1c66ac9dbSNicholas Bellinger /******************************************************************************* 2c66ac9dbSNicholas Bellinger * Filename: target_core_configfs.c 3c66ac9dbSNicholas Bellinger * 4c66ac9dbSNicholas Bellinger * This file contains ConfigFS logic for the Generic Target Engine project. 5c66ac9dbSNicholas Bellinger * 64c76251eSNicholas Bellinger * (c) Copyright 2008-2013 Datera, Inc. 7c66ac9dbSNicholas Bellinger * 8c66ac9dbSNicholas Bellinger * Nicholas A. Bellinger <nab@kernel.org> 9c66ac9dbSNicholas Bellinger * 10c66ac9dbSNicholas Bellinger * based on configfs Copyright (C) 2005 Oracle. All rights reserved. 11c66ac9dbSNicholas Bellinger * 12c66ac9dbSNicholas Bellinger * This program is free software; you can redistribute it and/or modify 13c66ac9dbSNicholas Bellinger * it under the terms of the GNU General Public License as published by 14c66ac9dbSNicholas Bellinger * the Free Software Foundation; either version 2 of the License, or 15c66ac9dbSNicholas Bellinger * (at your option) any later version. 16c66ac9dbSNicholas Bellinger * 17c66ac9dbSNicholas Bellinger * This program is distributed in the hope that it will be useful, 18c66ac9dbSNicholas Bellinger * but WITHOUT ANY WARRANTY; without even the implied warranty of 19c66ac9dbSNicholas Bellinger * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20c66ac9dbSNicholas Bellinger * GNU General Public License for more details. 21c66ac9dbSNicholas Bellinger ****************************************************************************/ 22c66ac9dbSNicholas Bellinger 23c66ac9dbSNicholas Bellinger #include <linux/module.h> 24c66ac9dbSNicholas Bellinger #include <linux/moduleparam.h> 25c66ac9dbSNicholas Bellinger #include <generated/utsrelease.h> 26c66ac9dbSNicholas Bellinger #include <linux/utsname.h> 27c66ac9dbSNicholas Bellinger #include <linux/init.h> 28c66ac9dbSNicholas Bellinger #include <linux/fs.h> 29c66ac9dbSNicholas Bellinger #include <linux/namei.h> 30c66ac9dbSNicholas Bellinger #include <linux/slab.h> 31c66ac9dbSNicholas Bellinger #include <linux/types.h> 32c66ac9dbSNicholas Bellinger #include <linux/delay.h> 33c66ac9dbSNicholas Bellinger #include <linux/unistd.h> 34c66ac9dbSNicholas Bellinger #include <linux/string.h> 35c66ac9dbSNicholas Bellinger #include <linux/parser.h> 36c66ac9dbSNicholas Bellinger #include <linux/syscalls.h> 37c66ac9dbSNicholas Bellinger #include <linux/configfs.h> 38e3d6f909SAndy Grover #include <linux/spinlock.h> 39c66ac9dbSNicholas Bellinger 40c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 41c4795fb2SChristoph Hellwig #include <target/target_core_backend.h> 42c4795fb2SChristoph Hellwig #include <target/target_core_fabric.h> 43c66ac9dbSNicholas Bellinger #include <target/target_core_fabric_configfs.h> 44c66ac9dbSNicholas Bellinger #include <target/target_core_configfs.h> 45c66ac9dbSNicholas Bellinger #include <target/configfs_macros.h> 46c66ac9dbSNicholas Bellinger 47e26d99aeSChristoph Hellwig #include "target_core_internal.h" 48c66ac9dbSNicholas Bellinger #include "target_core_alua.h" 49c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 50c66ac9dbSNicholas Bellinger #include "target_core_rd.h" 51f99715acSNicholas Bellinger #include "target_core_xcopy.h" 52c66ac9dbSNicholas Bellinger 5373112edcSNicholas Bellinger #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ 5473112edcSNicholas Bellinger static void target_core_setup_##_name##_cit(struct se_subsystem_api *sa) \ 5573112edcSNicholas Bellinger { \ 5673112edcSNicholas Bellinger struct target_backend_cits *tbc = &sa->tb_cits; \ 5773112edcSNicholas Bellinger struct config_item_type *cit = &tbc->tb_##_name##_cit; \ 5873112edcSNicholas Bellinger \ 5973112edcSNicholas Bellinger cit->ct_item_ops = _item_ops; \ 6073112edcSNicholas Bellinger cit->ct_group_ops = _group_ops; \ 6173112edcSNicholas Bellinger cit->ct_attrs = _attrs; \ 6273112edcSNicholas Bellinger cit->ct_owner = sa->owner; \ 6373112edcSNicholas Bellinger pr_debug("Setup generic %s\n", __stringify(_name)); \ 6473112edcSNicholas Bellinger } 6573112edcSNicholas Bellinger 66e3d6f909SAndy Grover extern struct t10_alua_lu_gp *default_lu_gp; 67e3d6f909SAndy Grover 68d0f474e5SRoland Dreier static LIST_HEAD(g_tf_list); 69d0f474e5SRoland Dreier static DEFINE_MUTEX(g_tf_lock); 70c66ac9dbSNicholas Bellinger 71c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute { 72c66ac9dbSNicholas Bellinger struct configfs_attribute attr; 73c66ac9dbSNicholas Bellinger ssize_t (*show)(void *, char *); 74c66ac9dbSNicholas Bellinger ssize_t (*store)(void *, const char *, size_t); 75c66ac9dbSNicholas Bellinger }; 76c66ac9dbSNicholas Bellinger 77e3d6f909SAndy Grover static struct config_group target_core_hbagroup; 78e3d6f909SAndy Grover static struct config_group alua_group; 79e3d6f909SAndy Grover static struct config_group alua_lu_gps_group; 80e3d6f909SAndy Grover 81c66ac9dbSNicholas Bellinger static inline struct se_hba * 82c66ac9dbSNicholas Bellinger item_to_hba(struct config_item *item) 83c66ac9dbSNicholas Bellinger { 84c66ac9dbSNicholas Bellinger return container_of(to_config_group(item), struct se_hba, hba_group); 85c66ac9dbSNicholas Bellinger } 86c66ac9dbSNicholas Bellinger 87c66ac9dbSNicholas Bellinger /* 88c66ac9dbSNicholas Bellinger * Attributes for /sys/kernel/config/target/ 89c66ac9dbSNicholas Bellinger */ 90c66ac9dbSNicholas Bellinger static ssize_t target_core_attr_show(struct config_item *item, 91c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 92c66ac9dbSNicholas Bellinger char *page) 93c66ac9dbSNicholas Bellinger { 94c66ac9dbSNicholas Bellinger return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" 95c66ac9dbSNicholas Bellinger " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, 96c66ac9dbSNicholas Bellinger utsname()->sysname, utsname()->machine); 97c66ac9dbSNicholas Bellinger } 98c66ac9dbSNicholas Bellinger 99c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_fabric_item_ops = { 100c66ac9dbSNicholas Bellinger .show_attribute = target_core_attr_show, 101c66ac9dbSNicholas Bellinger }; 102c66ac9dbSNicholas Bellinger 103c66ac9dbSNicholas Bellinger static struct configfs_attribute target_core_item_attr_version = { 104c66ac9dbSNicholas Bellinger .ca_owner = THIS_MODULE, 105c66ac9dbSNicholas Bellinger .ca_name = "version", 106c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO, 107c66ac9dbSNicholas Bellinger }; 108c66ac9dbSNicholas Bellinger 109c66ac9dbSNicholas Bellinger static struct target_fabric_configfs *target_core_get_fabric( 110c66ac9dbSNicholas Bellinger const char *name) 111c66ac9dbSNicholas Bellinger { 112c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 113c66ac9dbSNicholas Bellinger 1146708bb27SAndy Grover if (!name) 115c66ac9dbSNicholas Bellinger return NULL; 116c66ac9dbSNicholas Bellinger 117c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 118c66ac9dbSNicholas Bellinger list_for_each_entry(tf, &g_tf_list, tf_list) { 1196708bb27SAndy Grover if (!strcmp(tf->tf_name, name)) { 120c66ac9dbSNicholas Bellinger atomic_inc(&tf->tf_access_cnt); 121c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 122c66ac9dbSNicholas Bellinger return tf; 123c66ac9dbSNicholas Bellinger } 124c66ac9dbSNicholas Bellinger } 125c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 126c66ac9dbSNicholas Bellinger 127c66ac9dbSNicholas Bellinger return NULL; 128c66ac9dbSNicholas Bellinger } 129c66ac9dbSNicholas Bellinger 130c66ac9dbSNicholas Bellinger /* 131c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->make_group() 132c66ac9dbSNicholas Bellinger */ 133c66ac9dbSNicholas Bellinger static struct config_group *target_core_register_fabric( 134c66ac9dbSNicholas Bellinger struct config_group *group, 135c66ac9dbSNicholas Bellinger const char *name) 136c66ac9dbSNicholas Bellinger { 137c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 138c66ac9dbSNicholas Bellinger int ret; 139c66ac9dbSNicholas Bellinger 1406708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" 141c66ac9dbSNicholas Bellinger " %s\n", group, name); 142e7b7af6eSRoland Dreier 143e7b7af6eSRoland Dreier tf = target_core_get_fabric(name); 144e7b7af6eSRoland Dreier if (!tf) { 145e7b7af6eSRoland Dreier pr_err("target_core_register_fabric() trying autoload for %s\n", 146e7b7af6eSRoland Dreier name); 147e7b7af6eSRoland Dreier 148c66ac9dbSNicholas Bellinger /* 149c66ac9dbSNicholas Bellinger * Below are some hardcoded request_module() calls to automatically 150c66ac9dbSNicholas Bellinger * local fabric modules when the following is called: 151c66ac9dbSNicholas Bellinger * 152c66ac9dbSNicholas Bellinger * mkdir -p /sys/kernel/config/target/$MODULE_NAME 153c66ac9dbSNicholas Bellinger * 154c66ac9dbSNicholas Bellinger * Note that this does not limit which TCM fabric module can be 155c66ac9dbSNicholas Bellinger * registered, but simply provids auto loading logic for modules with 156c66ac9dbSNicholas Bellinger * mkdir(2) system calls with known TCM fabric modules. 157c66ac9dbSNicholas Bellinger */ 158e7b7af6eSRoland Dreier 1596708bb27SAndy Grover if (!strncmp(name, "iscsi", 5)) { 160c66ac9dbSNicholas Bellinger /* 161c66ac9dbSNicholas Bellinger * Automatically load the LIO Target fabric module when the 162c66ac9dbSNicholas Bellinger * following is called: 163c66ac9dbSNicholas Bellinger * 164c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/iscsi 165c66ac9dbSNicholas Bellinger */ 166c66ac9dbSNicholas Bellinger ret = request_module("iscsi_target_mod"); 167c66ac9dbSNicholas Bellinger if (ret < 0) { 1686708bb27SAndy Grover pr_err("request_module() failed for" 169c66ac9dbSNicholas Bellinger " iscsi_target_mod.ko: %d\n", ret); 170c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 171c66ac9dbSNicholas Bellinger } 1726708bb27SAndy Grover } else if (!strncmp(name, "loopback", 8)) { 173c66ac9dbSNicholas Bellinger /* 174c66ac9dbSNicholas Bellinger * Automatically load the tcm_loop fabric module when the 175c66ac9dbSNicholas Bellinger * following is called: 176c66ac9dbSNicholas Bellinger * 177c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/loopback 178c66ac9dbSNicholas Bellinger */ 179c66ac9dbSNicholas Bellinger ret = request_module("tcm_loop"); 180c66ac9dbSNicholas Bellinger if (ret < 0) { 1816708bb27SAndy Grover pr_err("request_module() failed for" 182c66ac9dbSNicholas Bellinger " tcm_loop.ko: %d\n", ret); 183c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 184c66ac9dbSNicholas Bellinger } 185c66ac9dbSNicholas Bellinger } 186c66ac9dbSNicholas Bellinger 187c66ac9dbSNicholas Bellinger tf = target_core_get_fabric(name); 188e7b7af6eSRoland Dreier } 189e7b7af6eSRoland Dreier 1906708bb27SAndy Grover if (!tf) { 1916708bb27SAndy Grover pr_err("target_core_get_fabric() failed for %s\n", 192c66ac9dbSNicholas Bellinger name); 193c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 194c66ac9dbSNicholas Bellinger } 1956708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" 196c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 197c66ac9dbSNicholas Bellinger /* 198c66ac9dbSNicholas Bellinger * On a successful target_core_get_fabric() look, the returned 199c66ac9dbSNicholas Bellinger * struct target_fabric_configfs *tf will contain a usage reference. 200c66ac9dbSNicholas Bellinger */ 2016708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", 202d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_wwn_cit); 203c66ac9dbSNicholas Bellinger 204c66ac9dbSNicholas Bellinger tf->tf_group.default_groups = tf->tf_default_groups; 205c66ac9dbSNicholas Bellinger tf->tf_group.default_groups[0] = &tf->tf_disc_group; 206c66ac9dbSNicholas Bellinger tf->tf_group.default_groups[1] = NULL; 207c66ac9dbSNicholas Bellinger 208c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_group, name, 209d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_wwn_cit); 210c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 211d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_discovery_cit); 212c66ac9dbSNicholas Bellinger 2136708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" 214c66ac9dbSNicholas Bellinger " %s\n", tf->tf_group.cg_item.ci_name); 215c66ac9dbSNicholas Bellinger /* 216c66ac9dbSNicholas Bellinger * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() 217c66ac9dbSNicholas Bellinger */ 218c66ac9dbSNicholas Bellinger tf->tf_ops.tf_subsys = tf->tf_subsys; 219c66ac9dbSNicholas Bellinger tf->tf_fabric = &tf->tf_group.cg_item; 2206708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" 221c66ac9dbSNicholas Bellinger " for %s\n", name); 222c66ac9dbSNicholas Bellinger 223c66ac9dbSNicholas Bellinger return &tf->tf_group; 224c66ac9dbSNicholas Bellinger } 225c66ac9dbSNicholas Bellinger 226c66ac9dbSNicholas Bellinger /* 227c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->drop_item() 228c66ac9dbSNicholas Bellinger */ 229c66ac9dbSNicholas Bellinger static void target_core_deregister_fabric( 230c66ac9dbSNicholas Bellinger struct config_group *group, 231c66ac9dbSNicholas Bellinger struct config_item *item) 232c66ac9dbSNicholas Bellinger { 233c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf = container_of( 234c66ac9dbSNicholas Bellinger to_config_group(item), struct target_fabric_configfs, tf_group); 235c66ac9dbSNicholas Bellinger struct config_group *tf_group; 236c66ac9dbSNicholas Bellinger struct config_item *df_item; 237c66ac9dbSNicholas Bellinger int i; 238c66ac9dbSNicholas Bellinger 2396708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" 240c66ac9dbSNicholas Bellinger " tf list\n", config_item_name(item)); 241c66ac9dbSNicholas Bellinger 2426708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" 243c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 244c66ac9dbSNicholas Bellinger atomic_dec(&tf->tf_access_cnt); 245c66ac9dbSNicholas Bellinger 2466708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" 247c66ac9dbSNicholas Bellinger " tf->tf_fabric for %s\n", tf->tf_name); 248c66ac9dbSNicholas Bellinger tf->tf_fabric = NULL; 249c66ac9dbSNicholas Bellinger 2506708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" 251c66ac9dbSNicholas Bellinger " %s\n", config_item_name(item)); 252c66ac9dbSNicholas Bellinger 253c66ac9dbSNicholas Bellinger tf_group = &tf->tf_group; 254c66ac9dbSNicholas Bellinger for (i = 0; tf_group->default_groups[i]; i++) { 255c66ac9dbSNicholas Bellinger df_item = &tf_group->default_groups[i]->cg_item; 256c66ac9dbSNicholas Bellinger tf_group->default_groups[i] = NULL; 257c66ac9dbSNicholas Bellinger config_item_put(df_item); 258c66ac9dbSNicholas Bellinger } 259c66ac9dbSNicholas Bellinger config_item_put(item); 260c66ac9dbSNicholas Bellinger } 261c66ac9dbSNicholas Bellinger 262c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_fabric_group_ops = { 263c66ac9dbSNicholas Bellinger .make_group = &target_core_register_fabric, 264c66ac9dbSNicholas Bellinger .drop_item = &target_core_deregister_fabric, 265c66ac9dbSNicholas Bellinger }; 266c66ac9dbSNicholas Bellinger 267c66ac9dbSNicholas Bellinger /* 268c66ac9dbSNicholas Bellinger * All item attributes appearing in /sys/kernel/target/ appear here. 269c66ac9dbSNicholas Bellinger */ 270c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_fabric_item_attrs[] = { 271c66ac9dbSNicholas Bellinger &target_core_item_attr_version, 272c66ac9dbSNicholas Bellinger NULL, 273c66ac9dbSNicholas Bellinger }; 274c66ac9dbSNicholas Bellinger 275c66ac9dbSNicholas Bellinger /* 276c66ac9dbSNicholas Bellinger * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ 277c66ac9dbSNicholas Bellinger */ 278c66ac9dbSNicholas Bellinger static struct config_item_type target_core_fabrics_item = { 279c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_fabric_item_ops, 280c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_fabric_group_ops, 281c66ac9dbSNicholas Bellinger .ct_attrs = target_core_fabric_item_attrs, 282c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 283c66ac9dbSNicholas Bellinger }; 284c66ac9dbSNicholas Bellinger 285c66ac9dbSNicholas Bellinger static struct configfs_subsystem target_core_fabrics = { 286c66ac9dbSNicholas Bellinger .su_group = { 287c66ac9dbSNicholas Bellinger .cg_item = { 288c66ac9dbSNicholas Bellinger .ci_namebuf = "target", 289c66ac9dbSNicholas Bellinger .ci_type = &target_core_fabrics_item, 290c66ac9dbSNicholas Bellinger }, 291c66ac9dbSNicholas Bellinger }, 292c66ac9dbSNicholas Bellinger }; 293c66ac9dbSNicholas Bellinger 29456d128faSNicholas Bellinger struct configfs_subsystem *target_core_subsystem[] = { 295c66ac9dbSNicholas Bellinger &target_core_fabrics, 296c66ac9dbSNicholas Bellinger NULL, 297c66ac9dbSNicholas Bellinger }; 298c66ac9dbSNicholas Bellinger 299c66ac9dbSNicholas Bellinger /*############################################################################## 300c66ac9dbSNicholas Bellinger // Start functions called by external Target Fabrics Modules 301c66ac9dbSNicholas Bellinger //############################################################################*/ 302c66ac9dbSNicholas Bellinger 303c66ac9dbSNicholas Bellinger /* 304c66ac9dbSNicholas Bellinger * First function called by fabric modules to: 305c66ac9dbSNicholas Bellinger * 306c66ac9dbSNicholas Bellinger * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. 307c66ac9dbSNicholas Bellinger * 2) Add struct target_fabric_configfs to g_tf_list 308c66ac9dbSNicholas Bellinger * 3) Return struct target_fabric_configfs to fabric module to be passed 309c66ac9dbSNicholas Bellinger * into target_fabric_configfs_register(). 310c66ac9dbSNicholas Bellinger */ 311c66ac9dbSNicholas Bellinger struct target_fabric_configfs *target_fabric_configfs_init( 312c66ac9dbSNicholas Bellinger struct module *fabric_mod, 313c66ac9dbSNicholas Bellinger const char *name) 314c66ac9dbSNicholas Bellinger { 315c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 316c66ac9dbSNicholas Bellinger 317c66ac9dbSNicholas Bellinger if (!(name)) { 3186708bb27SAndy Grover pr_err("Unable to locate passed fabric name\n"); 319e3d6f909SAndy Grover return ERR_PTR(-EINVAL); 320c66ac9dbSNicholas Bellinger } 32160d645a4SDan Carpenter if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { 3226708bb27SAndy Grover pr_err("Passed name: %s exceeds TARGET_FABRIC" 323c66ac9dbSNicholas Bellinger "_NAME_SIZE\n", name); 324e3d6f909SAndy Grover return ERR_PTR(-EINVAL); 325c66ac9dbSNicholas Bellinger } 326c66ac9dbSNicholas Bellinger 327c66ac9dbSNicholas Bellinger tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); 3286708bb27SAndy Grover if (!tf) 329e3d6f909SAndy Grover return ERR_PTR(-ENOMEM); 330c66ac9dbSNicholas Bellinger 331c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&tf->tf_list); 332c66ac9dbSNicholas Bellinger atomic_set(&tf->tf_access_cnt, 0); 333c66ac9dbSNicholas Bellinger /* 334c66ac9dbSNicholas Bellinger * Setup the default generic struct config_item_type's (cits) in 335c66ac9dbSNicholas Bellinger * struct target_fabric_configfs->tf_cit_tmpl 336c66ac9dbSNicholas Bellinger */ 337c66ac9dbSNicholas Bellinger tf->tf_module = fabric_mod; 338c66ac9dbSNicholas Bellinger target_fabric_setup_cits(tf); 339c66ac9dbSNicholas Bellinger 340c66ac9dbSNicholas Bellinger tf->tf_subsys = target_core_subsystem[0]; 341c66ac9dbSNicholas Bellinger snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); 342c66ac9dbSNicholas Bellinger 343c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 344c66ac9dbSNicholas Bellinger list_add_tail(&tf->tf_list, &g_tf_list); 345c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 346c66ac9dbSNicholas Bellinger 3476708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" 348c66ac9dbSNicholas Bellinger ">>>>>>>>>>>>>>\n"); 3496708bb27SAndy Grover pr_debug("Initialized struct target_fabric_configfs: %p for" 350c66ac9dbSNicholas Bellinger " %s\n", tf, tf->tf_name); 351c66ac9dbSNicholas Bellinger return tf; 352c66ac9dbSNicholas Bellinger } 353c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_init); 354c66ac9dbSNicholas Bellinger 355c66ac9dbSNicholas Bellinger /* 356c66ac9dbSNicholas Bellinger * Called by fabric plugins after FAILED target_fabric_configfs_register() call. 357c66ac9dbSNicholas Bellinger */ 358c66ac9dbSNicholas Bellinger void target_fabric_configfs_free( 359c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 360c66ac9dbSNicholas Bellinger { 361c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 362c66ac9dbSNicholas Bellinger list_del(&tf->tf_list); 363c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 364c66ac9dbSNicholas Bellinger 365c66ac9dbSNicholas Bellinger kfree(tf); 366c66ac9dbSNicholas Bellinger } 367c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_free); 368c66ac9dbSNicholas Bellinger 369c66ac9dbSNicholas Bellinger /* 370c66ac9dbSNicholas Bellinger * Perform a sanity check of the passed tf->tf_ops before completing 371c66ac9dbSNicholas Bellinger * TCM fabric module registration. 