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); 1102c17d5d5fSMike Christie u8 flags = da->da_dev->transport->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 1108c17d5d5fSMike Christie static ssize_t pgr_support_show(struct config_item *item, char *page) 1109c17d5d5fSMike Christie { 1110c17d5d5fSMike Christie struct se_dev_attrib *da = to_attrib(item); 1111c17d5d5fSMike Christie u8 flags = da->da_dev->transport->transport_flags; 1112c17d5d5fSMike Christie 1113c17d5d5fSMike Christie return snprintf(page, PAGE_SIZE, "%d\n", 1114c17d5d5fSMike Christie flags & TRANSPORT_FLAG_PASSTHROUGH_PGR ? 0 : 1); 1115c17d5d5fSMike Christie } 1116c17d5d5fSMike Christie 11172eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_model_alias); 11182eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_dpo); 11192eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_fua_write); 11202eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_fua_read); 11212eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_write_cache); 11222eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_ua_intlck_ctrl); 11232eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tas); 11242eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tpu); 11252eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tpws); 11262eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_caw); 11272eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_3pc); 1128b49d6f78SDavid Disseldorp CONFIGFS_ATTR(, emulate_pr); 11292eafd729SChristoph Hellwig CONFIGFS_ATTR(, pi_prot_type); 11302eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_pi_prot_type); 1131b6cd7f34SDavid Disseldorp CONFIGFS_ATTR(, pi_prot_format); 1132056e8924SDmitry Monakhov CONFIGFS_ATTR(, pi_prot_verify); 11332eafd729SChristoph Hellwig CONFIGFS_ATTR(, enforce_pr_isids); 11342eafd729SChristoph Hellwig CONFIGFS_ATTR(, is_nonrot); 11352eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_rest_reord); 11362eafd729SChristoph Hellwig CONFIGFS_ATTR(, force_pr_aptpl); 11372eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_block_size); 11382eafd729SChristoph Hellwig CONFIGFS_ATTR(, block_size); 11392eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_max_sectors); 11402eafd729SChristoph Hellwig CONFIGFS_ATTR(, optimal_sectors); 11412eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_queue_depth); 11422eafd729SChristoph Hellwig CONFIGFS_ATTR(, queue_depth); 11432eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_unmap_lba_count); 11442eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_unmap_block_desc_count); 11452eafd729SChristoph Hellwig CONFIGFS_ATTR(, unmap_granularity); 11462eafd729SChristoph Hellwig CONFIGFS_ATTR(, unmap_granularity_alignment); 1147e6f41633SJamie Pocas CONFIGFS_ATTR(, unmap_zeroes_data); 11482eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_write_same_len); 1149c17d5d5fSMike Christie CONFIGFS_ATTR_RO(, alua_support); 1150c17d5d5fSMike Christie CONFIGFS_ATTR_RO(, pgr_support); 1151c66ac9dbSNicholas Bellinger 11525873c4d1SChristoph Hellwig /* 11535873c4d1SChristoph Hellwig * dev_attrib attributes for devices using the target core SBC/SPC 11545873c4d1SChristoph Hellwig * interpreter. Any backend using spc_parse_cdb should be using 11555873c4d1SChristoph Hellwig * these. 11565873c4d1SChristoph Hellwig */ 11575873c4d1SChristoph Hellwig struct configfs_attribute *sbc_attrib_attrs[] = { 11582eafd729SChristoph Hellwig &attr_emulate_model_alias, 11592eafd729SChristoph Hellwig &attr_emulate_dpo, 11602eafd729SChristoph Hellwig &attr_emulate_fua_write, 11612eafd729SChristoph Hellwig &attr_emulate_fua_read, 11622eafd729SChristoph Hellwig &attr_emulate_write_cache, 11632eafd729SChristoph Hellwig &attr_emulate_ua_intlck_ctrl, 11642eafd729SChristoph Hellwig &attr_emulate_tas, 11652eafd729SChristoph Hellwig &attr_emulate_tpu, 11662eafd729SChristoph Hellwig &attr_emulate_tpws, 11672eafd729SChristoph Hellwig &attr_emulate_caw, 11682eafd729SChristoph Hellwig &attr_emulate_3pc, 1169b49d6f78SDavid Disseldorp &attr_emulate_pr, 11702eafd729SChristoph Hellwig &attr_pi_prot_type, 11712eafd729SChristoph Hellwig &attr_hw_pi_prot_type, 11722eafd729SChristoph Hellwig &attr_pi_prot_format, 1173056e8924SDmitry Monakhov &attr_pi_prot_verify, 11742eafd729SChristoph Hellwig &attr_enforce_pr_isids, 11752eafd729SChristoph Hellwig &attr_is_nonrot, 11762eafd729SChristoph Hellwig &attr_emulate_rest_reord, 11772eafd729SChristoph Hellwig &attr_force_pr_aptpl, 11782eafd729SChristoph Hellwig &attr_hw_block_size, 11792eafd729SChristoph Hellwig &attr_block_size, 11802eafd729SChristoph Hellwig &attr_hw_max_sectors, 11812eafd729SChristoph Hellwig &attr_optimal_sectors, 11822eafd729SChristoph Hellwig &attr_hw_queue_depth, 11832eafd729SChristoph Hellwig &attr_queue_depth, 11842eafd729SChristoph Hellwig &attr_max_unmap_lba_count, 11852eafd729SChristoph Hellwig &attr_max_unmap_block_desc_count, 11862eafd729SChristoph Hellwig &attr_unmap_granularity, 11872eafd729SChristoph Hellwig &attr_unmap_granularity_alignment, 1188e6f41633SJamie Pocas &attr_unmap_zeroes_data, 11892eafd729SChristoph Hellwig &attr_max_write_same_len, 1190c17d5d5fSMike Christie &attr_alua_support, 1191c17d5d5fSMike Christie &attr_pgr_support, 11925873c4d1SChristoph Hellwig NULL, 11935873c4d1SChristoph Hellwig }; 11945873c4d1SChristoph Hellwig EXPORT_SYMBOL(sbc_attrib_attrs); 11955873c4d1SChristoph Hellwig 11965873c4d1SChristoph Hellwig /* 11975873c4d1SChristoph Hellwig * Minimal dev_attrib attributes for devices passing through CDBs. 11985873c4d1SChristoph Hellwig * In this case we only provide a few read-only attributes for 11995873c4d1SChristoph Hellwig * backwards compatibility. 12005873c4d1SChristoph Hellwig */ 12015873c4d1SChristoph Hellwig struct configfs_attribute *passthrough_attrib_attrs[] = { 12022eafd729SChristoph Hellwig &attr_hw_pi_prot_type, 12032eafd729SChristoph Hellwig &attr_hw_block_size, 12042eafd729SChristoph Hellwig &attr_hw_max_sectors, 12052eafd729SChristoph Hellwig &attr_hw_queue_depth, 120692999417SBodo Stroesser &attr_emulate_pr, 1207c17d5d5fSMike Christie &attr_alua_support, 1208c17d5d5fSMike Christie &attr_pgr_support, 12095873c4d1SChristoph Hellwig NULL, 12105873c4d1SChristoph Hellwig }; 12115873c4d1SChristoph Hellwig EXPORT_SYMBOL(passthrough_attrib_attrs); 12125873c4d1SChristoph Hellwig 12134703b625SBodo Stroesser /* 12144703b625SBodo Stroesser * pr related dev_attrib attributes for devices passing through CDBs, 12154703b625SBodo Stroesser * but allowing in core pr emulation. 12164703b625SBodo Stroesser */ 12174703b625SBodo Stroesser struct configfs_attribute *passthrough_pr_attrib_attrs[] = { 12184703b625SBodo Stroesser &attr_enforce_pr_isids, 12194703b625SBodo Stroesser &attr_force_pr_aptpl, 12204703b625SBodo Stroesser NULL, 12214703b625SBodo Stroesser }; 12224703b625SBodo Stroesser EXPORT_SYMBOL(passthrough_pr_attrib_attrs); 12234703b625SBodo Stroesser 12242eafd729SChristoph Hellwig TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL); 12258dc31ff9SMike Christie TB_CIT_SETUP_DRV(dev_action, NULL, NULL); 1226c66ac9dbSNicholas Bellinger 1227f79a897eSNicholas Bellinger /* End functions for struct config_item_type tb_dev_attrib_cit */ 1228c66ac9dbSNicholas Bellinger 1229f8d389c6SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_wwn_cit */ 1230c66ac9dbSNicholas Bellinger 12312eafd729SChristoph Hellwig static struct t10_wwn *to_t10_wwn(struct config_item *item) 12322eafd729SChristoph Hellwig { 12332eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group); 12342eafd729SChristoph Hellwig } 1235c66ac9dbSNicholas Bellinger 12360322913cSAlan Adamson static ssize_t target_check_inquiry_data(char *buf) 12370322913cSAlan Adamson { 12380322913cSAlan Adamson size_t len; 12390322913cSAlan Adamson int i; 12400322913cSAlan Adamson 12410322913cSAlan Adamson len = strlen(buf); 12420322913cSAlan Adamson 12430322913cSAlan Adamson /* 12440322913cSAlan Adamson * SPC 4.3.1: 12450322913cSAlan Adamson * ASCII data fields shall contain only ASCII printable characters 12460322913cSAlan Adamson * (i.e., code values 20h to 7Eh) and may be terminated with one or 12470322913cSAlan Adamson * more ASCII null (00h) characters. 12480322913cSAlan Adamson */ 12490322913cSAlan Adamson for (i = 0; i < len; i++) { 12500322913cSAlan Adamson if (buf[i] < 0x20 || buf[i] > 0x7E) { 12510322913cSAlan Adamson pr_err("Emulated T10 Inquiry Data contains non-ASCII-printable characters\n"); 12520322913cSAlan Adamson return -EINVAL; 12530322913cSAlan Adamson } 12540322913cSAlan Adamson } 12550322913cSAlan Adamson 12560322913cSAlan Adamson return len; 12570322913cSAlan Adamson } 12580322913cSAlan Adamson 1259c66ac9dbSNicholas Bellinger /* 126054a6f3f6SDavid Disseldorp * STANDARD and VPD page 0x83 T10 Vendor Identification 126154a6f3f6SDavid Disseldorp */ 126254a6f3f6SDavid Disseldorp static ssize_t target_wwn_vendor_id_show(struct config_item *item, 126354a6f3f6SDavid Disseldorp char *page) 126454a6f3f6SDavid Disseldorp { 126554a6f3f6SDavid Disseldorp return sprintf(page, "%s\n", &to_t10_wwn(item)->vendor[0]); 126654a6f3f6SDavid Disseldorp } 126754a6f3f6SDavid Disseldorp 126854a6f3f6SDavid Disseldorp static ssize_t target_wwn_vendor_id_store(struct config_item *item, 126954a6f3f6SDavid Disseldorp const char *page, size_t count) 127054a6f3f6SDavid Disseldorp { 127154a6f3f6SDavid Disseldorp struct t10_wwn *t10_wwn = to_t10_wwn(item); 127254a6f3f6SDavid Disseldorp struct se_device *dev = t10_wwn->t10_dev; 127354a6f3f6SDavid Disseldorp /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ 127454a6f3f6SDavid Disseldorp unsigned char buf[INQUIRY_VENDOR_LEN + 2]; 127554a6f3f6SDavid Disseldorp char *stripped = NULL; 1276ee26724aSColin Ian King size_t len; 1277ee26724aSColin Ian King ssize_t ret; 127854a6f3f6SDavid Disseldorp 127954a6f3f6SDavid Disseldorp len = strlcpy(buf, page, sizeof(buf)); 128054a6f3f6SDavid Disseldorp if (len < sizeof(buf)) { 128154a6f3f6SDavid Disseldorp /* Strip any newline added from userspace. */ 128254a6f3f6SDavid Disseldorp stripped = strstrip(buf); 128354a6f3f6SDavid Disseldorp len = strlen(stripped); 128454a6f3f6SDavid Disseldorp } 128554a6f3f6SDavid Disseldorp if (len > INQUIRY_VENDOR_LEN) { 128654a6f3f6SDavid Disseldorp pr_err("Emulated T10 Vendor Identification exceeds" 128754a6f3f6SDavid Disseldorp " INQUIRY_VENDOR_LEN: " __stringify(INQUIRY_VENDOR_LEN) 128854a6f3f6SDavid Disseldorp "\n"); 128954a6f3f6SDavid Disseldorp return -EOVERFLOW; 129054a6f3f6SDavid Disseldorp } 129154a6f3f6SDavid Disseldorp 12920322913cSAlan Adamson ret = target_check_inquiry_data(stripped); 12930322913cSAlan Adamson 12940322913cSAlan Adamson if (ret < 0) 12950322913cSAlan Adamson return ret; 129654a6f3f6SDavid Disseldorp 129754a6f3f6SDavid Disseldorp /* 129854a6f3f6SDavid Disseldorp * Check to see if any active exports exist. If they do exist, fail 129954a6f3f6SDavid Disseldorp * here as changing this information on the fly (underneath the 130054a6f3f6SDavid Disseldorp * initiator side OS dependent multipath code) could cause negative 130154a6f3f6SDavid Disseldorp * effects. 130254a6f3f6SDavid Disseldorp */ 130354a6f3f6SDavid Disseldorp if (dev->export_count) { 130454a6f3f6SDavid Disseldorp pr_err("Unable to set T10 Vendor Identification while" 130554a6f3f6SDavid Disseldorp " active %d exports exist\n", dev->export_count); 130654a6f3f6SDavid Disseldorp return -EINVAL; 130754a6f3f6SDavid Disseldorp } 130854a6f3f6SDavid Disseldorp 130954a6f3f6SDavid Disseldorp BUILD_BUG_ON(sizeof(dev->t10_wwn.vendor) != INQUIRY_VENDOR_LEN + 1); 131054a6f3f6SDavid Disseldorp strlcpy(dev->t10_wwn.vendor, stripped, sizeof(dev->t10_wwn.vendor)); 131154a6f3f6SDavid Disseldorp 131254a6f3f6SDavid Disseldorp pr_debug("Target_Core_ConfigFS: Set emulated T10 Vendor Identification:" 131354a6f3f6SDavid Disseldorp " %s\n", dev->t10_wwn.vendor); 131454a6f3f6SDavid Disseldorp 131554a6f3f6SDavid Disseldorp return count; 131654a6f3f6SDavid Disseldorp } 131754a6f3f6SDavid Disseldorp 13180322913cSAlan Adamson static ssize_t target_wwn_product_id_show(struct config_item *item, 13190322913cSAlan Adamson char *page) 13200322913cSAlan Adamson { 13210322913cSAlan Adamson return sprintf(page, "%s\n", &to_t10_wwn(item)->model[0]); 13220322913cSAlan Adamson } 13230322913cSAlan Adamson 13240322913cSAlan Adamson static ssize_t target_wwn_product_id_store(struct config_item *item, 13250322913cSAlan Adamson const char *page, size_t count) 13260322913cSAlan Adamson { 13270322913cSAlan Adamson struct t10_wwn *t10_wwn = to_t10_wwn(item); 13280322913cSAlan Adamson struct se_device *dev = t10_wwn->t10_dev; 13290322913cSAlan Adamson /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ 13300322913cSAlan Adamson unsigned char buf[INQUIRY_MODEL_LEN + 2]; 13310322913cSAlan Adamson char *stripped = NULL; 1332ee26724aSColin Ian King size_t len; 1333ee26724aSColin Ian King ssize_t ret; 13340322913cSAlan Adamson 13350322913cSAlan Adamson len = strlcpy(buf, page, sizeof(buf)); 13360322913cSAlan Adamson if (len < sizeof(buf)) { 13370322913cSAlan Adamson /* Strip any newline added from userspace. */ 13380322913cSAlan Adamson stripped = strstrip(buf); 13390322913cSAlan Adamson len = strlen(stripped); 13400322913cSAlan Adamson } 13410322913cSAlan Adamson if (len > INQUIRY_MODEL_LEN) { 13420322913cSAlan Adamson pr_err("Emulated T10 Vendor exceeds INQUIRY_MODEL_LEN: " 13430322913cSAlan Adamson __stringify(INQUIRY_MODEL_LEN) 13440322913cSAlan Adamson "\n"); 13450322913cSAlan Adamson return -EOVERFLOW; 13460322913cSAlan Adamson } 13470322913cSAlan Adamson 13480322913cSAlan Adamson ret = target_check_inquiry_data(stripped); 13490322913cSAlan Adamson 13500322913cSAlan Adamson if (ret < 0) 13510322913cSAlan Adamson return ret; 13520322913cSAlan Adamson 13530322913cSAlan Adamson /* 13540322913cSAlan Adamson * Check to see if any active exports exist. If they do exist, fail 13550322913cSAlan Adamson * here as changing this information on the fly (underneath the 13560322913cSAlan Adamson * initiator side OS dependent multipath code) could cause negative 13570322913cSAlan Adamson * effects. 13580322913cSAlan Adamson */ 13590322913cSAlan Adamson if (dev->export_count) { 13600322913cSAlan Adamson pr_err("Unable to set T10 Model while active %d exports exist\n", 13610322913cSAlan Adamson dev->export_count); 13620322913cSAlan Adamson return -EINVAL; 13630322913cSAlan Adamson } 13640322913cSAlan Adamson 13650322913cSAlan Adamson BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); 13660322913cSAlan Adamson strlcpy(dev->t10_wwn.model, stripped, sizeof(dev->t10_wwn.model)); 13670322913cSAlan Adamson 13680322913cSAlan Adamson pr_debug("Target_Core_ConfigFS: Set emulated T10 Model Identification: %s\n", 13690322913cSAlan Adamson dev->t10_wwn.model); 13700322913cSAlan Adamson 13710322913cSAlan Adamson return count; 13720322913cSAlan Adamson } 13730322913cSAlan Adamson 13740322913cSAlan Adamson static ssize_t target_wwn_revision_show(struct config_item *item, 13750322913cSAlan Adamson char *page) 13760322913cSAlan Adamson { 13770322913cSAlan Adamson return sprintf(page, "%s\n", &to_t10_wwn(item)->revision[0]); 13780322913cSAlan Adamson } 13790322913cSAlan Adamson 13800322913cSAlan Adamson static ssize_t target_wwn_revision_store(struct config_item *item, 13810322913cSAlan Adamson const char *page, size_t count) 13820322913cSAlan Adamson { 13830322913cSAlan Adamson struct t10_wwn *t10_wwn = to_t10_wwn(item); 13840322913cSAlan Adamson struct se_device *dev = t10_wwn->t10_dev; 13850322913cSAlan Adamson /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ 13860322913cSAlan Adamson unsigned char buf[INQUIRY_REVISION_LEN + 2]; 13870322913cSAlan Adamson char *stripped = NULL; 1388ee26724aSColin Ian King size_t len; 1389ee26724aSColin Ian King ssize_t ret; 13900322913cSAlan Adamson 13910322913cSAlan Adamson len = strlcpy(buf, page, sizeof(buf)); 13920322913cSAlan Adamson if (len < sizeof(buf)) { 13930322913cSAlan Adamson /* Strip any newline added from userspace. */ 13940322913cSAlan Adamson stripped = strstrip(buf); 13950322913cSAlan Adamson len = strlen(stripped); 13960322913cSAlan Adamson } 13970322913cSAlan Adamson if (len > INQUIRY_REVISION_LEN) { 13980322913cSAlan Adamson pr_err("Emulated T10 Revision exceeds INQUIRY_REVISION_LEN: " 13990322913cSAlan Adamson __stringify(INQUIRY_REVISION_LEN) 14000322913cSAlan Adamson "\n"); 14010322913cSAlan Adamson return -EOVERFLOW; 14020322913cSAlan Adamson } 14030322913cSAlan Adamson 14040322913cSAlan Adamson ret = target_check_inquiry_data(stripped); 14050322913cSAlan Adamson 14060322913cSAlan Adamson if (ret < 0) 14070322913cSAlan Adamson return ret; 14080322913cSAlan Adamson 14090322913cSAlan Adamson /* 14100322913cSAlan Adamson * Check to see if any active exports exist. If they do exist, fail 14110322913cSAlan Adamson * here as changing this information on the fly (underneath the 14120322913cSAlan Adamson * initiator side OS dependent multipath code) could cause negative 14130322913cSAlan Adamson * effects. 