1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 2c66ac9dbSNicholas Bellinger /******************************************************************************* 3c66ac9dbSNicholas Bellinger * Filename: target_core_configfs.c 4c66ac9dbSNicholas Bellinger * 5c66ac9dbSNicholas Bellinger * This file contains ConfigFS logic for the Generic Target Engine project. 6c66ac9dbSNicholas Bellinger * 74c76251eSNicholas Bellinger * (c) Copyright 2008-2013 Datera, Inc. 8c66ac9dbSNicholas Bellinger * 9c66ac9dbSNicholas Bellinger * Nicholas A. Bellinger <nab@kernel.org> 10c66ac9dbSNicholas Bellinger * 11c66ac9dbSNicholas Bellinger * based on configfs Copyright (C) 2005 Oracle. All rights reserved. 12c66ac9dbSNicholas Bellinger * 13c66ac9dbSNicholas Bellinger ****************************************************************************/ 14c66ac9dbSNicholas Bellinger 15c66ac9dbSNicholas Bellinger #include <linux/module.h> 16c66ac9dbSNicholas Bellinger #include <linux/moduleparam.h> 17c66ac9dbSNicholas Bellinger #include <generated/utsrelease.h> 18c66ac9dbSNicholas Bellinger #include <linux/utsname.h> 19c66ac9dbSNicholas Bellinger #include <linux/init.h> 20c66ac9dbSNicholas Bellinger #include <linux/fs.h> 21c66ac9dbSNicholas Bellinger #include <linux/namei.h> 22c66ac9dbSNicholas Bellinger #include <linux/slab.h> 23c66ac9dbSNicholas Bellinger #include <linux/types.h> 24c66ac9dbSNicholas Bellinger #include <linux/delay.h> 25c66ac9dbSNicholas Bellinger #include <linux/unistd.h> 26c66ac9dbSNicholas Bellinger #include <linux/string.h> 27c66ac9dbSNicholas Bellinger #include <linux/parser.h> 28c66ac9dbSNicholas Bellinger #include <linux/syscalls.h> 29c66ac9dbSNicholas Bellinger #include <linux/configfs.h> 30e3d6f909SAndy Grover #include <linux/spinlock.h> 31c66ac9dbSNicholas Bellinger 32c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 33c4795fb2SChristoph Hellwig #include <target/target_core_backend.h> 34c4795fb2SChristoph Hellwig #include <target/target_core_fabric.h> 35c66ac9dbSNicholas Bellinger 36e26d99aeSChristoph Hellwig #include "target_core_internal.h" 37c66ac9dbSNicholas Bellinger #include "target_core_alua.h" 38c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 39c66ac9dbSNicholas Bellinger #include "target_core_rd.h" 40f99715acSNicholas Bellinger #include "target_core_xcopy.h" 41c66ac9dbSNicholas Bellinger 4273112edcSNicholas Bellinger #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ 430a06d430SChristoph Hellwig static void target_core_setup_##_name##_cit(struct target_backend *tb) \ 4473112edcSNicholas Bellinger { \ 450a06d430SChristoph Hellwig struct config_item_type *cit = &tb->tb_##_name##_cit; \ 4673112edcSNicholas Bellinger \ 4773112edcSNicholas Bellinger cit->ct_item_ops = _item_ops; \ 4873112edcSNicholas Bellinger cit->ct_group_ops = _group_ops; \ 4973112edcSNicholas Bellinger cit->ct_attrs = _attrs; \ 500a06d430SChristoph Hellwig cit->ct_owner = tb->ops->owner; \ 510a06d430SChristoph Hellwig pr_debug("Setup generic %s\n", __stringify(_name)); \ 520a06d430SChristoph Hellwig } 530a06d430SChristoph Hellwig 540a06d430SChristoph Hellwig #define TB_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \ 550a06d430SChristoph Hellwig static void target_core_setup_##_name##_cit(struct target_backend *tb) \ 560a06d430SChristoph Hellwig { \ 570a06d430SChristoph Hellwig struct config_item_type *cit = &tb->tb_##_name##_cit; \ 580a06d430SChristoph Hellwig \ 590a06d430SChristoph Hellwig cit->ct_item_ops = _item_ops; \ 600a06d430SChristoph Hellwig cit->ct_group_ops = _group_ops; \ 610a06d430SChristoph Hellwig cit->ct_attrs = tb->ops->tb_##_name##_attrs; \ 620a06d430SChristoph Hellwig cit->ct_owner = tb->ops->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 71e3d6f909SAndy Grover static struct config_group target_core_hbagroup; 72e3d6f909SAndy Grover static struct config_group alua_group; 73e3d6f909SAndy Grover static struct config_group alua_lu_gps_group; 74e3d6f909SAndy Grover 75c66ac9dbSNicholas Bellinger static inline struct se_hba * 76c66ac9dbSNicholas Bellinger item_to_hba(struct config_item *item) 77c66ac9dbSNicholas Bellinger { 78c66ac9dbSNicholas Bellinger return container_of(to_config_group(item), struct se_hba, hba_group); 79c66ac9dbSNicholas Bellinger } 80c66ac9dbSNicholas Bellinger 81c66ac9dbSNicholas Bellinger /* 82c66ac9dbSNicholas Bellinger * Attributes for /sys/kernel/config/target/ 83c66ac9dbSNicholas Bellinger */ 842eafd729SChristoph Hellwig static ssize_t target_core_item_version_show(struct config_item *item, 85c66ac9dbSNicholas Bellinger char *page) 86c66ac9dbSNicholas Bellinger { 87c66ac9dbSNicholas Bellinger return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" 88ce8dd25dSChristoph Hellwig " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_VERSION, 89c66ac9dbSNicholas Bellinger utsname()->sysname, utsname()->machine); 90c66ac9dbSNicholas Bellinger } 91c66ac9dbSNicholas Bellinger 922eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_core_item_, version); 93c66ac9dbSNicholas Bellinger 94a96e9783SLee Duncan char db_root[DB_ROOT_LEN] = DB_ROOT_DEFAULT; 95a96e9783SLee Duncan static char db_root_stage[DB_ROOT_LEN]; 96a96e9783SLee Duncan 97a96e9783SLee Duncan static ssize_t target_core_item_dbroot_show(struct config_item *item, 98a96e9783SLee Duncan char *page) 99a96e9783SLee Duncan { 100a96e9783SLee Duncan return sprintf(page, "%s\n", db_root); 101a96e9783SLee Duncan } 102a96e9783SLee Duncan 103a96e9783SLee Duncan static ssize_t target_core_item_dbroot_store(struct config_item *item, 104a96e9783SLee Duncan const char *page, size_t count) 105a96e9783SLee Duncan { 106a96e9783SLee Duncan ssize_t read_bytes; 107a96e9783SLee Duncan struct file *fp; 108a96e9783SLee Duncan 109a96e9783SLee Duncan mutex_lock(&g_tf_lock); 110a96e9783SLee Duncan if (!list_empty(&g_tf_list)) { 111a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 112a96e9783SLee Duncan pr_err("db_root: cannot be changed: target drivers registered"); 113a96e9783SLee Duncan return -EINVAL; 114a96e9783SLee Duncan } 115a96e9783SLee Duncan 116a96e9783SLee Duncan if (count > (DB_ROOT_LEN - 1)) { 117a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 118a96e9783SLee Duncan pr_err("db_root: count %d exceeds DB_ROOT_LEN-1: %u\n", 119a96e9783SLee Duncan (int)count, DB_ROOT_LEN - 1); 120a96e9783SLee Duncan return -EINVAL; 121a96e9783SLee Duncan } 122a96e9783SLee Duncan 123a96e9783SLee Duncan read_bytes = snprintf(db_root_stage, DB_ROOT_LEN, "%s", page); 124a96e9783SLee Duncan if (!read_bytes) { 125a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 126a96e9783SLee Duncan return -EINVAL; 127a96e9783SLee Duncan } 128a96e9783SLee Duncan if (db_root_stage[read_bytes - 1] == '\n') 129a96e9783SLee Duncan db_root_stage[read_bytes - 1] = '\0'; 130a96e9783SLee Duncan 131a96e9783SLee Duncan /* validate new db root before accepting it */ 132a96e9783SLee Duncan fp = filp_open(db_root_stage, O_RDONLY, 0); 133a96e9783SLee Duncan if (IS_ERR(fp)) { 134a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 135a96e9783SLee Duncan pr_err("db_root: cannot open: %s\n", db_root_stage); 136a96e9783SLee Duncan return -EINVAL; 137a96e9783SLee Duncan } 13845063097SAl Viro if (!S_ISDIR(file_inode(fp)->i_mode)) { 1398cc3bb07SBart Van Assche filp_close(fp, NULL); 140a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 141a96e9783SLee Duncan pr_err("db_root: not a directory: %s\n", db_root_stage); 142a96e9783SLee Duncan return -EINVAL; 143a96e9783SLee Duncan } 1448cc3bb07SBart Van Assche filp_close(fp, NULL); 145a96e9783SLee Duncan 146a96e9783SLee Duncan strncpy(db_root, db_root_stage, read_bytes); 147a96e9783SLee Duncan 148a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 149a96e9783SLee Duncan 15078a6295cSLee Duncan pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); 15178a6295cSLee Duncan 152a96e9783SLee Duncan return read_bytes; 153a96e9783SLee Duncan } 154a96e9783SLee Duncan 155a96e9783SLee Duncan CONFIGFS_ATTR(target_core_item_, dbroot); 156a96e9783SLee Duncan 157c66ac9dbSNicholas Bellinger static struct target_fabric_configfs *target_core_get_fabric( 158c66ac9dbSNicholas Bellinger const char *name) 159c66ac9dbSNicholas Bellinger { 160c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 161c66ac9dbSNicholas Bellinger 1626708bb27SAndy Grover if (!name) 163c66ac9dbSNicholas Bellinger return NULL; 164c66ac9dbSNicholas Bellinger 165c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 166c66ac9dbSNicholas Bellinger list_for_each_entry(tf, &g_tf_list, tf_list) { 16759a206b4SDavid Disseldorp const char *cmp_name = tf->tf_ops->fabric_alias; 16859a206b4SDavid Disseldorp if (!cmp_name) 16959a206b4SDavid Disseldorp cmp_name = tf->tf_ops->fabric_name; 17059a206b4SDavid Disseldorp if (!strcmp(cmp_name, name)) { 171c66ac9dbSNicholas Bellinger atomic_inc(&tf->tf_access_cnt); 172c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 173c66ac9dbSNicholas Bellinger return tf; 174c66ac9dbSNicholas Bellinger } 175c66ac9dbSNicholas Bellinger } 176c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 177c66ac9dbSNicholas Bellinger 178c66ac9dbSNicholas Bellinger return NULL; 179c66ac9dbSNicholas Bellinger } 180c66ac9dbSNicholas Bellinger 181c66ac9dbSNicholas Bellinger /* 182c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->make_group() 183c66ac9dbSNicholas Bellinger */ 184c66ac9dbSNicholas Bellinger static struct config_group *target_core_register_fabric( 185c66ac9dbSNicholas Bellinger struct config_group *group, 186c66ac9dbSNicholas Bellinger const char *name) 187c66ac9dbSNicholas Bellinger { 188c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 189c66ac9dbSNicholas Bellinger int ret; 190c66ac9dbSNicholas Bellinger 1916708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" 192c66ac9dbSNicholas Bellinger " %s\n", group, name); 193e7b7af6eSRoland Dreier 194e7b7af6eSRoland Dreier tf = target_core_get_fabric(name); 195e7b7af6eSRoland Dreier if (!tf) { 19662554910SNicholas Bellinger pr_debug("target_core_register_fabric() trying autoload for %s\n", 197e7b7af6eSRoland Dreier name); 198e7b7af6eSRoland Dreier 199c66ac9dbSNicholas Bellinger /* 200c66ac9dbSNicholas Bellinger * Below are some hardcoded request_module() calls to automatically 201c66ac9dbSNicholas Bellinger * local fabric modules when the following is called: 202c66ac9dbSNicholas Bellinger * 203c66ac9dbSNicholas Bellinger * mkdir -p /sys/kernel/config/target/$MODULE_NAME 204c66ac9dbSNicholas Bellinger * 205c66ac9dbSNicholas Bellinger * Note that this does not limit which TCM fabric module can be 206c66ac9dbSNicholas Bellinger * registered, but simply provids auto loading logic for modules with 207c66ac9dbSNicholas Bellinger * mkdir(2) system calls with known TCM fabric modules. 208c66ac9dbSNicholas Bellinger */ 209e7b7af6eSRoland Dreier 2106708bb27SAndy Grover if (!strncmp(name, "iscsi", 5)) { 211c66ac9dbSNicholas Bellinger /* 212c66ac9dbSNicholas Bellinger * Automatically load the LIO Target fabric module when the 213c66ac9dbSNicholas Bellinger * following is called: 214c66ac9dbSNicholas Bellinger * 215c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/iscsi 216c66ac9dbSNicholas Bellinger */ 217c66ac9dbSNicholas Bellinger ret = request_module("iscsi_target_mod"); 218c66ac9dbSNicholas Bellinger if (ret < 0) { 21962554910SNicholas Bellinger pr_debug("request_module() failed for" 220c66ac9dbSNicholas Bellinger " iscsi_target_mod.ko: %d\n", ret); 221c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 222c66ac9dbSNicholas Bellinger } 2236708bb27SAndy Grover } else if (!strncmp(name, "loopback", 8)) { 224c66ac9dbSNicholas Bellinger /* 225c66ac9dbSNicholas Bellinger * Automatically load the tcm_loop fabric module when the 226c66ac9dbSNicholas Bellinger * following is called: 227c66ac9dbSNicholas Bellinger * 228c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/loopback 229c66ac9dbSNicholas Bellinger */ 230c66ac9dbSNicholas Bellinger ret = request_module("tcm_loop"); 231c66ac9dbSNicholas Bellinger if (ret < 0) { 23262554910SNicholas Bellinger pr_debug("request_module() failed for" 233c66ac9dbSNicholas Bellinger " tcm_loop.ko: %d\n", ret); 234c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 235c66ac9dbSNicholas Bellinger } 236c66ac9dbSNicholas Bellinger } 237c66ac9dbSNicholas Bellinger 238c66ac9dbSNicholas Bellinger tf = target_core_get_fabric(name); 239e7b7af6eSRoland Dreier } 240e7b7af6eSRoland Dreier 2416708bb27SAndy Grover if (!tf) { 24262554910SNicholas Bellinger pr_debug("target_core_get_fabric() failed for %s\n", 243c66ac9dbSNicholas Bellinger name); 244c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 245c66ac9dbSNicholas Bellinger } 2466708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" 24759a206b4SDavid Disseldorp " %s\n", tf->tf_ops->fabric_name); 248c66ac9dbSNicholas Bellinger /* 249c66ac9dbSNicholas Bellinger * On a successful target_core_get_fabric() look, the returned 250c66ac9dbSNicholas Bellinger * struct target_fabric_configfs *tf will contain a usage reference. 251c66ac9dbSNicholas Bellinger */ 2526708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", 253968ebe75SChristoph Hellwig &tf->tf_wwn_cit); 254c66ac9dbSNicholas Bellinger 255968ebe75SChristoph Hellwig config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit); 2561ae1602dSChristoph Hellwig 257c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 258968ebe75SChristoph Hellwig &tf->tf_discovery_cit); 2591ae1602dSChristoph Hellwig configfs_add_default_group(&tf->tf_disc_group, &tf->tf_group); 260c66ac9dbSNicholas Bellinger 2616f3bf5a2SBart Van Assche pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric: %s\n", 2626f3bf5a2SBart Van Assche config_item_name(&tf->tf_group.cg_item)); 263c66ac9dbSNicholas Bellinger return &tf->tf_group; 264c66ac9dbSNicholas Bellinger } 265c66ac9dbSNicholas Bellinger 266c66ac9dbSNicholas Bellinger /* 267c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->drop_item() 268c66ac9dbSNicholas Bellinger */ 269c66ac9dbSNicholas Bellinger static void target_core_deregister_fabric( 270c66ac9dbSNicholas Bellinger struct config_group *group, 271c66ac9dbSNicholas Bellinger struct config_item *item) 272c66ac9dbSNicholas Bellinger { 273c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf = container_of( 274c66ac9dbSNicholas Bellinger to_config_group(item), struct target_fabric_configfs, tf_group); 275c66ac9dbSNicholas Bellinger 2766708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" 277c66ac9dbSNicholas Bellinger " tf list\n", config_item_name(item)); 278c66ac9dbSNicholas Bellinger 2796708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" 28059a206b4SDavid Disseldorp " %s\n", tf->tf_ops->fabric_name); 281c66ac9dbSNicholas Bellinger atomic_dec(&tf->tf_access_cnt); 282c66ac9dbSNicholas Bellinger 2836708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" 284c66ac9dbSNicholas Bellinger " %s\n", config_item_name(item)); 285c66ac9dbSNicholas Bellinger 2861ae1602dSChristoph Hellwig configfs_remove_default_groups(&tf->tf_group); 287c66ac9dbSNicholas Bellinger config_item_put(item); 288c66ac9dbSNicholas Bellinger } 289c66ac9dbSNicholas Bellinger 290c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_fabric_group_ops = { 291c66ac9dbSNicholas Bellinger .make_group = &target_core_register_fabric, 292c66ac9dbSNicholas Bellinger .drop_item = &target_core_deregister_fabric, 293c66ac9dbSNicholas Bellinger }; 294c66ac9dbSNicholas Bellinger 295c66ac9dbSNicholas Bellinger /* 296c66ac9dbSNicholas Bellinger * All item attributes appearing in /sys/kernel/target/ appear here. 297c66ac9dbSNicholas Bellinger */ 298c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_fabric_item_attrs[] = { 299c66ac9dbSNicholas Bellinger &target_core_item_attr_version, 300a96e9783SLee Duncan &target_core_item_attr_dbroot, 301c66ac9dbSNicholas Bellinger NULL, 302c66ac9dbSNicholas Bellinger }; 303c66ac9dbSNicholas Bellinger 304c66ac9dbSNicholas Bellinger /* 305c66ac9dbSNicholas Bellinger * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ 306c66ac9dbSNicholas Bellinger */ 307ece550b5SBhumika Goyal static const struct config_item_type target_core_fabrics_item = { 308c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_fabric_group_ops, 309c66ac9dbSNicholas Bellinger .ct_attrs = target_core_fabric_item_attrs, 310c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 311c66ac9dbSNicholas Bellinger }; 312c66ac9dbSNicholas Bellinger 313c66ac9dbSNicholas Bellinger static struct configfs_subsystem target_core_fabrics = { 314c66ac9dbSNicholas Bellinger .su_group = { 315c66ac9dbSNicholas Bellinger .cg_item = { 316c66ac9dbSNicholas Bellinger .ci_namebuf = "target", 317c66ac9dbSNicholas Bellinger .ci_type = &target_core_fabrics_item, 318c66ac9dbSNicholas Bellinger }, 319c66ac9dbSNicholas Bellinger }, 320c66ac9dbSNicholas Bellinger }; 321c66ac9dbSNicholas Bellinger 322d588cf8fSChristoph Hellwig int target_depend_item(struct config_item *item) 323d588cf8fSChristoph Hellwig { 324d588cf8fSChristoph Hellwig return configfs_depend_item(&target_core_fabrics, item); 325d588cf8fSChristoph Hellwig } 326d588cf8fSChristoph Hellwig EXPORT_SYMBOL(target_depend_item); 327d588cf8fSChristoph Hellwig 328d588cf8fSChristoph Hellwig void target_undepend_item(struct config_item *item) 329d588cf8fSChristoph Hellwig { 3309a9e3415SKrzysztof Opasiak return configfs_undepend_item(item); 331d588cf8fSChristoph Hellwig } 332d588cf8fSChristoph Hellwig EXPORT_SYMBOL(target_undepend_item); 333c66ac9dbSNicholas Bellinger 334c66ac9dbSNicholas Bellinger /*############################################################################## 335c66ac9dbSNicholas Bellinger // Start functions called by external Target Fabrics Modules 336c66ac9dbSNicholas Bellinger //############################################################################*/ 337c66ac9dbSNicholas Bellinger 3389ac8928eSChristoph Hellwig static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) 339c66ac9dbSNicholas Bellinger { 34059a206b4SDavid Disseldorp if (tfo->fabric_alias) { 34159a206b4SDavid Disseldorp if (strlen(tfo->fabric_alias) >= TARGET_FABRIC_NAME_SIZE) { 34259a206b4SDavid Disseldorp pr_err("Passed alias: %s exceeds " 34359a206b4SDavid Disseldorp "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_alias); 3449ac8928eSChristoph Hellwig return -EINVAL; 345c66ac9dbSNicholas Bellinger } 346c66ac9dbSNicholas Bellinger } 34730c7ca93SDavid Disseldorp if (!tfo->fabric_name) { 34830c7ca93SDavid Disseldorp pr_err("Missing tfo->fabric_name\n"); 349c66ac9dbSNicholas Bellinger return -EINVAL; 350c66ac9dbSNicholas Bellinger } 35159a206b4SDavid Disseldorp if (strlen(tfo->fabric_name) >= TARGET_FABRIC_NAME_SIZE) { 35259a206b4SDavid Disseldorp pr_err("Passed name: %s exceeds " 35359a206b4SDavid Disseldorp "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_name); 35459a206b4SDavid Disseldorp return -EINVAL; 35559a206b4SDavid Disseldorp } 3566708bb27SAndy Grover if (!tfo->tpg_get_wwn) { 3576708bb27SAndy Grover pr_err("Missing tfo->tpg_get_wwn()\n"); 358c66ac9dbSNicholas Bellinger return -EINVAL; 359c66ac9dbSNicholas Bellinger } 3606708bb27SAndy Grover if (!tfo->tpg_get_tag) { 3616708bb27SAndy Grover pr_err("Missing tfo->tpg_get_tag()\n"); 362c66ac9dbSNicholas Bellinger return -EINVAL; 363c66ac9dbSNicholas Bellinger } 3646708bb27SAndy Grover if (!tfo->tpg_check_demo_mode) { 3656708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode()\n"); 366c66ac9dbSNicholas Bellinger return -EINVAL; 367c66ac9dbSNicholas Bellinger } 3686708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_cache) { 3696708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); 370c66ac9dbSNicholas Bellinger return -EINVAL; 371c66ac9dbSNicholas Bellinger } 3726708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_write_protect) { 3736708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); 374c66ac9dbSNicholas Bellinger return -EINVAL; 375c66ac9dbSNicholas Bellinger } 3766708bb27SAndy Grover if (!tfo->tpg_check_prod_mode_write_protect) { 3776708bb27SAndy Grover pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); 378c66ac9dbSNicholas Bellinger return -EINVAL; 379c66ac9dbSNicholas Bellinger } 3806708bb27SAndy Grover if (!tfo->tpg_get_inst_index) { 3816708bb27SAndy Grover pr_err("Missing tfo->tpg_get_inst_index()\n"); 382c66ac9dbSNicholas Bellinger return -EINVAL; 383c66ac9dbSNicholas Bellinger } 38435462975SChristoph Hellwig if (!tfo->release_cmd) { 3856708bb27SAndy Grover pr_err("Missing tfo->release_cmd()\n"); 386c66ac9dbSNicholas Bellinger return -EINVAL; 387c66ac9dbSNicholas Bellinger } 3886708bb27SAndy Grover if (!tfo->sess_get_index) { 3896708bb27SAndy Grover pr_err("Missing tfo->sess_get_index()\n"); 390c66ac9dbSNicholas Bellinger return -EINVAL; 391c66ac9dbSNicholas Bellinger } 3926708bb27SAndy Grover if (!tfo->write_pending) { 3936708bb27SAndy Grover pr_err("Missing tfo->write_pending()\n"); 394c66ac9dbSNicholas Bellinger return -EINVAL; 395c66ac9dbSNicholas Bellinger } 3966708bb27SAndy Grover if (!tfo->set_default_node_attributes) { 3976708bb27SAndy Grover pr_err("Missing tfo->set_default_node_attributes()\n"); 398c66ac9dbSNicholas Bellinger return -EINVAL; 399c66ac9dbSNicholas Bellinger } 4006708bb27SAndy Grover if (!tfo->get_cmd_state) { 4016708bb27SAndy Grover pr_err("Missing tfo->get_cmd_state()\n"); 402c66ac9dbSNicholas Bellinger return -EINVAL; 403c66ac9dbSNicholas Bellinger } 4046708bb27SAndy Grover if (!tfo->queue_data_in) { 4056708bb27SAndy Grover pr_err("Missing tfo->queue_data_in()\n"); 406c66ac9dbSNicholas Bellinger return -EINVAL; 407c66ac9dbSNicholas Bellinger } 4086708bb27SAndy Grover if (!tfo->queue_status) { 4096708bb27SAndy Grover pr_err("Missing tfo->queue_status()\n"); 410c66ac9dbSNicholas Bellinger return -EINVAL; 411c66ac9dbSNicholas Bellinger } 4126708bb27SAndy Grover if (!tfo->queue_tm_rsp) { 4136708bb27SAndy Grover pr_err("Missing tfo->queue_tm_rsp()\n"); 414c66ac9dbSNicholas Bellinger return -EINVAL; 415c66ac9dbSNicholas Bellinger } 416131e6abcSNicholas Bellinger if (!tfo->aborted_task) { 417131e6abcSNicholas Bellinger pr_err("Missing tfo->aborted_task()\n"); 418131e6abcSNicholas Bellinger return -EINVAL; 419131e6abcSNicholas Bellinger } 4209c28ca4fSNicholas Bellinger if (!tfo->check_stop_free) { 4219c28ca4fSNicholas Bellinger pr_err("Missing tfo->check_stop_free()\n"); 4229c28ca4fSNicholas Bellinger return -EINVAL; 4239c28ca4fSNicholas Bellinger } 424c66ac9dbSNicholas Bellinger /* 425c66ac9dbSNicholas Bellinger * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 426c66ac9dbSNicholas Bellinger * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 427c66ac9dbSNicholas Bellinger * target_core_fabric_configfs.c WWN+TPG group context code. 428c66ac9dbSNicholas Bellinger */ 4296708bb27SAndy Grover if (!tfo->fabric_make_wwn) { 4306708bb27SAndy Grover pr_err("Missing tfo->fabric_make_wwn()\n"); 431c66ac9dbSNicholas Bellinger return -EINVAL; 432c66ac9dbSNicholas Bellinger } 4336708bb27SAndy Grover if (!tfo->fabric_drop_wwn) { 4346708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_wwn()\n"); 435c66ac9dbSNicholas Bellinger return -EINVAL; 436c66ac9dbSNicholas Bellinger } 4376708bb27SAndy Grover if (!tfo->fabric_make_tpg) { 4386708bb27SAndy Grover pr_err("Missing tfo->fabric_make_tpg()\n"); 439c66ac9dbSNicholas Bellinger return -EINVAL; 440c66ac9dbSNicholas Bellinger } 4416708bb27SAndy Grover if (!tfo->fabric_drop_tpg) { 4426708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_tpg()\n"); 443c66ac9dbSNicholas Bellinger return -EINVAL; 444c66ac9dbSNicholas Bellinger } 445c66ac9dbSNicholas Bellinger 446c66ac9dbSNicholas Bellinger return 0; 447c66ac9dbSNicholas Bellinger } 448c66ac9dbSNicholas Bellinger 4499ac8928eSChristoph Hellwig int target_register_template(const struct target_core_fabric_ops *fo) 450c66ac9dbSNicholas Bellinger { 4519ac8928eSChristoph Hellwig struct target_fabric_configfs *tf; 452c66ac9dbSNicholas Bellinger int ret; 453c66ac9dbSNicholas Bellinger 4549ac8928eSChristoph Hellwig ret = target_fabric_tf_ops_check(fo); 4559ac8928eSChristoph Hellwig if (ret) 456c66ac9dbSNicholas Bellinger return ret; 457c66ac9dbSNicholas Bellinger 4589ac8928eSChristoph Hellwig tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); 4599ac8928eSChristoph Hellwig if (!tf) { 4609ac8928eSChristoph Hellwig pr_err("%s: could not allocate memory!