"); 530c66ac9dbSNicholas Bellinger return -EINVAL; 531c66ac9dbSNicholas Bellinger } 532c66ac9dbSNicholas Bellinger ret = target_fabric_tf_ops_check(tf); 533c66ac9dbSNicholas Bellinger if (ret < 0) 534c66ac9dbSNicholas Bellinger return ret; 535c66ac9dbSNicholas Bellinger 5366708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" 537c66ac9dbSNicholas Bellinger ">>>>>>>>>>\n"); 538c66ac9dbSNicholas Bellinger return 0; 539c66ac9dbSNicholas Bellinger } 540c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_register); 541c66ac9dbSNicholas Bellinger 542c66ac9dbSNicholas Bellinger void target_fabric_configfs_deregister( 543c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 544c66ac9dbSNicholas Bellinger { 545c66ac9dbSNicholas Bellinger struct configfs_subsystem *su; 546c66ac9dbSNicholas Bellinger 5476708bb27SAndy Grover if (!tf) { 5486708bb27SAndy Grover pr_err("Unable to locate passed target_fabric_" 549c66ac9dbSNicholas Bellinger "configfs\n"); 550c66ac9dbSNicholas Bellinger return; 551c66ac9dbSNicholas Bellinger } 552c66ac9dbSNicholas Bellinger su = tf->tf_subsys; 5536708bb27SAndy Grover if (!su) { 5546708bb27SAndy Grover pr_err("Unable to locate passed tf->tf_subsys" 555c66ac9dbSNicholas Bellinger " pointer\n"); 556c66ac9dbSNicholas Bellinger return; 557c66ac9dbSNicholas Bellinger } 5586708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" 559c66ac9dbSNicholas Bellinger ">>>>>>>>>>>>\n"); 560c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 561c66ac9dbSNicholas Bellinger if (atomic_read(&tf->tf_access_cnt)) { 562c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 5636708bb27SAndy Grover pr_err("Non zero tf->tf_access_cnt for fabric %s\n", 564c66ac9dbSNicholas Bellinger tf->tf_name); 565c66ac9dbSNicholas Bellinger BUG(); 566c66ac9dbSNicholas Bellinger } 567c66ac9dbSNicholas Bellinger list_del(&tf->tf_list); 568c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 569c66ac9dbSNicholas Bellinger 5706708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" 571c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 572c66ac9dbSNicholas Bellinger tf->tf_module = NULL; 573c66ac9dbSNicholas Bellinger tf->tf_subsys = NULL; 574c66ac9dbSNicholas Bellinger kfree(tf); 575c66ac9dbSNicholas Bellinger 5766708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" 577c66ac9dbSNicholas Bellinger ">>>>>\n"); 578c66ac9dbSNicholas Bellinger } 579c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_deregister); 580c66ac9dbSNicholas Bellinger 581c66ac9dbSNicholas Bellinger /*############################################################################## 582c66ac9dbSNicholas Bellinger // Stop functions called by external Target Fabrics Modules 583c66ac9dbSNicholas Bellinger //############################################################################*/ 584c66ac9dbSNicholas Bellinger 585c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_dev_attrib_cit */ 586c66ac9dbSNicholas Bellinger 587c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB_SHOW(_name) \ 588c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_show_attr_##_name( \ 589c66ac9dbSNicholas Bellinger struct se_dev_attrib *da, \ 590c66ac9dbSNicholas Bellinger char *page) \ 591c66ac9dbSNicholas Bellinger { \ 592c66ac9dbSNicholas Bellinger struct se_device *dev; \ 593c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = da->da_sub_dev; \ 594c66ac9dbSNicholas Bellinger ssize_t rb; \ 595c66ac9dbSNicholas Bellinger \ 596c66ac9dbSNicholas Bellinger spin_lock(&se_dev->se_dev_lock); \ 597c66ac9dbSNicholas Bellinger dev = se_dev->se_dev_ptr; \ 5986708bb27SAndy Grover if (!dev) { \ 599c66ac9dbSNicholas Bellinger spin_unlock(&se_dev->se_dev_lock); \ 600c66ac9dbSNicholas Bellinger return -ENODEV; \ 601c66ac9dbSNicholas Bellinger } \ 602e3d6f909SAndy Grover rb = snprintf(page, PAGE_SIZE, "%u\n", \ 603e3d6f909SAndy Grover (u32)dev->se_sub_dev->se_dev_attrib._name); \ 604c66ac9dbSNicholas Bellinger spin_unlock(&se_dev->se_dev_lock); \ 605c66ac9dbSNicholas Bellinger \ 606c66ac9dbSNicholas Bellinger return rb; \ 607c66ac9dbSNicholas Bellinger } 608c66ac9dbSNicholas Bellinger 609c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB_STORE(_name) \ 610c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_store_attr_##_name( \ 611c66ac9dbSNicholas Bellinger struct se_dev_attrib *da, \ 612c66ac9dbSNicholas Bellinger const char *page, \ 613c66ac9dbSNicholas Bellinger size_t count) \ 614c66ac9dbSNicholas Bellinger { \ 615c66ac9dbSNicholas Bellinger struct se_device *dev; \ 616c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = da->da_sub_dev; \ 617c66ac9dbSNicholas Bellinger unsigned long val; \ 618c66ac9dbSNicholas Bellinger int ret; \ 619c66ac9dbSNicholas Bellinger \ 620c66ac9dbSNicholas Bellinger spin_lock(&se_dev->se_dev_lock); \ 621c66ac9dbSNicholas Bellinger dev = se_dev->se_dev_ptr; \ 6226708bb27SAndy Grover if (!dev) { \ 623c66ac9dbSNicholas Bellinger spin_unlock(&se_dev->se_dev_lock); \ 624c66ac9dbSNicholas Bellinger return -ENODEV; \ 625c66ac9dbSNicholas Bellinger } \ 626c66ac9dbSNicholas Bellinger ret = strict_strtoul(page, 0, &val); \ 627c66ac9dbSNicholas Bellinger if (ret < 0) { \ 628c66ac9dbSNicholas Bellinger spin_unlock(&se_dev->se_dev_lock); \ 6296708bb27SAndy Grover pr_err("strict_strtoul() failed with" \ 630c66ac9dbSNicholas Bellinger " ret: %d\n", ret); \ 631c66ac9dbSNicholas Bellinger return -EINVAL; \ 632c66ac9dbSNicholas Bellinger } \ 633c66ac9dbSNicholas Bellinger ret = se_dev_set_##_name(dev, (u32)val); \ 634c66ac9dbSNicholas Bellinger spin_unlock(&se_dev->se_dev_lock); \ 635c66ac9dbSNicholas Bellinger \ 636c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; \ 637c66ac9dbSNicholas Bellinger } 638c66ac9dbSNicholas Bellinger 639c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB(_name) \ 640c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_SHOW(_name); \ 641c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_STORE(_name); 642c66ac9dbSNicholas Bellinger 643c66ac9dbSNicholas Bellinger #define DEF_DEV_ATTRIB_RO(_name) \ 644c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_SHOW(_name); 645c66ac9dbSNicholas Bellinger 646c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); 647c66ac9dbSNicholas Bellinger #define SE_DEV_ATTR(_name, _mode) \ 648c66ac9dbSNicholas Bellinger static struct target_core_dev_attrib_attribute \ 649c66ac9dbSNicholas Bellinger target_core_dev_attrib_##_name = \ 650c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 651c66ac9dbSNicholas Bellinger target_core_dev_show_attr_##_name, \ 652c66ac9dbSNicholas Bellinger target_core_dev_store_attr_##_name); 653c66ac9dbSNicholas Bellinger 654c66ac9dbSNicholas Bellinger #define SE_DEV_ATTR_RO(_name); \ 655c66ac9dbSNicholas Bellinger static struct target_core_dev_attrib_attribute \ 656c66ac9dbSNicholas Bellinger target_core_dev_attrib_##_name = \ 657c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 658c66ac9dbSNicholas Bellinger target_core_dev_show_attr_##_name); 659c66ac9dbSNicholas Bellinger 660c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_dpo); 661c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); 662c66ac9dbSNicholas Bellinger 663c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_fua_write); 664c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); 665c66ac9dbSNicholas Bellinger 666c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_fua_read); 667c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); 668c66ac9dbSNicholas Bellinger 669c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_write_cache); 670c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); 671c66ac9dbSNicholas Bellinger 672c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); 673c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); 674c66ac9dbSNicholas Bellinger 675c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_tas); 676c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); 677c66ac9dbSNicholas Bellinger 678c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_tpu); 679c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); 680c66ac9dbSNicholas Bellinger 681c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(emulate_tpws); 682c66ac9dbSNicholas Bellinger SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); 683c66ac9dbSNicholas Bellinger 684c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(enforce_pr_isids); 685c66ac9dbSNicholas Bellinger SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); 686c66ac9dbSNicholas Bellinger 687e22a7f07SRoland Dreier DEF_DEV_ATTRIB(is_nonrot); 688e22a7f07SRoland Dreier SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); 689e22a7f07SRoland Dreier 6905de619a3SNicholas Bellinger DEF_DEV_ATTRIB(emulate_rest_reord); 6915de619a3SNicholas Bellinger SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); 6925de619a3SNicholas Bellinger 693c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_block_size); 694c66ac9dbSNicholas Bellinger SE_DEV_ATTR_RO(hw_block_size); 695c66ac9dbSNicholas Bellinger 696c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(block_size); 697c66ac9dbSNicholas Bellinger SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); 698c66ac9dbSNicholas Bellinger 699c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_max_sectors); 700c66ac9dbSNicholas Bellinger SE_DEV_ATTR_RO(hw_max_sectors); 701c66ac9dbSNicholas Bellinger 702c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(max_sectors); 703c66ac9dbSNicholas Bellinger SE_DEV_ATTR(max_sectors, S_IRUGO | S_IWUSR); 704c66ac9dbSNicholas Bellinger 705c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(optimal_sectors); 706c66ac9dbSNicholas Bellinger SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); 707c66ac9dbSNicholas Bellinger 708c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB_RO(hw_queue_depth); 709c66ac9dbSNicholas Bellinger SE_DEV_ATTR_RO(hw_queue_depth); 710c66ac9dbSNicholas Bellinger 711c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(queue_depth); 712c66ac9dbSNicholas Bellinger SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); 713c66ac9dbSNicholas Bellinger 714c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(max_unmap_lba_count); 715c66ac9dbSNicholas Bellinger SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); 716c66ac9dbSNicholas Bellinger 717c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(max_unmap_block_desc_count); 718c66ac9dbSNicholas Bellinger SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); 719c66ac9dbSNicholas Bellinger 720c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(unmap_granularity); 721c66ac9dbSNicholas Bellinger SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); 722c66ac9dbSNicholas Bellinger 723c66ac9dbSNicholas Bellinger DEF_DEV_ATTRIB(unmap_granularity_alignment); 724c66ac9dbSNicholas Bellinger SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); 725c66ac9dbSNicholas Bellinger 726c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); 727c66ac9dbSNicholas Bellinger 728c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrib_attrs[] = { 729c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_dpo.attr, 730c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_fua_write.attr, 731c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_fua_read.attr, 732c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_write_cache.attr, 733c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, 734c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_tas.attr, 735c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_tpu.attr, 736c66ac9dbSNicholas Bellinger &target_core_dev_attrib_emulate_tpws.attr, 737c66ac9dbSNicholas Bellinger &target_core_dev_attrib_enforce_pr_isids.attr, 738e22a7f07SRoland Dreier &target_core_dev_attrib_is_nonrot.attr, 7395de619a3SNicholas Bellinger &target_core_dev_attrib_emulate_rest_reord.attr, 740c66ac9dbSNicholas Bellinger &target_core_dev_attrib_hw_block_size.attr, 741c66ac9dbSNicholas Bellinger &target_core_dev_attrib_block_size.attr, 742c66ac9dbSNicholas Bellinger &target_core_dev_attrib_hw_max_sectors.attr, 743c66ac9dbSNicholas Bellinger &target_core_dev_attrib_max_sectors.attr, 744c66ac9dbSNicholas Bellinger &target_core_dev_attrib_optimal_sectors.attr, 745c66ac9dbSNicholas Bellinger &target_core_dev_attrib_hw_queue_depth.attr, 746c66ac9dbSNicholas Bellinger &target_core_dev_attrib_queue_depth.attr, 747c66ac9dbSNicholas Bellinger &target_core_dev_attrib_max_unmap_lba_count.attr, 748c66ac9dbSNicholas Bellinger &target_core_dev_attrib_max_unmap_block_desc_count.attr, 749c66ac9dbSNicholas Bellinger &target_core_dev_attrib_unmap_granularity.attr, 750c66ac9dbSNicholas Bellinger &target_core_dev_attrib_unmap_granularity_alignment.attr, 751c66ac9dbSNicholas Bellinger NULL, 752c66ac9dbSNicholas Bellinger }; 753c66ac9dbSNicholas Bellinger 754c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_attrib_ops = { 755c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_attrib_attr_show, 756c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_attrib_attr_store, 757c66ac9dbSNicholas Bellinger }; 758c66ac9dbSNicholas Bellinger 759c66ac9dbSNicholas Bellinger static struct config_item_type target_core_dev_attrib_cit = { 760c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_dev_attrib_ops, 761c66ac9dbSNicholas Bellinger .ct_attrs = target_core_dev_attrib_attrs, 762c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 763c66ac9dbSNicholas Bellinger }; 764c66ac9dbSNicholas Bellinger 765c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_dev_attrib_cit */ 766c66ac9dbSNicholas Bellinger 767c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_dev_wwn_cit */ 768c66ac9dbSNicholas Bellinger 769c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); 770c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR(_name, _mode) \ 771c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ 772c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 773c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name, \ 774c66ac9dbSNicholas Bellinger target_core_dev_wwn_store_attr_##_name); 775c66ac9dbSNicholas Bellinger 776c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR_RO(_name); \ 777c66ac9dbSNicholas Bellinger do { \ 778c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute \ 779c66ac9dbSNicholas Bellinger target_core_dev_wwn_##_name = \ 780c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 781c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name); \ 782c66ac9dbSNicholas Bellinger } while (0); 783c66ac9dbSNicholas Bellinger 784c66ac9dbSNicholas Bellinger /* 785c66ac9dbSNicholas Bellinger * VPD page 0x80 Unit serial 786c66ac9dbSNicholas Bellinger */ 787c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( 788c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 789c66ac9dbSNicholas Bellinger char *page) 790c66ac9dbSNicholas Bellinger { 791c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; 792c66ac9dbSNicholas Bellinger struct se_device *dev; 793c66ac9dbSNicholas Bellinger 794c66ac9dbSNicholas Bellinger dev = se_dev->se_dev_ptr; 7956708bb27SAndy Grover if (!dev) 796c66ac9dbSNicholas Bellinger return -ENODEV; 797c66ac9dbSNicholas Bellinger 798c66ac9dbSNicholas Bellinger return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 799c66ac9dbSNicholas Bellinger &t10_wwn->unit_serial[0]); 800c66ac9dbSNicholas Bellinger } 801c66ac9dbSNicholas Bellinger 802c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( 803c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 804c66ac9dbSNicholas Bellinger const char *page, 805c66ac9dbSNicholas Bellinger size_t count) 806c66ac9dbSNicholas Bellinger { 807c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev; 808c66ac9dbSNicholas Bellinger struct se_device *dev; 809c66ac9dbSNicholas Bellinger unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; 810c66ac9dbSNicholas Bellinger 811c66ac9dbSNicholas Bellinger /* 812c66ac9dbSNicholas Bellinger * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 813c66ac9dbSNicholas Bellinger * from the struct scsi_device level firmware, do not allow 814c66ac9dbSNicholas Bellinger * VPD Unit Serial to be emulated. 815c66ac9dbSNicholas Bellinger * 816c66ac9dbSNicholas Bellinger * Note this struct scsi_device could also be emulating VPD 817c66ac9dbSNicholas Bellinger * information from its drivers/scsi LLD. But for now we assume 818c66ac9dbSNicholas Bellinger * it is doing 'the right thing' wrt a world wide unique 819c66ac9dbSNicholas Bellinger * VPD Unit Serial Number that OS dependent multipath can depend on. 820c66ac9dbSNicholas Bellinger */ 821c66ac9dbSNicholas Bellinger if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) { 8226708bb27SAndy Grover pr_err("Underlying SCSI device firmware provided VPD" 823c66ac9dbSNicholas Bellinger " Unit Serial, ignoring request\n"); 824c66ac9dbSNicholas Bellinger return -EOPNOTSUPP; 825c66ac9dbSNicholas Bellinger } 826c66ac9dbSNicholas Bellinger 82760d645a4SDan Carpenter if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 8286708bb27SAndy Grover pr_err("Emulated VPD Unit Serial exceeds" 829c66ac9dbSNicholas Bellinger " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 830c66ac9dbSNicholas Bellinger return -EOVERFLOW; 831c66ac9dbSNicholas Bellinger } 832c66ac9dbSNicholas Bellinger /* 833c66ac9dbSNicholas Bellinger * Check to see if any active $FABRIC_MOD exports exist. If they 834c66ac9dbSNicholas Bellinger * do exist, fail here as changing this information on the fly 835c66ac9dbSNicholas Bellinger * (underneath the initiator side OS dependent multipath code) 836c66ac9dbSNicholas Bellinger * could cause negative effects. 837c66ac9dbSNicholas Bellinger */ 838c66ac9dbSNicholas Bellinger dev = su_dev->se_dev_ptr; 8396708bb27SAndy Grover if (dev) { 840c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 8416708bb27SAndy Grover pr_err("Unable to set VPD Unit Serial while" 842c66ac9dbSNicholas Bellinger " active %d $FABRIC_MOD exports exist\n", 843c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_export_obj.obj_access_count)); 844c66ac9dbSNicholas Bellinger return -EINVAL; 845c66ac9dbSNicholas Bellinger } 846c66ac9dbSNicholas Bellinger } 847c66ac9dbSNicholas Bellinger /* 848c66ac9dbSNicholas Bellinger * This currently assumes ASCII encoding for emulated VPD Unit Serial. 