14140322913cSAlan Adamson */ 14150322913cSAlan Adamson if (dev->export_count) { 14160322913cSAlan Adamson pr_err("Unable to set T10 Revision while active %d exports exist\n", 14170322913cSAlan Adamson dev->export_count); 14180322913cSAlan Adamson return -EINVAL; 14190322913cSAlan Adamson } 14200322913cSAlan Adamson 14210322913cSAlan Adamson BUILD_BUG_ON(sizeof(dev->t10_wwn.revision) != INQUIRY_REVISION_LEN + 1); 14220322913cSAlan Adamson strlcpy(dev->t10_wwn.revision, stripped, sizeof(dev->t10_wwn.revision)); 14230322913cSAlan Adamson 14240322913cSAlan Adamson pr_debug("Target_Core_ConfigFS: Set emulated T10 Revision: %s\n", 14250322913cSAlan Adamson dev->t10_wwn.revision); 14260322913cSAlan Adamson 14270322913cSAlan Adamson return count; 14280322913cSAlan Adamson } 14290322913cSAlan Adamson 143054a6f3f6SDavid Disseldorp /* 1431c66ac9dbSNicholas Bellinger * VPD page 0x80 Unit serial 1432c66ac9dbSNicholas Bellinger */ 14332eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item, 1434c66ac9dbSNicholas Bellinger char *page) 1435c66ac9dbSNicholas Bellinger { 1436c66ac9dbSNicholas Bellinger return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 14372eafd729SChristoph Hellwig &to_t10_wwn(item)->unit_serial[0]); 1438c66ac9dbSNicholas Bellinger } 1439c66ac9dbSNicholas Bellinger 14402eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_unit_serial_store(struct config_item *item, 14412eafd729SChristoph Hellwig const char *page, size_t count) 1442c66ac9dbSNicholas Bellinger { 14432eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); 14440fd97ccfSChristoph Hellwig struct se_device *dev = t10_wwn->t10_dev; 1445c66ac9dbSNicholas Bellinger unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; 1446c66ac9dbSNicholas Bellinger 1447c66ac9dbSNicholas Bellinger /* 1448c66ac9dbSNicholas Bellinger * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 1449c66ac9dbSNicholas Bellinger * from the struct scsi_device level firmware, do not allow 1450c66ac9dbSNicholas Bellinger * VPD Unit Serial to be emulated. 1451c66ac9dbSNicholas Bellinger * 1452c66ac9dbSNicholas Bellinger * Note this struct scsi_device could also be emulating VPD 1453c66ac9dbSNicholas Bellinger * information from its drivers/scsi LLD. But for now we assume 1454c66ac9dbSNicholas Bellinger * it is doing 'the right thing' wrt a world wide unique 1455c66ac9dbSNicholas Bellinger * VPD Unit Serial Number that OS dependent multipath can depend on. 1456c66ac9dbSNicholas Bellinger */ 14570fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { 14586708bb27SAndy Grover pr_err("Underlying SCSI device firmware provided VPD" 1459c66ac9dbSNicholas Bellinger " Unit Serial, ignoring request\n"); 1460c66ac9dbSNicholas Bellinger return -EOPNOTSUPP; 1461c66ac9dbSNicholas Bellinger } 1462c66ac9dbSNicholas Bellinger 146360d645a4SDan Carpenter if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 14646708bb27SAndy Grover pr_err("Emulated VPD Unit Serial exceeds" 1465c66ac9dbSNicholas Bellinger " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 1466c66ac9dbSNicholas Bellinger return -EOVERFLOW; 1467c66ac9dbSNicholas Bellinger } 1468c66ac9dbSNicholas Bellinger /* 1469c66ac9dbSNicholas Bellinger * Check to see if any active $FABRIC_MOD exports exist. If they 1470c66ac9dbSNicholas Bellinger * do exist, fail here as changing this information on the fly 1471c66ac9dbSNicholas Bellinger * (underneath the initiator side OS dependent multipath code) 1472c66ac9dbSNicholas Bellinger * could cause negative effects. 1473c66ac9dbSNicholas Bellinger */ 14740fd97ccfSChristoph Hellwig if (dev->export_count) { 14756708bb27SAndy Grover pr_err("Unable to set VPD Unit Serial while" 1476c66ac9dbSNicholas Bellinger " active %d $FABRIC_MOD exports exist\n", 14770fd97ccfSChristoph Hellwig dev->export_count); 1478c66ac9dbSNicholas Bellinger return -EINVAL; 1479c66ac9dbSNicholas Bellinger } 14800fd97ccfSChristoph Hellwig 1481c66ac9dbSNicholas Bellinger /* 1482c66ac9dbSNicholas Bellinger * This currently assumes ASCII encoding for emulated VPD Unit Serial. 1483c66ac9dbSNicholas Bellinger * 1484c66ac9dbSNicholas Bellinger * Also, strip any newline added from the userspace 1485c66ac9dbSNicholas Bellinger * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 1486c66ac9dbSNicholas Bellinger */ 1487c66ac9dbSNicholas Bellinger memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); 1488c66ac9dbSNicholas Bellinger snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 14890fd97ccfSChristoph Hellwig snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 1490c66ac9dbSNicholas Bellinger "%s", strstrip(buf)); 14910fd97ccfSChristoph Hellwig dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; 1492c66ac9dbSNicholas Bellinger 14936708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 14940fd97ccfSChristoph Hellwig " %s\n", dev->t10_wwn.unit_serial); 1495c66ac9dbSNicholas Bellinger 1496c66ac9dbSNicholas Bellinger return count; 1497c66ac9dbSNicholas Bellinger } 1498c66ac9dbSNicholas Bellinger 1499c66ac9dbSNicholas Bellinger /* 1500c66ac9dbSNicholas Bellinger * VPD page 0x83 Protocol Identifier 1501c66ac9dbSNicholas Bellinger */ 15022eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_protocol_identifier_show(struct config_item *item, 1503c66ac9dbSNicholas Bellinger char *page) 1504c66ac9dbSNicholas Bellinger { 15052eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); 1506c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; 1507c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; 1508c66ac9dbSNicholas Bellinger ssize_t len = 0; 1509c66ac9dbSNicholas Bellinger 1510c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); 1511c66ac9dbSNicholas Bellinger 1512c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); 1513c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 15146708bb27SAndy Grover if (!vpd->protocol_identifier_set) 1515c66ac9dbSNicholas Bellinger continue; 1516c66ac9dbSNicholas Bellinger 1517c66ac9dbSNicholas Bellinger transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 1518c66ac9dbSNicholas Bellinger 15196708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1520c66ac9dbSNicholas Bellinger break; 1521c66ac9dbSNicholas Bellinger 1522c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1523c66ac9dbSNicholas Bellinger } 1524c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); 1525c66ac9dbSNicholas Bellinger 1526c66ac9dbSNicholas Bellinger return len; 1527c66ac9dbSNicholas Bellinger } 1528c66ac9dbSNicholas Bellinger 1529c66ac9dbSNicholas Bellinger /* 1530c66ac9dbSNicholas Bellinger * Generic wrapper for dumping VPD identifiers by association. 1531c66ac9dbSNicholas Bellinger */ 1532c66ac9dbSNicholas Bellinger #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 15332eafd729SChristoph Hellwig static ssize_t target_wwn_##_name##_show(struct config_item *item, \ 1534c66ac9dbSNicholas Bellinger char *page) \ 1535c66ac9dbSNicholas Bellinger { \ 15362eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); \ 1537c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; \ 1538c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; \ 1539c66ac9dbSNicholas Bellinger ssize_t len = 0; \ 1540c66ac9dbSNicholas Bellinger \ 1541c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); \ 1542c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 1543c66ac9dbSNicholas Bellinger if (vpd->association != _assoc) \ 1544c66ac9dbSNicholas Bellinger continue; \ 1545c66ac9dbSNicholas Bellinger \ 1546c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1547c66ac9dbSNicholas Bellinger transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 15486708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1549c66ac9dbSNicholas Bellinger break; \ 1550c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1551c66ac9dbSNicholas Bellinger \ 1552c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1553c66ac9dbSNicholas Bellinger transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 15546708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1555c66ac9dbSNicholas Bellinger break; \ 1556c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1557c66ac9dbSNicholas Bellinger \ 1558c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1559c66ac9dbSNicholas Bellinger transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 15606708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1561c66ac9dbSNicholas Bellinger break; \ 1562c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1563c66ac9dbSNicholas Bellinger } \ 1564c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); \ 1565c66ac9dbSNicholas Bellinger \ 1566c66ac9dbSNicholas Bellinger return len; \ 1567c66ac9dbSNicholas Bellinger } 1568c66ac9dbSNicholas Bellinger 15692eafd729SChristoph Hellwig /* VPD page 0x83 Association: Logical Unit */ 1570c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 15712eafd729SChristoph Hellwig /* VPD page 0x83 Association: Target Port */ 1572c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 15732eafd729SChristoph Hellwig /* VPD page 0x83 Association: SCSI Target Device */ 1574c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 1575c66ac9dbSNicholas Bellinger 157654a6f3f6SDavid Disseldorp CONFIGFS_ATTR(target_wwn_, vendor_id); 15770322913cSAlan Adamson CONFIGFS_ATTR(target_wwn_, product_id); 15780322913cSAlan Adamson CONFIGFS_ATTR(target_wwn_, revision); 15792eafd729SChristoph Hellwig CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); 15802eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); 15812eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); 15822eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port); 15832eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); 1584c66ac9dbSNicholas Bellinger 1585c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 158654a6f3f6SDavid Disseldorp &target_wwn_attr_vendor_id, 15870322913cSAlan Adamson &target_wwn_attr_product_id, 15880322913cSAlan Adamson &target_wwn_attr_revision, 15892eafd729SChristoph Hellwig &target_wwn_attr_vpd_unit_serial, 15902eafd729SChristoph Hellwig &target_wwn_attr_vpd_protocol_identifier, 15912eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_logical_unit, 15922eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_target_port, 15932eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_scsi_target_device, 1594c66ac9dbSNicholas Bellinger NULL, 1595c66ac9dbSNicholas Bellinger }; 1596c66ac9dbSNicholas Bellinger 15972eafd729SChristoph Hellwig TB_CIT_SETUP(dev_wwn, NULL, NULL, target_core_dev_wwn_attrs); 1598c66ac9dbSNicholas Bellinger 1599f8d389c6SNicholas Bellinger /* End functions for struct config_item_type tb_dev_wwn_cit */ 1600c66ac9dbSNicholas Bellinger 160191e2e39bSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_pr_cit */ 1602c66ac9dbSNicholas Bellinger 16032eafd729SChristoph Hellwig static struct se_device *pr_to_dev(struct config_item *item) 16042eafd729SChristoph Hellwig { 16052eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_device, 16062eafd729SChristoph Hellwig dev_pr_group); 16072eafd729SChristoph Hellwig } 1608c66ac9dbSNicholas Bellinger 1609d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, 1610d977f437SChristoph Hellwig char *page) 1611c66ac9dbSNicholas Bellinger { 1612c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1613c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1614c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1615c66ac9dbSNicholas Bellinger 1616c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1617c66ac9dbSNicholas Bellinger 1618c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1619d977f437SChristoph Hellwig if (!pr_reg) 1620d977f437SChristoph Hellwig return sprintf(page, "No SPC-3 Reservation holder\n"); 1621d977f437SChristoph Hellwig 1622c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1623d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); 1624c66ac9dbSNicholas Bellinger 1625d977f437SChristoph Hellwig return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", 162630c7ca93SDavid Disseldorp se_nacl->se_tpg->se_tpg_tfo->fabric_name, 1627d2843c17SAndy Grover se_nacl->initiatorname, i_buf); 1628c66ac9dbSNicholas Bellinger } 1629c66ac9dbSNicholas Bellinger 1630d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 1631d977f437SChristoph Hellwig char *page) 1632c66ac9dbSNicholas Bellinger { 1633fae43461SBart Van Assche struct se_session *sess = dev->reservation_holder; 1634c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1635d977f437SChristoph Hellwig ssize_t len; 1636c66ac9dbSNicholas Bellinger 1637fae43461SBart Van Assche if (sess) { 1638fae43461SBart Van Assche se_nacl = sess->se_node_acl; 1639d977f437SChristoph Hellwig len = sprintf(page, 1640d977f437SChristoph Hellwig "SPC-2 Reservation: %s Initiator: %s\n", 164130c7ca93SDavid Disseldorp se_nacl->se_tpg->se_tpg_tfo->fabric_name, 1642c66ac9dbSNicholas Bellinger se_nacl->initiatorname); 1643d977f437SChristoph Hellwig } else { 1644d977f437SChristoph Hellwig len = sprintf(page, "No SPC-2 Reservation holder\n"); 1645d977f437SChristoph Hellwig } 1646d977f437SChristoph Hellwig return len; 1647c66ac9dbSNicholas Bellinger } 1648c66ac9dbSNicholas Bellinger 16492eafd729SChristoph Hellwig static ssize_t target_pr_res_holder_show(struct config_item *item, char *page) 1650c66ac9dbSNicholas Bellinger { 16512eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1652d977f437SChristoph Hellwig int ret; 1653c66ac9dbSNicholas Bellinger 1654b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr) 1655b49d6f78SDavid Disseldorp return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); 1656b49d6f78SDavid Disseldorp 16574ec5bf0eSBryant G. Ly if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) 1658d977f437SChristoph Hellwig return sprintf(page, "Passthrough\n"); 1659c66ac9dbSNicholas Bellinger 1660d977f437SChristoph Hellwig spin_lock(&dev->dev_reservation_lock); 1661d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1662d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc2_res(dev, page); 1663d977f437SChristoph Hellwig else 1664d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc3_res(dev, page); 1665d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1666d977f437SChristoph