\n", __func__); 4619ac8928eSChristoph Hellwig return -ENOMEM; 4629ac8928eSChristoph Hellwig } 4639ac8928eSChristoph Hellwig 4649ac8928eSChristoph Hellwig INIT_LIST_HEAD(&tf->tf_list); 4659ac8928eSChristoph Hellwig atomic_set(&tf->tf_access_cnt, 0); 466ef0caf8dSChristoph Hellwig tf->tf_ops = fo; 4679ac8928eSChristoph Hellwig target_fabric_setup_cits(tf); 4689ac8928eSChristoph Hellwig 4699ac8928eSChristoph Hellwig mutex_lock(&g_tf_lock); 4709ac8928eSChristoph Hellwig list_add_tail(&tf->tf_list, &g_tf_list); 4719ac8928eSChristoph Hellwig mutex_unlock(&g_tf_lock); 4729ac8928eSChristoph Hellwig 473c66ac9dbSNicholas Bellinger return 0; 474c66ac9dbSNicholas Bellinger } 4759ac8928eSChristoph Hellwig EXPORT_SYMBOL(target_register_template); 476c66ac9dbSNicholas Bellinger 4779ac8928eSChristoph Hellwig void target_unregister_template(const struct target_core_fabric_ops *fo) 478c66ac9dbSNicholas Bellinger { 4799ac8928eSChristoph Hellwig struct target_fabric_configfs *t; 480c66ac9dbSNicholas Bellinger 481c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 4829ac8928eSChristoph Hellwig list_for_each_entry(t, &g_tf_list, tf_list) { 48359a206b4SDavid Disseldorp if (!strcmp(t->tf_ops->fabric_name, fo->fabric_name)) { 4849ac8928eSChristoph Hellwig BUG_ON(atomic_read(&t->tf_access_cnt)); 4859ac8928eSChristoph Hellwig list_del(&t->tf_list); 48694509182SNicholas Bellinger mutex_unlock(&g_tf_lock); 48794509182SNicholas Bellinger /* 48894509182SNicholas Bellinger * Wait for any outstanding fabric se_deve_entry->rcu_head 48994509182SNicholas Bellinger * callbacks to complete post kfree_rcu(), before allowing 49094509182SNicholas Bellinger * fabric driver unload of TFO->module to proceed. 49194509182SNicholas Bellinger */ 49294509182SNicholas Bellinger rcu_barrier(); 4939ac8928eSChristoph Hellwig kfree(t); 49494509182SNicholas Bellinger return; 495c66ac9dbSNicholas Bellinger } 496c66ac9dbSNicholas Bellinger } 4979ac8928eSChristoph Hellwig mutex_unlock(&g_tf_lock); 4989ac8928eSChristoph Hellwig } 4999ac8928eSChristoph Hellwig EXPORT_SYMBOL(target_unregister_template); 500c66ac9dbSNicholas Bellinger 501c66ac9dbSNicholas Bellinger /*############################################################################## 502c66ac9dbSNicholas Bellinger // Stop functions called by external Target Fabrics Modules 503c66ac9dbSNicholas Bellinger //############################################################################*/ 504c66ac9dbSNicholas Bellinger 5052eafd729SChristoph Hellwig static inline struct se_dev_attrib *to_attrib(struct config_item *item) 5062eafd729SChristoph Hellwig { 5072eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_dev_attrib, 5082eafd729SChristoph Hellwig da_group); 5095873c4d1SChristoph Hellwig } 5105873c4d1SChristoph Hellwig 5112eafd729SChristoph Hellwig /* Start functions for struct config_item_type tb_dev_attrib_cit */ 5122eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_SHOW(_name) \ 5132eafd729SChristoph Hellwig static ssize_t _name##_show(struct config_item *item, char *page) \ 5142eafd729SChristoph Hellwig { \ 5152eafd729SChristoph Hellwig return snprintf(page, PAGE_SIZE, "%u\n", to_attrib(item)->_name); \ 5162eafd729SChristoph Hellwig } 5173effdb90SChristoph Hellwig 5182eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_model_alias); 5192eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_dpo); 5202eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_write); 5212eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_read); 5222eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_write_cache); 5232eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_ua_intlck_ctrl); 5242eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_tas); 5252eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpu); 5262eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpws); 5272eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_caw); 5282eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_3pc); 529b49d6f78SDavid Disseldorp DEF_CONFIGFS_ATTRIB_SHOW(emulate_pr); 5302eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_type); 5312eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_pi_prot_type); 532056e8924SDmitry Monakhov DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_verify); 5332eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(enforce_pr_isids); 5342eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(is_nonrot); 5352eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_rest_reord); 5362eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(force_pr_aptpl); 5372eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_block_size); 5382eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(block_size); 5392eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_max_sectors); 5402eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(optimal_sectors); 5412eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_queue_depth); 5422eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(queue_depth); 5432eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_lba_count); 5442eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_block_desc_count); 5452eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity); 5462eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity_alignment); 547e6f41633SJamie Pocas DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data); 5482eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len); 5492eafd729SChristoph Hellwig 5502eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \ 5512eafd729SChristoph Hellwig static ssize_t _name##_store(struct config_item *item, const char *page,\ 5525873c4d1SChristoph Hellwig size_t count) \ 5535873c4d1SChristoph Hellwig { \ 5542eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); \ 5553effdb90SChristoph Hellwig u32 val; \ 5565873c4d1SChristoph Hellwig int ret; \ 5575873c4d1SChristoph Hellwig \ 5583effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); \ 5593effdb90SChristoph Hellwig if (ret < 0) \ 5603effdb90SChristoph Hellwig return ret; \ 5613effdb90SChristoph Hellwig da->_name = val; \ 5623effdb90SChristoph Hellwig return count; \ 5635873c4d1SChristoph Hellwig } 5645873c4d1SChristoph Hellwig 5652eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_lba_count); 5662eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_block_desc_count); 5672eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity); 5682eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity_alignment); 5692eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(max_write_same_len); 5705873c4d1SChristoph Hellwig 5712eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_STORE_BOOL(_name) \ 5722eafd729SChristoph Hellwig static ssize_t _name##_store(struct config_item *item, const char *page, \ 5733effdb90SChristoph Hellwig size_t count) \ 5743effdb90SChristoph Hellwig { \ 5752eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); \ 5763effdb90SChristoph Hellwig bool flag; \ 5773effdb90SChristoph Hellwig int ret; \ 5783effdb90SChristoph Hellwig \ 5793effdb90SChristoph Hellwig ret = strtobool(page, &flag); \ 5803effdb90SChristoph Hellwig if (ret < 0) \ 5813effdb90SChristoph Hellwig return ret; \ 5823effdb90SChristoph Hellwig da->_name = flag; \ 5833effdb90SChristoph Hellwig return count; \ 5843effdb90SChristoph Hellwig } 5853effdb90SChristoph Hellwig 5862eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_fua_write); 5872eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_caw); 5882eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_3pc); 589b49d6f78SDavid Disseldorp DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_pr); 5902eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(enforce_pr_isids); 5912eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(is_nonrot); 5923effdb90SChristoph Hellwig 5932eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_STORE_STUB(_name) \ 5942eafd729SChristoph Hellwig static ssize_t _name##_store(struct config_item *item, const char *page,\ 5953effdb90SChristoph Hellwig size_t count) \ 5963effdb90SChristoph Hellwig { \ 5973effdb90SChristoph Hellwig printk_once(KERN_WARNING \ 598234bdbc4SChristophe Vu-Brugier "ignoring deprecated %s attribute\n", \ 599234bdbc4SChristophe Vu-Brugier __stringify(_name)); \ 6003effdb90SChristoph Hellwig return count; \ 6013effdb90SChristoph Hellwig } 6023effdb90SChristoph Hellwig 6032eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_dpo); 6042eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_fua_read); 6053effdb90SChristoph Hellwig 6063effdb90SChristoph Hellwig static void dev_set_t10_wwn_model_alias(struct se_device *dev) 6073effdb90SChristoph Hellwig { 6083effdb90SChristoph Hellwig const char *configname; 6093effdb90SChristoph Hellwig 6103effdb90SChristoph Hellwig configname = config_item_name(&dev->dev_group.cg_item); 611b2da4abfSDavid Disseldorp if (strlen(configname) >= INQUIRY_MODEL_LEN) { 6123effdb90SChristoph Hellwig pr_warn("dev[%p]: Backstore name '%s' is too long for " 613b2da4abfSDavid Disseldorp "INQUIRY_MODEL, truncating to 15 characters\n", dev, 6143effdb90SChristoph Hellwig configname); 6153effdb90SChristoph Hellwig } 616b2da4abfSDavid Disseldorp /* 617b2da4abfSDavid Disseldorp * XXX We can't use sizeof(dev->t10_wwn.model) (INQUIRY_MODEL_LEN + 1) 618b2da4abfSDavid Disseldorp * here without potentially breaking existing setups, so continue to 619b2da4abfSDavid Disseldorp * truncate one byte shorter than what can be carried in INQUIRY. 620b2da4abfSDavid Disseldorp */ 621b2da4abfSDavid Disseldorp strlcpy(dev->t10_wwn.model, configname, INQUIRY_MODEL_LEN); 6223effdb90SChristoph Hellwig } 6233effdb90SChristoph Hellwig 6242eafd729SChristoph Hellwig static ssize_t emulate_model_alias_store(struct config_item *item, 6253effdb90SChristoph Hellwig const char *page, size_t count) 6263effdb90SChristoph Hellwig { 6272eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 6283effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 6293effdb90SChristoph Hellwig bool flag; 6303effdb90SChristoph Hellwig int ret; 6313effdb90SChristoph Hellwig 6323effdb90SChristoph Hellwig if (dev->export_count) { 6333effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change model alias" 6343effdb90SChristoph Hellwig " while export_count is %d\n", 6353effdb90SChristoph Hellwig dev, dev->export_count); 6363effdb90SChristoph Hellwig return -EINVAL; 6373effdb90SChristoph Hellwig } 6383effdb90SChristoph Hellwig 6393effdb90SChristoph Hellwig ret = strtobool(page, &flag); 6403effdb90SChristoph Hellwig if (ret < 0) 6413effdb90SChristoph Hellwig return ret; 6423effdb90SChristoph Hellwig 643b2da4abfSDavid Disseldorp BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); 6443effdb90SChristoph Hellwig if (flag) { 6453effdb90SChristoph Hellwig dev_set_t10_wwn_model_alias(dev); 6463effdb90SChristoph Hellwig } else { 647b2da4abfSDavid Disseldorp strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, 648b2da4abfSDavid Disseldorp sizeof(dev->t10_wwn.model)); 6493effdb90SChristoph Hellwig } 6503effdb90SChristoph Hellwig da->emulate_model_alias = flag; 6513effdb90SChristoph Hellwig return count; 6523effdb90SChristoph Hellwig } 6533effdb90SChristoph Hellwig 6542eafd729SChristoph Hellwig static ssize_t emulate_write_cache_store(struct config_item *item, 6553effdb90SChristoph Hellwig const char *page, size_t count) 6563effdb90SChristoph Hellwig { 6572eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 6583effdb90SChristoph Hellwig bool flag; 6593effdb90SChristoph Hellwig int ret; 6603effdb90SChristoph Hellwig 6613effdb90SChristoph Hellwig ret = strtobool(page, &flag); 6623effdb90SChristoph Hellwig if (ret < 0) 6633effdb90SChristoph Hellwig return ret; 6643effdb90SChristoph Hellwig 6653effdb90SChristoph Hellwig if (flag && da->da_dev->transport->get_write_cache) { 6663effdb90SChristoph Hellwig pr_err("emulate_write_cache not supported for this device\n"); 6673effdb90SChristoph Hellwig return -EINVAL; 6683effdb90SChristoph Hellwig } 6693effdb90SChristoph Hellwig 6703effdb90SChristoph Hellwig da->emulate_write_cache = flag; 6713effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", 6723effdb90SChristoph Hellwig da->da_dev, flag); 6733effdb90SChristoph Hellwig return count; 6743effdb90SChristoph Hellwig } 6753effdb90SChristoph Hellwig 6762eafd729SChristoph Hellwig static ssize_t emulate_ua_intlck_ctrl_store(struct config_item *item, 6773effdb90SChristoph Hellwig const char *page, size_t count) 6783effdb90SChristoph Hellwig { 6792eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 6803effdb90SChristoph Hellwig u32 val; 6813effdb90SChristoph Hellwig int ret; 6823effdb90SChristoph Hellwig 6833effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 6843effdb90SChristoph Hellwig if (ret < 0) 6853effdb90SChristoph Hellwig return ret; 6863effdb90SChristoph Hellwig 6871bf630fdSDavid Disseldorp if (val != TARGET_UA_INTLCK_CTRL_CLEAR 6881bf630fdSDavid Disseldorp && val != TARGET_UA_INTLCK_CTRL_NO_CLEAR 6891bf630fdSDavid Disseldorp && val != TARGET_UA_INTLCK_CTRL_ESTABLISH_UA) { 6903effdb90SChristoph Hellwig pr_err("Illegal value %d\n", val); 6913effdb90SChristoph Hellwig return -EINVAL; 6923effdb90SChristoph Hellwig } 6933effdb90SChristoph Hellwig 6943effdb90SChristoph Hellwig if (da->da_dev->export_count) { 6953effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device" 6963effdb90SChristoph Hellwig " UA_INTRLCK_CTRL while export_count is %d\n", 6973effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 6983effdb90SChristoph Hellwig return -EINVAL; 6993effdb90SChristoph Hellwig } 7003effdb90SChristoph Hellwig da->emulate_ua_intlck_ctrl = val; 7013effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", 7023effdb90SChristoph Hellwig da->da_dev, val); 7033effdb90SChristoph Hellwig return count; 7043effdb90SChristoph Hellwig } 7053effdb90SChristoph Hellwig 7062eafd729SChristoph Hellwig static ssize_t emulate_tas_store(struct config_item *item, 7073effdb90SChristoph Hellwig const char *page, size_t count) 7083effdb90SChristoph Hellwig { 7092eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7103effdb90SChristoph Hellwig bool flag; 7113effdb90SChristoph Hellwig int ret; 7123effdb90SChristoph Hellwig 7133effdb90SChristoph Hellwig ret = strtobool(page, &flag); 7143effdb90SChristoph Hellwig if (ret < 0) 7153effdb90SChristoph Hellwig return ret; 7163effdb90SChristoph Hellwig 7173effdb90SChristoph Hellwig if (da->da_dev->export_count) { 7183effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device TAS while" 7193effdb90SChristoph Hellwig " export_count is %d\n", 7203effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 7213effdb90SChristoph Hellwig return -EINVAL; 7223effdb90SChristoph Hellwig } 7233effdb90SChristoph Hellwig da->emulate_tas = flag; 7243effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", 7253effdb90SChristoph Hellwig da->da_dev, flag ? "Enabled" : "Disabled"); 7263effdb90SChristoph Hellwig 7273effdb90SChristoph Hellwig return count; 7283effdb90SChristoph Hellwig } 7293effdb90SChristoph Hellwig 7302eafd729SChristoph Hellwig static ssize_t emulate_tpu_store(struct config_item *item, 7313effdb90SChristoph Hellwig const char *page, size_t count) 7323effdb90SChristoph Hellwig { 7332eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7343effdb90SChristoph Hellwig bool flag; 7353effdb90SChristoph Hellwig int ret; 7363effdb90SChristoph Hellwig 7373effdb90SChristoph Hellwig ret = strtobool(page, &flag); 7383effdb90SChristoph Hellwig if (ret < 0) 7393effdb90SChristoph Hellwig return ret; 7403effdb90SChristoph Hellwig 7413effdb90SChristoph Hellwig /* 7423effdb90SChristoph Hellwig * We expect this value to be non-zero when generic Block Layer 7433effdb90SChristoph Hellwig * Discard supported is detected iblock_create_virtdevice(). 7443effdb90SChristoph Hellwig */ 7453effdb90SChristoph Hellwig if (flag && !da->max_unmap_block_desc_count) { 7463effdb90SChristoph Hellwig pr_err("Generic Block Discard not supported\n"); 7473effdb90SChristoph Hellwig return -ENOSYS; 7483effdb90SChristoph Hellwig } 7493effdb90SChristoph Hellwig 7503effdb90SChristoph Hellwig da->emulate_tpu = flag; 7513effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", 7523effdb90SChristoph Hellwig da->da_dev, flag); 7533effdb90SChristoph Hellwig return count; 7543effdb90SChristoph Hellwig } 7553effdb90SChristoph Hellwig 7562eafd729SChristoph Hellwig static ssize_t emulate_tpws_store(struct config_item *item, 7573effdb90SChristoph Hellwig const char *page, size_t count) 7583effdb90SChristoph Hellwig { 7592eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7603effdb90SChristoph Hellwig bool flag; 7613effdb90SChristoph Hellwig int ret; 7623effdb90SChristoph Hellwig 7633effdb90SChristoph Hellwig ret = strtobool(page, &flag); 7643effdb90SChristoph Hellwig if (ret < 0) 7653effdb90SChristoph Hellwig return ret; 7663effdb90SChristoph Hellwig 7673effdb90SChristoph Hellwig /* 7683effdb90SChristoph Hellwig * We expect this value to be non-zero when generic Block Layer 7693effdb90SChristoph Hellwig * Discard supported is detected iblock_create_virtdevice(). 7703effdb90SChristoph Hellwig */ 7713effdb90SChristoph Hellwig if (flag && !da->max_unmap_block_desc_count) { 7723effdb90SChristoph Hellwig pr_err("Generic Block Discard not supported\n"); 7733effdb90SChristoph Hellwig return -ENOSYS; 7743effdb90SChristoph Hellwig } 7753effdb90SChristoph Hellwig 7763effdb90SChristoph Hellwig da->emulate_tpws = flag; 7773effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", 7783effdb90SChristoph Hellwig da->da_dev, flag); 7793effdb90SChristoph Hellwig return count; 7803effdb90SChristoph Hellwig } 7813effdb90SChristoph Hellwig 7822eafd729SChristoph Hellwig static ssize_t pi_prot_type_store(struct config_item *item, 7833effdb90SChristoph Hellwig const char *page, size_t count) 7843effdb90SChristoph Hellwig { 7852eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7863effdb90SChristoph Hellwig int old_prot = da->pi_prot_type, ret; 7873effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 7883effdb90SChristoph Hellwig u32 flag; 7893effdb90SChristoph Hellwig 7903effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &flag); 7913effdb90SChristoph Hellwig if (ret < 0) 7923effdb90SChristoph Hellwig return ret; 7933effdb90SChristoph Hellwig 7943effdb90SChristoph Hellwig if (flag != 0 && flag != 1 && flag != 2 && flag != 3) { 7953effdb90SChristoph Hellwig pr_err("Illegal value %d for pi_prot_type\n", flag); 7963effdb90SChristoph Hellwig return -EINVAL; 7973effdb90SChristoph Hellwig } 7983effdb90SChristoph Hellwig if (flag == 2) { 7993effdb90SChristoph Hellwig pr_err("DIF TYPE2 protection currently not supported\n"); 8003effdb90SChristoph Hellwig return -ENOSYS; 8013effdb90SChristoph Hellwig } 8023effdb90SChristoph Hellwig if (da->hw_pi_prot_type) { 8033effdb90SChristoph Hellwig pr_warn("DIF protection enabled on underlying hardware," 8043effdb90SChristoph Hellwig " ignoring\n"); 8053effdb90SChristoph Hellwig return count; 8063effdb90SChristoph Hellwig } 8073effdb90SChristoph Hellwig if (!dev->transport->init_prot || !dev->transport->free_prot) { 8083effdb90SChristoph Hellwig /* 0 is only allowed value for non-supporting backends */ 8093effdb90SChristoph Hellwig if (flag == 0) 810bc1a7d6aSAndy Grover return count; 8113effdb90SChristoph Hellwig 8123effdb90SChristoph Hellwig pr_err("DIF protection not supported by backend: %s\n", 8133effdb90SChristoph Hellwig dev->transport->name); 8143effdb90SChristoph Hellwig return -ENOSYS; 8153effdb90SChristoph Hellwig } 816cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 8173effdb90SChristoph Hellwig pr_err("DIF protection requires device to be configured\n"); 8183effdb90SChristoph Hellwig return -ENODEV; 8193effdb90SChristoph Hellwig } 8203effdb90SChristoph Hellwig if (dev->export_count) { 8213effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device PROT type while" 8223effdb90SChristoph Hellwig " export_count is %d\n", dev, dev->export_count); 8233effdb90SChristoph Hellwig return -EINVAL; 8243effdb90SChristoph Hellwig } 8253effdb90SChristoph Hellwig 8263effdb90SChristoph Hellwig da->pi_prot_type = flag; 8273effdb90SChristoph Hellwig 8283effdb90SChristoph Hellwig if (flag && !old_prot) { 8293effdb90SChristoph Hellwig ret = dev->transport->init_prot(dev); 8303effdb90SChristoph Hellwig if (ret) { 8313effdb90SChristoph Hellwig da->pi_prot_type = old_prot; 832056e8924SDmitry Monakhov da->pi_prot_verify = (bool) da->pi_prot_type; 8333effdb90SChristoph Hellwig return ret; 8343effdb90SChristoph Hellwig } 8353effdb90SChristoph Hellwig 8363effdb90SChristoph Hellwig } else if (!flag && old_prot) { 8373effdb90SChristoph Hellwig dev->transport->free_prot(dev); 8383effdb90SChristoph Hellwig } 8393effdb90SChristoph Hellwig 840056e8924SDmitry Monakhov da->pi_prot_verify = (bool) da->pi_prot_type; 8413effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag); 8423effdb90SChristoph Hellwig return count; 8433effdb90SChristoph Hellwig } 8443effdb90SChristoph Hellwig 845b6cd7f34SDavid Disseldorp /* always zero, but attr needs to remain RW to avoid userspace breakage */ 846b6cd7f34SDavid Disseldorp static ssize_t pi_prot_format_show(struct config_item *item, char *page) 847b6cd7f34SDavid Disseldorp { 848b6cd7f34SDavid Disseldorp return snprintf(page, PAGE_SIZE, "0\n"); 849b6cd7f34SDavid Disseldorp } 850b6cd7f34SDavid Disseldorp 8512eafd729SChristoph Hellwig static ssize_t pi_prot_format_store(struct config_item *item, 8523effdb90SChristoph Hellwig const char *page, size_t count) 8533effdb90SChristoph Hellwig { 8542eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 8553effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 8563effdb90SChristoph Hellwig bool flag; 8573effdb90SChristoph Hellwig int ret; 8583effdb90SChristoph Hellwig 8593effdb90SChristoph Hellwig ret = strtobool(page, &flag); 8603effdb90SChristoph Hellwig if (ret < 0) 8613effdb90SChristoph Hellwig return ret; 8623effdb90SChristoph Hellwig 8633effdb90SChristoph Hellwig if (!flag) 8643effdb90SChristoph Hellwig return count; 8653effdb90SChristoph Hellwig 8663effdb90SChristoph Hellwig if (!dev->transport->format_prot) { 8673effdb90SChristoph Hellwig pr_err("DIF protection format not supported by backend %s\n", 8683effdb90SChristoph Hellwig dev->transport->name); 8693effdb90SChristoph Hellwig return -ENOSYS; 8703effdb90SChristoph Hellwig } 871cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 8723effdb90SChristoph Hellwig pr_err("DIF protection format requires device to be configured\n"); 8733effdb90SChristoph Hellwig return -ENODEV; 8743effdb90SChristoph Hellwig } 8753effdb90SChristoph Hellwig if (dev->export_count) { 8763effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to format SE Device PROT type while" 8773effdb90SChristoph Hellwig " export_count is %d\n", dev, dev->export_count); 8783effdb90SChristoph Hellwig return -EINVAL; 8793effdb90SChristoph Hellwig } 8803effdb90SChristoph Hellwig 8813effdb90SChristoph Hellwig ret = dev->transport->format_prot(dev); 8823effdb90SChristoph Hellwig if (ret) 8833effdb90SChristoph Hellwig return ret; 8843effdb90SChristoph Hellwig 8853effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Protection Format complete\n", dev); 8863effdb90SChristoph Hellwig return count; 8873effdb90SChristoph Hellwig } 8883effdb90SChristoph Hellwig 889056e8924SDmitry Monakhov static ssize_t pi_prot_verify_store(struct config_item *item, 890056e8924SDmitry Monakhov const char *page, size_t count) 891056e8924SDmitry Monakhov { 892056e8924SDmitry Monakhov struct se_dev_attrib *da = to_attrib(item); 893056e8924SDmitry Monakhov bool flag; 894056e8924SDmitry Monakhov int ret; 895056e8924SDmitry Monakhov 896056e8924SDmitry Monakhov ret = strtobool(page, &flag); 897056e8924SDmitry Monakhov if (ret < 0) 898056e8924SDmitry Monakhov return ret; 899056e8924SDmitry Monakhov 900056e8924SDmitry Monakhov if (!flag) { 901056e8924SDmitry Monakhov da->pi_prot_verify = flag; 902056e8924SDmitry Monakhov return count; 903056e8924SDmitry Monakhov } 904056e8924SDmitry Monakhov if (da->hw_pi_prot_type) { 905056e8924SDmitry Monakhov pr_warn("DIF protection enabled on underlying hardware," 906056e8924SDmitry Monakhov " ignoring\n"); 907056e8924SDmitry Monakhov return count; 908056e8924SDmitry Monakhov } 909056e8924SDmitry Monakhov if (!da->pi_prot_type) { 910056e8924SDmitry Monakhov pr_warn("DIF protection not supported by backend, ignoring\n"); 911056e8924SDmitry Monakhov return count; 912056e8924SDmitry Monakhov } 913056e8924SDmitry Monakhov da->pi_prot_verify = flag; 914056e8924SDmitry Monakhov 915056e8924SDmitry Monakhov return count; 916056e8924SDmitry Monakhov } 917056e8924SDmitry Monakhov 9182eafd729SChristoph Hellwig static ssize_t force_pr_aptpl_store(struct config_item *item, 9193effdb90SChristoph Hellwig const char *page, size_t count) 9203effdb90SChristoph Hellwig { 9212eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 9223effdb90SChristoph Hellwig bool flag; 9233effdb90SChristoph Hellwig int ret; 9243effdb90SChristoph Hellwig 9253effdb90SChristoph Hellwig ret = strtobool(page, &flag); 9263effdb90SChristoph Hellwig if (ret < 0) 9273effdb90SChristoph Hellwig return ret; 9283effdb90SChristoph Hellwig if (da->da_dev->export_count) { 9293effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to set force_pr_aptpl while" 9303effdb90SChristoph Hellwig " export_count is %d\n", 9313effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 9323effdb90SChristoph Hellwig return -EINVAL; 9333effdb90SChristoph Hellwig } 9343effdb90SChristoph Hellwig 9353effdb90SChristoph Hellwig da->force_pr_aptpl = flag; 9363effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", da->da_dev, flag); 9373effdb90SChristoph Hellwig return count; 9383effdb90SChristoph Hellwig } 9393effdb90SChristoph Hellwig 9402eafd729SChristoph Hellwig static ssize_t emulate_rest_reord_store(struct config_item *item, 9413effdb90SChristoph Hellwig const char *page, size_t count) 9423effdb90SChristoph Hellwig { 9432eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 9443effdb90SChristoph Hellwig bool flag; 9453effdb90SChristoph Hellwig int ret; 9463effdb90SChristoph Hellwig 9473effdb90SChristoph Hellwig ret = strtobool(page, &flag); 9483effdb90SChristoph Hellwig if (ret < 0) 9493effdb90SChristoph Hellwig return ret; 9503effdb90SChristoph Hellwig 9513effdb90SChristoph Hellwig if (flag != 0) { 9523effdb90SChristoph Hellwig printk(KERN_ERR "dev[%p]: SE Device emulation of restricted" 9533effdb90SChristoph Hellwig " reordering not implemented\n", da->da_dev); 9543effdb90SChristoph Hellwig return -ENOSYS; 9553effdb90SChristoph Hellwig } 9563effdb90SChristoph Hellwig da->emulate_rest_reord = flag; 9573effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", 9583effdb90SChristoph Hellwig da->da_dev, flag); 9593effdb90SChristoph Hellwig return count; 9603effdb90SChristoph Hellwig } 9613effdb90SChristoph Hellwig 962e6f41633SJamie Pocas static ssize_t unmap_zeroes_data_store(struct config_item *item, 963e6f41633SJamie Pocas const char *page, size_t count) 964e6f41633SJamie Pocas { 965e6f41633SJamie Pocas struct se_dev_attrib *da = to_attrib(item); 966e6f41633SJamie Pocas bool flag; 967e6f41633SJamie Pocas int ret; 968e6f41633SJamie Pocas 969e6f41633SJamie Pocas ret = strtobool(page, &flag); 970e6f41633SJamie Pocas if (ret < 0) 971e6f41633SJamie Pocas return ret; 972e6f41633SJamie Pocas 973e6f41633SJamie Pocas if (da->da_dev->export_count) { 974e6f41633SJamie Pocas pr_err("dev[%p]: Unable to change SE Device" 975e6f41633SJamie Pocas " unmap_zeroes_data while export_count is %d\n", 976e6f41633SJamie Pocas da->da_dev, da->da_dev->export_count); 977e6f41633SJamie Pocas return -EINVAL; 978e6f41633SJamie Pocas } 979e6f41633SJamie Pocas /* 980e6f41633SJamie Pocas * We expect this value to be non-zero when generic Block Layer 981e6f41633SJamie Pocas * Discard supported is detected iblock_configure_device(). 