849c66ac9dbSNicholas Bellinger * 850c66ac9dbSNicholas Bellinger * Also, strip any newline added from the userspace 851c66ac9dbSNicholas Bellinger * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 852c66ac9dbSNicholas Bellinger */ 853c66ac9dbSNicholas Bellinger memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); 854c66ac9dbSNicholas Bellinger snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 855c66ac9dbSNicholas Bellinger snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 856c66ac9dbSNicholas Bellinger "%s", strstrip(buf)); 857c66ac9dbSNicholas Bellinger su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL; 858c66ac9dbSNicholas Bellinger 8596708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 860c66ac9dbSNicholas Bellinger " %s\n", su_dev->t10_wwn.unit_serial); 861c66ac9dbSNicholas Bellinger 862c66ac9dbSNicholas Bellinger return count; 863c66ac9dbSNicholas Bellinger } 864c66ac9dbSNicholas Bellinger 865c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); 866c66ac9dbSNicholas Bellinger 867c66ac9dbSNicholas Bellinger /* 868c66ac9dbSNicholas Bellinger * VPD page 0x83 Protocol Identifier 869c66ac9dbSNicholas Bellinger */ 870c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( 871c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 872c66ac9dbSNicholas Bellinger char *page) 873c66ac9dbSNicholas Bellinger { 874c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; 875c66ac9dbSNicholas Bellinger struct se_device *dev; 876c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; 877c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; 878c66ac9dbSNicholas Bellinger ssize_t len = 0; 879c66ac9dbSNicholas Bellinger 880c66ac9dbSNicholas Bellinger dev = se_dev->se_dev_ptr; 8816708bb27SAndy Grover if (!dev) 882c66ac9dbSNicholas Bellinger return -ENODEV; 883c66ac9dbSNicholas Bellinger 884c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); 885c66ac9dbSNicholas Bellinger 886c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); 887c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 8886708bb27SAndy Grover if (!vpd->protocol_identifier_set) 889c66ac9dbSNicholas Bellinger continue; 890c66ac9dbSNicholas Bellinger 891c66ac9dbSNicholas Bellinger transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 892c66ac9dbSNicholas Bellinger 8936708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 894c66ac9dbSNicholas Bellinger break; 895c66ac9dbSNicholas Bellinger 896c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 897c66ac9dbSNicholas Bellinger } 898c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); 899c66ac9dbSNicholas Bellinger 900c66ac9dbSNicholas Bellinger return len; 901c66ac9dbSNicholas Bellinger } 902c66ac9dbSNicholas Bellinger 903c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( 904c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 905c66ac9dbSNicholas Bellinger const char *page, 906c66ac9dbSNicholas Bellinger size_t count) 907c66ac9dbSNicholas Bellinger { 908c66ac9dbSNicholas Bellinger return -ENOSYS; 909c66ac9dbSNicholas Bellinger } 910c66ac9dbSNicholas Bellinger 911c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); 912c66ac9dbSNicholas Bellinger 913c66ac9dbSNicholas Bellinger /* 914c66ac9dbSNicholas Bellinger * Generic wrapper for dumping VPD identifiers by association. 915c66ac9dbSNicholas Bellinger */ 916c66ac9dbSNicholas Bellinger #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 917c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_##_name( \ 918c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, \ 919c66ac9dbSNicholas Bellinger char *page) \ 920c66ac9dbSNicholas Bellinger { \ 921c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \ 922c66ac9dbSNicholas Bellinger struct se_device *dev; \ 923c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; \ 924c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; \ 925c66ac9dbSNicholas Bellinger ssize_t len = 0; \ 926c66ac9dbSNicholas Bellinger \ 927c66ac9dbSNicholas Bellinger dev = se_dev->se_dev_ptr; \ 9286708bb27SAndy Grover if (!dev) \ 929c66ac9dbSNicholas Bellinger return -ENODEV; \ 930c66ac9dbSNicholas Bellinger \ 931c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); \ 932c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 933c66ac9dbSNicholas Bellinger if (vpd->association != _assoc) \ 934c66ac9dbSNicholas Bellinger continue; \ 935c66ac9dbSNicholas Bellinger \ 936c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 937c66ac9dbSNicholas Bellinger transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 9386708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 939c66ac9dbSNicholas Bellinger break; \ 940c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 941c66ac9dbSNicholas Bellinger \ 942c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 943c66ac9dbSNicholas Bellinger transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 9446708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 945c66ac9dbSNicholas Bellinger break; \ 946c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 947c66ac9dbSNicholas Bellinger \ 948c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 949c66ac9dbSNicholas Bellinger transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 9506708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 951c66ac9dbSNicholas Bellinger break; \ 952c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 953c66ac9dbSNicholas Bellinger } \ 954c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); \ 955c66ac9dbSNicholas Bellinger \ 956c66ac9dbSNicholas Bellinger return len; \ 957c66ac9dbSNicholas Bellinger } 958c66ac9dbSNicholas Bellinger 959c66ac9dbSNicholas Bellinger /* 960163cd5faSAndy Shevchenko * VPD page 0x83 Association: Logical Unit 961c66ac9dbSNicholas Bellinger */ 962c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 963c66ac9dbSNicholas Bellinger 964c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( 965c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 966c66ac9dbSNicholas Bellinger const char *page, 967c66ac9dbSNicholas Bellinger size_t count) 968c66ac9dbSNicholas Bellinger { 969c66ac9dbSNicholas Bellinger return -ENOSYS; 970c66ac9dbSNicholas Bellinger } 971c66ac9dbSNicholas Bellinger 972c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); 973c66ac9dbSNicholas Bellinger 974c66ac9dbSNicholas Bellinger /* 975c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: Target Port 976c66ac9dbSNicholas Bellinger */ 977c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 978c66ac9dbSNicholas Bellinger 979c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( 980c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 981c66ac9dbSNicholas Bellinger const char *page, 982c66ac9dbSNicholas Bellinger size_t count) 983c66ac9dbSNicholas Bellinger { 984c66ac9dbSNicholas Bellinger return -ENOSYS; 985c66ac9dbSNicholas Bellinger } 986c66ac9dbSNicholas Bellinger 987c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); 988c66ac9dbSNicholas Bellinger 989c66ac9dbSNicholas Bellinger /* 990c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: SCSI Target Device 991c66ac9dbSNicholas Bellinger */ 992c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 993c66ac9dbSNicholas Bellinger 994c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( 995c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 996c66ac9dbSNicholas Bellinger const char *page, 997c66ac9dbSNicholas Bellinger size_t count) 998c66ac9dbSNicholas Bellinger { 999c66ac9dbSNicholas Bellinger return -ENOSYS; 1000c66ac9dbSNicholas Bellinger } 1001c66ac9dbSNicholas Bellinger 1002c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); 1003c66ac9dbSNicholas Bellinger 1004c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); 1005c66ac9dbSNicholas Bellinger 1006c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 1007c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_unit_serial.attr, 1008c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_protocol_identifier.attr, 1009c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_logical_unit.attr, 1010c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_target_port.attr, 1011c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, 1012c66ac9dbSNicholas Bellinger NULL, 1013c66ac9dbSNicholas Bellinger }; 1014c66ac9dbSNicholas Bellinger 1015c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_wwn_ops = { 1016c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_wwn_attr_show, 1017c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_wwn_attr_store, 1018c66ac9dbSNicholas Bellinger }; 1019c66ac9dbSNicholas Bellinger 1020c66ac9dbSNicholas Bellinger static struct config_item_type target_core_dev_wwn_cit = { 1021c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_dev_wwn_ops, 1022c66ac9dbSNicholas Bellinger .ct_attrs = target_core_dev_wwn_attrs, 1023c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 1024c66ac9dbSNicholas Bellinger }; 1025c66ac9dbSNicholas Bellinger 1026c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_dev_wwn_cit */ 1027c66ac9dbSNicholas Bellinger 1028c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_dev_pr_cit */ 1029c66ac9dbSNicholas Bellinger 1030c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev); 1031c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR(_name, _mode) \ 1032c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 1033c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 1034c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name, \ 1035c66ac9dbSNicholas Bellinger target_core_dev_pr_store_attr_##_name); 1036c66ac9dbSNicholas Bellinger 1037c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR_RO(_name); \ 1038c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 1039c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 1040c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name); 1041c66ac9dbSNicholas Bellinger 1042c66ac9dbSNicholas Bellinger /* 1043c66ac9dbSNicholas Bellinger * res_holder 1044c66ac9dbSNicholas Bellinger */ 1045c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_spc3_res( 1046c66ac9dbSNicholas Bellinger struct se_device *dev, 1047c66ac9dbSNicholas Bellinger char *page, 1048c66ac9dbSNicholas Bellinger ssize_t *len) 1049c66ac9dbSNicholas Bellinger { 1050c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1051c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1052c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1053c66ac9dbSNicholas Bellinger int prf_isid; 1054c66ac9dbSNicholas Bellinger 1055c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1056c66ac9dbSNicholas Bellinger 1057c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1058c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 10596708bb27SAndy Grover if (!pr_reg) { 1060c66ac9dbSNicholas Bellinger *len += sprintf(page + *len, "No SPC-3 Reservation holder\n"); 1061c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1062c66ac9dbSNicholas Bellinger return *len; 1063c66ac9dbSNicholas Bellinger } 1064c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1065c66ac9dbSNicholas Bellinger prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 1066c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 1067c66ac9dbSNicholas Bellinger 1068c66ac9dbSNicholas Bellinger *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n", 1069e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1070c66ac9dbSNicholas Bellinger se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); 1071c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1072c66ac9dbSNicholas Bellinger 1073c66ac9dbSNicholas Bellinger return *len; 1074c66ac9dbSNicholas Bellinger } 1075c66ac9dbSNicholas Bellinger 1076c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_spc2_res( 1077c66ac9dbSNicholas Bellinger struct se_device *dev, 1078c66ac9dbSNicholas Bellinger char *page, 1079c66ac9dbSNicholas Bellinger ssize_t *len) 1080c66ac9dbSNicholas Bellinger { 1081c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1082c66ac9dbSNicholas Bellinger 1083c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1084c66ac9dbSNicholas Bellinger se_nacl = dev->dev_reserved_node_acl; 10856708bb27SAndy Grover if (!se_nacl) { 1086c66ac9dbSNicholas Bellinger *len += sprintf(page + *len, "No SPC-2 Reservation holder\n"); 1087c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1088c66ac9dbSNicholas Bellinger return *len; 1089c66ac9dbSNicholas Bellinger } 1090c66ac9dbSNicholas Bellinger *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n", 1091e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1092c66ac9dbSNicholas Bellinger se_nacl->initiatorname); 1093c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1094c66ac9dbSNicholas Bellinger 1095c66ac9dbSNicholas Bellinger return *len; 1096c66ac9dbSNicholas Bellinger } 1097c66ac9dbSNicholas Bellinger 1098c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_holder( 1099c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1100c66ac9dbSNicholas Bellinger char *page) 1101c66ac9dbSNicholas Bellinger { 1102c66ac9dbSNicholas Bellinger ssize_t len = 0; 1103c66ac9dbSNicholas Bellinger 11046708bb27SAndy Grover if (!su_dev->se_dev_ptr) 1105c66ac9dbSNicholas Bellinger return -ENODEV; 1106c66ac9dbSNicholas Bellinger 1107e3d6f909SAndy Grover switch (su_dev->t10_pr.res_type) { 1108c66ac9dbSNicholas Bellinger case SPC3_PERSISTENT_RESERVATIONS: 1109c66ac9dbSNicholas Bellinger target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr, 1110c66ac9dbSNicholas Bellinger page, &len); 1111c66ac9dbSNicholas Bellinger break; 1112c66ac9dbSNicholas Bellinger case SPC2_RESERVATIONS: 1113c66ac9dbSNicholas Bellinger target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr, 1114c66ac9dbSNicholas Bellinger page, &len); 1115c66ac9dbSNicholas Bellinger break; 1116c66ac9dbSNicholas Bellinger case SPC_PASSTHROUGH: 1117c66ac9dbSNicholas Bellinger len += sprintf(page+len, "Passthrough\n"); 1118c66ac9dbSNicholas Bellinger break; 1119c66ac9dbSNicholas Bellinger default: 1120c66ac9dbSNicholas Bellinger len += sprintf(page+len, "Unknown\n"); 1121c66ac9dbSNicholas Bellinger break; 1122c66ac9dbSNicholas Bellinger } 1123c66ac9dbSNicholas Bellinger 1124c66ac9dbSNicholas Bellinger return len; 1125c66ac9dbSNicholas Bellinger } 1126c66ac9dbSNicholas Bellinger 1127c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_holder); 1128c66ac9dbSNicholas Bellinger 1129c66ac9dbSNicholas Bellinger /* 1130c66ac9dbSNicholas Bellinger * res_pr_all_tgt_pts 1131c66ac9dbSNicholas Bellinger */ 1132c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( 1133c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1134c66ac9dbSNicholas Bellinger char *page) 1135c66ac9dbSNicholas Bellinger { 1136c66ac9dbSNicholas Bellinger struct se_device *dev; 1137c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1138c66ac9dbSNicholas Bellinger ssize_t len = 0; 1139c66ac9dbSNicholas Bellinger 1140c66ac9dbSNicholas Bellinger dev = su_dev->se_dev_ptr; 11416708bb27SAndy Grover if (!dev) 1142c66ac9dbSNicholas Bellinger return -ENODEV; 1143c66ac9dbSNicholas Bellinger 1144e3d6f909SAndy Grover if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1145c66ac9dbSNicholas Bellinger return len; 1146c66ac9dbSNicholas Bellinger 1147c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1148c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 11496708bb27SAndy Grover if (!pr_reg) { 1150c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1151c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1152c66ac9dbSNicholas Bellinger return len; 1153c66ac9dbSNicholas Bellinger } 1154c66ac9dbSNicholas Bellinger /* 1155c66ac9dbSNicholas Bellinger * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3 1156c66ac9dbSNicholas Bellinger * Basic PERSISTENT RESERVER OUT parameter list, page 290 1157c66ac9dbSNicholas Bellinger */ 1158c66ac9dbSNicholas Bellinger if (pr_reg->pr_reg_all_tg_pt) 1159c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: All Target" 1160c66ac9dbSNicholas Bellinger " Ports registration\n"); 1161c66ac9dbSNicholas Bellinger else 1162c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: Single" 1163c66ac9dbSNicholas Bellinger " Target Port registration\n"); 1164c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1165c66ac9dbSNicholas Bellinger 1166c66ac9dbSNicholas Bellinger return len; 1167c66ac9dbSNicholas Bellinger } 1168c66ac9dbSNicholas Bellinger 1169c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); 1170c66ac9dbSNicholas Bellinger 1171c66ac9dbSNicholas Bellinger /* 1172c66ac9dbSNicholas Bellinger * res_pr_generation 1173c66ac9dbSNicholas Bellinger */ 1174c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_generation( 1175c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1176c66ac9dbSNicholas Bellinger char *page) 1177c66ac9dbSNicholas Bellinger { 11786708bb27SAndy Grover if (!su_dev->se_dev_ptr) 1179c66ac9dbSNicholas Bellinger return -ENODEV; 1180c66ac9dbSNicholas Bellinger 1181e3d6f909SAndy Grover if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1182c66ac9dbSNicholas Bellinger return 0; 1183c66ac9dbSNicholas Bellinger 1184e3d6f909SAndy Grover return sprintf(page, "0x%08x\n", su_dev->t10_pr.pr_generation); 1185c66ac9dbSNicholas Bellinger } 1186c66ac9dbSNicholas Bellinger 1187c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_generation); 1188c66ac9dbSNicholas Bellinger 1189c66ac9dbSNicholas Bellinger /* 1190c66ac9dbSNicholas Bellinger * res_pr_holder_tg_port 1191c66ac9dbSNicholas Bellinger */ 1192c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( 1193c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1194c66ac9dbSNicholas Bellinger char *page) 1195c66ac9dbSNicholas Bellinger { 1196c66ac9dbSNicholas Bellinger struct se_device *dev; 1197c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1198c66ac9dbSNicholas Bellinger struct se_lun *lun; 1199c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg; 1200c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1201c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo; 1202c66ac9dbSNicholas Bellinger ssize_t len = 0; 1203c66ac9dbSNicholas Bellinger 1204c66ac9dbSNicholas Bellinger dev = su_dev->se_dev_ptr; 12056708bb27SAndy Grover if (!dev) 1206c66ac9dbSNicholas Bellinger return -ENODEV; 1207c66ac9dbSNicholas Bellinger 1208e3d6f909SAndy Grover if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1209c66ac9dbSNicholas Bellinger return len; 1210c66ac9dbSNicholas Bellinger 1211c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1212c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 12136708bb27SAndy Grover if (!pr_reg) { 1214c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1215c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1216c66ac9dbSNicholas Bellinger return len; 1217c66ac9dbSNicholas Bellinger } 1218c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1219c66ac9dbSNicholas Bellinger se_tpg = se_nacl->se_tpg; 1220c66ac9dbSNicholas Bellinger lun = pr_reg->pr_reg_tg_pt_lun; 1221e3d6f909SAndy Grover tfo = se_tpg->se_tpg_tfo; 