Hellwig return ret; 1667c66ac9dbSNicholas Bellinger } 1668c66ac9dbSNicholas Bellinger 16692eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_all_tgt_pts_show(struct config_item *item, 16702eafd729SChristoph Hellwig char *page) 1671c66ac9dbSNicholas Bellinger { 16722eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1673c66ac9dbSNicholas Bellinger ssize_t len = 0; 1674c66ac9dbSNicholas Bellinger 1675c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1676d977f437SChristoph Hellwig if (!dev->dev_pr_res_holder) { 1677c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1678d977f437SChristoph Hellwig } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { 1679c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: All Target" 1680c66ac9dbSNicholas Bellinger " Ports registration\n"); 1681d977f437SChristoph Hellwig } else { 1682c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: Single" 1683c66ac9dbSNicholas Bellinger " Target Port registration\n"); 1684d977f437SChristoph Hellwig } 1685c66ac9dbSNicholas Bellinger 1686d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1687c66ac9dbSNicholas Bellinger return len; 1688c66ac9dbSNicholas Bellinger } 1689c66ac9dbSNicholas Bellinger 16902eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_generation_show(struct config_item *item, 16912eafd729SChristoph Hellwig char *page) 1692c66ac9dbSNicholas Bellinger { 16932eafd729SChristoph Hellwig return sprintf(page, "0x%08x\n", pr_to_dev(item)->t10_pr.pr_generation); 1694c66ac9dbSNicholas Bellinger } 1695c66ac9dbSNicholas Bellinger 1696c66ac9dbSNicholas Bellinger 16972eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item, 16982eafd729SChristoph Hellwig char *page) 1699c66ac9dbSNicholas Bellinger { 17002eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1701c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1702c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg; 1703c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 17049ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 1705c66ac9dbSNicholas Bellinger ssize_t len = 0; 1706c66ac9dbSNicholas Bellinger 1707c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1708c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 17096708bb27SAndy Grover if (!pr_reg) { 1710c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1711d977f437SChristoph Hellwig goto out_unlock; 1712c66ac9dbSNicholas Bellinger } 1713d977f437SChristoph Hellwig 1714c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1715c66ac9dbSNicholas Bellinger se_tpg = se_nacl->se_tpg; 1716e3d6f909SAndy Grover tfo = se_tpg->se_tpg_tfo; 1717c66ac9dbSNicholas Bellinger 1718c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: %s" 171930c7ca93SDavid Disseldorp " Target Node Endpoint: %s\n", tfo->fabric_name, 1720c66ac9dbSNicholas Bellinger tfo->tpg_get_wwn(se_tpg)); 1721c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 172235d1efe8SMasanari Iida " Identifier Tag: %hu %s Portal Group Tag: %hu" 1723f2d30680SHannes Reinecke " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi, 172430c7ca93SDavid Disseldorp tfo->fabric_name, tfo->tpg_get_tag(se_tpg), 172530c7ca93SDavid Disseldorp tfo->fabric_name, pr_reg->pr_aptpl_target_lun); 1726c66ac9dbSNicholas Bellinger 1727d977f437SChristoph Hellwig out_unlock: 1728d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1729c66ac9dbSNicholas Bellinger return len; 1730c66ac9dbSNicholas Bellinger } 1731c66ac9dbSNicholas Bellinger 1732c66ac9dbSNicholas Bellinger 17332eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item, 17342eafd729SChristoph Hellwig char *page) 1735c66ac9dbSNicholas Bellinger { 17362eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 17379ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 1738c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1739c66ac9dbSNicholas Bellinger unsigned char buf[384]; 1740c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1741c66ac9dbSNicholas Bellinger ssize_t len = 0; 1742d2843c17SAndy Grover int reg_count = 0; 1743c66ac9dbSNicholas Bellinger 1744c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 1745c66ac9dbSNicholas Bellinger 17460fd97ccfSChristoph Hellwig spin_lock(&dev->t10_pr.registration_lock); 17470fd97ccfSChristoph Hellwig list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, 1748c66ac9dbSNicholas Bellinger pr_reg_list) { 1749c66ac9dbSNicholas Bellinger 1750c66ac9dbSNicholas Bellinger memset(buf, 0, 384); 1751c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1752c66ac9dbSNicholas Bellinger tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1753d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, 1754c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 1755c66ac9dbSNicholas Bellinger sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 175630c7ca93SDavid Disseldorp tfo->fabric_name, 1757d2843c17SAndy Grover pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, 1758c66ac9dbSNicholas Bellinger pr_reg->pr_res_generation); 1759c66ac9dbSNicholas Bellinger 17606708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1761c66ac9dbSNicholas Bellinger break; 1762c66ac9dbSNicholas Bellinger 1763c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1764c66ac9dbSNicholas Bellinger reg_count++; 1765c66ac9dbSNicholas Bellinger } 17660fd97ccfSChristoph Hellwig spin_unlock(&dev->t10_pr.registration_lock); 1767c66ac9dbSNicholas Bellinger 17686708bb27SAndy Grover if (!reg_count) 1769c66ac9dbSNicholas Bellinger len += sprintf(page+len, "None\n"); 1770c66ac9dbSNicholas Bellinger 1771c66ac9dbSNicholas Bellinger return len; 1772c66ac9dbSNicholas Bellinger } 1773c66ac9dbSNicholas Bellinger 17742eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_type_show(struct config_item *item, char *page) 1775c66ac9dbSNicholas Bellinger { 17762eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1777c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1778c66ac9dbSNicholas Bellinger ssize_t len = 0; 1779c66ac9dbSNicholas Bellinger 1780c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1781c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1782d977f437SChristoph Hellwig if (pr_reg) { 1783c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1784c66ac9dbSNicholas Bellinger core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1785d977f437SChristoph Hellwig } else { 1786d977f437SChristoph Hellwig len = sprintf(page, "No SPC-3 Reservation holder\n"); 1787d977f437SChristoph Hellwig } 1788c66ac9dbSNicholas Bellinger 1789d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1790c66ac9dbSNicholas Bellinger return len; 1791c66ac9dbSNicholas Bellinger } 1792c66ac9dbSNicholas Bellinger 17932eafd729SChristoph Hellwig static ssize_t target_pr_res_type_show(struct config_item *item, char *page) 1794c66ac9dbSNicholas Bellinger { 17952eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 17962eafd729SChristoph Hellwig 1797b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr) 1798b49d6f78SDavid Disseldorp return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); 17994ec5bf0eSBryant G. Ly if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) 1800d977f437SChristoph Hellwig return sprintf(page, "SPC_PASSTHROUGH\n"); 1801b49d6f78SDavid Disseldorp if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1802d977f437SChristoph Hellwig return sprintf(page, "SPC2_RESERVATIONS\n"); 1803b49d6f78SDavid Disseldorp 1804d977f437SChristoph Hellwig return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1805c66ac9dbSNicholas Bellinger } 1806c66ac9dbSNicholas Bellinger 18072eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, 18082eafd729SChristoph Hellwig char *page) 1809c66ac9dbSNicholas Bellinger { 18102eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 18112eafd729SChristoph Hellwig 1812b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 1813b49d6f78SDavid Disseldorp (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 1814c66ac9dbSNicholas Bellinger return 0; 1815c66ac9dbSNicholas Bellinger 1816c66ac9dbSNicholas Bellinger return sprintf(page, "APTPL Bit Status: %s\n", 18170fd97ccfSChristoph Hellwig (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1818c66ac9dbSNicholas Bellinger } 1819c66ac9dbSNicholas Bellinger 18202eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item, 18212eafd729SChristoph Hellwig char *page) 1822c66ac9dbSNicholas Bellinger { 18232eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 18242eafd729SChristoph Hellwig 1825b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 1826b49d6f78SDavid Disseldorp (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 1827c66ac9dbSNicholas Bellinger return 0; 1828c66ac9dbSNicholas Bellinger 1829c66ac9dbSNicholas Bellinger return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1830c66ac9dbSNicholas Bellinger } 1831c66ac9dbSNicholas Bellinger 1832c66ac9dbSNicholas Bellinger enum { 1833c66ac9dbSNicholas Bellinger Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1834c66ac9dbSNicholas Bellinger Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1835c66ac9dbSNicholas Bellinger Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1836c66ac9dbSNicholas Bellinger Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1837c66ac9dbSNicholas Bellinger }; 1838c66ac9dbSNicholas Bellinger 1839c66ac9dbSNicholas Bellinger static match_table_t tokens = { 1840c66ac9dbSNicholas Bellinger {Opt_initiator_fabric, "initiator_fabric=%s"}, 1841c66ac9dbSNicholas Bellinger {Opt_initiator_node, "initiator_node=%s"}, 1842c66ac9dbSNicholas Bellinger {Opt_initiator_sid, "initiator_sid=%s"}, 1843c66ac9dbSNicholas Bellinger {Opt_sa_res_key, "sa_res_key=%s"}, 1844c66ac9dbSNicholas Bellinger {Opt_res_holder, "res_holder=%d"}, 1845c66ac9dbSNicholas Bellinger {Opt_res_type, "res_type=%d"}, 1846c66ac9dbSNicholas Bellinger {Opt_res_scope, "res_scope=%d"}, 1847c66ac9dbSNicholas Bellinger {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1848a2db857bStangwenji {Opt_mapped_lun, "mapped_lun=%u"}, 1849c66ac9dbSNicholas Bellinger {Opt_target_fabric, "target_fabric=%s"}, 1850c66ac9dbSNicholas Bellinger {Opt_target_node, "target_node=%s"}, 1851c66ac9dbSNicholas Bellinger {Opt_tpgt, "tpgt=%d"}, 1852c66ac9dbSNicholas Bellinger {Opt_port_rtpi, "port_rtpi=%d"}, 1853a2db857bStangwenji {Opt_target_lun, "target_lun=%u"}, 1854c66ac9dbSNicholas Bellinger {Opt_err, NULL} 1855c66ac9dbSNicholas Bellinger }; 1856c66ac9dbSNicholas Bellinger 18572eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item, 18582eafd729SChristoph Hellwig const char *page, size_t count) 1859c66ac9dbSNicholas Bellinger { 18602eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 18616d180253SJesper Juhl unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 18626d180253SJesper Juhl unsigned char *t_fabric = NULL, *t_port = NULL; 18638d213559SJoern Engel char *orig, *ptr, *opts; 1864c66ac9dbSNicholas Bellinger substring_t args[MAX_OPT_ARGS]; 1865c66ac9dbSNicholas Bellinger unsigned long long tmp_ll; 1866c66ac9dbSNicholas Bellinger u64 sa_res_key = 0; 1867f2d30680SHannes Reinecke u64 mapped_lun = 0, target_lun = 0; 1868c66ac9dbSNicholas Bellinger int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 186945fb94c2SBart Van Assche u16 tpgt = 0; 187045fb94c2SBart Van Assche u8 type = 0; 1871c66ac9dbSNicholas Bellinger 1872b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 1873b49d6f78SDavid Disseldorp (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 18749105bfc0SAndy Grover return count; 1875d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 18769105bfc0SAndy Grover return count; 1877c66ac9dbSNicholas Bellinger 18780fd97ccfSChristoph Hellwig if (dev->export_count) { 18796708bb27SAndy Grover pr_debug("Unable to process APTPL metadata while" 1880c66ac9dbSNicholas Bellinger " active fabric exports exist\n"); 1881c66ac9dbSNicholas Bellinger return -EINVAL; 1882c66ac9dbSNicholas Bellinger } 1883c66ac9dbSNicholas Bellinger 1884c66ac9dbSNicholas Bellinger opts = kstrdup(page, GFP_KERNEL); 1885c66ac9dbSNicholas Bellinger if (!opts) 1886c66ac9dbSNicholas Bellinger return -ENOMEM; 1887c66ac9dbSNicholas Bellinger 1888c66ac9dbSNicholas Bellinger orig = opts; 188990c161b6SSebastian Andrzej Siewior while ((ptr = strsep(&opts, ",\n")) != NULL) { 1890c66ac9dbSNicholas Bellinger if (!*ptr) 1891c66ac9dbSNicholas Bellinger continue; 1892c66ac9dbSNicholas Bellinger 1893c66ac9dbSNicholas Bellinger token = match_token(ptr, tokens, args); 1894c66ac9dbSNicholas Bellinger switch (token) { 1895c66ac9dbSNicholas Bellinger case Opt_initiator_fabric: 18968d213559SJoern Engel i_fabric = match_strdup(args); 18976d180253SJesper Juhl if (!i_fabric) { 18986d180253SJesper Juhl ret = -ENOMEM; 18996d180253SJesper Juhl goto out; 19006d180253SJesper Juhl } 1901c66ac9dbSNicholas Bellinger break; 1902c66ac9dbSNicholas Bellinger case Opt_initiator_node: 19038d213559SJoern Engel i_port = match_strdup(args); 19046d180253SJesper Juhl if (!i_port) { 19056d180253SJesper Juhl ret = -ENOMEM; 19066d180253SJesper Juhl goto out; 19076d180253SJesper Juhl } 190860d645a4SDan Carpenter if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 19096708bb27SAndy Grover pr_err("APTPL metadata initiator_node=" 1910c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 1911c66ac9dbSNicholas Bellinger PR_APTPL_MAX_IPORT_LEN); 1912c66ac9dbSNicholas Bellinger ret = -EINVAL; 1913c66ac9dbSNicholas Bellinger break; 1914c66ac9dbSNicholas Bellinger } 1915c66ac9dbSNicholas Bellinger break; 1916c66ac9dbSNicholas Bellinger case Opt_initiator_sid: 19178d213559SJoern Engel isid = match_strdup(args); 19186d180253SJesper Juhl if (!isid) { 19196d180253SJesper Juhl ret = -ENOMEM; 19206d180253SJesper Juhl goto out; 19216d180253SJesper Juhl } 192260d645a4SDan Carpenter if (strlen(isid) >= PR_REG_ISID_LEN) { 19236708bb27SAndy Grover pr_err("APTPL metadata initiator_isid" 1924c66ac9dbSNicholas Bellinger "= exceeds PR_REG_ISID_LEN: %d\n", 1925c66ac9dbSNicholas Bellinger PR_REG_ISID_LEN); 1926c66ac9dbSNicholas Bellinger ret = -EINVAL; 1927c66ac9dbSNicholas Bellinger break; 1928c66ac9dbSNicholas Bellinger } 1929c66ac9dbSNicholas Bellinger break; 1930c66ac9dbSNicholas Bellinger case Opt_sa_res_key: 1931a2db857bStangwenji ret = match_u64(args, &tmp_ll); 1932c66ac9dbSNicholas Bellinger if (ret < 0) { 19338d213559SJoern Engel pr_err("kstrtoull() failed for sa_res_key=\n"); 1934c66ac9dbSNicholas Bellinger goto out; 1935c66ac9dbSNicholas Bellinger } 1936c66ac9dbSNicholas Bellinger sa_res_key = (u64)tmp_ll; 1937c66ac9dbSNicholas Bellinger break; 1938c66ac9dbSNicholas Bellinger /* 1939c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Reservation 1940c66ac9dbSNicholas Bellinger */ 1941c66ac9dbSNicholas Bellinger case Opt_res_holder: 1942c2091026SDavid Disseldorp ret = match_int(args, &arg); 1943c2091026SDavid Disseldorp if (ret) 1944c2091026SDavid Disseldorp goto out; 1945c66ac9dbSNicholas Bellinger res_holder = arg; 1946c66ac9dbSNicholas Bellinger break; 1947c66ac9dbSNicholas Bellinger case Opt_res_type: 1948c2091026SDavid Disseldorp ret = match_int(args, &arg); 1949c2091026SDavid Disseldorp if (ret) 1950c2091026SDavid Disseldorp goto out; 1951c66ac9dbSNicholas Bellinger type = (u8)arg; 1952c66ac9dbSNicholas Bellinger break; 1953c66ac9dbSNicholas Bellinger case Opt_res_scope: 1954c2091026SDavid Disseldorp ret = match_int(args, &arg); 1955c2091026SDavid Disseldorp if (ret) 1956c2091026SDavid Disseldorp goto out; 1957c66ac9dbSNicholas Bellinger break; 1958c66ac9dbSNicholas Bellinger case Opt_res_all_tg_pt: 1959c2091026SDavid Disseldorp ret = match_int(args, &arg); 1960c2091026SDavid