982e6f41633SJamie Pocas */ 983e6f41633SJamie Pocas if (flag && !da->max_unmap_block_desc_count) { 984e6f41633SJamie Pocas pr_err("dev[%p]: Thin Provisioning LBPRZ will not be set" 985e6f41633SJamie Pocas " because max_unmap_block_desc_count is zero\n", 986e6f41633SJamie Pocas da->da_dev); 987e6f41633SJamie Pocas return -ENOSYS; 988e6f41633SJamie Pocas } 989e6f41633SJamie Pocas da->unmap_zeroes_data = flag; 990e6f41633SJamie Pocas pr_debug("dev[%p]: SE Device Thin Provisioning LBPRZ bit: %d\n", 991e6f41633SJamie Pocas da->da_dev, flag); 9922e498f25SNicholas Bellinger return count; 993e6f41633SJamie Pocas } 994e6f41633SJamie Pocas 9953effdb90SChristoph Hellwig /* 9963effdb90SChristoph Hellwig * Note, this can only be called on unexported SE Device Object. 9973effdb90SChristoph Hellwig */ 9982eafd729SChristoph Hellwig static ssize_t queue_depth_store(struct config_item *item, 9993effdb90SChristoph Hellwig const char *page, size_t count) 10003effdb90SChristoph Hellwig { 10012eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 10023effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 10033effdb90SChristoph Hellwig u32 val; 10043effdb90SChristoph Hellwig int ret; 10053effdb90SChristoph Hellwig 10063effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 10073effdb90SChristoph Hellwig if (ret < 0) 10083effdb90SChristoph Hellwig return ret; 10093effdb90SChristoph Hellwig 10103effdb90SChristoph Hellwig if (dev->export_count) { 10113effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device TCQ while" 10123effdb90SChristoph Hellwig " export_count is %d\n", 10133effdb90SChristoph Hellwig dev, dev->export_count); 10143effdb90SChristoph Hellwig return -EINVAL; 10153effdb90SChristoph Hellwig } 10163effdb90SChristoph Hellwig if (!val) { 10173effdb90SChristoph Hellwig pr_err("dev[%p]: Illegal ZERO value for queue_depth\n", dev); 10183effdb90SChristoph Hellwig return -EINVAL; 10193effdb90SChristoph Hellwig } 10203effdb90SChristoph Hellwig 10213effdb90SChristoph Hellwig if (val > dev->dev_attrib.queue_depth) { 10223effdb90SChristoph Hellwig if (val > dev->dev_attrib.hw_queue_depth) { 10233effdb90SChristoph Hellwig pr_err("dev[%p]: Passed queue_depth:" 10243effdb90SChristoph Hellwig " %u exceeds TCM/SE_Device MAX" 10253effdb90SChristoph Hellwig " TCQ: %u\n", dev, val, 10263effdb90SChristoph Hellwig dev->dev_attrib.hw_queue_depth); 10273effdb90SChristoph Hellwig return -EINVAL; 10283effdb90SChristoph Hellwig } 10293effdb90SChristoph Hellwig } 10303effdb90SChristoph Hellwig da->queue_depth = dev->queue_depth = val; 10313effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, val); 10323effdb90SChristoph Hellwig return count; 10333effdb90SChristoph Hellwig } 10343effdb90SChristoph Hellwig 10352eafd729SChristoph Hellwig static ssize_t optimal_sectors_store(struct config_item *item, 10363effdb90SChristoph Hellwig const char *page, size_t count) 10373effdb90SChristoph Hellwig { 10382eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 10393effdb90SChristoph Hellwig u32 val; 10403effdb90SChristoph Hellwig int ret; 10413effdb90SChristoph Hellwig 10423effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 10433effdb90SChristoph Hellwig if (ret < 0) 10443effdb90SChristoph Hellwig return ret; 10453effdb90SChristoph Hellwig 10463effdb90SChristoph Hellwig if (da->da_dev->export_count) { 10473effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device" 10483effdb90SChristoph Hellwig " optimal_sectors while export_count is %d\n", 10493effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 10503effdb90SChristoph Hellwig return -EINVAL; 10513effdb90SChristoph Hellwig } 10523effdb90SChristoph Hellwig if (val > da->hw_max_sectors) { 10533effdb90SChristoph Hellwig pr_err("dev[%p]: Passed optimal_sectors %u cannot be" 10543effdb90SChristoph Hellwig " greater than hw_max_sectors: %u\n", 10553effdb90SChristoph Hellwig da->da_dev, val, da->hw_max_sectors); 10563effdb90SChristoph Hellwig return -EINVAL; 10573effdb90SChristoph Hellwig } 10583effdb90SChristoph Hellwig 10593effdb90SChristoph Hellwig da->optimal_sectors = val; 10603effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", 10613effdb90SChristoph Hellwig da->da_dev, val); 10623effdb90SChristoph Hellwig return count; 10633effdb90SChristoph Hellwig } 10643effdb90SChristoph Hellwig 10652eafd729SChristoph Hellwig static ssize_t block_size_store(struct config_item *item, 10663effdb90SChristoph Hellwig const char *page, size_t count) 10673effdb90SChristoph Hellwig { 10682eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 10693effdb90SChristoph Hellwig u32 val; 10703effdb90SChristoph Hellwig int ret; 10713effdb90SChristoph Hellwig 10723effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 10733effdb90SChristoph Hellwig if (ret < 0) 10743effdb90SChristoph Hellwig return ret; 10753effdb90SChristoph Hellwig 10763effdb90SChristoph Hellwig if (da->da_dev->export_count) { 10773effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device block_size" 10783effdb90SChristoph Hellwig " while export_count is %d\n", 10793effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 10803effdb90SChristoph Hellwig return -EINVAL; 10813effdb90SChristoph Hellwig } 10823effdb90SChristoph Hellwig 10833effdb90SChristoph Hellwig if (val != 512 && val != 1024 && val != 2048 && val != 4096) { 10843effdb90SChristoph Hellwig pr_err("dev[%p]: Illegal value for block_device: %u" 10853effdb90SChristoph Hellwig " for SE device, must be 512, 1024, 2048 or 4096\n", 10863effdb90SChristoph Hellwig da->da_dev, val); 10873effdb90SChristoph Hellwig return -EINVAL; 10883effdb90SChristoph Hellwig } 10893effdb90SChristoph Hellwig 10903effdb90SChristoph Hellwig da->block_size = val; 10913effdb90SChristoph Hellwig if (da->max_bytes_per_io) 10923effdb90SChristoph Hellwig da->hw_max_sectors = da->max_bytes_per_io / val; 10933effdb90SChristoph Hellwig 10943effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device block_size changed to %u\n", 10953effdb90SChristoph Hellwig da->da_dev, val); 10963effdb90SChristoph Hellwig return count; 10973effdb90SChristoph Hellwig } 10985873c4d1SChristoph Hellwig 1099c17d5d5fSMike Christie static ssize_t alua_support_show(struct config_item *item, char *page) 1100c17d5d5fSMike Christie { 1101c17d5d5fSMike Christie struct se_dev_attrib *da = to_attrib(item); 110269088a04SBodo Stroesser u8 flags = da->da_dev->transport_flags; 1103c17d5d5fSMike Christie 1104c17d5d5fSMike Christie return snprintf(page, PAGE_SIZE, "%d\n", 1105c17d5d5fSMike Christie flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA ? 0 : 1); 1106c17d5d5fSMike Christie } 1107c17d5d5fSMike Christie 1108356ba2a8SBodo Stroesser static ssize_t alua_support_store(struct config_item *item, 1109356ba2a8SBodo Stroesser const char *page, size_t count) 1110356ba2a8SBodo Stroesser { 1111356ba2a8SBodo Stroesser struct se_dev_attrib *da = to_attrib(item); 1112356ba2a8SBodo Stroesser struct se_device *dev = da->da_dev; 1113*ef7ae7f7SMaurizio Lombardi bool flag, oldflag; 1114356ba2a8SBodo Stroesser int ret; 1115356ba2a8SBodo Stroesser 1116*ef7ae7f7SMaurizio Lombardi ret = strtobool(page, &flag); 1117*ef7ae7f7SMaurizio Lombardi if (ret < 0) 1118*ef7ae7f7SMaurizio Lombardi return ret; 1119*ef7ae7f7SMaurizio Lombardi 1120*ef7ae7f7SMaurizio Lombardi oldflag = !(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA); 1121*ef7ae7f7SMaurizio Lombardi if (flag == oldflag) 1122*ef7ae7f7SMaurizio Lombardi return count; 1123*ef7ae7f7SMaurizio Lombardi 1124356ba2a8SBodo Stroesser if (!(dev->transport->transport_flags_changeable & 1125356ba2a8SBodo Stroesser TRANSPORT_FLAG_PASSTHROUGH_ALUA)) { 1126356ba2a8SBodo Stroesser pr_err("dev[%p]: Unable to change SE Device alua_support:" 1127356ba2a8SBodo Stroesser " alua_support has fixed value\n", dev); 1128*ef7ae7f7SMaurizio Lombardi return -ENOSYS; 1129356ba2a8SBodo Stroesser } 1130356ba2a8SBodo Stroesser 1131356ba2a8SBodo Stroesser if (flag) 1132356ba2a8SBodo Stroesser dev->transport_flags &= ~TRANSPORT_FLAG_PASSTHROUGH_ALUA; 1133356ba2a8SBodo Stroesser else 1134356ba2a8SBodo Stroesser dev->transport_flags |= TRANSPORT_FLAG_PASSTHROUGH_ALUA; 1135356ba2a8SBodo Stroesser return count; 1136356ba2a8SBodo Stroesser } 1137356ba2a8SBodo Stroesser 1138c17d5d5fSMike Christie static ssize_t pgr_support_show(struct config_item *item, char *page) 1139c17d5d5fSMike Christie { 1140c17d5d5fSMike Christie struct se_dev_attrib *da = to_attrib(item); 114169088a04SBodo Stroesser u8 flags = da->da_dev->transport_flags; 1142c17d5d5fSMike Christie 1143c17d5d5fSMike Christie return snprintf(page, PAGE_SIZE, "%d\n", 1144c17d5d5fSMike Christie flags & TRANSPORT_FLAG_PASSTHROUGH_PGR ? 0 : 1); 1145c17d5d5fSMike Christie } 1146c17d5d5fSMike Christie 1147356ba2a8SBodo Stroesser static ssize_t pgr_support_store(struct config_item *item, 1148356ba2a8SBodo Stroesser const char *page, size_t count) 1149356ba2a8SBodo Stroesser { 1150356ba2a8SBodo Stroesser struct se_dev_attrib *da = to_attrib(item); 1151356ba2a8SBodo Stroesser struct se_device *dev = da->da_dev; 1152*ef7ae7f7SMaurizio Lombardi bool flag, oldflag; 1153356ba2a8SBodo Stroesser int ret; 1154356ba2a8SBodo Stroesser 1155*ef7ae7f7SMaurizio Lombardi ret = strtobool(page, &flag); 1156*ef7ae7f7SMaurizio Lombardi if (ret < 0) 1157*ef7ae7f7SMaurizio Lombardi return ret; 1158*ef7ae7f7SMaurizio Lombardi 1159*ef7ae7f7SMaurizio Lombardi oldflag = !(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR); 1160*ef7ae7f7SMaurizio Lombardi if (flag == oldflag) 1161*ef7ae7f7SMaurizio Lombardi return count; 1162*ef7ae7f7SMaurizio Lombardi 1163356ba2a8SBodo Stroesser if (!(dev->transport->transport_flags_changeable & 1164356ba2a8SBodo Stroesser TRANSPORT_FLAG_PASSTHROUGH_PGR)) { 1165356ba2a8SBodo Stroesser pr_err("dev[%p]: Unable to change SE Device pgr_support:" 1166356ba2a8SBodo Stroesser " pgr_support has fixed value\n", dev); 1167*ef7ae7f7SMaurizio Lombardi return -ENOSYS; 1168356ba2a8SBodo Stroesser } 1169356ba2a8SBodo Stroesser 1170356ba2a8SBodo Stroesser if (flag) 1171356ba2a8SBodo Stroesser dev->transport_flags &= ~TRANSPORT_FLAG_PASSTHROUGH_PGR; 1172356ba2a8SBodo Stroesser else 1173356ba2a8SBodo Stroesser dev->transport_flags |= TRANSPORT_FLAG_PASSTHROUGH_PGR; 1174356ba2a8SBodo Stroesser return count; 1175356ba2a8SBodo Stroesser } 1176356ba2a8SBodo Stroesser 11772eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_model_alias); 11782eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_dpo); 11792eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_fua_write); 11802eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_fua_read); 11812eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_write_cache); 11822eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_ua_intlck_ctrl); 11832eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tas); 11842eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tpu); 11852eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tpws); 11862eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_caw); 11872eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_3pc); 1188b49d6f78SDavid Disseldorp CONFIGFS_ATTR(, emulate_pr); 11892eafd729SChristoph Hellwig CONFIGFS_ATTR(, pi_prot_type); 11902eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_pi_prot_type); 1191b6cd7f34SDavid Disseldorp CONFIGFS_ATTR(, pi_prot_format); 1192056e8924SDmitry Monakhov CONFIGFS_ATTR(, pi_prot_verify); 11932eafd729SChristoph Hellwig CONFIGFS_ATTR(, enforce_pr_isids); 11942eafd729SChristoph Hellwig CONFIGFS_ATTR(, is_nonrot); 11952eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_rest_reord); 11962eafd729SChristoph Hellwig CONFIGFS_ATTR(, force_pr_aptpl); 11972eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_block_size); 11982eafd729SChristoph Hellwig CONFIGFS_ATTR(, block_size); 11992eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_max_sectors); 12002eafd729SChristoph Hellwig CONFIGFS_ATTR(, optimal_sectors); 12012eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_queue_depth); 12022eafd729SChristoph Hellwig CONFIGFS_ATTR(, queue_depth); 12032eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_unmap_lba_count); 12042eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_unmap_block_desc_count); 12052eafd729SChristoph Hellwig CONFIGFS_ATTR(, unmap_granularity); 12062eafd729SChristoph Hellwig CONFIGFS_ATTR(, unmap_granularity_alignment); 1207e6f41633SJamie Pocas CONFIGFS_ATTR(, unmap_zeroes_data); 12082eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_write_same_len); 1209356ba2a8SBodo Stroesser CONFIGFS_ATTR(, alua_support); 1210356ba2a8SBodo Stroesser CONFIGFS_ATTR(, pgr_support); 1211c66ac9dbSNicholas Bellinger 12125873c4d1SChristoph Hellwig /* 12135873c4d1SChristoph Hellwig * dev_attrib attributes for devices using the target core SBC/SPC 12145873c4d1SChristoph Hellwig * interpreter. Any backend using spc_parse_cdb should be using 12155873c4d1SChristoph Hellwig * these. 12165873c4d1SChristoph Hellwig */ 12175873c4d1SChristoph Hellwig struct configfs_attribute *sbc_attrib_attrs[] = { 12182eafd729SChristoph Hellwig &attr_emulate_model_alias, 12192eafd729SChristoph Hellwig &attr_emulate_dpo, 12202eafd729SChristoph Hellwig &attr_emulate_fua_write, 12212eafd729SChristoph Hellwig &attr_emulate_fua_read, 12222eafd729SChristoph Hellwig &attr_emulate_write_cache, 12232eafd729SChristoph Hellwig &attr_emulate_ua_intlck_ctrl, 12242eafd729SChristoph Hellwig &attr_emulate_tas, 12252eafd729SChristoph Hellwig &attr_emulate_tpu, 12262eafd729SChristoph Hellwig &attr_emulate_tpws, 12272eafd729SChristoph Hellwig &attr_emulate_caw, 12282eafd729SChristoph Hellwig &attr_emulate_3pc, 1229b49d6f78SDavid Disseldorp &attr_emulate_pr, 12302eafd729SChristoph Hellwig &attr_pi_prot_type, 12312eafd729SChristoph Hellwig &attr_hw_pi_prot_type, 12322eafd729SChristoph Hellwig &attr_pi_prot_format, 1233056e8924SDmitry Monakhov &attr_pi_prot_verify, 12342eafd729SChristoph Hellwig &attr_enforce_pr_isids, 12352eafd729SChristoph Hellwig &attr_is_nonrot, 12362eafd729SChristoph Hellwig &attr_emulate_rest_reord, 12372eafd729SChristoph Hellwig &attr_force_pr_aptpl, 12382eafd729SChristoph Hellwig &attr_hw_block_size, 12392eafd729SChristoph Hellwig &attr_block_size, 12402eafd729SChristoph Hellwig &attr_hw_max_sectors, 12412eafd729SChristoph Hellwig &attr_optimal_sectors, 12422eafd729SChristoph Hellwig &attr_hw_queue_depth, 12432eafd729SChristoph Hellwig &attr_queue_depth, 12442eafd729SChristoph Hellwig &attr_max_unmap_lba_count, 12452eafd729SChristoph Hellwig &attr_max_unmap_block_desc_count, 12462eafd729SChristoph Hellwig &attr_unmap_granularity, 12472eafd729SChristoph Hellwig &attr_unmap_granularity_alignment, 1248e6f41633SJamie Pocas &attr_unmap_zeroes_data, 12492eafd729SChristoph Hellwig &attr_max_write_same_len, 1250c17d5d5fSMike Christie &attr_alua_support, 1251c17d5d5fSMike Christie &attr_pgr_support, 12525873c4d1SChristoph Hellwig NULL, 12535873c4d1SChristoph Hellwig }; 12545873c4d1SChristoph Hellwig EXPORT_SYMBOL(sbc_attrib_attrs); 12555873c4d1SChristoph Hellwig 12565873c4d1SChristoph Hellwig /* 12575873c4d1SChristoph Hellwig * Minimal dev_attrib attributes for devices passing through CDBs. 12585873c4d1SChristoph Hellwig * In this case we only provide a few read-only attributes for 12595873c4d1SChristoph Hellwig * backwards compatibility. 12605873c4d1SChristoph Hellwig */ 12615873c4d1SChristoph Hellwig struct configfs_attribute *passthrough_attrib_attrs[] = { 12622eafd729SChristoph Hellwig &attr_hw_pi_prot_type, 12632eafd729SChristoph Hellwig &attr_hw_block_size, 12642eafd729SChristoph Hellwig &attr_hw_max_sectors, 12652eafd729SChristoph Hellwig &attr_hw_queue_depth, 126692999417SBodo Stroesser &attr_emulate_pr, 1267c17d5d5fSMike Christie &attr_alua_support, 1268c17d5d5fSMike Christie &attr_pgr_support, 12695873c4d1SChristoph Hellwig NULL, 12705873c4d1SChristoph Hellwig }; 12715873c4d1SChristoph Hellwig EXPORT_SYMBOL(passthrough_attrib_attrs); 12725873c4d1SChristoph Hellwig 12734703b625SBodo Stroesser /* 12744703b625SBodo Stroesser * pr related dev_attrib attributes for devices passing through CDBs, 12754703b625SBodo Stroesser * but allowing in core pr emulation. 12764703b625SBodo Stroesser */ 12774703b625SBodo Stroesser struct configfs_attribute *passthrough_pr_attrib_attrs[] = { 12784703b625SBodo Stroesser &attr_enforce_pr_isids, 12794703b625SBodo Stroesser &attr_force_pr_aptpl, 12804703b625SBodo Stroesser NULL, 12814703b625SBodo Stroesser }; 12824703b625SBodo Stroesser EXPORT_SYMBOL(passthrough_pr_attrib_attrs); 12834703b625SBodo Stroesser 12842eafd729SChristoph Hellwig TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL); 12858dc31ff9SMike Christie TB_CIT_SETUP_DRV(dev_action, NULL, NULL); 1286c66ac9dbSNicholas Bellinger 1287f79a897eSNicholas Bellinger /* End functions for struct config_item_type tb_dev_attrib_cit */ 1288c66ac9dbSNicholas Bellinger 1289f8d389c6SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_wwn_cit */ 1290c66ac9dbSNicholas Bellinger 12912eafd729SChristoph Hellwig static struct t10_wwn *to_t10_wwn(struct config_item *item) 12922eafd729SChristoph Hellwig { 12932eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group); 12942eafd729SChristoph Hellwig } 1295c66ac9dbSNicholas Bellinger 12960322913cSAlan Adamson static ssize_t target_check_inquiry_data(char *buf) 12970322913cSAlan Adamson { 12980322913cSAlan Adamson size_t len; 12990322913cSAlan Adamson int i; 13000322913cSAlan Adamson 13010322913cSAlan Adamson len = strlen(buf); 13020322913cSAlan Adamson 13030322913cSAlan Adamson /* 13040322913cSAlan Adamson * SPC 4.3.1: 13050322913cSAlan Adamson * ASCII data fields shall contain only ASCII printable characters 13060322913cSAlan Adamson * (i.e., code values 20h to 7Eh) and may be terminated with one or 13070322913cSAlan Adamson * more ASCII null (00h) characters. 13080322913cSAlan Adamson */ 13090322913cSAlan Adamson for (i = 0; i < len; i++) { 13100322913cSAlan Adamson if (buf[i] < 0x20 || buf[i] > 0x7E) { 13110322913cSAlan Adamson pr_err("Emulated T10 Inquiry Data contains non-ASCII-printable characters\n"); 13120322913cSAlan Adamson return -EINVAL; 13130322913cSAlan Adamson } 13140322913cSAlan Adamson } 13150322913cSAlan Adamson 13160322913cSAlan Adamson return len; 13170322913cSAlan Adamson } 13180322913cSAlan Adamson 1319c66ac9dbSNicholas Bellinger /* 132054a6f3f6SDavid Disseldorp * STANDARD and VPD page 0x83 T10 Vendor Identification 132154a6f3f6SDavid Disseldorp */ 132254a6f3f6SDavid Disseldorp static ssize_t target_wwn_vendor_id_show(struct config_item *item, 132354a6f3f6SDavid Disseldorp char *page) 132454a6f3f6SDavid Disseldorp { 132554a6f3f6SDavid Disseldorp return sprintf(page, "%s\n", &to_t10_wwn(item)->vendor[0]); 132654a6f3f6SDavid Disseldorp } 132754a6f3f6SDavid Disseldorp 132854a6f3f6SDavid Disseldorp static ssize_t target_wwn_vendor_id_store(struct config_item *item, 132954a6f3f6SDavid Disseldorp const char *page, size_t count) 133054a6f3f6SDavid Disseldorp { 133154a6f3f6SDavid Disseldorp struct t10_wwn *t10_wwn = to_t10_wwn(item); 133254a6f3f6SDavid Disseldorp struct se_device *dev = t10_wwn->t10_dev; 133354a6f3f6SDavid Disseldorp /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ 133454a6f3f6SDavid Disseldorp unsigned char buf[INQUIRY_VENDOR_LEN + 2]; 133554a6f3f6SDavid Disseldorp char *stripped = NULL; 1336ee26724aSColin Ian King size_t len; 1337ee26724aSColin Ian King ssize_t ret; 133854a6f3f6SDavid Disseldorp 133954a6f3f6SDavid Disseldorp len = strlcpy(buf, page, sizeof(buf)); 134054a6f3f6SDavid Disseldorp if (len < sizeof(buf)) { 134154a6f3f6SDavid Disseldorp /* Strip any newline added from userspace. */ 134254a6f3f6SDavid Disseldorp stripped = strstrip(buf); 134354a6f3f6SDavid Disseldorp len = strlen(stripped); 134454a6f3f6SDavid Disseldorp } 134554a6f3f6SDavid Disseldorp if (len > INQUIRY_VENDOR_LEN) { 134654a6f3f6SDavid Disseldorp pr_err("Emulated T10 Vendor Identification exceeds" 134754a6f3f6SDavid Disseldorp " INQUIRY_VENDOR_LEN: " __stringify(INQUIRY_VENDOR_LEN) 134854a6f3f6SDavid Disseldorp "\n"); 134954a6f3f6SDavid Disseldorp return -EOVERFLOW; 135054a6f3f6SDavid Disseldorp } 135154a6f3f6SDavid Disseldorp 13520322913cSAlan Adamson ret = target_check_inquiry_data(stripped); 13530322913cSAlan Adamson 13540322913cSAlan Adamson if (ret < 0) 13550322913cSAlan Adamson return ret; 135654a6f3f6SDavid Disseldorp 135754a6f3f6SDavid Disseldorp /* 135854a6f3f6SDavid Disseldorp * Check to see if any active exports exist. If they do exist, fail 135954a6f3f6SDavid Disseldorp * here as changing this information on the fly (underneath the 136054a6f3f6SDavid Disseldorp * initiator side OS dependent multipath code) could cause negative 136154a6f3f6SDavid Disseldorp * effects. 136254a6f3f6SDavid Disseldorp */ 136354a6f3f6SDavid Disseldorp if (dev->export_count) { 136454a6f3f6SDavid Disseldorp pr_err("Unable to set T10 Vendor Identification while" 136554a6f3f6SDavid Disseldorp " active %d exports exist\n", dev->export_count); 136654a6f3f6SDavid Disseldorp return -EINVAL; 136754a6f3f6SDavid Disseldorp } 136854a6f3f6SDavid Disseldorp 136954a6f3f6SDavid Disseldorp BUILD_BUG_ON(sizeof(dev->t10_wwn.vendor) != INQUIRY_VENDOR_LEN + 1); 137054a6f3f6SDavid Disseldorp strlcpy(dev->t10_wwn.vendor, stripped, sizeof(dev->t10_wwn.vendor)); 137154a6f3f6SDavid Disseldorp 137254a6f3f6SDavid Disseldorp pr_debug("Target_Core_ConfigFS: Set emulated T10 Vendor Identification:" 137354a6f3f6SDavid Disseldorp " %s\n", dev->t10_wwn.vendor); 137454a6f3f6SDavid Disseldorp 137554a6f3f6SDavid Disseldorp return count; 137654a6f3f6SDavid Disseldorp } 137754a6f3f6SDavid Disseldorp 13780322913cSAlan Adamson static ssize_t target_wwn_product_id_show(struct config_item *item, 13790322913cSAlan Adamson char *page) 13800322913cSAlan Adamson { 13810322913cSAlan Adamson return sprintf(page, "%s\n", &to_t10_wwn(item)->model[0]); 13820322913cSAlan Adamson } 13830322913cSAlan Adamson 13840322913cSAlan Adamson static ssize_t target_wwn_product_id_store(struct config_item *item, 13850322913cSAlan Adamson const char *page, size_t count) 13860322913cSAlan Adamson { 13870322913cSAlan Adamson struct t10_wwn *t10_wwn = to_t10_wwn(item); 13880322913cSAlan Adamson struct se_device *dev = t10_wwn->t10_dev; 13890322913cSAlan Adamson /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ 13900322913cSAlan Adamson unsigned char buf[INQUIRY_MODEL_LEN + 2]; 13910322913cSAlan Adamson char *stripped = NULL; 1392ee26724aSColin Ian King size_t len; 1393ee26724aSColin Ian King ssize_t ret; 13940322913cSAlan Adamson 13950322913cSAlan Adamson len = strlcpy(buf, page, sizeof(buf)); 13960322913cSAlan Adamson if (len < sizeof(buf)) { 13970322913cSAlan Adamson /* Strip any newline added from userspace. */ 13980322913cSAlan Adamson stripped = strstrip(buf); 13990322913cSAlan Adamson len = strlen(stripped); 14000322913cSAlan Adamson } 14010322913cSAlan Adamson if (len > INQUIRY_MODEL_LEN) { 14020322913cSAlan Adamson pr_err("Emulated T10 Vendor exceeds INQUIRY_MODEL_LEN: " 14030322913cSAlan Adamson __stringify(INQUIRY_MODEL_LEN) 14040322913cSAlan Adamson "\n"); 14050322913cSAlan Adamson return -EOVERFLOW; 14060322913cSAlan Adamson } 14070322913cSAlan Adamson 14080322913cSAlan Adamson ret = target_check_inquiry_data(stripped); 14090322913cSAlan Adamson 14100322913cSAlan Adamson if (ret < 0) 14110322913cSAlan Adamson return ret; 14120322913cSAlan Adamson 14130322913cSAlan Adamson /* 14140322913cSAlan Adamson * Check to see if any active exports exist. If they do exist, fail 14150322913cSAlan Adamson * here as changing this information on the fly (underneath the 14160322913cSAlan Adamson * initiator side OS dependent multipath code) could cause negative 14170322913cSAlan Adamson * effects. 