1222c66ac9dbSNicholas Bellinger 1223c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: %s" 1224c66ac9dbSNicholas Bellinger " Target Node Endpoint: %s\n", tfo->get_fabric_name(), 1225c66ac9dbSNicholas Bellinger tfo->tpg_get_wwn(se_tpg)); 1226c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 1227c66ac9dbSNicholas Bellinger " Identifer Tag: %hu %s Portal Group Tag: %hu" 1228c66ac9dbSNicholas Bellinger " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, 1229c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), 1230c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), lun->unpacked_lun); 1231c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1232c66ac9dbSNicholas Bellinger 1233c66ac9dbSNicholas Bellinger return len; 1234c66ac9dbSNicholas Bellinger } 1235c66ac9dbSNicholas Bellinger 1236c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); 1237c66ac9dbSNicholas Bellinger 1238c66ac9dbSNicholas Bellinger /* 1239c66ac9dbSNicholas Bellinger * res_pr_registered_i_pts 1240c66ac9dbSNicholas Bellinger */ 1241c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( 1242c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1243c66ac9dbSNicholas Bellinger char *page) 1244c66ac9dbSNicholas Bellinger { 1245c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo; 1246c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1247c66ac9dbSNicholas Bellinger unsigned char buf[384]; 1248c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1249c66ac9dbSNicholas Bellinger ssize_t len = 0; 1250c66ac9dbSNicholas Bellinger int reg_count = 0, prf_isid; 1251c66ac9dbSNicholas Bellinger 12526708bb27SAndy Grover if (!su_dev->se_dev_ptr) 1253c66ac9dbSNicholas Bellinger return -ENODEV; 1254c66ac9dbSNicholas Bellinger 1255e3d6f909SAndy Grover if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1256c66ac9dbSNicholas Bellinger return len; 1257c66ac9dbSNicholas Bellinger 1258c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 1259c66ac9dbSNicholas Bellinger 1260e3d6f909SAndy Grover spin_lock(&su_dev->t10_pr.registration_lock); 1261e3d6f909SAndy Grover list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list, 1262c66ac9dbSNicholas Bellinger pr_reg_list) { 1263c66ac9dbSNicholas Bellinger 1264c66ac9dbSNicholas Bellinger memset(buf, 0, 384); 1265c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1266c66ac9dbSNicholas Bellinger tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1267c66ac9dbSNicholas Bellinger prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 1268c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 1269c66ac9dbSNicholas Bellinger sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 1270c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), 1271c66ac9dbSNicholas Bellinger pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? 1272c66ac9dbSNicholas Bellinger &i_buf[0] : "", pr_reg->pr_res_key, 1273c66ac9dbSNicholas Bellinger pr_reg->pr_res_generation); 1274c66ac9dbSNicholas Bellinger 12756708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1276c66ac9dbSNicholas Bellinger break; 1277c66ac9dbSNicholas Bellinger 1278c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1279c66ac9dbSNicholas Bellinger reg_count++; 1280c66ac9dbSNicholas Bellinger } 1281e3d6f909SAndy Grover spin_unlock(&su_dev->t10_pr.registration_lock); 1282c66ac9dbSNicholas Bellinger 12836708bb27SAndy Grover if (!reg_count) 1284c66ac9dbSNicholas Bellinger len += sprintf(page+len, "None\n"); 1285c66ac9dbSNicholas Bellinger 1286c66ac9dbSNicholas Bellinger return len; 1287c66ac9dbSNicholas Bellinger } 1288c66ac9dbSNicholas Bellinger 1289c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); 1290c66ac9dbSNicholas Bellinger 1291c66ac9dbSNicholas Bellinger /* 1292c66ac9dbSNicholas Bellinger * res_pr_type 1293c66ac9dbSNicholas Bellinger */ 1294c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_type( 1295c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1296c66ac9dbSNicholas Bellinger char *page) 1297c66ac9dbSNicholas Bellinger { 1298c66ac9dbSNicholas Bellinger struct se_device *dev; 1299c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1300c66ac9dbSNicholas Bellinger ssize_t len = 0; 1301c66ac9dbSNicholas Bellinger 1302c66ac9dbSNicholas Bellinger dev = su_dev->se_dev_ptr; 13036708bb27SAndy Grover if (!dev) 1304c66ac9dbSNicholas Bellinger return -ENODEV; 1305c66ac9dbSNicholas Bellinger 1306e3d6f909SAndy Grover if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1307c66ac9dbSNicholas Bellinger return len; 1308c66ac9dbSNicholas Bellinger 1309c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1310c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 13116708bb27SAndy Grover if (!pr_reg) { 1312c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1313c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1314c66ac9dbSNicholas Bellinger return len; 1315c66ac9dbSNicholas Bellinger } 1316c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1317c66ac9dbSNicholas Bellinger core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1318c66ac9dbSNicholas Bellinger spin_unlock(&dev->dev_reservation_lock); 1319c66ac9dbSNicholas Bellinger 1320c66ac9dbSNicholas Bellinger return len; 1321c66ac9dbSNicholas Bellinger } 1322c66ac9dbSNicholas Bellinger 1323c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_type); 1324c66ac9dbSNicholas Bellinger 1325c66ac9dbSNicholas Bellinger /* 1326c66ac9dbSNicholas Bellinger * res_type 1327c66ac9dbSNicholas Bellinger */ 1328c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_type( 1329c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1330c66ac9dbSNicholas Bellinger char *page) 1331c66ac9dbSNicholas Bellinger { 1332c66ac9dbSNicholas Bellinger ssize_t len = 0; 1333c66ac9dbSNicholas Bellinger 13346708bb27SAndy Grover if (!su_dev->se_dev_ptr) 1335c66ac9dbSNicholas Bellinger return -ENODEV; 1336c66ac9dbSNicholas Bellinger 1337e3d6f909SAndy Grover switch (su_dev->t10_pr.res_type) { 1338c66ac9dbSNicholas Bellinger case SPC3_PERSISTENT_RESERVATIONS: 1339c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1340c66ac9dbSNicholas Bellinger break; 1341c66ac9dbSNicholas Bellinger case SPC2_RESERVATIONS: 1342c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC2_RESERVATIONS\n"); 1343c66ac9dbSNicholas Bellinger break; 1344c66ac9dbSNicholas Bellinger case SPC_PASSTHROUGH: 1345c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC_PASSTHROUGH\n"); 1346c66ac9dbSNicholas Bellinger break; 1347c66ac9dbSNicholas Bellinger default: 1348c66ac9dbSNicholas Bellinger len = sprintf(page, "UNKNOWN\n"); 1349c66ac9dbSNicholas Bellinger break; 1350c66ac9dbSNicholas Bellinger } 1351c66ac9dbSNicholas Bellinger 1352c66ac9dbSNicholas Bellinger return len; 1353c66ac9dbSNicholas Bellinger } 1354c66ac9dbSNicholas Bellinger 1355c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_type); 1356c66ac9dbSNicholas Bellinger 1357c66ac9dbSNicholas Bellinger /* 1358c66ac9dbSNicholas Bellinger * res_aptpl_active 1359c66ac9dbSNicholas Bellinger */ 1360c66ac9dbSNicholas Bellinger 1361c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( 1362c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1363c66ac9dbSNicholas Bellinger char *page) 1364c66ac9dbSNicholas Bellinger { 13656708bb27SAndy Grover if (!su_dev->se_dev_ptr) 1366c66ac9dbSNicholas Bellinger return -ENODEV; 1367c66ac9dbSNicholas Bellinger 1368e3d6f909SAndy Grover if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1369c66ac9dbSNicholas Bellinger return 0; 1370c66ac9dbSNicholas Bellinger 1371c66ac9dbSNicholas Bellinger return sprintf(page, "APTPL Bit Status: %s\n", 1372e3d6f909SAndy Grover (su_dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1373c66ac9dbSNicholas Bellinger } 1374c66ac9dbSNicholas Bellinger 1375c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_aptpl_active); 1376c66ac9dbSNicholas Bellinger 1377c66ac9dbSNicholas Bellinger /* 1378c66ac9dbSNicholas Bellinger * res_aptpl_metadata 1379c66ac9dbSNicholas Bellinger */ 1380c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( 1381c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1382c66ac9dbSNicholas Bellinger char *page) 1383c66ac9dbSNicholas Bellinger { 13846708bb27SAndy Grover if (!su_dev->se_dev_ptr) 1385c66ac9dbSNicholas Bellinger return -ENODEV; 1386c66ac9dbSNicholas Bellinger 1387e3d6f909SAndy Grover if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1388c66ac9dbSNicholas Bellinger return 0; 1389c66ac9dbSNicholas Bellinger 1390c66ac9dbSNicholas Bellinger return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1391c66ac9dbSNicholas Bellinger } 1392c66ac9dbSNicholas Bellinger 1393c66ac9dbSNicholas Bellinger enum { 1394c66ac9dbSNicholas Bellinger Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1395c66ac9dbSNicholas Bellinger Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1396c66ac9dbSNicholas Bellinger Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1397c66ac9dbSNicholas Bellinger Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1398c66ac9dbSNicholas Bellinger }; 1399c66ac9dbSNicholas Bellinger 1400c66ac9dbSNicholas Bellinger static match_table_t tokens = { 1401c66ac9dbSNicholas Bellinger {Opt_initiator_fabric, "initiator_fabric=%s"}, 1402c66ac9dbSNicholas Bellinger {Opt_initiator_node, "initiator_node=%s"}, 1403c66ac9dbSNicholas Bellinger {Opt_initiator_sid, "initiator_sid=%s"}, 1404c66ac9dbSNicholas Bellinger {Opt_sa_res_key, "sa_res_key=%s"}, 1405c66ac9dbSNicholas Bellinger {Opt_res_holder, "res_holder=%d"}, 1406c66ac9dbSNicholas Bellinger {Opt_res_type, "res_type=%d"}, 1407c66ac9dbSNicholas Bellinger {Opt_res_scope, "res_scope=%d"}, 1408c66ac9dbSNicholas Bellinger {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1409c66ac9dbSNicholas Bellinger {Opt_mapped_lun, "mapped_lun=%d"}, 1410c66ac9dbSNicholas Bellinger {Opt_target_fabric, "target_fabric=%s"}, 1411c66ac9dbSNicholas Bellinger {Opt_target_node, "target_node=%s"}, 1412c66ac9dbSNicholas Bellinger {Opt_tpgt, "tpgt=%d"}, 1413c66ac9dbSNicholas Bellinger {Opt_port_rtpi, "port_rtpi=%d"}, 1414c66ac9dbSNicholas Bellinger {Opt_target_lun, "target_lun=%d"}, 1415c66ac9dbSNicholas Bellinger {Opt_err, NULL} 1416c66ac9dbSNicholas Bellinger }; 1417c66ac9dbSNicholas Bellinger 1418c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( 1419c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev, 1420c66ac9dbSNicholas Bellinger const char *page, 1421c66ac9dbSNicholas Bellinger size_t count) 1422c66ac9dbSNicholas Bellinger { 1423c66ac9dbSNicholas Bellinger struct se_device *dev; 14246d180253SJesper Juhl unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 14256d180253SJesper Juhl unsigned char *t_fabric = NULL, *t_port = NULL; 1426c66ac9dbSNicholas Bellinger char *orig, *ptr, *arg_p, *opts; 1427c66ac9dbSNicholas Bellinger substring_t args[MAX_OPT_ARGS]; 1428c66ac9dbSNicholas Bellinger unsigned long long tmp_ll; 1429c66ac9dbSNicholas Bellinger u64 sa_res_key = 0; 1430c66ac9dbSNicholas Bellinger u32 mapped_lun = 0, target_lun = 0; 1431c66ac9dbSNicholas Bellinger int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 1432c66ac9dbSNicholas Bellinger u16 port_rpti = 0, tpgt = 0; 1433c66ac9dbSNicholas Bellinger u8 type = 0, scope; 1434c66ac9dbSNicholas Bellinger 1435c66ac9dbSNicholas Bellinger dev = su_dev->se_dev_ptr; 14366708bb27SAndy Grover if (!dev) 1437c66ac9dbSNicholas Bellinger return -ENODEV; 1438c66ac9dbSNicholas Bellinger 1439e3d6f909SAndy Grover if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1440c66ac9dbSNicholas Bellinger return 0; 1441c66ac9dbSNicholas Bellinger 1442c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 14436708bb27SAndy Grover pr_debug("Unable to process APTPL metadata while" 1444c66ac9dbSNicholas Bellinger " active fabric exports exist\n"); 1445c66ac9dbSNicholas Bellinger return -EINVAL; 1446c66ac9dbSNicholas Bellinger } 1447c66ac9dbSNicholas Bellinger 1448c66ac9dbSNicholas Bellinger opts = kstrdup(page, GFP_KERNEL); 1449c66ac9dbSNicholas Bellinger if (!opts) 1450c66ac9dbSNicholas Bellinger return -ENOMEM; 1451c66ac9dbSNicholas Bellinger 1452c66ac9dbSNicholas Bellinger orig = opts; 145390c161b6SSebastian Andrzej Siewior while ((ptr = strsep(&opts, ",\n")) != NULL) { 1454c66ac9dbSNicholas Bellinger if (!*ptr) 1455c66ac9dbSNicholas Bellinger continue; 1456c66ac9dbSNicholas Bellinger 1457c66ac9dbSNicholas Bellinger token = match_token(ptr, tokens, args); 1458c66ac9dbSNicholas Bellinger switch (token) { 1459c66ac9dbSNicholas Bellinger case Opt_initiator_fabric: 1460c66ac9dbSNicholas Bellinger i_fabric = match_strdup(&args[0]); 14616d180253SJesper Juhl if (!i_fabric) { 14626d180253SJesper Juhl ret = -ENOMEM; 14636d180253SJesper Juhl goto out; 14646d180253SJesper Juhl } 1465c66ac9dbSNicholas Bellinger break; 1466c66ac9dbSNicholas Bellinger case Opt_initiator_node: 1467c66ac9dbSNicholas Bellinger i_port = match_strdup(&args[0]); 14686d180253SJesper Juhl if (!i_port) { 14696d180253SJesper Juhl ret = -ENOMEM; 14706d180253SJesper Juhl goto out; 14716d180253SJesper Juhl } 147260d645a4SDan Carpenter if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 14736708bb27SAndy Grover pr_err("APTPL metadata initiator_node=" 1474c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 1475c66ac9dbSNicholas Bellinger PR_APTPL_MAX_IPORT_LEN); 1476c66ac9dbSNicholas Bellinger ret = -EINVAL; 1477c66ac9dbSNicholas Bellinger break; 1478c66ac9dbSNicholas Bellinger } 1479c66ac9dbSNicholas Bellinger break; 1480c66ac9dbSNicholas Bellinger case Opt_initiator_sid: 1481c66ac9dbSNicholas Bellinger isid = match_strdup(&args[0]); 14826d180253SJesper Juhl if (!isid) { 14836d180253SJesper Juhl ret = -ENOMEM; 14846d180253SJesper Juhl goto out; 14856d180253SJesper Juhl } 148660d645a4SDan Carpenter if (strlen(isid) >= PR_REG_ISID_LEN) { 14876708bb27SAndy Grover pr_err("APTPL metadata initiator_isid" 1488c66ac9dbSNicholas Bellinger "= exceeds PR_REG_ISID_LEN: %d\n", 1489c66ac9dbSNicholas Bellinger PR_REG_ISID_LEN); 1490c66ac9dbSNicholas Bellinger ret = -EINVAL; 1491c66ac9dbSNicholas Bellinger break; 1492c66ac9dbSNicholas Bellinger } 1493c66ac9dbSNicholas Bellinger break; 1494c66ac9dbSNicholas Bellinger case Opt_sa_res_key: 1495c66ac9dbSNicholas Bellinger arg_p = match_strdup(&args[0]); 14966d180253SJesper Juhl if (!arg_p) { 14976d180253SJesper Juhl ret = -ENOMEM; 14986d180253SJesper Juhl goto out; 14996d180253SJesper Juhl } 1500c66ac9dbSNicholas Bellinger ret = strict_strtoull(arg_p, 0, &tmp_ll); 1501c66ac9dbSNicholas Bellinger if (ret < 0) { 15026708bb27SAndy Grover pr_err("strict_strtoull() failed for" 1503c66ac9dbSNicholas Bellinger " sa_res_key=\n"); 1504c66ac9dbSNicholas Bellinger goto out; 1505c66ac9dbSNicholas Bellinger } 1506c66ac9dbSNicholas Bellinger sa_res_key = (u64)tmp_ll; 1507c66ac9dbSNicholas Bellinger break; 1508c66ac9dbSNicholas Bellinger /* 1509c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Reservation 1510c66ac9dbSNicholas Bellinger */ 1511c66ac9dbSNicholas Bellinger case Opt_res_holder: 1512c66ac9dbSNicholas Bellinger match_int(args, &arg); 1513c66ac9dbSNicholas Bellinger res_holder = arg; 1514c66ac9dbSNicholas Bellinger break; 1515c66ac9dbSNicholas Bellinger case Opt_res_type: 1516c66ac9dbSNicholas Bellinger match_int(args, &arg); 1517c66ac9dbSNicholas Bellinger type = (u8)arg; 1518c66ac9dbSNicholas Bellinger break; 1519c66ac9dbSNicholas Bellinger case Opt_res_scope: 1520c66ac9dbSNicholas Bellinger match_int(args, &arg); 1521c66ac9dbSNicholas Bellinger scope = (u8)arg; 1522c66ac9dbSNicholas Bellinger break; 1523c66ac9dbSNicholas Bellinger case Opt_res_all_tg_pt: 1524c66ac9dbSNicholas Bellinger match_int(args, &arg); 1525c66ac9dbSNicholas Bellinger all_tg_pt = (int)arg; 1526c66ac9dbSNicholas Bellinger break; 1527c66ac9dbSNicholas Bellinger case Opt_mapped_lun: 1528c66ac9dbSNicholas Bellinger match_int(args, &arg); 1529c66ac9dbSNicholas Bellinger mapped_lun = (u32)arg; 1530c66ac9dbSNicholas Bellinger break; 1531c66ac9dbSNicholas Bellinger /* 1532c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Target Port 1533c66ac9dbSNicholas Bellinger */ 1534c66ac9dbSNicholas Bellinger case Opt_target_fabric: 1535c66ac9dbSNicholas Bellinger t_fabric = match_strdup(&args[0]); 15366d180253SJesper Juhl if (!t_fabric) { 15376d180253SJesper Juhl ret = -ENOMEM; 15386d180253SJesper Juhl goto out; 15396d180253SJesper Juhl } 1540c66ac9dbSNicholas Bellinger break; 1541c66ac9dbSNicholas Bellinger case Opt_target_node: 1542c66ac9dbSNicholas Bellinger t_port = match_strdup(&args[0]); 15436d180253SJesper Juhl if (!t_port) { 15446d180253SJesper Juhl ret = -ENOMEM; 15456d180253SJesper Juhl goto out; 15466d180253SJesper Juhl } 154760d645a4SDan Carpenter if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 15486708bb27SAndy Grover pr_err("APTPL metadata target_node=" 1549c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 1550c66ac9dbSNicholas Bellinger PR_APTPL_MAX_TPORT_LEN); 1551c66ac9dbSNicholas Bellinger ret = -EINVAL; 1552c66ac9dbSNicholas Bellinger break; 1553c66ac9dbSNicholas Bellinger } 1554c66ac9dbSNicholas Bellinger break; 1555c66ac9dbSNicholas Bellinger case Opt_tpgt: 1556c66ac9dbSNicholas Bellinger match_int(args, &arg); 1557c66ac9dbSNicholas Bellinger tpgt = (u16)arg; 1558c66ac9dbSNicholas Bellinger break; 1559c66ac9dbSNicholas Bellinger case Opt_port_rtpi: 1560c66ac9dbSNicholas Bellinger match_int(args, &arg); 1561c66ac9dbSNicholas Bellinger port_rpti = (u16)arg; 1562c66ac9dbSNicholas Bellinger break; 1563c66ac9dbSNicholas Bellinger case Opt_target_lun: 1564c66ac9dbSNicholas Bellinger match_int(args, &arg); 1565c66ac9dbSNicholas Bellinger target_lun = (u32)arg; 1566c66ac9dbSNicholas Bellinger break; 1567c66ac9dbSNicholas Bellinger default: 1568c66ac9dbSNicholas Bellinger break; 1569c66ac9dbSNicholas Bellinger } 1570c66ac9dbSNicholas Bellinger } 1571c66ac9dbSNicholas Bellinger 15726708bb27SAndy Grover if (!i_port || !t_port || !sa_res_key) { 15736708bb27SAndy Grover pr_err("Illegal parameters for APTPL registration\n"); 1574c66ac9dbSNicholas Bellinger ret = -EINVAL; 1575c66ac9dbSNicholas Bellinger goto out; 1576c66ac9dbSNicholas Bellinger } 1577c66ac9dbSNicholas Bellinger 1578c66ac9dbSNicholas Bellinger if (res_holder && !