Disseldorp if (ret) 1961c2091026SDavid Disseldorp goto out; 1962c66ac9dbSNicholas Bellinger all_tg_pt = (int)arg; 1963c66ac9dbSNicholas Bellinger break; 1964c66ac9dbSNicholas Bellinger case Opt_mapped_lun: 1965a2db857bStangwenji ret = match_u64(args, &tmp_ll); 1966c2091026SDavid Disseldorp if (ret) 1967c2091026SDavid Disseldorp goto out; 1968a2db857bStangwenji mapped_lun = (u64)tmp_ll; 1969c66ac9dbSNicholas Bellinger break; 1970c66ac9dbSNicholas Bellinger /* 1971c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Target Port 1972c66ac9dbSNicholas Bellinger */ 1973c66ac9dbSNicholas Bellinger case Opt_target_fabric: 19748d213559SJoern Engel t_fabric = match_strdup(args); 19756d180253SJesper Juhl if (!t_fabric) { 19766d180253SJesper Juhl ret = -ENOMEM; 19776d180253SJesper Juhl goto out; 19786d180253SJesper Juhl } 1979c66ac9dbSNicholas Bellinger break; 1980c66ac9dbSNicholas Bellinger case Opt_target_node: 19818d213559SJoern Engel t_port = match_strdup(args); 19826d180253SJesper Juhl if (!t_port) { 19836d180253SJesper Juhl ret = -ENOMEM; 19846d180253SJesper Juhl goto out; 19856d180253SJesper Juhl } 198660d645a4SDan Carpenter if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 19876708bb27SAndy Grover pr_err("APTPL metadata target_node=" 1988c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 1989c66ac9dbSNicholas Bellinger PR_APTPL_MAX_TPORT_LEN); 1990c66ac9dbSNicholas Bellinger ret = -EINVAL; 1991c66ac9dbSNicholas Bellinger break; 1992c66ac9dbSNicholas Bellinger } 1993c66ac9dbSNicholas Bellinger break; 1994c66ac9dbSNicholas Bellinger case Opt_tpgt: 1995c2091026SDavid Disseldorp ret = match_int(args, &arg); 1996c2091026SDavid Disseldorp if (ret) 1997c2091026SDavid Disseldorp goto out; 1998c66ac9dbSNicholas Bellinger tpgt = (u16)arg; 1999c66ac9dbSNicholas Bellinger break; 2000c66ac9dbSNicholas Bellinger case Opt_port_rtpi: 2001c2091026SDavid Disseldorp ret = match_int(args, &arg); 2002c2091026SDavid Disseldorp if (ret) 2003c2091026SDavid Disseldorp goto out; 2004c66ac9dbSNicholas Bellinger break; 2005c66ac9dbSNicholas Bellinger case Opt_target_lun: 2006a2db857bStangwenji ret = match_u64(args, &tmp_ll); 2007c2091026SDavid Disseldorp if (ret) 2008c2091026SDavid Disseldorp goto out; 2009a2db857bStangwenji target_lun = (u64)tmp_ll; 2010c66ac9dbSNicholas Bellinger break; 2011c66ac9dbSNicholas Bellinger default: 2012c66ac9dbSNicholas Bellinger break; 2013c66ac9dbSNicholas Bellinger } 2014c66ac9dbSNicholas Bellinger } 2015c66ac9dbSNicholas Bellinger 20166708bb27SAndy Grover if (!i_port || !t_port || !sa_res_key) { 20176708bb27SAndy Grover pr_err("Illegal parameters for APTPL registration\n"); 2018c66ac9dbSNicholas Bellinger ret = -EINVAL; 2019c66ac9dbSNicholas Bellinger goto out; 2020c66ac9dbSNicholas Bellinger } 2021c66ac9dbSNicholas Bellinger 2022c66ac9dbSNicholas Bellinger if (res_holder && !(type)) { 20236708bb27SAndy Grover pr_err("Illegal PR type: 0x%02x for reservation" 2024c66ac9dbSNicholas Bellinger " holder\n", type); 2025c66ac9dbSNicholas Bellinger ret = -EINVAL; 2026c66ac9dbSNicholas Bellinger goto out; 2027c66ac9dbSNicholas Bellinger } 2028c66ac9dbSNicholas Bellinger 20290fd97ccfSChristoph Hellwig ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, 2030c66ac9dbSNicholas Bellinger i_port, isid, mapped_lun, t_port, tpgt, target_lun, 2031c66ac9dbSNicholas Bellinger res_holder, all_tg_pt, type); 2032c66ac9dbSNicholas Bellinger out: 20336d180253SJesper Juhl kfree(i_fabric); 20346d180253SJesper Juhl kfree(i_port); 20356d180253SJesper Juhl kfree(isid); 20366d180253SJesper Juhl kfree(t_fabric); 20376d180253SJesper Juhl kfree(t_port); 2038c66ac9dbSNicholas Bellinger kfree(orig); 2039c66ac9dbSNicholas Bellinger return (ret == 0) ? count : ret; 2040c66ac9dbSNicholas Bellinger } 2041c66ac9dbSNicholas Bellinger 2042c66ac9dbSNicholas Bellinger 20432eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_holder); 20442eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_all_tgt_pts); 20452eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_generation); 20462eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_holder_tg_port); 20472eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_registered_i_pts); 20482eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_type); 20492eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_type); 20502eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_aptpl_active); 20512eafd729SChristoph Hellwig CONFIGFS_ATTR(target_pr_, res_aptpl_metadata); 2052c66ac9dbSNicholas Bellinger 2053c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_pr_attrs[] = { 20542eafd729SChristoph Hellwig &target_pr_attr_res_holder, 20552eafd729SChristoph Hellwig &target_pr_attr_res_pr_all_tgt_pts, 20562eafd729SChristoph Hellwig &target_pr_attr_res_pr_generation, 20572eafd729SChristoph Hellwig &target_pr_attr_res_pr_holder_tg_port, 20582eafd729SChristoph Hellwig &target_pr_attr_res_pr_registered_i_pts, 20592eafd729SChristoph Hellwig &target_pr_attr_res_pr_type, 20602eafd729SChristoph Hellwig &target_pr_attr_res_type, 20612eafd729SChristoph Hellwig &target_pr_attr_res_aptpl_active, 20622eafd729SChristoph Hellwig &target_pr_attr_res_aptpl_metadata, 2063c66ac9dbSNicholas Bellinger NULL, 2064c66ac9dbSNicholas Bellinger }; 2065c66ac9dbSNicholas Bellinger 20662eafd729SChristoph Hellwig TB_CIT_SETUP(dev_pr, NULL, NULL, target_core_dev_pr_attrs); 2067c66ac9dbSNicholas Bellinger 206891e2e39bSNicholas Bellinger /* End functions for struct config_item_type tb_dev_pr_cit */ 2069c66ac9dbSNicholas Bellinger 207073112edcSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_cit */ 2071c66ac9dbSNicholas Bellinger 20722eafd729SChristoph Hellwig static inline struct se_device *to_device(struct config_item *item) 2073c66ac9dbSNicholas Bellinger { 20742eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_device, dev_group); 20752eafd729SChristoph Hellwig } 20762eafd729SChristoph Hellwig 20772eafd729SChristoph Hellwig static ssize_t target_dev_info_show(struct config_item *item, char *page) 20782eafd729SChristoph Hellwig { 20792eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2080c66ac9dbSNicholas Bellinger int bl = 0; 2081c66ac9dbSNicholas Bellinger ssize_t read_bytes = 0; 2082c66ac9dbSNicholas Bellinger 20830fd97ccfSChristoph Hellwig transport_dump_dev_state(dev, page, &bl); 2084c66ac9dbSNicholas Bellinger read_bytes += bl; 20850a06d430SChristoph Hellwig read_bytes += dev->transport->show_configfs_dev_params(dev, 20860a06d430SChristoph Hellwig page+read_bytes); 2087c66ac9dbSNicholas Bellinger return read_bytes; 2088c66ac9dbSNicholas Bellinger } 2089c66ac9dbSNicholas Bellinger 20902eafd729SChristoph Hellwig static ssize_t target_dev_control_store(struct config_item *item, 20912eafd729SChristoph Hellwig const char *page, size_t count) 2092c66ac9dbSNicholas Bellinger { 20932eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2094c66ac9dbSNicholas Bellinger 20950a06d430SChristoph Hellwig return dev->transport->set_configfs_dev_params(dev, page, count); 2096c66ac9dbSNicholas Bellinger } 2097c66ac9dbSNicholas Bellinger 20982eafd729SChristoph Hellwig static ssize_t target_dev_alias_show(struct config_item *item, char *page) 2099c66ac9dbSNicholas Bellinger { 21002eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2101c66ac9dbSNicholas Bellinger 21020fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_ALIAS)) 2103c66ac9dbSNicholas Bellinger return 0; 2104c66ac9dbSNicholas Bellinger 21050fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); 2106c66ac9dbSNicholas Bellinger } 2107c66ac9dbSNicholas Bellinger 21082eafd729SChristoph Hellwig static ssize_t target_dev_alias_store(struct config_item *item, 21092eafd729SChristoph Hellwig const char *page, size_t count) 2110c66ac9dbSNicholas Bellinger { 21112eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 21120fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2113c66ac9dbSNicholas Bellinger ssize_t read_bytes; 2114c66ac9dbSNicholas Bellinger 2115c66ac9dbSNicholas Bellinger if (count > (SE_DEV_ALIAS_LEN-1)) { 21166708bb27SAndy Grover pr_err("alias count: %d exceeds" 2117c66ac9dbSNicholas Bellinger " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 2118c66ac9dbSNicholas Bellinger SE_DEV_ALIAS_LEN-1); 2119c66ac9dbSNicholas Bellinger return -EINVAL; 2120c66ac9dbSNicholas Bellinger } 2121c66ac9dbSNicholas Bellinger 21220fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); 21233011684cSDan Carpenter if (!read_bytes) 21243011684cSDan Carpenter return -EINVAL; 21250fd97ccfSChristoph Hellwig if (dev->dev_alias[read_bytes - 1] == '\n') 21260fd97ccfSChristoph Hellwig dev->dev_alias[read_bytes - 1] = '\0'; 21270877eafdSSebastian Andrzej Siewior 21280fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_ALIAS; 21293011684cSDan Carpenter 21306708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 2131c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 21320fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 21330fd97ccfSChristoph Hellwig dev->dev_alias); 2134c66ac9dbSNicholas Bellinger 2135c66ac9dbSNicholas Bellinger return read_bytes; 2136c66ac9dbSNicholas Bellinger } 2137c66ac9dbSNicholas Bellinger 21382eafd729SChristoph Hellwig static ssize_t target_dev_udev_path_show(struct config_item *item, char *page) 2139c66ac9dbSNicholas Bellinger { 21402eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2141c66ac9dbSNicholas Bellinger 21420fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_UDEV_PATH)) 2143c66ac9dbSNicholas Bellinger return 0; 2144c66ac9dbSNicholas Bellinger 21450fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); 2146c66ac9dbSNicholas Bellinger } 2147c66ac9dbSNicholas Bellinger 21482eafd729SChristoph Hellwig static ssize_t target_dev_udev_path_store(struct config_item *item, 21492eafd729SChristoph Hellwig const char *page, size_t count) 2150c66ac9dbSNicholas Bellinger { 21512eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 21520fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2153c66ac9dbSNicholas Bellinger ssize_t read_bytes; 2154c66ac9dbSNicholas Bellinger 2155c66ac9dbSNicholas Bellinger if (count > (SE_UDEV_PATH_LEN-1)) { 21566708bb27SAndy Grover pr_err("udev_path count: %d exceeds" 2157c66ac9dbSNicholas Bellinger " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 2158c66ac9dbSNicholas Bellinger SE_UDEV_PATH_LEN-1); 2159c66ac9dbSNicholas Bellinger return -EINVAL; 2160c66ac9dbSNicholas Bellinger } 2161c66ac9dbSNicholas Bellinger 21620fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, 2163c66ac9dbSNicholas Bellinger "%s", page); 21643011684cSDan Carpenter if (!read_bytes) 21653011684cSDan Carpenter return -EINVAL; 21660fd97ccfSChristoph Hellwig if (dev->udev_path[read_bytes - 1] == '\n') 21670fd97ccfSChristoph Hellwig dev->udev_path[read_bytes - 1] = '\0'; 21680877eafdSSebastian Andrzej Siewior 21690fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_UDEV_PATH; 21703011684cSDan Carpenter 21716708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 2172c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 21730fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 21740fd97ccfSChristoph Hellwig dev->udev_path); 2175c66ac9dbSNicholas Bellinger 2176c66ac9dbSNicholas Bellinger return read_bytes; 2177c66ac9dbSNicholas Bellinger } 2178c66ac9dbSNicholas Bellinger 21792eafd729SChristoph Hellwig static ssize_t target_dev_enable_show(struct config_item *item, char *page) 218064146db7SAndy Grover { 21812eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 218264146db7SAndy Grover 2183cb0f32e1SMike Christie return snprintf(page, PAGE_SIZE, "%d\n", target_dev_configured(dev)); 218464146db7SAndy Grover } 218564146db7SAndy Grover 21862eafd729SChristoph Hellwig static ssize_t target_dev_enable_store(struct config_item *item, 21872eafd729SChristoph Hellwig const char *page, size_t count) 2188c66ac9dbSNicholas Bellinger { 21892eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2190c66ac9dbSNicholas Bellinger char *ptr; 21910fd97ccfSChristoph Hellwig int ret; 2192c66ac9dbSNicholas Bellinger 2193c66ac9dbSNicholas Bellinger ptr = strstr(page, "1"); 21946708bb27SAndy Grover if (!ptr) { 21956708bb27SAndy Grover pr_err("For dev_enable ops, only valid value" 2196c66ac9dbSNicholas Bellinger " is \"1\"\n"); 2197c66ac9dbSNicholas Bellinger return -EINVAL; 2198c66ac9dbSNicholas Bellinger } 2199c66ac9dbSNicholas Bellinger 22000fd97ccfSChristoph Hellwig ret = target_configure_device(dev); 22010fd97ccfSChristoph Hellwig if (ret) 22020fd97ccfSChristoph Hellwig return ret; 2203c66ac9dbSNicholas Bellinger return count; 2204c66ac9dbSNicholas Bellinger } 2205c66ac9dbSNicholas Bellinger 22062eafd729SChristoph Hellwig static ssize_t target_dev_alua_lu_gp_show(struct config_item *item, char *page) 2207c66ac9dbSNicholas Bellinger { 22082eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2209c66ac9dbSNicholas Bellinger struct config_item *lu_ci; 2210c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2211c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2212c66ac9dbSNicholas Bellinger ssize_t len = 0; 2213c66ac9dbSNicholas Bellinger 2214c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 2215c87fbd56SChristoph Hellwig if (!lu_gp_mem) 2216c87fbd56SChristoph Hellwig return 0; 2217c66ac9dbSNicholas Bellinger 2218c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 2219c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 22206708bb27SAndy Grover if (lu_gp) { 2221c66ac9dbSNicholas Bellinger lu_ci = &lu_gp->lu_gp_group.cg_item; 2222c66ac9dbSNicholas Bellinger len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 2223c66ac9dbSNicholas Bellinger config_item_name(lu_ci), lu_gp->lu_gp_id); 2224c66ac9dbSNicholas Bellinger } 2225c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2226c66ac9dbSNicholas Bellinger 2227c66ac9dbSNicholas Bellinger return len; 2228c66ac9dbSNicholas Bellinger } 2229c66ac9dbSNicholas Bellinger 22302eafd729SChristoph Hellwig static ssize_t target_dev_alua_lu_gp_store(struct config_item *item, 22312eafd729SChristoph Hellwig const char *page, size_t count) 2232c66ac9dbSNicholas Bellinger { 22332eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 22340fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2235c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 2236c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2237c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 2238c66ac9dbSNicholas Bellinger int move = 0; 2239c66ac9dbSNicholas Bellinger 2240c87fbd56SChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 2241c87fbd56SChristoph Hellwig if (!lu_gp_mem) 22429105bfc0SAndy Grover return count; 2243c87fbd56SChristoph Hellwig 2244c66ac9dbSNicholas Bellinger if (count > LU_GROUP_NAME_BUF) { 22456708bb27SAndy Grover pr_err("ALUA LU Group Alias too large!\n"); 2246c66ac9dbSNicholas Bellinger return -EINVAL; 2247c66ac9dbSNicholas Bellinger } 2248c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 2249c66ac9dbSNicholas Bellinger memcpy(buf, page, count); 2250c66ac9dbSNicholas Bellinger /* 2251c66ac9dbSNicholas Bellinger * Any ALUA logical unit alias besides "NULL" means we will be 2252c66ac9dbSNicholas Bellinger * making a new group association. 2253c66ac9dbSNicholas Bellinger */ 2254c66ac9dbSNicholas Bellinger if (strcmp(strstrip(buf), "NULL")) { 2255c66ac9dbSNicholas Bellinger /* 2256c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name() will increment reference to 2257c66ac9dbSNicholas Bellinger * struct t10_alua_lu_gp. This reference is released with 2258c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name below(). 