14180322913cSAlan Adamson */ 14190322913cSAlan Adamson if (dev->export_count) { 14200322913cSAlan Adamson pr_err("Unable to set T10 Model while active %d exports exist\n", 14210322913cSAlan Adamson dev->export_count); 14220322913cSAlan Adamson return -EINVAL; 14230322913cSAlan Adamson } 14240322913cSAlan Adamson 14250322913cSAlan Adamson BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); 14260322913cSAlan Adamson strlcpy(dev->t10_wwn.model, stripped, sizeof(dev->t10_wwn.model)); 14270322913cSAlan Adamson 14280322913cSAlan Adamson pr_debug("Target_Core_ConfigFS: Set emulated T10 Model Identification: %s\n", 14290322913cSAlan Adamson dev->t10_wwn.model); 14300322913cSAlan Adamson 14310322913cSAlan Adamson return count; 14320322913cSAlan Adamson } 14330322913cSAlan Adamson 14340322913cSAlan Adamson static ssize_t target_wwn_revision_show(struct config_item *item, 14350322913cSAlan Adamson char *page) 14360322913cSAlan Adamson { 14370322913cSAlan Adamson return sprintf(page, "%s\n", &to_t10_wwn(item)->revision[0]); 14380322913cSAlan Adamson } 14390322913cSAlan Adamson 14400322913cSAlan Adamson static ssize_t target_wwn_revision_store(struct config_item *item, 14410322913cSAlan Adamson const char *page, size_t count) 14420322913cSAlan Adamson { 14430322913cSAlan Adamson struct t10_wwn *t10_wwn = to_t10_wwn(item); 14440322913cSAlan Adamson struct se_device *dev = t10_wwn->t10_dev; 14450322913cSAlan Adamson /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ 14460322913cSAlan Adamson unsigned char buf[INQUIRY_REVISION_LEN + 2]; 14470322913cSAlan Adamson char *stripped = NULL; 1448ee26724aSColin Ian King size_t len; 1449ee26724aSColin Ian King ssize_t ret; 14500322913cSAlan Adamson 14510322913cSAlan Adamson len = strlcpy(buf, page, sizeof(buf)); 14520322913cSAlan Adamson if (len < sizeof(buf)) { 14530322913cSAlan Adamson /* Strip any newline added from userspace. */ 14540322913cSAlan Adamson stripped = strstrip(buf); 14550322913cSAlan Adamson len = strlen(stripped); 14560322913cSAlan Adamson } 14570322913cSAlan Adamson if (len > INQUIRY_REVISION_LEN) { 14580322913cSAlan Adamson pr_err("Emulated T10 Revision exceeds INQUIRY_REVISION_LEN: " 14590322913cSAlan Adamson __stringify(INQUIRY_REVISION_LEN) 14600322913cSAlan Adamson "\n"); 14610322913cSAlan Adamson return -EOVERFLOW; 14620322913cSAlan Adamson } 14630322913cSAlan Adamson 14640322913cSAlan Adamson ret = target_check_inquiry_data(stripped); 14650322913cSAlan Adamson 14660322913cSAlan Adamson if (ret < 0) 14670322913cSAlan Adamson return ret; 14680322913cSAlan Adamson 14690322913cSAlan Adamson /* 14700322913cSAlan Adamson * Check to see if any active exports exist. If they do exist, fail 14710322913cSAlan Adamson * here as changing this information on the fly (underneath the 14720322913cSAlan Adamson * initiator side OS dependent multipath code) could cause negative 14730322913cSAlan Adamson * effects. 14740322913cSAlan Adamson */ 14750322913cSAlan Adamson if (dev->export_count) { 14760322913cSAlan Adamson pr_err("Unable to set T10 Revision while active %d exports exist\n", 14770322913cSAlan Adamson dev->export_count); 14780322913cSAlan Adamson return -EINVAL; 14790322913cSAlan Adamson } 14800322913cSAlan Adamson 14810322913cSAlan Adamson BUILD_BUG_ON(sizeof(dev->t10_wwn.revision) != INQUIRY_REVISION_LEN + 1); 14820322913cSAlan Adamson strlcpy(dev->t10_wwn.revision, stripped, sizeof(dev->t10_wwn.revision)); 14830322913cSAlan Adamson 14840322913cSAlan Adamson pr_debug("Target_Core_ConfigFS: Set emulated T10 Revision: %s\n", 14850322913cSAlan Adamson dev->t10_wwn.revision); 14860322913cSAlan Adamson 14870322913cSAlan Adamson return count; 14880322913cSAlan Adamson } 14890322913cSAlan Adamson 14902469f1e0SSergey Samoylenko static ssize_t 14912469f1e0SSergey Samoylenko target_wwn_company_id_show(struct config_item *item, 14922469f1e0SSergey Samoylenko char *page) 14932469f1e0SSergey Samoylenko { 14942469f1e0SSergey Samoylenko return snprintf(page, PAGE_SIZE, "%#08x\n", 14952469f1e0SSergey Samoylenko to_t10_wwn(item)->company_id); 14962469f1e0SSergey Samoylenko } 14972469f1e0SSergey Samoylenko 14982469f1e0SSergey Samoylenko static ssize_t 14992469f1e0SSergey Samoylenko target_wwn_company_id_store(struct config_item *item, 15002469f1e0SSergey Samoylenko const char *page, size_t count) 15012469f1e0SSergey Samoylenko { 15022469f1e0SSergey Samoylenko struct t10_wwn *t10_wwn = to_t10_wwn(item); 15032469f1e0SSergey Samoylenko struct se_device *dev = t10_wwn->t10_dev; 15042469f1e0SSergey Samoylenko u32 val; 15052469f1e0SSergey Samoylenko int ret; 15062469f1e0SSergey Samoylenko 15072469f1e0SSergey Samoylenko /* 15082469f1e0SSergey Samoylenko * The IEEE COMPANY_ID field should contain a 24-bit canonical 15092469f1e0SSergey Samoylenko * form OUI assigned by the IEEE. 15102469f1e0SSergey Samoylenko */ 15112469f1e0SSergey Samoylenko ret = kstrtou32(page, 0, &val); 15122469f1e0SSergey Samoylenko if (ret < 0) 15132469f1e0SSergey Samoylenko return ret; 15142469f1e0SSergey Samoylenko 15152469f1e0SSergey Samoylenko if (val >= 0x1000000) 15162469f1e0SSergey Samoylenko return -EOVERFLOW; 15172469f1e0SSergey Samoylenko 15182469f1e0SSergey Samoylenko /* 15192469f1e0SSergey Samoylenko * Check to see if any active exports exist. If they do exist, fail 15202469f1e0SSergey Samoylenko * here as changing this information on the fly (underneath the 15212469f1e0SSergey Samoylenko * initiator side OS dependent multipath code) could cause negative 15222469f1e0SSergey Samoylenko * effects. 15232469f1e0SSergey Samoylenko */ 15242469f1e0SSergey Samoylenko if (dev->export_count) { 15252469f1e0SSergey Samoylenko pr_err("Unable to set Company ID while %u exports exist\n", 15262469f1e0SSergey Samoylenko dev->export_count); 15272469f1e0SSergey Samoylenko return -EINVAL; 15282469f1e0SSergey Samoylenko } 15292469f1e0SSergey Samoylenko 15302469f1e0SSergey Samoylenko t10_wwn->company_id = val; 15312469f1e0SSergey Samoylenko 15322469f1e0SSergey Samoylenko pr_debug("Target_Core_ConfigFS: Set IEEE Company ID: %#08x\n", 15332469f1e0SSergey Samoylenko t10_wwn->company_id); 15342469f1e0SSergey Samoylenko 15352469f1e0SSergey Samoylenko return count; 15362469f1e0SSergey Samoylenko } 15372469f1e0SSergey Samoylenko 153854a6f3f6SDavid Disseldorp /* 1539c66ac9dbSNicholas Bellinger * VPD page 0x80 Unit serial 1540c66ac9dbSNicholas Bellinger */ 15412eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item, 1542c66ac9dbSNicholas Bellinger char *page) 1543c66ac9dbSNicholas Bellinger { 1544c66ac9dbSNicholas Bellinger return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 15452eafd729SChristoph Hellwig &to_t10_wwn(item)->unit_serial[0]); 1546c66ac9dbSNicholas Bellinger } 1547c66ac9dbSNicholas Bellinger 15482eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_unit_serial_store(struct config_item *item, 15492eafd729SChristoph Hellwig const char *page, size_t count) 1550c66ac9dbSNicholas Bellinger { 15512eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); 15520fd97ccfSChristoph Hellwig struct se_device *dev = t10_wwn->t10_dev; 15532d4e2dafSChaitanya Kulkarni unsigned char buf[INQUIRY_VPD_SERIAL_LEN] = { }; 1554c66ac9dbSNicholas Bellinger 1555c66ac9dbSNicholas Bellinger /* 1556c66ac9dbSNicholas Bellinger * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 1557c66ac9dbSNicholas Bellinger * from the struct scsi_device level firmware, do not allow 1558c66ac9dbSNicholas Bellinger * VPD Unit Serial to be emulated. 1559c66ac9dbSNicholas Bellinger * 1560c66ac9dbSNicholas Bellinger * Note this struct scsi_device could also be emulating VPD 1561c66ac9dbSNicholas Bellinger * information from its drivers/scsi LLD. But for now we assume 1562c66ac9dbSNicholas Bellinger * it is doing 'the right thing' wrt a world wide unique 1563c66ac9dbSNicholas Bellinger * VPD Unit Serial Number that OS dependent multipath can depend on. 1564c66ac9dbSNicholas Bellinger */ 15650fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { 15666708bb27SAndy Grover pr_err("Underlying SCSI device firmware provided VPD" 1567c66ac9dbSNicholas Bellinger " Unit Serial, ignoring request\n"); 1568c66ac9dbSNicholas Bellinger return -EOPNOTSUPP; 1569c66ac9dbSNicholas Bellinger } 1570c66ac9dbSNicholas Bellinger 157160d645a4SDan Carpenter if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 15726708bb27SAndy Grover pr_err("Emulated VPD Unit Serial exceeds" 1573c66ac9dbSNicholas Bellinger " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 1574c66ac9dbSNicholas Bellinger return -EOVERFLOW; 1575c66ac9dbSNicholas Bellinger } 1576c66ac9dbSNicholas Bellinger /* 1577c66ac9dbSNicholas Bellinger * Check to see if any active $FABRIC_MOD exports exist. If they 1578c66ac9dbSNicholas Bellinger * do exist, fail here as changing this information on the fly 1579c66ac9dbSNicholas Bellinger * (underneath the initiator side OS dependent multipath code) 1580c66ac9dbSNicholas Bellinger * could cause negative effects. 1581c66ac9dbSNicholas Bellinger */ 15820fd97ccfSChristoph Hellwig if (dev->export_count) { 15836708bb27SAndy Grover pr_err("Unable to set VPD Unit Serial while" 1584c66ac9dbSNicholas Bellinger " active %d $FABRIC_MOD exports exist\n", 15850fd97ccfSChristoph Hellwig dev->export_count); 1586c66ac9dbSNicholas Bellinger return -EINVAL; 1587c66ac9dbSNicholas Bellinger } 15880fd97ccfSChristoph Hellwig 1589c66ac9dbSNicholas Bellinger /* 1590c66ac9dbSNicholas Bellinger * This currently assumes ASCII encoding for emulated VPD Unit Serial. 1591c66ac9dbSNicholas Bellinger * 1592c66ac9dbSNicholas Bellinger * Also, strip any newline added from the userspace 1593c66ac9dbSNicholas Bellinger * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 1594c66ac9dbSNicholas Bellinger */ 1595c66ac9dbSNicholas Bellinger snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 15960fd97ccfSChristoph Hellwig snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 1597c66ac9dbSNicholas Bellinger "%s", strstrip(buf)); 15980fd97ccfSChristoph Hellwig dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; 1599c66ac9dbSNicholas Bellinger 16006708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 16010fd97ccfSChristoph Hellwig " %s\n", dev->t10_wwn.unit_serial); 1602c66ac9dbSNicholas Bellinger 1603c66ac9dbSNicholas Bellinger return count; 1604c66ac9dbSNicholas Bellinger } 1605c66ac9dbSNicholas Bellinger 1606c66ac9dbSNicholas Bellinger /* 1607c66ac9dbSNicholas Bellinger * VPD page 0x83 Protocol Identifier 1608c66ac9dbSNicholas Bellinger */ 16092eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_protocol_identifier_show(struct config_item *item, 1610c66ac9dbSNicholas Bellinger char *page) 1611c66ac9dbSNicholas Bellinger { 16122eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); 1613c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; 16142d4e2dafSChaitanya Kulkarni unsigned char buf[VPD_TMP_BUF_SIZE] = { }; 1615c66ac9dbSNicholas Bellinger ssize_t len = 0; 1616c66ac9dbSNicholas Bellinger 1617c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); 1618c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 16196708bb27SAndy Grover if (!vpd->protocol_identifier_set) 1620c66ac9dbSNicholas Bellinger continue; 1621c66ac9dbSNicholas Bellinger 1622c66ac9dbSNicholas Bellinger transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 1623c66ac9dbSNicholas Bellinger 16246708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1625c66ac9dbSNicholas Bellinger break; 1626c66ac9dbSNicholas Bellinger 1627c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1628c66ac9dbSNicholas Bellinger } 1629c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); 1630c66ac9dbSNicholas Bellinger 1631c66ac9dbSNicholas Bellinger return len; 1632c66ac9dbSNicholas Bellinger } 1633c66ac9dbSNicholas Bellinger 1634c66ac9dbSNicholas Bellinger /* 1635c66ac9dbSNicholas Bellinger * Generic wrapper for dumping VPD identifiers by association. 1636c66ac9dbSNicholas Bellinger */ 1637c66ac9dbSNicholas Bellinger #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 16382eafd729SChristoph Hellwig static ssize_t target_wwn_##_name##_show(struct config_item *item, \ 1639c66ac9dbSNicholas Bellinger char *page) \ 1640c66ac9dbSNicholas Bellinger { \ 16412eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); \ 1642c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; \ 1643c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; \ 1644c66ac9dbSNicholas Bellinger ssize_t len = 0; \ 1645c66ac9dbSNicholas Bellinger \ 1646c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); \ 1647c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 1648c66ac9dbSNicholas Bellinger if (vpd->association != _assoc) \ 1649c66ac9dbSNicholas Bellinger continue; \ 1650c66ac9dbSNicholas Bellinger \ 1651c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1652c66ac9dbSNicholas Bellinger transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 16536708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1654c66ac9dbSNicholas Bellinger break; \ 1655c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1656c66ac9dbSNicholas Bellinger \ 1657c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1658c66ac9dbSNicholas Bellinger transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 16596708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1660c66ac9dbSNicholas Bellinger break; \ 1661c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1662c66ac9dbSNicholas Bellinger \ 1663c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1664c66ac9dbSNicholas Bellinger transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 16656708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1666c66ac9dbSNicholas Bellinger break; \ 1667c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1668c66ac9dbSNicholas Bellinger } \ 1669c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); \ 1670c66ac9dbSNicholas Bellinger \ 1671c66ac9dbSNicholas Bellinger return len; \ 1672c66ac9dbSNicholas Bellinger } 1673c66ac9dbSNicholas Bellinger 16742eafd729SChristoph Hellwig /* VPD page 0x83 Association: Logical Unit */ 1675c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 16762eafd729SChristoph Hellwig /* VPD page 0x83 Association: Target Port */ 1677c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 16782eafd729SChristoph Hellwig /* VPD page 0x83 Association: SCSI Target Device */ 1679c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 1680c66ac9dbSNicholas Bellinger 168154a6f3f6SDavid Disseldorp CONFIGFS_ATTR(target_wwn_, vendor_id); 16820322913cSAlan Adamson CONFIGFS_ATTR(target_wwn_, product_id); 16830322913cSAlan Adamson CONFIGFS_ATTR(target_wwn_, revision); 16842469f1e0SSergey Samoylenko CONFIGFS_ATTR(target_wwn_, company_id); 16852eafd729SChristoph Hellwig CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); 16862eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); 16872eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); 16882eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port); 16892eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); 1690c66ac9dbSNicholas Bellinger 1691c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 169254a6f3f6SDavid Disseldorp &target_wwn_attr_vendor_id, 16930322913cSAlan Adamson &target_wwn_attr_product_id, 16940322913cSAlan Adamson &target_wwn_attr_revision, 16952469f1e0SSergey Samoylenko &target_wwn_attr_company_id, 16962eafd729SChristoph Hellwig &target_wwn_attr_vpd_unit_serial, 16972eafd729SChristoph Hellwig &target_wwn_attr_vpd_protocol_identifier, 16982eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_logical_unit, 16992eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_target_port, 17002eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_scsi_target_device, 1701c66ac9dbSNicholas Bellinger NULL, 1702c66ac9dbSNicholas Bellinger }; 1703c66ac9dbSNicholas Bellinger 17042eafd729SChristoph Hellwig TB_CIT_SETUP(dev_wwn, NULL, NULL, target_core_dev_wwn_attrs); 1705c66ac9dbSNicholas Bellinger 1706f8d389c6SNicholas Bellinger /* End functions for struct config_item_type tb_dev_wwn_cit */ 1707c66ac9dbSNicholas Bellinger 170891e2e39bSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_pr_cit */ 1709c66ac9dbSNicholas Bellinger 17102eafd729SChristoph Hellwig static struct se_device *pr_to_dev(struct config_item *item) 17112eafd729SChristoph Hellwig { 17122eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_device, 17132eafd729SChristoph Hellwig dev_pr_group); 17142eafd729SChristoph Hellwig } 1715c66ac9dbSNicholas Bellinger 1716d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, 1717d977f437SChristoph Hellwig char *page) 1718c66ac9dbSNicholas Bellinger { 1719c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1720c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 17212d4e2dafSChaitanya Kulkarni char i_buf[PR_REG_ISID_ID_LEN] = { }; 1722c66ac9dbSNicholas Bellinger 1723c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1724d977f437SChristoph Hellwig if (!pr_reg) 1725d977f437SChristoph Hellwig return sprintf(page, "No SPC-3 Reservation holder\n"); 1726d977f437SChristoph Hellwig 1727c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1728d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); 1729c66ac9dbSNicholas Bellinger 1730d977f437SChristoph Hellwig return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", 173130c7ca93SDavid Disseldorp se_nacl->se_tpg->se_tpg_tfo->fabric_name, 1732d2843c17SAndy Grover se_nacl->initiatorname, i_buf); 1733c66ac9dbSNicholas Bellinger } 1734c66ac9dbSNicholas Bellinger 1735d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 1736d977f437SChristoph Hellwig char *page) 1737c66ac9dbSNicholas Bellinger { 1738fae43461SBart Van Assche struct se_session *sess = dev->reservation_holder; 1739c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1740d977f437SChristoph Hellwig ssize_t len; 1741c66ac9dbSNicholas Bellinger 1742fae43461SBart Van Assche if (sess) { 1743fae43461SBart Van Assche se_nacl = sess->se_node_acl; 1744d977f437SChristoph Hellwig len = sprintf(page, 1745d977f437SChristoph Hellwig "SPC-2 Reservation: %s Initiator: %s\n", 174630c7ca93SDavid Disseldorp se_nacl->se_tpg->se_tpg_tfo->fabric_name, 1747c66ac9dbSNicholas Bellinger se_nacl->initiatorname); 1748d977f437SChristoph Hellwig } else { 1749d977f437SChristoph Hellwig len = sprintf(page, "No SPC-2 Reservation holder\n"); 1750d977f437SChristoph Hellwig } 1751d977f437SChristoph Hellwig return len; 1752c66ac9dbSNicholas Bellinger } 1753c66ac9dbSNicholas Bellinger 17542eafd729SChristoph Hellwig static ssize_t target_pr_res_holder_show(struct config_item *item, char *page) 1755c66ac9dbSNicholas Bellinger { 17562eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1757d977f437SChristoph Hellwig int ret; 1758c66ac9dbSNicholas Bellinger 1759b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr) 1760b49d6f78SDavid Disseldorp return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); 1761b49d6f78SDavid Disseldorp 176269088a04SBodo Stroesser if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) 1763d977f437SChristoph Hellwig return sprintf(page, "Passthrough\n"); 1764c66ac9dbSNicholas Bellinger 1765d977f437SChristoph Hellwig spin_lock(&dev->dev_reservation_lock); 1766d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1767d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc2_res(dev, page); 1768d977f437SChristoph Hellwig else 1769d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc3_res(dev, page); 1770d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1771d977f437SChristoph Hellwig return ret; 1772c66ac9dbSNicholas Bellinger } 1773c66ac9dbSNicholas Bellinger 17742eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_all_tgt_pts_show(struct config_item *item, 17752eafd729SChristoph Hellwig char *page) 1776c66ac9dbSNicholas Bellinger { 17772eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1778c66ac9dbSNicholas Bellinger ssize_t len = 0; 1779c66ac9dbSNicholas Bellinger 1780c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1781d977f437SChristoph Hellwig if (!dev->dev_pr_res_holder) { 1782c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1783d977f437SChristoph Hellwig } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { 1784c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: All Target" 1785c66ac9dbSNicholas Bellinger " Ports registration\n"); 1786d977f437SChristoph Hellwig } else { 1787c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: Single" 1788c66ac9dbSNicholas Bellinger " Target Port registration\n"); 1789d977f437SChristoph Hellwig } 1790c66ac9dbSNicholas Bellinger 1791d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1792c66ac9dbSNicholas Bellinger return len; 1793c66ac9dbSNicholas Bellinger } 1794c66ac9dbSNicholas Bellinger 17952eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_generation_show(struct config_item *item, 17962eafd729SChristoph Hellwig char *page) 1797c66ac9dbSNicholas Bellinger { 17982eafd729SChristoph Hellwig return sprintf(page, "0x%08x\n", pr_to_dev(item)->t10_pr.pr_generation); 1799c66ac9dbSNicholas Bellinger } 1800c66ac9dbSNicholas Bellinger 1801c66ac9dbSNicholas Bellinger 18022eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item, 18032eafd729SChristoph Hellwig char *page) 1804c66ac9dbSNicholas Bellinger { 18052eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1806c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1807c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg; 1808c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 18099ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 1810c66ac9dbSNicholas Bellinger ssize_t len = 0; 1811c66ac9dbSNicholas Bellinger 1812c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1813c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 18146708bb27SAndy Grover if (!pr_reg) { 1815c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1816d977f437SChristoph Hellwig goto out_unlock; 1817c66ac9dbSNicholas Bellinger } 1818d977f437SChristoph Hellwig 1819c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1820c66ac9dbSNicholas Bellinger se_tpg = se_nacl->se_tpg; 1821e3d6f909SAndy Grover tfo = se_tpg->se_tpg_tfo; 1822c66ac9dbSNicholas Bellinger 1823c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: %s" 182430c7ca93SDavid Disseldorp " Target Node Endpoint: %s\n", tfo->fabric_name, 1825c66ac9dbSNicholas Bellinger tfo->tpg_get_wwn(se_tpg)); 1826c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 182735d1efe8SMasanari Iida " Identifier Tag: %hu %s Portal Group Tag: %hu" 1828f2d30680SHannes Reinecke " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi, 182930c7ca93SDavid Disseldorp tfo->fabric_name, tfo->tpg_get_tag(se_tpg), 183030c7ca93SDavid Disseldorp tfo->fabric_name, pr_reg->pr_aptpl_target_lun); 1831c66ac9dbSNicholas Bellinger 1832d977f437SChristoph Hellwig out_unlock: 1833d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1834c66ac9dbSNicholas Bellinger return len; 1835c66ac9dbSNicholas Bellinger } 1836c66ac9dbSNicholas Bellinger 1837c66ac9dbSNicholas Bellinger 18382eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item, 18392eafd729SChristoph Hellwig char *page) 1840c66ac9dbSNicholas Bellinger { 18412eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 18429ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 1843c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1844c66ac9dbSNicholas Bellinger unsigned char buf[384]; 1845c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1846c66ac9dbSNicholas Bellinger ssize_t len = 0; 1847d2843c17SAndy Grover int reg_count = 0; 