(type)) { 15796708bb27SAndy Grover pr_err("Illegal PR type: 0x%02x for reservation" 1580c66ac9dbSNicholas Bellinger " holder\n", type); 1581c66ac9dbSNicholas Bellinger ret = -EINVAL; 1582c66ac9dbSNicholas Bellinger goto out; 1583c66ac9dbSNicholas Bellinger } 1584c66ac9dbSNicholas Bellinger 1585e3d6f909SAndy Grover ret = core_scsi3_alloc_aptpl_registration(&su_dev->t10_pr, sa_res_key, 1586c66ac9dbSNicholas Bellinger i_port, isid, mapped_lun, t_port, tpgt, target_lun, 1587c66ac9dbSNicholas Bellinger res_holder, all_tg_pt, type); 1588c66ac9dbSNicholas Bellinger out: 15896d180253SJesper Juhl kfree(i_fabric); 15906d180253SJesper Juhl kfree(i_port); 15916d180253SJesper Juhl kfree(isid); 15926d180253SJesper Juhl kfree(t_fabric); 15936d180253SJesper Juhl kfree(t_port); 1594c66ac9dbSNicholas Bellinger kfree(orig); 1595c66ac9dbSNicholas Bellinger return (ret == 0) ? count : ret; 1596c66ac9dbSNicholas Bellinger } 1597c66ac9dbSNicholas Bellinger 1598c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); 1599c66ac9dbSNicholas Bellinger 1600c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group); 1601c66ac9dbSNicholas Bellinger 1602c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_pr_attrs[] = { 1603c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_holder.attr, 1604c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_all_tgt_pts.attr, 1605c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_generation.attr, 1606c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_holder_tg_port.attr, 1607c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_registered_i_pts.attr, 1608c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_type.attr, 1609c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_type.attr, 1610c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_active.attr, 1611c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_metadata.attr, 1612c66ac9dbSNicholas Bellinger NULL, 1613c66ac9dbSNicholas Bellinger }; 1614c66ac9dbSNicholas Bellinger 1615c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_pr_ops = { 1616c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_pr_attr_show, 1617c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_pr_attr_store, 1618c66ac9dbSNicholas Bellinger }; 1619c66ac9dbSNicholas Bellinger 1620c66ac9dbSNicholas Bellinger static struct config_item_type target_core_dev_pr_cit = { 1621c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_dev_pr_ops, 1622c66ac9dbSNicholas Bellinger .ct_attrs = target_core_dev_pr_attrs, 1623c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 1624c66ac9dbSNicholas Bellinger }; 1625c66ac9dbSNicholas Bellinger 1626c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_dev_pr_cit */ 1627c66ac9dbSNicholas Bellinger 1628c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_dev_cit */ 1629c66ac9dbSNicholas Bellinger 1630c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_info(void *p, char *page) 1631c66ac9dbSNicholas Bellinger { 16328359cf43SJörn Engel struct se_subsystem_dev *se_dev = p; 1633c66ac9dbSNicholas Bellinger struct se_hba *hba = se_dev->se_dev_hba; 1634c66ac9dbSNicholas Bellinger struct se_subsystem_api *t = hba->transport; 1635c66ac9dbSNicholas Bellinger int bl = 0; 1636c66ac9dbSNicholas Bellinger ssize_t read_bytes = 0; 1637c66ac9dbSNicholas Bellinger 16386708bb27SAndy Grover if (!se_dev->se_dev_ptr) 1639c66ac9dbSNicholas Bellinger return -ENODEV; 1640c66ac9dbSNicholas Bellinger 1641c66ac9dbSNicholas Bellinger transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl); 1642c66ac9dbSNicholas Bellinger read_bytes += bl; 1643c66ac9dbSNicholas Bellinger read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes); 1644c66ac9dbSNicholas Bellinger return read_bytes; 1645c66ac9dbSNicholas Bellinger } 1646c66ac9dbSNicholas Bellinger 1647c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_info = { 1648c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1649c66ac9dbSNicholas Bellinger .ca_name = "info", 1650c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO }, 1651c66ac9dbSNicholas Bellinger .show = target_core_show_dev_info, 1652c66ac9dbSNicholas Bellinger .store = NULL, 1653c66ac9dbSNicholas Bellinger }; 1654c66ac9dbSNicholas Bellinger 1655c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_control( 1656c66ac9dbSNicholas Bellinger void *p, 1657c66ac9dbSNicholas Bellinger const char *page, 1658c66ac9dbSNicholas Bellinger size_t count) 1659c66ac9dbSNicholas Bellinger { 16608359cf43SJörn Engel struct se_subsystem_dev *se_dev = p; 1661c66ac9dbSNicholas Bellinger struct se_hba *hba = se_dev->se_dev_hba; 1662c66ac9dbSNicholas Bellinger struct se_subsystem_api *t = hba->transport; 1663c66ac9dbSNicholas Bellinger 16646708bb27SAndy Grover if (!se_dev->se_dev_su_ptr) { 16656708bb27SAndy Grover pr_err("Unable to locate struct se_subsystem_dev>se" 1666c66ac9dbSNicholas Bellinger "_dev_su_ptr\n"); 1667c66ac9dbSNicholas Bellinger return -EINVAL; 1668c66ac9dbSNicholas Bellinger } 1669c66ac9dbSNicholas Bellinger 1670c66ac9dbSNicholas Bellinger return t->set_configfs_dev_params(hba, se_dev, page, count); 1671c66ac9dbSNicholas Bellinger } 1672c66ac9dbSNicholas Bellinger 1673c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_control = { 1674c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1675c66ac9dbSNicholas Bellinger .ca_name = "control", 1676c66ac9dbSNicholas Bellinger .ca_mode = S_IWUSR }, 1677c66ac9dbSNicholas Bellinger .show = NULL, 1678c66ac9dbSNicholas Bellinger .store = target_core_store_dev_control, 1679c66ac9dbSNicholas Bellinger }; 1680c66ac9dbSNicholas Bellinger 1681c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_alias(void *p, char *page) 1682c66ac9dbSNicholas Bellinger { 16838359cf43SJörn Engel struct se_subsystem_dev *se_dev = p; 1684c66ac9dbSNicholas Bellinger 1685c66ac9dbSNicholas Bellinger if (!(se_dev->su_dev_flags & SDF_USING_ALIAS)) 1686c66ac9dbSNicholas Bellinger return 0; 1687c66ac9dbSNicholas Bellinger 1688c66ac9dbSNicholas Bellinger return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias); 1689c66ac9dbSNicholas Bellinger } 1690c66ac9dbSNicholas Bellinger 1691c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_alias( 1692c66ac9dbSNicholas Bellinger void *p, 1693c66ac9dbSNicholas Bellinger const char *page, 1694c66ac9dbSNicholas Bellinger size_t count) 1695c66ac9dbSNicholas Bellinger { 16968359cf43SJörn Engel struct se_subsystem_dev *se_dev = p; 1697c66ac9dbSNicholas Bellinger struct se_hba *hba = se_dev->se_dev_hba; 1698c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1699c66ac9dbSNicholas Bellinger 1700c66ac9dbSNicholas Bellinger if (count > (SE_DEV_ALIAS_LEN-1)) { 17016708bb27SAndy Grover pr_err("alias count: %d exceeds" 1702c66ac9dbSNicholas Bellinger " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 1703c66ac9dbSNicholas Bellinger SE_DEV_ALIAS_LEN-1); 1704c66ac9dbSNicholas Bellinger return -EINVAL; 1705c66ac9dbSNicholas Bellinger } 1706c66ac9dbSNicholas Bellinger 1707c66ac9dbSNicholas Bellinger se_dev->su_dev_flags |= SDF_USING_ALIAS; 1708c66ac9dbSNicholas Bellinger read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN, 1709c66ac9dbSNicholas Bellinger "%s", page); 1710c66ac9dbSNicholas Bellinger 17110877eafdSSebastian Andrzej Siewior if (se_dev->se_dev_alias[read_bytes - 1] == '\n') 17120877eafdSSebastian Andrzej Siewior se_dev->se_dev_alias[read_bytes - 1] = '\0'; 17130877eafdSSebastian Andrzej Siewior 17146708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 1715c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 1716c66ac9dbSNicholas Bellinger config_item_name(&se_dev->se_dev_group.cg_item), 1717c66ac9dbSNicholas Bellinger se_dev->se_dev_alias); 1718c66ac9dbSNicholas Bellinger 1719c66ac9dbSNicholas Bellinger return read_bytes; 1720c66ac9dbSNicholas Bellinger } 1721c66ac9dbSNicholas Bellinger 1722c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alias = { 1723c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1724c66ac9dbSNicholas Bellinger .ca_name = "alias", 1725c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1726c66ac9dbSNicholas Bellinger .show = target_core_show_dev_alias, 1727c66ac9dbSNicholas Bellinger .store = target_core_store_dev_alias, 1728c66ac9dbSNicholas Bellinger }; 1729c66ac9dbSNicholas Bellinger 1730c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_udev_path(void *p, char *page) 1731c66ac9dbSNicholas Bellinger { 17328359cf43SJörn Engel struct se_subsystem_dev *se_dev = p; 1733c66ac9dbSNicholas Bellinger 1734c66ac9dbSNicholas Bellinger if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) 1735c66ac9dbSNicholas Bellinger return 0; 1736c66ac9dbSNicholas Bellinger 1737c66ac9dbSNicholas Bellinger return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path); 1738c66ac9dbSNicholas Bellinger } 1739c66ac9dbSNicholas Bellinger 1740c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_udev_path( 1741c66ac9dbSNicholas Bellinger void *p, 1742c66ac9dbSNicholas Bellinger const char *page, 1743c66ac9dbSNicholas Bellinger size_t count) 1744c66ac9dbSNicholas Bellinger { 17458359cf43SJörn Engel struct se_subsystem_dev *se_dev = p; 1746c66ac9dbSNicholas Bellinger struct se_hba *hba = se_dev->se_dev_hba; 1747c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1748c66ac9dbSNicholas Bellinger 1749c66ac9dbSNicholas Bellinger if (count > (SE_UDEV_PATH_LEN-1)) { 17506708bb27SAndy Grover pr_err("udev_path count: %d exceeds" 1751c66ac9dbSNicholas Bellinger " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 1752c66ac9dbSNicholas Bellinger SE_UDEV_PATH_LEN-1); 1753c66ac9dbSNicholas Bellinger return -EINVAL; 1754c66ac9dbSNicholas Bellinger } 1755c66ac9dbSNicholas Bellinger 1756c66ac9dbSNicholas Bellinger se_dev->su_dev_flags |= SDF_USING_UDEV_PATH; 1757c66ac9dbSNicholas Bellinger read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN, 1758c66ac9dbSNicholas Bellinger "%s", page); 1759c66ac9dbSNicholas Bellinger 17600877eafdSSebastian Andrzej Siewior if (se_dev->se_dev_udev_path[read_bytes - 1] == '\n') 17610877eafdSSebastian Andrzej Siewior se_dev->se_dev_udev_path[read_bytes - 1] = '\0'; 17620877eafdSSebastian Andrzej Siewior 17636708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 1764c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 1765c66ac9dbSNicholas Bellinger config_item_name(&se_dev->se_dev_group.cg_item), 1766c66ac9dbSNicholas Bellinger se_dev->se_dev_udev_path); 1767c66ac9dbSNicholas Bellinger 1768c66ac9dbSNicholas Bellinger return read_bytes; 1769c66ac9dbSNicholas Bellinger } 1770c66ac9dbSNicholas Bellinger 1771c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { 1772c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1773c66ac9dbSNicholas Bellinger .ca_name = "udev_path", 1774c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1775c66ac9dbSNicholas Bellinger .show = target_core_show_dev_udev_path, 1776c66ac9dbSNicholas Bellinger .store = target_core_store_dev_udev_path, 1777c66ac9dbSNicholas Bellinger }; 1778c66ac9dbSNicholas Bellinger 1779c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_enable( 1780c66ac9dbSNicholas Bellinger void *p, 1781c66ac9dbSNicholas Bellinger const char *page, 1782c66ac9dbSNicholas Bellinger size_t count) 1783c66ac9dbSNicholas Bellinger { 17848359cf43SJörn Engel struct se_subsystem_dev *se_dev = p; 1785c66ac9dbSNicholas Bellinger struct se_device *dev; 1786c66ac9dbSNicholas Bellinger struct se_hba *hba = se_dev->se_dev_hba; 1787c66ac9dbSNicholas Bellinger struct se_subsystem_api *t = hba->transport; 1788c66ac9dbSNicholas Bellinger char *ptr; 1789c66ac9dbSNicholas Bellinger 1790c66ac9dbSNicholas Bellinger ptr = strstr(page, "1"); 17916708bb27SAndy Grover if (!ptr) { 17926708bb27SAndy Grover pr_err("For dev_enable ops, only valid value" 1793c66ac9dbSNicholas Bellinger " is \"1\"\n"); 1794c66ac9dbSNicholas Bellinger return -EINVAL; 1795c66ac9dbSNicholas Bellinger } 17966708bb27SAndy Grover if (se_dev->se_dev_ptr) { 17976708bb27SAndy Grover pr_err("se_dev->se_dev_ptr already set for storage" 1798c66ac9dbSNicholas Bellinger " object\n"); 1799c66ac9dbSNicholas Bellinger return -EEXIST; 1800c66ac9dbSNicholas Bellinger } 1801c66ac9dbSNicholas Bellinger 1802c66ac9dbSNicholas Bellinger if (t->check_configfs_dev_params(hba, se_dev) < 0) 1803c66ac9dbSNicholas Bellinger return -EINVAL; 1804c66ac9dbSNicholas Bellinger 1805c66ac9dbSNicholas Bellinger dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); 1806613640e4SNicholas Bellinger if (IS_ERR(dev)) 1807613640e4SNicholas Bellinger return PTR_ERR(dev); 1808613640e4SNicholas Bellinger else if (!dev) 1809c66ac9dbSNicholas Bellinger return -EINVAL; 1810c66ac9dbSNicholas Bellinger 1811c66ac9dbSNicholas Bellinger se_dev->se_dev_ptr = dev; 18126708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:" 1813c66ac9dbSNicholas Bellinger " %p\n", se_dev->se_dev_ptr); 1814c66ac9dbSNicholas Bellinger 1815c66ac9dbSNicholas Bellinger return count; 1816c66ac9dbSNicholas Bellinger } 1817c66ac9dbSNicholas Bellinger 1818c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_enable = { 1819c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1820c66ac9dbSNicholas Bellinger .ca_name = "enable", 1821c66ac9dbSNicholas Bellinger .ca_mode = S_IWUSR }, 1822c66ac9dbSNicholas Bellinger .show = NULL, 1823c66ac9dbSNicholas Bellinger .store = target_core_store_dev_enable, 1824c66ac9dbSNicholas Bellinger }; 1825c66ac9dbSNicholas Bellinger 1826c66ac9dbSNicholas Bellinger static ssize_t target_core_show_alua_lu_gp(void *p, char *page) 1827c66ac9dbSNicholas Bellinger { 1828c66ac9dbSNicholas Bellinger struct se_device *dev; 18298359cf43SJörn Engel struct se_subsystem_dev *su_dev = p; 1830c66ac9dbSNicholas Bellinger struct config_item *lu_ci; 1831c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 1832c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1833c66ac9dbSNicholas Bellinger ssize_t len = 0; 1834c66ac9dbSNicholas Bellinger 1835c66ac9dbSNicholas Bellinger dev = su_dev->se_dev_ptr; 18366708bb27SAndy Grover if (!dev) 1837c66ac9dbSNicholas Bellinger return -ENODEV; 1838c66ac9dbSNicholas Bellinger 1839e3d6f909SAndy Grover if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) 1840c66ac9dbSNicholas Bellinger return len; 1841c66ac9dbSNicholas Bellinger 1842c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 18436708bb27SAndy Grover if (!lu_gp_mem) { 18446708bb27SAndy Grover pr_err("NULL struct se_device->dev_alua_lu_gp_mem" 1845c66ac9dbSNicholas Bellinger " pointer\n"); 1846c66ac9dbSNicholas Bellinger return -EINVAL; 1847c66ac9dbSNicholas Bellinger } 1848c66ac9dbSNicholas Bellinger 1849c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1850c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 18516708bb27SAndy Grover if (lu_gp) { 1852c66ac9dbSNicholas Bellinger lu_ci = &lu_gp->lu_gp_group.cg_item; 1853c66ac9dbSNicholas Bellinger len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 1854c66ac9dbSNicholas Bellinger config_item_name(lu_ci), lu_gp->lu_gp_id); 1855c66ac9dbSNicholas Bellinger } 1856c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1857c66ac9dbSNicholas Bellinger 1858c66ac9dbSNicholas Bellinger return len; 1859c66ac9dbSNicholas Bellinger } 1860c66ac9dbSNicholas Bellinger 1861c66ac9dbSNicholas Bellinger static ssize_t target_core_store_alua_lu_gp( 1862c66ac9dbSNicholas Bellinger void *p, 1863c66ac9dbSNicholas Bellinger const char *page, 1864c66ac9dbSNicholas Bellinger size_t count) 1865c66ac9dbSNicholas Bellinger { 1866c66ac9dbSNicholas Bellinger struct se_device *dev; 18678359cf43SJörn Engel struct se_subsystem_dev *su_dev = p; 1868c66ac9dbSNicholas Bellinger struct se_hba *hba = su_dev->se_dev_hba; 1869c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 1870c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1871c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 1872c66ac9dbSNicholas Bellinger int move = 0; 1873c66ac9dbSNicholas Bellinger 1874c66ac9dbSNicholas Bellinger dev = su_dev->se_dev_ptr; 18756708bb27SAndy Grover if (!dev) 1876c66ac9dbSNicholas Bellinger return -ENODEV; 1877c66ac9dbSNicholas Bellinger 1878e3d6f909SAndy Grover if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) { 18796708bb27SAndy Grover pr_warn("SPC3_ALUA_EMULATED not enabled for %s/%s\n", 1880c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 1881c66ac9dbSNicholas Bellinger config_item_name(&su_dev->se_dev_group.cg_item)); 1882c66ac9dbSNicholas Bellinger return -EINVAL; 1883c66ac9dbSNicholas Bellinger } 1884c66ac9dbSNicholas Bellinger if (count > LU_GROUP_NAME_BUF) { 18856708bb27SAndy Grover pr_err("ALUA LU Group Alias too large!\n"); 1886c66ac9dbSNicholas Bellinger return -EINVAL; 1887c66ac9dbSNicholas Bellinger } 1888c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 1889c66ac9dbSNicholas Bellinger memcpy(buf, page, count); 1890c66ac9dbSNicholas Bellinger /* 1891c66ac9dbSNicholas Bellinger * Any ALUA logical unit alias besides "NULL" means we will be 1892c66ac9dbSNicholas Bellinger * making a new group association. 1893c66ac9dbSNicholas Bellinger */ 1894c66ac9dbSNicholas Bellinger if (strcmp(strstrip(buf), "NULL")) { 1895c66ac9dbSNicholas Bellinger /* 1896c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name() will increment reference to 1897c66ac9dbSNicholas Bellinger * struct t10_alua_lu_gp. This reference is released with 1898c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name below(). 