2259c66ac9dbSNicholas Bellinger */ 2260c66ac9dbSNicholas Bellinger lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 22616708bb27SAndy Grover if (!lu_gp_new) 2262c66ac9dbSNicholas Bellinger return -ENODEV; 2263c66ac9dbSNicholas Bellinger } 2264c66ac9dbSNicholas Bellinger 2265c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 2266c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 22676708bb27SAndy Grover if (lu_gp) { 2268c66ac9dbSNicholas Bellinger /* 2269c66ac9dbSNicholas Bellinger * Clearing an existing lu_gp association, and replacing 2270c66ac9dbSNicholas Bellinger * with NULL 2271c66ac9dbSNicholas Bellinger */ 22726708bb27SAndy Grover if (!lu_gp_new) { 22736708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 2274c66ac9dbSNicholas Bellinger " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 2275c66ac9dbSNicholas Bellinger " %hu\n", 2276c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 22770fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 2278c66ac9dbSNicholas Bellinger config_item_name(&lu_gp->lu_gp_group.cg_item), 2279c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2280c66ac9dbSNicholas Bellinger 2281c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 2282c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2283c66ac9dbSNicholas Bellinger 2284c66ac9dbSNicholas Bellinger return count; 2285c66ac9dbSNicholas Bellinger } 2286c66ac9dbSNicholas Bellinger /* 2287c66ac9dbSNicholas Bellinger * Removing existing association of lu_gp_mem with lu_gp 2288c66ac9dbSNicholas Bellinger */ 2289c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 2290c66ac9dbSNicholas Bellinger move = 1; 2291c66ac9dbSNicholas Bellinger } 2292c66ac9dbSNicholas Bellinger /* 2293c66ac9dbSNicholas Bellinger * Associate lu_gp_mem with lu_gp_new. 2294c66ac9dbSNicholas Bellinger */ 2295c66ac9dbSNicholas Bellinger __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 2296c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2297c66ac9dbSNicholas Bellinger 22986708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 2299c66ac9dbSNicholas Bellinger " core/alua/lu_gps/%s, ID: %hu\n", 2300c66ac9dbSNicholas Bellinger (move) ? "Moving" : "Adding", 2301c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 23020fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 2303c66ac9dbSNicholas Bellinger config_item_name(&lu_gp_new->lu_gp_group.cg_item), 2304c66ac9dbSNicholas Bellinger lu_gp_new->lu_gp_id); 2305c66ac9dbSNicholas Bellinger 2306c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 2307c66ac9dbSNicholas Bellinger return count; 2308c66ac9dbSNicholas Bellinger } 2309c66ac9dbSNicholas Bellinger 23102eafd729SChristoph Hellwig static ssize_t target_dev_lba_map_show(struct config_item *item, char *page) 2311229d4f11SHannes Reinecke { 23122eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2313229d4f11SHannes Reinecke struct t10_alua_lba_map *map; 2314229d4f11SHannes Reinecke struct t10_alua_lba_map_member *mem; 2315229d4f11SHannes Reinecke char *b = page; 2316229d4f11SHannes Reinecke int bl = 0; 2317229d4f11SHannes Reinecke char state; 2318229d4f11SHannes Reinecke 2319229d4f11SHannes Reinecke spin_lock(&dev->t10_alua.lba_map_lock); 2320229d4f11SHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 2321229d4f11SHannes Reinecke bl += sprintf(b + bl, "%u %u\n", 2322229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_size, 2323229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_multiplier); 2324229d4f11SHannes Reinecke list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { 2325229d4f11SHannes Reinecke bl += sprintf(b + bl, "%llu %llu", 2326229d4f11SHannes Reinecke map->lba_map_first_lba, map->lba_map_last_lba); 2327229d4f11SHannes Reinecke list_for_each_entry(mem, &map->lba_map_mem_list, 2328229d4f11SHannes Reinecke lba_map_mem_list) { 2329229d4f11SHannes Reinecke switch (mem->lba_map_mem_alua_state) { 2330229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: 2331229d4f11SHannes Reinecke state = 'O'; 2332229d4f11SHannes Reinecke break; 2333229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: 2334229d4f11SHannes Reinecke state = 'A'; 2335229d4f11SHannes Reinecke break; 2336229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_STANDBY: 2337229d4f11SHannes Reinecke state = 'S'; 2338229d4f11SHannes Reinecke break; 2339229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_UNAVAILABLE: 2340229d4f11SHannes Reinecke state = 'U'; 2341229d4f11SHannes Reinecke break; 2342229d4f11SHannes Reinecke default: 2343229d4f11SHannes Reinecke state = '.'; 2344229d4f11SHannes Reinecke break; 2345229d4f11SHannes Reinecke } 2346229d4f11SHannes Reinecke bl += sprintf(b + bl, " %d:%c", 2347229d4f11SHannes Reinecke mem->lba_map_mem_alua_pg_id, state); 2348229d4f11SHannes Reinecke } 2349229d4f11SHannes Reinecke bl += sprintf(b + bl, "\n"); 2350229d4f11SHannes Reinecke } 2351229d4f11SHannes Reinecke spin_unlock(&dev->t10_alua.lba_map_lock); 2352229d4f11SHannes Reinecke return bl; 2353229d4f11SHannes Reinecke } 2354229d4f11SHannes Reinecke 23552eafd729SChristoph Hellwig static ssize_t target_dev_lba_map_store(struct config_item *item, 23562eafd729SChristoph Hellwig const char *page, size_t count) 2357229d4f11SHannes Reinecke { 23582eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2359229d4f11SHannes Reinecke struct t10_alua_lba_map *lba_map = NULL; 2360229d4f11SHannes Reinecke struct list_head lba_list; 2361f0a8afecSBart Van Assche char *map_entries, *orig, *ptr; 2362229d4f11SHannes Reinecke char state; 2363229d4f11SHannes Reinecke int pg_num = -1, pg; 2364229d4f11SHannes Reinecke int ret = 0, num = 0, pg_id, alua_state; 2365229d4f11SHannes Reinecke unsigned long start_lba = -1, end_lba = -1; 2366229d4f11SHannes Reinecke unsigned long segment_size = -1, segment_mult = -1; 2367229d4f11SHannes Reinecke 2368f0a8afecSBart Van Assche orig = map_entries = kstrdup(page, GFP_KERNEL); 2369229d4f11SHannes Reinecke if (!map_entries) 2370229d4f11SHannes Reinecke return -ENOMEM; 2371229d4f11SHannes Reinecke 2372229d4f11SHannes Reinecke INIT_LIST_HEAD(&lba_list); 2373229d4f11SHannes Reinecke while ((ptr = strsep(&map_entries, "\n")) != NULL) { 2374229d4f11SHannes Reinecke if (!*ptr) 2375229d4f11SHannes Reinecke continue; 2376229d4f11SHannes Reinecke 2377229d4f11SHannes Reinecke if (num == 0) { 2378229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu\n", 2379229d4f11SHannes Reinecke &segment_size, &segment_mult) != 2) { 2380229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 2381229d4f11SHannes Reinecke ret = -EINVAL; 2382229d4f11SHannes Reinecke break; 2383229d4f11SHannes Reinecke } 2384229d4f11SHannes Reinecke num++; 2385229d4f11SHannes Reinecke continue; 2386229d4f11SHannes Reinecke } 2387229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { 2388229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 2389229d4f11SHannes Reinecke ret = -EINVAL; 2390229d4f11SHannes Reinecke break; 2391229d4f11SHannes Reinecke } 2392229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2393229d4f11SHannes Reinecke if (!ptr) { 2394229d4f11SHannes Reinecke pr_err("Invalid line %d, missing end lba\n", num); 2395229d4f11SHannes Reinecke ret = -EINVAL; 2396229d4f11SHannes Reinecke break; 2397229d4f11SHannes Reinecke } 2398229d4f11SHannes Reinecke ptr++; 2399229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2400229d4f11SHannes Reinecke if (!ptr) { 2401229d4f11SHannes Reinecke pr_err("Invalid line %d, missing state definitions\n", 2402229d4f11SHannes Reinecke num); 2403229d4f11SHannes Reinecke ret = -EINVAL; 2404229d4f11SHannes Reinecke break; 2405229d4f11SHannes Reinecke } 2406229d4f11SHannes Reinecke ptr++; 2407229d4f11SHannes Reinecke lba_map = core_alua_allocate_lba_map(&lba_list, 2408229d4f11SHannes Reinecke start_lba, end_lba); 2409229d4f11SHannes Reinecke if (IS_ERR(lba_map)) { 2410229d4f11SHannes Reinecke ret = PTR_ERR(lba_map); 2411229d4f11SHannes Reinecke break; 2412229d4f11SHannes Reinecke } 2413229d4f11SHannes Reinecke pg = 0; 2414229d4f11SHannes Reinecke while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { 2415229d4f11SHannes Reinecke switch (state) { 2416229d4f11SHannes Reinecke case 'O': 2417229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; 2418229d4f11SHannes Reinecke break; 2419229d4f11SHannes Reinecke case 'A': 2420229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; 2421229d4f11SHannes Reinecke break; 2422229d4f11SHannes Reinecke case 'S': 2423229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_STANDBY; 2424229d4f11SHannes Reinecke break; 2425229d4f11SHannes Reinecke case 'U': 2426229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; 2427229d4f11SHannes Reinecke break; 2428229d4f11SHannes Reinecke default: 2429229d4f11SHannes Reinecke pr_err("Invalid ALUA state '%c'\n", state); 2430229d4f11SHannes Reinecke ret = -EINVAL; 2431229d4f11SHannes Reinecke goto out; 2432229d4f11SHannes Reinecke } 2433229d4f11SHannes Reinecke 2434229d4f11SHannes Reinecke ret = core_alua_allocate_lba_map_mem(lba_map, 2435229d4f11SHannes Reinecke pg_id, alua_state); 2436229d4f11SHannes Reinecke if (ret) { 2437229d4f11SHannes Reinecke pr_err("Invalid target descriptor %d:%c " 2438229d4f11SHannes Reinecke "at line %d\n", 2439229d4f11SHannes Reinecke pg_id, state, num); 2440229d4f11SHannes Reinecke break; 2441229d4f11SHannes Reinecke } 2442229d4f11SHannes Reinecke pg++; 2443229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2444229d4f11SHannes Reinecke if (ptr) 2445229d4f11SHannes Reinecke ptr++; 2446229d4f11SHannes Reinecke else 2447229d4f11SHannes Reinecke break; 2448229d4f11SHannes Reinecke } 2449229d4f11SHannes Reinecke if (pg_num == -1) 2450229d4f11SHannes Reinecke pg_num = pg; 2451229d4f11SHannes Reinecke else if (pg != pg_num) { 2452229d4f11SHannes Reinecke pr_err("Only %d from %d port groups definitions " 2453229d4f11SHannes Reinecke "at line %d\n", pg, pg_num, num); 2454229d4f11SHannes Reinecke ret = -EINVAL; 2455229d4f11SHannes Reinecke break; 2456229d4f11SHannes Reinecke } 2457229d4f11SHannes Reinecke num++; 2458229d4f11SHannes Reinecke } 2459229d4f11SHannes Reinecke out: 2460229d4f11SHannes Reinecke if (ret) { 2461229d4f11SHannes Reinecke core_alua_free_lba_map(&lba_list); 2462229d4f11SHannes Reinecke count = ret; 2463229d4f11SHannes Reinecke } else 2464229d4f11SHannes Reinecke core_alua_set_lba_map(dev, &lba_list, 2465229d4f11SHannes Reinecke segment_size, segment_mult); 2466f0a8afecSBart Van Assche kfree(orig); 2467229d4f11SHannes Reinecke return count; 2468229d4f11SHannes Reinecke } 2469229d4f11SHannes Reinecke 24702eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_dev_, info); 24712eafd729SChristoph Hellwig CONFIGFS_ATTR_WO(target_dev_, control); 24722eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, alias); 24732eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, udev_path); 24742eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, enable); 24752eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, alua_lu_gp); 24762eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, lba_map); 2477229d4f11SHannes Reinecke 247873112edcSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrs[] = { 24792eafd729SChristoph Hellwig &target_dev_attr_info, 24802eafd729SChristoph Hellwig &target_dev_attr_control, 24812eafd729SChristoph Hellwig &target_dev_attr_alias, 24822eafd729SChristoph Hellwig &target_dev_attr_udev_path, 24832eafd729SChristoph Hellwig &target_dev_attr_enable, 24842eafd729SChristoph Hellwig &target_dev_attr_alua_lu_gp, 24852eafd729SChristoph Hellwig &target_dev_attr_lba_map, 2486c66ac9dbSNicholas Bellinger NULL, 2487c66ac9dbSNicholas Bellinger }; 2488c66ac9dbSNicholas Bellinger 2489c66ac9dbSNicholas Bellinger static void target_core_dev_release(struct config_item *item) 2490c66ac9dbSNicholas Bellinger { 24910fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 24920fd97ccfSChristoph Hellwig struct se_device *dev = 24930fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 2494c66ac9dbSNicholas Bellinger 24950fd97ccfSChristoph Hellwig target_free_device(dev); 2496c66ac9dbSNicholas Bellinger } 2497c66ac9dbSNicholas Bellinger 2498c17cd249SNicholas Bellinger /* 2499c17cd249SNicholas Bellinger * Used in target_core_fabric_configfs.c to verify valid se_device symlink 2500c17cd249SNicholas Bellinger * within target_fabric_port_link() 2501c17cd249SNicholas Bellinger */ 2502c17cd249SNicholas Bellinger struct configfs_item_operations target_core_dev_item_ops = { 2503c66ac9dbSNicholas Bellinger .release = target_core_dev_release, 2504c66ac9dbSNicholas Bellinger }; 2505c66ac9dbSNicholas Bellinger 250673112edcSNicholas Bellinger TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); 2507c66ac9dbSNicholas Bellinger 250873112edcSNicholas Bellinger /* End functions for struct config_item_type tb_dev_cit */ 2509c66ac9dbSNicholas Bellinger 2510c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 2511c66ac9dbSNicholas Bellinger 25122eafd729SChristoph Hellwig static inline struct t10_alua_lu_gp *to_lu_gp(struct config_item *item) 2513c66ac9dbSNicholas Bellinger { 25142eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_alua_lu_gp, 25152eafd729SChristoph Hellwig lu_gp_group); 25162eafd729SChristoph Hellwig } 25172eafd729SChristoph Hellwig 25182eafd729SChristoph Hellwig static ssize_t target_lu_gp_lu_gp_id_show(struct config_item *item, char *page) 25192eafd729SChristoph Hellwig { 25202eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 25212eafd729SChristoph Hellwig 25226708bb27SAndy Grover if (!lu_gp->lu_gp_valid_id) 2523c66ac9dbSNicholas Bellinger return 0; 2524c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 2525c66ac9dbSNicholas Bellinger } 2526c66ac9dbSNicholas Bellinger 25272eafd729SChristoph Hellwig static ssize_t target_lu_gp_lu_gp_id_store(struct config_item *item, 25282eafd729SChristoph Hellwig const char *page, size_t count) 2529c66ac9dbSNicholas Bellinger { 25302eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 2531c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 2532c66ac9dbSNicholas Bellinger unsigned long lu_gp_id; 2533c66ac9dbSNicholas Bellinger int ret; 2534c66ac9dbSNicholas Bellinger 253557103d7fSJingoo Han ret = kstrtoul(page, 0, &lu_gp_id); 2536c66ac9dbSNicholas Bellinger if (ret < 0) { 253757103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2538c66ac9dbSNicholas Bellinger " lu_gp_id\n", ret); 253957103d7fSJingoo Han return ret; 2540c66ac9dbSNicholas Bellinger } 2541c66ac9dbSNicholas Bellinger if (lu_gp_id > 0x0000ffff) { 25426708bb27SAndy Grover pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 2543c66ac9dbSNicholas Bellinger " 0x0000ffff\n", lu_gp_id); 2544c66ac9dbSNicholas Bellinger return -EINVAL; 2545c66ac9dbSNicholas Bellinger } 2546c66ac9dbSNicholas Bellinger 2547c66ac9dbSNicholas Bellinger ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 2548c66ac9dbSNicholas Bellinger if (ret < 0) 2549c66ac9dbSNicholas Bellinger return -EINVAL; 2550c66ac9dbSNicholas Bellinger 25516708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 2552c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s to ID: %hu\n", 2553c66ac9dbSNicholas Bellinger config_item_name(&alua_lu_gp_cg->cg_item), 2554c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2555c66ac9dbSNicholas Bellinger 2556c66ac9dbSNicholas Bellinger return count; 2557c66ac9dbSNicholas Bellinger } 2558c66ac9dbSNicholas Bellinger 25592eafd729SChristoph Hellwig static ssize_t target_lu_gp_members_show(struct config_item *item, char *page) 2560c66ac9dbSNicholas Bellinger { 25612eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 