372c66ac9dbSNicholas Bellinger */ 373c66ac9dbSNicholas Bellinger static int target_fabric_tf_ops_check( 374c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 375c66ac9dbSNicholas Bellinger { 376c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo = &tf->tf_ops; 377c66ac9dbSNicholas Bellinger 3786708bb27SAndy Grover if (!tfo->get_fabric_name) { 3796708bb27SAndy Grover pr_err("Missing tfo->get_fabric_name()\n"); 380c66ac9dbSNicholas Bellinger return -EINVAL; 381c66ac9dbSNicholas Bellinger } 3826708bb27SAndy Grover if (!tfo->get_fabric_proto_ident) { 3836708bb27SAndy Grover pr_err("Missing tfo->get_fabric_proto_ident()\n"); 384c66ac9dbSNicholas Bellinger return -EINVAL; 385c66ac9dbSNicholas Bellinger } 3866708bb27SAndy Grover if (!tfo->tpg_get_wwn) { 3876708bb27SAndy Grover pr_err("Missing tfo->tpg_get_wwn()\n"); 388c66ac9dbSNicholas Bellinger return -EINVAL; 389c66ac9dbSNicholas Bellinger } 3906708bb27SAndy Grover if (!tfo->tpg_get_tag) { 3916708bb27SAndy Grover pr_err("Missing tfo->tpg_get_tag()\n"); 392c66ac9dbSNicholas Bellinger return -EINVAL; 393c66ac9dbSNicholas Bellinger } 3946708bb27SAndy Grover if (!tfo->tpg_get_default_depth) { 3956708bb27SAndy Grover pr_err("Missing tfo->tpg_get_default_depth()\n"); 396c66ac9dbSNicholas Bellinger return -EINVAL; 397c66ac9dbSNicholas Bellinger } 3986708bb27SAndy Grover if (!tfo->tpg_get_pr_transport_id) { 3996708bb27SAndy Grover pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); 400c66ac9dbSNicholas Bellinger return -EINVAL; 401c66ac9dbSNicholas Bellinger } 4026708bb27SAndy Grover if (!tfo->tpg_get_pr_transport_id_len) { 4036708bb27SAndy Grover pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); 404c66ac9dbSNicholas Bellinger return -EINVAL; 405c66ac9dbSNicholas Bellinger } 4066708bb27SAndy Grover if (!tfo->tpg_check_demo_mode) { 4076708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode()\n"); 408c66ac9dbSNicholas Bellinger return -EINVAL; 409c66ac9dbSNicholas Bellinger } 4106708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_cache) { 4116708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); 412c66ac9dbSNicholas Bellinger return -EINVAL; 413c66ac9dbSNicholas Bellinger } 4146708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_write_protect) { 4156708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); 416c66ac9dbSNicholas Bellinger return -EINVAL; 417c66ac9dbSNicholas Bellinger } 4186708bb27SAndy Grover if (!tfo->tpg_check_prod_mode_write_protect) { 4196708bb27SAndy Grover pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); 420c66ac9dbSNicholas Bellinger return -EINVAL; 421c66ac9dbSNicholas Bellinger } 4226708bb27SAndy Grover if (!tfo->tpg_alloc_fabric_acl) { 4236708bb27SAndy Grover pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); 424c66ac9dbSNicholas Bellinger return -EINVAL; 425c66ac9dbSNicholas Bellinger } 4266708bb27SAndy Grover if (!tfo->tpg_release_fabric_acl) { 4276708bb27SAndy Grover pr_err("Missing tfo->tpg_release_fabric_acl()\n"); 428c66ac9dbSNicholas Bellinger return -EINVAL; 429c66ac9dbSNicholas Bellinger } 4306708bb27SAndy Grover if (!tfo->tpg_get_inst_index) { 4316708bb27SAndy Grover pr_err("Missing tfo->tpg_get_inst_index()\n"); 432c66ac9dbSNicholas Bellinger return -EINVAL; 433c66ac9dbSNicholas Bellinger } 43435462975SChristoph Hellwig if (!tfo->release_cmd) { 4356708bb27SAndy Grover pr_err("Missing tfo->release_cmd()\n"); 436c66ac9dbSNicholas Bellinger return -EINVAL; 437c66ac9dbSNicholas Bellinger } 4386708bb27SAndy Grover if (!tfo->shutdown_session) { 4396708bb27SAndy Grover pr_err("Missing tfo->shutdown_session()\n"); 440c66ac9dbSNicholas Bellinger return -EINVAL; 441c66ac9dbSNicholas Bellinger } 4426708bb27SAndy Grover if (!tfo->close_session) { 4436708bb27SAndy Grover pr_err("Missing tfo->close_session()\n"); 444c66ac9dbSNicholas Bellinger return -EINVAL; 445c66ac9dbSNicholas Bellinger } 4466708bb27SAndy Grover if (!tfo->sess_get_index) { 4476708bb27SAndy Grover pr_err("Missing tfo->sess_get_index()\n"); 448c66ac9dbSNicholas Bellinger return -EINVAL; 449c66ac9dbSNicholas Bellinger } 4506708bb27SAndy Grover if (!tfo->write_pending) { 4516708bb27SAndy Grover pr_err("Missing tfo->write_pending()\n"); 452c66ac9dbSNicholas Bellinger return -EINVAL; 453c66ac9dbSNicholas Bellinger } 4546708bb27SAndy Grover if (!tfo->write_pending_status) { 4556708bb27SAndy Grover pr_err("Missing tfo->write_pending_status()\n"); 456c66ac9dbSNicholas Bellinger return -EINVAL; 457c66ac9dbSNicholas Bellinger } 4586708bb27SAndy Grover if (!tfo->set_default_node_attributes) { 4596708bb27SAndy Grover pr_err("Missing tfo->set_default_node_attributes()\n"); 460c66ac9dbSNicholas Bellinger return -EINVAL; 461c66ac9dbSNicholas Bellinger } 4626708bb27SAndy Grover if (!tfo->get_task_tag) { 4636708bb27SAndy Grover pr_err("Missing tfo->get_task_tag()\n"); 464c66ac9dbSNicholas Bellinger return -EINVAL; 465c66ac9dbSNicholas Bellinger } 4666708bb27SAndy Grover if (!tfo->get_cmd_state) { 4676708bb27SAndy Grover pr_err("Missing tfo->get_cmd_state()\n"); 468c66ac9dbSNicholas Bellinger return -EINVAL; 469c66ac9dbSNicholas Bellinger } 4706708bb27SAndy Grover if (!tfo->queue_data_in) { 4716708bb27SAndy Grover pr_err("Missing tfo->queue_data_in()\n"); 472c66ac9dbSNicholas Bellinger return -EINVAL; 473c66ac9dbSNicholas Bellinger } 4746708bb27SAndy Grover if (!tfo->queue_status) { 4756708bb27SAndy Grover pr_err("Missing tfo->queue_status()\n"); 476c66ac9dbSNicholas Bellinger return -EINVAL; 477c66ac9dbSNicholas Bellinger } 4786708bb27SAndy Grover if (!tfo->queue_tm_rsp) { 4796708bb27SAndy Grover pr_err("Missing tfo->queue_tm_rsp()\n"); 480c66ac9dbSNicholas Bellinger return -EINVAL; 481c66ac9dbSNicholas Bellinger } 482131e6abcSNicholas Bellinger if (!tfo->aborted_task) { 483131e6abcSNicholas Bellinger pr_err("Missing tfo->aborted_task()\n"); 484131e6abcSNicholas Bellinger return -EINVAL; 485131e6abcSNicholas Bellinger } 486c66ac9dbSNicholas Bellinger /* 487c66ac9dbSNicholas Bellinger * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 488c66ac9dbSNicholas Bellinger * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 489c66ac9dbSNicholas Bellinger * target_core_fabric_configfs.c WWN+TPG group context code. 490c66ac9dbSNicholas Bellinger */ 4916708bb27SAndy Grover if (!tfo->fabric_make_wwn) { 4926708bb27SAndy Grover pr_err("Missing tfo->fabric_make_wwn()\n"); 493c66ac9dbSNicholas Bellinger return -EINVAL; 494c66ac9dbSNicholas Bellinger } 4956708bb27SAndy Grover if (!tfo->fabric_drop_wwn) { 4966708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_wwn()\n"); 497c66ac9dbSNicholas Bellinger return -EINVAL; 498c66ac9dbSNicholas Bellinger } 4996708bb27SAndy Grover if (!tfo->fabric_make_tpg) { 5006708bb27SAndy Grover pr_err("Missing tfo->fabric_make_tpg()\n"); 501c66ac9dbSNicholas Bellinger return -EINVAL; 502c66ac9dbSNicholas Bellinger } 5036708bb27SAndy Grover if (!tfo->fabric_drop_tpg) { 5046708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_tpg()\n"); 505c66ac9dbSNicholas Bellinger return -EINVAL; 506c66ac9dbSNicholas Bellinger } 507c66ac9dbSNicholas Bellinger 508c66ac9dbSNicholas Bellinger return 0; 509c66ac9dbSNicholas Bellinger } 510c66ac9dbSNicholas Bellinger 511c66ac9dbSNicholas Bellinger /* 512c66ac9dbSNicholas Bellinger * Called 2nd from fabric module with returned parameter of 513c66ac9dbSNicholas Bellinger * struct target_fabric_configfs * from target_fabric_configfs_init(). 514c66ac9dbSNicholas Bellinger * 515c66ac9dbSNicholas Bellinger * Upon a successful registration, the new fabric's struct config_item is 516c66ac9dbSNicholas Bellinger * return. Also, a pointer to this struct is set in the passed 517c66ac9dbSNicholas Bellinger * struct target_fabric_configfs. 518c66ac9dbSNicholas Bellinger */ 519c66ac9dbSNicholas Bellinger int target_fabric_configfs_register( 520c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 521c66ac9dbSNicholas Bellinger { 522c66ac9dbSNicholas Bellinger int ret; 523c66ac9dbSNicholas Bellinger 5246708bb27SAndy Grover if (!tf) { 5256708bb27SAndy Grover pr_err("Unable to locate target_fabric_configfs" 526c66ac9dbSNicholas Bellinger " pointer\n"); 527c66ac9dbSNicholas Bellinger return -EINVAL; 528c66ac9dbSNicholas Bellinger } 5296708bb27SAndy Grover if (!tf->tf_subsys) { 5306708bb27SAndy Grover pr_err("Unable to target struct config_subsystem" 531c66ac9dbSNicholas Bellinger " pointer\n"); 532c66ac9dbSNicholas Bellinger return -EINVAL; 533c66ac9dbSNicholas Bellinger } 534c66ac9dbSNicholas Bellinger ret = target_fabric_tf_ops_check(tf); 535c66ac9dbSNicholas Bellinger if (ret < 0) 536c66ac9dbSNicholas Bellinger return ret; 537c66ac9dbSNicholas Bellinger 5386708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" 539c66ac9dbSNicholas Bellinger ">>>>>>>>>>\n"); 540c66ac9dbSNicholas Bellinger return 0; 541c66ac9dbSNicholas Bellinger } 542c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_register); 543c66ac9dbSNicholas Bellinger 544c66ac9dbSNicholas Bellinger void target_fabric_configfs_deregister( 545c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf) 546c66ac9dbSNicholas Bellinger { 547c66ac9dbSNicholas Bellinger struct configfs_subsystem *su; 548c66ac9dbSNicholas Bellinger 5496708bb27SAndy Grover if (!tf) { 5506708bb27SAndy Grover pr_err("Unable to locate passed target_fabric_" 551c66ac9dbSNicholas Bellinger "configfs\n"); 552c66ac9dbSNicholas Bellinger return; 553c66ac9dbSNicholas Bellinger } 554c66ac9dbSNicholas Bellinger su = tf->tf_subsys; 5556708bb27SAndy Grover if (!su) { 5566708bb27SAndy Grover pr_err("Unable to locate passed tf->tf_subsys" 557c66ac9dbSNicholas Bellinger " pointer\n"); 558c66ac9dbSNicholas Bellinger return; 559c66ac9dbSNicholas Bellinger } 5606708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" 561c66ac9dbSNicholas Bellinger ">>>>>>>>>>>>\n"); 562c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 563c66ac9dbSNicholas Bellinger if (atomic_read(&tf->tf_access_cnt)) { 564c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 5656708bb27SAndy Grover pr_err("Non zero tf->tf_access_cnt for fabric %s\n", 566c66ac9dbSNicholas Bellinger tf->tf_name); 567c66ac9dbSNicholas Bellinger BUG(); 568c66ac9dbSNicholas Bellinger } 569c66ac9dbSNicholas Bellinger list_del(&tf->tf_list); 570c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 571c66ac9dbSNicholas Bellinger 5726708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" 573c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 574c66ac9dbSNicholas Bellinger tf->tf_module = NULL; 575c66ac9dbSNicholas Bellinger tf->tf_subsys = NULL; 576c66ac9dbSNicholas Bellinger kfree(tf); 577c66ac9dbSNicholas Bellinger 5786708bb27SAndy Grover pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" 579c66ac9dbSNicholas Bellinger ">>>>>\n"); 580c66ac9dbSNicholas Bellinger } 581c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(target_fabric_configfs_deregister); 582c66ac9dbSNicholas Bellinger 583c66ac9dbSNicholas Bellinger /*############################################################################## 584c66ac9dbSNicholas Bellinger // Stop functions called by external Target Fabrics Modules 585c66ac9dbSNicholas Bellinger //############################################################################*/ 586c66ac9dbSNicholas Bellinger 587f79a897eSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_attrib_cit */ 588c66ac9dbSNicholas Bellinger 589c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); 590c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); 591c66ac9dbSNicholas Bellinger 592c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_attrib_ops = { 593c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_attrib_attr_show, 594c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_attrib_attr_store, 595c66ac9dbSNicholas Bellinger }; 596c66ac9dbSNicholas Bellinger 59743cf208cSNicholas Bellinger TB_CIT_SETUP(dev_attrib, &target_core_dev_attrib_ops, NULL, NULL); 598c66ac9dbSNicholas Bellinger 599f79a897eSNicholas Bellinger /* End functions for struct config_item_type tb_dev_attrib_cit */ 600c66ac9dbSNicholas Bellinger 601f8d389c6SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_wwn_cit */ 602c66ac9dbSNicholas Bellinger 603c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); 604c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR(_name, _mode) \ 605c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ 606c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 607c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name, \ 608c66ac9dbSNicholas Bellinger target_core_dev_wwn_store_attr_##_name); 609c66ac9dbSNicholas Bellinger 610c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR_RO(_name); \ 611c66ac9dbSNicholas Bellinger do { \ 612c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute \ 613c66ac9dbSNicholas Bellinger target_core_dev_wwn_##_name = \ 614c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 615c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name); \ 616c66ac9dbSNicholas Bellinger } while (0); 617c66ac9dbSNicholas Bellinger 618c66ac9dbSNicholas Bellinger /* 619c66ac9dbSNicholas Bellinger * VPD page 0x80 Unit serial 620c66ac9dbSNicholas Bellinger */ 621c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( 622c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 623c66ac9dbSNicholas Bellinger char *page) 624c66ac9dbSNicholas Bellinger { 625c66ac9dbSNicholas Bellinger return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 626c66ac9dbSNicholas Bellinger &t10_wwn->unit_serial[0]); 627c66ac9dbSNicholas Bellinger } 628c66ac9dbSNicholas Bellinger 629c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( 630c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 631c66ac9dbSNicholas Bellinger const char *page, 632c66ac9dbSNicholas Bellinger size_t count) 633c66ac9dbSNicholas Bellinger { 6340fd97ccfSChristoph Hellwig struct se_device *dev = t10_wwn->t10_dev; 635c66ac9dbSNicholas Bellinger unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; 636c66ac9dbSNicholas Bellinger 637c66ac9dbSNicholas Bellinger /* 638c66ac9dbSNicholas Bellinger * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 639c66ac9dbSNicholas Bellinger * from the struct scsi_device level firmware, do not allow 640c66ac9dbSNicholas Bellinger * VPD Unit Serial to be emulated. 641c66ac9dbSNicholas Bellinger * 642c66ac9dbSNicholas Bellinger * Note this struct scsi_device could also be emulating VPD 643c66ac9dbSNicholas Bellinger * information from its drivers/scsi LLD. But for now we assume 644c66ac9dbSNicholas Bellinger * it is doing 'the right thing' wrt a world wide unique 645c66ac9dbSNicholas Bellinger * VPD Unit Serial Number that OS dependent multipath can depend on. 646c66ac9dbSNicholas Bellinger */ 6470fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { 6486708bb27SAndy Grover pr_err("Underlying SCSI device firmware provided VPD" 649c66ac9dbSNicholas Bellinger " Unit Serial, ignoring request\n"); 650c66ac9dbSNicholas Bellinger return -EOPNOTSUPP; 651c66ac9dbSNicholas Bellinger } 652c66ac9dbSNicholas Bellinger 65360d645a4SDan Carpenter if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 6546708bb27SAndy Grover pr_err("Emulated VPD Unit Serial exceeds" 655c66ac9dbSNicholas Bellinger " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 656c66ac9dbSNicholas Bellinger return -EOVERFLOW; 657c66ac9dbSNicholas Bellinger } 658c66ac9dbSNicholas Bellinger /* 659c66ac9dbSNicholas Bellinger * Check to see if any active $FABRIC_MOD exports exist. If they 660c66ac9dbSNicholas Bellinger * do exist, fail here as changing this information on the fly 661c66ac9dbSNicholas Bellinger * (underneath the initiator side OS dependent multipath code) 662c66ac9dbSNicholas Bellinger * could cause negative effects. 663c66ac9dbSNicholas Bellinger */ 6640fd97ccfSChristoph Hellwig if (dev->export_count) { 6656708bb27SAndy Grover pr_err("Unable to set VPD Unit Serial while" 666c66ac9dbSNicholas Bellinger " active %d $FABRIC_MOD exports exist\n", 6670fd97ccfSChristoph Hellwig dev->export_count); 668c66ac9dbSNicholas Bellinger return -EINVAL; 669c66ac9dbSNicholas Bellinger } 6700fd97ccfSChristoph Hellwig 671c66ac9dbSNicholas Bellinger /* 672c66ac9dbSNicholas Bellinger * This currently assumes ASCII encoding for emulated VPD Unit Serial. 673c66ac9dbSNicholas Bellinger * 674c66ac9dbSNicholas Bellinger * Also, strip any newline added from the userspace 675c66ac9dbSNicholas Bellinger * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 676c66ac9dbSNicholas Bellinger */ 677c66ac9dbSNicholas Bellinger memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); 678c66ac9dbSNicholas Bellinger snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 6790fd97ccfSChristoph Hellwig snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 680c66ac9dbSNicholas Bellinger "%s", strstrip(buf)); 6810fd97ccfSChristoph Hellwig dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; 682c66ac9dbSNicholas Bellinger 6836708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 6840fd97ccfSChristoph Hellwig " %s\n", dev->t10_wwn.unit_serial); 685c66ac9dbSNicholas Bellinger 686c66ac9dbSNicholas Bellinger return count; 687c66ac9dbSNicholas Bellinger } 688c66ac9dbSNicholas Bellinger 689c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); 690c66ac9dbSNicholas Bellinger 691c66ac9dbSNicholas Bellinger /* 692c66ac9dbSNicholas Bellinger * VPD page 0x83 Protocol Identifier 693c66ac9dbSNicholas Bellinger */ 694c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( 695c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 696c66ac9dbSNicholas Bellinger char *page) 697c66ac9dbSNicholas Bellinger { 698c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; 699c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; 700c66ac9dbSNicholas Bellinger ssize_t len = 0; 701c66ac9dbSNicholas Bellinger 702c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); 703c66ac9dbSNicholas Bellinger 704c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); 705c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 7066708bb27SAndy Grover if (!vpd->protocol_identifier_set) 707c66ac9dbSNicholas Bellinger continue; 708c66ac9dbSNicholas Bellinger 709c66ac9dbSNicholas Bellinger transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 710c66ac9dbSNicholas Bellinger 7116708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 712c66ac9dbSNicholas Bellinger break; 713c66ac9dbSNicholas Bellinger 714c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 715c66ac9dbSNicholas Bellinger } 716c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); 717c66ac9dbSNicholas Bellinger 718c66ac9dbSNicholas Bellinger return len; 719c66ac9dbSNicholas Bellinger } 720c66ac9dbSNicholas Bellinger 721c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( 722c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 723c66ac9dbSNicholas Bellinger const char *page, 724c66ac9dbSNicholas Bellinger size_t count) 725c66ac9dbSNicholas Bellinger { 726c66ac9dbSNicholas Bellinger return -ENOSYS; 727c66ac9dbSNicholas Bellinger } 728c66ac9dbSNicholas Bellinger 729c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); 730c66ac9dbSNicholas Bellinger 731c66ac9dbSNicholas Bellinger /* 732c66ac9dbSNicholas Bellinger * Generic wrapper for dumping VPD identifiers by association. 