1848c66ac9dbSNicholas Bellinger 1849c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 1850c66ac9dbSNicholas Bellinger 18510fd97ccfSChristoph Hellwig spin_lock(&dev->t10_pr.registration_lock); 18520fd97ccfSChristoph Hellwig list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, 1853c66ac9dbSNicholas Bellinger pr_reg_list) { 1854c66ac9dbSNicholas Bellinger 1855c66ac9dbSNicholas Bellinger memset(buf, 0, 384); 1856c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1857c66ac9dbSNicholas Bellinger tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1858d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, 1859c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 1860c66ac9dbSNicholas Bellinger sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 186130c7ca93SDavid Disseldorp tfo->fabric_name, 1862d2843c17SAndy Grover pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, 1863c66ac9dbSNicholas Bellinger pr_reg->pr_res_generation); 1864c66ac9dbSNicholas Bellinger 18656708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1866c66ac9dbSNicholas Bellinger break; 1867c66ac9dbSNicholas Bellinger 1868c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1869c66ac9dbSNicholas Bellinger reg_count++; 1870c66ac9dbSNicholas Bellinger } 18710fd97ccfSChristoph Hellwig spin_unlock(&dev->t10_pr.registration_lock); 1872c66ac9dbSNicholas Bellinger 18736708bb27SAndy Grover if (!reg_count) 1874c66ac9dbSNicholas Bellinger len += sprintf(page+len, "None\n"); 1875c66ac9dbSNicholas Bellinger 1876c66ac9dbSNicholas Bellinger return len; 1877c66ac9dbSNicholas Bellinger } 1878c66ac9dbSNicholas Bellinger 18792eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_type_show(struct config_item *item, char *page) 1880c66ac9dbSNicholas Bellinger { 18812eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1882c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1883c66ac9dbSNicholas Bellinger ssize_t len = 0; 1884c66ac9dbSNicholas Bellinger 1885c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1886c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1887d977f437SChristoph Hellwig if (pr_reg) { 1888c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1889c66ac9dbSNicholas Bellinger core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1890d977f437SChristoph Hellwig } else { 1891d977f437SChristoph Hellwig len = sprintf(page, "No SPC-3 Reservation holder\n"); 1892d977f437SChristoph Hellwig } 1893c66ac9dbSNicholas Bellinger 1894d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1895c66ac9dbSNicholas Bellinger return len; 1896c66ac9dbSNicholas Bellinger } 1897c66ac9dbSNicholas Bellinger 18982eafd729SChristoph Hellwig static ssize_t target_pr_res_type_show(struct config_item *item, char *page) 1899c66ac9dbSNicholas Bellinger { 19002eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 19012eafd729SChristoph Hellwig 1902b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr) 1903b49d6f78SDavid Disseldorp return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); 190469088a04SBodo Stroesser if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) 1905d977f437SChristoph Hellwig return sprintf(page, "SPC_PASSTHROUGH\n"); 1906b49d6f78SDavid Disseldorp if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1907d977f437SChristoph Hellwig return sprintf(page, "SPC2_RESERVATIONS\n"); 1908b49d6f78SDavid Disseldorp 1909d977f437SChristoph Hellwig return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1910c66ac9dbSNicholas Bellinger } 1911c66ac9dbSNicholas Bellinger 19122eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, 19132eafd729SChristoph Hellwig char *page) 1914c66ac9dbSNicholas Bellinger { 19152eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 19162eafd729SChristoph Hellwig 1917b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 191869088a04SBodo Stroesser (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 1919c66ac9dbSNicholas Bellinger return 0; 1920c66ac9dbSNicholas Bellinger 1921c66ac9dbSNicholas Bellinger return sprintf(page, "APTPL Bit Status: %s\n", 19220fd97ccfSChristoph Hellwig (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1923c66ac9dbSNicholas Bellinger } 1924c66ac9dbSNicholas Bellinger 19252eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item, 19262eafd729SChristoph Hellwig char *page) 1927c66ac9dbSNicholas Bellinger { 19282eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 19292eafd729SChristoph Hellwig 1930b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 193169088a04SBodo Stroesser (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 1932c66ac9dbSNicholas Bellinger return 0; 1933c66ac9dbSNicholas Bellinger 1934c66ac9dbSNicholas Bellinger return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1935c66ac9dbSNicholas Bellinger } 1936c66ac9dbSNicholas Bellinger 1937c66ac9dbSNicholas Bellinger enum { 1938c66ac9dbSNicholas Bellinger Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1939c66ac9dbSNicholas Bellinger Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1940c66ac9dbSNicholas Bellinger Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1941c66ac9dbSNicholas Bellinger Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1942c66ac9dbSNicholas Bellinger }; 1943c66ac9dbSNicholas Bellinger 1944c66ac9dbSNicholas Bellinger static match_table_t tokens = { 1945c66ac9dbSNicholas Bellinger {Opt_initiator_fabric, "initiator_fabric=%s"}, 1946c66ac9dbSNicholas Bellinger {Opt_initiator_node, "initiator_node=%s"}, 1947c66ac9dbSNicholas Bellinger {Opt_initiator_sid, "initiator_sid=%s"}, 1948c66ac9dbSNicholas Bellinger {Opt_sa_res_key, "sa_res_key=%s"}, 1949c66ac9dbSNicholas Bellinger {Opt_res_holder, "res_holder=%d"}, 1950c66ac9dbSNicholas Bellinger {Opt_res_type, "res_type=%d"}, 1951c66ac9dbSNicholas Bellinger {Opt_res_scope, "res_scope=%d"}, 1952c66ac9dbSNicholas Bellinger {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1953a2db857bStangwenji {Opt_mapped_lun, "mapped_lun=%u"}, 1954c66ac9dbSNicholas Bellinger {Opt_target_fabric, "target_fabric=%s"}, 1955c66ac9dbSNicholas Bellinger {Opt_target_node, "target_node=%s"}, 1956c66ac9dbSNicholas Bellinger {Opt_tpgt, "tpgt=%d"}, 1957c66ac9dbSNicholas Bellinger {Opt_port_rtpi, "port_rtpi=%d"}, 1958a2db857bStangwenji {Opt_target_lun, "target_lun=%u"}, 1959c66ac9dbSNicholas Bellinger {Opt_err, NULL} 1960c66ac9dbSNicholas Bellinger }; 1961c66ac9dbSNicholas Bellinger 19622eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item, 19632eafd729SChristoph Hellwig const char *page, size_t count) 1964c66ac9dbSNicholas Bellinger { 19652eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 19666d180253SJesper Juhl unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 19676d180253SJesper Juhl unsigned char *t_fabric = NULL, *t_port = NULL; 19688d213559SJoern Engel char *orig, *ptr, *opts; 1969c66ac9dbSNicholas Bellinger substring_t args[MAX_OPT_ARGS]; 1970c66ac9dbSNicholas Bellinger unsigned long long tmp_ll; 1971c66ac9dbSNicholas Bellinger u64 sa_res_key = 0; 1972f2d30680SHannes Reinecke u64 mapped_lun = 0, target_lun = 0; 1973c66ac9dbSNicholas Bellinger int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 197445fb94c2SBart Van Assche u16 tpgt = 0; 197545fb94c2SBart Van Assche u8 type = 0; 1976c66ac9dbSNicholas Bellinger 1977b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 197869088a04SBodo Stroesser (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 19799105bfc0SAndy Grover return count; 1980d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 19819105bfc0SAndy Grover return count; 1982c66ac9dbSNicholas Bellinger 19830fd97ccfSChristoph Hellwig if (dev->export_count) { 19846708bb27SAndy Grover pr_debug("Unable to process APTPL metadata while" 1985c66ac9dbSNicholas Bellinger " active fabric exports exist\n"); 1986c66ac9dbSNicholas Bellinger return -EINVAL; 1987c66ac9dbSNicholas Bellinger } 1988c66ac9dbSNicholas Bellinger 1989c66ac9dbSNicholas Bellinger opts = kstrdup(page, GFP_KERNEL); 1990c66ac9dbSNicholas Bellinger if (!opts) 1991c66ac9dbSNicholas Bellinger return -ENOMEM; 1992c66ac9dbSNicholas Bellinger 1993c66ac9dbSNicholas Bellinger orig = opts; 199490c161b6SSebastian Andrzej Siewior while ((ptr = strsep(&opts, ",\n")) != NULL) { 1995c66ac9dbSNicholas Bellinger if (!*ptr) 1996c66ac9dbSNicholas Bellinger continue; 1997c66ac9dbSNicholas Bellinger 1998c66ac9dbSNicholas Bellinger token = match_token(ptr, tokens, args); 1999c66ac9dbSNicholas Bellinger switch (token) { 2000c66ac9dbSNicholas Bellinger case Opt_initiator_fabric: 20018d213559SJoern Engel i_fabric = match_strdup(args); 20026d180253SJesper Juhl if (!i_fabric) { 20036d180253SJesper Juhl ret = -ENOMEM; 20046d180253SJesper Juhl goto out; 20056d180253SJesper Juhl } 2006c66ac9dbSNicholas Bellinger break; 2007c66ac9dbSNicholas Bellinger case Opt_initiator_node: 20088d213559SJoern Engel i_port = match_strdup(args); 20096d180253SJesper Juhl if (!i_port) { 20106d180253SJesper Juhl ret = -ENOMEM; 20116d180253SJesper Juhl goto out; 20126d180253SJesper Juhl } 201360d645a4SDan Carpenter if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 20146708bb27SAndy Grover pr_err("APTPL metadata initiator_node=" 2015c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 2016c66ac9dbSNicholas Bellinger PR_APTPL_MAX_IPORT_LEN); 2017c66ac9dbSNicholas Bellinger ret = -EINVAL; 2018c66ac9dbSNicholas Bellinger break; 2019c66ac9dbSNicholas Bellinger } 2020c66ac9dbSNicholas Bellinger break; 2021c66ac9dbSNicholas Bellinger case Opt_initiator_sid: 20228d213559SJoern Engel isid = match_strdup(args); 20236d180253SJesper Juhl if (!isid) { 20246d180253SJesper Juhl ret = -ENOMEM; 20256d180253SJesper Juhl goto out; 20266d180253SJesper Juhl } 202760d645a4SDan Carpenter if (strlen(isid) >= PR_REG_ISID_LEN) { 20286708bb27SAndy Grover pr_err("APTPL metadata initiator_isid" 2029c66ac9dbSNicholas Bellinger "= exceeds PR_REG_ISID_LEN: %d\n", 2030c66ac9dbSNicholas Bellinger PR_REG_ISID_LEN); 2031c66ac9dbSNicholas Bellinger ret = -EINVAL; 2032c66ac9dbSNicholas Bellinger break; 2033c66ac9dbSNicholas Bellinger } 2034c66ac9dbSNicholas Bellinger break; 2035c66ac9dbSNicholas Bellinger case Opt_sa_res_key: 2036a2db857bStangwenji ret = match_u64(args, &tmp_ll); 2037c66ac9dbSNicholas Bellinger if (ret < 0) { 20388d213559SJoern Engel pr_err("kstrtoull() failed for sa_res_key=\n"); 2039c66ac9dbSNicholas Bellinger goto out; 2040c66ac9dbSNicholas Bellinger } 2041c66ac9dbSNicholas Bellinger sa_res_key = (u64)tmp_ll; 2042c66ac9dbSNicholas Bellinger break; 2043c66ac9dbSNicholas Bellinger /* 2044c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Reservation 2045c66ac9dbSNicholas Bellinger */ 2046c66ac9dbSNicholas Bellinger case Opt_res_holder: 2047c2091026SDavid Disseldorp ret = match_int(args, &arg); 2048c2091026SDavid Disseldorp if (ret) 2049c2091026SDavid Disseldorp goto out; 2050c66ac9dbSNicholas Bellinger res_holder = arg; 2051c66ac9dbSNicholas Bellinger break; 2052c66ac9dbSNicholas Bellinger case Opt_res_type: 2053c2091026SDavid Disseldorp ret = match_int(args, &arg); 2054c2091026SDavid Disseldorp if (ret) 2055c2091026SDavid Disseldorp goto out; 2056c66ac9dbSNicholas Bellinger type = (u8)arg; 2057c66ac9dbSNicholas Bellinger break; 2058c66ac9dbSNicholas Bellinger case Opt_res_scope: 2059c2091026SDavid Disseldorp ret = match_int(args, &arg); 2060c2091026SDavid Disseldorp if (ret) 2061c2091026SDavid Disseldorp goto out; 2062c66ac9dbSNicholas Bellinger break; 2063c66ac9dbSNicholas Bellinger case Opt_res_all_tg_pt: 2064c2091026SDavid Disseldorp ret = match_int(args, &arg); 2065c2091026SDavid Disseldorp if (ret) 2066c2091026SDavid Disseldorp goto out; 2067c66ac9dbSNicholas Bellinger all_tg_pt = (int)arg; 2068c66ac9dbSNicholas Bellinger break; 2069c66ac9dbSNicholas Bellinger case Opt_mapped_lun: 2070a2db857bStangwenji ret = match_u64(args, &tmp_ll); 2071c2091026SDavid Disseldorp if (ret) 2072c2091026SDavid Disseldorp goto out; 2073a2db857bStangwenji mapped_lun = (u64)tmp_ll; 2074c66ac9dbSNicholas Bellinger break; 2075c66ac9dbSNicholas Bellinger /* 2076c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Target Port 2077c66ac9dbSNicholas Bellinger */ 2078c66ac9dbSNicholas Bellinger case Opt_target_fabric: 20798d213559SJoern Engel t_fabric = match_strdup(args); 20806d180253SJesper Juhl if (!t_fabric) { 20816d180253SJesper Juhl ret = -ENOMEM; 20826d180253SJesper Juhl goto out; 20836d180253SJesper Juhl } 2084c66ac9dbSNicholas Bellinger break; 2085c66ac9dbSNicholas Bellinger case Opt_target_node: 20868d213559SJoern Engel t_port = match_strdup(args); 20876d180253SJesper Juhl if (!t_port) { 20886d180253SJesper Juhl ret = -ENOMEM; 20896d180253SJesper Juhl goto out; 20906d180253SJesper Juhl } 209160d645a4SDan Carpenter if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 20926708bb27SAndy Grover pr_err("APTPL metadata target_node=" 2093c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 2094c66ac9dbSNicholas Bellinger PR_APTPL_MAX_TPORT_LEN); 2095c66ac9dbSNicholas Bellinger ret = -EINVAL; 2096c66ac9dbSNicholas Bellinger break; 2097c66ac9dbSNicholas Bellinger } 2098c66ac9dbSNicholas Bellinger break; 2099c66ac9dbSNicholas Bellinger case Opt_tpgt: 2100c2091026SDavid Disseldorp ret = match_int(args, &arg); 2101c2091026SDavid Disseldorp if (ret) 2102c2091026SDavid Disseldorp goto out; 2103c66ac9dbSNicholas Bellinger tpgt = (u16)arg; 2104c66ac9dbSNicholas Bellinger break; 2105c66ac9dbSNicholas Bellinger case Opt_port_rtpi: 2106c2091026SDavid Disseldorp ret = match_int(args, &arg); 2107c2091026SDavid Disseldorp if (ret) 2108c2091026SDavid Disseldorp goto out; 2109c66ac9dbSNicholas Bellinger break; 2110c66ac9dbSNicholas Bellinger case Opt_target_lun: 2111a2db857bStangwenji ret = match_u64(args, &tmp_ll); 2112c2091026SDavid Disseldorp if (ret) 2113c2091026SDavid Disseldorp goto out; 2114a2db857bStangwenji target_lun = (u64)tmp_ll; 2115c66ac9dbSNicholas Bellinger break; 2116c66ac9dbSNicholas Bellinger default: 2117c66ac9dbSNicholas Bellinger break; 2118c66ac9dbSNicholas Bellinger } 2119c66ac9dbSNicholas Bellinger } 2120c66ac9dbSNicholas Bellinger 21216708bb27SAndy Grover if (!i_port || !t_port || !sa_res_key) { 21226708bb27SAndy Grover pr_err("Illegal parameters for APTPL registration\n"); 2123c66ac9dbSNicholas Bellinger ret = -EINVAL; 2124c66ac9dbSNicholas Bellinger goto out; 2125c66ac9dbSNicholas Bellinger } 2126c66ac9dbSNicholas Bellinger 2127c66ac9dbSNicholas Bellinger if (res_holder && !(type)) { 21286708bb27SAndy Grover pr_err("Illegal PR type: 0x%02x for reservation" 2129c66ac9dbSNicholas Bellinger " holder\n", type); 2130c66ac9dbSNicholas Bellinger ret = -EINVAL; 2131c66ac9dbSNicholas Bellinger goto out; 2132c66ac9dbSNicholas Bellinger } 2133c66ac9dbSNicholas Bellinger 21340fd97ccfSChristoph Hellwig ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, 2135c66ac9dbSNicholas Bellinger i_port, isid, mapped_lun, t_port, tpgt, target_lun, 2136c66ac9dbSNicholas Bellinger res_holder, all_tg_pt, type); 2137c66ac9dbSNicholas Bellinger out: 21386d180253SJesper Juhl kfree(i_fabric); 21396d180253SJesper Juhl kfree(i_port); 21406d180253SJesper Juhl kfree(isid); 21416d180253SJesper Juhl kfree(t_fabric); 21426d180253SJesper Juhl kfree(t_port); 2143c66ac9dbSNicholas Bellinger kfree(orig); 2144c66ac9dbSNicholas Bellinger return (ret == 0) ? count : ret; 2145c66ac9dbSNicholas Bellinger } 2146c66ac9dbSNicholas Bellinger 2147c66ac9dbSNicholas Bellinger 21482eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_holder); 21492eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_all_tgt_pts); 21502eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_generation); 21512eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_holder_tg_port); 21522eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_registered_i_pts); 21532eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_type); 21542eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_type); 21552eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_aptpl_active); 21562eafd729SChristoph Hellwig CONFIGFS_ATTR(target_pr_, res_aptpl_metadata); 2157c66ac9dbSNicholas Bellinger 2158c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_pr_attrs[] = { 21592eafd729SChristoph Hellwig &target_pr_attr_res_holder, 21602eafd729SChristoph Hellwig &target_pr_attr_res_pr_all_tgt_pts, 21612eafd729SChristoph Hellwig &target_pr_attr_res_pr_generation, 21622eafd729SChristoph Hellwig &target_pr_attr_res_pr_holder_tg_port, 21632eafd729SChristoph Hellwig &target_pr_attr_res_pr_registered_i_pts, 21642eafd729SChristoph Hellwig &target_pr_attr_res_pr_type, 21652eafd729SChristoph Hellwig &target_pr_attr_res_type, 21662eafd729SChristoph Hellwig &target_pr_attr_res_aptpl_active, 21672eafd729SChristoph Hellwig &target_pr_attr_res_aptpl_metadata, 2168c66ac9dbSNicholas Bellinger NULL, 2169c66ac9dbSNicholas Bellinger }; 2170c66ac9dbSNicholas Bellinger 21712eafd729SChristoph Hellwig TB_CIT_SETUP(dev_pr, NULL, NULL, target_core_dev_pr_attrs); 2172c66ac9dbSNicholas Bellinger 217391e2e39bSNicholas Bellinger /* End functions for struct config_item_type tb_dev_pr_cit */ 2174c66ac9dbSNicholas Bellinger 217573112edcSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_cit */ 2176c66ac9dbSNicholas Bellinger 21772eafd729SChristoph Hellwig static inline struct se_device *to_device(struct config_item *item) 2178c66ac9dbSNicholas Bellinger { 21792eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_device, dev_group); 21802eafd729SChristoph Hellwig } 21812eafd729SChristoph Hellwig 21822eafd729SChristoph Hellwig static ssize_t target_dev_info_show(struct config_item *item, char *page) 21832eafd729SChristoph Hellwig { 21842eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2185c66ac9dbSNicholas Bellinger int bl = 0; 2186c66ac9dbSNicholas Bellinger ssize_t read_bytes = 0; 2187c66ac9dbSNicholas Bellinger 21880fd97ccfSChristoph Hellwig transport_dump_dev_state(dev, page, &bl); 2189c66ac9dbSNicholas Bellinger read_bytes += bl; 21900a06d430SChristoph Hellwig read_bytes += dev->transport->show_configfs_dev_params(dev, 21910a06d430SChristoph Hellwig page+read_bytes); 2192c66ac9dbSNicholas Bellinger return read_bytes; 2193c66ac9dbSNicholas Bellinger } 2194c66ac9dbSNicholas Bellinger 21952eafd729SChristoph Hellwig static ssize_t target_dev_control_store(struct config_item *item, 21962eafd729SChristoph Hellwig const char *page, size_t count) 2197c66ac9dbSNicholas Bellinger { 21982eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2199c66ac9dbSNicholas Bellinger 22000a06d430SChristoph Hellwig return dev->transport->set_configfs_dev_params(dev, page, count); 2201c66ac9dbSNicholas Bellinger } 2202c66ac9dbSNicholas Bellinger 22032eafd729SChristoph Hellwig static ssize_t target_dev_alias_show(struct config_item *item, char *page) 2204c66ac9dbSNicholas Bellinger { 22052eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2206c66ac9dbSNicholas Bellinger 22070fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_ALIAS)) 2208c66ac9dbSNicholas Bellinger return 0; 2209c66ac9dbSNicholas Bellinger 22100fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); 2211c66ac9dbSNicholas Bellinger } 2212c66ac9dbSNicholas Bellinger 22132eafd729SChristoph Hellwig static ssize_t target_dev_alias_store(struct config_item *item, 22142eafd729SChristoph Hellwig const char *page, size_t count) 2215c66ac9dbSNicholas Bellinger { 22162eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 22170fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2218c66ac9dbSNicholas Bellinger ssize_t read_bytes; 2219c66ac9dbSNicholas Bellinger 2220c66ac9dbSNicholas Bellinger if (count > (SE_DEV_ALIAS_LEN-1)) { 22216708bb27SAndy Grover pr_err("alias count: %d exceeds" 2222c66ac9dbSNicholas Bellinger " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 2223c66ac9dbSNicholas Bellinger SE_DEV_ALIAS_LEN-1); 2224c66ac9dbSNicholas Bellinger return -EINVAL; 2225c66ac9dbSNicholas Bellinger } 2226c66ac9dbSNicholas Bellinger 22270fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); 22283011684cSDan Carpenter if (!read_bytes) 22293011684cSDan Carpenter return -EINVAL; 22300fd97ccfSChristoph Hellwig if (dev->dev_alias[read_bytes - 1] == '\n') 22310fd97ccfSChristoph Hellwig dev->dev_alias[read_bytes - 1] = '\0'; 22320877eafdSSebastian Andrzej Siewior 22330fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_ALIAS; 22343011684cSDan Carpenter 22356708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 2236c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 22370fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 22380fd97ccfSChristoph Hellwig dev->dev_alias); 2239c66ac9dbSNicholas Bellinger 2240c66ac9dbSNicholas Bellinger return read_bytes; 2241c66ac9dbSNicholas Bellinger } 2242c66ac9dbSNicholas Bellinger 22432eafd729SChristoph Hellwig static ssize_t target_dev_udev_path_show(struct config_item *item, char *page) 2244c66ac9dbSNicholas Bellinger { 22452eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2246c66ac9dbSNicholas Bellinger 22470fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_UDEV_PATH)) 2248c66ac9dbSNicholas Bellinger return 0; 2249c66ac9dbSNicholas Bellinger 22500fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); 2251c66ac9dbSNicholas Bellinger } 2252c66ac9dbSNicholas Bellinger 22532eafd729SChristoph Hellwig static ssize_t target_dev_udev_path_store(struct config_item *item, 22542eafd729SChristoph Hellwig const char *page, size_t count) 2255c66ac9dbSNicholas Bellinger { 22562eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 22570fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2258c66ac9dbSNicholas Bellinger ssize_t read_bytes; 2259c66ac9dbSNicholas Bellinger 2260c66ac9dbSNicholas Bellinger if (count > (SE_UDEV_PATH_LEN-1)) { 22616708bb27SAndy Grover pr_err("udev_path count: %d exceeds" 2262c66ac9dbSNicholas Bellinger " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 2263c66ac9dbSNicholas Bellinger SE_UDEV_PATH_LEN-1); 2264c66ac9dbSNicholas Bellinger return -EINVAL; 2265c66ac9dbSNicholas Bellinger } 2266c66ac9dbSNicholas Bellinger 22670fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, 2268c66ac9dbSNicholas Bellinger "%s", page); 22693011684cSDan Carpenter if (!read_bytes) 22703011684cSDan Carpenter return -EINVAL; 22710fd97ccfSChristoph Hellwig if (dev->udev_path[read_bytes - 1] == '\n') 22720fd97ccfSChristoph Hellwig dev->udev_path[read_bytes - 1] = '\0'; 22730877eafdSSebastian Andrzej Siewior 22740fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_UDEV_PATH; 22753011684cSDan Carpenter 22766708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 2277c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 22780fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 22790fd97ccfSChristoph Hellwig dev->udev_path); 2280c66ac9dbSNicholas Bellinger 2281c66ac9dbSNicholas Bellinger return read_bytes; 2282c66ac9dbSNicholas Bellinger } 2283c66ac9dbSNicholas Bellinger 22842eafd729SChristoph Hellwig static ssize_t target_dev_enable_show(struct config_item *item, char *page) 228564146db7SAndy Grover { 22862eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 228764146db7SAndy Grover 2288cb0f32e1SMike Christie return snprintf(page, PAGE_SIZE, "%d\n", target_dev_configured(dev)); 228964146db7SAndy Grover } 229064146db7SAndy Grover 22912eafd729SChristoph Hellwig static ssize_t target_dev_enable_store(struct config_item *item, 22922eafd729SChristoph Hellwig const char *page, size_t count) 2293c66ac9dbSNicholas Bellinger { 22942eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2295c66ac9dbSNicholas Bellinger char *ptr; 22960fd97ccfSChristoph Hellwig int ret; 2297c66ac9dbSNicholas Bellinger 2298c66ac9dbSNicholas Bellinger ptr = strstr(page, "1"); 22996708bb27SAndy Grover if (!ptr) { 23006708bb27SAndy Grover pr_err("For dev_enable ops, only valid value" 2301c66ac9dbSNicholas Bellinger " is \"1\"\n"); 2302c66ac9dbSNicholas Bellinger return -EINVAL; 2303c66ac9dbSNicholas Bellinger } 2304c66ac9dbSNicholas Bellinger 23050fd97ccfSChristoph Hellwig ret = target_configure_device(dev); 23060fd97ccfSChristoph Hellwig if (ret) 23070fd97ccfSChristoph Hellwig return ret; 2308c66ac9dbSNicholas Bellinger return count; 2309c66ac9dbSNicholas Bellinger } 2310c66ac9dbSNicholas Bellinger 23112eafd729SChristoph Hellwig static ssize_t target_dev_alua_lu_gp_show(struct config_item *item, char *page) 2312c66ac9dbSNicholas Bellinger { 23132eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2314c66ac9dbSNicholas Bellinger struct config_item *lu_ci; 2315c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2316c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2317c66ac9dbSNicholas Bellinger ssize_t len = 0; 2318c66ac9dbSNicholas Bellinger 2319c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 2320c87fbd56SChristoph Hellwig if (!lu_gp_mem) 2321c87fbd56SChristoph Hellwig return 0; 2322c66ac9dbSNicholas Bellinger 2323c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 2324c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 23256708bb27SAndy Grover if (lu_gp) { 2326c66ac9dbSNicholas Bellinger lu_ci = &lu_gp->lu_gp_group.cg_item; 2327c66ac9dbSNicholas Bellinger len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 2328c66ac9dbSNicholas Bellinger config_item_name(lu_ci), lu_gp->lu_gp_id); 2329c66ac9dbSNicholas Bellinger } 2330c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2331c66ac9dbSNicholas Bellinger 2332c66ac9dbSNicholas Bellinger return len; 2333c66ac9dbSNicholas Bellinger } 2334c66ac9dbSNicholas Bellinger 23352eafd729SChristoph Hellwig static ssize_t target_dev_alua_lu_gp_store(struct config_item *item, 23362eafd729SChristoph Hellwig const char *page, size_t count) 2337c66ac9dbSNicholas Bellinger { 23382eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 23390fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2340c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 2341c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 23422d4e2dafSChaitanya Kulkarni unsigned char buf[LU_GROUP_NAME_BUF] = { }; 2343c66ac9dbSNicholas Bellinger int move = 0; 2344c66ac9dbSNicholas Bellinger 2345c87fbd56SChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 2346c87fbd56SChristoph Hellwig if (!lu_gp_mem) 23479105bfc0SAndy Grover return count; 2348c87fbd56SChristoph Hellwig 2349c66ac9dbSNicholas Bellinger if (count > LU_GROUP_NAME_BUF) { 23506708bb27SAndy Grover pr_err("ALUA LU Group Alias too large!