2562c66ac9dbSNicholas Bellinger struct se_device *dev; 2563c66ac9dbSNicholas Bellinger struct se_hba *hba; 2564c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2565c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2566c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 2567c66ac9dbSNicholas Bellinger 2568c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 2569c66ac9dbSNicholas Bellinger 2570c66ac9dbSNicholas Bellinger spin_lock(&lu_gp->lu_gp_lock); 2571c66ac9dbSNicholas Bellinger list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 2572c66ac9dbSNicholas Bellinger dev = lu_gp_mem->lu_gp_mem_dev; 25730fd97ccfSChristoph Hellwig hba = dev->se_hba; 2574c66ac9dbSNicholas Bellinger 2575c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 2576c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 25770fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item)); 2578c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2579c66ac9dbSNicholas Bellinger 2580c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 25816708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2582c66ac9dbSNicholas Bellinger "_members buffer\n"); 2583c66ac9dbSNicholas Bellinger break; 2584c66ac9dbSNicholas Bellinger } 2585c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2586c66ac9dbSNicholas Bellinger len += cur_len; 2587c66ac9dbSNicholas Bellinger } 2588c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp->lu_gp_lock); 2589c66ac9dbSNicholas Bellinger 2590c66ac9dbSNicholas Bellinger return len; 2591c66ac9dbSNicholas Bellinger } 2592c66ac9dbSNicholas Bellinger 25932eafd729SChristoph Hellwig CONFIGFS_ATTR(target_lu_gp_, lu_gp_id); 25942eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_lu_gp_, members); 2595c66ac9dbSNicholas Bellinger 2596c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 25972eafd729SChristoph Hellwig &target_lu_gp_attr_lu_gp_id, 25982eafd729SChristoph Hellwig &target_lu_gp_attr_members, 2599c66ac9dbSNicholas Bellinger NULL, 2600c66ac9dbSNicholas Bellinger }; 2601c66ac9dbSNicholas Bellinger 26021f6fe7cbSNicholas Bellinger static void target_core_alua_lu_gp_release(struct config_item *item) 26031f6fe7cbSNicholas Bellinger { 26041f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 26051f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 26061f6fe7cbSNicholas Bellinger 26071f6fe7cbSNicholas Bellinger core_alua_free_lu_gp(lu_gp); 26081f6fe7cbSNicholas Bellinger } 26091f6fe7cbSNicholas Bellinger 2610c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_lu_gp_ops = { 26111f6fe7cbSNicholas Bellinger .release = target_core_alua_lu_gp_release, 2612c66ac9dbSNicholas Bellinger }; 2613c66ac9dbSNicholas Bellinger 2614ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_lu_gp_cit = { 2615c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_lu_gp_ops, 2616c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_lu_gp_attrs, 2617c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2618c66ac9dbSNicholas Bellinger }; 2619c66ac9dbSNicholas Bellinger 2620c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 2621c66ac9dbSNicholas Bellinger 2622c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 2623c66ac9dbSNicholas Bellinger 2624c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_lu_gp( 2625c66ac9dbSNicholas Bellinger struct config_group *group, 2626c66ac9dbSNicholas Bellinger const char *name) 2627c66ac9dbSNicholas Bellinger { 2628c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2629c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = NULL; 2630c66ac9dbSNicholas Bellinger struct config_item *alua_lu_gp_ci = NULL; 2631c66ac9dbSNicholas Bellinger 2632c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp(name, 0); 2633c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 2634c66ac9dbSNicholas Bellinger return NULL; 2635c66ac9dbSNicholas Bellinger 2636c66ac9dbSNicholas Bellinger alua_lu_gp_cg = &lu_gp->lu_gp_group; 2637c66ac9dbSNicholas Bellinger alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 2638c66ac9dbSNicholas Bellinger 2639c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_lu_gp_cg, name, 2640c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 2641c66ac9dbSNicholas Bellinger 26426708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 2643c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s\n", 2644c66ac9dbSNicholas Bellinger config_item_name(alua_lu_gp_ci)); 2645c66ac9dbSNicholas Bellinger 2646c66ac9dbSNicholas Bellinger return alua_lu_gp_cg; 2647c66ac9dbSNicholas Bellinger 2648c66ac9dbSNicholas Bellinger } 2649c66ac9dbSNicholas Bellinger 2650c66ac9dbSNicholas Bellinger static void target_core_alua_drop_lu_gp( 2651c66ac9dbSNicholas Bellinger struct config_group *group, 2652c66ac9dbSNicholas Bellinger struct config_item *item) 2653c66ac9dbSNicholas Bellinger { 2654c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 2655c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 2656c66ac9dbSNicholas Bellinger 26576708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 2658c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s, ID: %hu\n", 2659c66ac9dbSNicholas Bellinger config_item_name(item), lu_gp->lu_gp_id); 26601f6fe7cbSNicholas Bellinger /* 26611f6fe7cbSNicholas Bellinger * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 26621f6fe7cbSNicholas Bellinger * -> target_core_alua_lu_gp_release() 26631f6fe7cbSNicholas Bellinger */ 2664c66ac9dbSNicholas Bellinger config_item_put(item); 2665c66ac9dbSNicholas Bellinger } 2666c66ac9dbSNicholas Bellinger 2667c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 2668c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_lu_gp, 2669c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_lu_gp, 2670c66ac9dbSNicholas Bellinger }; 2671c66ac9dbSNicholas Bellinger 2672ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_lu_gps_cit = { 2673c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2674c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_lu_gps_group_ops, 2675c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2676c66ac9dbSNicholas Bellinger }; 2677c66ac9dbSNicholas Bellinger 2678c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 2679c66ac9dbSNicholas Bellinger 2680c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2681c66ac9dbSNicholas Bellinger 26822eafd729SChristoph Hellwig static inline struct t10_alua_tg_pt_gp *to_tg_pt_gp(struct config_item *item) 26832eafd729SChristoph Hellwig { 26842eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_alua_tg_pt_gp, 26852eafd729SChristoph Hellwig tg_pt_gp_group); 26862eafd729SChristoph Hellwig } 2687c66ac9dbSNicholas Bellinger 26882eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_state_show(struct config_item *item, 2689c66ac9dbSNicholas Bellinger char *page) 2690c66ac9dbSNicholas Bellinger { 2691c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", 2692d19c4643SMike Christie to_tg_pt_gp(item)->tg_pt_gp_alua_access_state); 2693c66ac9dbSNicholas Bellinger } 2694c66ac9dbSNicholas Bellinger 26952eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_state_store(struct config_item *item, 26962eafd729SChristoph Hellwig const char *page, size_t count) 2697c66ac9dbSNicholas Bellinger { 26982eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 26990fd97ccfSChristoph Hellwig struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; 2700c66ac9dbSNicholas Bellinger unsigned long tmp; 2701c66ac9dbSNicholas Bellinger int new_state, ret; 2702c66ac9dbSNicholas Bellinger 27036708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 2704125d0119SHannes Reinecke pr_err("Unable to do implicit ALUA on non valid" 2705c66ac9dbSNicholas Bellinger " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); 2706c66ac9dbSNicholas Bellinger return -EINVAL; 2707c66ac9dbSNicholas Bellinger } 2708cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 2709f1453773SNicholas Bellinger pr_err("Unable to set alua_access_state while device is" 2710f1453773SNicholas Bellinger " not configured\n"); 2711f1453773SNicholas Bellinger return -ENODEV; 2712f1453773SNicholas Bellinger } 2713c66ac9dbSNicholas Bellinger 271457103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2715c66ac9dbSNicholas Bellinger if (ret < 0) { 27166708bb27SAndy Grover pr_err("Unable to extract new ALUA access state from" 2717c66ac9dbSNicholas Bellinger " %s\n", page); 271857103d7fSJingoo Han return ret; 2719c66ac9dbSNicholas Bellinger } 2720c66ac9dbSNicholas Bellinger new_state = (int)tmp; 2721c66ac9dbSNicholas Bellinger 2722125d0119SHannes Reinecke if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { 2723125d0119SHannes Reinecke pr_err("Unable to process implicit configfs ALUA" 2724125d0119SHannes Reinecke " transition while TPGS_IMPLICIT_ALUA is disabled\n"); 2725c66ac9dbSNicholas Bellinger return -EINVAL; 2726c66ac9dbSNicholas Bellinger } 2727c66094bfSHannes Reinecke if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && 2728c66094bfSHannes Reinecke new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { 2729c66094bfSHannes Reinecke /* LBA DEPENDENT is only allowed with implicit ALUA */ 2730c66094bfSHannes Reinecke pr_err("Unable to process implicit configfs ALUA transition" 2731c66094bfSHannes Reinecke " while explicit ALUA management is enabled\n"); 2732c66094bfSHannes Reinecke return -EINVAL; 2733c66094bfSHannes Reinecke } 2734c66ac9dbSNicholas Bellinger 27350fd97ccfSChristoph Hellwig ret = core_alua_do_port_transition(tg_pt_gp, dev, 2736c66ac9dbSNicholas Bellinger NULL, NULL, new_state, 0); 2737c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; 2738c66ac9dbSNicholas Bellinger } 2739c66ac9dbSNicholas Bellinger 27402eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_status_show(struct config_item *item, 2741c66ac9dbSNicholas Bellinger char *page) 2742c66ac9dbSNicholas Bellinger { 27432eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2744c66ac9dbSNicholas Bellinger return sprintf(page, "%s\n", 2745c66ac9dbSNicholas Bellinger core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2746c66ac9dbSNicholas Bellinger } 2747c66ac9dbSNicholas Bellinger 27482eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_status_store( 27492eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 2750c66ac9dbSNicholas Bellinger { 27512eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2752c66ac9dbSNicholas Bellinger unsigned long tmp; 2753c66ac9dbSNicholas Bellinger int new_status, ret; 2754c66ac9dbSNicholas Bellinger 27556708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 27566708bb27SAndy Grover pr_err("Unable to do set ALUA access status on non" 2757c66ac9dbSNicholas Bellinger " valid tg_pt_gp ID: %hu\n", 2758c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_valid_id); 2759c66ac9dbSNicholas Bellinger return -EINVAL; 2760c66ac9dbSNicholas Bellinger } 2761c66ac9dbSNicholas Bellinger 276257103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2763c66ac9dbSNicholas Bellinger if (ret < 0) { 27646708bb27SAndy Grover pr_err("Unable to extract new ALUA access status" 2765c66ac9dbSNicholas Bellinger " from %s\n", page); 276657103d7fSJingoo Han return ret; 2767c66ac9dbSNicholas Bellinger } 2768c66ac9dbSNicholas Bellinger new_status = (int)tmp; 2769c66ac9dbSNicholas Bellinger 2770c66ac9dbSNicholas Bellinger if ((new_status != ALUA_STATUS_NONE) && 2771125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && 2772125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { 27736708bb27SAndy Grover pr_err("Illegal ALUA access status: 0x%02x\n", 2774c66ac9dbSNicholas Bellinger new_status); 2775c66ac9dbSNicholas Bellinger return -EINVAL; 2776c66ac9dbSNicholas Bellinger } 2777c66ac9dbSNicholas Bellinger 2778c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2779c66ac9dbSNicholas Bellinger return count; 2780c66ac9dbSNicholas Bellinger } 2781c66ac9dbSNicholas Bellinger 27822eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_type_show(struct config_item *item, 2783c66ac9dbSNicholas Bellinger char *page) 2784c66ac9dbSNicholas Bellinger { 27852eafd729SChristoph Hellwig return core_alua_show_access_type(to_tg_pt_gp(item), page); 2786c66ac9dbSNicholas Bellinger } 2787c66ac9dbSNicholas Bellinger 27882eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_type_store(struct config_item *item, 27892eafd729SChristoph Hellwig const char *page, size_t count) 2790c66ac9dbSNicholas Bellinger { 27912eafd729SChristoph Hellwig return core_alua_store_access_type(to_tg_pt_gp(item), page, count); 2792c66ac9dbSNicholas Bellinger } 2793c66ac9dbSNicholas Bellinger 27942eafd729SChristoph Hellwig #define ALUA_SUPPORTED_STATE_ATTR(_name, _bit) \ 27952eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_support_##_name##_show( \ 27962eafd729SChristoph Hellwig struct config_item *item, char *p) \ 2797b0a382c5SHannes Reinecke { \ 27982eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ 27992eafd729SChristoph Hellwig return sprintf(p, "%d\n", \ 28002eafd729SChristoph Hellwig !!(t->tg_pt_gp_alua_supported_states & _bit)); \ 28012eafd729SChristoph Hellwig } \ 28022eafd729SChristoph Hellwig \ 28032eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_support_##_name##_store( \ 28042eafd729SChristoph Hellwig struct config_item *item, const char *p, size_t c) \ 2805b0a382c5SHannes Reinecke { \ 28062eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ 2807b0a382c5SHannes Reinecke unsigned long tmp; \ 2808b0a382c5SHannes Reinecke int ret; \ 2809b0a382c5SHannes Reinecke \ 2810b0a382c5SHannes Reinecke if (!t->tg_pt_gp_valid_id) { \ 2811c0dcafd8SHannes Reinecke pr_err("Unable to do set " #_name " ALUA state on non" \ 2812b0a382c5SHannes Reinecke " valid tg_pt_gp ID: %hu\n", \ 2813b0a382c5SHannes Reinecke t->tg_pt_gp_valid_id); \ 2814b0a382c5SHannes Reinecke return -EINVAL; \ 2815b0a382c5SHannes Reinecke } \ 2816b0a382c5SHannes Reinecke \ 2817b0a382c5SHannes Reinecke ret = kstrtoul(p, 0, &tmp); \ 2818b0a382c5SHannes Reinecke if (ret < 0) { \ 2819b0a382c5SHannes Reinecke pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ 2820b0a382c5SHannes Reinecke return -EINVAL; \ 2821b0a382c5SHannes Reinecke } \ 2822b0a382c5SHannes Reinecke if (tmp > 1) { \ 2823b0a382c5SHannes Reinecke pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ 2824b0a382c5SHannes Reinecke return -EINVAL; \ 2825b0a382c5SHannes Reinecke } \ 28261f0b030cSSebastian Herbszt if (tmp) \ 28272eafd729SChristoph Hellwig t->tg_pt_gp_alua_supported_states |= _bit; \ 2828b0a382c5SHannes Reinecke else \ 28292eafd729SChristoph Hellwig t->tg_pt_gp_alua_supported_states &= ~_bit; \ 2830b0a382c5SHannes Reinecke \ 2831b0a382c5SHannes Reinecke return c; \ 28326be526c4SHannes Reinecke } 28336be526c4SHannes Reinecke 28342eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(transitioning, ALUA_T_SUP); 28352eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(offline, ALUA_O_SUP); 28362eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(lba_dependent, ALUA_LBD_SUP); 28372eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(unavailable, ALUA_U_SUP); 28382eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(standby, ALUA_S_SUP); 28392eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(active_optimized, ALUA_AO_SUP); 28402eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(active_nonoptimized, ALUA_AN_SUP); 28416be526c4SHannes Reinecke 28422eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_write_metadata_show( 28432eafd729SChristoph Hellwig struct config_item *item, char *page) 2844c66ac9dbSNicholas Bellinger { 28452eafd729SChristoph Hellwig return sprintf(page, "%d\n", 28462eafd729SChristoph