733c66ac9dbSNicholas Bellinger */ 734c66ac9dbSNicholas Bellinger #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 735c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_##_name( \ 736c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, \ 737c66ac9dbSNicholas Bellinger char *page) \ 738c66ac9dbSNicholas Bellinger { \ 739c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; \ 740c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; \ 741c66ac9dbSNicholas Bellinger ssize_t len = 0; \ 742c66ac9dbSNicholas Bellinger \ 743c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); \ 744c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 745c66ac9dbSNicholas Bellinger if (vpd->association != _assoc) \ 746c66ac9dbSNicholas Bellinger continue; \ 747c66ac9dbSNicholas Bellinger \ 748c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 749c66ac9dbSNicholas Bellinger transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 7506708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 751c66ac9dbSNicholas Bellinger break; \ 752c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 753c66ac9dbSNicholas Bellinger \ 754c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 755c66ac9dbSNicholas Bellinger transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 7566708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 757c66ac9dbSNicholas Bellinger break; \ 758c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 759c66ac9dbSNicholas Bellinger \ 760c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 761c66ac9dbSNicholas Bellinger transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 7626708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 763c66ac9dbSNicholas Bellinger break; \ 764c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 765c66ac9dbSNicholas Bellinger } \ 766c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); \ 767c66ac9dbSNicholas Bellinger \ 768c66ac9dbSNicholas Bellinger return len; \ 769c66ac9dbSNicholas Bellinger } 770c66ac9dbSNicholas Bellinger 771c66ac9dbSNicholas Bellinger /* 772163cd5faSAndy Shevchenko * VPD page 0x83 Association: Logical Unit 773c66ac9dbSNicholas Bellinger */ 774c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 775c66ac9dbSNicholas Bellinger 776c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( 777c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 778c66ac9dbSNicholas Bellinger const char *page, 779c66ac9dbSNicholas Bellinger size_t count) 780c66ac9dbSNicholas Bellinger { 781c66ac9dbSNicholas Bellinger return -ENOSYS; 782c66ac9dbSNicholas Bellinger } 783c66ac9dbSNicholas Bellinger 784c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); 785c66ac9dbSNicholas Bellinger 786c66ac9dbSNicholas Bellinger /* 787c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: Target Port 788c66ac9dbSNicholas Bellinger */ 789c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 790c66ac9dbSNicholas Bellinger 791c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( 792c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 793c66ac9dbSNicholas Bellinger const char *page, 794c66ac9dbSNicholas Bellinger size_t count) 795c66ac9dbSNicholas Bellinger { 796c66ac9dbSNicholas Bellinger return -ENOSYS; 797c66ac9dbSNicholas Bellinger } 798c66ac9dbSNicholas Bellinger 799c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); 800c66ac9dbSNicholas Bellinger 801c66ac9dbSNicholas Bellinger /* 802c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: SCSI Target Device 803c66ac9dbSNicholas Bellinger */ 804c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 805c66ac9dbSNicholas Bellinger 806c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( 807c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 808c66ac9dbSNicholas Bellinger const char *page, 809c66ac9dbSNicholas Bellinger size_t count) 810c66ac9dbSNicholas Bellinger { 811c66ac9dbSNicholas Bellinger return -ENOSYS; 812c66ac9dbSNicholas Bellinger } 813c66ac9dbSNicholas Bellinger 814c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); 815c66ac9dbSNicholas Bellinger 816c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); 817c66ac9dbSNicholas Bellinger 818c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 819c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_unit_serial.attr, 820c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_protocol_identifier.attr, 821c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_logical_unit.attr, 822c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_target_port.attr, 823c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, 824c66ac9dbSNicholas Bellinger NULL, 825c66ac9dbSNicholas Bellinger }; 826c66ac9dbSNicholas Bellinger 827c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_wwn_ops = { 828c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_wwn_attr_show, 829c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_wwn_attr_store, 830c66ac9dbSNicholas Bellinger }; 831c66ac9dbSNicholas Bellinger 832f8d389c6SNicholas Bellinger TB_CIT_SETUP(dev_wwn, &target_core_dev_wwn_ops, NULL, target_core_dev_wwn_attrs); 833c66ac9dbSNicholas Bellinger 834f8d389c6SNicholas Bellinger /* End functions for struct config_item_type tb_dev_wwn_cit */ 835c66ac9dbSNicholas Bellinger 83691e2e39bSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_pr_cit */ 837c66ac9dbSNicholas Bellinger 8380fd97ccfSChristoph Hellwig CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); 839c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR(_name, _mode) \ 840c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 841c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 842c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name, \ 843c66ac9dbSNicholas Bellinger target_core_dev_pr_store_attr_##_name); 844c66ac9dbSNicholas Bellinger 845c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR_RO(_name); \ 846c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 847c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 848c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name); 849c66ac9dbSNicholas Bellinger 850d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, 851d977f437SChristoph Hellwig char *page) 852c66ac9dbSNicholas Bellinger { 853c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 854c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 855c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 856c66ac9dbSNicholas Bellinger 857c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 858c66ac9dbSNicholas Bellinger 859c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 860d977f437SChristoph Hellwig if (!pr_reg) 861d977f437SChristoph Hellwig return sprintf(page, "No SPC-3 Reservation holder\n"); 862d977f437SChristoph Hellwig 863c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 864d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); 865c66ac9dbSNicholas Bellinger 866d977f437SChristoph Hellwig return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", 867e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 868d2843c17SAndy Grover se_nacl->initiatorname, i_buf); 869c66ac9dbSNicholas Bellinger } 870c66ac9dbSNicholas Bellinger 871d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 872d977f437SChristoph Hellwig char *page) 873c66ac9dbSNicholas Bellinger { 874c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 875d977f437SChristoph Hellwig ssize_t len; 876c66ac9dbSNicholas Bellinger 877c66ac9dbSNicholas Bellinger se_nacl = dev->dev_reserved_node_acl; 878d977f437SChristoph Hellwig if (se_nacl) { 879d977f437SChristoph Hellwig len = sprintf(page, 880d977f437SChristoph Hellwig "SPC-2 Reservation: %s Initiator: %s\n", 881e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 882c66ac9dbSNicholas Bellinger se_nacl->initiatorname); 883d977f437SChristoph Hellwig } else { 884d977f437SChristoph Hellwig len = sprintf(page, "No SPC-2 Reservation holder\n"); 885d977f437SChristoph Hellwig } 886d977f437SChristoph Hellwig return len; 887c66ac9dbSNicholas Bellinger } 888c66ac9dbSNicholas Bellinger 8890fd97ccfSChristoph Hellwig static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, 890c66ac9dbSNicholas Bellinger char *page) 891c66ac9dbSNicholas Bellinger { 892d977f437SChristoph Hellwig int ret; 893c66ac9dbSNicholas Bellinger 894d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 895d977f437SChristoph Hellwig return sprintf(page, "Passthrough\n"); 896c66ac9dbSNicholas Bellinger 897d977f437SChristoph Hellwig spin_lock(&dev->dev_reservation_lock); 898d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 899d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc2_res(dev, page); 900d977f437SChristoph Hellwig else 901d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc3_res(dev, page); 902d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 903d977f437SChristoph Hellwig return ret; 904c66ac9dbSNicholas Bellinger } 905c66ac9dbSNicholas Bellinger 906c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_holder); 907c66ac9dbSNicholas Bellinger 908c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( 9090fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 910c66ac9dbSNicholas Bellinger { 911c66ac9dbSNicholas Bellinger ssize_t len = 0; 912c66ac9dbSNicholas Bellinger 913c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 914d977f437SChristoph Hellwig if (!dev->dev_pr_res_holder) { 915c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 916d977f437SChristoph Hellwig } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { 917c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: All Target" 918c66ac9dbSNicholas Bellinger " Ports registration\n"); 919d977f437SChristoph Hellwig } else { 920c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: Single" 921c66ac9dbSNicholas Bellinger " Target Port registration\n"); 922d977f437SChristoph Hellwig } 923c66ac9dbSNicholas Bellinger 924d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 925c66ac9dbSNicholas Bellinger return len; 926c66ac9dbSNicholas Bellinger } 927c66ac9dbSNicholas Bellinger 928c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); 929c66ac9dbSNicholas Bellinger 930c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_generation( 9310fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 932c66ac9dbSNicholas Bellinger { 9330fd97ccfSChristoph Hellwig return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); 934c66ac9dbSNicholas Bellinger } 935c66ac9dbSNicholas Bellinger 936c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_generation); 937c66ac9dbSNicholas Bellinger 938c66ac9dbSNicholas Bellinger /* 939c66ac9dbSNicholas Bellinger * res_pr_holder_tg_port 940c66ac9dbSNicholas Bellinger */ 941c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( 9420fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 943c66ac9dbSNicholas Bellinger { 944c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 945c66ac9dbSNicholas Bellinger struct se_lun *lun; 946c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg; 947c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 948c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo; 949c66ac9dbSNicholas Bellinger ssize_t len = 0; 950c66ac9dbSNicholas Bellinger 951c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 952c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 9536708bb27SAndy Grover if (!pr_reg) { 954c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 955d977f437SChristoph Hellwig goto out_unlock; 956c66ac9dbSNicholas Bellinger } 957d977f437SChristoph Hellwig 958c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 959c66ac9dbSNicholas Bellinger se_tpg = se_nacl->se_tpg; 960c66ac9dbSNicholas Bellinger lun = pr_reg->pr_reg_tg_pt_lun; 961e3d6f909SAndy Grover tfo = se_tpg->se_tpg_tfo; 962c66ac9dbSNicholas Bellinger 963c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: %s" 964c66ac9dbSNicholas Bellinger " Target Node Endpoint: %s\n", tfo->get_fabric_name(), 965c66ac9dbSNicholas Bellinger tfo->tpg_get_wwn(se_tpg)); 966c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 96735d1efe8SMasanari Iida " Identifier Tag: %hu %s Portal Group Tag: %hu" 968c66ac9dbSNicholas Bellinger " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, 969c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), 970c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), lun->unpacked_lun); 971c66ac9dbSNicholas Bellinger 972d977f437SChristoph Hellwig out_unlock: 973d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 974c66ac9dbSNicholas Bellinger return len; 975c66ac9dbSNicholas Bellinger } 976c66ac9dbSNicholas Bellinger 977c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); 978c66ac9dbSNicholas Bellinger 979c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( 9800fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 981c66ac9dbSNicholas Bellinger { 982c66ac9dbSNicholas Bellinger struct target_core_fabric_ops *tfo; 983c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 984c66ac9dbSNicholas Bellinger unsigned char buf[384]; 985c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 986c66ac9dbSNicholas Bellinger ssize_t len = 0; 987d2843c17SAndy Grover int reg_count = 0; 988c66ac9dbSNicholas Bellinger 989c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 990c66ac9dbSNicholas Bellinger 9910fd97ccfSChristoph Hellwig spin_lock(&dev->t10_pr.registration_lock); 9920fd97ccfSChristoph Hellwig list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, 993c66ac9dbSNicholas Bellinger pr_reg_list) { 994c66ac9dbSNicholas Bellinger 995c66ac9dbSNicholas Bellinger memset(buf, 0, 384); 996c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 997c66ac9dbSNicholas Bellinger tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 998d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, 999c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 1000c66ac9dbSNicholas Bellinger sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 1001c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), 1002d2843c17SAndy Grover pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, 1003c66ac9dbSNicholas Bellinger pr_reg->pr_res_generation); 1004c66ac9dbSNicholas Bellinger 10056708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1006c66ac9dbSNicholas Bellinger break; 1007c66ac9dbSNicholas Bellinger 1008c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1009c66ac9dbSNicholas Bellinger reg_count++; 1010c66ac9dbSNicholas Bellinger } 10110fd97ccfSChristoph Hellwig spin_unlock(&dev->t10_pr.registration_lock); 1012c66ac9dbSNicholas Bellinger 10136708bb27SAndy Grover if (!reg_count) 1014c66ac9dbSNicholas Bellinger len += sprintf(page+len, "None\n"); 1015c66ac9dbSNicholas Bellinger 1016c66ac9dbSNicholas Bellinger return len; 1017c66ac9dbSNicholas Bellinger } 1018c66ac9dbSNicholas Bellinger 1019c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); 1020c66ac9dbSNicholas Bellinger 1021c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_type( 10220fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1023c66ac9dbSNicholas Bellinger { 1024c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1025c66ac9dbSNicholas Bellinger ssize_t len = 0; 1026c66ac9dbSNicholas Bellinger 1027c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1028c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1029d977f437SChristoph Hellwig if (pr_reg) { 1030c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1031c66ac9dbSNicholas Bellinger core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1032d977f437SChristoph Hellwig } else { 1033d977f437SChristoph Hellwig len = sprintf(page, "No SPC-3 Reservation holder\n"); 1034d977f437SChristoph Hellwig } 1035c66ac9dbSNicholas Bellinger 1036d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1037c66ac9dbSNicholas Bellinger return len; 1038c66ac9dbSNicholas Bellinger } 1039c66ac9dbSNicholas Bellinger 1040c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_type); 1041c66ac9dbSNicholas Bellinger 1042c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_type( 10430fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1044c66ac9dbSNicholas Bellinger { 1045d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1046d977f437SChristoph Hellwig return sprintf(page, "SPC_PASSTHROUGH\n"); 1047d977f437SChristoph Hellwig else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1048d977f437SChristoph Hellwig return sprintf(page, "SPC2_RESERVATIONS\n"); 1049d977f437SChristoph Hellwig else 1050d977f437SChristoph Hellwig return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1051c66ac9dbSNicholas Bellinger } 1052c66ac9dbSNicholas Bellinger 1053c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_type); 1054c66ac9dbSNicholas Bellinger 1055c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( 10560fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1057c66ac9dbSNicholas Bellinger { 1058d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1059c66ac9dbSNicholas Bellinger return 0; 1060c66ac9dbSNicholas Bellinger 1061c66ac9dbSNicholas Bellinger return sprintf(page, "APTPL Bit Status: %s\n", 10620fd97ccfSChristoph Hellwig (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1063c66ac9dbSNicholas Bellinger } 1064c66ac9dbSNicholas Bellinger 1065c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_aptpl_active); 1066c66ac9dbSNicholas Bellinger 1067c66ac9dbSNicholas Bellinger /* 1068c66ac9dbSNicholas Bellinger * res_aptpl_metadata 1069c66ac9dbSNicholas Bellinger */ 1070c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( 10710fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 1072c66ac9dbSNicholas Bellinger { 1073d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1074c66ac9dbSNicholas Bellinger return 0; 1075c66ac9dbSNicholas Bellinger 1076c66ac9dbSNicholas Bellinger return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1077c66ac9dbSNicholas Bellinger } 1078c66ac9dbSNicholas Bellinger 1079c66ac9dbSNicholas Bellinger enum { 1080c66ac9dbSNicholas Bellinger Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1081c66ac9dbSNicholas Bellinger Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1082c66ac9dbSNicholas Bellinger Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1083c66ac9dbSNicholas Bellinger Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1084c66ac9dbSNicholas Bellinger }; 1085c66ac9dbSNicholas Bellinger 1086c66ac9dbSNicholas Bellinger static match_table_t tokens = { 1087c66ac9dbSNicholas Bellinger {Opt_initiator_fabric, "initiator_fabric=%s"}, 1088c66ac9dbSNicholas Bellinger {Opt_initiator_node, "initiator_node=%s"}, 1089c66ac9dbSNicholas Bellinger {Opt_initiator_sid, "initiator_sid=%s"}, 1090c66ac9dbSNicholas Bellinger {Opt_sa_res_key, "sa_res_key=%s"}, 1091c66ac9dbSNicholas Bellinger {Opt_res_holder, "res_holder=%d"}, 1092c66ac9dbSNicholas Bellinger {Opt_res_type, "res_type=%d"}, 1093c66ac9dbSNicholas Bellinger {Opt_res_scope, "res_scope=%d"}, 1094c66ac9dbSNicholas Bellinger {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1095c66ac9dbSNicholas Bellinger {Opt_mapped_lun, "mapped_lun=%d"}, 1096c66ac9dbSNicholas Bellinger {Opt_target_fabric, "target_fabric=%s"}, 1097c66ac9dbSNicholas Bellinger {Opt_target_node, "target_node=%s"}, 1098c66ac9dbSNicholas Bellinger {Opt_tpgt, "tpgt=%d"}, 1099c66ac9dbSNicholas Bellinger {Opt_port_rtpi, "port_rtpi=%d"}, 1100c66ac9dbSNicholas Bellinger {Opt_target_lun, "target_lun=%d"}, 1101c66ac9dbSNicholas Bellinger {Opt_err, NULL} 1102c66ac9dbSNicholas Bellinger }; 1103c66ac9dbSNicholas Bellinger 1104c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( 11050fd97ccfSChristoph Hellwig struct se_device *dev, 1106c66ac9dbSNicholas Bellinger const char *page, 1107c66ac9dbSNicholas Bellinger size_t count) 1108c66ac9dbSNicholas Bellinger { 11096d180253SJesper Juhl unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 11106d180253SJesper Juhl unsigned char *t_fabric = NULL, *t_port = NULL; 11118d213559SJoern Engel char *orig, *ptr, *opts; 1112c66ac9dbSNicholas Bellinger substring_t args[MAX_OPT_ARGS]; 1113c66ac9dbSNicholas Bellinger unsigned long long tmp_ll; 1114c66ac9dbSNicholas Bellinger u64 sa_res_key = 0; 1115c66ac9dbSNicholas Bellinger u32 mapped_lun = 0, target_lun = 0; 1116c66ac9dbSNicholas Bellinger int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 1117c66ac9dbSNicholas Bellinger u16 port_rpti = 0, tpgt = 0; 1118c66ac9dbSNicholas Bellinger u8 type = 0, scope; 1119c66ac9dbSNicholas Bellinger 1120d977f437SChristoph Hellwig if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1121d977f437SChristoph Hellwig return 0; 1122d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1123c66ac9dbSNicholas Bellinger return 0; 1124c66ac9dbSNicholas Bellinger 11250fd97ccfSChristoph Hellwig if (dev->export_count) { 11266708bb27SAndy Grover pr_debug("Unable to process APTPL metadata while" 1127c66ac9dbSNicholas Bellinger " active fabric exports exist\n"); 1128c66ac9dbSNicholas Bellinger return -EINVAL; 1129c66ac9dbSNicholas Bellinger } 1130c66ac9dbSNicholas Bellinger 1131c66ac9dbSNicholas Bellinger opts = kstrdup(page, GFP_KERNEL); 1132c66ac9dbSNicholas Bellinger if (!opts) 1133c66ac9dbSNicholas Bellinger return -ENOMEM; 1134c66ac9dbSNicholas Bellinger 1135c66ac9dbSNicholas Bellinger orig = opts; 113690c161b6SSebastian Andrzej Siewior while ((ptr = strsep(&opts, ",\n")) != NULL) { 1137c66ac9dbSNicholas Bellinger if (!