1899c66ac9dbSNicholas Bellinger */ 1900c66ac9dbSNicholas Bellinger lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 19016708bb27SAndy Grover if (!lu_gp_new) 1902c66ac9dbSNicholas Bellinger return -ENODEV; 1903c66ac9dbSNicholas Bellinger } 1904c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 19056708bb27SAndy Grover if (!lu_gp_mem) { 1906c66ac9dbSNicholas Bellinger if (lu_gp_new) 1907c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 19086708bb27SAndy Grover pr_err("NULL struct se_device->dev_alua_lu_gp_mem" 1909c66ac9dbSNicholas Bellinger " pointer\n"); 1910c66ac9dbSNicholas Bellinger return -EINVAL; 1911c66ac9dbSNicholas Bellinger } 1912c66ac9dbSNicholas Bellinger 1913c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1914c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 19156708bb27SAndy Grover if (lu_gp) { 1916c66ac9dbSNicholas Bellinger /* 1917c66ac9dbSNicholas Bellinger * Clearing an existing lu_gp association, and replacing 1918c66ac9dbSNicholas Bellinger * with NULL 1919c66ac9dbSNicholas Bellinger */ 19206708bb27SAndy Grover if (!lu_gp_new) { 19216708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 1922c66ac9dbSNicholas Bellinger " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 1923c66ac9dbSNicholas Bellinger " %hu\n", 1924c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 1925c66ac9dbSNicholas Bellinger config_item_name(&su_dev->se_dev_group.cg_item), 1926c66ac9dbSNicholas Bellinger config_item_name(&lu_gp->lu_gp_group.cg_item), 1927c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 1928c66ac9dbSNicholas Bellinger 1929c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1930c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1931c66ac9dbSNicholas Bellinger 1932c66ac9dbSNicholas Bellinger return count; 1933c66ac9dbSNicholas Bellinger } 1934c66ac9dbSNicholas Bellinger /* 1935c66ac9dbSNicholas Bellinger * Removing existing association of lu_gp_mem with lu_gp 1936c66ac9dbSNicholas Bellinger */ 1937c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1938c66ac9dbSNicholas Bellinger move = 1; 1939c66ac9dbSNicholas Bellinger } 1940c66ac9dbSNicholas Bellinger /* 1941c66ac9dbSNicholas Bellinger * Associate lu_gp_mem with lu_gp_new. 1942c66ac9dbSNicholas Bellinger */ 1943c66ac9dbSNicholas Bellinger __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 1944c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1945c66ac9dbSNicholas Bellinger 19466708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 1947c66ac9dbSNicholas Bellinger " core/alua/lu_gps/%s, ID: %hu\n", 1948c66ac9dbSNicholas Bellinger (move) ? "Moving" : "Adding", 1949c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 1950c66ac9dbSNicholas Bellinger config_item_name(&su_dev->se_dev_group.cg_item), 1951c66ac9dbSNicholas Bellinger config_item_name(&lu_gp_new->lu_gp_group.cg_item), 1952c66ac9dbSNicholas Bellinger lu_gp_new->lu_gp_id); 1953c66ac9dbSNicholas Bellinger 1954c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 1955c66ac9dbSNicholas Bellinger return count; 1956c66ac9dbSNicholas Bellinger } 1957c66ac9dbSNicholas Bellinger 1958c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { 1959c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1960c66ac9dbSNicholas Bellinger .ca_name = "alua_lu_gp", 1961c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1962c66ac9dbSNicholas Bellinger .show = target_core_show_alua_lu_gp, 1963c66ac9dbSNicholas Bellinger .store = target_core_store_alua_lu_gp, 1964c66ac9dbSNicholas Bellinger }; 1965c66ac9dbSNicholas Bellinger 1966c66ac9dbSNicholas Bellinger static struct configfs_attribute *lio_core_dev_attrs[] = { 1967c66ac9dbSNicholas Bellinger &target_core_attr_dev_info.attr, 1968c66ac9dbSNicholas Bellinger &target_core_attr_dev_control.attr, 1969c66ac9dbSNicholas Bellinger &target_core_attr_dev_alias.attr, 1970c66ac9dbSNicholas Bellinger &target_core_attr_dev_udev_path.attr, 1971c66ac9dbSNicholas Bellinger &target_core_attr_dev_enable.attr, 1972c66ac9dbSNicholas Bellinger &target_core_attr_dev_alua_lu_gp.attr, 1973c66ac9dbSNicholas Bellinger NULL, 1974c66ac9dbSNicholas Bellinger }; 1975c66ac9dbSNicholas Bellinger 1976c66ac9dbSNicholas Bellinger static void target_core_dev_release(struct config_item *item) 1977c66ac9dbSNicholas Bellinger { 1978c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = container_of(to_config_group(item), 1979c66ac9dbSNicholas Bellinger struct se_subsystem_dev, se_dev_group); 19801f6fe7cbSNicholas Bellinger struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); 19811f6fe7cbSNicholas Bellinger struct se_subsystem_api *t = hba->transport; 19821f6fe7cbSNicholas Bellinger struct config_group *dev_cg = &se_dev->se_dev_group; 1983c66ac9dbSNicholas Bellinger 1984c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 19851f6fe7cbSNicholas Bellinger /* 19861f6fe7cbSNicholas Bellinger * This pointer will set when the storage is enabled with: 19871f6fe7cbSNicholas Bellinger *`echo 1 > $CONFIGFS/core/$HBA/$DEV/dev_enable` 19881f6fe7cbSNicholas Bellinger */ 19891f6fe7cbSNicholas Bellinger if (se_dev->se_dev_ptr) { 19906708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Calling se_free_" 19911f6fe7cbSNicholas Bellinger "virtual_device() for se_dev_ptr: %p\n", 19921f6fe7cbSNicholas Bellinger se_dev->se_dev_ptr); 19931f6fe7cbSNicholas Bellinger 19941f6fe7cbSNicholas Bellinger se_free_virtual_device(se_dev->se_dev_ptr, hba); 19951f6fe7cbSNicholas Bellinger } else { 19961f6fe7cbSNicholas Bellinger /* 19971f6fe7cbSNicholas Bellinger * Release struct se_subsystem_dev->se_dev_su_ptr.. 19981f6fe7cbSNicholas Bellinger */ 19996708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Calling t->free_" 20001f6fe7cbSNicholas Bellinger "device() for se_dev_su_ptr: %p\n", 20011f6fe7cbSNicholas Bellinger se_dev->se_dev_su_ptr); 20021f6fe7cbSNicholas Bellinger 20031f6fe7cbSNicholas Bellinger t->free_device(se_dev->se_dev_su_ptr); 20041f6fe7cbSNicholas Bellinger } 20051f6fe7cbSNicholas Bellinger 20066708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Deallocating se_subsystem" 20071f6fe7cbSNicholas Bellinger "_dev_t: %p\n", se_dev); 20081f6fe7cbSNicholas Bellinger kfree(se_dev); 2009c66ac9dbSNicholas Bellinger } 2010c66ac9dbSNicholas Bellinger 2011c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_show(struct config_item *item, 2012c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 2013c66ac9dbSNicholas Bellinger char *page) 2014c66ac9dbSNicholas Bellinger { 2015c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = container_of( 2016c66ac9dbSNicholas Bellinger to_config_group(item), struct se_subsystem_dev, 2017c66ac9dbSNicholas Bellinger se_dev_group); 2018c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 2019c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 2020c66ac9dbSNicholas Bellinger 20216708bb27SAndy Grover if (!tc_attr->show) 2022c66ac9dbSNicholas Bellinger return -EINVAL; 2023c66ac9dbSNicholas Bellinger 20245951146dSAndy Grover return tc_attr->show(se_dev, page); 2025c66ac9dbSNicholas Bellinger } 2026c66ac9dbSNicholas Bellinger 2027c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_store(struct config_item *item, 2028c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 2029c66ac9dbSNicholas Bellinger const char *page, size_t count) 2030c66ac9dbSNicholas Bellinger { 2031c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = container_of( 2032c66ac9dbSNicholas Bellinger to_config_group(item), struct se_subsystem_dev, 2033c66ac9dbSNicholas Bellinger se_dev_group); 2034c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 2035c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 2036c66ac9dbSNicholas Bellinger 20376708bb27SAndy Grover if (!tc_attr->store) 2038c66ac9dbSNicholas Bellinger return -EINVAL; 2039c66ac9dbSNicholas Bellinger 20405951146dSAndy Grover return tc_attr->store(se_dev, page, count); 2041c66ac9dbSNicholas Bellinger } 2042c66ac9dbSNicholas Bellinger 2043c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_item_ops = { 2044c66ac9dbSNicholas Bellinger .release = target_core_dev_release, 2045c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_show, 2046c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_store, 2047c66ac9dbSNicholas Bellinger }; 2048c66ac9dbSNicholas Bellinger 2049c66ac9dbSNicholas Bellinger static struct config_item_type target_core_dev_cit = { 2050c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_dev_item_ops, 2051c66ac9dbSNicholas Bellinger .ct_attrs = lio_core_dev_attrs, 2052c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2053c66ac9dbSNicholas Bellinger }; 2054c66ac9dbSNicholas Bellinger 2055c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_dev_cit */ 2056c66ac9dbSNicholas Bellinger 2057c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 2058c66ac9dbSNicholas Bellinger 2059c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); 2060c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ 2061c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 2062c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 2063c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2064c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name, \ 2065c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_store_attr_##_name); 2066c66ac9dbSNicholas Bellinger 2067c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ 2068c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 2069c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 2070c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2071c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name); 2072c66ac9dbSNicholas Bellinger 2073c66ac9dbSNicholas Bellinger /* 2074c66ac9dbSNicholas Bellinger * lu_gp_id 2075c66ac9dbSNicholas Bellinger */ 2076c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( 2077c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 2078c66ac9dbSNicholas Bellinger char *page) 2079c66ac9dbSNicholas Bellinger { 20806708bb27SAndy Grover if (!lu_gp->lu_gp_valid_id) 2081c66ac9dbSNicholas Bellinger return 0; 2082c66ac9dbSNicholas Bellinger 2083c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 2084c66ac9dbSNicholas Bellinger } 2085c66ac9dbSNicholas Bellinger 2086c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( 2087c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 2088c66ac9dbSNicholas Bellinger const char *page, 2089c66ac9dbSNicholas Bellinger size_t count) 2090c66ac9dbSNicholas Bellinger { 2091c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 2092c66ac9dbSNicholas Bellinger unsigned long lu_gp_id; 2093c66ac9dbSNicholas Bellinger int ret; 2094c66ac9dbSNicholas Bellinger 2095c66ac9dbSNicholas Bellinger ret = strict_strtoul(page, 0, &lu_gp_id); 2096c66ac9dbSNicholas Bellinger if (ret < 0) { 20976708bb27SAndy Grover pr_err("strict_strtoul() returned %d for" 2098c66ac9dbSNicholas Bellinger " lu_gp_id\n", ret); 2099c66ac9dbSNicholas Bellinger return -EINVAL; 2100c66ac9dbSNicholas Bellinger } 2101c66ac9dbSNicholas Bellinger if (lu_gp_id > 0x0000ffff) { 21026708bb27SAndy Grover pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 2103c66ac9dbSNicholas Bellinger " 0x0000ffff\n", lu_gp_id); 2104c66ac9dbSNicholas Bellinger return -EINVAL; 2105c66ac9dbSNicholas Bellinger } 2106c66ac9dbSNicholas Bellinger 2107c66ac9dbSNicholas Bellinger ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 2108c66ac9dbSNicholas Bellinger if (ret < 0) 2109c66ac9dbSNicholas Bellinger return -EINVAL; 2110c66ac9dbSNicholas Bellinger 21116708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 2112c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s to ID: %hu\n", 2113c66ac9dbSNicholas Bellinger config_item_name(&alua_lu_gp_cg->cg_item), 2114c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2115c66ac9dbSNicholas Bellinger 2116c66ac9dbSNicholas Bellinger return count; 2117c66ac9dbSNicholas Bellinger } 2118c66ac9dbSNicholas Bellinger 2119c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); 2120c66ac9dbSNicholas Bellinger 2121c66ac9dbSNicholas Bellinger /* 2122c66ac9dbSNicholas Bellinger * members 2123c66ac9dbSNicholas Bellinger */ 2124c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_members( 2125c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 2126c66ac9dbSNicholas Bellinger char *page) 2127c66ac9dbSNicholas Bellinger { 2128c66ac9dbSNicholas Bellinger struct se_device *dev; 2129c66ac9dbSNicholas Bellinger struct se_hba *hba; 2130c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev; 2131c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2132c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2133c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 2134c66ac9dbSNicholas Bellinger 2135c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 2136c66ac9dbSNicholas Bellinger 2137c66ac9dbSNicholas Bellinger spin_lock(&lu_gp->lu_gp_lock); 2138c66ac9dbSNicholas Bellinger list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 2139c66ac9dbSNicholas Bellinger dev = lu_gp_mem->lu_gp_mem_dev; 2140c66ac9dbSNicholas Bellinger su_dev = dev->se_sub_dev; 2141c66ac9dbSNicholas Bellinger hba = su_dev->se_dev_hba; 2142c66ac9dbSNicholas Bellinger 2143c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 2144c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 2145c66ac9dbSNicholas Bellinger config_item_name(&su_dev->se_dev_group.cg_item)); 2146c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2147c66ac9dbSNicholas Bellinger 2148c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 21496708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2150c66ac9dbSNicholas Bellinger "_members buffer\n"); 2151c66ac9dbSNicholas Bellinger break; 2152c66ac9dbSNicholas Bellinger } 2153c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2154c66ac9dbSNicholas Bellinger len += cur_len; 2155c66ac9dbSNicholas Bellinger } 2156c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp->lu_gp_lock); 2157c66ac9dbSNicholas Bellinger 2158c66ac9dbSNicholas Bellinger return len; 2159c66ac9dbSNicholas Bellinger } 2160c66ac9dbSNicholas Bellinger 2161c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR_RO(members); 2162c66ac9dbSNicholas Bellinger 2163c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); 2164c66ac9dbSNicholas Bellinger 2165c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 2166c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_lu_gp_id.attr, 2167c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_members.attr, 2168c66ac9dbSNicholas Bellinger NULL, 2169c66ac9dbSNicholas Bellinger }; 2170c66ac9dbSNicholas Bellinger 21711f6fe7cbSNicholas Bellinger static void target_core_alua_lu_gp_release(struct config_item *item) 21721f6fe7cbSNicholas Bellinger { 21731f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 21741f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 21751f6fe7cbSNicholas Bellinger 21761f6fe7cbSNicholas Bellinger core_alua_free_lu_gp(lu_gp); 21771f6fe7cbSNicholas Bellinger } 21781f6fe7cbSNicholas Bellinger 2179c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_lu_gp_ops = { 21801f6fe7cbSNicholas Bellinger .release = target_core_alua_lu_gp_release, 2181c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_lu_gp_attr_show, 2182c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_lu_gp_attr_store, 2183c66ac9dbSNicholas Bellinger }; 2184c66ac9dbSNicholas Bellinger 2185c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gp_cit = { 2186c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_lu_gp_ops, 2187c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_lu_gp_attrs, 2188c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2189c66ac9dbSNicholas Bellinger }; 2190c66ac9dbSNicholas Bellinger 2191c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 2192c66ac9dbSNicholas Bellinger 2193c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 2194c66ac9dbSNicholas Bellinger 2195c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_lu_gp( 2196c66ac9dbSNicholas Bellinger struct config_group *group, 2197c66ac9dbSNicholas Bellinger const char *name) 2198c66ac9dbSNicholas Bellinger { 2199c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2200c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = NULL; 2201c66ac9dbSNicholas Bellinger struct config_item *alua_lu_gp_ci = NULL; 2202c66ac9dbSNicholas Bellinger 2203c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp(name, 0); 2204c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 2205c66ac9dbSNicholas Bellinger return NULL; 2206c66ac9dbSNicholas Bellinger 2207c66ac9dbSNicholas Bellinger alua_lu_gp_cg = &lu_gp->lu_gp_group; 2208c66ac9dbSNicholas Bellinger alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 2209c66ac9dbSNicholas Bellinger 2210c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_lu_gp_cg, name, 2211c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 2212c66ac9dbSNicholas Bellinger 22136708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 2214c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s\n", 2215c66ac9dbSNicholas Bellinger config_item_name(alua_lu_gp_ci)); 2216c66ac9dbSNicholas Bellinger 2217c66ac9dbSNicholas Bellinger return alua_lu_gp_cg; 2218c66ac9dbSNicholas Bellinger 2219c66ac9dbSNicholas Bellinger } 2220c66ac9dbSNicholas Bellinger 2221c66ac9dbSNicholas Bellinger static void target_core_alua_drop_lu_gp( 2222c66ac9dbSNicholas Bellinger struct config_group *group, 2223c66ac9dbSNicholas Bellinger struct config_item *item) 2224c66ac9dbSNicholas Bellinger { 2225c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 2226c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 2227c66ac9dbSNicholas Bellinger 22286708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 2229c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s, ID: %hu\n", 2230c66ac9dbSNicholas Bellinger config_item_name(item), lu_gp->lu_gp_id); 22311f6fe7cbSNicholas Bellinger /* 22321f6fe7cbSNicholas Bellinger * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 22331f6fe7cbSNicholas Bellinger * -> target_core_alua_lu_gp_release() 22341f6fe7cbSNicholas Bellinger */ 2235c66ac9dbSNicholas Bellinger config_item_put(item); 2236c66ac9dbSNicholas Bellinger } 2237c66ac9dbSNicholas Bellinger 2238c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 2239c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_lu_gp, 2240c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_lu_gp, 2241c66ac9dbSNicholas Bellinger }; 2242c66ac9dbSNicholas Bellinger 2243c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gps_cit = { 2244c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2245c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_lu_gps_group_ops, 2246c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2247c66ac9dbSNicholas Bellinger }; 2248c66ac9dbSNicholas Bellinger 2249c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 2250c66ac9dbSNicholas Bellinger 2251c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2252c66ac9dbSNicholas Bellinger 2253c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); 2254c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ 2255c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 2256c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 2257c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2258c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name, \ 2259c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_store_attr_##_name); 2260c66ac9dbSNicholas Bellinger 2261c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ 2262c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 2263c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 2264c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2265c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name); 2266c66ac9dbSNicholas Bellinger 2267c66ac9dbSNicholas Bellinger /* 2268c66ac9dbSNicholas Bellinger * alua_access_state 2269c66ac9dbSNicholas Bellinger */ 2270c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( 2271c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2272c66ac9dbSNicholas Bellinger char *page) 2273c66ac9dbSNicholas Bellinger { 2274c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", 2275c66ac9dbSNicholas Bellinger atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); 2276c66ac9dbSNicholas Bellinger } 2277c66ac9dbSNicholas Bellinger 2278c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( 2279c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2280c66ac9dbSNicholas Bellinger