Hellwig to_tg_pt_gp(item)->tg_pt_gp_write_metadata); 2847c66ac9dbSNicholas Bellinger } 2848c66ac9dbSNicholas Bellinger 28492eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_write_metadata_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 ret; 2855c66ac9dbSNicholas Bellinger 285657103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2857c66ac9dbSNicholas Bellinger if (ret < 0) { 28586708bb27SAndy Grover pr_err("Unable to extract alua_write_metadata\n"); 285957103d7fSJingoo Han return ret; 2860c66ac9dbSNicholas Bellinger } 2861c66ac9dbSNicholas Bellinger 2862c66ac9dbSNicholas Bellinger if ((tmp != 0) && (tmp != 1)) { 28636708bb27SAndy Grover pr_err("Illegal value for alua_write_metadata:" 2864c66ac9dbSNicholas Bellinger " %lu\n", tmp); 2865c66ac9dbSNicholas Bellinger return -EINVAL; 2866c66ac9dbSNicholas Bellinger } 2867c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2868c66ac9dbSNicholas Bellinger 2869c66ac9dbSNicholas Bellinger return count; 2870c66ac9dbSNicholas Bellinger } 2871c66ac9dbSNicholas Bellinger 28722eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_nonop_delay_msecs_show(struct config_item *item, 2873c66ac9dbSNicholas Bellinger char *page) 2874c66ac9dbSNicholas Bellinger { 28752eafd729SChristoph Hellwig return core_alua_show_nonop_delay_msecs(to_tg_pt_gp(item), page); 2876c66ac9dbSNicholas Bellinger } 2877c66ac9dbSNicholas Bellinger 28782eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_nonop_delay_msecs_store(struct config_item *item, 28792eafd729SChristoph Hellwig const char *page, size_t count) 2880c66ac9dbSNicholas Bellinger { 28812eafd729SChristoph Hellwig return core_alua_store_nonop_delay_msecs(to_tg_pt_gp(item), page, 28822eafd729SChristoph Hellwig count); 2883c66ac9dbSNicholas Bellinger } 2884c66ac9dbSNicholas Bellinger 28852eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_trans_delay_msecs_show(struct config_item *item, 2886c66ac9dbSNicholas Bellinger char *page) 2887c66ac9dbSNicholas Bellinger { 28882eafd729SChristoph Hellwig return core_alua_show_trans_delay_msecs(to_tg_pt_gp(item), page); 2889c66ac9dbSNicholas Bellinger } 2890c66ac9dbSNicholas Bellinger 28912eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_trans_delay_msecs_store(struct config_item *item, 28922eafd729SChristoph Hellwig const char *page, size_t count) 2893c66ac9dbSNicholas Bellinger { 28942eafd729SChristoph Hellwig return core_alua_store_trans_delay_msecs(to_tg_pt_gp(item), page, 28952eafd729SChristoph Hellwig count); 2896c66ac9dbSNicholas Bellinger } 2897c66ac9dbSNicholas Bellinger 28982eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_implicit_trans_secs_show( 28992eafd729SChristoph Hellwig struct config_item *item, char *page) 29002eafd729SChristoph Hellwig { 29012eafd729SChristoph Hellwig return core_alua_show_implicit_trans_secs(to_tg_pt_gp(item), page); 29022eafd729SChristoph Hellwig } 2903c66ac9dbSNicholas Bellinger 29042eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_implicit_trans_secs_store( 29052eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 29062eafd729SChristoph Hellwig { 29072eafd729SChristoph Hellwig return core_alua_store_implicit_trans_secs(to_tg_pt_gp(item), page, 29082eafd729SChristoph Hellwig count); 29092eafd729SChristoph Hellwig } 29102eafd729SChristoph Hellwig 29112eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_preferred_show(struct config_item *item, 29125b9a4d72SNicholas Bellinger char *page) 29135b9a4d72SNicholas Bellinger { 29142eafd729SChristoph Hellwig return core_alua_show_preferred_bit(to_tg_pt_gp(item), page); 29155b9a4d72SNicholas Bellinger } 29165b9a4d72SNicholas Bellinger 29172eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_preferred_store(struct config_item *item, 29182eafd729SChristoph Hellwig const char *page, size_t count) 29195b9a4d72SNicholas Bellinger { 29202eafd729SChristoph Hellwig return core_alua_store_preferred_bit(to_tg_pt_gp(item), page, count); 29215b9a4d72SNicholas Bellinger } 29225b9a4d72SNicholas Bellinger 29232eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_tg_pt_gp_id_show(struct config_item *item, 2924c66ac9dbSNicholas Bellinger char *page) 2925c66ac9dbSNicholas Bellinger { 29262eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2927c66ac9dbSNicholas Bellinger 29286708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) 2929c66ac9dbSNicholas Bellinger return 0; 2930c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 2931c66ac9dbSNicholas Bellinger } 2932c66ac9dbSNicholas Bellinger 29332eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_tg_pt_gp_id_store(struct config_item *item, 29342eafd729SChristoph Hellwig const char *page, size_t count) 2935c66ac9dbSNicholas Bellinger { 29362eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2937c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2938c66ac9dbSNicholas Bellinger unsigned long tg_pt_gp_id; 2939c66ac9dbSNicholas Bellinger int ret; 2940c66ac9dbSNicholas Bellinger 294157103d7fSJingoo Han ret = kstrtoul(page, 0, &tg_pt_gp_id); 2942c66ac9dbSNicholas Bellinger if (ret < 0) { 29433d035237SHannes Reinecke pr_err("ALUA tg_pt_gp_id: invalid value '%s' for tg_pt_gp_id\n", 29443d035237SHannes Reinecke page); 294557103d7fSJingoo Han return ret; 2946c66ac9dbSNicholas Bellinger } 2947c66ac9dbSNicholas Bellinger if (tg_pt_gp_id > 0x0000ffff) { 29483d035237SHannes Reinecke pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum: 0x0000ffff\n", 29493d035237SHannes Reinecke tg_pt_gp_id); 2950c66ac9dbSNicholas Bellinger return -EINVAL; 2951c66ac9dbSNicholas Bellinger } 2952c66ac9dbSNicholas Bellinger 2953c66ac9dbSNicholas Bellinger ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 2954c66ac9dbSNicholas Bellinger if (ret < 0) 2955c66ac9dbSNicholas Bellinger return -EINVAL; 2956c66ac9dbSNicholas Bellinger 29576708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 2958c66ac9dbSNicholas Bellinger "core/alua/tg_pt_gps/%s to ID: %hu\n", 2959c66ac9dbSNicholas Bellinger config_item_name(&alua_tg_pt_gp_cg->cg_item), 2960c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_id); 2961c66ac9dbSNicholas Bellinger 2962c66ac9dbSNicholas Bellinger return count; 2963c66ac9dbSNicholas Bellinger } 2964c66ac9dbSNicholas Bellinger 29652eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_members_show(struct config_item *item, 2966c66ac9dbSNicholas Bellinger char *page) 2967c66ac9dbSNicholas Bellinger { 29682eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2969c66ac9dbSNicholas Bellinger struct se_lun *lun; 2970c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2971c66ac9dbSNicholas Bellinger unsigned char buf[TG_PT_GROUP_NAME_BUF]; 2972c66ac9dbSNicholas Bellinger 2973c66ac9dbSNicholas Bellinger memset(buf, 0, TG_PT_GROUP_NAME_BUF); 2974c66ac9dbSNicholas Bellinger 2975c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp->tg_pt_gp_lock); 2976adf653f9SChristoph Hellwig list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, 2977adf653f9SChristoph Hellwig lun_tg_pt_gp_link) { 2978adf653f9SChristoph Hellwig struct se_portal_group *tpg = lun->lun_tpg; 2979c66ac9dbSNicholas Bellinger 2980c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 298130c7ca93SDavid Disseldorp "/%s\n", tpg->se_tpg_tfo->fabric_name, 2982e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), 2983e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 2984c66ac9dbSNicholas Bellinger config_item_name(&lun->lun_group.cg_item)); 2985c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2986c66ac9dbSNicholas Bellinger 2987c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 29886708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2989c66ac9dbSNicholas Bellinger "_members buffer\n"); 2990c66ac9dbSNicholas Bellinger break; 2991c66ac9dbSNicholas Bellinger } 2992c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2993c66ac9dbSNicholas Bellinger len += cur_len; 2994c66ac9dbSNicholas Bellinger } 2995c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 2996c66ac9dbSNicholas Bellinger 2997c66ac9dbSNicholas Bellinger return len; 2998c66ac9dbSNicholas Bellinger } 2999c66ac9dbSNicholas Bellinger 30002eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_state); 30012eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_status); 30022eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_type); 30032eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_transitioning); 30042eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_offline); 30052eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_lba_dependent); 30062eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_unavailable); 30072eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_standby); 30082eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_optimized); 30092eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_nonoptimized); 30102eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_write_metadata); 30112eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, nonop_delay_msecs); 30122eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, trans_delay_msecs); 30132eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, implicit_trans_secs); 30142eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, preferred); 30152eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, tg_pt_gp_id); 30162eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_tg_pt_gp_, members); 3017c66ac9dbSNicholas Bellinger 3018c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 30192eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_state, 30202eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_status, 30212eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_type, 30222eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_transitioning, 30232eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_offline, 30242eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_lba_dependent, 30252eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_unavailable, 30262eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_standby, 30272eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_active_nonoptimized, 30282eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_active_optimized, 30292eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_write_metadata, 30302eafd729SChristoph Hellwig &target_tg_pt_gp_attr_nonop_delay_msecs, 30312eafd729SChristoph Hellwig &target_tg_pt_gp_attr_trans_delay_msecs, 30322eafd729SChristoph Hellwig &target_tg_pt_gp_attr_implicit_trans_secs, 30332eafd729SChristoph Hellwig &target_tg_pt_gp_attr_preferred, 30342eafd729SChristoph Hellwig &target_tg_pt_gp_attr_tg_pt_gp_id, 30352eafd729SChristoph Hellwig &target_tg_pt_gp_attr_members, 3036c66ac9dbSNicholas Bellinger NULL, 3037c66ac9dbSNicholas Bellinger }; 3038c66ac9dbSNicholas Bellinger 30391f6fe7cbSNicholas Bellinger static void target_core_alua_tg_pt_gp_release(struct config_item *item) 30401f6fe7cbSNicholas Bellinger { 30411f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 30421f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 30431f6fe7cbSNicholas Bellinger 30441f6fe7cbSNicholas Bellinger core_alua_free_tg_pt_gp(tg_pt_gp); 30451f6fe7cbSNicholas Bellinger } 30461f6fe7cbSNicholas Bellinger 3047c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 30481f6fe7cbSNicholas Bellinger .release = target_core_alua_tg_pt_gp_release, 3049c66ac9dbSNicholas Bellinger }; 3050c66ac9dbSNicholas Bellinger 3051ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_tg_pt_gp_cit = { 3052c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 3053c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_tg_pt_gp_attrs, 3054c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3055c66ac9dbSNicholas Bellinger }; 3056c66ac9dbSNicholas Bellinger 3057c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 3058c66ac9dbSNicholas Bellinger 305972aca57bSNicholas Bellinger /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 3060c66ac9dbSNicholas Bellinger 3061c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_tg_pt_gp( 3062c66ac9dbSNicholas Bellinger struct config_group *group, 3063c66ac9dbSNicholas Bellinger const char *name) 3064c66ac9dbSNicholas Bellinger { 3065c66ac9dbSNicholas Bellinger struct t10_alua *alua = container_of(group, struct t10_alua, 3066c66ac9dbSNicholas Bellinger alua_tg_pt_gps_group); 3067c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 3068c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = NULL; 3069c66ac9dbSNicholas Bellinger struct config_item *alua_tg_pt_gp_ci = NULL; 3070c66ac9dbSNicholas Bellinger 30710fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); 30726708bb27SAndy Grover if (!tg_pt_gp) 3073c66ac9dbSNicholas Bellinger return NULL; 3074c66ac9dbSNicholas Bellinger 3075c66ac9dbSNicholas Bellinger alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 3076c66ac9dbSNicholas Bellinger alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 3077c66ac9dbSNicholas Bellinger 3078c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_tg_pt_gp_cg, name, 3079c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_cit); 3080c66ac9dbSNicholas Bellinger 30816708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 3082c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s\n", 3083c66ac9dbSNicholas Bellinger config_item_name(alua_tg_pt_gp_ci)); 3084c66ac9dbSNicholas Bellinger 3085c66ac9dbSNicholas Bellinger return alua_tg_pt_gp_cg; 3086c66ac9dbSNicholas Bellinger } 3087c66ac9dbSNicholas Bellinger 3088c66ac9dbSNicholas Bellinger static void target_core_alua_drop_tg_pt_gp( 3089c66ac9dbSNicholas Bellinger struct config_group *group, 3090c66ac9dbSNicholas Bellinger struct config_item *item) 3091c66ac9dbSNicholas Bellinger { 3092c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 3093c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 3094c66ac9dbSNicholas Bellinger 30956708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 3096c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s, ID: %hu\n", 3097c66ac9dbSNicholas Bellinger config_item_name(item), tg_pt_gp->tg_pt_gp_id); 30981f6fe7cbSNicholas Bellinger /* 30991f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 31001f6fe7cbSNicholas Bellinger * -> target_core_alua_tg_pt_gp_release(). 31011f6fe7cbSNicholas Bellinger */ 3102c66ac9dbSNicholas Bellinger config_item_put(item); 3103c66ac9dbSNicholas Bellinger } 3104c66ac9dbSNicholas Bellinger 3105c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 3106c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_tg_pt_gp, 3107c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_tg_pt_gp, 3108c66ac9dbSNicholas Bellinger }; 3109c66ac9dbSNicholas Bellinger 311072aca57bSNicholas Bellinger TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); 3111c66ac9dbSNicholas Bellinger 311272aca57bSNicholas Bellinger /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 3113c66ac9dbSNicholas Bellinger 3114c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_cit */ 3115c66ac9dbSNicholas Bellinger 3116c66ac9dbSNicholas Bellinger /* 3117c66ac9dbSNicholas Bellinger * target_core_alua_cit is a ConfigFS group that lives under 3118c66ac9dbSNicholas Bellinger * /sys/kernel/config/target/core/alua. There are default groups 3119c66ac9dbSNicholas Bellinger * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 3120c66ac9dbSNicholas Bellinger * target_core_alua_cit in target_core_init_configfs() below. 