\n"); 2351c66ac9dbSNicholas Bellinger return -EINVAL; 2352c66ac9dbSNicholas Bellinger } 2353c66ac9dbSNicholas Bellinger memcpy(buf, page, count); 2354c66ac9dbSNicholas Bellinger /* 2355c66ac9dbSNicholas Bellinger * Any ALUA logical unit alias besides "NULL" means we will be 2356c66ac9dbSNicholas Bellinger * making a new group association. 2357c66ac9dbSNicholas Bellinger */ 2358c66ac9dbSNicholas Bellinger if (strcmp(strstrip(buf), "NULL")) { 2359c66ac9dbSNicholas Bellinger /* 2360c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name() will increment reference to 2361c66ac9dbSNicholas Bellinger * struct t10_alua_lu_gp. This reference is released with 2362c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name below(). 2363c66ac9dbSNicholas Bellinger */ 2364c66ac9dbSNicholas Bellinger lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 23656708bb27SAndy Grover if (!lu_gp_new) 2366c66ac9dbSNicholas Bellinger return -ENODEV; 2367c66ac9dbSNicholas Bellinger } 2368c66ac9dbSNicholas Bellinger 2369c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 2370c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 23716708bb27SAndy Grover if (lu_gp) { 2372c66ac9dbSNicholas Bellinger /* 2373c66ac9dbSNicholas Bellinger * Clearing an existing lu_gp association, and replacing 2374c66ac9dbSNicholas Bellinger * with NULL 2375c66ac9dbSNicholas Bellinger */ 23766708bb27SAndy Grover if (!lu_gp_new) { 23776708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 2378c66ac9dbSNicholas Bellinger " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 2379c66ac9dbSNicholas Bellinger " %hu\n", 2380c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 23810fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 2382c66ac9dbSNicholas Bellinger config_item_name(&lu_gp->lu_gp_group.cg_item), 2383c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2384c66ac9dbSNicholas Bellinger 2385c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 2386c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2387c66ac9dbSNicholas Bellinger 2388c66ac9dbSNicholas Bellinger return count; 2389c66ac9dbSNicholas Bellinger } 2390c66ac9dbSNicholas Bellinger /* 2391c66ac9dbSNicholas Bellinger * Removing existing association of lu_gp_mem with lu_gp 2392c66ac9dbSNicholas Bellinger */ 2393c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 2394c66ac9dbSNicholas Bellinger move = 1; 2395c66ac9dbSNicholas Bellinger } 2396c66ac9dbSNicholas Bellinger /* 2397c66ac9dbSNicholas Bellinger * Associate lu_gp_mem with lu_gp_new. 2398c66ac9dbSNicholas Bellinger */ 2399c66ac9dbSNicholas Bellinger __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 2400c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2401c66ac9dbSNicholas Bellinger 24026708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 2403c66ac9dbSNicholas Bellinger " core/alua/lu_gps/%s, ID: %hu\n", 2404c66ac9dbSNicholas Bellinger (move) ? "Moving" : "Adding", 2405c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 24060fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 2407c66ac9dbSNicholas Bellinger config_item_name(&lu_gp_new->lu_gp_group.cg_item), 2408c66ac9dbSNicholas Bellinger lu_gp_new->lu_gp_id); 2409c66ac9dbSNicholas Bellinger 2410c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 2411c66ac9dbSNicholas Bellinger return count; 2412c66ac9dbSNicholas Bellinger } 2413c66ac9dbSNicholas Bellinger 24142eafd729SChristoph Hellwig static ssize_t target_dev_lba_map_show(struct config_item *item, char *page) 2415229d4f11SHannes Reinecke { 24162eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2417229d4f11SHannes Reinecke struct t10_alua_lba_map *map; 2418229d4f11SHannes Reinecke struct t10_alua_lba_map_member *mem; 2419229d4f11SHannes Reinecke char *b = page; 2420229d4f11SHannes Reinecke int bl = 0; 2421229d4f11SHannes Reinecke char state; 2422229d4f11SHannes Reinecke 2423229d4f11SHannes Reinecke spin_lock(&dev->t10_alua.lba_map_lock); 2424229d4f11SHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 2425229d4f11SHannes Reinecke bl += sprintf(b + bl, "%u %u\n", 2426229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_size, 2427229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_multiplier); 2428229d4f11SHannes Reinecke list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { 2429229d4f11SHannes Reinecke bl += sprintf(b + bl, "%llu %llu", 2430229d4f11SHannes Reinecke map->lba_map_first_lba, map->lba_map_last_lba); 2431229d4f11SHannes Reinecke list_for_each_entry(mem, &map->lba_map_mem_list, 2432229d4f11SHannes Reinecke lba_map_mem_list) { 2433229d4f11SHannes Reinecke switch (mem->lba_map_mem_alua_state) { 2434229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: 2435229d4f11SHannes Reinecke state = 'O'; 2436229d4f11SHannes Reinecke break; 2437229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: 2438229d4f11SHannes Reinecke state = 'A'; 2439229d4f11SHannes Reinecke break; 2440229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_STANDBY: 2441229d4f11SHannes Reinecke state = 'S'; 2442229d4f11SHannes Reinecke break; 2443229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_UNAVAILABLE: 2444229d4f11SHannes Reinecke state = 'U'; 2445229d4f11SHannes Reinecke break; 2446229d4f11SHannes Reinecke default: 2447229d4f11SHannes Reinecke state = '.'; 2448229d4f11SHannes Reinecke break; 2449229d4f11SHannes Reinecke } 2450229d4f11SHannes Reinecke bl += sprintf(b + bl, " %d:%c", 2451229d4f11SHannes Reinecke mem->lba_map_mem_alua_pg_id, state); 2452229d4f11SHannes Reinecke } 2453229d4f11SHannes Reinecke bl += sprintf(b + bl, "\n"); 2454229d4f11SHannes Reinecke } 2455229d4f11SHannes Reinecke spin_unlock(&dev->t10_alua.lba_map_lock); 2456229d4f11SHannes Reinecke return bl; 2457229d4f11SHannes Reinecke } 2458229d4f11SHannes Reinecke 24592eafd729SChristoph Hellwig static ssize_t target_dev_lba_map_store(struct config_item *item, 24602eafd729SChristoph Hellwig const char *page, size_t count) 2461229d4f11SHannes Reinecke { 24622eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2463229d4f11SHannes Reinecke struct t10_alua_lba_map *lba_map = NULL; 2464229d4f11SHannes Reinecke struct list_head lba_list; 2465f0a8afecSBart Van Assche char *map_entries, *orig, *ptr; 2466229d4f11SHannes Reinecke char state; 2467229d4f11SHannes Reinecke int pg_num = -1, pg; 2468229d4f11SHannes Reinecke int ret = 0, num = 0, pg_id, alua_state; 2469229d4f11SHannes Reinecke unsigned long start_lba = -1, end_lba = -1; 2470229d4f11SHannes Reinecke unsigned long segment_size = -1, segment_mult = -1; 2471229d4f11SHannes Reinecke 2472f0a8afecSBart Van Assche orig = map_entries = kstrdup(page, GFP_KERNEL); 2473229d4f11SHannes Reinecke if (!map_entries) 2474229d4f11SHannes Reinecke return -ENOMEM; 2475229d4f11SHannes Reinecke 2476229d4f11SHannes Reinecke INIT_LIST_HEAD(&lba_list); 2477229d4f11SHannes Reinecke while ((ptr = strsep(&map_entries, "\n")) != NULL) { 2478229d4f11SHannes Reinecke if (!*ptr) 2479229d4f11SHannes Reinecke continue; 2480229d4f11SHannes Reinecke 2481229d4f11SHannes Reinecke if (num == 0) { 2482229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu\n", 2483229d4f11SHannes Reinecke &segment_size, &segment_mult) != 2) { 2484229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 2485229d4f11SHannes Reinecke ret = -EINVAL; 2486229d4f11SHannes Reinecke break; 2487229d4f11SHannes Reinecke } 2488229d4f11SHannes Reinecke num++; 2489229d4f11SHannes Reinecke continue; 2490229d4f11SHannes Reinecke } 2491229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { 2492229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 2493229d4f11SHannes Reinecke ret = -EINVAL; 2494229d4f11SHannes Reinecke break; 2495229d4f11SHannes Reinecke } 2496229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2497229d4f11SHannes Reinecke if (!ptr) { 2498229d4f11SHannes Reinecke pr_err("Invalid line %d, missing end lba\n", num); 2499229d4f11SHannes Reinecke ret = -EINVAL; 2500229d4f11SHannes Reinecke break; 2501229d4f11SHannes Reinecke } 2502229d4f11SHannes Reinecke ptr++; 2503229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2504229d4f11SHannes Reinecke if (!ptr) { 2505229d4f11SHannes Reinecke pr_err("Invalid line %d, missing state definitions\n", 2506229d4f11SHannes Reinecke num); 2507229d4f11SHannes Reinecke ret = -EINVAL; 2508229d4f11SHannes Reinecke break; 2509229d4f11SHannes Reinecke } 2510229d4f11SHannes Reinecke ptr++; 2511229d4f11SHannes Reinecke lba_map = core_alua_allocate_lba_map(&lba_list, 2512229d4f11SHannes Reinecke start_lba, end_lba); 2513229d4f11SHannes Reinecke if (IS_ERR(lba_map)) { 2514229d4f11SHannes Reinecke ret = PTR_ERR(lba_map); 2515229d4f11SHannes Reinecke break; 2516229d4f11SHannes Reinecke } 2517229d4f11SHannes Reinecke pg = 0; 2518229d4f11SHannes Reinecke while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { 2519229d4f11SHannes Reinecke switch (state) { 2520229d4f11SHannes Reinecke case 'O': 2521229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; 2522229d4f11SHannes Reinecke break; 2523229d4f11SHannes Reinecke case 'A': 2524229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; 2525229d4f11SHannes Reinecke break; 2526229d4f11SHannes Reinecke case 'S': 2527229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_STANDBY; 2528229d4f11SHannes Reinecke break; 2529229d4f11SHannes Reinecke case 'U': 2530229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; 2531229d4f11SHannes Reinecke break; 2532229d4f11SHannes Reinecke default: 2533229d4f11SHannes Reinecke pr_err("Invalid ALUA state '%c'\n", state); 2534229d4f11SHannes Reinecke ret = -EINVAL; 2535229d4f11SHannes Reinecke goto out; 2536229d4f11SHannes Reinecke } 2537229d4f11SHannes Reinecke 2538229d4f11SHannes Reinecke ret = core_alua_allocate_lba_map_mem(lba_map, 2539229d4f11SHannes Reinecke pg_id, alua_state); 2540229d4f11SHannes Reinecke if (ret) { 2541229d4f11SHannes Reinecke pr_err("Invalid target descriptor %d:%c " 2542229d4f11SHannes Reinecke "at line %d\n", 2543229d4f11SHannes Reinecke pg_id, state, num); 2544229d4f11SHannes Reinecke break; 2545229d4f11SHannes Reinecke } 2546229d4f11SHannes Reinecke pg++; 2547229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2548229d4f11SHannes Reinecke if (ptr) 2549229d4f11SHannes Reinecke ptr++; 2550229d4f11SHannes Reinecke else 2551229d4f11SHannes Reinecke break; 2552229d4f11SHannes Reinecke } 2553229d4f11SHannes Reinecke if (pg_num == -1) 2554229d4f11SHannes Reinecke pg_num = pg; 2555229d4f11SHannes Reinecke else if (pg != pg_num) { 2556229d4f11SHannes Reinecke pr_err("Only %d from %d port groups definitions " 2557229d4f11SHannes Reinecke "at line %d\n", pg, pg_num, num); 2558229d4f11SHannes Reinecke ret = -EINVAL; 2559229d4f11SHannes Reinecke break; 2560229d4f11SHannes Reinecke } 2561229d4f11SHannes Reinecke num++; 2562229d4f11SHannes Reinecke } 2563229d4f11SHannes Reinecke out: 2564229d4f11SHannes Reinecke if (ret) { 2565229d4f11SHannes Reinecke core_alua_free_lba_map(&lba_list); 2566229d4f11SHannes Reinecke count = ret; 2567229d4f11SHannes Reinecke } else 2568229d4f11SHannes Reinecke core_alua_set_lba_map(dev, &lba_list, 2569229d4f11SHannes Reinecke segment_size, segment_mult); 2570f0a8afecSBart Van Assche kfree(orig); 2571229d4f11SHannes Reinecke return count; 2572229d4f11SHannes Reinecke } 2573229d4f11SHannes Reinecke 25742eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_dev_, info); 25752eafd729SChristoph Hellwig CONFIGFS_ATTR_WO(target_dev_, control); 25762eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, alias); 25772eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, udev_path); 25782eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, enable); 25792eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, alua_lu_gp); 25802eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, lba_map); 2581229d4f11SHannes Reinecke 258273112edcSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrs[] = { 25832eafd729SChristoph Hellwig &target_dev_attr_info, 25842eafd729SChristoph Hellwig &target_dev_attr_control, 25852eafd729SChristoph Hellwig &target_dev_attr_alias, 25862eafd729SChristoph Hellwig &target_dev_attr_udev_path, 25872eafd729SChristoph Hellwig &target_dev_attr_enable, 25882eafd729SChristoph Hellwig &target_dev_attr_alua_lu_gp, 25892eafd729SChristoph Hellwig &target_dev_attr_lba_map, 2590c66ac9dbSNicholas Bellinger NULL, 2591c66ac9dbSNicholas Bellinger }; 2592c66ac9dbSNicholas Bellinger 2593c66ac9dbSNicholas Bellinger static void target_core_dev_release(struct config_item *item) 2594c66ac9dbSNicholas Bellinger { 25950fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 25960fd97ccfSChristoph Hellwig struct se_device *dev = 25970fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 2598c66ac9dbSNicholas Bellinger 25990fd97ccfSChristoph Hellwig target_free_device(dev); 2600c66ac9dbSNicholas Bellinger } 2601c66ac9dbSNicholas Bellinger 2602c17cd249SNicholas Bellinger /* 2603c17cd249SNicholas Bellinger * Used in target_core_fabric_configfs.c to verify valid se_device symlink 2604c17cd249SNicholas Bellinger * within target_fabric_port_link() 2605c17cd249SNicholas Bellinger */ 2606c17cd249SNicholas Bellinger struct configfs_item_operations target_core_dev_item_ops = { 2607c66ac9dbSNicholas Bellinger .release = target_core_dev_release, 2608c66ac9dbSNicholas Bellinger }; 2609c66ac9dbSNicholas Bellinger 261073112edcSNicholas Bellinger TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); 2611c66ac9dbSNicholas Bellinger 261273112edcSNicholas Bellinger /* End functions for struct config_item_type tb_dev_cit */ 2613c66ac9dbSNicholas Bellinger 2614c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 2615c66ac9dbSNicholas Bellinger 26162eafd729SChristoph Hellwig static inline struct t10_alua_lu_gp *to_lu_gp(struct config_item *item) 2617c66ac9dbSNicholas Bellinger { 26182eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_alua_lu_gp, 26192eafd729SChristoph Hellwig lu_gp_group); 26202eafd729SChristoph Hellwig } 26212eafd729SChristoph Hellwig 26222eafd729SChristoph Hellwig static ssize_t target_lu_gp_lu_gp_id_show(struct config_item *item, char *page) 26232eafd729SChristoph Hellwig { 26242eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 26252eafd729SChristoph Hellwig 26266708bb27SAndy Grover if (!lu_gp->lu_gp_valid_id) 2627c66ac9dbSNicholas Bellinger return 0; 2628c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 2629c66ac9dbSNicholas Bellinger } 2630c66ac9dbSNicholas Bellinger 26312eafd729SChristoph Hellwig static ssize_t target_lu_gp_lu_gp_id_store(struct config_item *item, 26322eafd729SChristoph Hellwig const char *page, size_t count) 2633c66ac9dbSNicholas Bellinger { 26342eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 2635c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 2636c66ac9dbSNicholas Bellinger unsigned long lu_gp_id; 2637c66ac9dbSNicholas Bellinger int ret; 2638c66ac9dbSNicholas Bellinger 263957103d7fSJingoo Han ret = kstrtoul(page, 0, &lu_gp_id); 2640c66ac9dbSNicholas Bellinger if (ret < 0) { 264157103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2642c66ac9dbSNicholas Bellinger " lu_gp_id\n", ret); 264357103d7fSJingoo Han return ret; 2644c66ac9dbSNicholas Bellinger } 2645c66ac9dbSNicholas Bellinger if (lu_gp_id > 0x0000ffff) { 26466708bb27SAndy Grover pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 2647c66ac9dbSNicholas Bellinger " 0x0000ffff\n", lu_gp_id); 2648c66ac9dbSNicholas Bellinger return -EINVAL; 2649c66ac9dbSNicholas Bellinger } 2650c66ac9dbSNicholas Bellinger 2651c66ac9dbSNicholas Bellinger ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 2652c66ac9dbSNicholas Bellinger if (ret < 0) 2653c66ac9dbSNicholas Bellinger return -EINVAL; 2654c66ac9dbSNicholas Bellinger 26556708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 2656c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s to ID: %hu\n", 2657c66ac9dbSNicholas Bellinger config_item_name(&alua_lu_gp_cg->cg_item), 2658c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2659c66ac9dbSNicholas Bellinger 2660c66ac9dbSNicholas Bellinger return count; 2661c66ac9dbSNicholas Bellinger } 2662c66ac9dbSNicholas Bellinger 26632eafd729SChristoph Hellwig static ssize_t target_lu_gp_members_show(struct config_item *item, char *page) 2664c66ac9dbSNicholas Bellinger { 26652eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 2666c66ac9dbSNicholas Bellinger struct se_device *dev; 2667c66ac9dbSNicholas Bellinger struct se_hba *hba; 2668c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2669c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 26702d4e2dafSChaitanya Kulkarni unsigned char buf[LU_GROUP_NAME_BUF] = { }; 2671c66ac9dbSNicholas Bellinger 2672c66ac9dbSNicholas Bellinger spin_lock(&lu_gp->lu_gp_lock); 2673c66ac9dbSNicholas Bellinger list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 2674c66ac9dbSNicholas Bellinger dev = lu_gp_mem->lu_gp_mem_dev; 26750fd97ccfSChristoph Hellwig hba = dev->se_hba; 2676c66ac9dbSNicholas Bellinger 2677c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 2678c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 26790fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item)); 2680c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2681c66ac9dbSNicholas Bellinger 2682c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 26836708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2684c66ac9dbSNicholas Bellinger "_members buffer\n"); 2685c66ac9dbSNicholas Bellinger break; 2686c66ac9dbSNicholas Bellinger } 2687c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2688c66ac9dbSNicholas Bellinger len += cur_len; 2689c66ac9dbSNicholas Bellinger } 2690c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp->lu_gp_lock); 2691c66ac9dbSNicholas Bellinger 2692c66ac9dbSNicholas Bellinger return len; 2693c66ac9dbSNicholas Bellinger } 2694c66ac9dbSNicholas Bellinger 26952eafd729SChristoph Hellwig CONFIGFS_ATTR(target_lu_gp_, lu_gp_id); 26962eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_lu_gp_, members); 2697c66ac9dbSNicholas Bellinger 2698c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 26992eafd729SChristoph Hellwig &target_lu_gp_attr_lu_gp_id, 27002eafd729SChristoph Hellwig &target_lu_gp_attr_members, 2701c66ac9dbSNicholas Bellinger NULL, 2702c66ac9dbSNicholas Bellinger }; 2703c66ac9dbSNicholas Bellinger 27041f6fe7cbSNicholas Bellinger static void target_core_alua_lu_gp_release(struct config_item *item) 27051f6fe7cbSNicholas Bellinger { 27061f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 27071f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 27081f6fe7cbSNicholas Bellinger 27091f6fe7cbSNicholas Bellinger core_alua_free_lu_gp(lu_gp); 27101f6fe7cbSNicholas Bellinger } 27111f6fe7cbSNicholas Bellinger 2712c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_lu_gp_ops = { 27131f6fe7cbSNicholas Bellinger .release = target_core_alua_lu_gp_release, 2714c66ac9dbSNicholas Bellinger }; 2715c66ac9dbSNicholas Bellinger 2716ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_lu_gp_cit = { 2717c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_lu_gp_ops, 2718c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_lu_gp_attrs, 2719c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2720c66ac9dbSNicholas Bellinger }; 2721c66ac9dbSNicholas Bellinger 2722c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 2723c66ac9dbSNicholas Bellinger 2724c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 2725c66ac9dbSNicholas Bellinger 2726c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_lu_gp( 2727c66ac9dbSNicholas Bellinger struct config_group *group, 2728c66ac9dbSNicholas Bellinger const char *name) 2729c66ac9dbSNicholas Bellinger { 2730c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2731c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = NULL; 2732c66ac9dbSNicholas Bellinger struct config_item *alua_lu_gp_ci = NULL; 2733c66ac9dbSNicholas Bellinger 2734c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp(name, 0); 2735c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 2736c66ac9dbSNicholas Bellinger return NULL; 2737c66ac9dbSNicholas Bellinger 2738c66ac9dbSNicholas Bellinger alua_lu_gp_cg = &lu_gp->lu_gp_group; 2739c66ac9dbSNicholas Bellinger alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 2740c66ac9dbSNicholas Bellinger 2741c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_lu_gp_cg, name, 2742c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 2743c66ac9dbSNicholas Bellinger 27446708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 2745c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s\n", 2746c66ac9dbSNicholas Bellinger config_item_name(alua_lu_gp_ci)); 2747c66ac9dbSNicholas Bellinger 2748c66ac9dbSNicholas Bellinger return alua_lu_gp_cg; 2749c66ac9dbSNicholas Bellinger 2750c66ac9dbSNicholas Bellinger } 2751c66ac9dbSNicholas Bellinger 2752c66ac9dbSNicholas Bellinger static void target_core_alua_drop_lu_gp( 2753c66ac9dbSNicholas Bellinger struct config_group *group, 2754c66ac9dbSNicholas Bellinger struct config_item *item) 2755c66ac9dbSNicholas Bellinger { 2756c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 2757c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 2758c66ac9dbSNicholas Bellinger 27596708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 2760c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s, ID: %hu\n", 2761c66ac9dbSNicholas Bellinger config_item_name(item), lu_gp->lu_gp_id); 27621f6fe7cbSNicholas Bellinger /* 27631f6fe7cbSNicholas Bellinger * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 27641f6fe7cbSNicholas Bellinger * -> target_core_alua_lu_gp_release() 27651f6fe7cbSNicholas Bellinger */ 2766c66ac9dbSNicholas Bellinger config_item_put(item); 2767c66ac9dbSNicholas Bellinger } 2768c66ac9dbSNicholas Bellinger 2769c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 2770c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_lu_gp, 2771c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_lu_gp, 2772c66ac9dbSNicholas Bellinger }; 2773c66ac9dbSNicholas Bellinger 2774ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_lu_gps_cit = { 2775c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2776c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_lu_gps_group_ops, 2777c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2778c66ac9dbSNicholas Bellinger }; 2779c66ac9dbSNicholas Bellinger 2780c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 2781c66ac9dbSNicholas Bellinger 2782c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2783c66ac9dbSNicholas Bellinger 27842eafd729SChristoph Hellwig static inline struct t10_alua_tg_pt_gp *to_tg_pt_gp(struct config_item *item) 27852eafd729SChristoph Hellwig { 27862eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_alua_tg_pt_gp, 27872eafd729SChristoph Hellwig tg_pt_gp_group); 27882eafd729SChristoph Hellwig } 2789c66ac9dbSNicholas Bellinger 27902eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_state_show(struct config_item *item, 2791c66ac9dbSNicholas Bellinger char *page) 2792c66ac9dbSNicholas Bellinger { 2793c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", 2794d19c4643SMike Christie to_tg_pt_gp(item)->tg_pt_gp_alua_access_state); 2795c66ac9dbSNicholas Bellinger } 2796c66ac9dbSNicholas Bellinger 27972eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_state_store(struct config_item *item, 27982eafd729SChristoph Hellwig const char *page, size_t count) 2799c66ac9dbSNicholas