const char *page, 2281c66ac9dbSNicholas Bellinger size_t count) 2282c66ac9dbSNicholas Bellinger { 2283c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev; 2284c66ac9dbSNicholas Bellinger unsigned long tmp; 2285c66ac9dbSNicholas Bellinger int new_state, ret; 2286c66ac9dbSNicholas Bellinger 22876708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 22886708bb27SAndy Grover pr_err("Unable to do implict ALUA on non valid" 2289c66ac9dbSNicholas Bellinger " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); 2290c66ac9dbSNicholas Bellinger return -EINVAL; 2291c66ac9dbSNicholas Bellinger } 2292c66ac9dbSNicholas Bellinger 2293c66ac9dbSNicholas Bellinger ret = strict_strtoul(page, 0, &tmp); 2294c66ac9dbSNicholas Bellinger if (ret < 0) { 22956708bb27SAndy Grover pr_err("Unable to extract new ALUA access state from" 2296c66ac9dbSNicholas Bellinger " %s\n", page); 2297c66ac9dbSNicholas Bellinger return -EINVAL; 2298c66ac9dbSNicholas Bellinger } 2299c66ac9dbSNicholas Bellinger new_state = (int)tmp; 2300c66ac9dbSNicholas Bellinger 2301c66ac9dbSNicholas Bellinger if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { 23026708bb27SAndy Grover pr_err("Unable to process implict configfs ALUA" 2303c66ac9dbSNicholas Bellinger " transition while TPGS_IMPLICT_ALUA is diabled\n"); 2304c66ac9dbSNicholas Bellinger return -EINVAL; 2305c66ac9dbSNicholas Bellinger } 2306c66ac9dbSNicholas Bellinger 2307c66ac9dbSNicholas Bellinger ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr, 2308c66ac9dbSNicholas Bellinger NULL, NULL, new_state, 0); 2309c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; 2310c66ac9dbSNicholas Bellinger } 2311c66ac9dbSNicholas Bellinger 2312c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); 2313c66ac9dbSNicholas Bellinger 2314c66ac9dbSNicholas Bellinger /* 2315c66ac9dbSNicholas Bellinger * alua_access_status 2316c66ac9dbSNicholas Bellinger */ 2317c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( 2318c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2319c66ac9dbSNicholas Bellinger char *page) 2320c66ac9dbSNicholas Bellinger { 2321c66ac9dbSNicholas Bellinger return sprintf(page, "%s\n", 2322c66ac9dbSNicholas Bellinger core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2323c66ac9dbSNicholas Bellinger } 2324c66ac9dbSNicholas Bellinger 2325c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( 2326c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2327c66ac9dbSNicholas Bellinger const char *page, 2328c66ac9dbSNicholas Bellinger size_t count) 2329c66ac9dbSNicholas Bellinger { 2330c66ac9dbSNicholas Bellinger unsigned long tmp; 2331c66ac9dbSNicholas Bellinger int new_status, ret; 2332c66ac9dbSNicholas Bellinger 23336708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 23346708bb27SAndy Grover pr_err("Unable to do set ALUA access status on non" 2335c66ac9dbSNicholas Bellinger " valid tg_pt_gp ID: %hu\n", 2336c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_valid_id); 2337c66ac9dbSNicholas Bellinger return -EINVAL; 2338c66ac9dbSNicholas Bellinger } 2339c66ac9dbSNicholas Bellinger 2340c66ac9dbSNicholas Bellinger ret = strict_strtoul(page, 0, &tmp); 2341c66ac9dbSNicholas Bellinger if (ret < 0) { 23426708bb27SAndy Grover pr_err("Unable to extract new ALUA access status" 2343c66ac9dbSNicholas Bellinger " from %s\n", page); 2344c66ac9dbSNicholas Bellinger return -EINVAL; 2345c66ac9dbSNicholas Bellinger } 2346c66ac9dbSNicholas Bellinger new_status = (int)tmp; 2347c66ac9dbSNicholas Bellinger 2348c66ac9dbSNicholas Bellinger if ((new_status != ALUA_STATUS_NONE) && 2349c66ac9dbSNicholas Bellinger (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && 2350c66ac9dbSNicholas Bellinger (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { 23516708bb27SAndy Grover pr_err("Illegal ALUA access status: 0x%02x\n", 2352c66ac9dbSNicholas Bellinger new_status); 2353c66ac9dbSNicholas Bellinger return -EINVAL; 2354c66ac9dbSNicholas Bellinger } 2355c66ac9dbSNicholas Bellinger 2356c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2357c66ac9dbSNicholas Bellinger return count; 2358c66ac9dbSNicholas Bellinger } 2359c66ac9dbSNicholas Bellinger 2360c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); 2361c66ac9dbSNicholas Bellinger 2362c66ac9dbSNicholas Bellinger /* 2363c66ac9dbSNicholas Bellinger * alua_access_type 2364c66ac9dbSNicholas Bellinger */ 2365c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( 2366c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2367c66ac9dbSNicholas Bellinger char *page) 2368c66ac9dbSNicholas Bellinger { 2369c66ac9dbSNicholas Bellinger return core_alua_show_access_type(tg_pt_gp, page); 2370c66ac9dbSNicholas Bellinger } 2371c66ac9dbSNicholas Bellinger 2372c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( 2373c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2374c66ac9dbSNicholas Bellinger const char *page, 2375c66ac9dbSNicholas Bellinger size_t count) 2376c66ac9dbSNicholas Bellinger { 2377c66ac9dbSNicholas Bellinger return core_alua_store_access_type(tg_pt_gp, page, count); 2378c66ac9dbSNicholas Bellinger } 2379c66ac9dbSNicholas Bellinger 2380c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); 2381c66ac9dbSNicholas Bellinger 2382c66ac9dbSNicholas Bellinger /* 2383c66ac9dbSNicholas Bellinger * alua_write_metadata 2384c66ac9dbSNicholas Bellinger */ 2385c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( 2386c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2387c66ac9dbSNicholas Bellinger char *page) 2388c66ac9dbSNicholas Bellinger { 2389c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); 2390c66ac9dbSNicholas Bellinger } 2391c66ac9dbSNicholas Bellinger 2392c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( 2393c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2394c66ac9dbSNicholas Bellinger const char *page, 2395c66ac9dbSNicholas Bellinger size_t count) 2396c66ac9dbSNicholas Bellinger { 2397c66ac9dbSNicholas Bellinger unsigned long tmp; 2398c66ac9dbSNicholas Bellinger int ret; 2399c66ac9dbSNicholas Bellinger 2400c66ac9dbSNicholas Bellinger ret = strict_strtoul(page, 0, &tmp); 2401c66ac9dbSNicholas Bellinger if (ret < 0) { 24026708bb27SAndy Grover pr_err("Unable to extract alua_write_metadata\n"); 2403c66ac9dbSNicholas Bellinger return -EINVAL; 2404c66ac9dbSNicholas Bellinger } 2405c66ac9dbSNicholas Bellinger 2406c66ac9dbSNicholas Bellinger if ((tmp != 0) && (tmp != 1)) { 24076708bb27SAndy Grover pr_err("Illegal value for alua_write_metadata:" 2408c66ac9dbSNicholas Bellinger " %lu\n", tmp); 2409c66ac9dbSNicholas Bellinger return -EINVAL; 2410c66ac9dbSNicholas Bellinger } 2411c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2412c66ac9dbSNicholas Bellinger 2413c66ac9dbSNicholas Bellinger return count; 2414c66ac9dbSNicholas Bellinger } 2415c66ac9dbSNicholas Bellinger 2416c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); 2417c66ac9dbSNicholas Bellinger 2418c66ac9dbSNicholas Bellinger 2419c66ac9dbSNicholas Bellinger 2420c66ac9dbSNicholas Bellinger /* 2421c66ac9dbSNicholas Bellinger * nonop_delay_msecs 2422c66ac9dbSNicholas Bellinger */ 2423c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( 2424c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2425c66ac9dbSNicholas Bellinger char *page) 2426c66ac9dbSNicholas Bellinger { 2427c66ac9dbSNicholas Bellinger return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); 2428c66ac9dbSNicholas Bellinger 2429c66ac9dbSNicholas Bellinger } 2430c66ac9dbSNicholas Bellinger 2431c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( 2432c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2433c66ac9dbSNicholas Bellinger const char *page, 2434c66ac9dbSNicholas Bellinger size_t count) 2435c66ac9dbSNicholas Bellinger { 2436c66ac9dbSNicholas Bellinger return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); 2437c66ac9dbSNicholas Bellinger } 2438c66ac9dbSNicholas Bellinger 2439c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); 2440c66ac9dbSNicholas Bellinger 2441c66ac9dbSNicholas Bellinger /* 2442c66ac9dbSNicholas Bellinger * trans_delay_msecs 2443c66ac9dbSNicholas Bellinger */ 2444c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( 2445c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2446c66ac9dbSNicholas Bellinger char *page) 2447c66ac9dbSNicholas Bellinger { 2448c66ac9dbSNicholas Bellinger return core_alua_show_trans_delay_msecs(tg_pt_gp, page); 2449c66ac9dbSNicholas Bellinger } 2450c66ac9dbSNicholas Bellinger 2451c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( 2452c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2453c66ac9dbSNicholas Bellinger const char *page, 2454c66ac9dbSNicholas Bellinger size_t count) 2455c66ac9dbSNicholas Bellinger { 2456c66ac9dbSNicholas Bellinger return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); 2457c66ac9dbSNicholas Bellinger } 2458c66ac9dbSNicholas Bellinger 2459c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); 2460c66ac9dbSNicholas Bellinger 2461c66ac9dbSNicholas Bellinger /* 2462c66ac9dbSNicholas Bellinger * preferred 2463c66ac9dbSNicholas Bellinger */ 2464c66ac9dbSNicholas Bellinger 2465c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( 2466c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2467c66ac9dbSNicholas Bellinger char *page) 2468c66ac9dbSNicholas Bellinger { 2469c66ac9dbSNicholas Bellinger return core_alua_show_preferred_bit(tg_pt_gp, page); 2470c66ac9dbSNicholas Bellinger } 2471c66ac9dbSNicholas Bellinger 2472c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( 2473c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2474c66ac9dbSNicholas Bellinger const char *page, 2475c66ac9dbSNicholas Bellinger size_t count) 2476c66ac9dbSNicholas Bellinger { 2477c66ac9dbSNicholas Bellinger return core_alua_store_preferred_bit(tg_pt_gp, page, count); 2478c66ac9dbSNicholas Bellinger } 2479c66ac9dbSNicholas Bellinger 2480c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); 2481c66ac9dbSNicholas Bellinger 2482c66ac9dbSNicholas Bellinger /* 2483c66ac9dbSNicholas Bellinger * tg_pt_gp_id 2484c66ac9dbSNicholas Bellinger */ 2485c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( 2486c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2487c66ac9dbSNicholas Bellinger char *page) 2488c66ac9dbSNicholas Bellinger { 24896708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) 2490c66ac9dbSNicholas Bellinger return 0; 2491c66ac9dbSNicholas Bellinger 2492c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 2493c66ac9dbSNicholas Bellinger } 2494c66ac9dbSNicholas Bellinger 2495c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( 2496c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2497c66ac9dbSNicholas Bellinger const char *page, 2498c66ac9dbSNicholas Bellinger size_t count) 2499c66ac9dbSNicholas Bellinger { 2500c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2501c66ac9dbSNicholas Bellinger unsigned long tg_pt_gp_id; 2502c66ac9dbSNicholas Bellinger int ret; 2503c66ac9dbSNicholas Bellinger 2504c66ac9dbSNicholas Bellinger ret = strict_strtoul(page, 0, &tg_pt_gp_id); 2505c66ac9dbSNicholas Bellinger if (ret < 0) { 25066708bb27SAndy Grover pr_err("strict_strtoul() returned %d for" 2507c66ac9dbSNicholas Bellinger " tg_pt_gp_id\n", ret); 2508c66ac9dbSNicholas Bellinger return -EINVAL; 2509c66ac9dbSNicholas Bellinger } 2510c66ac9dbSNicholas Bellinger if (tg_pt_gp_id > 0x0000ffff) { 25116708bb27SAndy Grover pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" 2512c66ac9dbSNicholas Bellinger " 0x0000ffff\n", tg_pt_gp_id); 2513c66ac9dbSNicholas Bellinger return -EINVAL; 2514c66ac9dbSNicholas Bellinger } 2515c66ac9dbSNicholas Bellinger 2516c66ac9dbSNicholas Bellinger ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 2517c66ac9dbSNicholas Bellinger if (ret < 0) 2518c66ac9dbSNicholas Bellinger return -EINVAL; 2519c66ac9dbSNicholas Bellinger 25206708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 2521c66ac9dbSNicholas Bellinger "core/alua/tg_pt_gps/%s to ID: %hu\n", 2522c66ac9dbSNicholas Bellinger config_item_name(&alua_tg_pt_gp_cg->cg_item), 2523c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_id); 2524c66ac9dbSNicholas Bellinger 2525c66ac9dbSNicholas Bellinger return count; 2526c66ac9dbSNicholas Bellinger } 2527c66ac9dbSNicholas Bellinger 2528c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); 2529c66ac9dbSNicholas Bellinger 2530c66ac9dbSNicholas Bellinger /* 2531c66ac9dbSNicholas Bellinger * members 2532c66ac9dbSNicholas Bellinger */ 2533c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_members( 2534c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2535c66ac9dbSNicholas Bellinger char *page) 2536c66ac9dbSNicholas Bellinger { 2537c66ac9dbSNicholas Bellinger struct se_port *port; 2538c66ac9dbSNicholas Bellinger struct se_portal_group *tpg; 2539c66ac9dbSNicholas Bellinger struct se_lun *lun; 2540c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 2541c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2542c66ac9dbSNicholas Bellinger unsigned char buf[TG_PT_GROUP_NAME_BUF]; 2543c66ac9dbSNicholas Bellinger 2544c66ac9dbSNicholas Bellinger memset(buf, 0, TG_PT_GROUP_NAME_BUF); 2545c66ac9dbSNicholas Bellinger 2546c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp->tg_pt_gp_lock); 2547c66ac9dbSNicholas Bellinger list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, 2548c66ac9dbSNicholas Bellinger tg_pt_gp_mem_list) { 2549c66ac9dbSNicholas Bellinger port = tg_pt_gp_mem->tg_pt; 2550c66ac9dbSNicholas Bellinger tpg = port->sep_tpg; 2551c66ac9dbSNicholas Bellinger lun = port->sep_lun; 2552c66ac9dbSNicholas Bellinger 2553c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 2554e3d6f909SAndy Grover "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), 2555e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), 2556e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 2557c66ac9dbSNicholas Bellinger config_item_name(&lun->lun_group.cg_item)); 2558c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2559c66ac9dbSNicholas Bellinger 2560c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 25616708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2562c66ac9dbSNicholas Bellinger "_members buffer\n"); 2563c66ac9dbSNicholas Bellinger break; 2564c66ac9dbSNicholas Bellinger } 2565c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2566c66ac9dbSNicholas Bellinger len += cur_len; 2567c66ac9dbSNicholas Bellinger } 2568c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 2569c66ac9dbSNicholas Bellinger 2570c66ac9dbSNicholas Bellinger return len; 2571c66ac9dbSNicholas Bellinger } 2572c66ac9dbSNicholas Bellinger 2573c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR_RO(members); 2574c66ac9dbSNicholas Bellinger 2575c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, 2576c66ac9dbSNicholas Bellinger tg_pt_gp_group); 2577c66ac9dbSNicholas Bellinger 2578c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 2579c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_state.attr, 2580c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_status.attr, 2581c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_type.attr, 2582c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_write_metadata.attr, 2583c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, 2584c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, 2585c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_preferred.attr, 2586c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, 2587c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_members.attr, 2588c66ac9dbSNicholas Bellinger NULL, 2589c66ac9dbSNicholas Bellinger }; 2590c66ac9dbSNicholas Bellinger 25911f6fe7cbSNicholas Bellinger static void target_core_alua_tg_pt_gp_release(struct config_item *item) 25921f6fe7cbSNicholas Bellinger { 25931f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 25941f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 25951f6fe7cbSNicholas Bellinger 25961f6fe7cbSNicholas Bellinger core_alua_free_tg_pt_gp(tg_pt_gp); 25971f6fe7cbSNicholas Bellinger } 25981f6fe7cbSNicholas Bellinger 2599c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 26001f6fe7cbSNicholas Bellinger .release = target_core_alua_tg_pt_gp_release, 2601c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_tg_pt_gp_attr_show, 2602c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_tg_pt_gp_attr_store, 2603c66ac9dbSNicholas Bellinger }; 2604c66ac9dbSNicholas Bellinger 2605c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_tg_pt_gp_cit = { 2606c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 2607c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_tg_pt_gp_attrs, 2608c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2609c66ac9dbSNicholas Bellinger }; 2610c66ac9dbSNicholas Bellinger 2611c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2612c66ac9dbSNicholas Bellinger 2613c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2614c66ac9dbSNicholas Bellinger 2615c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_tg_pt_gp( 2616c66ac9dbSNicholas Bellinger struct config_group *group, 2617c66ac9dbSNicholas Bellinger const char *name) 2618c66ac9dbSNicholas Bellinger { 2619c66ac9dbSNicholas Bellinger struct t10_alua *alua = container_of(group, struct t10_alua, 2620c66ac9dbSNicholas Bellinger alua_tg_pt_gps_group); 2621c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2622c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev = alua->t10_sub_dev; 2623c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = NULL; 2624c66ac9dbSNicholas Bellinger struct config_item *alua_tg_pt_gp_ci = NULL; 2625c66ac9dbSNicholas Bellinger 2626c66ac9dbSNicholas Bellinger tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0); 26276708bb27SAndy Grover if (!tg_pt_gp) 2628c66ac9dbSNicholas Bellinger return NULL; 2629c66ac9dbSNicholas Bellinger 2630c66ac9dbSNicholas Bellinger alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2631c66ac9dbSNicholas Bellinger alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 2632c66ac9dbSNicholas Bellinger 2633c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_tg_pt_gp_cg, name, 2634c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_cit); 2635c66ac9dbSNicholas Bellinger 26366708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 2637c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s\n", 2638c66ac9dbSNicholas Bellinger config_item_name(alua_tg_pt_gp_ci)); 2639c66ac9dbSNicholas Bellinger 2640c66ac9dbSNicholas Bellinger return alua_tg_pt_gp_cg; 2641c66ac9dbSNicholas Bellinger } 2642c66ac9dbSNicholas Bellinger 2643c66ac9dbSNicholas Bellinger static void target_core_alua_drop_tg_pt_gp( 2644c66ac9dbSNicholas Bellinger struct config_group *group, 2645c66ac9dbSNicholas Bellinger struct config_item *item) 2646c66ac9dbSNicholas Bellinger { 2647c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2648c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2649c66ac9dbSNicholas Bellinger 26506708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 2651c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s, ID: %hu\n", 2652c66ac9dbSNicholas Bellinger config_item_name(item), tg_pt_gp->tg_pt_gp_id); 26531f6fe7cbSNicholas Bellinger /* 26541f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 26551f6fe7cbSNicholas Bellinger * -> target_core_alua_tg_pt_gp_release(). 