*ptr) 1138c66ac9dbSNicholas Bellinger continue; 1139c66ac9dbSNicholas Bellinger 1140c66ac9dbSNicholas Bellinger token = match_token(ptr, tokens, args); 1141c66ac9dbSNicholas Bellinger switch (token) { 1142c66ac9dbSNicholas Bellinger case Opt_initiator_fabric: 11438d213559SJoern Engel i_fabric = match_strdup(args); 11446d180253SJesper Juhl if (!i_fabric) { 11456d180253SJesper Juhl ret = -ENOMEM; 11466d180253SJesper Juhl goto out; 11476d180253SJesper Juhl } 1148c66ac9dbSNicholas Bellinger break; 1149c66ac9dbSNicholas Bellinger case Opt_initiator_node: 11508d213559SJoern Engel i_port = match_strdup(args); 11516d180253SJesper Juhl if (!i_port) { 11526d180253SJesper Juhl ret = -ENOMEM; 11536d180253SJesper Juhl goto out; 11546d180253SJesper Juhl } 115560d645a4SDan Carpenter if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 11566708bb27SAndy Grover pr_err("APTPL metadata initiator_node=" 1157c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 1158c66ac9dbSNicholas Bellinger PR_APTPL_MAX_IPORT_LEN); 1159c66ac9dbSNicholas Bellinger ret = -EINVAL; 1160c66ac9dbSNicholas Bellinger break; 1161c66ac9dbSNicholas Bellinger } 1162c66ac9dbSNicholas Bellinger break; 1163c66ac9dbSNicholas Bellinger case Opt_initiator_sid: 11648d213559SJoern Engel isid = match_strdup(args); 11656d180253SJesper Juhl if (!isid) { 11666d180253SJesper Juhl ret = -ENOMEM; 11676d180253SJesper Juhl goto out; 11686d180253SJesper Juhl } 116960d645a4SDan Carpenter if (strlen(isid) >= PR_REG_ISID_LEN) { 11706708bb27SAndy Grover pr_err("APTPL metadata initiator_isid" 1171c66ac9dbSNicholas Bellinger "= exceeds PR_REG_ISID_LEN: %d\n", 1172c66ac9dbSNicholas Bellinger PR_REG_ISID_LEN); 1173c66ac9dbSNicholas Bellinger ret = -EINVAL; 1174c66ac9dbSNicholas Bellinger break; 1175c66ac9dbSNicholas Bellinger } 1176c66ac9dbSNicholas Bellinger break; 1177c66ac9dbSNicholas Bellinger case Opt_sa_res_key: 11788d213559SJoern Engel ret = kstrtoull(args->from, 0, &tmp_ll); 1179c66ac9dbSNicholas Bellinger if (ret < 0) { 11808d213559SJoern Engel pr_err("kstrtoull() failed for sa_res_key=\n"); 1181c66ac9dbSNicholas Bellinger goto out; 1182c66ac9dbSNicholas Bellinger } 1183c66ac9dbSNicholas Bellinger sa_res_key = (u64)tmp_ll; 1184c66ac9dbSNicholas Bellinger break; 1185c66ac9dbSNicholas Bellinger /* 1186c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Reservation 1187c66ac9dbSNicholas Bellinger */ 1188c66ac9dbSNicholas Bellinger case Opt_res_holder: 1189c66ac9dbSNicholas Bellinger match_int(args, &arg); 1190c66ac9dbSNicholas Bellinger res_holder = arg; 1191c66ac9dbSNicholas Bellinger break; 1192c66ac9dbSNicholas Bellinger case Opt_res_type: 1193c66ac9dbSNicholas Bellinger match_int(args, &arg); 1194c66ac9dbSNicholas Bellinger type = (u8)arg; 1195c66ac9dbSNicholas Bellinger break; 1196c66ac9dbSNicholas Bellinger case Opt_res_scope: 1197c66ac9dbSNicholas Bellinger match_int(args, &arg); 1198c66ac9dbSNicholas Bellinger scope = (u8)arg; 1199c66ac9dbSNicholas Bellinger break; 1200c66ac9dbSNicholas Bellinger case Opt_res_all_tg_pt: 1201c66ac9dbSNicholas Bellinger match_int(args, &arg); 1202c66ac9dbSNicholas Bellinger all_tg_pt = (int)arg; 1203c66ac9dbSNicholas Bellinger break; 1204c66ac9dbSNicholas Bellinger case Opt_mapped_lun: 1205c66ac9dbSNicholas Bellinger match_int(args, &arg); 1206c66ac9dbSNicholas Bellinger mapped_lun = (u32)arg; 1207c66ac9dbSNicholas Bellinger break; 1208c66ac9dbSNicholas Bellinger /* 1209c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Target Port 1210c66ac9dbSNicholas Bellinger */ 1211c66ac9dbSNicholas Bellinger case Opt_target_fabric: 12128d213559SJoern Engel t_fabric = match_strdup(args); 12136d180253SJesper Juhl if (!t_fabric) { 12146d180253SJesper Juhl ret = -ENOMEM; 12156d180253SJesper Juhl goto out; 12166d180253SJesper Juhl } 1217c66ac9dbSNicholas Bellinger break; 1218c66ac9dbSNicholas Bellinger case Opt_target_node: 12198d213559SJoern Engel t_port = match_strdup(args); 12206d180253SJesper Juhl if (!t_port) { 12216d180253SJesper Juhl ret = -ENOMEM; 12226d180253SJesper Juhl goto out; 12236d180253SJesper Juhl } 122460d645a4SDan Carpenter if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 12256708bb27SAndy Grover pr_err("APTPL metadata target_node=" 1226c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 1227c66ac9dbSNicholas Bellinger PR_APTPL_MAX_TPORT_LEN); 1228c66ac9dbSNicholas Bellinger ret = -EINVAL; 1229c66ac9dbSNicholas Bellinger break; 1230c66ac9dbSNicholas Bellinger } 1231c66ac9dbSNicholas Bellinger break; 1232c66ac9dbSNicholas Bellinger case Opt_tpgt: 1233c66ac9dbSNicholas Bellinger match_int(args, &arg); 1234c66ac9dbSNicholas Bellinger tpgt = (u16)arg; 1235c66ac9dbSNicholas Bellinger break; 1236c66ac9dbSNicholas Bellinger case Opt_port_rtpi: 1237c66ac9dbSNicholas Bellinger match_int(args, &arg); 1238c66ac9dbSNicholas Bellinger port_rpti = (u16)arg; 1239c66ac9dbSNicholas Bellinger break; 1240c66ac9dbSNicholas Bellinger case Opt_target_lun: 1241c66ac9dbSNicholas Bellinger match_int(args, &arg); 1242c66ac9dbSNicholas Bellinger target_lun = (u32)arg; 1243c66ac9dbSNicholas Bellinger break; 1244c66ac9dbSNicholas Bellinger default: 1245c66ac9dbSNicholas Bellinger break; 1246c66ac9dbSNicholas Bellinger } 1247c66ac9dbSNicholas Bellinger } 1248c66ac9dbSNicholas Bellinger 12496708bb27SAndy Grover if (!i_port || !t_port || !sa_res_key) { 12506708bb27SAndy Grover pr_err("Illegal parameters for APTPL registration\n"); 1251c66ac9dbSNicholas Bellinger ret = -EINVAL; 1252c66ac9dbSNicholas Bellinger goto out; 1253c66ac9dbSNicholas Bellinger } 1254c66ac9dbSNicholas Bellinger 1255c66ac9dbSNicholas Bellinger if (res_holder && !(type)) { 12566708bb27SAndy Grover pr_err("Illegal PR type: 0x%02x for reservation" 1257c66ac9dbSNicholas Bellinger " holder\n", type); 1258c66ac9dbSNicholas Bellinger ret = -EINVAL; 1259c66ac9dbSNicholas Bellinger goto out; 1260c66ac9dbSNicholas Bellinger } 1261c66ac9dbSNicholas Bellinger 12620fd97ccfSChristoph Hellwig ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, 1263c66ac9dbSNicholas Bellinger i_port, isid, mapped_lun, t_port, tpgt, target_lun, 1264c66ac9dbSNicholas Bellinger res_holder, all_tg_pt, type); 1265c66ac9dbSNicholas Bellinger out: 12666d180253SJesper Juhl kfree(i_fabric); 12676d180253SJesper Juhl kfree(i_port); 12686d180253SJesper Juhl kfree(isid); 12696d180253SJesper Juhl kfree(t_fabric); 12706d180253SJesper Juhl kfree(t_port); 1271c66ac9dbSNicholas Bellinger kfree(orig); 1272c66ac9dbSNicholas Bellinger return (ret == 0) ? count : ret; 1273c66ac9dbSNicholas Bellinger } 1274c66ac9dbSNicholas Bellinger 1275c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); 1276c66ac9dbSNicholas Bellinger 12770fd97ccfSChristoph Hellwig CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); 1278c66ac9dbSNicholas Bellinger 1279c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_pr_attrs[] = { 1280c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_holder.attr, 1281c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_all_tgt_pts.attr, 1282c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_generation.attr, 1283c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_holder_tg_port.attr, 1284c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_registered_i_pts.attr, 1285c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_type.attr, 1286c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_type.attr, 1287c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_active.attr, 1288c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_metadata.attr, 1289c66ac9dbSNicholas Bellinger NULL, 1290c66ac9dbSNicholas Bellinger }; 1291c66ac9dbSNicholas Bellinger 1292c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_pr_ops = { 1293c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_pr_attr_show, 1294c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_pr_attr_store, 1295c66ac9dbSNicholas Bellinger }; 1296c66ac9dbSNicholas Bellinger 129791e2e39bSNicholas Bellinger TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs); 1298c66ac9dbSNicholas Bellinger 129991e2e39bSNicholas Bellinger /* End functions for struct config_item_type tb_dev_pr_cit */ 1300c66ac9dbSNicholas Bellinger 130173112edcSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_cit */ 1302c66ac9dbSNicholas Bellinger 1303c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_info(void *p, char *page) 1304c66ac9dbSNicholas Bellinger { 13050fd97ccfSChristoph Hellwig struct se_device *dev = p; 13060fd97ccfSChristoph Hellwig struct se_subsystem_api *t = dev->transport; 1307c66ac9dbSNicholas Bellinger int bl = 0; 1308c66ac9dbSNicholas Bellinger ssize_t read_bytes = 0; 1309c66ac9dbSNicholas Bellinger 13100fd97ccfSChristoph Hellwig transport_dump_dev_state(dev, page, &bl); 1311c66ac9dbSNicholas Bellinger read_bytes += bl; 13120fd97ccfSChristoph Hellwig read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); 1313c66ac9dbSNicholas Bellinger return read_bytes; 1314c66ac9dbSNicholas Bellinger } 1315c66ac9dbSNicholas Bellinger 1316c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_info = { 1317c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1318c66ac9dbSNicholas Bellinger .ca_name = "info", 1319c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO }, 1320c66ac9dbSNicholas Bellinger .show = target_core_show_dev_info, 1321c66ac9dbSNicholas Bellinger .store = NULL, 1322c66ac9dbSNicholas Bellinger }; 1323c66ac9dbSNicholas Bellinger 1324c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_control( 1325c66ac9dbSNicholas Bellinger void *p, 1326c66ac9dbSNicholas Bellinger const char *page, 1327c66ac9dbSNicholas Bellinger size_t count) 1328c66ac9dbSNicholas Bellinger { 13290fd97ccfSChristoph Hellwig struct se_device *dev = p; 13300fd97ccfSChristoph Hellwig struct se_subsystem_api *t = dev->transport; 1331c66ac9dbSNicholas Bellinger 13320fd97ccfSChristoph Hellwig return t->set_configfs_dev_params(dev, page, count); 1333c66ac9dbSNicholas Bellinger } 1334c66ac9dbSNicholas Bellinger 1335c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_control = { 1336c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1337c66ac9dbSNicholas Bellinger .ca_name = "control", 1338c66ac9dbSNicholas Bellinger .ca_mode = S_IWUSR }, 1339c66ac9dbSNicholas Bellinger .show = NULL, 1340c66ac9dbSNicholas Bellinger .store = target_core_store_dev_control, 1341c66ac9dbSNicholas Bellinger }; 1342c66ac9dbSNicholas Bellinger 1343c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_alias(void *p, char *page) 1344c66ac9dbSNicholas Bellinger { 13450fd97ccfSChristoph Hellwig struct se_device *dev = p; 1346c66ac9dbSNicholas Bellinger 13470fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_ALIAS)) 1348c66ac9dbSNicholas Bellinger return 0; 1349c66ac9dbSNicholas Bellinger 13500fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); 1351c66ac9dbSNicholas Bellinger } 1352c66ac9dbSNicholas Bellinger 1353c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_alias( 1354c66ac9dbSNicholas Bellinger void *p, 1355c66ac9dbSNicholas Bellinger const char *page, 1356c66ac9dbSNicholas Bellinger size_t count) 1357c66ac9dbSNicholas Bellinger { 13580fd97ccfSChristoph Hellwig struct se_device *dev = p; 13590fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1360c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1361c66ac9dbSNicholas Bellinger 1362c66ac9dbSNicholas Bellinger if (count > (SE_DEV_ALIAS_LEN-1)) { 13636708bb27SAndy Grover pr_err("alias count: %d exceeds" 1364c66ac9dbSNicholas Bellinger " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 1365c66ac9dbSNicholas Bellinger SE_DEV_ALIAS_LEN-1); 1366c66ac9dbSNicholas Bellinger return -EINVAL; 1367c66ac9dbSNicholas Bellinger } 1368c66ac9dbSNicholas Bellinger 13690fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); 13703011684cSDan Carpenter if (!read_bytes) 13713011684cSDan Carpenter return -EINVAL; 13720fd97ccfSChristoph Hellwig if (dev->dev_alias[read_bytes - 1] == '\n') 13730fd97ccfSChristoph Hellwig dev->dev_alias[read_bytes - 1] = '\0'; 13740877eafdSSebastian Andrzej Siewior 13750fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_ALIAS; 13763011684cSDan Carpenter 13776708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 1378c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 13790fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 13800fd97ccfSChristoph Hellwig dev->dev_alias); 1381c66ac9dbSNicholas Bellinger 1382c66ac9dbSNicholas Bellinger return read_bytes; 1383c66ac9dbSNicholas Bellinger } 1384c66ac9dbSNicholas Bellinger 1385c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alias = { 1386c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1387c66ac9dbSNicholas Bellinger .ca_name = "alias", 1388c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1389c66ac9dbSNicholas Bellinger .show = target_core_show_dev_alias, 1390c66ac9dbSNicholas Bellinger .store = target_core_store_dev_alias, 1391c66ac9dbSNicholas Bellinger }; 1392c66ac9dbSNicholas Bellinger 1393c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_udev_path(void *p, char *page) 1394c66ac9dbSNicholas Bellinger { 13950fd97ccfSChristoph Hellwig struct se_device *dev = p; 1396c66ac9dbSNicholas Bellinger 13970fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_UDEV_PATH)) 1398c66ac9dbSNicholas Bellinger return 0; 1399c66ac9dbSNicholas Bellinger 14000fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); 1401c66ac9dbSNicholas Bellinger } 1402c66ac9dbSNicholas Bellinger 1403c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_udev_path( 1404c66ac9dbSNicholas Bellinger void *p, 1405c66ac9dbSNicholas Bellinger const char *page, 1406c66ac9dbSNicholas Bellinger size_t count) 1407c66ac9dbSNicholas Bellinger { 14080fd97ccfSChristoph Hellwig struct se_device *dev = p; 14090fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1410c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1411c66ac9dbSNicholas Bellinger 1412c66ac9dbSNicholas Bellinger if (count > (SE_UDEV_PATH_LEN-1)) { 14136708bb27SAndy Grover pr_err("udev_path count: %d exceeds" 1414c66ac9dbSNicholas Bellinger " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 1415c66ac9dbSNicholas Bellinger SE_UDEV_PATH_LEN-1); 1416c66ac9dbSNicholas Bellinger return -EINVAL; 1417c66ac9dbSNicholas Bellinger } 1418c66ac9dbSNicholas Bellinger 14190fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, 1420c66ac9dbSNicholas Bellinger "%s", page); 14213011684cSDan Carpenter if (!read_bytes) 14223011684cSDan Carpenter return -EINVAL; 14230fd97ccfSChristoph Hellwig if (dev->udev_path[read_bytes - 1] == '\n') 14240fd97ccfSChristoph Hellwig dev->udev_path[read_bytes - 1] = '\0'; 14250877eafdSSebastian Andrzej Siewior 14260fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_UDEV_PATH; 14273011684cSDan Carpenter 14286708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 1429c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 14300fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 14310fd97ccfSChristoph Hellwig dev->udev_path); 1432c66ac9dbSNicholas Bellinger 1433c66ac9dbSNicholas Bellinger return read_bytes; 1434c66ac9dbSNicholas Bellinger } 1435c66ac9dbSNicholas Bellinger 1436c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { 1437c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1438c66ac9dbSNicholas Bellinger .ca_name = "udev_path", 1439c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1440c66ac9dbSNicholas Bellinger .show = target_core_show_dev_udev_path, 1441c66ac9dbSNicholas Bellinger .store = target_core_store_dev_udev_path, 1442c66ac9dbSNicholas Bellinger }; 1443c66ac9dbSNicholas Bellinger 144464146db7SAndy Grover static ssize_t target_core_show_dev_enable(void *p, char *page) 144564146db7SAndy Grover { 144664146db7SAndy Grover struct se_device *dev = p; 144764146db7SAndy Grover 144864146db7SAndy Grover return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); 144964146db7SAndy Grover } 145064146db7SAndy Grover 1451c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_enable( 1452c66ac9dbSNicholas Bellinger void *p, 1453c66ac9dbSNicholas Bellinger const char *page, 1454c66ac9dbSNicholas Bellinger size_t count) 1455c66ac9dbSNicholas Bellinger { 14560fd97ccfSChristoph Hellwig struct se_device *dev = p; 1457c66ac9dbSNicholas Bellinger char *ptr; 14580fd97ccfSChristoph Hellwig int ret; 1459c66ac9dbSNicholas Bellinger 1460c66ac9dbSNicholas Bellinger ptr = strstr(page, "1"); 14616708bb27SAndy Grover if (!ptr) { 14626708bb27SAndy Grover pr_err("For dev_enable ops, only valid value" 1463c66ac9dbSNicholas Bellinger " is \"1\"\n"); 1464c66ac9dbSNicholas Bellinger return -EINVAL; 1465c66ac9dbSNicholas Bellinger } 1466c66ac9dbSNicholas Bellinger 14670fd97ccfSChristoph Hellwig ret = target_configure_device(dev); 14680fd97ccfSChristoph Hellwig if (ret) 14690fd97ccfSChristoph Hellwig return ret; 1470c66ac9dbSNicholas Bellinger return count; 1471c66ac9dbSNicholas Bellinger } 1472c66ac9dbSNicholas Bellinger 1473c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_enable = { 1474c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1475c66ac9dbSNicholas Bellinger .ca_name = "enable", 147664146db7SAndy Grover .ca_mode = S_IRUGO | S_IWUSR }, 147764146db7SAndy Grover .show = target_core_show_dev_enable, 1478c66ac9dbSNicholas Bellinger .store = target_core_store_dev_enable, 1479c66ac9dbSNicholas Bellinger }; 1480c66ac9dbSNicholas Bellinger 1481c66ac9dbSNicholas Bellinger static ssize_t target_core_show_alua_lu_gp(void *p, char *page) 1482c66ac9dbSNicholas Bellinger { 14830fd97ccfSChristoph Hellwig struct se_device *dev = p; 1484c66ac9dbSNicholas Bellinger struct config_item *lu_ci; 1485c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 1486c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1487c66ac9dbSNicholas Bellinger ssize_t len = 0; 1488c66ac9dbSNicholas Bellinger 1489c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 1490c87fbd56SChristoph Hellwig if (!lu_gp_mem) 1491c87fbd56SChristoph Hellwig return 0; 1492c66ac9dbSNicholas Bellinger 1493c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1494c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 14956708bb27SAndy Grover if (lu_gp) { 1496c66ac9dbSNicholas Bellinger lu_ci = &lu_gp->lu_gp_group.cg_item; 1497c66ac9dbSNicholas Bellinger len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 1498c66ac9dbSNicholas Bellinger config_item_name(lu_ci), lu_gp->lu_gp_id); 1499c66ac9dbSNicholas Bellinger } 1500c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1501c66ac9dbSNicholas Bellinger 1502c66ac9dbSNicholas Bellinger return len; 1503c66ac9dbSNicholas Bellinger } 1504c66ac9dbSNicholas Bellinger 1505c66ac9dbSNicholas Bellinger static ssize_t target_core_store_alua_lu_gp( 1506c66ac9dbSNicholas Bellinger void *p, 1507c66ac9dbSNicholas Bellinger const char *page, 1508c66ac9dbSNicholas Bellinger size_t count) 1509c66ac9dbSNicholas Bellinger { 15100fd97ccfSChristoph Hellwig struct se_device *dev = p; 15110fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1512c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 1513c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1514c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 1515c66ac9dbSNicholas Bellinger int move = 0; 1516c66ac9dbSNicholas Bellinger 1517c87fbd56SChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 1518c87fbd56SChristoph Hellwig if (!lu_gp_mem) 1519c87fbd56SChristoph Hellwig return 0; 1520c87fbd56SChristoph Hellwig 1521c66ac9dbSNicholas Bellinger if (count > LU_GROUP_NAME_BUF) { 15226708bb27SAndy Grover pr_err("ALUA LU Group Alias too large!\n"); 1523c66ac9dbSNicholas Bellinger return -EINVAL; 1524c66ac9dbSNicholas Bellinger } 1525c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 1526c66ac9dbSNicholas Bellinger memcpy(buf, page, count); 1527c66ac9dbSNicholas Bellinger /* 1528c66ac9dbSNicholas Bellinger * Any ALUA logical unit alias besides "NULL" means we will be 1529c66ac9dbSNicholas Bellinger * making a new group association. 1530c66ac9dbSNicholas Bellinger */ 1531c66ac9dbSNicholas Bellinger if (strcmp(strstrip(buf), "NULL")) { 1532c66ac9dbSNicholas Bellinger /* 1533c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name() will increment reference to 1534c66ac9dbSNicholas Bellinger * struct t10_alua_lu_gp. This reference is released with 1535c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name below(). 