Bellinger { 28002eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 28010fd97ccfSChristoph Hellwig struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; 2802c66ac9dbSNicholas Bellinger unsigned long tmp; 2803c66ac9dbSNicholas Bellinger int new_state, ret; 2804c66ac9dbSNicholas Bellinger 28056708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 2806baa75afdSBart Van Assche pr_err("Unable to do implicit ALUA on invalid tg_pt_gp ID\n"); 2807c66ac9dbSNicholas Bellinger return -EINVAL; 2808c66ac9dbSNicholas Bellinger } 2809cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 2810f1453773SNicholas Bellinger pr_err("Unable to set alua_access_state while device is" 2811f1453773SNicholas Bellinger " not configured\n"); 2812f1453773SNicholas Bellinger return -ENODEV; 2813f1453773SNicholas Bellinger } 2814c66ac9dbSNicholas Bellinger 281557103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2816c66ac9dbSNicholas Bellinger if (ret < 0) { 28176708bb27SAndy Grover pr_err("Unable to extract new ALUA access state from" 2818c66ac9dbSNicholas Bellinger " %s\n", page); 281957103d7fSJingoo Han return ret; 2820c66ac9dbSNicholas Bellinger } 2821c66ac9dbSNicholas Bellinger new_state = (int)tmp; 2822c66ac9dbSNicholas Bellinger 2823125d0119SHannes Reinecke if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { 2824125d0119SHannes Reinecke pr_err("Unable to process implicit configfs ALUA" 2825125d0119SHannes Reinecke " transition while TPGS_IMPLICIT_ALUA is disabled\n"); 2826c66ac9dbSNicholas Bellinger return -EINVAL; 2827c66ac9dbSNicholas Bellinger } 2828c66094bfSHannes Reinecke if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && 2829c66094bfSHannes Reinecke new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { 2830c66094bfSHannes Reinecke /* LBA DEPENDENT is only allowed with implicit ALUA */ 2831c66094bfSHannes Reinecke pr_err("Unable to process implicit configfs ALUA transition" 2832c66094bfSHannes Reinecke " while explicit ALUA management is enabled\n"); 2833c66094bfSHannes Reinecke return -EINVAL; 2834c66094bfSHannes Reinecke } 2835c66ac9dbSNicholas Bellinger 28360fd97ccfSChristoph Hellwig ret = core_alua_do_port_transition(tg_pt_gp, dev, 2837c66ac9dbSNicholas Bellinger NULL, NULL, new_state, 0); 2838c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; 2839c66ac9dbSNicholas Bellinger } 2840c66ac9dbSNicholas Bellinger 28412eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_status_show(struct config_item *item, 2842c66ac9dbSNicholas Bellinger char *page) 2843c66ac9dbSNicholas Bellinger { 28442eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2845c66ac9dbSNicholas Bellinger return sprintf(page, "%s\n", 2846c66ac9dbSNicholas Bellinger core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2847c66ac9dbSNicholas Bellinger } 2848c66ac9dbSNicholas Bellinger 28492eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_status_store( 28502eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 2851c66ac9dbSNicholas Bellinger { 28522eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2853c66ac9dbSNicholas Bellinger unsigned long tmp; 2854c66ac9dbSNicholas Bellinger int new_status, ret; 2855c66ac9dbSNicholas Bellinger 28566708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 2857baa75afdSBart Van Assche pr_err("Unable to set ALUA access status on invalid tg_pt_gp ID\n"); 2858c66ac9dbSNicholas Bellinger return -EINVAL; 2859c66ac9dbSNicholas Bellinger } 2860c66ac9dbSNicholas Bellinger 286157103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2862c66ac9dbSNicholas Bellinger if (ret < 0) { 28636708bb27SAndy Grover pr_err("Unable to extract new ALUA access status" 2864c66ac9dbSNicholas Bellinger " from %s\n", page); 286557103d7fSJingoo Han return ret; 2866c66ac9dbSNicholas Bellinger } 2867c66ac9dbSNicholas Bellinger new_status = (int)tmp; 2868c66ac9dbSNicholas Bellinger 2869c66ac9dbSNicholas Bellinger if ((new_status != ALUA_STATUS_NONE) && 2870125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && 2871125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { 28726708bb27SAndy Grover pr_err("Illegal ALUA access status: 0x%02x\n", 2873c66ac9dbSNicholas Bellinger new_status); 2874c66ac9dbSNicholas Bellinger return -EINVAL; 2875c66ac9dbSNicholas Bellinger } 2876c66ac9dbSNicholas Bellinger 2877c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2878c66ac9dbSNicholas Bellinger return count; 2879c66ac9dbSNicholas Bellinger } 2880c66ac9dbSNicholas Bellinger 28812eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_type_show(struct config_item *item, 2882c66ac9dbSNicholas Bellinger char *page) 2883c66ac9dbSNicholas Bellinger { 28842eafd729SChristoph Hellwig return core_alua_show_access_type(to_tg_pt_gp(item), page); 2885c66ac9dbSNicholas Bellinger } 2886c66ac9dbSNicholas Bellinger 28872eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_type_store(struct config_item *item, 28882eafd729SChristoph Hellwig const char *page, size_t count) 2889c66ac9dbSNicholas Bellinger { 28902eafd729SChristoph Hellwig return core_alua_store_access_type(to_tg_pt_gp(item), page, count); 2891c66ac9dbSNicholas Bellinger } 2892c66ac9dbSNicholas Bellinger 28932eafd729SChristoph Hellwig #define ALUA_SUPPORTED_STATE_ATTR(_name, _bit) \ 28942eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_support_##_name##_show( \ 28952eafd729SChristoph Hellwig struct config_item *item, char *p) \ 2896b0a382c5SHannes Reinecke { \ 28972eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ 28982eafd729SChristoph Hellwig return sprintf(p, "%d\n", \ 28992eafd729SChristoph Hellwig !!(t->tg_pt_gp_alua_supported_states & _bit)); \ 29002eafd729SChristoph Hellwig } \ 29012eafd729SChristoph Hellwig \ 29022eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_support_##_name##_store( \ 29032eafd729SChristoph Hellwig struct config_item *item, const char *p, size_t c) \ 2904b0a382c5SHannes Reinecke { \ 29052eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ 2906b0a382c5SHannes Reinecke unsigned long tmp; \ 2907b0a382c5SHannes Reinecke int ret; \ 2908b0a382c5SHannes Reinecke \ 2909b0a382c5SHannes Reinecke if (!t->tg_pt_gp_valid_id) { \ 2910baa75afdSBart Van Assche pr_err("Unable to set " #_name " ALUA state on invalid tg_pt_gp ID\n"); \ 2911b0a382c5SHannes Reinecke return -EINVAL; \ 2912b0a382c5SHannes Reinecke } \ 2913b0a382c5SHannes Reinecke \ 2914b0a382c5SHannes Reinecke ret = kstrtoul(p, 0, &tmp); \ 2915b0a382c5SHannes Reinecke if (ret < 0) { \ 2916b0a382c5SHannes Reinecke pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ 2917b0a382c5SHannes Reinecke return -EINVAL; \ 2918b0a382c5SHannes Reinecke } \ 2919b0a382c5SHannes Reinecke if (tmp > 1) { \ 2920b0a382c5SHannes Reinecke pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ 2921b0a382c5SHannes Reinecke return -EINVAL; \ 2922b0a382c5SHannes Reinecke } \ 29231f0b030cSSebastian Herbszt if (tmp) \ 29242eafd729SChristoph Hellwig t->tg_pt_gp_alua_supported_states |= _bit; \ 2925b0a382c5SHannes Reinecke else \ 29262eafd729SChristoph Hellwig t->tg_pt_gp_alua_supported_states &= ~_bit; \ 2927b0a382c5SHannes Reinecke \ 2928b0a382c5SHannes Reinecke return c; \ 29296be526c4SHannes Reinecke } 29306be526c4SHannes Reinecke 29312eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(transitioning, ALUA_T_SUP); 29322eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(offline, ALUA_O_SUP); 29332eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(lba_dependent, ALUA_LBD_SUP); 29342eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(unavailable, ALUA_U_SUP); 29352eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(standby, ALUA_S_SUP); 29362eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(active_optimized, ALUA_AO_SUP); 29372eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(active_nonoptimized, ALUA_AN_SUP); 29386be526c4SHannes Reinecke 29392eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_write_metadata_show( 29402eafd729SChristoph Hellwig struct config_item *item, char *page) 2941c66ac9dbSNicholas Bellinger { 29422eafd729SChristoph Hellwig return sprintf(page, "%d\n", 29432eafd729SChristoph Hellwig to_tg_pt_gp(item)->tg_pt_gp_write_metadata); 2944c66ac9dbSNicholas Bellinger } 2945c66ac9dbSNicholas Bellinger 29462eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_write_metadata_store( 29472eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 2948c66ac9dbSNicholas Bellinger { 29492eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2950c66ac9dbSNicholas Bellinger unsigned long tmp; 2951c66ac9dbSNicholas Bellinger int ret; 2952c66ac9dbSNicholas Bellinger 295357103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2954c66ac9dbSNicholas Bellinger if (ret < 0) { 29556708bb27SAndy Grover pr_err("Unable to extract alua_write_metadata\n"); 295657103d7fSJingoo Han return ret; 2957c66ac9dbSNicholas Bellinger } 2958c66ac9dbSNicholas Bellinger 2959c66ac9dbSNicholas Bellinger if ((tmp != 0) && (tmp != 1)) { 29606708bb27SAndy Grover pr_err("Illegal value for alua_write_metadata:" 2961c66ac9dbSNicholas Bellinger " %lu\n", tmp); 2962c66ac9dbSNicholas Bellinger return -EINVAL; 2963c66ac9dbSNicholas Bellinger } 2964c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2965c66ac9dbSNicholas Bellinger 2966c66ac9dbSNicholas Bellinger return count; 2967c66ac9dbSNicholas Bellinger } 2968c66ac9dbSNicholas Bellinger 29692eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_nonop_delay_msecs_show(struct config_item *item, 2970c66ac9dbSNicholas Bellinger char *page) 2971c66ac9dbSNicholas Bellinger { 29722eafd729SChristoph Hellwig return core_alua_show_nonop_delay_msecs(to_tg_pt_gp(item), page); 2973c66ac9dbSNicholas Bellinger } 2974c66ac9dbSNicholas Bellinger 29752eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_nonop_delay_msecs_store(struct config_item *item, 29762eafd729SChristoph Hellwig const char *page, size_t count) 2977c66ac9dbSNicholas Bellinger { 29782eafd729SChristoph Hellwig return core_alua_store_nonop_delay_msecs(to_tg_pt_gp(item), page, 29792eafd729SChristoph Hellwig count); 2980c66ac9dbSNicholas Bellinger } 2981c66ac9dbSNicholas Bellinger 29822eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_trans_delay_msecs_show(struct config_item *item, 2983c66ac9dbSNicholas Bellinger char *page) 2984c66ac9dbSNicholas Bellinger { 29852eafd729SChristoph Hellwig return core_alua_show_trans_delay_msecs(to_tg_pt_gp(item), page); 2986c66ac9dbSNicholas Bellinger } 2987c66ac9dbSNicholas Bellinger 29882eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_trans_delay_msecs_store(struct config_item *item, 29892eafd729SChristoph Hellwig const char *page, size_t count) 2990c66ac9dbSNicholas Bellinger { 29912eafd729SChristoph Hellwig return core_alua_store_trans_delay_msecs(to_tg_pt_gp(item), page, 29922eafd729SChristoph Hellwig count); 2993c66ac9dbSNicholas Bellinger } 2994c66ac9dbSNicholas Bellinger 29952eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_implicit_trans_secs_show( 29962eafd729SChristoph Hellwig struct config_item *item, char *page) 29972eafd729SChristoph Hellwig { 29982eafd729SChristoph Hellwig return core_alua_show_implicit_trans_secs(to_tg_pt_gp(item), page); 29992eafd729SChristoph Hellwig } 3000c66ac9dbSNicholas Bellinger 30012eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_implicit_trans_secs_store( 30022eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 30032eafd729SChristoph Hellwig { 30042eafd729SChristoph Hellwig return core_alua_store_implicit_trans_secs(to_tg_pt_gp(item), page, 30052eafd729SChristoph Hellwig count); 30062eafd729SChristoph Hellwig } 30072eafd729SChristoph Hellwig 30082eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_preferred_show(struct config_item *item, 30095b9a4d72SNicholas Bellinger char *page) 30105b9a4d72SNicholas Bellinger { 30112eafd729SChristoph Hellwig return core_alua_show_preferred_bit(to_tg_pt_gp(item), page); 30125b9a4d72SNicholas Bellinger } 30135b9a4d72SNicholas Bellinger 30142eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_preferred_store(struct config_item *item, 30152eafd729SChristoph Hellwig const char *page, size_t count) 30165b9a4d72SNicholas Bellinger { 30172eafd729SChristoph Hellwig return core_alua_store_preferred_bit(to_tg_pt_gp(item), page, count); 30185b9a4d72SNicholas Bellinger } 30195b9a4d72SNicholas Bellinger 30202eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_tg_pt_gp_id_show(struct config_item *item, 3021c66ac9dbSNicholas Bellinger char *page) 3022c66ac9dbSNicholas Bellinger { 30232eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 3024c66ac9dbSNicholas Bellinger 30256708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) 3026c66ac9dbSNicholas Bellinger return 0; 3027c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 3028c66ac9dbSNicholas Bellinger } 3029c66ac9dbSNicholas Bellinger 30302eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_tg_pt_gp_id_store(struct config_item *item, 30312eafd729SChristoph Hellwig const char *page, size_t count) 3032c66ac9dbSNicholas Bellinger { 30332eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 3034c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 3035c66ac9dbSNicholas Bellinger unsigned long tg_pt_gp_id; 3036c66ac9dbSNicholas Bellinger int ret; 3037c66ac9dbSNicholas Bellinger 303857103d7fSJingoo Han ret = kstrtoul(page, 0, &tg_pt_gp_id); 3039c66ac9dbSNicholas Bellinger if (ret < 0) { 30403d035237SHannes Reinecke pr_err("ALUA tg_pt_gp_id: invalid value '%s' for tg_pt_gp_id\n", 30413d035237SHannes Reinecke page); 304257103d7fSJingoo Han return ret; 3043c66ac9dbSNicholas Bellinger } 3044c66ac9dbSNicholas Bellinger if (tg_pt_gp_id > 0x0000ffff) { 30453d035237SHannes Reinecke pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum: 0x0000ffff\n", 30463d035237SHannes Reinecke tg_pt_gp_id); 3047c66ac9dbSNicholas Bellinger return -EINVAL; 3048c66ac9dbSNicholas Bellinger } 3049c66ac9dbSNicholas Bellinger 3050c66ac9dbSNicholas Bellinger ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 3051c66ac9dbSNicholas Bellinger if (ret < 0) 3052c66ac9dbSNicholas Bellinger return -EINVAL; 3053c66ac9dbSNicholas Bellinger 30546708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 3055c66ac9dbSNicholas Bellinger "core/alua/tg_pt_gps/%s to ID: %hu\n", 3056c66ac9dbSNicholas Bellinger config_item_name(&alua_tg_pt_gp_cg->cg_item), 3057c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_id); 3058c66ac9dbSNicholas Bellinger 3059c66ac9dbSNicholas Bellinger return count; 3060c66ac9dbSNicholas Bellinger } 3061c66ac9dbSNicholas Bellinger 30622eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_members_show(struct config_item *item, 3063c66ac9dbSNicholas Bellinger char *page) 3064c66ac9dbSNicholas Bellinger { 30652eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 3066c66ac9dbSNicholas Bellinger struct se_lun *lun; 3067c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 30682d4e2dafSChaitanya Kulkarni unsigned char buf[TG_PT_GROUP_NAME_BUF] = { }; 3069c66ac9dbSNicholas Bellinger 3070c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp->tg_pt_gp_lock); 3071adf653f9SChristoph Hellwig list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, 3072adf653f9SChristoph Hellwig lun_tg_pt_gp_link) { 3073adf653f9SChristoph Hellwig struct se_portal_group *tpg = lun->lun_tpg; 3074c66ac9dbSNicholas Bellinger 3075c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 307630c7ca93SDavid Disseldorp "/%s\n", tpg->se_tpg_tfo->fabric_name, 3077e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), 3078e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 3079c66ac9dbSNicholas Bellinger config_item_name(&lun->lun_group.cg_item)); 3080c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 3081c66ac9dbSNicholas Bellinger 3082c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 30836708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 3084c66ac9dbSNicholas Bellinger "_members buffer\n"); 3085c66ac9dbSNicholas Bellinger break; 3086c66ac9dbSNicholas Bellinger } 3087c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 3088c66ac9dbSNicholas Bellinger len += cur_len; 3089c66ac9dbSNicholas Bellinger } 3090c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 3091c66ac9dbSNicholas Bellinger 3092c66ac9dbSNicholas Bellinger return len; 3093c66ac9dbSNicholas Bellinger } 3094c66ac9dbSNicholas Bellinger 30952eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_state); 30962eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_status); 30972eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_type); 30982eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_transitioning); 30992eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_offline); 31002eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_lba_dependent); 31012eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_unavailable); 31022eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_standby); 31032eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_optimized); 31042eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_nonoptimized); 31052eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_write_metadata); 31062eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, nonop_delay_msecs); 31072eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, trans_delay_msecs); 31082eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, implicit_trans_secs); 31092eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, preferred); 31102eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, tg_pt_gp_id); 31112eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_tg_pt_gp_, members); 3112c66ac9dbSNicholas Bellinger 3113c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 31142eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_state, 31152eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_status, 31162eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_type, 31172eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_transitioning, 31182eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_offline, 31192eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_lba_dependent, 31202eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_unavailable, 31212eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_standby, 31222eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_active_nonoptimized, 31232eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_active_optimized, 31242eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_write_metadata, 31252eafd729SChristoph Hellwig &target_tg_pt_gp_attr_nonop_delay_msecs, 31262eafd729SChristoph Hellwig &target_tg_pt_gp_attr_trans_delay_msecs, 31272eafd729SChristoph Hellwig &target_tg_pt_gp_attr_implicit_trans_secs, 31282eafd729SChristoph Hellwig &target_tg_pt_gp_attr_preferred, 31292eafd729SChristoph Hellwig &target_tg_pt_gp_attr_tg_pt_gp_id, 31302eafd729SChristoph Hellwig &target_tg_pt_gp_attr_members, 3131c66ac9dbSNicholas Bellinger NULL, 3132c66ac9dbSNicholas Bellinger }; 3133c66ac9dbSNicholas Bellinger 31341f6fe7cbSNicholas Bellinger static void target_core_alua_tg_pt_gp_release(struct config_item *item) 31351f6fe7cbSNicholas Bellinger { 31361f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 31371f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 31381f6fe7cbSNicholas Bellinger 31391f6fe7cbSNicholas Bellinger core_alua_free_tg_pt_gp(tg_pt_gp); 31401f6fe7cbSNicholas Bellinger } 31411f6fe7cbSNicholas Bellinger 3142c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 31431f6fe7cbSNicholas Bellinger .release = target_core_alua_tg_pt_gp_release, 3144c66ac9dbSNicholas Bellinger }; 3145c66ac9dbSNicholas Bellinger 3146ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_tg_pt_gp_cit = { 3147c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 3148c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_tg_pt_gp_attrs, 3149c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3150c66ac9dbSNicholas Bellinger }; 3151c66ac9dbSNicholas Bellinger 3152c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 3153c66ac9dbSNicholas Bellinger 315472aca57bSNicholas Bellinger /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 3155c66ac9dbSNicholas Bellinger 3156c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_tg_pt_gp( 3157c66ac9dbSNicholas Bellinger struct config_group *group, 3158c66ac9dbSNicholas Bellinger const char *name) 3159c66ac9dbSNicholas Bellinger { 3160c66ac9dbSNicholas Bellinger struct t10_alua *alua = container_of(group, struct t10_alua, 3161c66ac9dbSNicholas Bellinger alua_tg_pt_gps_group); 3162c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 3163c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = NULL; 3164c66ac9dbSNicholas Bellinger struct config_item *alua_tg_pt_gp_ci = NULL; 3165c66ac9dbSNicholas Bellinger 31660fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); 31676708bb27SAndy Grover if (!tg_pt_gp) 3168c66ac9dbSNicholas Bellinger return NULL; 3169c66ac9dbSNicholas Bellinger 3170c66ac9dbSNicholas Bellinger alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 3171c66ac9dbSNicholas Bellinger alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 3172c66ac9dbSNicholas Bellinger 3173c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_tg_pt_gp_cg, name, 3174c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_cit); 3175c66ac9dbSNicholas Bellinger 31766708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 3177c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s\n", 3178c66ac9dbSNicholas Bellinger config_item_name(alua_tg_pt_gp_ci)); 3179c66ac9dbSNicholas Bellinger 3180c66ac9dbSNicholas Bellinger return alua_tg_pt_gp_cg; 3181c66ac9dbSNicholas Bellinger } 3182c66ac9dbSNicholas Bellinger 3183c66ac9dbSNicholas Bellinger static void target_core_alua_drop_tg_pt_gp( 3184c66ac9dbSNicholas Bellinger struct config_group *group, 3185c66ac9dbSNicholas Bellinger struct config_item *item) 3186c66ac9dbSNicholas Bellinger { 3187c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 3188c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 3189c66ac9dbSNicholas Bellinger 31906708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 3191c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s, ID: %hu\n", 3192c66ac9dbSNicholas Bellinger config_item_name(item), tg_pt_gp->tg_pt_gp_id); 31931f6fe7cbSNicholas Bellinger /* 31941f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 31951f6fe7cbSNicholas Bellinger * -> target_core_alua_tg_pt_gp_release(). 31961f6fe7cbSNicholas Bellinger */ 3197c66ac9dbSNicholas Bellinger config_item_put(item); 3198c66ac9dbSNicholas Bellinger } 3199c66ac9dbSNicholas Bellinger 3200c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 3201c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_tg_pt_gp, 3202c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_tg_pt_gp, 3203c66ac9dbSNicholas Bellinger }; 3204c66ac9dbSNicholas Bellinger 320572aca57bSNicholas Bellinger TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); 3206c66ac9dbSNicholas Bellinger 320772aca57bSNicholas Bellinger /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 3208c66ac9dbSNicholas Bellinger 3209c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_cit */ 3210c66ac9dbSNicholas Bellinger 3211c66ac9dbSNicholas Bellinger /* 3212c66ac9dbSNicholas Bellinger * target_core_alua_cit is a ConfigFS group that lives under 3213c66ac9dbSNicholas Bellinger * /sys/kernel/config/target/core/alua. There are default groups 3214c66ac9dbSNicholas Bellinger * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 3215c66ac9dbSNicholas Bellinger * target_core_alua_cit in target_core_init_configfs() below. 