26561f6fe7cbSNicholas Bellinger */ 2657c66ac9dbSNicholas Bellinger config_item_put(item); 2658c66ac9dbSNicholas Bellinger } 2659c66ac9dbSNicholas Bellinger 2660c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 2661c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_tg_pt_gp, 2662c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_tg_pt_gp, 2663c66ac9dbSNicholas Bellinger }; 2664c66ac9dbSNicholas Bellinger 2665c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_tg_pt_gps_cit = { 2666c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, 2667c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2668c66ac9dbSNicholas Bellinger }; 2669c66ac9dbSNicholas Bellinger 2670c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2671c66ac9dbSNicholas Bellinger 2672c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_cit */ 2673c66ac9dbSNicholas Bellinger 2674c66ac9dbSNicholas Bellinger /* 2675c66ac9dbSNicholas Bellinger * target_core_alua_cit is a ConfigFS group that lives under 2676c66ac9dbSNicholas Bellinger * /sys/kernel/config/target/core/alua. There are default groups 2677c66ac9dbSNicholas Bellinger * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 2678c66ac9dbSNicholas Bellinger * target_core_alua_cit in target_core_init_configfs() below. 2679c66ac9dbSNicholas Bellinger */ 2680c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_cit = { 2681c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2682c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 2683c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2684c66ac9dbSNicholas Bellinger }; 2685c66ac9dbSNicholas Bellinger 2686c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_cit */ 2687c66ac9dbSNicholas Bellinger 268812d23384SNicholas Bellinger /* Start functions for struct config_item_type target_core_stat_cit */ 268912d23384SNicholas Bellinger 269012d23384SNicholas Bellinger static struct config_group *target_core_stat_mkdir( 269112d23384SNicholas Bellinger struct config_group *group, 269212d23384SNicholas Bellinger const char *name) 269312d23384SNicholas Bellinger { 269412d23384SNicholas Bellinger return ERR_PTR(-ENOSYS); 269512d23384SNicholas Bellinger } 269612d23384SNicholas Bellinger 269712d23384SNicholas Bellinger static void target_core_stat_rmdir( 269812d23384SNicholas Bellinger struct config_group *group, 269912d23384SNicholas Bellinger struct config_item *item) 270012d23384SNicholas Bellinger { 270112d23384SNicholas Bellinger return; 270212d23384SNicholas Bellinger } 270312d23384SNicholas Bellinger 270412d23384SNicholas Bellinger static struct configfs_group_operations target_core_stat_group_ops = { 270512d23384SNicholas Bellinger .make_group = &target_core_stat_mkdir, 270612d23384SNicholas Bellinger .drop_item = &target_core_stat_rmdir, 270712d23384SNicholas Bellinger }; 270812d23384SNicholas Bellinger 270912d23384SNicholas Bellinger static struct config_item_type target_core_stat_cit = { 271012d23384SNicholas Bellinger .ct_group_ops = &target_core_stat_group_ops, 271112d23384SNicholas Bellinger .ct_owner = THIS_MODULE, 271212d23384SNicholas Bellinger }; 271312d23384SNicholas Bellinger 271412d23384SNicholas Bellinger /* End functions for struct config_item_type target_core_stat_cit */ 271512d23384SNicholas Bellinger 2716c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_hba_cit */ 2717c66ac9dbSNicholas Bellinger 2718c66ac9dbSNicholas Bellinger static struct config_group *target_core_make_subdev( 2719c66ac9dbSNicholas Bellinger struct config_group *group, 2720c66ac9dbSNicholas Bellinger const char *name) 2721c66ac9dbSNicholas Bellinger { 2722c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2723c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev; 2724c66ac9dbSNicholas Bellinger struct se_subsystem_api *t; 2725c66ac9dbSNicholas Bellinger struct config_item *hba_ci = &group->cg_item; 2726c66ac9dbSNicholas Bellinger struct se_hba *hba = item_to_hba(hba_ci); 2727c66ac9dbSNicholas Bellinger struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; 272812d23384SNicholas Bellinger struct config_group *dev_stat_grp = NULL; 272912d23384SNicholas Bellinger int errno = -ENOMEM, ret; 2730c66ac9dbSNicholas Bellinger 273112d23384SNicholas Bellinger ret = mutex_lock_interruptible(&hba->hba_access_mutex); 273212d23384SNicholas Bellinger if (ret) 273312d23384SNicholas Bellinger return ERR_PTR(ret); 2734c66ac9dbSNicholas Bellinger /* 2735c66ac9dbSNicholas Bellinger * Locate the struct se_subsystem_api from parent's struct se_hba. 2736c66ac9dbSNicholas Bellinger */ 2737c66ac9dbSNicholas Bellinger t = hba->transport; 2738c66ac9dbSNicholas Bellinger 2739c66ac9dbSNicholas Bellinger se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); 2740c66ac9dbSNicholas Bellinger if (!se_dev) { 27416708bb27SAndy Grover pr_err("Unable to allocate memory for" 2742c66ac9dbSNicholas Bellinger " struct se_subsystem_dev\n"); 2743c66ac9dbSNicholas Bellinger goto unlock; 2744c66ac9dbSNicholas Bellinger } 2745c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); 2746c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); 2747e3d6f909SAndy Grover INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); 2748e3d6f909SAndy Grover INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); 2749e3d6f909SAndy Grover spin_lock_init(&se_dev->t10_pr.registration_lock); 2750e3d6f909SAndy Grover spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); 2751c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); 2752c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); 2753c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->se_dev_lock); 2754e3d6f909SAndy Grover se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; 2755c66ac9dbSNicholas Bellinger se_dev->t10_wwn.t10_sub_dev = se_dev; 2756c66ac9dbSNicholas Bellinger se_dev->t10_alua.t10_sub_dev = se_dev; 2757c66ac9dbSNicholas Bellinger se_dev->se_dev_attrib.da_sub_dev = se_dev; 2758c66ac9dbSNicholas Bellinger 2759c66ac9dbSNicholas Bellinger se_dev->se_dev_hba = hba; 2760c66ac9dbSNicholas Bellinger dev_cg = &se_dev->se_dev_group; 2761c66ac9dbSNicholas Bellinger 276212d23384SNicholas Bellinger dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7, 2763c66ac9dbSNicholas Bellinger GFP_KERNEL); 27646708bb27SAndy Grover if (!dev_cg->default_groups) 2765c66ac9dbSNicholas Bellinger goto out; 2766c66ac9dbSNicholas Bellinger /* 2767c66ac9dbSNicholas Bellinger * Set se_dev_su_ptr from struct se_subsystem_api returned void ptr 2768c66ac9dbSNicholas Bellinger * for ->allocate_virtdevice() 2769c66ac9dbSNicholas Bellinger * 2770c66ac9dbSNicholas Bellinger * se_dev->se_dev_ptr will be set after ->create_virtdev() 2771c66ac9dbSNicholas Bellinger * has been called successfully in the next level up in the 2772c66ac9dbSNicholas Bellinger * configfs tree for device object's struct config_group. 2773c66ac9dbSNicholas Bellinger */ 2774c66ac9dbSNicholas Bellinger se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name); 27756708bb27SAndy Grover if (!se_dev->se_dev_su_ptr) { 27766708bb27SAndy Grover pr_err("Unable to locate subsystem dependent pointer" 2777c66ac9dbSNicholas Bellinger " from allocate_virtdevice()\n"); 2778c66ac9dbSNicholas Bellinger goto out; 2779c66ac9dbSNicholas Bellinger } 2780c66ac9dbSNicholas Bellinger 2781c66ac9dbSNicholas Bellinger config_group_init_type_name(&se_dev->se_dev_group, name, 2782c66ac9dbSNicholas Bellinger &target_core_dev_cit); 2783c66ac9dbSNicholas Bellinger config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib", 2784c66ac9dbSNicholas Bellinger &target_core_dev_attrib_cit); 2785c66ac9dbSNicholas Bellinger config_group_init_type_name(&se_dev->se_dev_pr_group, "pr", 2786c66ac9dbSNicholas Bellinger &target_core_dev_pr_cit); 2787c66ac9dbSNicholas Bellinger config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn", 2788c66ac9dbSNicholas Bellinger &target_core_dev_wwn_cit); 2789c66ac9dbSNicholas Bellinger config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group, 2790c66ac9dbSNicholas Bellinger "alua", &target_core_alua_tg_pt_gps_cit); 279112d23384SNicholas Bellinger config_group_init_type_name(&se_dev->dev_stat_grps.stat_group, 279212d23384SNicholas Bellinger "statistics", &target_core_stat_cit); 279312d23384SNicholas Bellinger 2794c66ac9dbSNicholas Bellinger dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group; 2795c66ac9dbSNicholas Bellinger dev_cg->default_groups[1] = &se_dev->se_dev_pr_group; 2796c66ac9dbSNicholas Bellinger dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group; 2797c66ac9dbSNicholas Bellinger dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group; 279812d23384SNicholas Bellinger dev_cg->default_groups[4] = &se_dev->dev_stat_grps.stat_group; 279912d23384SNicholas Bellinger dev_cg->default_groups[5] = NULL; 2800c66ac9dbSNicholas Bellinger /* 280112d23384SNicholas Bellinger * Add core/$HBA/$DEV/alua/default_tg_pt_gp 2802c66ac9dbSNicholas Bellinger */ 2803c66ac9dbSNicholas Bellinger tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1); 28046708bb27SAndy Grover if (!tg_pt_gp) 2805c66ac9dbSNicholas Bellinger goto out; 2806c66ac9dbSNicholas Bellinger 2807e3d6f909SAndy Grover tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; 2808c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 2809c66ac9dbSNicholas Bellinger GFP_KERNEL); 28106708bb27SAndy Grover if (!tg_pt_gp_cg->default_groups) { 28116708bb27SAndy Grover pr_err("Unable to allocate tg_pt_gp_cg->" 2812c66ac9dbSNicholas Bellinger "default_groups\n"); 2813c66ac9dbSNicholas Bellinger goto out; 2814c66ac9dbSNicholas Bellinger } 2815c66ac9dbSNicholas Bellinger 2816c66ac9dbSNicholas Bellinger config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 2817c66ac9dbSNicholas Bellinger "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 2818c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; 2819c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[1] = NULL; 2820e3d6f909SAndy Grover se_dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 282112d23384SNicholas Bellinger /* 282212d23384SNicholas Bellinger * Add core/$HBA/$DEV/statistics/ default groups 282312d23384SNicholas Bellinger */ 2824e3d6f909SAndy Grover dev_stat_grp = &se_dev->dev_stat_grps.stat_group; 282512d23384SNicholas Bellinger dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4, 282612d23384SNicholas Bellinger GFP_KERNEL); 282712d23384SNicholas Bellinger if (!dev_stat_grp->default_groups) { 28286708bb27SAndy Grover pr_err("Unable to allocate dev_stat_grp->default_groups\n"); 282912d23384SNicholas Bellinger goto out; 283012d23384SNicholas Bellinger } 283112d23384SNicholas Bellinger target_stat_setup_dev_default_groups(se_dev); 2832c66ac9dbSNicholas Bellinger 28336708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated struct se_subsystem_dev:" 2834c66ac9dbSNicholas Bellinger " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr); 2835c66ac9dbSNicholas Bellinger 2836c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 2837c66ac9dbSNicholas Bellinger return &se_dev->se_dev_group; 2838c66ac9dbSNicholas Bellinger out: 2839e3d6f909SAndy Grover if (se_dev->t10_alua.default_tg_pt_gp) { 2840e3d6f909SAndy Grover core_alua_free_tg_pt_gp(se_dev->t10_alua.default_tg_pt_gp); 2841e3d6f909SAndy Grover se_dev->t10_alua.default_tg_pt_gp = NULL; 2842c66ac9dbSNicholas Bellinger } 284312d23384SNicholas Bellinger if (dev_stat_grp) 284412d23384SNicholas Bellinger kfree(dev_stat_grp->default_groups); 2845c66ac9dbSNicholas Bellinger if (tg_pt_gp_cg) 2846c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 2847c66ac9dbSNicholas Bellinger if (dev_cg) 2848c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 2849c66ac9dbSNicholas Bellinger if (se_dev->se_dev_su_ptr) 2850c66ac9dbSNicholas Bellinger t->free_device(se_dev->se_dev_su_ptr); 2851c66ac9dbSNicholas Bellinger kfree(se_dev); 2852c66ac9dbSNicholas Bellinger unlock: 2853c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 285412d23384SNicholas Bellinger return ERR_PTR(errno); 2855c66ac9dbSNicholas Bellinger } 2856c66ac9dbSNicholas Bellinger 2857c66ac9dbSNicholas Bellinger static void target_core_drop_subdev( 2858c66ac9dbSNicholas Bellinger struct config_group *group, 2859c66ac9dbSNicholas Bellinger struct config_item *item) 2860c66ac9dbSNicholas Bellinger { 2861c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = container_of(to_config_group(item), 2862c66ac9dbSNicholas Bellinger struct se_subsystem_dev, se_dev_group); 2863c66ac9dbSNicholas Bellinger struct se_hba *hba; 2864c66ac9dbSNicholas Bellinger struct se_subsystem_api *t; 2865c66ac9dbSNicholas Bellinger struct config_item *df_item; 286612d23384SNicholas Bellinger struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp; 28671f6fe7cbSNicholas Bellinger int i; 2868c66ac9dbSNicholas Bellinger 2869c66ac9dbSNicholas Bellinger hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); 2870c66ac9dbSNicholas Bellinger 28711f6fe7cbSNicholas Bellinger mutex_lock(&hba->hba_access_mutex); 2872c66ac9dbSNicholas Bellinger t = hba->transport; 2873c66ac9dbSNicholas Bellinger 2874e3d6f909SAndy Grover dev_stat_grp = &se_dev->dev_stat_grps.stat_group; 287512d23384SNicholas Bellinger for (i = 0; dev_stat_grp->default_groups[i]; i++) { 287612d23384SNicholas Bellinger df_item = &dev_stat_grp->default_groups[i]->cg_item; 287712d23384SNicholas Bellinger dev_stat_grp->default_groups[i] = NULL; 287812d23384SNicholas Bellinger config_item_put(df_item); 287912d23384SNicholas Bellinger } 288012d23384SNicholas Bellinger kfree(dev_stat_grp->default_groups); 288112d23384SNicholas Bellinger 2882e3d6f909SAndy Grover tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; 2883c66ac9dbSNicholas Bellinger for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { 2884c66ac9dbSNicholas Bellinger df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; 2885c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[i] = NULL; 2886c66ac9dbSNicholas Bellinger config_item_put(df_item); 2887c66ac9dbSNicholas Bellinger } 2888c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 28891f6fe7cbSNicholas Bellinger /* 28901f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 28911f6fe7cbSNicholas Bellinger * directly from target_core_alua_tg_pt_gp_release(). 28921f6fe7cbSNicholas Bellinger */ 2893e3d6f909SAndy Grover se_dev->t10_alua.default_tg_pt_gp = NULL; 2894c66ac9dbSNicholas Bellinger 2895c66ac9dbSNicholas Bellinger dev_cg = &se_dev->se_dev_group; 2896c66ac9dbSNicholas Bellinger for (i = 0; dev_cg->default_groups[i]; i++) { 2897c66ac9dbSNicholas Bellinger df_item = &dev_cg->default_groups[i]->cg_item; 2898c66ac9dbSNicholas Bellinger dev_cg->default_groups[i] = NULL; 2899c66ac9dbSNicholas Bellinger config_item_put(df_item); 2900c66ac9dbSNicholas Bellinger } 29011f6fe7cbSNicholas Bellinger /* 29021f6fe7cbSNicholas Bellinger * The releasing of se_dev and associated se_dev->se_dev_ptr is done 29031f6fe7cbSNicholas Bellinger * from target_core_dev_item_ops->release() ->target_core_dev_release(). 29041f6fe7cbSNicholas Bellinger */ 2905c66ac9dbSNicholas Bellinger config_item_put(item); 2906c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 2907c66ac9dbSNicholas Bellinger } 2908c66ac9dbSNicholas Bellinger 2909c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_hba_group_ops = { 2910c66ac9dbSNicholas Bellinger .make_group = target_core_make_subdev, 2911c66ac9dbSNicholas Bellinger .drop_item = target_core_drop_subdev, 2912c66ac9dbSNicholas Bellinger }; 2913c66ac9dbSNicholas Bellinger 2914c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); 2915c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR(_name, _mode) \ 2916c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2917c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2918c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2919c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name, \ 2920c66ac9dbSNicholas Bellinger target_core_hba_store_attr_##_name); 2921c66ac9dbSNicholas Bellinger 2922c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR_RO(_name) \ 2923c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2924c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2925c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2926c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name); 2927c66ac9dbSNicholas Bellinger 2928c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_info( 2929c66ac9dbSNicholas Bellinger struct se_hba *hba, 2930c66ac9dbSNicholas Bellinger char *page) 2931c66ac9dbSNicholas Bellinger { 2932c66ac9dbSNicholas Bellinger return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 2933c66ac9dbSNicholas Bellinger hba->hba_id, hba->transport->name, 2934c66ac9dbSNicholas Bellinger TARGET_CORE_CONFIGFS_VERSION); 2935c66ac9dbSNicholas Bellinger } 2936c66ac9dbSNicholas Bellinger 2937c66ac9dbSNicholas Bellinger SE_HBA_ATTR_RO(hba_info); 2938c66ac9dbSNicholas Bellinger 2939c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, 2940c66ac9dbSNicholas Bellinger char *page) 2941c66ac9dbSNicholas Bellinger { 2942c66ac9dbSNicholas Bellinger int hba_mode = 0; 2943c66ac9dbSNicholas Bellinger 2944c66ac9dbSNicholas Bellinger if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 2945c66ac9dbSNicholas Bellinger hba_mode = 1; 2946c66ac9dbSNicholas Bellinger 2947c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", hba_mode); 2948c66ac9dbSNicholas Bellinger } 2949c66ac9dbSNicholas Bellinger 2950c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, 2951c66ac9dbSNicholas Bellinger const char *page, size_t count) 2952c66ac9dbSNicholas Bellinger { 2953c66ac9dbSNicholas Bellinger struct se_subsystem_api *transport = hba->transport; 2954c66ac9dbSNicholas Bellinger unsigned long mode_flag; 2955c66ac9dbSNicholas Bellinger int ret; 2956c66ac9dbSNicholas Bellinger 2957c66ac9dbSNicholas Bellinger if (transport->pmode_enable_hba == NULL) 2958c66ac9dbSNicholas Bellinger return -EINVAL; 2959c66ac9dbSNicholas Bellinger 2960c66ac9dbSNicholas Bellinger ret = strict_strtoul(page, 0, &mode_flag); 2961c66ac9dbSNicholas Bellinger if (ret < 0) { 29626708bb27SAndy Grover pr_err("Unable to extract hba mode flag: %d\n", ret); 2963c66ac9dbSNicholas Bellinger return -EINVAL; 2964c66ac9dbSNicholas Bellinger } 2965c66ac9dbSNicholas Bellinger 2966c66ac9dbSNicholas Bellinger spin_lock(&hba->device_lock); 29676708bb27SAndy Grover if (!list_empty(&hba->hba_dev_list)) { 29686708bb27SAndy Grover pr_err("Unable to set hba_mode with active devices\n"); 2969c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 2970c66ac9dbSNicholas Bellinger return -EINVAL; 2971c66ac9dbSNicholas Bellinger } 2972c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 2973c66ac9dbSNicholas Bellinger 2974c66ac9dbSNicholas Bellinger ret = transport->pmode_enable_hba(hba, mode_flag); 2975c66ac9dbSNicholas Bellinger if (ret < 0) 2976c66ac9dbSNicholas Bellinger return -EINVAL; 2977c66ac9dbSNicholas Bellinger if (ret > 0) 2978c66ac9dbSNicholas Bellinger hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 2979c66ac9dbSNicholas Bellinger else if (ret == 0) 2980c66ac9dbSNicholas Bellinger hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 2981c66ac9dbSNicholas Bellinger 2982c66ac9dbSNicholas Bellinger return count; 2983c66ac9dbSNicholas Bellinger } 2984c66ac9dbSNicholas Bellinger 2985c66ac9dbSNicholas Bellinger SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); 2986c66ac9dbSNicholas Bellinger 2987c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); 2988c66ac9dbSNicholas Bellinger 29891f6fe7cbSNicholas Bellinger static void target_core_hba_release(struct config_item *item) 29901f6fe7cbSNicholas Bellinger { 29911f6fe7cbSNicholas Bellinger struct se_hba *hba = container_of(to_config_group(item), 29921f6fe7cbSNicholas Bellinger struct se_hba, hba_group); 29931f6fe7cbSNicholas Bellinger core_delete_hba(hba); 29941f6fe7cbSNicholas Bellinger } 29951f6fe7cbSNicholas Bellinger 2996c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_hba_attrs[] = { 2997c66ac9dbSNicholas Bellinger &target_core_hba_hba_info.attr, 2998c66ac9dbSNicholas Bellinger &target_core_hba_hba_mode.attr, 2999c66ac9dbSNicholas Bellinger NULL, 3000c66ac9dbSNicholas Bellinger }; 3001c66ac9dbSNicholas Bellinger 3002c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_hba_item_ops = { 30031f6fe7cbSNicholas Bellinger .release = target_core_hba_release, 3004c66ac9dbSNicholas Bellinger .show_attribute = target_core_hba_attr_show, 3005c66ac9dbSNicholas Bellinger .store_attribute = target_core_hba_attr_store, 3006c66ac9dbSNicholas Bellinger }; 3007c66ac9dbSNicholas Bellinger 3008c66ac9dbSNicholas Bellinger static struct config_item_type target_core_hba_cit = { 3009c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_hba_item_ops, 3010c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_hba_group_ops, 3011c66ac9dbSNicholas Bellinger .ct_attrs = target_core_hba_attrs, 3012c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3013c66ac9dbSNicholas Bellinger }; 3014c66ac9dbSNicholas Bellinger 3015c66ac9dbSNicholas Bellinger static struct config_group *target_core_call_addhbatotarget( 3016c66ac9dbSNicholas Bellinger struct config_group *group, 3017c66ac9dbSNicholas Bellinger const char *name) 3018c66ac9dbSNicholas Bellinger { 3019c66ac9dbSNicholas Bellinger char *se_plugin_str, *str, *str2; 3020c66ac9dbSNicholas Bellinger struct se_hba *hba; 3021c66ac9dbSNicholas Bellinger char buf[TARGET_CORE_NAME_MAX_LEN]; 3022c66ac9dbSNicholas Bellinger unsigned long plugin_dep_id = 0; 3023c66ac9dbSNicholas Bellinger int ret; 3024c66ac9dbSNicholas Bellinger 3025c66ac9dbSNicholas Bellinger memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); 302660d645a4SDan Carpenter if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 30276708bb27SAndy Grover pr_err("Passed *name strlen(): %d exceeds" 3028c66ac9dbSNicholas Bellinger " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 3029c66ac9dbSNicholas Bellinger TARGET_CORE_NAME_MAX_LEN); 3030c66ac9dbSNicholas Bellinger return ERR_PTR(-ENAMETOOLONG); 3031c66ac9dbSNicholas Bellinger } 3032c66ac9dbSNicholas Bellinger snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 3033c66ac9dbSNicholas Bellinger 3034c66ac9dbSNicholas Bellinger str = strstr(buf, "_"); 30356708bb27SAndy Grover if (!str) { 30366708bb27SAndy Grover pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 3037c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 3038c66ac9dbSNicholas Bellinger } 3039c66ac9dbSNicholas Bellinger se_plugin_str = buf; 3040c66ac9dbSNicholas Bellinger /* 3041c66ac9dbSNicholas Bellinger * Special case for subsystem plugins that have "_" in their names. 3042c66ac9dbSNicholas Bellinger * Namely rd_direct and rd_mcp.. 3043c66ac9dbSNicholas Bellinger */ 3044c66ac9dbSNicholas Bellinger str2 = strstr(str+1, "_"); 30456708bb27SAndy Grover if (str2) { 3046c66ac9dbSNicholas Bellinger *str2 = '\0'; /* Terminate for *se_plugin_str */ 3047c66ac9dbSNicholas Bellinger str2++; /* Skip to start of plugin dependent ID */ 3048c66ac9dbSNicholas Bellinger str = str2; 3049c66ac9dbSNicholas Bellinger } else { 3050c66ac9dbSNicholas Bellinger *str = '\0'; /* Terminate for *se_plugin_str */ 3051c66ac9dbSNicholas Bellinger str++; /* Skip to start of plugin dependent ID */ 3052c66ac9dbSNicholas Bellinger } 3053c66ac9dbSNicholas Bellinger 3054c66ac9dbSNicholas Bellinger ret = strict_strtoul(str, 0, &plugin_dep_id); 3055c66ac9dbSNicholas Bellinger if (ret < 0) { 30566708bb27SAndy Grover pr_err("strict_strtoul() returned %d for" 3057c66ac9dbSNicholas Bellinger " plugin_dep_id\n", ret); 3058c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 3059c66ac9dbSNicholas Bellinger } 3060c66ac9dbSNicholas Bellinger /* 3061c66ac9dbSNicholas Bellinger * Load up TCM subsystem plugins if they have not already been loaded. 3062c66ac9dbSNicholas Bellinger */ 3063dbc5623eSNicholas Bellinger transport_subsystem_check_init(); 3064c66ac9dbSNicholas Bellinger 3065c66ac9dbSNicholas Bellinger hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 3066c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 3067c66ac9dbSNicholas Bellinger return ERR_CAST(hba); 3068c66ac9dbSNicholas Bellinger 3069c66ac9dbSNicholas Bellinger config_group_init_type_name(&hba->hba_group, name, 3070c66ac9dbSNicholas Bellinger &target_core_hba_cit); 3071c66ac9dbSNicholas Bellinger 3072c66ac9dbSNicholas Bellinger return &hba->hba_group; 3073c66ac9dbSNicholas Bellinger } 3074c66ac9dbSNicholas Bellinger 3075c66ac9dbSNicholas Bellinger static void target_core_call_delhbafromtarget( 3076c66ac9dbSNicholas Bellinger struct config_group *group, 3077c66ac9dbSNicholas Bellinger struct config_item *item) 3078c66ac9dbSNicholas Bellinger { 30791f6fe7cbSNicholas Bellinger /* 30801f6fe7cbSNicholas Bellinger * core_delete_hba() is called from target_core_hba_item_ops->release() 30811f6fe7cbSNicholas Bellinger * -> target_core_hba_release() 30821f6fe7cbSNicholas Bellinger */ 3083c66ac9dbSNicholas Bellinger config_item_put(item); 3084c66ac9dbSNicholas Bellinger } 3085c66ac9dbSNicholas Bellinger 3086c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_group_ops = { 3087c66ac9dbSNicholas Bellinger .make_group = target_core_call_addhbatotarget, 3088c66ac9dbSNicholas Bellinger .drop_item = target_core_call_delhbafromtarget, 3089c66ac9dbSNicholas Bellinger }; 3090c66ac9dbSNicholas Bellinger 3091c66ac9dbSNicholas Bellinger static struct config_item_type target_core_cit = { 3092c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3093c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_group_ops, 3094c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3095c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3096c66ac9dbSNicholas Bellinger }; 3097c66ac9dbSNicholas Bellinger 3098c66ac9dbSNicholas Bellinger /* Stop functions for struct config_item_type target_core_hba_cit */ 3099c66ac9dbSNicholas Bellinger 310054550fabSAxel Lin static int __init target_core_init_configfs(void) 3101c66ac9dbSNicholas Bellinger { 3102c66ac9dbSNicholas Bellinger struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; 3103c66ac9dbSNicholas Bellinger struct config_group *lu_gp_cg = NULL; 3104c66ac9dbSNicholas Bellinger struct configfs_subsystem *subsys; 3105c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 3106c66ac9dbSNicholas Bellinger int ret; 3107c66ac9dbSNicholas Bellinger 31086708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 3109c66ac9dbSNicholas Bellinger " Engine: %s on %s/%s on "UTS_RELEASE"\n", 3110c66ac9dbSNicholas Bellinger TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 3111c66ac9dbSNicholas Bellinger 3112c66ac9dbSNicholas Bellinger subsys = target_core_subsystem[0]; 3113c66ac9dbSNicholas Bellinger config_group_init(&subsys->su_group); 3114c66ac9dbSNicholas Bellinger mutex_init(&subsys->su_mutex); 3115c66ac9dbSNicholas Bellinger 3116c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&g_tf_list); 3117c66ac9dbSNicholas Bellinger mutex_init(&g_tf_lock); 3118e3d6f909SAndy Grover ret = init_se_kmem_caches(); 3119c66ac9dbSNicholas Bellinger if (ret < 0) 3120e3d6f909SAndy Grover return ret; 3121c66ac9dbSNicholas Bellinger /* 3122c66ac9dbSNicholas Bellinger * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 3123c66ac9dbSNicholas Bellinger * and ALUA Logical Unit Group and Target Port Group infrastructure. 3124c66ac9dbSNicholas Bellinger */ 3125c66ac9dbSNicholas Bellinger target_cg = &subsys->su_group; 3126c66ac9dbSNicholas Bellinger target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 3127c66ac9dbSNicholas Bellinger GFP_KERNEL); 31286708bb27SAndy Grover if (!target_cg->default_groups) { 31296708bb27SAndy Grover pr_err("Unable to allocate target_cg->default_groups\n"); 3130c66ac9dbSNicholas Bellinger goto out_global; 3131c66ac9dbSNicholas Bellinger } 3132c66ac9dbSNicholas Bellinger 3133e3d6f909SAndy Grover config_group_init_type_name(&target_core_hbagroup, 3134c66ac9dbSNicholas Bellinger "core", &target_core_cit); 3135e3d6f909SAndy Grover target_cg->default_groups[0] = &target_core_hbagroup; 3136c66ac9dbSNicholas Bellinger target_cg->default_groups[1] = NULL; 3137c66ac9dbSNicholas Bellinger /* 3138c66ac9dbSNicholas Bellinger * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 3139c66ac9dbSNicholas Bellinger */ 3140e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 3141c66ac9dbSNicholas Bellinger hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 3142c66ac9dbSNicholas Bellinger GFP_KERNEL); 31436708bb27SAndy Grover if (!hba_cg->default_groups) { 31446708bb27SAndy Grover pr_err("Unable to allocate hba_cg->default_groups\n"); 3145c66ac9dbSNicholas Bellinger goto out_global; 3146c66ac9dbSNicholas Bellinger } 3147e3d6f909SAndy Grover config_group_init_type_name(&alua_group, 3148c66ac9dbSNicholas Bellinger "alua", &target_core_alua_cit); 3149e3d6f909SAndy Grover hba_cg->default_groups[0] = &alua_group; 3150c66ac9dbSNicholas Bellinger hba_cg->default_groups[1] = NULL; 3151c66ac9dbSNicholas Bellinger /* 3152c66ac9dbSNicholas Bellinger * Add ALUA Logical Unit Group and Target Port Group ConfigFS 3153c66ac9dbSNicholas Bellinger * groups under /sys/kernel/config/target/core/alua/ 3154c66ac9dbSNicholas Bellinger */ 3155e3d6f909SAndy Grover alua_cg = &alua_group; 3156c66ac9dbSNicholas Bellinger alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 3157c66ac9dbSNicholas Bellinger GFP_KERNEL); 31586708bb27SAndy Grover if (!alua_cg->default_groups) { 31596708bb27SAndy Grover pr_err("Unable to allocate alua_cg->default_groups\n"); 3160c66ac9dbSNicholas Bellinger goto out_global; 3161c66ac9dbSNicholas Bellinger } 3162c66ac9dbSNicholas Bellinger 3163e3d6f909SAndy Grover config_group_init_type_name(&alua_lu_gps_group, 3164c66ac9dbSNicholas Bellinger "lu_gps", &target_core_alua_lu_gps_cit); 3165e3d6f909SAndy Grover alua_cg->default_groups[0] = &alua_lu_gps_group; 3166c66ac9dbSNicholas Bellinger alua_cg->default_groups[1] = NULL; 3167c66ac9dbSNicholas Bellinger /* 3168c66ac9dbSNicholas Bellinger * Add core/alua/lu_gps/default_lu_gp 3169c66ac9dbSNicholas Bellinger */ 3170c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 3171c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 3172c66ac9dbSNicholas Bellinger goto out_global; 3173c66ac9dbSNicholas Bellinger 3174e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 3175c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 3176c66ac9dbSNicholas Bellinger GFP_KERNEL); 31776708bb27SAndy Grover if (!lu_gp_cg->default_groups) { 31786708bb27SAndy Grover pr_err("Unable to allocate lu_gp_cg->default_groups\n"); 3179c66ac9dbSNicholas Bellinger goto out_global; 3180c66ac9dbSNicholas Bellinger } 3181c66ac9dbSNicholas Bellinger 3182c66ac9dbSNicholas Bellinger config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 3183c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 3184c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; 3185c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[1] = NULL; 3186e3d6f909SAndy Grover default_lu_gp = lu_gp; 3187c66ac9dbSNicholas Bellinger /* 3188c66ac9dbSNicholas Bellinger * Register the target_core_mod subsystem with configfs. 3189c66ac9dbSNicholas Bellinger */ 3190c66ac9dbSNicholas Bellinger ret = configfs_register_subsystem(subsys); 3191c66ac9dbSNicholas Bellinger if (ret < 0) { 31926708bb27SAndy Grover pr_err("Error %d while registering subsystem %s\n", 3193c66ac9dbSNicholas Bellinger ret, subsys->su_group.cg_item.ci_namebuf); 3194c66ac9dbSNicholas Bellinger goto out_global; 3195c66ac9dbSNicholas Bellinger } 31966708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 3197c66ac9dbSNicholas Bellinger " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" 3198c66ac9dbSNicholas Bellinger " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 3199c66ac9dbSNicholas Bellinger /* 3200c66ac9dbSNicholas Bellinger * Register built-in RAMDISK subsystem logic for virtual LUN 0 3201c66ac9dbSNicholas Bellinger */ 3202c66ac9dbSNicholas Bellinger ret = rd_module_init(); 3203c66ac9dbSNicholas Bellinger if (ret < 0) 3204c66ac9dbSNicholas Bellinger goto out; 3205c66ac9dbSNicholas Bellinger 3206c66ac9dbSNicholas Bellinger if (core_dev_setup_virtual_lun0() < 0) 3207c66ac9dbSNicholas Bellinger goto out; 3208c66ac9dbSNicholas Bellinger 3209c66ac9dbSNicholas Bellinger return 0; 3210c66ac9dbSNicholas Bellinger 3211c66ac9dbSNicholas Bellinger out: 3212c66ac9dbSNicholas Bellinger configfs_unregister_subsystem(subsys); 3213c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3214c66ac9dbSNicholas Bellinger rd_module_exit(); 3215c66ac9dbSNicholas Bellinger out_global: 3216e3d6f909SAndy Grover if (default_lu_gp) { 3217e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3218e3d6f909SAndy Grover default_lu_gp = NULL; 3219c66ac9dbSNicholas Bellinger } 3220c66ac9dbSNicholas Bellinger if (lu_gp_cg) 3221c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 3222c66ac9dbSNicholas Bellinger if (alua_cg) 3223c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 3224c66ac9dbSNicholas Bellinger if (hba_cg) 3225c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 3226c66ac9dbSNicholas Bellinger kfree(target_cg->default_groups); 3227e3d6f909SAndy Grover release_se_kmem_caches(); 3228e3d6f909SAndy Grover return ret; 3229c66ac9dbSNicholas Bellinger } 3230c66ac9dbSNicholas Bellinger 323154550fabSAxel Lin static void __exit target_core_exit_configfs(void) 3232c66ac9dbSNicholas Bellinger { 3233c66ac9dbSNicholas Bellinger struct configfs_subsystem *subsys; 3234c66ac9dbSNicholas Bellinger struct config_group *hba_cg, *alua_cg, *lu_gp_cg; 3235c66ac9dbSNicholas Bellinger struct config_item *item; 3236c66ac9dbSNicholas Bellinger int i; 3237c66ac9dbSNicholas Bellinger 3238c66ac9dbSNicholas Bellinger subsys = target_core_subsystem[0]; 3239c66ac9dbSNicholas Bellinger 3240e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 3241c66ac9dbSNicholas Bellinger for (i = 0; lu_gp_cg->default_groups[i]; i++) { 3242c66ac9dbSNicholas Bellinger item = &lu_gp_cg->default_groups[i]->cg_item; 3243c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[i] = NULL; 3244c66ac9dbSNicholas Bellinger config_item_put(item); 3245c66ac9dbSNicholas Bellinger } 3246c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 32477c2bf6e9SNicholas Bellinger lu_gp_cg->default_groups = NULL; 3248c66ac9dbSNicholas Bellinger 3249e3d6f909SAndy Grover alua_cg = &alua_group; 3250c66ac9dbSNicholas Bellinger for (i = 0; alua_cg->default_groups[i]; i++) { 3251c66ac9dbSNicholas Bellinger item = &alua_cg->default_groups[i]->cg_item; 3252c66ac9dbSNicholas Bellinger alua_cg->default_groups[i] = NULL; 3253c66ac9dbSNicholas Bellinger config_item_put(item); 3254c66ac9dbSNicholas Bellinger } 3255c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 32567c2bf6e9SNicholas Bellinger alua_cg->default_groups = NULL; 3257c66ac9dbSNicholas Bellinger 3258e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 3259c66ac9dbSNicholas Bellinger for (i = 0; hba_cg->default_groups[i]; i++) { 3260c66ac9dbSNicholas Bellinger item = &hba_cg->default_groups[i]->cg_item; 3261c66ac9dbSNicholas Bellinger hba_cg->default_groups[i] = NULL; 3262c66ac9dbSNicholas Bellinger config_item_put(item); 3263c66ac9dbSNicholas Bellinger } 3264c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 32657c2bf6e9SNicholas Bellinger hba_cg->default_groups = NULL; 32667c2bf6e9SNicholas Bellinger /* 32677c2bf6e9SNicholas Bellinger * We expect subsys->su_group.default_groups to be released 32687c2bf6e9SNicholas Bellinger * by configfs subsystem provider logic.. 32697c2bf6e9SNicholas Bellinger */ 32707c2bf6e9SNicholas Bellinger configfs_unregister_subsystem(subsys); 3271c66ac9dbSNicholas Bellinger kfree(subsys->su_group.default_groups); 3272c66ac9dbSNicholas Bellinger 3273e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3274e3d6f909SAndy Grover default_lu_gp = NULL; 32757c2bf6e9SNicholas Bellinger 32766708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3277c66ac9dbSNicholas Bellinger " Infrastructure\n"); 3278c66ac9dbSNicholas Bellinger 3279c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3280c66ac9dbSNicholas Bellinger rd_module_exit(); 3281e3d6f909SAndy Grover release_se_kmem_caches(); 3282c66ac9dbSNicholas Bellinger } 3283c66ac9dbSNicholas Bellinger 3284c66ac9dbSNicholas Bellinger MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3285c66ac9dbSNicholas Bellinger MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3286c66ac9dbSNicholas Bellinger MODULE_LICENSE("GPL"); 3287c66ac9dbSNicholas Bellinger 3288c66ac9dbSNicholas Bellinger module_init(target_core_init_configfs); 3289c66ac9dbSNicholas Bellinger module_exit(target_core_exit_configfs); 3290