1536c66ac9dbSNicholas Bellinger */ 1537c66ac9dbSNicholas Bellinger lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 15386708bb27SAndy Grover if (!lu_gp_new) 1539c66ac9dbSNicholas Bellinger return -ENODEV; 1540c66ac9dbSNicholas Bellinger } 1541c66ac9dbSNicholas Bellinger 1542c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1543c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 15446708bb27SAndy Grover if (lu_gp) { 1545c66ac9dbSNicholas Bellinger /* 1546c66ac9dbSNicholas Bellinger * Clearing an existing lu_gp association, and replacing 1547c66ac9dbSNicholas Bellinger * with NULL 1548c66ac9dbSNicholas Bellinger */ 15496708bb27SAndy Grover if (!lu_gp_new) { 15506708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 1551c66ac9dbSNicholas Bellinger " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 1552c66ac9dbSNicholas Bellinger " %hu\n", 1553c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 15540fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 1555c66ac9dbSNicholas Bellinger config_item_name(&lu_gp->lu_gp_group.cg_item), 1556c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 1557c66ac9dbSNicholas Bellinger 1558c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1559c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1560c66ac9dbSNicholas Bellinger 1561c66ac9dbSNicholas Bellinger return count; 1562c66ac9dbSNicholas Bellinger } 1563c66ac9dbSNicholas Bellinger /* 1564c66ac9dbSNicholas Bellinger * Removing existing association of lu_gp_mem with lu_gp 1565c66ac9dbSNicholas Bellinger */ 1566c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1567c66ac9dbSNicholas Bellinger move = 1; 1568c66ac9dbSNicholas Bellinger } 1569c66ac9dbSNicholas Bellinger /* 1570c66ac9dbSNicholas Bellinger * Associate lu_gp_mem with lu_gp_new. 1571c66ac9dbSNicholas Bellinger */ 1572c66ac9dbSNicholas Bellinger __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 1573c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1574c66ac9dbSNicholas Bellinger 15756708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 1576c66ac9dbSNicholas Bellinger " core/alua/lu_gps/%s, ID: %hu\n", 1577c66ac9dbSNicholas Bellinger (move) ? "Moving" : "Adding", 1578c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 15790fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 1580c66ac9dbSNicholas Bellinger config_item_name(&lu_gp_new->lu_gp_group.cg_item), 1581c66ac9dbSNicholas Bellinger lu_gp_new->lu_gp_id); 1582c66ac9dbSNicholas Bellinger 1583c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 1584c66ac9dbSNicholas Bellinger return count; 1585c66ac9dbSNicholas Bellinger } 1586c66ac9dbSNicholas Bellinger 1587c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { 1588c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1589c66ac9dbSNicholas Bellinger .ca_name = "alua_lu_gp", 1590c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1591c66ac9dbSNicholas Bellinger .show = target_core_show_alua_lu_gp, 1592c66ac9dbSNicholas Bellinger .store = target_core_store_alua_lu_gp, 1593c66ac9dbSNicholas Bellinger }; 1594c66ac9dbSNicholas Bellinger 1595229d4f11SHannes Reinecke static ssize_t target_core_show_dev_lba_map(void *p, char *page) 1596229d4f11SHannes Reinecke { 1597229d4f11SHannes Reinecke struct se_device *dev = p; 1598229d4f11SHannes Reinecke struct t10_alua_lba_map *map; 1599229d4f11SHannes Reinecke struct t10_alua_lba_map_member *mem; 1600229d4f11SHannes Reinecke char *b = page; 1601229d4f11SHannes Reinecke int bl = 0; 1602229d4f11SHannes Reinecke char state; 1603229d4f11SHannes Reinecke 1604229d4f11SHannes Reinecke spin_lock(&dev->t10_alua.lba_map_lock); 1605229d4f11SHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 1606229d4f11SHannes Reinecke bl += sprintf(b + bl, "%u %u\n", 1607229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_size, 1608229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_multiplier); 1609229d4f11SHannes Reinecke list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { 1610229d4f11SHannes Reinecke bl += sprintf(b + bl, "%llu %llu", 1611229d4f11SHannes Reinecke map->lba_map_first_lba, map->lba_map_last_lba); 1612229d4f11SHannes Reinecke list_for_each_entry(mem, &map->lba_map_mem_list, 1613229d4f11SHannes Reinecke lba_map_mem_list) { 1614229d4f11SHannes Reinecke switch (mem->lba_map_mem_alua_state) { 1615229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: 1616229d4f11SHannes Reinecke state = 'O'; 1617229d4f11SHannes Reinecke break; 1618229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: 1619229d4f11SHannes Reinecke state = 'A'; 1620229d4f11SHannes Reinecke break; 1621229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_STANDBY: 1622229d4f11SHannes Reinecke state = 'S'; 1623229d4f11SHannes Reinecke break; 1624229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_UNAVAILABLE: 1625229d4f11SHannes Reinecke state = 'U'; 1626229d4f11SHannes Reinecke break; 1627229d4f11SHannes Reinecke default: 1628229d4f11SHannes Reinecke state = '.'; 1629229d4f11SHannes Reinecke break; 1630229d4f11SHannes Reinecke } 1631229d4f11SHannes Reinecke bl += sprintf(b + bl, " %d:%c", 1632229d4f11SHannes Reinecke mem->lba_map_mem_alua_pg_id, state); 1633229d4f11SHannes Reinecke } 1634229d4f11SHannes Reinecke bl += sprintf(b + bl, "\n"); 1635229d4f11SHannes Reinecke } 1636229d4f11SHannes Reinecke spin_unlock(&dev->t10_alua.lba_map_lock); 1637229d4f11SHannes Reinecke return bl; 1638229d4f11SHannes Reinecke } 1639229d4f11SHannes Reinecke 1640229d4f11SHannes Reinecke static ssize_t target_core_store_dev_lba_map( 1641229d4f11SHannes Reinecke void *p, 1642229d4f11SHannes Reinecke const char *page, 1643229d4f11SHannes Reinecke size_t count) 1644229d4f11SHannes Reinecke { 1645229d4f11SHannes Reinecke struct se_device *dev = p; 1646229d4f11SHannes Reinecke struct t10_alua_lba_map *lba_map = NULL; 1647229d4f11SHannes Reinecke struct list_head lba_list; 1648229d4f11SHannes Reinecke char *map_entries, *ptr; 1649229d4f11SHannes Reinecke char state; 1650229d4f11SHannes Reinecke int pg_num = -1, pg; 1651229d4f11SHannes Reinecke int ret = 0, num = 0, pg_id, alua_state; 1652229d4f11SHannes Reinecke unsigned long start_lba = -1, end_lba = -1; 1653229d4f11SHannes Reinecke unsigned long segment_size = -1, segment_mult = -1; 1654229d4f11SHannes Reinecke 1655229d4f11SHannes Reinecke map_entries = kstrdup(page, GFP_KERNEL); 1656229d4f11SHannes Reinecke if (!map_entries) 1657229d4f11SHannes Reinecke return -ENOMEM; 1658229d4f11SHannes Reinecke 1659229d4f11SHannes Reinecke INIT_LIST_HEAD(&lba_list); 1660229d4f11SHannes Reinecke while ((ptr = strsep(&map_entries, "\n")) != NULL) { 1661229d4f11SHannes Reinecke if (!*ptr) 1662229d4f11SHannes Reinecke continue; 1663229d4f11SHannes Reinecke 1664229d4f11SHannes Reinecke if (num == 0) { 1665229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu\n", 1666229d4f11SHannes Reinecke &segment_size, &segment_mult) != 2) { 1667229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 1668229d4f11SHannes Reinecke ret = -EINVAL; 1669229d4f11SHannes Reinecke break; 1670229d4f11SHannes Reinecke } 1671229d4f11SHannes Reinecke num++; 1672229d4f11SHannes Reinecke continue; 1673229d4f11SHannes Reinecke } 1674229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { 1675229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 1676229d4f11SHannes Reinecke ret = -EINVAL; 1677229d4f11SHannes Reinecke break; 1678229d4f11SHannes Reinecke } 1679229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1680229d4f11SHannes Reinecke if (!ptr) { 1681229d4f11SHannes Reinecke pr_err("Invalid line %d, missing end lba\n", num); 1682229d4f11SHannes Reinecke ret = -EINVAL; 1683229d4f11SHannes Reinecke break; 1684229d4f11SHannes Reinecke } 1685229d4f11SHannes Reinecke ptr++; 1686229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1687229d4f11SHannes Reinecke if (!ptr) { 1688229d4f11SHannes Reinecke pr_err("Invalid line %d, missing state definitions\n", 1689229d4f11SHannes Reinecke num); 1690229d4f11SHannes Reinecke ret = -EINVAL; 1691229d4f11SHannes Reinecke break; 1692229d4f11SHannes Reinecke } 1693229d4f11SHannes Reinecke ptr++; 1694229d4f11SHannes Reinecke lba_map = core_alua_allocate_lba_map(&lba_list, 1695229d4f11SHannes Reinecke start_lba, end_lba); 1696229d4f11SHannes Reinecke if (IS_ERR(lba_map)) { 1697229d4f11SHannes Reinecke ret = PTR_ERR(lba_map); 1698229d4f11SHannes Reinecke break; 1699229d4f11SHannes Reinecke } 1700229d4f11SHannes Reinecke pg = 0; 1701229d4f11SHannes Reinecke while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { 1702229d4f11SHannes Reinecke switch (state) { 1703229d4f11SHannes Reinecke case 'O': 1704229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; 1705229d4f11SHannes Reinecke break; 1706229d4f11SHannes Reinecke case 'A': 1707229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; 1708229d4f11SHannes Reinecke break; 1709229d4f11SHannes Reinecke case 'S': 1710229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_STANDBY; 1711229d4f11SHannes Reinecke break; 1712229d4f11SHannes Reinecke case 'U': 1713229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; 1714229d4f11SHannes Reinecke break; 1715229d4f11SHannes Reinecke default: 1716229d4f11SHannes Reinecke pr_err("Invalid ALUA state '%c'\n", state); 1717229d4f11SHannes Reinecke ret = -EINVAL; 1718229d4f11SHannes Reinecke goto out; 1719229d4f11SHannes Reinecke } 1720229d4f11SHannes Reinecke 1721229d4f11SHannes Reinecke ret = core_alua_allocate_lba_map_mem(lba_map, 1722229d4f11SHannes Reinecke pg_id, alua_state); 1723229d4f11SHannes Reinecke if (ret) { 1724229d4f11SHannes Reinecke pr_err("Invalid target descriptor %d:%c " 1725229d4f11SHannes Reinecke "at line %d\n", 1726229d4f11SHannes Reinecke pg_id, state, num); 1727229d4f11SHannes Reinecke break; 1728229d4f11SHannes Reinecke } 1729229d4f11SHannes Reinecke pg++; 1730229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1731229d4f11SHannes Reinecke if (ptr) 1732229d4f11SHannes Reinecke ptr++; 1733229d4f11SHannes Reinecke else 1734229d4f11SHannes Reinecke break; 1735229d4f11SHannes Reinecke } 1736229d4f11SHannes Reinecke if (pg_num == -1) 1737229d4f11SHannes Reinecke pg_num = pg; 1738229d4f11SHannes Reinecke else if (pg != pg_num) { 1739229d4f11SHannes Reinecke pr_err("Only %d from %d port groups definitions " 1740229d4f11SHannes Reinecke "at line %d\n", pg, pg_num, num); 1741229d4f11SHannes Reinecke ret = -EINVAL; 1742229d4f11SHannes Reinecke break; 1743229d4f11SHannes Reinecke } 1744229d4f11SHannes Reinecke num++; 1745229d4f11SHannes Reinecke } 1746229d4f11SHannes Reinecke out: 1747229d4f11SHannes Reinecke if (ret) { 1748229d4f11SHannes Reinecke core_alua_free_lba_map(&lba_list); 1749229d4f11SHannes Reinecke count = ret; 1750229d4f11SHannes Reinecke } else 1751229d4f11SHannes Reinecke core_alua_set_lba_map(dev, &lba_list, 1752229d4f11SHannes Reinecke segment_size, segment_mult); 1753229d4f11SHannes Reinecke kfree(map_entries); 1754229d4f11SHannes Reinecke return count; 1755229d4f11SHannes Reinecke } 1756229d4f11SHannes Reinecke 1757229d4f11SHannes Reinecke static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { 1758229d4f11SHannes Reinecke .attr = { .ca_owner = THIS_MODULE, 1759229d4f11SHannes Reinecke .ca_name = "lba_map", 1760229d4f11SHannes Reinecke .ca_mode = S_IRUGO | S_IWUSR }, 1761229d4f11SHannes Reinecke .show = target_core_show_dev_lba_map, 1762229d4f11SHannes Reinecke .store = target_core_store_dev_lba_map, 1763229d4f11SHannes Reinecke }; 1764229d4f11SHannes Reinecke 176573112edcSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrs[] = { 1766c66ac9dbSNicholas Bellinger &target_core_attr_dev_info.attr, 1767c66ac9dbSNicholas Bellinger &target_core_attr_dev_control.attr, 1768c66ac9dbSNicholas Bellinger &target_core_attr_dev_alias.attr, 1769c66ac9dbSNicholas Bellinger &target_core_attr_dev_udev_path.attr, 1770c66ac9dbSNicholas Bellinger &target_core_attr_dev_enable.attr, 1771c66ac9dbSNicholas Bellinger &target_core_attr_dev_alua_lu_gp.attr, 1772229d4f11SHannes Reinecke &target_core_attr_dev_lba_map.attr, 1773c66ac9dbSNicholas Bellinger NULL, 1774c66ac9dbSNicholas Bellinger }; 1775c66ac9dbSNicholas Bellinger 1776c66ac9dbSNicholas Bellinger static void target_core_dev_release(struct config_item *item) 1777c66ac9dbSNicholas Bellinger { 17780fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 17790fd97ccfSChristoph Hellwig struct se_device *dev = 17800fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1781c66ac9dbSNicholas Bellinger 1782c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 17830fd97ccfSChristoph Hellwig target_free_device(dev); 1784c66ac9dbSNicholas Bellinger } 1785c66ac9dbSNicholas Bellinger 1786c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_show(struct config_item *item, 1787c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 1788c66ac9dbSNicholas Bellinger char *page) 1789c66ac9dbSNicholas Bellinger { 17900fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 17910fd97ccfSChristoph Hellwig struct se_device *dev = 17920fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1793c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 1794c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 1795c66ac9dbSNicholas Bellinger 17966708bb27SAndy Grover if (!tc_attr->show) 1797c66ac9dbSNicholas Bellinger return -EINVAL; 1798c66ac9dbSNicholas Bellinger 17990fd97ccfSChristoph Hellwig return tc_attr->show(dev, page); 1800c66ac9dbSNicholas Bellinger } 1801c66ac9dbSNicholas Bellinger 1802c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_store(struct config_item *item, 1803c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 1804c66ac9dbSNicholas Bellinger const char *page, size_t count) 1805c66ac9dbSNicholas Bellinger { 18060fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 18070fd97ccfSChristoph Hellwig struct se_device *dev = 18080fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1809c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 1810c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 1811c66ac9dbSNicholas Bellinger 18126708bb27SAndy Grover if (!tc_attr->store) 1813c66ac9dbSNicholas Bellinger return -EINVAL; 1814c66ac9dbSNicholas Bellinger 18150fd97ccfSChristoph Hellwig return tc_attr->store(dev, page, count); 1816c66ac9dbSNicholas Bellinger } 1817c66ac9dbSNicholas Bellinger 1818c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_item_ops = { 1819c66ac9dbSNicholas Bellinger .release = target_core_dev_release, 1820c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_show, 1821c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_store, 1822c66ac9dbSNicholas Bellinger }; 1823c66ac9dbSNicholas Bellinger 182473112edcSNicholas Bellinger TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); 1825c66ac9dbSNicholas Bellinger 182673112edcSNicholas Bellinger /* End functions for struct config_item_type tb_dev_cit */ 1827c66ac9dbSNicholas Bellinger 1828c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 1829c66ac9dbSNicholas Bellinger 1830c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); 1831c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ 1832c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 1833c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 1834c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 1835c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name, \ 1836c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_store_attr_##_name); 1837c66ac9dbSNicholas Bellinger 1838c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ 1839c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 1840c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 1841c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 1842c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name); 1843c66ac9dbSNicholas Bellinger 1844c66ac9dbSNicholas Bellinger /* 1845c66ac9dbSNicholas Bellinger * lu_gp_id 1846c66ac9dbSNicholas Bellinger */ 1847c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( 1848c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 1849c66ac9dbSNicholas Bellinger char *page) 1850c66ac9dbSNicholas Bellinger { 18516708bb27SAndy Grover if (!lu_gp->lu_gp_valid_id) 1852c66ac9dbSNicholas Bellinger return 0; 1853c66ac9dbSNicholas Bellinger 1854c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 1855c66ac9dbSNicholas Bellinger } 1856c66ac9dbSNicholas Bellinger 1857c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( 1858c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 1859c66ac9dbSNicholas Bellinger const char *page, 1860c66ac9dbSNicholas Bellinger size_t count) 1861c66ac9dbSNicholas Bellinger { 1862c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 1863c66ac9dbSNicholas Bellinger unsigned long lu_gp_id; 1864c66ac9dbSNicholas Bellinger int ret; 1865c66ac9dbSNicholas Bellinger 186657103d7fSJingoo Han ret = kstrtoul(page, 0, &lu_gp_id); 1867c66ac9dbSNicholas Bellinger if (ret < 0) { 186857103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 1869c66ac9dbSNicholas Bellinger " lu_gp_id\n", ret); 187057103d7fSJingoo Han return ret; 1871c66ac9dbSNicholas Bellinger } 1872c66ac9dbSNicholas Bellinger if (lu_gp_id > 0x0000ffff) { 18736708bb27SAndy Grover pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 1874c66ac9dbSNicholas Bellinger " 0x0000ffff\n", lu_gp_id); 1875c66ac9dbSNicholas Bellinger return -EINVAL; 1876c66ac9dbSNicholas Bellinger } 1877c66ac9dbSNicholas Bellinger 1878c66ac9dbSNicholas Bellinger ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 1879c66ac9dbSNicholas Bellinger if (ret < 0) 1880c66ac9dbSNicholas Bellinger return -EINVAL; 1881c66ac9dbSNicholas Bellinger 18826708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 1883c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s to ID: %hu\n", 1884c66ac9dbSNicholas Bellinger config_item_name(&alua_lu_gp_cg->cg_item), 1885c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 1886c66ac9dbSNicholas Bellinger 1887c66ac9dbSNicholas Bellinger return count; 1888c66ac9dbSNicholas Bellinger } 1889c66ac9dbSNicholas Bellinger 1890c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); 1891c66ac9dbSNicholas Bellinger 1892c66ac9dbSNicholas Bellinger /* 1893c66ac9dbSNicholas Bellinger * members 1894c66ac9dbSNicholas Bellinger */ 1895c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_members( 1896c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 1897c66ac9dbSNicholas Bellinger char *page) 1898c66ac9dbSNicholas Bellinger { 1899c66ac9dbSNicholas Bellinger struct se_device *dev; 1900c66ac9dbSNicholas Bellinger struct se_hba *hba; 1901c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1902c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 1903c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 1904c66ac9dbSNicholas Bellinger 1905c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 1906c66ac9dbSNicholas Bellinger 1907c66ac9dbSNicholas Bellinger spin_lock(&lu_gp->lu_gp_lock); 1908c66ac9dbSNicholas Bellinger list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 1909c66ac9dbSNicholas Bellinger dev = lu_gp_mem->lu_gp_mem_dev; 19100fd97ccfSChristoph Hellwig hba = dev->se_hba; 1911c66ac9dbSNicholas Bellinger 1912c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 1913c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 19140fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item)); 1915c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 1916c66ac9dbSNicholas Bellinger 1917c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 19186708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 1919c66ac9dbSNicholas Bellinger "_members buffer\n"); 1920c66ac9dbSNicholas Bellinger break; 1921c66ac9dbSNicholas Bellinger } 1922c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 1923c66ac9dbSNicholas Bellinger len += cur_len; 1924c66ac9dbSNicholas Bellinger } 1925c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp->lu_gp_lock); 1926c66ac9dbSNicholas Bellinger 1927c66ac9dbSNicholas Bellinger return len; 1928c66ac9dbSNicholas Bellinger } 1929c66ac9dbSNicholas Bellinger 1930c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR_RO(members); 1931c66ac9dbSNicholas Bellinger 1932c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); 1933c66ac9dbSNicholas Bellinger 1934c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 1935c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_lu_gp_id.attr, 1936c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_members.attr, 1937c66ac9dbSNicholas Bellinger NULL, 1938c66ac9dbSNicholas Bellinger }; 1939c66ac9dbSNicholas Bellinger 19401f6fe7cbSNicholas Bellinger static void target_core_alua_lu_gp_release(struct config_item *item) 19411f6fe7cbSNicholas Bellinger { 19421f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 19431f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 19441f6fe7cbSNicholas Bellinger 19451f6fe7cbSNicholas Bellinger core_alua_free_lu_gp(lu_gp); 19461f6fe7cbSNicholas Bellinger } 19471f6fe7cbSNicholas Bellinger 1948c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_lu_gp_ops = { 19491f6fe7cbSNicholas Bellinger .release = target_core_alua_lu_gp_release, 1950c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_lu_gp_attr_show, 1951c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_lu_gp_attr_store, 1952c66ac9dbSNicholas Bellinger }; 1953c66ac9dbSNicholas Bellinger 1954c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gp_cit = { 1955c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_lu_gp_ops, 1956c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_lu_gp_attrs, 1957c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 1958c66ac9dbSNicholas Bellinger }; 1959c66ac9dbSNicholas Bellinger 1960c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 1961c66ac9dbSNicholas Bellinger 1962c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 1963c66ac9dbSNicholas Bellinger 1964c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_lu_gp( 1965c66ac9dbSNicholas Bellinger struct config_group *group, 1966c66ac9dbSNicholas Bellinger const char *name) 1967c66ac9dbSNicholas Bellinger { 1968c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 1969c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = NULL; 1970c66ac9dbSNicholas Bellinger struct config_item *alua_lu_gp_ci = NULL; 1971c66ac9dbSNicholas Bellinger 1972c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp(name, 0); 1973c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 1974c66ac9dbSNicholas Bellinger return NULL; 1975c66ac9dbSNicholas Bellinger 1976c66ac9dbSNicholas Bellinger alua_lu_gp_cg = &lu_gp->lu_gp_group; 1977c66ac9dbSNicholas Bellinger alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 1978c66ac9dbSNicholas Bellinger 1979c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_lu_gp_cg, name, 1980c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 1981c66ac9dbSNicholas Bellinger 19826708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 1983c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s\n", 1984c66ac9dbSNicholas Bellinger config_item_name(alua_lu_gp_ci)); 1985c66ac9dbSNicholas Bellinger 1986c66ac9dbSNicholas Bellinger return alua_lu_gp_cg; 1987c66ac9dbSNicholas Bellinger 1988c66ac9dbSNicholas Bellinger } 1989c66ac9dbSNicholas Bellinger 1990c66ac9dbSNicholas Bellinger static void target_core_alua_drop_lu_gp( 1991c66ac9dbSNicholas Bellinger struct config_group *group, 1992c66ac9dbSNicholas Bellinger struct config_item *item) 1993c66ac9dbSNicholas Bellinger { 1994c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 