3216c66ac9dbSNicholas Bellinger */ 3217ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_cit = { 3218c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3219c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3220c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3221c66ac9dbSNicholas Bellinger }; 3222c66ac9dbSNicholas Bellinger 3223c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_cit */ 3224c66ac9dbSNicholas Bellinger 3225d23ab570SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_stat_cit */ 322612d23384SNicholas Bellinger 322712d23384SNicholas Bellinger static struct config_group *target_core_stat_mkdir( 322812d23384SNicholas Bellinger struct config_group *group, 322912d23384SNicholas Bellinger const char *name) 323012d23384SNicholas Bellinger { 323112d23384SNicholas Bellinger return ERR_PTR(-ENOSYS); 323212d23384SNicholas Bellinger } 323312d23384SNicholas Bellinger 323412d23384SNicholas Bellinger static void target_core_stat_rmdir( 323512d23384SNicholas Bellinger struct config_group *group, 323612d23384SNicholas Bellinger struct config_item *item) 323712d23384SNicholas Bellinger { 323812d23384SNicholas Bellinger return; 323912d23384SNicholas Bellinger } 324012d23384SNicholas Bellinger 324112d23384SNicholas Bellinger static struct configfs_group_operations target_core_stat_group_ops = { 324212d23384SNicholas Bellinger .make_group = &target_core_stat_mkdir, 324312d23384SNicholas Bellinger .drop_item = &target_core_stat_rmdir, 324412d23384SNicholas Bellinger }; 324512d23384SNicholas Bellinger 3246d23ab570SNicholas Bellinger TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); 324712d23384SNicholas Bellinger 3248d23ab570SNicholas Bellinger /* End functions for struct config_item_type tb_dev_stat_cit */ 324912d23384SNicholas Bellinger 3250c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_hba_cit */ 3251c66ac9dbSNicholas Bellinger 3252c66ac9dbSNicholas Bellinger static struct config_group *target_core_make_subdev( 3253c66ac9dbSNicholas Bellinger struct config_group *group, 3254c66ac9dbSNicholas Bellinger const char *name) 3255c66ac9dbSNicholas Bellinger { 3256c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 3257c66ac9dbSNicholas Bellinger struct config_item *hba_ci = &group->cg_item; 3258c66ac9dbSNicholas Bellinger struct se_hba *hba = item_to_hba(hba_ci); 32590a06d430SChristoph Hellwig struct target_backend *tb = hba->backend; 32600fd97ccfSChristoph Hellwig struct se_device *dev; 326112d23384SNicholas Bellinger int errno = -ENOMEM, ret; 3262c66ac9dbSNicholas Bellinger 326312d23384SNicholas Bellinger ret = mutex_lock_interruptible(&hba->hba_access_mutex); 326412d23384SNicholas Bellinger if (ret) 326512d23384SNicholas Bellinger return ERR_PTR(ret); 3266c66ac9dbSNicholas Bellinger 32670fd97ccfSChristoph Hellwig dev = target_alloc_device(hba, name); 32680fd97ccfSChristoph Hellwig if (!dev) 32690fd97ccfSChristoph Hellwig goto out_unlock; 3270c66ac9dbSNicholas Bellinger 32711ae1602dSChristoph Hellwig config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit); 3272c66ac9dbSNicholas Bellinger 32738dc31ff9SMike Christie config_group_init_type_name(&dev->dev_action_group, "action", 32748dc31ff9SMike Christie &tb->tb_dev_action_cit); 32758dc31ff9SMike Christie configfs_add_default_group(&dev->dev_action_group, &dev->dev_group); 32768dc31ff9SMike Christie 32770fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", 32780a06d430SChristoph Hellwig &tb->tb_dev_attrib_cit); 32791ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group); 32801ae1602dSChristoph Hellwig 32810fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_pr_group, "pr", 32820a06d430SChristoph Hellwig &tb->tb_dev_pr_cit); 32831ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_pr_group, &dev->dev_group); 32841ae1602dSChristoph Hellwig 32850fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", 32860a06d430SChristoph Hellwig &tb->tb_dev_wwn_cit); 32871ae1602dSChristoph Hellwig configfs_add_default_group(&dev->t10_wwn.t10_wwn_group, 32881ae1602dSChristoph Hellwig &dev->dev_group); 32891ae1602dSChristoph Hellwig 32900fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, 32910a06d430SChristoph Hellwig "alua", &tb->tb_dev_alua_tg_pt_gps_cit); 32921ae1602dSChristoph Hellwig configfs_add_default_group(&dev->t10_alua.alua_tg_pt_gps_group, 32931ae1602dSChristoph Hellwig &dev->dev_group); 32941ae1602dSChristoph Hellwig 32950fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_stat_grps.stat_group, 32960a06d430SChristoph Hellwig "statistics", &tb->tb_dev_stat_cit); 32971ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_stat_grps.stat_group, 32981ae1602dSChristoph Hellwig &dev->dev_group); 329912d23384SNicholas Bellinger 3300c66ac9dbSNicholas Bellinger /* 330112d23384SNicholas Bellinger * Add core/$HBA/$DEV/alua/default_tg_pt_gp 3302c66ac9dbSNicholas Bellinger */ 33030fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); 33046708bb27SAndy Grover if (!tg_pt_gp) 33051ae1602dSChristoph Hellwig goto out_free_device; 33060fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 3307c66ac9dbSNicholas Bellinger 3308c66ac9dbSNicholas Bellinger config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 3309c66ac9dbSNicholas Bellinger "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 33101ae1602dSChristoph Hellwig configfs_add_default_group(&tg_pt_gp->tg_pt_gp_group, 33111ae1602dSChristoph Hellwig &dev->t10_alua.alua_tg_pt_gps_group); 33121ae1602dSChristoph Hellwig 331312d23384SNicholas Bellinger /* 331412d23384SNicholas Bellinger * Add core/$HBA/$DEV/statistics/ default groups 331512d23384SNicholas Bellinger */ 33160fd97ccfSChristoph Hellwig target_stat_setup_dev_default_groups(dev); 3317c66ac9dbSNicholas Bellinger 3318c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 33191ae1602dSChristoph Hellwig return &dev->dev_group; 33200fd97ccfSChristoph Hellwig 33210fd97ccfSChristoph Hellwig out_free_device: 33220fd97ccfSChristoph Hellwig target_free_device(dev); 33230fd97ccfSChristoph Hellwig out_unlock: 3324c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 332512d23384SNicholas Bellinger return ERR_PTR(errno); 3326c66ac9dbSNicholas Bellinger } 3327c66ac9dbSNicholas Bellinger 3328c66ac9dbSNicholas Bellinger static void target_core_drop_subdev( 3329c66ac9dbSNicholas Bellinger struct config_group *group, 3330c66ac9dbSNicholas Bellinger struct config_item *item) 3331c66ac9dbSNicholas Bellinger { 33320fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 33330fd97ccfSChristoph Hellwig struct se_device *dev = 33340fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 3335c66ac9dbSNicholas Bellinger struct se_hba *hba; 3336c66ac9dbSNicholas Bellinger 33370fd97ccfSChristoph Hellwig hba = item_to_hba(&dev->se_hba->hba_group.cg_item); 3338c66ac9dbSNicholas Bellinger 33391f6fe7cbSNicholas Bellinger mutex_lock(&hba->hba_access_mutex); 3340c66ac9dbSNicholas Bellinger 33411ae1602dSChristoph Hellwig configfs_remove_default_groups(&dev->dev_stat_grps.stat_group); 33421ae1602dSChristoph Hellwig configfs_remove_default_groups(&dev->t10_alua.alua_tg_pt_gps_group); 334312d23384SNicholas Bellinger 33441f6fe7cbSNicholas Bellinger /* 33451f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 33461f6fe7cbSNicholas Bellinger * directly from target_core_alua_tg_pt_gp_release(). 33471f6fe7cbSNicholas Bellinger */ 33480fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = NULL; 3349c66ac9dbSNicholas Bellinger 33501ae1602dSChristoph Hellwig configfs_remove_default_groups(dev_cg); 33511ae1602dSChristoph Hellwig 33521f6fe7cbSNicholas Bellinger /* 33530fd97ccfSChristoph Hellwig * se_dev is released from target_core_dev_item_ops->release() 33541f6fe7cbSNicholas Bellinger */ 3355c66ac9dbSNicholas Bellinger config_item_put(item); 3356c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 3357c66ac9dbSNicholas Bellinger } 3358c66ac9dbSNicholas Bellinger 3359c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_hba_group_ops = { 3360c66ac9dbSNicholas Bellinger .make_group = target_core_make_subdev, 3361c66ac9dbSNicholas Bellinger .drop_item = target_core_drop_subdev, 3362c66ac9dbSNicholas Bellinger }; 3363c66ac9dbSNicholas Bellinger 3364c66ac9dbSNicholas Bellinger 33652eafd729SChristoph Hellwig static inline struct se_hba *to_hba(struct config_item *item) 3366c66ac9dbSNicholas Bellinger { 33672eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_hba, hba_group); 33682eafd729SChristoph Hellwig } 33692eafd729SChristoph Hellwig 33702eafd729SChristoph Hellwig static ssize_t target_hba_info_show(struct config_item *item, char *page) 33712eafd729SChristoph Hellwig { 33722eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 33732eafd729SChristoph Hellwig 3374c66ac9dbSNicholas Bellinger return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 33750a06d430SChristoph Hellwig hba->hba_id, hba->backend->ops->name, 3376ce8dd25dSChristoph Hellwig TARGET_CORE_VERSION); 3377c66ac9dbSNicholas Bellinger } 3378c66ac9dbSNicholas Bellinger 33792eafd729SChristoph Hellwig static ssize_t target_hba_mode_show(struct config_item *item, char *page) 3380c66ac9dbSNicholas Bellinger { 33812eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 3382c66ac9dbSNicholas Bellinger int hba_mode = 0; 3383c66ac9dbSNicholas Bellinger 3384c66ac9dbSNicholas Bellinger if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 3385c66ac9dbSNicholas Bellinger hba_mode = 1; 3386c66ac9dbSNicholas Bellinger 3387c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", hba_mode); 3388c66ac9dbSNicholas Bellinger } 3389c66ac9dbSNicholas Bellinger 33902eafd729SChristoph Hellwig static ssize_t target_hba_mode_store(struct config_item *item, 3391c66ac9dbSNicholas Bellinger const char *page, size_t count) 3392c66ac9dbSNicholas Bellinger { 33932eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 3394c66ac9dbSNicholas Bellinger unsigned long mode_flag; 3395c66ac9dbSNicholas Bellinger int ret; 3396c66ac9dbSNicholas Bellinger 33970a06d430SChristoph Hellwig if (hba->backend->ops->pmode_enable_hba == NULL) 3398c66ac9dbSNicholas Bellinger return -EINVAL; 3399c66ac9dbSNicholas Bellinger 340057103d7fSJingoo Han ret = kstrtoul(page, 0, &mode_flag); 3401c66ac9dbSNicholas Bellinger if (ret < 0) { 34026708bb27SAndy Grover pr_err("Unable to extract hba mode flag: %d\n", ret); 340357103d7fSJingoo Han return ret; 3404c66ac9dbSNicholas Bellinger } 3405c66ac9dbSNicholas Bellinger 34060fd97ccfSChristoph Hellwig if (hba->dev_count) { 34076708bb27SAndy Grover pr_err("Unable to set hba_mode with active devices\n"); 3408c66ac9dbSNicholas Bellinger return -EINVAL; 3409c66ac9dbSNicholas Bellinger } 3410c66ac9dbSNicholas Bellinger 34110a06d430SChristoph Hellwig ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag); 3412c66ac9dbSNicholas Bellinger if (ret < 0) 3413c66ac9dbSNicholas Bellinger return -EINVAL; 3414c66ac9dbSNicholas Bellinger if (ret > 0) 3415c66ac9dbSNicholas Bellinger hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 3416c66ac9dbSNicholas Bellinger else if (ret == 0) 3417c66ac9dbSNicholas Bellinger hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 3418c66ac9dbSNicholas Bellinger 3419c66ac9dbSNicholas Bellinger return count; 3420c66ac9dbSNicholas Bellinger } 3421c66ac9dbSNicholas Bellinger 34222eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_, hba_info); 34232eafd729SChristoph Hellwig CONFIGFS_ATTR(target_, hba_mode); 3424c66ac9dbSNicholas Bellinger 34251f6fe7cbSNicholas Bellinger static void target_core_hba_release(struct config_item *item) 34261f6fe7cbSNicholas Bellinger { 34271f6fe7cbSNicholas Bellinger struct se_hba *hba = container_of(to_config_group(item), 34281f6fe7cbSNicholas Bellinger struct se_hba, hba_group); 34291f6fe7cbSNicholas Bellinger core_delete_hba(hba); 34301f6fe7cbSNicholas Bellinger } 34311f6fe7cbSNicholas Bellinger 3432c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_hba_attrs[] = { 34332eafd729SChristoph Hellwig &target_attr_hba_info, 34342eafd729SChristoph Hellwig &target_attr_hba_mode, 3435c66ac9dbSNicholas Bellinger NULL, 3436c66ac9dbSNicholas Bellinger }; 3437c66ac9dbSNicholas Bellinger 3438c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_hba_item_ops = { 34391f6fe7cbSNicholas Bellinger .release = target_core_hba_release, 3440c66ac9dbSNicholas Bellinger }; 3441c66ac9dbSNicholas Bellinger 3442ece550b5SBhumika Goyal static const struct config_item_type target_core_hba_cit = { 3443c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_hba_item_ops, 3444c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_hba_group_ops, 3445c66ac9dbSNicholas Bellinger .ct_attrs = target_core_hba_attrs, 3446c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3447c66ac9dbSNicholas Bellinger }; 3448c66ac9dbSNicholas Bellinger 3449c66ac9dbSNicholas Bellinger static struct config_group *target_core_call_addhbatotarget( 3450c66ac9dbSNicholas Bellinger struct config_group *group, 3451c66ac9dbSNicholas Bellinger const char *name) 3452c66ac9dbSNicholas Bellinger { 3453c66ac9dbSNicholas Bellinger char *se_plugin_str, *str, *str2; 3454c66ac9dbSNicholas Bellinger struct se_hba *hba; 34552d4e2dafSChaitanya Kulkarni char buf[TARGET_CORE_NAME_MAX_LEN] = { }; 3456c66ac9dbSNicholas Bellinger unsigned long plugin_dep_id = 0; 3457c66ac9dbSNicholas Bellinger int ret; 3458c66ac9dbSNicholas Bellinger 345960d645a4SDan Carpenter if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 34606708bb27SAndy Grover pr_err("Passed *name strlen(): %d exceeds" 3461c66ac9dbSNicholas Bellinger " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 3462c66ac9dbSNicholas Bellinger TARGET_CORE_NAME_MAX_LEN); 3463c66ac9dbSNicholas Bellinger return ERR_PTR(-ENAMETOOLONG); 3464c66ac9dbSNicholas Bellinger } 3465c66ac9dbSNicholas Bellinger snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 3466c66ac9dbSNicholas Bellinger 3467c66ac9dbSNicholas Bellinger str = strstr(buf, "_"); 34686708bb27SAndy Grover if (!str) { 34696708bb27SAndy Grover pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 3470c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 3471c66ac9dbSNicholas Bellinger } 3472c66ac9dbSNicholas Bellinger se_plugin_str = buf; 3473c66ac9dbSNicholas Bellinger /* 3474c66ac9dbSNicholas Bellinger * Special case for subsystem plugins that have "_" in their names. 3475c66ac9dbSNicholas Bellinger * Namely rd_direct and rd_mcp.. 3476c66ac9dbSNicholas Bellinger */ 3477c66ac9dbSNicholas Bellinger str2 = strstr(str+1, "_"); 34786708bb27SAndy Grover if (str2) { 3479c66ac9dbSNicholas Bellinger *str2 = '\0'; /* Terminate for *se_plugin_str */ 3480c66ac9dbSNicholas Bellinger str2++; /* Skip to start of plugin dependent ID */ 3481c66ac9dbSNicholas Bellinger str = str2; 3482c66ac9dbSNicholas Bellinger } else { 3483c66ac9dbSNicholas Bellinger *str = '\0'; /* Terminate for *se_plugin_str */ 3484c66ac9dbSNicholas Bellinger str++; /* Skip to start of plugin dependent ID */ 3485c66ac9dbSNicholas Bellinger } 3486c66ac9dbSNicholas Bellinger 348757103d7fSJingoo Han ret = kstrtoul(str, 0, &plugin_dep_id); 3488c66ac9dbSNicholas Bellinger if (ret < 0) { 348957103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 3490c66ac9dbSNicholas Bellinger " plugin_dep_id\n", ret); 349157103d7fSJingoo Han return ERR_PTR(ret); 3492c66ac9dbSNicholas Bellinger } 3493c66ac9dbSNicholas Bellinger /* 3494c66ac9dbSNicholas Bellinger * Load up TCM subsystem plugins if they have not already been loaded. 3495c66ac9dbSNicholas Bellinger */ 3496dbc5623eSNicholas Bellinger transport_subsystem_check_init(); 3497c66ac9dbSNicholas Bellinger 3498c66ac9dbSNicholas Bellinger hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 3499c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 3500c66ac9dbSNicholas Bellinger return ERR_CAST(hba); 3501c66ac9dbSNicholas Bellinger 3502c66ac9dbSNicholas Bellinger config_group_init_type_name(&hba->hba_group, name, 3503c66ac9dbSNicholas Bellinger &target_core_hba_cit); 3504c66ac9dbSNicholas Bellinger 3505c66ac9dbSNicholas Bellinger return &hba->hba_group; 3506c66ac9dbSNicholas Bellinger } 3507c66ac9dbSNicholas Bellinger 3508c66ac9dbSNicholas Bellinger static void target_core_call_delhbafromtarget( 3509c66ac9dbSNicholas Bellinger struct config_group *group, 3510c66ac9dbSNicholas Bellinger struct config_item *item) 3511c66ac9dbSNicholas Bellinger { 35121f6fe7cbSNicholas Bellinger /* 35131f6fe7cbSNicholas Bellinger * core_delete_hba() is called from target_core_hba_item_ops->release() 35141f6fe7cbSNicholas Bellinger * -> target_core_hba_release() 35151f6fe7cbSNicholas Bellinger */ 3516c66ac9dbSNicholas Bellinger config_item_put(item); 3517c66ac9dbSNicholas Bellinger } 3518c66ac9dbSNicholas Bellinger 3519c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_group_ops = { 3520c66ac9dbSNicholas Bellinger .make_group = target_core_call_addhbatotarget, 3521c66ac9dbSNicholas Bellinger .drop_item = target_core_call_delhbafromtarget, 3522c66ac9dbSNicholas Bellinger }; 3523c66ac9dbSNicholas Bellinger 3524ece550b5SBhumika Goyal static const struct config_item_type target_core_cit = { 3525c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3526c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_group_ops, 3527c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3528c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3529c66ac9dbSNicholas Bellinger }; 3530c66ac9dbSNicholas Bellinger 3531c66ac9dbSNicholas Bellinger /* Stop functions for struct config_item_type target_core_hba_cit */ 3532c66ac9dbSNicholas Bellinger 35330a06d430SChristoph Hellwig void target_setup_backend_cits(struct target_backend *tb) 353473112edcSNicholas Bellinger { 35350a06d430SChristoph Hellwig target_core_setup_dev_cit(tb); 35368dc31ff9SMike Christie target_core_setup_dev_action_cit(tb); 35370a06d430SChristoph Hellwig target_core_setup_dev_attrib_cit(tb); 35380a06d430SChristoph Hellwig target_core_setup_dev_pr_cit(tb); 35390a06d430SChristoph Hellwig target_core_setup_dev_wwn_cit(tb); 35400a06d430SChristoph Hellwig target_core_setup_dev_alua_tg_pt_gps_cit(tb); 35410a06d430SChristoph Hellwig target_core_setup_dev_stat_cit(tb); 354273112edcSNicholas Bellinger } 354373112edcSNicholas Bellinger 354478a6295cSLee Duncan static void target_init_dbroot(void) 354578a6295cSLee Duncan { 354678a6295cSLee Duncan struct file *fp; 354778a6295cSLee Duncan 354878a6295cSLee Duncan snprintf(db_root_stage, DB_ROOT_LEN, DB_ROOT_PREFERRED); 354978a6295cSLee Duncan fp = filp_open(db_root_stage, O_RDONLY, 0); 355078a6295cSLee Duncan if (IS_ERR(fp)) { 355178a6295cSLee Duncan pr_err("db_root: cannot open: %s\n", db_root_stage); 355278a6295cSLee Duncan return; 355378a6295cSLee Duncan } 355478a6295cSLee Duncan if (!S_ISDIR(file_inode(fp)->i_mode)) { 355578a6295cSLee Duncan filp_close(fp, NULL); 355678a6295cSLee Duncan pr_err("db_root: not a valid directory: %s\n", db_root_stage); 355778a6295cSLee Duncan return; 355878a6295cSLee Duncan } 355978a6295cSLee Duncan filp_close(fp, NULL); 356078a6295cSLee Duncan 356178a6295cSLee Duncan strncpy(db_root, db_root_stage, DB_ROOT_LEN); 356278a6295cSLee Duncan pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); 356378a6295cSLee Duncan } 356478a6295cSLee Duncan 356554550fabSAxel Lin static int __init target_core_init_configfs(void) 3566c66ac9dbSNicholas Bellinger { 3567d588cf8fSChristoph Hellwig struct configfs_subsystem *subsys = &target_core_fabrics; 3568c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 3569c66ac9dbSNicholas Bellinger int ret; 3570c66ac9dbSNicholas Bellinger 35716708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 3572c66ac9dbSNicholas Bellinger " Engine: %s on %s/%s on "UTS_RELEASE"\n", 3573c66ac9dbSNicholas Bellinger TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 3574c66ac9dbSNicholas Bellinger 3575c66ac9dbSNicholas Bellinger config_group_init(&subsys->su_group); 3576c66ac9dbSNicholas Bellinger mutex_init(&subsys->su_mutex); 3577c66ac9dbSNicholas Bellinger 3578e3d6f909SAndy Grover ret = init_se_kmem_caches(); 3579c66ac9dbSNicholas Bellinger if (ret < 0) 3580e3d6f909SAndy Grover return ret; 3581c66ac9dbSNicholas Bellinger /* 3582c66ac9dbSNicholas Bellinger * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 3583c66ac9dbSNicholas Bellinger * and ALUA Logical Unit Group and Target Port Group infrastructure. 3584c66ac9dbSNicholas Bellinger */ 35851ae1602dSChristoph Hellwig config_group_init_type_name(&target_core_hbagroup, "core", 35861ae1602dSChristoph Hellwig &target_core_cit); 35871ae1602dSChristoph Hellwig configfs_add_default_group(&target_core_hbagroup, &subsys->su_group); 3588c66ac9dbSNicholas Bellinger 3589c66ac9dbSNicholas Bellinger /* 3590c66ac9dbSNicholas Bellinger * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 3591c66ac9dbSNicholas Bellinger */ 35921ae1602dSChristoph Hellwig config_group_init_type_name(&alua_group, "alua", &target_core_alua_cit); 35931ae1602dSChristoph Hellwig configfs_add_default_group(&alua_group, &target_core_hbagroup); 35941ae1602dSChristoph Hellwig 3595c66ac9dbSNicholas Bellinger /* 3596c66ac9dbSNicholas Bellinger * Add ALUA Logical Unit Group and Target Port Group ConfigFS 3597c66ac9dbSNicholas Bellinger * groups under /sys/kernel/config/target/core/alua/ 3598c66ac9dbSNicholas Bellinger */ 35991ae1602dSChristoph Hellwig config_group_init_type_name(&alua_lu_gps_group, "lu_gps", 36001ae1602dSChristoph Hellwig &target_core_alua_lu_gps_cit); 36011ae1602dSChristoph Hellwig configfs_add_default_group(&alua_lu_gps_group, &alua_group); 3602c66ac9dbSNicholas Bellinger 3603c66ac9dbSNicholas Bellinger /* 3604c66ac9dbSNicholas Bellinger * Add core/alua/lu_gps/default_lu_gp 3605c66ac9dbSNicholas Bellinger */ 3606c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 360737bb7899SPeter Senna Tschudin if (IS_ERR(lu_gp)) { 360837bb7899SPeter Senna Tschudin ret = -ENOMEM; 3609c66ac9dbSNicholas Bellinger goto out_global; 361037bb7899SPeter Senna Tschudin } 3611c66ac9dbSNicholas Bellinger 3612c66ac9dbSNicholas Bellinger config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 3613c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 36141ae1602dSChristoph Hellwig configfs_add_default_group(&lu_gp->lu_gp_group, &alua_lu_gps_group); 36151ae1602dSChristoph Hellwig 3616e3d6f909SAndy Grover default_lu_gp = lu_gp; 36171ae1602dSChristoph Hellwig 3618c66ac9dbSNicholas Bellinger /* 3619c66ac9dbSNicholas Bellinger * Register the target_core_mod subsystem with configfs. 3620c66ac9dbSNicholas Bellinger */ 3621c66ac9dbSNicholas Bellinger ret = configfs_register_subsystem(subsys); 3622c66ac9dbSNicholas Bellinger if (ret < 0) { 36236708bb27SAndy Grover pr_err("Error %d while registering subsystem %s\n", 3624c66ac9dbSNicholas Bellinger ret, subsys->su_group.cg_item.ci_namebuf); 3625c66ac9dbSNicholas Bellinger goto out_global; 3626c66ac9dbSNicholas Bellinger } 36276708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 3628ce8dd25dSChristoph Hellwig " Infrastructure: "TARGET_CORE_VERSION" on %s/%s" 3629c66ac9dbSNicholas Bellinger " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 3630c66ac9dbSNicholas Bellinger /* 3631c66ac9dbSNicholas Bellinger * Register built-in RAMDISK subsystem logic for virtual LUN 0 3632c66ac9dbSNicholas Bellinger */ 3633c66ac9dbSNicholas Bellinger ret = rd_module_init(); 3634c66ac9dbSNicholas Bellinger if (ret < 0) 3635c66ac9dbSNicholas Bellinger goto out; 3636c66ac9dbSNicholas Bellinger 36370d0f9dfbSRoland Dreier ret = core_dev_setup_virtual_lun0(); 36380d0f9dfbSRoland Dreier if (ret < 0) 3639c66ac9dbSNicholas Bellinger goto out; 3640c66ac9dbSNicholas Bellinger 3641f99715acSNicholas Bellinger ret = target_xcopy_setup_pt(); 3642f99715acSNicholas Bellinger if (ret < 0) 3643f99715acSNicholas Bellinger goto out; 3644f99715acSNicholas Bellinger 364578a6295cSLee Duncan target_init_dbroot(); 364678a6295cSLee Duncan 3647c66ac9dbSNicholas Bellinger return 0; 3648c66ac9dbSNicholas Bellinger 3649c66ac9dbSNicholas Bellinger out: 3650c66ac9dbSNicholas Bellinger configfs_unregister_subsystem(subsys); 3651c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3652c66ac9dbSNicholas Bellinger rd_module_exit(); 3653c66ac9dbSNicholas Bellinger out_global: 3654e3d6f909SAndy Grover if (default_lu_gp) { 3655e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3656e3d6f909SAndy Grover default_lu_gp = NULL; 3657c66ac9dbSNicholas Bellinger } 3658e3d6f909SAndy Grover release_se_kmem_caches(); 3659e3d6f909SAndy Grover return ret; 3660c66ac9dbSNicholas Bellinger } 3661c66ac9dbSNicholas Bellinger 366254550fabSAxel Lin static void __exit target_core_exit_configfs(void) 3663c66ac9dbSNicholas Bellinger { 36641ae1602dSChristoph Hellwig configfs_remove_default_groups(&alua_lu_gps_group); 36651ae1602dSChristoph Hellwig configfs_remove_default_groups(&alua_group); 36661ae1602dSChristoph Hellwig configfs_remove_default_groups(&target_core_hbagroup); 3667c66ac9dbSNicholas Bellinger 36687c2bf6e9SNicholas Bellinger /* 36697c2bf6e9SNicholas Bellinger * We expect subsys->su_group.default_groups to be released 36707c2bf6e9SNicholas Bellinger * by configfs subsystem provider logic.. 36717c2bf6e9SNicholas Bellinger */ 3672d588cf8fSChristoph Hellwig configfs_unregister_subsystem(&target_core_fabrics); 3673c66ac9dbSNicholas Bellinger 3674e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3675e3d6f909SAndy Grover default_lu_gp = NULL; 36767c2bf6e9SNicholas Bellinger 36776708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3678c66ac9dbSNicholas Bellinger " Infrastructure\n"); 3679c66ac9dbSNicholas Bellinger 3680c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3681c66ac9dbSNicholas Bellinger rd_module_exit(); 3682f99715acSNicholas Bellinger target_xcopy_release_pt(); 3683e3d6f909SAndy Grover release_se_kmem_caches(); 3684c66ac9dbSNicholas Bellinger } 3685c66ac9dbSNicholas Bellinger 3686c66ac9dbSNicholas Bellinger MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3687c66ac9dbSNicholas Bellinger MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3688c66ac9dbSNicholas Bellinger MODULE_LICENSE("GPL"); 3689c66ac9dbSNicholas Bellinger 3690c66ac9dbSNicholas Bellinger module_init(target_core_init_configfs); 3691c66ac9dbSNicholas Bellinger module_exit(target_core_exit_configfs); 3692