1995c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 1996c66ac9dbSNicholas Bellinger 19976708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 1998c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s, ID: %hu\n", 1999c66ac9dbSNicholas Bellinger config_item_name(item), lu_gp->lu_gp_id); 20001f6fe7cbSNicholas Bellinger /* 20011f6fe7cbSNicholas Bellinger * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 20021f6fe7cbSNicholas Bellinger * -> target_core_alua_lu_gp_release() 20031f6fe7cbSNicholas Bellinger */ 2004c66ac9dbSNicholas Bellinger config_item_put(item); 2005c66ac9dbSNicholas Bellinger } 2006c66ac9dbSNicholas Bellinger 2007c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 2008c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_lu_gp, 2009c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_lu_gp, 2010c66ac9dbSNicholas Bellinger }; 2011c66ac9dbSNicholas Bellinger 2012c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gps_cit = { 2013c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2014c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_lu_gps_group_ops, 2015c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2016c66ac9dbSNicholas Bellinger }; 2017c66ac9dbSNicholas Bellinger 2018c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 2019c66ac9dbSNicholas Bellinger 2020c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2021c66ac9dbSNicholas Bellinger 2022c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); 2023c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ 2024c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 2025c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 2026c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2027c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name, \ 2028c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_store_attr_##_name); 2029c66ac9dbSNicholas Bellinger 2030c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ 2031c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 2032c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 2033c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2034c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name); 2035c66ac9dbSNicholas Bellinger 2036c66ac9dbSNicholas Bellinger /* 2037c66ac9dbSNicholas Bellinger * alua_access_state 2038c66ac9dbSNicholas Bellinger */ 2039c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( 2040c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2041c66ac9dbSNicholas Bellinger char *page) 2042c66ac9dbSNicholas Bellinger { 2043c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", 2044c66ac9dbSNicholas Bellinger atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); 2045c66ac9dbSNicholas Bellinger } 2046c66ac9dbSNicholas Bellinger 2047c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( 2048c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2049c66ac9dbSNicholas Bellinger const char *page, 2050c66ac9dbSNicholas Bellinger size_t count) 2051c66ac9dbSNicholas Bellinger { 20520fd97ccfSChristoph Hellwig struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; 2053c66ac9dbSNicholas Bellinger unsigned long tmp; 2054c66ac9dbSNicholas Bellinger int new_state, ret; 2055c66ac9dbSNicholas Bellinger 20566708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 2057125d0119SHannes Reinecke pr_err("Unable to do implicit ALUA on non valid" 2058c66ac9dbSNicholas Bellinger " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); 2059c66ac9dbSNicholas Bellinger return -EINVAL; 2060c66ac9dbSNicholas Bellinger } 2061f1453773SNicholas Bellinger if (!(dev->dev_flags & DF_CONFIGURED)) { 2062f1453773SNicholas Bellinger pr_err("Unable to set alua_access_state while device is" 2063f1453773SNicholas Bellinger " not configured\n"); 2064f1453773SNicholas Bellinger return -ENODEV; 2065f1453773SNicholas Bellinger } 2066c66ac9dbSNicholas Bellinger 206757103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2068c66ac9dbSNicholas Bellinger if (ret < 0) { 20696708bb27SAndy Grover pr_err("Unable to extract new ALUA access state from" 2070c66ac9dbSNicholas Bellinger " %s\n", page); 207157103d7fSJingoo Han return ret; 2072c66ac9dbSNicholas Bellinger } 2073c66ac9dbSNicholas Bellinger new_state = (int)tmp; 2074c66ac9dbSNicholas Bellinger 2075125d0119SHannes Reinecke if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { 2076125d0119SHannes Reinecke pr_err("Unable to process implicit configfs ALUA" 2077125d0119SHannes Reinecke " transition while TPGS_IMPLICIT_ALUA is disabled\n"); 2078c66ac9dbSNicholas Bellinger return -EINVAL; 2079c66ac9dbSNicholas Bellinger } 2080c66094bfSHannes Reinecke if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && 2081c66094bfSHannes Reinecke new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { 2082c66094bfSHannes Reinecke /* LBA DEPENDENT is only allowed with implicit ALUA */ 2083c66094bfSHannes Reinecke pr_err("Unable to process implicit configfs ALUA transition" 2084c66094bfSHannes Reinecke " while explicit ALUA management is enabled\n"); 2085c66094bfSHannes Reinecke return -EINVAL; 2086c66094bfSHannes Reinecke } 2087c66ac9dbSNicholas Bellinger 20880fd97ccfSChristoph Hellwig ret = core_alua_do_port_transition(tg_pt_gp, dev, 2089c66ac9dbSNicholas Bellinger NULL, NULL, new_state, 0); 2090c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; 2091c66ac9dbSNicholas Bellinger } 2092c66ac9dbSNicholas Bellinger 2093c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); 2094c66ac9dbSNicholas Bellinger 2095c66ac9dbSNicholas Bellinger /* 2096c66ac9dbSNicholas Bellinger * alua_access_status 2097c66ac9dbSNicholas Bellinger */ 2098c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( 2099c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2100c66ac9dbSNicholas Bellinger char *page) 2101c66ac9dbSNicholas Bellinger { 2102c66ac9dbSNicholas Bellinger return sprintf(page, "%s\n", 2103c66ac9dbSNicholas Bellinger core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2104c66ac9dbSNicholas Bellinger } 2105c66ac9dbSNicholas Bellinger 2106c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( 2107c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2108c66ac9dbSNicholas Bellinger const char *page, 2109c66ac9dbSNicholas Bellinger size_t count) 2110c66ac9dbSNicholas Bellinger { 2111c66ac9dbSNicholas Bellinger unsigned long tmp; 2112c66ac9dbSNicholas Bellinger int new_status, ret; 2113c66ac9dbSNicholas Bellinger 21146708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 21156708bb27SAndy Grover pr_err("Unable to do set ALUA access status on non" 2116c66ac9dbSNicholas Bellinger " valid tg_pt_gp ID: %hu\n", 2117c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_valid_id); 2118c66ac9dbSNicholas Bellinger return -EINVAL; 2119c66ac9dbSNicholas Bellinger } 2120c66ac9dbSNicholas Bellinger 212157103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2122c66ac9dbSNicholas Bellinger if (ret < 0) { 21236708bb27SAndy Grover pr_err("Unable to extract new ALUA access status" 2124c66ac9dbSNicholas Bellinger " from %s\n", page); 212557103d7fSJingoo Han return ret; 2126c66ac9dbSNicholas Bellinger } 2127c66ac9dbSNicholas Bellinger new_status = (int)tmp; 2128c66ac9dbSNicholas Bellinger 2129c66ac9dbSNicholas Bellinger if ((new_status != ALUA_STATUS_NONE) && 2130125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && 2131125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { 21326708bb27SAndy Grover pr_err("Illegal ALUA access status: 0x%02x\n", 2133c66ac9dbSNicholas Bellinger new_status); 2134c66ac9dbSNicholas Bellinger return -EINVAL; 2135c66ac9dbSNicholas Bellinger } 2136c66ac9dbSNicholas Bellinger 2137c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2138c66ac9dbSNicholas Bellinger return count; 2139c66ac9dbSNicholas Bellinger } 2140c66ac9dbSNicholas Bellinger 2141c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); 2142c66ac9dbSNicholas Bellinger 2143c66ac9dbSNicholas Bellinger /* 2144c66ac9dbSNicholas Bellinger * alua_access_type 2145c66ac9dbSNicholas Bellinger */ 2146c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( 2147c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2148c66ac9dbSNicholas Bellinger char *page) 2149c66ac9dbSNicholas Bellinger { 2150c66ac9dbSNicholas Bellinger return core_alua_show_access_type(tg_pt_gp, page); 2151c66ac9dbSNicholas Bellinger } 2152c66ac9dbSNicholas Bellinger 2153c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( 2154c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2155c66ac9dbSNicholas Bellinger const char *page, 2156c66ac9dbSNicholas Bellinger size_t count) 2157c66ac9dbSNicholas Bellinger { 2158c66ac9dbSNicholas Bellinger return core_alua_store_access_type(tg_pt_gp, page, count); 2159c66ac9dbSNicholas Bellinger } 2160c66ac9dbSNicholas Bellinger 2161c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); 2162c66ac9dbSNicholas Bellinger 2163c66ac9dbSNicholas Bellinger /* 21646be526c4SHannes Reinecke * alua_supported_states 21656be526c4SHannes Reinecke */ 2166b0a382c5SHannes Reinecke 2167b0a382c5SHannes Reinecke #define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit) \ 2168b0a382c5SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \ 2169b0a382c5SHannes Reinecke struct t10_alua_tg_pt_gp *t, char *p) \ 2170b0a382c5SHannes Reinecke { \ 2171b0a382c5SHannes Reinecke return sprintf(p, "%d\n", !!(t->_var & _bit)); \ 21726be526c4SHannes Reinecke } 21736be526c4SHannes Reinecke 2174b0a382c5SHannes Reinecke #define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit) \ 2175b0a382c5SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\ 2176b0a382c5SHannes Reinecke struct t10_alua_tg_pt_gp *t, const char *p, size_t c) \ 2177b0a382c5SHannes Reinecke { \ 2178b0a382c5SHannes Reinecke unsigned long tmp; \ 2179b0a382c5SHannes Reinecke int ret; \ 2180b0a382c5SHannes Reinecke \ 2181b0a382c5SHannes Reinecke if (!t->tg_pt_gp_valid_id) { \ 2182b0a382c5SHannes Reinecke pr_err("Unable to do set ##_name ALUA state on non" \ 2183b0a382c5SHannes Reinecke " valid tg_pt_gp ID: %hu\n", \ 2184b0a382c5SHannes Reinecke t->tg_pt_gp_valid_id); \ 2185b0a382c5SHannes Reinecke return -EINVAL; \ 2186b0a382c5SHannes Reinecke } \ 2187b0a382c5SHannes Reinecke \ 2188b0a382c5SHannes Reinecke ret = kstrtoul(p, 0, &tmp); \ 2189b0a382c5SHannes Reinecke if (ret < 0) { \ 2190b0a382c5SHannes Reinecke pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ 2191b0a382c5SHannes Reinecke return -EINVAL; \ 2192b0a382c5SHannes Reinecke } \ 2193b0a382c5SHannes Reinecke if (tmp > 1) { \ 2194b0a382c5SHannes Reinecke pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ 2195b0a382c5SHannes Reinecke return -EINVAL; \ 2196b0a382c5SHannes Reinecke } \ 21971f0b030cSSebastian Herbszt if (tmp) \ 2198b0a382c5SHannes Reinecke t->_var |= _bit; \ 2199b0a382c5SHannes Reinecke else \ 2200b0a382c5SHannes Reinecke t->_var &= ~_bit; \ 2201b0a382c5SHannes Reinecke \ 2202b0a382c5SHannes Reinecke return c; \ 22036be526c4SHannes Reinecke } 22046be526c4SHannes Reinecke 2205b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning, 2206b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_T_SUP); 2207b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning, 2208b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_T_SUP); 2209b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR); 22106be526c4SHannes Reinecke 2211b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline, 2212b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_O_SUP); 2213b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(offline, 2214b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_O_SUP); 2215b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR); 22166be526c4SHannes Reinecke 2217b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent, 2218b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); 2219b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent, 2220b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); 2221c66094bfSHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO); 22226be526c4SHannes Reinecke 2223b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable, 2224b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_U_SUP); 2225b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable, 2226b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_U_SUP); 2227b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR); 22286be526c4SHannes Reinecke 2229b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby, 2230b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_S_SUP); 2231b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(standby, 2232b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_S_SUP); 2233b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR); 2234b0a382c5SHannes Reinecke 2235b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized, 2236b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AO_SUP); 2237b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized, 2238b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AO_SUP); 2239b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR); 2240b0a382c5SHannes Reinecke 2241b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized, 2242b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AN_SUP); 2243b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized, 2244b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AN_SUP); 2245b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR); 22466be526c4SHannes Reinecke 22476be526c4SHannes Reinecke /* 2248c66ac9dbSNicholas Bellinger * alua_write_metadata 2249c66ac9dbSNicholas Bellinger */ 2250c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( 2251c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2252c66ac9dbSNicholas Bellinger char *page) 2253c66ac9dbSNicholas Bellinger { 2254c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); 2255c66ac9dbSNicholas Bellinger } 2256c66ac9dbSNicholas Bellinger 2257c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( 2258c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2259c66ac9dbSNicholas Bellinger const char *page, 2260c66ac9dbSNicholas Bellinger size_t count) 2261c66ac9dbSNicholas Bellinger { 2262c66ac9dbSNicholas Bellinger unsigned long tmp; 2263c66ac9dbSNicholas Bellinger int ret; 2264c66ac9dbSNicholas Bellinger 226557103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2266c66ac9dbSNicholas Bellinger if (ret < 0) { 22676708bb27SAndy Grover pr_err("Unable to extract alua_write_metadata\n"); 226857103d7fSJingoo Han return ret; 2269c66ac9dbSNicholas Bellinger } 2270c66ac9dbSNicholas Bellinger 2271c66ac9dbSNicholas Bellinger if ((tmp != 0) && (tmp != 1)) { 22726708bb27SAndy Grover pr_err("Illegal value for alua_write_metadata:" 2273c66ac9dbSNicholas Bellinger " %lu\n", tmp); 2274c66ac9dbSNicholas Bellinger return -EINVAL; 2275c66ac9dbSNicholas Bellinger } 2276c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2277c66ac9dbSNicholas Bellinger 2278c66ac9dbSNicholas Bellinger return count; 2279c66ac9dbSNicholas Bellinger } 2280c66ac9dbSNicholas Bellinger 2281c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); 2282c66ac9dbSNicholas Bellinger 2283c66ac9dbSNicholas Bellinger 2284c66ac9dbSNicholas Bellinger 2285c66ac9dbSNicholas Bellinger /* 2286c66ac9dbSNicholas Bellinger * nonop_delay_msecs 2287c66ac9dbSNicholas Bellinger */ 2288c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( 2289c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2290c66ac9dbSNicholas Bellinger char *page) 2291c66ac9dbSNicholas Bellinger { 2292c66ac9dbSNicholas Bellinger return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); 2293c66ac9dbSNicholas Bellinger 2294c66ac9dbSNicholas Bellinger } 2295c66ac9dbSNicholas Bellinger 2296c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( 2297c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2298c66ac9dbSNicholas Bellinger const char *page, 2299c66ac9dbSNicholas Bellinger size_t count) 2300c66ac9dbSNicholas Bellinger { 2301c66ac9dbSNicholas Bellinger return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); 2302c66ac9dbSNicholas Bellinger } 2303c66ac9dbSNicholas Bellinger 2304c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); 2305c66ac9dbSNicholas Bellinger 2306c66ac9dbSNicholas Bellinger /* 2307c66ac9dbSNicholas Bellinger * trans_delay_msecs 2308c66ac9dbSNicholas Bellinger */ 2309c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( 2310c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2311c66ac9dbSNicholas Bellinger char *page) 2312c66ac9dbSNicholas Bellinger { 2313c66ac9dbSNicholas Bellinger return core_alua_show_trans_delay_msecs(tg_pt_gp, page); 2314c66ac9dbSNicholas Bellinger } 2315c66ac9dbSNicholas Bellinger 2316c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( 2317c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2318c66ac9dbSNicholas Bellinger const char *page, 2319c66ac9dbSNicholas Bellinger size_t count) 2320c66ac9dbSNicholas Bellinger { 2321c66ac9dbSNicholas Bellinger return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); 2322c66ac9dbSNicholas Bellinger } 2323c66ac9dbSNicholas Bellinger 2324c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); 2325c66ac9dbSNicholas Bellinger 2326c66ac9dbSNicholas Bellinger /* 2327125d0119SHannes Reinecke * implicit_trans_secs 23285b9a4d72SNicholas Bellinger */ 2329125d0119SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs( 23305b9a4d72SNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 23315b9a4d72SNicholas Bellinger char *page) 23325b9a4d72SNicholas Bellinger { 2333125d0119SHannes Reinecke return core_alua_show_implicit_trans_secs(tg_pt_gp, page); 23345b9a4d72SNicholas Bellinger } 23355b9a4d72SNicholas Bellinger 2336125d0119SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs( 23375b9a4d72SNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 23385b9a4d72SNicholas Bellinger const char *page, 23395b9a4d72SNicholas Bellinger size_t count) 23405b9a4d72SNicholas Bellinger { 2341125d0119SHannes Reinecke return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count); 23425b9a4d72SNicholas Bellinger } 23435b9a4d72SNicholas Bellinger 2344125d0119SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR); 23455b9a4d72SNicholas Bellinger 23465b9a4d72SNicholas Bellinger /* 2347c66ac9dbSNicholas Bellinger * preferred 2348c66ac9dbSNicholas Bellinger */ 2349c66ac9dbSNicholas Bellinger 2350c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( 2351c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2352c66ac9dbSNicholas Bellinger char *page) 2353c66ac9dbSNicholas Bellinger { 2354c66ac9dbSNicholas Bellinger return core_alua_show_preferred_bit(tg_pt_gp, page); 2355c66ac9dbSNicholas Bellinger } 2356c66ac9dbSNicholas Bellinger 2357c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( 2358c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2359c66ac9dbSNicholas Bellinger const char *page, 2360c66ac9dbSNicholas Bellinger size_t count) 2361c66ac9dbSNicholas Bellinger { 2362c66ac9dbSNicholas Bellinger return core_alua_store_preferred_bit(tg_pt_gp, page, count); 2363c66ac9dbSNicholas Bellinger } 2364c66ac9dbSNicholas Bellinger 2365c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); 2366c66ac9dbSNicholas Bellinger 2367c66ac9dbSNicholas Bellinger /* 2368c66ac9dbSNicholas Bellinger * tg_pt_gp_id 2369c66ac9dbSNicholas Bellinger */ 2370c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( 2371c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2372c66ac9dbSNicholas Bellinger char *page) 2373c66ac9dbSNicholas Bellinger { 23746708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) 2375c66ac9dbSNicholas Bellinger return 0; 2376c66ac9dbSNicholas Bellinger 2377c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 2378c66ac9dbSNicholas Bellinger } 2379c66ac9dbSNicholas Bellinger 2380c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( 2381c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2382c66ac9dbSNicholas Bellinger const char *page, 2383c66ac9dbSNicholas Bellinger size_t count) 2384c66ac9dbSNicholas Bellinger { 2385c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2386c66ac9dbSNicholas Bellinger unsigned long tg_pt_gp_id; 2387c66ac9dbSNicholas Bellinger int ret; 2388c66ac9dbSNicholas Bellinger 238957103d7fSJingoo Han ret = kstrtoul(page, 0, &tg_pt_gp_id); 2390c66ac9dbSNicholas Bellinger if (ret < 0) { 239157103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2392c66ac9dbSNicholas Bellinger " tg_pt_gp_id\n", ret); 239357103d7fSJingoo Han return ret; 2394c66ac9dbSNicholas Bellinger } 2395c66ac9dbSNicholas Bellinger if (tg_pt_gp_id > 0x0000ffff) { 23966708bb27SAndy Grover pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" 2397c66ac9dbSNicholas Bellinger " 0x0000ffff\n", tg_pt_gp_id); 2398c66ac9dbSNicholas Bellinger return -EINVAL; 2399c66ac9dbSNicholas Bellinger } 2400c66ac9dbSNicholas Bellinger 2401c66ac9dbSNicholas Bellinger ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 2402c66ac9dbSNicholas Bellinger if (ret < 0) 2403c66ac9dbSNicholas Bellinger return -EINVAL; 2404c66ac9dbSNicholas Bellinger 24056708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 2406c66ac9dbSNicholas Bellinger "core/alua/tg_pt_gps/%s to ID: %hu\n", 2407c66ac9dbSNicholas Bellinger config_item_name(&alua_tg_pt_gp_cg->cg_item), 2408c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_id); 2409c66ac9dbSNicholas Bellinger 2410c66ac9dbSNicholas Bellinger return count; 2411c66ac9dbSNicholas Bellinger } 2412c66ac9dbSNicholas Bellinger 2413c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); 2414c66ac9dbSNicholas Bellinger 2415c66ac9dbSNicholas Bellinger /* 2416c66ac9dbSNicholas Bellinger * members 2417c66ac9dbSNicholas Bellinger */ 2418c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_members( 2419c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2420c66ac9dbSNicholas Bellinger char *page) 2421c66ac9dbSNicholas Bellinger { 2422c66ac9dbSNicholas Bellinger struct se_port *port; 2423c66ac9dbSNicholas Bellinger struct se_portal_group *tpg; 2424c66ac9dbSNicholas Bellinger struct se_lun *lun; 2425c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 2426c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2427c66ac9dbSNicholas Bellinger unsigned char buf[TG_PT_GROUP_NAME_BUF]; 2428c66ac9dbSNicholas Bellinger 2429c66ac9dbSNicholas Bellinger memset(buf, 0, TG_PT_GROUP_NAME_BUF); 2430c66ac9dbSNicholas Bellinger 2431c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp->tg_pt_gp_lock); 2432c66ac9dbSNicholas Bellinger list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, 2433c66ac9dbSNicholas Bellinger tg_pt_gp_mem_list) { 2434c66ac9dbSNicholas Bellinger port = tg_pt_gp_mem->tg_pt; 2435c66ac9dbSNicholas Bellinger tpg = port->sep_tpg; 2436c66ac9dbSNicholas Bellinger lun = port->sep_lun; 2437c66ac9dbSNicholas Bellinger 2438c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 2439e3d6f909SAndy Grover "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), 2440e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), 2441e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 2442c66ac9dbSNicholas Bellinger config_item_name(&lun->lun_group.cg_item)); 2443c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2444c66ac9dbSNicholas Bellinger 2445c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 24466708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2447c66ac9dbSNicholas Bellinger "_members buffer\n"); 2448c66ac9dbSNicholas Bellinger break; 2449c66ac9dbSNicholas Bellinger } 2450c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2451c66ac9dbSNicholas Bellinger len += cur_len; 2452c66ac9dbSNicholas Bellinger } 2453c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 2454c66ac9dbSNicholas Bellinger 2455c66ac9dbSNicholas Bellinger return len; 2456c66ac9dbSNicholas Bellinger } 2457c66ac9dbSNicholas Bellinger 2458c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR_RO(members); 2459c66ac9dbSNicholas Bellinger 2460c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, 2461c66ac9dbSNicholas Bellinger tg_pt_gp_group); 2462c66ac9dbSNicholas Bellinger 2463c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 2464c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_state.attr, 2465c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_status.attr, 2466c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_type.attr, 2467b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_transitioning.attr, 2468b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_offline.attr, 2469b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr, 2470b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_unavailable.attr, 2471b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_standby.attr, 2472b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr, 2473b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr, 2474c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_write_metadata.attr, 2475c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, 2476c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, 2477125d0119SHannes Reinecke &target_core_alua_tg_pt_gp_implicit_trans_secs.attr, 2478c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_preferred.attr, 2479c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, 2480c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_members.attr, 2481c66ac9dbSNicholas Bellinger NULL, 2482c66ac9dbSNicholas Bellinger }; 2483c66ac9dbSNicholas Bellinger 24841f6fe7cbSNicholas Bellinger static void target_core_alua_tg_pt_gp_release(struct config_item *item) 24851f6fe7cbSNicholas Bellinger { 24861f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 24871f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 24881f6fe7cbSNicholas Bellinger 24891f6fe7cbSNicholas Bellinger core_alua_free_tg_pt_gp(tg_pt_gp); 24901f6fe7cbSNicholas Bellinger } 24911f6fe7cbSNicholas Bellinger 2492c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 24931f6fe7cbSNicholas Bellinger .release = target_core_alua_tg_pt_gp_release, 2494c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_tg_pt_gp_attr_show, 2495c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_tg_pt_gp_attr_store, 2496c66ac9dbSNicholas Bellinger }; 2497c66ac9dbSNicholas Bellinger 2498c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_tg_pt_gp_cit = { 2499c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 2500c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_tg_pt_gp_attrs, 2501c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2502c66ac9dbSNicholas Bellinger }; 2503c66ac9dbSNicholas Bellinger 2504c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2505c66ac9dbSNicholas Bellinger 250672aca57bSNicholas Bellinger /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 2507c66ac9dbSNicholas Bellinger 2508c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_tg_pt_gp( 2509c66ac9dbSNicholas Bellinger struct config_group *group, 2510c66ac9dbSNicholas Bellinger const char *name) 2511c66ac9dbSNicholas Bellinger { 2512c66ac9dbSNicholas Bellinger struct t10_alua *alua = container_of(group, struct t10_alua, 2513c66ac9dbSNicholas Bellinger alua_tg_pt_gps_group); 2514c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2515c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = NULL; 2516c66ac9dbSNicholas Bellinger struct config_item *alua_tg_pt_gp_ci = NULL; 2517c66ac9dbSNicholas Bellinger 25180fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); 25196708bb27SAndy Grover if (!tg_pt_gp) 2520c66ac9dbSNicholas Bellinger return NULL; 2521c66ac9dbSNicholas Bellinger 2522c66ac9dbSNicholas Bellinger alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2523c66ac9dbSNicholas Bellinger alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 2524c66ac9dbSNicholas Bellinger 2525c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_tg_pt_gp_cg, name, 2526c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_cit); 2527c66ac9dbSNicholas Bellinger 25286708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 2529c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s\n", 2530c66ac9dbSNicholas Bellinger config_item_name(alua_tg_pt_gp_ci)); 2531c66ac9dbSNicholas Bellinger 2532c66ac9dbSNicholas Bellinger return alua_tg_pt_gp_cg; 2533c66ac9dbSNicholas Bellinger } 2534c66ac9dbSNicholas Bellinger 2535c66ac9dbSNicholas Bellinger static void target_core_alua_drop_tg_pt_gp( 2536c66ac9dbSNicholas Bellinger struct config_group *group, 2537c66ac9dbSNicholas Bellinger struct config_item *item) 2538c66ac9dbSNicholas Bellinger { 2539c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2540c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2541c66ac9dbSNicholas Bellinger 25426708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 2543c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s, ID: %hu\n", 2544c66ac9dbSNicholas Bellinger config_item_name(item), tg_pt_gp->tg_pt_gp_id); 25451f6fe7cbSNicholas Bellinger /* 25461f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 25471f6fe7cbSNicholas Bellinger * -> target_core_alua_tg_pt_gp_release(). 25481f6fe7cbSNicholas Bellinger */ 2549c66ac9dbSNicholas Bellinger config_item_put(item); 2550c66ac9dbSNicholas Bellinger } 2551c66ac9dbSNicholas Bellinger 2552c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 2553c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_tg_pt_gp, 2554c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_tg_pt_gp, 2555c66ac9dbSNicholas Bellinger }; 2556c66ac9dbSNicholas Bellinger 255772aca57bSNicholas Bellinger TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); 2558c66ac9dbSNicholas Bellinger 255972aca57bSNicholas Bellinger /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 2560c66ac9dbSNicholas Bellinger 2561c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_cit */ 2562c66ac9dbSNicholas Bellinger 2563c66ac9dbSNicholas Bellinger /* 2564c66ac9dbSNicholas Bellinger * target_core_alua_cit is a ConfigFS group that lives under 2565c66ac9dbSNicholas Bellinger * /sys/kernel/config/target/core/alua. There are default groups 2566c66ac9dbSNicholas Bellinger * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 2567c66ac9dbSNicholas Bellinger * target_core_alua_cit in target_core_init_configfs() below. 2568c66ac9dbSNicholas Bellinger */ 2569c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_cit = { 2570c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2571c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 2572c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2573c66ac9dbSNicholas Bellinger }; 2574c66ac9dbSNicholas Bellinger 2575c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_cit */ 2576c66ac9dbSNicholas Bellinger 2577d23ab570SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_stat_cit */ 257812d23384SNicholas Bellinger 257912d23384SNicholas Bellinger static struct config_group *target_core_stat_mkdir( 258012d23384SNicholas Bellinger struct config_group *group, 258112d23384SNicholas Bellinger const char *name) 258212d23384SNicholas Bellinger { 258312d23384SNicholas Bellinger return ERR_PTR(-ENOSYS); 258412d23384SNicholas Bellinger } 258512d23384SNicholas Bellinger 258612d23384SNicholas Bellinger static void target_core_stat_rmdir( 258712d23384SNicholas Bellinger struct config_group *group, 258812d23384SNicholas Bellinger struct config_item *item) 258912d23384SNicholas Bellinger { 259012d23384SNicholas Bellinger return; 259112d23384SNicholas Bellinger } 259212d23384SNicholas Bellinger 259312d23384SNicholas Bellinger static struct configfs_group_operations target_core_stat_group_ops = { 259412d23384SNicholas Bellinger .make_group = &target_core_stat_mkdir, 259512d23384SNicholas Bellinger .drop_item = &target_core_stat_rmdir, 259612d23384SNicholas Bellinger }; 259712d23384SNicholas Bellinger 2598d23ab570SNicholas Bellinger TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); 259912d23384SNicholas Bellinger 2600d23ab570SNicholas Bellinger /* End functions for struct config_item_type tb_dev_stat_cit */ 260112d23384SNicholas Bellinger 2602c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_hba_cit */ 2603c66ac9dbSNicholas Bellinger 2604c66ac9dbSNicholas Bellinger static struct config_group *target_core_make_subdev( 2605c66ac9dbSNicholas Bellinger struct config_group *group, 2606c66ac9dbSNicholas Bellinger const char *name) 2607c66ac9dbSNicholas Bellinger { 2608c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2609c66ac9dbSNicholas Bellinger struct se_subsystem_api *t; 2610c66ac9dbSNicholas Bellinger struct config_item *hba_ci = &group->cg_item; 2611c66ac9dbSNicholas Bellinger struct se_hba *hba = item_to_hba(hba_ci); 26120fd97ccfSChristoph Hellwig struct se_device *dev; 2613c66ac9dbSNicholas Bellinger struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; 261412d23384SNicholas Bellinger struct config_group *dev_stat_grp = NULL; 261512d23384SNicholas Bellinger int errno = -ENOMEM, ret; 2616c66ac9dbSNicholas Bellinger 261712d23384SNicholas Bellinger ret = mutex_lock_interruptible(&hba->hba_access_mutex); 261812d23384SNicholas Bellinger if (ret) 261912d23384SNicholas Bellinger return ERR_PTR(ret); 2620c66ac9dbSNicholas Bellinger /* 2621c66ac9dbSNicholas Bellinger * Locate the struct se_subsystem_api from parent's struct se_hba. 2622c66ac9dbSNicholas Bellinger */ 2623c66ac9dbSNicholas Bellinger t = hba->transport; 2624c66ac9dbSNicholas Bellinger 26250fd97ccfSChristoph Hellwig dev = target_alloc_device(hba, name); 26260fd97ccfSChristoph Hellwig if (!dev) 26270fd97ccfSChristoph Hellwig goto out_unlock; 2628c66ac9dbSNicholas Bellinger 26290fd97ccfSChristoph Hellwig dev_cg = &dev->dev_group; 2630c66ac9dbSNicholas Bellinger 263113f6a914SSebastian Andrzej Siewior dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, 2632c66ac9dbSNicholas Bellinger GFP_KERNEL); 26336708bb27SAndy Grover if (!dev_cg->default_groups) 26340fd97ccfSChristoph Hellwig goto out_free_device; 2635c66ac9dbSNicholas Bellinger 263673112edcSNicholas Bellinger config_group_init_type_name(dev_cg, name, &t->tb_cits.tb_dev_cit); 26370fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", 2638f79a897eSNicholas Bellinger &t->tb_cits.tb_dev_attrib_cit); 26390fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_pr_group, "pr", 264091e2e39bSNicholas Bellinger &t->tb_cits.tb_dev_pr_cit); 26410fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", 2642f8d389c6SNicholas Bellinger &t->tb_cits.tb_dev_wwn_cit); 26430fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, 264472aca57bSNicholas Bellinger "alua", &t->tb_cits.tb_dev_alua_tg_pt_gps_cit); 26450fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_stat_grps.stat_group, 2646d23ab570SNicholas Bellinger "statistics", &t->tb_cits.tb_dev_stat_cit); 264712d23384SNicholas Bellinger 26480fd97ccfSChristoph Hellwig dev_cg->default_groups[0] = &dev->dev_attrib.da_group; 26490fd97ccfSChristoph Hellwig dev_cg->default_groups[1] = &dev->dev_pr_group; 26500fd97ccfSChristoph Hellwig dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; 26510fd97ccfSChristoph Hellwig dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; 26520fd97ccfSChristoph Hellwig dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; 265312d23384SNicholas Bellinger dev_cg->default_groups[5] = NULL; 2654c66ac9dbSNicholas Bellinger /* 265512d23384SNicholas Bellinger * Add core/$HBA/$DEV/alua/default_tg_pt_gp 2656c66ac9dbSNicholas Bellinger */ 26570fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); 26586708bb27SAndy Grover if (!tg_pt_gp) 26590fd97ccfSChristoph Hellwig goto out_free_dev_cg_default_groups; 26600fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 2661c66ac9dbSNicholas Bellinger 26620fd97ccfSChristoph Hellwig tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 266313f6a914SSebastian Andrzej Siewior tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2664c66ac9dbSNicholas Bellinger GFP_KERNEL); 26656708bb27SAndy Grover if (!tg_pt_gp_cg->default_groups) { 26666708bb27SAndy Grover pr_err("Unable to allocate tg_pt_gp_cg->" 2667c66ac9dbSNicholas Bellinger "default_groups\n"); 26680fd97ccfSChristoph Hellwig goto out_free_tg_pt_gp; 2669c66ac9dbSNicholas Bellinger } 2670c66ac9dbSNicholas Bellinger 2671c66ac9dbSNicholas Bellinger config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 2672c66ac9dbSNicholas Bellinger "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 2673c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; 2674c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[1] = NULL; 267512d23384SNicholas Bellinger /* 267612d23384SNicholas Bellinger * Add core/$HBA/$DEV/statistics/ default groups 267712d23384SNicholas Bellinger */ 26780fd97ccfSChristoph Hellwig dev_stat_grp = &dev->dev_stat_grps.stat_group; 267913f6a914SSebastian Andrzej Siewior dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, 268012d23384SNicholas Bellinger GFP_KERNEL); 268112d23384SNicholas Bellinger if (!dev_stat_grp->default_groups) { 26826708bb27SAndy Grover pr_err("Unable to allocate dev_stat_grp->default_groups\n"); 26830fd97ccfSChristoph Hellwig goto out_free_tg_pt_gp_cg_default_groups; 268412d23384SNicholas Bellinger } 26850fd97ccfSChristoph Hellwig target_stat_setup_dev_default_groups(dev); 2686c66ac9dbSNicholas Bellinger 2687c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 26880fd97ccfSChristoph Hellwig return dev_cg; 26890fd97ccfSChristoph Hellwig 26900fd97ccfSChristoph Hellwig out_free_tg_pt_gp_cg_default_groups: 2691c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 26920fd97ccfSChristoph Hellwig out_free_tg_pt_gp: 26930fd97ccfSChristoph Hellwig core_alua_free_tg_pt_gp(tg_pt_gp); 26940fd97ccfSChristoph Hellwig out_free_dev_cg_default_groups: 2695c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 26960fd97ccfSChristoph Hellwig out_free_device: 26970fd97ccfSChristoph Hellwig target_free_device(dev); 26980fd97ccfSChristoph Hellwig out_unlock: 2699c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 270012d23384SNicholas Bellinger return ERR_PTR(errno); 2701c66ac9dbSNicholas Bellinger } 2702c66ac9dbSNicholas Bellinger 2703c66ac9dbSNicholas Bellinger static void target_core_drop_subdev( 2704c66ac9dbSNicholas Bellinger struct config_group *group, 2705c66ac9dbSNicholas Bellinger struct config_item *item) 2706c66ac9dbSNicholas Bellinger { 27070fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 27080fd97ccfSChristoph Hellwig struct se_device *dev = 27090fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 2710c66ac9dbSNicholas Bellinger struct se_hba *hba; 2711c66ac9dbSNicholas Bellinger struct config_item *df_item; 27120fd97ccfSChristoph Hellwig struct config_group *tg_pt_gp_cg, *dev_stat_grp; 27131f6fe7cbSNicholas Bellinger int i; 2714c66ac9dbSNicholas Bellinger 27150fd97ccfSChristoph Hellwig hba = item_to_hba(&dev->se_hba->hba_group.cg_item); 2716c66ac9dbSNicholas Bellinger 27171f6fe7cbSNicholas Bellinger mutex_lock(&hba->hba_access_mutex); 2718c66ac9dbSNicholas Bellinger 27190fd97ccfSChristoph Hellwig dev_stat_grp = &dev->dev_stat_grps.stat_group; 272012d23384SNicholas Bellinger for (i = 0; dev_stat_grp->default_groups[i]; i++) { 272112d23384SNicholas Bellinger df_item = &dev_stat_grp->default_groups[i]->cg_item; 272212d23384SNicholas Bellinger dev_stat_grp->default_groups[i] = NULL; 272312d23384SNicholas Bellinger config_item_put(df_item); 272412d23384SNicholas Bellinger } 272512d23384SNicholas Bellinger kfree(dev_stat_grp->default_groups); 272612d23384SNicholas Bellinger 27270fd97ccfSChristoph Hellwig tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 2728c66ac9dbSNicholas Bellinger for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { 2729c66ac9dbSNicholas Bellinger df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; 2730c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[i] = NULL; 2731c66ac9dbSNicholas Bellinger config_item_put(df_item); 2732c66ac9dbSNicholas Bellinger } 2733c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 27341f6fe7cbSNicholas Bellinger /* 27351f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 27361f6fe7cbSNicholas Bellinger * directly from target_core_alua_tg_pt_gp_release(). 27371f6fe7cbSNicholas Bellinger */ 27380fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = NULL; 2739c66ac9dbSNicholas Bellinger 2740c66ac9dbSNicholas Bellinger for (i = 0; dev_cg->default_groups[i]; i++) { 2741c66ac9dbSNicholas Bellinger df_item = &dev_cg->default_groups[i]->cg_item; 2742c66ac9dbSNicholas Bellinger dev_cg->default_groups[i] = NULL; 2743c66ac9dbSNicholas Bellinger config_item_put(df_item); 2744c66ac9dbSNicholas Bellinger } 27451f6fe7cbSNicholas Bellinger /* 27460fd97ccfSChristoph Hellwig * se_dev is released from target_core_dev_item_ops->release() 27471f6fe7cbSNicholas Bellinger */ 2748c66ac9dbSNicholas Bellinger config_item_put(item); 2749c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 2750c66ac9dbSNicholas Bellinger } 2751c66ac9dbSNicholas Bellinger 2752c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_hba_group_ops = { 2753c66ac9dbSNicholas Bellinger .make_group = target_core_make_subdev, 2754c66ac9dbSNicholas Bellinger .drop_item = target_core_drop_subdev, 2755c66ac9dbSNicholas Bellinger }; 2756c66ac9dbSNicholas Bellinger 2757c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); 2758c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR(_name, _mode) \ 2759c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2760c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2761c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2762c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name, \ 2763c66ac9dbSNicholas Bellinger target_core_hba_store_attr_##_name); 2764c66ac9dbSNicholas Bellinger 2765c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR_RO(_name) \ 2766c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2767c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2768c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2769c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name); 2770c66ac9dbSNicholas Bellinger 2771c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_info( 2772c66ac9dbSNicholas Bellinger struct se_hba *hba, 2773c66ac9dbSNicholas Bellinger char *page) 2774c66ac9dbSNicholas Bellinger { 2775c66ac9dbSNicholas Bellinger return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 2776c66ac9dbSNicholas Bellinger hba->hba_id, hba->transport->name, 2777c66ac9dbSNicholas Bellinger TARGET_CORE_CONFIGFS_VERSION); 2778c66ac9dbSNicholas Bellinger } 2779c66ac9dbSNicholas Bellinger 2780c66ac9dbSNicholas Bellinger SE_HBA_ATTR_RO(hba_info); 2781c66ac9dbSNicholas Bellinger 2782c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, 2783c66ac9dbSNicholas Bellinger char *page) 2784c66ac9dbSNicholas Bellinger { 2785c66ac9dbSNicholas Bellinger int hba_mode = 0; 2786c66ac9dbSNicholas Bellinger 2787c66ac9dbSNicholas Bellinger if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 2788c66ac9dbSNicholas Bellinger hba_mode = 1; 2789c66ac9dbSNicholas Bellinger 2790c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", hba_mode); 2791c66ac9dbSNicholas Bellinger } 2792c66ac9dbSNicholas Bellinger 2793c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, 2794c66ac9dbSNicholas Bellinger const char *page, size_t count) 2795c66ac9dbSNicholas Bellinger { 2796c66ac9dbSNicholas Bellinger struct se_subsystem_api *transport = hba->transport; 2797c66ac9dbSNicholas Bellinger unsigned long mode_flag; 2798c66ac9dbSNicholas Bellinger int ret; 2799c66ac9dbSNicholas Bellinger 2800c66ac9dbSNicholas Bellinger if (transport->pmode_enable_hba == NULL) 2801c66ac9dbSNicholas Bellinger return -EINVAL; 2802c66ac9dbSNicholas Bellinger 280357103d7fSJingoo Han ret = kstrtoul(page, 0, &mode_flag); 2804c66ac9dbSNicholas Bellinger if (ret < 0) { 28056708bb27SAndy Grover pr_err("Unable to extract hba mode flag: %d\n", ret); 280657103d7fSJingoo Han return ret; 2807c66ac9dbSNicholas Bellinger } 2808c66ac9dbSNicholas Bellinger 28090fd97ccfSChristoph Hellwig if (hba->dev_count) { 28106708bb27SAndy Grover pr_err("Unable to set hba_mode with active devices\n"); 2811c66ac9dbSNicholas Bellinger return -EINVAL; 2812c66ac9dbSNicholas Bellinger } 2813c66ac9dbSNicholas Bellinger 2814c66ac9dbSNicholas Bellinger ret = transport->pmode_enable_hba(hba, mode_flag); 2815c66ac9dbSNicholas Bellinger if (ret < 0) 2816c66ac9dbSNicholas Bellinger return -EINVAL; 2817c66ac9dbSNicholas Bellinger if (ret > 0) 2818c66ac9dbSNicholas Bellinger hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 2819c66ac9dbSNicholas Bellinger else if (ret == 0) 2820c66ac9dbSNicholas Bellinger hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 2821c66ac9dbSNicholas Bellinger 2822c66ac9dbSNicholas Bellinger return count; 2823c66ac9dbSNicholas Bellinger } 2824c66ac9dbSNicholas Bellinger 2825c66ac9dbSNicholas Bellinger SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); 2826c66ac9dbSNicholas Bellinger 2827c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); 2828c66ac9dbSNicholas Bellinger 28291f6fe7cbSNicholas Bellinger static void target_core_hba_release(struct config_item *item) 28301f6fe7cbSNicholas Bellinger { 28311f6fe7cbSNicholas Bellinger struct se_hba *hba = container_of(to_config_group(item), 28321f6fe7cbSNicholas Bellinger struct se_hba, hba_group); 28331f6fe7cbSNicholas Bellinger core_delete_hba(hba); 28341f6fe7cbSNicholas Bellinger } 28351f6fe7cbSNicholas Bellinger 2836c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_hba_attrs[] = { 2837c66ac9dbSNicholas Bellinger &target_core_hba_hba_info.attr, 2838c66ac9dbSNicholas Bellinger &target_core_hba_hba_mode.attr, 2839c66ac9dbSNicholas Bellinger NULL, 2840c66ac9dbSNicholas Bellinger }; 2841c66ac9dbSNicholas Bellinger 2842c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_hba_item_ops = { 28431f6fe7cbSNicholas Bellinger .release = target_core_hba_release, 2844c66ac9dbSNicholas Bellinger .show_attribute = target_core_hba_attr_show, 2845c66ac9dbSNicholas Bellinger .store_attribute = target_core_hba_attr_store, 2846c66ac9dbSNicholas Bellinger }; 2847c66ac9dbSNicholas Bellinger 2848c66ac9dbSNicholas Bellinger static struct config_item_type target_core_hba_cit = { 2849c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_hba_item_ops, 2850c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_hba_group_ops, 2851c66ac9dbSNicholas Bellinger .ct_attrs = target_core_hba_attrs, 2852c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2853c66ac9dbSNicholas Bellinger }; 2854c66ac9dbSNicholas Bellinger 2855c66ac9dbSNicholas Bellinger static struct config_group *target_core_call_addhbatotarget( 2856c66ac9dbSNicholas Bellinger struct config_group *group, 2857c66ac9dbSNicholas Bellinger const char *name) 2858c66ac9dbSNicholas Bellinger { 2859c66ac9dbSNicholas Bellinger char *se_plugin_str, *str, *str2; 2860c66ac9dbSNicholas Bellinger struct se_hba *hba; 2861c66ac9dbSNicholas Bellinger char buf[TARGET_CORE_NAME_MAX_LEN]; 2862c66ac9dbSNicholas Bellinger unsigned long plugin_dep_id = 0; 2863c66ac9dbSNicholas Bellinger int ret; 2864c66ac9dbSNicholas Bellinger 2865c66ac9dbSNicholas Bellinger memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); 286660d645a4SDan Carpenter if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 28676708bb27SAndy Grover pr_err("Passed *name strlen(): %d exceeds" 2868c66ac9dbSNicholas Bellinger " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 2869c66ac9dbSNicholas Bellinger TARGET_CORE_NAME_MAX_LEN); 2870c66ac9dbSNicholas Bellinger return ERR_PTR(-ENAMETOOLONG); 2871c66ac9dbSNicholas Bellinger } 2872c66ac9dbSNicholas Bellinger snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 2873c66ac9dbSNicholas Bellinger 2874c66ac9dbSNicholas Bellinger str = strstr(buf, "_"); 28756708bb27SAndy Grover if (!str) { 28766708bb27SAndy Grover pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 2877c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 2878c66ac9dbSNicholas Bellinger } 2879c66ac9dbSNicholas Bellinger se_plugin_str = buf; 2880c66ac9dbSNicholas Bellinger /* 2881c66ac9dbSNicholas Bellinger * Special case for subsystem plugins that have "_" in their names. 2882c66ac9dbSNicholas Bellinger * Namely rd_direct and rd_mcp.. 2883c66ac9dbSNicholas Bellinger */ 2884c66ac9dbSNicholas Bellinger str2 = strstr(str+1, "_"); 28856708bb27SAndy Grover if (str2) { 2886c66ac9dbSNicholas Bellinger *str2 = '\0'; /* Terminate for *se_plugin_str */ 2887c66ac9dbSNicholas Bellinger str2++; /* Skip to start of plugin dependent ID */ 2888c66ac9dbSNicholas Bellinger str = str2; 2889c66ac9dbSNicholas Bellinger } else { 2890c66ac9dbSNicholas Bellinger *str = '\0'; /* Terminate for *se_plugin_str */ 2891c66ac9dbSNicholas Bellinger str++; /* Skip to start of plugin dependent ID */ 2892c66ac9dbSNicholas Bellinger } 2893c66ac9dbSNicholas Bellinger 289457103d7fSJingoo Han ret = kstrtoul(str, 0, &plugin_dep_id); 2895c66ac9dbSNicholas Bellinger if (ret < 0) { 289657103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2897c66ac9dbSNicholas Bellinger " plugin_dep_id\n", ret); 289857103d7fSJingoo Han return ERR_PTR(ret); 2899c66ac9dbSNicholas Bellinger } 2900c66ac9dbSNicholas Bellinger /* 2901c66ac9dbSNicholas Bellinger * Load up TCM subsystem plugins if they have not already been loaded. 2902c66ac9dbSNicholas Bellinger */ 2903dbc5623eSNicholas Bellinger transport_subsystem_check_init(); 2904c66ac9dbSNicholas Bellinger 2905c66ac9dbSNicholas Bellinger hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 2906c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 2907c66ac9dbSNicholas Bellinger return ERR_CAST(hba); 2908c66ac9dbSNicholas Bellinger 2909c66ac9dbSNicholas Bellinger config_group_init_type_name(&hba->hba_group, name, 2910c66ac9dbSNicholas Bellinger &target_core_hba_cit); 2911c66ac9dbSNicholas Bellinger 2912c66ac9dbSNicholas Bellinger return &hba->hba_group; 2913c66ac9dbSNicholas Bellinger } 2914c66ac9dbSNicholas Bellinger 2915c66ac9dbSNicholas Bellinger static void target_core_call_delhbafromtarget( 2916c66ac9dbSNicholas Bellinger struct config_group *group, 2917c66ac9dbSNicholas Bellinger struct config_item *item) 2918c66ac9dbSNicholas Bellinger { 29191f6fe7cbSNicholas Bellinger /* 29201f6fe7cbSNicholas Bellinger * core_delete_hba() is called from target_core_hba_item_ops->release() 29211f6fe7cbSNicholas Bellinger * -> target_core_hba_release() 29221f6fe7cbSNicholas Bellinger */ 2923c66ac9dbSNicholas Bellinger config_item_put(item); 2924c66ac9dbSNicholas Bellinger } 2925c66ac9dbSNicholas Bellinger 2926c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_group_ops = { 2927c66ac9dbSNicholas Bellinger .make_group = target_core_call_addhbatotarget, 2928c66ac9dbSNicholas Bellinger .drop_item = target_core_call_delhbafromtarget, 2929c66ac9dbSNicholas Bellinger }; 2930c66ac9dbSNicholas Bellinger 2931c66ac9dbSNicholas Bellinger static struct config_item_type target_core_cit = { 2932c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2933c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_group_ops, 2934c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 2935c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2936c66ac9dbSNicholas Bellinger }; 2937c66ac9dbSNicholas Bellinger 2938c66ac9dbSNicholas Bellinger /* Stop functions for struct config_item_type target_core_hba_cit */ 2939c66ac9dbSNicholas Bellinger 294073112edcSNicholas Bellinger void target_core_setup_sub_cits(struct se_subsystem_api *sa) 294173112edcSNicholas Bellinger { 294273112edcSNicholas Bellinger target_core_setup_dev_cit(sa); 2943f79a897eSNicholas Bellinger target_core_setup_dev_attrib_cit(sa); 294491e2e39bSNicholas Bellinger target_core_setup_dev_pr_cit(sa); 2945f8d389c6SNicholas Bellinger target_core_setup_dev_wwn_cit(sa); 294672aca57bSNicholas Bellinger target_core_setup_dev_alua_tg_pt_gps_cit(sa); 2947d23ab570SNicholas Bellinger target_core_setup_dev_stat_cit(sa); 294873112edcSNicholas Bellinger } 294973112edcSNicholas Bellinger EXPORT_SYMBOL(target_core_setup_sub_cits); 295073112edcSNicholas Bellinger 295154550fabSAxel Lin static int __init target_core_init_configfs(void) 2952c66ac9dbSNicholas Bellinger { 2953c66ac9dbSNicholas Bellinger struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; 2954c66ac9dbSNicholas Bellinger struct config_group *lu_gp_cg = NULL; 2955c66ac9dbSNicholas Bellinger struct configfs_subsystem *subsys; 2956c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2957c66ac9dbSNicholas Bellinger int ret; 2958c66ac9dbSNicholas Bellinger 29596708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 2960c66ac9dbSNicholas Bellinger " Engine: %s on %s/%s on "UTS_RELEASE"\n", 2961c66ac9dbSNicholas Bellinger TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 2962c66ac9dbSNicholas Bellinger 2963c66ac9dbSNicholas Bellinger subsys = target_core_subsystem[0]; 2964c66ac9dbSNicholas Bellinger config_group_init(&subsys->su_group); 2965c66ac9dbSNicholas Bellinger mutex_init(&subsys->su_mutex); 2966c66ac9dbSNicholas Bellinger 2967e3d6f909SAndy Grover ret = init_se_kmem_caches(); 2968c66ac9dbSNicholas Bellinger if (ret < 0) 2969e3d6f909SAndy Grover return ret; 2970c66ac9dbSNicholas Bellinger /* 2971c66ac9dbSNicholas Bellinger * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 2972c66ac9dbSNicholas Bellinger * and ALUA Logical Unit Group and Target Port Group infrastructure. 2973c66ac9dbSNicholas Bellinger */ 2974c66ac9dbSNicholas Bellinger target_cg = &subsys->su_group; 2975ab6dae82SAndy Grover target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2976c66ac9dbSNicholas Bellinger GFP_KERNEL); 29776708bb27SAndy Grover if (!target_cg->default_groups) { 29786708bb27SAndy Grover pr_err("Unable to allocate target_cg->default_groups\n"); 297937bb7899SPeter Senna Tschudin ret = -ENOMEM; 2980c66ac9dbSNicholas Bellinger goto out_global; 2981c66ac9dbSNicholas Bellinger } 2982c66ac9dbSNicholas Bellinger 2983e3d6f909SAndy Grover config_group_init_type_name(&target_core_hbagroup, 2984c66ac9dbSNicholas Bellinger "core", &target_core_cit); 2985e3d6f909SAndy Grover target_cg->default_groups[0] = &target_core_hbagroup; 2986c66ac9dbSNicholas Bellinger target_cg->default_groups[1] = NULL; 2987c66ac9dbSNicholas Bellinger /* 2988c66ac9dbSNicholas Bellinger * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 2989c66ac9dbSNicholas Bellinger */ 2990e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 299113f6a914SSebastian Andrzej Siewior hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2992c66ac9dbSNicholas Bellinger GFP_KERNEL); 29936708bb27SAndy Grover if (!hba_cg->default_groups) { 29946708bb27SAndy Grover pr_err("Unable to allocate hba_cg->default_groups\n"); 299537bb7899SPeter Senna Tschudin ret = -ENOMEM; 2996c66ac9dbSNicholas Bellinger goto out_global; 2997c66ac9dbSNicholas Bellinger } 2998e3d6f909SAndy Grover config_group_init_type_name(&alua_group, 2999c66ac9dbSNicholas Bellinger "alua", &target_core_alua_cit); 3000e3d6f909SAndy Grover hba_cg->default_groups[0] = &alua_group; 3001c66ac9dbSNicholas Bellinger hba_cg->default_groups[1] = NULL; 3002c66ac9dbSNicholas Bellinger /* 3003c66ac9dbSNicholas Bellinger * Add ALUA Logical Unit Group and Target Port Group ConfigFS 3004c66ac9dbSNicholas Bellinger * groups under /sys/kernel/config/target/core/alua/ 3005c66ac9dbSNicholas Bellinger */ 3006e3d6f909SAndy Grover alua_cg = &alua_group; 300713f6a914SSebastian Andrzej Siewior alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3008c66ac9dbSNicholas Bellinger GFP_KERNEL); 30096708bb27SAndy Grover if (!alua_cg->default_groups) { 30106708bb27SAndy Grover pr_err("Unable to allocate alua_cg->default_groups\n"); 301137bb7899SPeter Senna Tschudin ret = -ENOMEM; 3012c66ac9dbSNicholas Bellinger goto out_global; 3013c66ac9dbSNicholas Bellinger } 3014c66ac9dbSNicholas Bellinger 3015e3d6f909SAndy Grover config_group_init_type_name(&alua_lu_gps_group, 3016c66ac9dbSNicholas Bellinger "lu_gps", &target_core_alua_lu_gps_cit); 3017e3d6f909SAndy Grover alua_cg->default_groups[0] = &alua_lu_gps_group; 3018c66ac9dbSNicholas Bellinger alua_cg->default_groups[1] = NULL; 3019c66ac9dbSNicholas Bellinger /* 3020c66ac9dbSNicholas Bellinger * Add core/alua/lu_gps/default_lu_gp 3021c66ac9dbSNicholas Bellinger */ 3022c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 302337bb7899SPeter Senna Tschudin if (IS_ERR(lu_gp)) { 302437bb7899SPeter Senna Tschudin ret = -ENOMEM; 3025c66ac9dbSNicholas Bellinger goto out_global; 302637bb7899SPeter Senna Tschudin } 3027c66ac9dbSNicholas Bellinger 3028e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 302913f6a914SSebastian Andrzej Siewior lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 3030c66ac9dbSNicholas Bellinger GFP_KERNEL); 30316708bb27SAndy Grover if (!lu_gp_cg->default_groups) { 30326708bb27SAndy Grover pr_err("Unable to allocate lu_gp_cg->default_groups\n"); 303337bb7899SPeter Senna Tschudin ret = -ENOMEM; 3034c66ac9dbSNicholas Bellinger goto out_global; 3035c66ac9dbSNicholas Bellinger } 3036c66ac9dbSNicholas Bellinger 3037c66ac9dbSNicholas Bellinger config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 3038c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 3039c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; 3040c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[1] = NULL; 3041e3d6f909SAndy Grover default_lu_gp = lu_gp; 3042c66ac9dbSNicholas Bellinger /* 3043c66ac9dbSNicholas Bellinger * Register the target_core_mod subsystem with configfs. 3044c66ac9dbSNicholas Bellinger */ 3045c66ac9dbSNicholas Bellinger ret = configfs_register_subsystem(subsys); 3046c66ac9dbSNicholas Bellinger if (ret < 0) { 30476708bb27SAndy Grover pr_err("Error %d while registering subsystem %s\n", 3048c66ac9dbSNicholas Bellinger ret, subsys->su_group.cg_item.ci_namebuf); 3049c66ac9dbSNicholas Bellinger goto out_global; 3050c66ac9dbSNicholas Bellinger } 30516708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 3052c66ac9dbSNicholas Bellinger " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" 3053c66ac9dbSNicholas Bellinger " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 3054c66ac9dbSNicholas Bellinger /* 3055c66ac9dbSNicholas Bellinger * Register built-in RAMDISK subsystem logic for virtual LUN 0 3056c66ac9dbSNicholas Bellinger */ 3057c66ac9dbSNicholas Bellinger ret = rd_module_init(); 3058c66ac9dbSNicholas Bellinger if (ret < 0) 3059c66ac9dbSNicholas Bellinger goto out; 3060c66ac9dbSNicholas Bellinger 30610d0f9dfbSRoland Dreier ret = core_dev_setup_virtual_lun0(); 30620d0f9dfbSRoland Dreier if (ret < 0) 3063c66ac9dbSNicholas Bellinger goto out; 3064c66ac9dbSNicholas Bellinger 3065f99715acSNicholas Bellinger ret = target_xcopy_setup_pt(); 3066f99715acSNicholas Bellinger if (ret < 0) 3067f99715acSNicholas Bellinger goto out; 3068f99715acSNicholas Bellinger 3069c66ac9dbSNicholas Bellinger return 0; 3070c66ac9dbSNicholas Bellinger 3071c66ac9dbSNicholas Bellinger out: 3072c66ac9dbSNicholas Bellinger configfs_unregister_subsystem(subsys); 3073c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3074c66ac9dbSNicholas Bellinger rd_module_exit(); 3075c66ac9dbSNicholas Bellinger out_global: 3076e3d6f909SAndy Grover if (default_lu_gp) { 3077e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3078e3d6f909SAndy Grover default_lu_gp = NULL; 3079c66ac9dbSNicholas Bellinger } 3080c66ac9dbSNicholas Bellinger if (lu_gp_cg) 3081c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 3082c66ac9dbSNicholas Bellinger if (alua_cg) 3083c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 3084c66ac9dbSNicholas Bellinger if (hba_cg) 3085c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 3086c66ac9dbSNicholas Bellinger kfree(target_cg->default_groups); 3087e3d6f909SAndy Grover release_se_kmem_caches(); 3088e3d6f909SAndy Grover return ret; 3089c66ac9dbSNicholas Bellinger } 3090c66ac9dbSNicholas Bellinger 309154550fabSAxel Lin static void __exit target_core_exit_configfs(void) 3092c66ac9dbSNicholas Bellinger { 3093c66ac9dbSNicholas Bellinger struct configfs_subsystem *subsys; 3094c66ac9dbSNicholas Bellinger struct config_group *hba_cg, *alua_cg, *lu_gp_cg; 3095c66ac9dbSNicholas Bellinger struct config_item *item; 3096c66ac9dbSNicholas Bellinger int i; 3097c66ac9dbSNicholas Bellinger 3098c66ac9dbSNicholas Bellinger subsys = target_core_subsystem[0]; 3099c66ac9dbSNicholas Bellinger 3100e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 3101c66ac9dbSNicholas Bellinger for (i = 0; lu_gp_cg->default_groups[i]; i++) { 3102c66ac9dbSNicholas Bellinger item = &lu_gp_cg->default_groups[i]->cg_item; 3103c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[i] = NULL; 3104c66ac9dbSNicholas Bellinger config_item_put(item); 3105c66ac9dbSNicholas Bellinger } 3106c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 31077c2bf6e9SNicholas Bellinger lu_gp_cg->default_groups = NULL; 3108c66ac9dbSNicholas Bellinger 3109e3d6f909SAndy Grover alua_cg = &alua_group; 3110c66ac9dbSNicholas Bellinger for (i = 0; alua_cg->default_groups[i]; i++) { 3111c66ac9dbSNicholas Bellinger item = &alua_cg->default_groups[i]->cg_item; 3112c66ac9dbSNicholas Bellinger alua_cg->default_groups[i] = NULL; 3113c66ac9dbSNicholas Bellinger config_item_put(item); 3114c66ac9dbSNicholas Bellinger } 3115c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 31167c2bf6e9SNicholas Bellinger alua_cg->default_groups = NULL; 3117c66ac9dbSNicholas Bellinger 3118e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 3119c66ac9dbSNicholas Bellinger for (i = 0; hba_cg->default_groups[i]; i++) { 3120c66ac9dbSNicholas Bellinger item = &hba_cg->default_groups[i]->cg_item; 3121c66ac9dbSNicholas Bellinger hba_cg->default_groups[i] = NULL; 3122c66ac9dbSNicholas Bellinger config_item_put(item); 3123c66ac9dbSNicholas Bellinger } 3124c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 31257c2bf6e9SNicholas Bellinger hba_cg->default_groups = NULL; 31267c2bf6e9SNicholas Bellinger /* 31277c2bf6e9SNicholas Bellinger * We expect subsys->su_group.default_groups to be released 31287c2bf6e9SNicholas Bellinger * by configfs subsystem provider logic.. 31297c2bf6e9SNicholas Bellinger */ 31307c2bf6e9SNicholas Bellinger configfs_unregister_subsystem(subsys); 3131c66ac9dbSNicholas Bellinger kfree(subsys->su_group.default_groups); 3132c66ac9dbSNicholas Bellinger 3133e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3134e3d6f909SAndy Grover default_lu_gp = NULL; 31357c2bf6e9SNicholas Bellinger 31366708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3137c66ac9dbSNicholas Bellinger " Infrastructure\n"); 3138c66ac9dbSNicholas Bellinger 3139c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3140c66ac9dbSNicholas Bellinger rd_module_exit(); 3141f99715acSNicholas Bellinger target_xcopy_release_pt(); 3142e3d6f909SAndy Grover release_se_kmem_caches(); 3143c66ac9dbSNicholas Bellinger } 3144c66ac9dbSNicholas Bellinger 3145c66ac9dbSNicholas Bellinger MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3146c66ac9dbSNicholas Bellinger MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3147c66ac9dbSNicholas Bellinger MODULE_LICENSE("GPL"); 3148c66ac9dbSNicholas Bellinger 3149c66ac9dbSNicholas Bellinger module_init(target_core_init_configfs); 3150c66ac9dbSNicholas Bellinger module_exit(target_core_exit_configfs); 3151