3121c66ac9dbSNicholas Bellinger */ 3122ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_cit = { 3123c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3124c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3125c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3126c66ac9dbSNicholas Bellinger }; 3127c66ac9dbSNicholas Bellinger 3128c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_cit */ 3129c66ac9dbSNicholas Bellinger 3130d23ab570SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_stat_cit */ 313112d23384SNicholas Bellinger 313212d23384SNicholas Bellinger static struct config_group *target_core_stat_mkdir( 313312d23384SNicholas Bellinger struct config_group *group, 313412d23384SNicholas Bellinger const char *name) 313512d23384SNicholas Bellinger { 313612d23384SNicholas Bellinger return ERR_PTR(-ENOSYS); 313712d23384SNicholas Bellinger } 313812d23384SNicholas Bellinger 313912d23384SNicholas Bellinger static void target_core_stat_rmdir( 314012d23384SNicholas Bellinger struct config_group *group, 314112d23384SNicholas Bellinger struct config_item *item) 314212d23384SNicholas Bellinger { 314312d23384SNicholas Bellinger return; 314412d23384SNicholas Bellinger } 314512d23384SNicholas Bellinger 314612d23384SNicholas Bellinger static struct configfs_group_operations target_core_stat_group_ops = { 314712d23384SNicholas Bellinger .make_group = &target_core_stat_mkdir, 314812d23384SNicholas Bellinger .drop_item = &target_core_stat_rmdir, 314912d23384SNicholas Bellinger }; 315012d23384SNicholas Bellinger 3151d23ab570SNicholas Bellinger TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); 315212d23384SNicholas Bellinger 3153d23ab570SNicholas Bellinger /* End functions for struct config_item_type tb_dev_stat_cit */ 315412d23384SNicholas Bellinger 3155c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_hba_cit */ 3156c66ac9dbSNicholas Bellinger 3157c66ac9dbSNicholas Bellinger static struct config_group *target_core_make_subdev( 3158c66ac9dbSNicholas Bellinger struct config_group *group, 3159c66ac9dbSNicholas Bellinger const char *name) 3160c66ac9dbSNicholas Bellinger { 3161c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 3162c66ac9dbSNicholas Bellinger struct config_item *hba_ci = &group->cg_item; 3163c66ac9dbSNicholas Bellinger struct se_hba *hba = item_to_hba(hba_ci); 31640a06d430SChristoph Hellwig struct target_backend *tb = hba->backend; 31650fd97ccfSChristoph Hellwig struct se_device *dev; 316612d23384SNicholas Bellinger int errno = -ENOMEM, ret; 3167c66ac9dbSNicholas Bellinger 316812d23384SNicholas Bellinger ret = mutex_lock_interruptible(&hba->hba_access_mutex); 316912d23384SNicholas Bellinger if (ret) 317012d23384SNicholas Bellinger return ERR_PTR(ret); 3171c66ac9dbSNicholas Bellinger 31720fd97ccfSChristoph Hellwig dev = target_alloc_device(hba, name); 31730fd97ccfSChristoph Hellwig if (!dev) 31740fd97ccfSChristoph Hellwig goto out_unlock; 3175c66ac9dbSNicholas Bellinger 31761ae1602dSChristoph Hellwig config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit); 3177c66ac9dbSNicholas Bellinger 31788dc31ff9SMike Christie config_group_init_type_name(&dev->dev_action_group, "action", 31798dc31ff9SMike Christie &tb->tb_dev_action_cit); 31808dc31ff9SMike Christie configfs_add_default_group(&dev->dev_action_group, &dev->dev_group); 31818dc31ff9SMike Christie 31820fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", 31830a06d430SChristoph Hellwig &tb->tb_dev_attrib_cit); 31841ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group); 31851ae1602dSChristoph Hellwig 31860fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_pr_group, "pr", 31870a06d430SChristoph Hellwig &tb->tb_dev_pr_cit); 31881ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_pr_group, &dev->dev_group); 31891ae1602dSChristoph Hellwig 31900fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", 31910a06d430SChristoph Hellwig &tb->tb_dev_wwn_cit); 31921ae1602dSChristoph Hellwig configfs_add_default_group(&dev->t10_wwn.t10_wwn_group, 31931ae1602dSChristoph Hellwig &dev->dev_group); 31941ae1602dSChristoph Hellwig 31950fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, 31960a06d430SChristoph Hellwig "alua", &tb->tb_dev_alua_tg_pt_gps_cit); 31971ae1602dSChristoph Hellwig configfs_add_default_group(&dev->t10_alua.alua_tg_pt_gps_group, 31981ae1602dSChristoph Hellwig &dev->dev_group); 31991ae1602dSChristoph Hellwig 32000fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_stat_grps.stat_group, 32010a06d430SChristoph Hellwig "statistics", &tb->tb_dev_stat_cit); 32021ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_stat_grps.stat_group, 32031ae1602dSChristoph Hellwig &dev->dev_group); 320412d23384SNicholas Bellinger 3205c66ac9dbSNicholas Bellinger /* 320612d23384SNicholas Bellinger * Add core/$HBA/$DEV/alua/default_tg_pt_gp 3207c66ac9dbSNicholas Bellinger */ 32080fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); 32096708bb27SAndy Grover if (!tg_pt_gp) 32101ae1602dSChristoph Hellwig goto out_free_device; 32110fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 3212c66ac9dbSNicholas Bellinger 3213c66ac9dbSNicholas Bellinger config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 3214c66ac9dbSNicholas Bellinger "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 32151ae1602dSChristoph Hellwig configfs_add_default_group(&tg_pt_gp->tg_pt_gp_group, 32161ae1602dSChristoph Hellwig &dev->t10_alua.alua_tg_pt_gps_group); 32171ae1602dSChristoph Hellwig 321812d23384SNicholas Bellinger /* 321912d23384SNicholas Bellinger * Add core/$HBA/$DEV/statistics/ default groups 322012d23384SNicholas Bellinger */ 32210fd97ccfSChristoph Hellwig target_stat_setup_dev_default_groups(dev); 3222c66ac9dbSNicholas Bellinger 3223c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 32241ae1602dSChristoph Hellwig return &dev->dev_group; 32250fd97ccfSChristoph Hellwig 32260fd97ccfSChristoph Hellwig out_free_device: 32270fd97ccfSChristoph Hellwig target_free_device(dev); 32280fd97ccfSChristoph Hellwig out_unlock: 3229c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 323012d23384SNicholas Bellinger return ERR_PTR(errno); 3231c66ac9dbSNicholas Bellinger } 3232c66ac9dbSNicholas Bellinger 3233c66ac9dbSNicholas Bellinger static void target_core_drop_subdev( 3234c66ac9dbSNicholas Bellinger struct config_group *group, 3235c66ac9dbSNicholas Bellinger struct config_item *item) 3236c66ac9dbSNicholas Bellinger { 32370fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 32380fd97ccfSChristoph Hellwig struct se_device *dev = 32390fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 3240c66ac9dbSNicholas Bellinger struct se_hba *hba; 3241c66ac9dbSNicholas Bellinger 32420fd97ccfSChristoph Hellwig hba = item_to_hba(&dev->se_hba->hba_group.cg_item); 3243c66ac9dbSNicholas Bellinger 32441f6fe7cbSNicholas Bellinger mutex_lock(&hba->hba_access_mutex); 3245c66ac9dbSNicholas Bellinger 32461ae1602dSChristoph Hellwig configfs_remove_default_groups(&dev->dev_stat_grps.stat_group); 32471ae1602dSChristoph Hellwig configfs_remove_default_groups(&dev->t10_alua.alua_tg_pt_gps_group); 324812d23384SNicholas Bellinger 32491f6fe7cbSNicholas Bellinger /* 32501f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 32511f6fe7cbSNicholas Bellinger * directly from target_core_alua_tg_pt_gp_release(). 32521f6fe7cbSNicholas Bellinger */ 32530fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = NULL; 3254c66ac9dbSNicholas Bellinger 32551ae1602dSChristoph Hellwig configfs_remove_default_groups(dev_cg); 32561ae1602dSChristoph Hellwig 32571f6fe7cbSNicholas Bellinger /* 32580fd97ccfSChristoph Hellwig * se_dev is released from target_core_dev_item_ops->release() 32591f6fe7cbSNicholas Bellinger */ 3260c66ac9dbSNicholas Bellinger config_item_put(item); 3261c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 3262c66ac9dbSNicholas Bellinger } 3263c66ac9dbSNicholas Bellinger 3264c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_hba_group_ops = { 3265c66ac9dbSNicholas Bellinger .make_group = target_core_make_subdev, 3266c66ac9dbSNicholas Bellinger .drop_item = target_core_drop_subdev, 3267c66ac9dbSNicholas Bellinger }; 3268c66ac9dbSNicholas Bellinger 3269c66ac9dbSNicholas Bellinger 32702eafd729SChristoph Hellwig static inline struct se_hba *to_hba(struct config_item *item) 3271c66ac9dbSNicholas Bellinger { 32722eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_hba, hba_group); 32732eafd729SChristoph Hellwig } 32742eafd729SChristoph Hellwig 32752eafd729SChristoph Hellwig static ssize_t target_hba_info_show(struct config_item *item, char *page) 32762eafd729SChristoph Hellwig { 32772eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 32782eafd729SChristoph Hellwig 3279c66ac9dbSNicholas Bellinger return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 32800a06d430SChristoph Hellwig hba->hba_id, hba->backend->ops->name, 3281ce8dd25dSChristoph Hellwig TARGET_CORE_VERSION); 3282c66ac9dbSNicholas Bellinger } 3283c66ac9dbSNicholas Bellinger 32842eafd729SChristoph Hellwig static ssize_t target_hba_mode_show(struct config_item *item, char *page) 3285c66ac9dbSNicholas Bellinger { 32862eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 3287c66ac9dbSNicholas Bellinger int hba_mode = 0; 3288c66ac9dbSNicholas Bellinger 3289c66ac9dbSNicholas Bellinger if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 3290c66ac9dbSNicholas Bellinger hba_mode = 1; 3291c66ac9dbSNicholas Bellinger 3292c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", hba_mode); 3293c66ac9dbSNicholas Bellinger } 3294c66ac9dbSNicholas Bellinger 32952eafd729SChristoph Hellwig static ssize_t target_hba_mode_store(struct config_item *item, 3296c66ac9dbSNicholas Bellinger const char *page, size_t count) 3297c66ac9dbSNicholas Bellinger { 32982eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 3299c66ac9dbSNicholas Bellinger unsigned long mode_flag; 3300c66ac9dbSNicholas Bellinger int ret; 3301c66ac9dbSNicholas Bellinger 33020a06d430SChristoph Hellwig if (hba->backend->ops->pmode_enable_hba == NULL) 3303c66ac9dbSNicholas Bellinger return -EINVAL; 3304c66ac9dbSNicholas Bellinger 330557103d7fSJingoo Han ret = kstrtoul(page, 0, &mode_flag); 3306c66ac9dbSNicholas Bellinger if (ret < 0) { 33076708bb27SAndy Grover pr_err("Unable to extract hba mode flag: %d\n", ret); 330857103d7fSJingoo Han return ret; 3309c66ac9dbSNicholas Bellinger } 3310c66ac9dbSNicholas Bellinger 33110fd97ccfSChristoph Hellwig if (hba->dev_count) { 33126708bb27SAndy Grover pr_err("Unable to set hba_mode with active devices\n"); 3313c66ac9dbSNicholas Bellinger return -EINVAL; 3314c66ac9dbSNicholas Bellinger } 3315c66ac9dbSNicholas Bellinger 33160a06d430SChristoph Hellwig ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag); 3317c66ac9dbSNicholas Bellinger if (ret < 0) 3318c66ac9dbSNicholas Bellinger return -EINVAL; 3319c66ac9dbSNicholas Bellinger if (ret > 0) 3320c66ac9dbSNicholas Bellinger hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 3321c66ac9dbSNicholas Bellinger else if (ret == 0) 3322c66ac9dbSNicholas Bellinger hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 3323c66ac9dbSNicholas Bellinger 3324c66ac9dbSNicholas Bellinger return count; 3325c66ac9dbSNicholas Bellinger } 3326c66ac9dbSNicholas Bellinger 33272eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_, hba_info); 33282eafd729SChristoph Hellwig CONFIGFS_ATTR(target_, hba_mode); 3329c66ac9dbSNicholas Bellinger 33301f6fe7cbSNicholas Bellinger static void target_core_hba_release(struct config_item *item) 33311f6fe7cbSNicholas Bellinger { 33321f6fe7cbSNicholas Bellinger struct se_hba *hba = container_of(to_config_group(item), 33331f6fe7cbSNicholas Bellinger struct se_hba, hba_group); 33341f6fe7cbSNicholas Bellinger core_delete_hba(hba); 33351f6fe7cbSNicholas Bellinger } 33361f6fe7cbSNicholas Bellinger 3337c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_hba_attrs[] = { 33382eafd729SChristoph Hellwig &target_attr_hba_info, 33392eafd729SChristoph Hellwig &target_attr_hba_mode, 3340c66ac9dbSNicholas Bellinger NULL, 3341c66ac9dbSNicholas Bellinger }; 3342c66ac9dbSNicholas Bellinger 3343c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_hba_item_ops = { 33441f6fe7cbSNicholas Bellinger .release = target_core_hba_release, 3345c66ac9dbSNicholas Bellinger }; 3346c66ac9dbSNicholas Bellinger 3347ece550b5SBhumika Goyal static const struct config_item_type target_core_hba_cit = { 3348c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_hba_item_ops, 3349c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_hba_group_ops, 3350c66ac9dbSNicholas Bellinger .ct_attrs = target_core_hba_attrs, 3351c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3352c66ac9dbSNicholas Bellinger }; 3353c66ac9dbSNicholas Bellinger 3354c66ac9dbSNicholas Bellinger static struct config_group *target_core_call_addhbatotarget( 3355c66ac9dbSNicholas Bellinger struct config_group *group, 3356c66ac9dbSNicholas Bellinger const char *name) 3357c66ac9dbSNicholas Bellinger { 3358c66ac9dbSNicholas Bellinger char *se_plugin_str, *str, *str2; 3359c66ac9dbSNicholas Bellinger struct se_hba *hba; 3360c66ac9dbSNicholas Bellinger char buf[TARGET_CORE_NAME_MAX_LEN]; 3361c66ac9dbSNicholas Bellinger unsigned long plugin_dep_id = 0; 3362c66ac9dbSNicholas Bellinger int ret; 3363c66ac9dbSNicholas Bellinger 3364c66ac9dbSNicholas Bellinger memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); 336560d645a4SDan Carpenter if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 33666708bb27SAndy Grover pr_err("Passed *name strlen(): %d exceeds" 3367c66ac9dbSNicholas Bellinger " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 3368c66ac9dbSNicholas Bellinger TARGET_CORE_NAME_MAX_LEN); 3369c66ac9dbSNicholas Bellinger return ERR_PTR(-ENAMETOOLONG); 3370c66ac9dbSNicholas Bellinger } 3371c66ac9dbSNicholas Bellinger snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 3372c66ac9dbSNicholas Bellinger 3373c66ac9dbSNicholas Bellinger str = strstr(buf, "_"); 33746708bb27SAndy Grover if (!str) { 33756708bb27SAndy Grover pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 3376c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 3377c66ac9dbSNicholas Bellinger } 3378c66ac9dbSNicholas Bellinger se_plugin_str = buf; 3379c66ac9dbSNicholas Bellinger /* 3380c66ac9dbSNicholas Bellinger * Special case for subsystem plugins that have "_" in their names. 3381c66ac9dbSNicholas Bellinger * Namely rd_direct and rd_mcp.. 3382c66ac9dbSNicholas Bellinger */ 3383c66ac9dbSNicholas Bellinger str2 = strstr(str+1, "_"); 33846708bb27SAndy Grover if (str2) { 3385c66ac9dbSNicholas Bellinger *str2 = '\0'; /* Terminate for *se_plugin_str */ 3386c66ac9dbSNicholas Bellinger str2++; /* Skip to start of plugin dependent ID */ 3387c66ac9dbSNicholas Bellinger str = str2; 3388c66ac9dbSNicholas Bellinger } else { 3389c66ac9dbSNicholas Bellinger *str = '\0'; /* Terminate for *se_plugin_str */ 3390c66ac9dbSNicholas Bellinger str++; /* Skip to start of plugin dependent ID */ 3391c66ac9dbSNicholas Bellinger } 3392c66ac9dbSNicholas Bellinger 339357103d7fSJingoo Han ret = kstrtoul(str, 0, &plugin_dep_id); 3394c66ac9dbSNicholas Bellinger if (ret < 0) { 339557103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 3396c66ac9dbSNicholas Bellinger " plugin_dep_id\n", ret); 339757103d7fSJingoo Han return ERR_PTR(ret); 3398c66ac9dbSNicholas Bellinger } 3399c66ac9dbSNicholas Bellinger /* 3400c66ac9dbSNicholas Bellinger * Load up TCM subsystem plugins if they have not already been loaded. 3401c66ac9dbSNicholas Bellinger */ 3402dbc5623eSNicholas Bellinger transport_subsystem_check_init(); 3403c66ac9dbSNicholas Bellinger 3404c66ac9dbSNicholas Bellinger hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 3405c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 3406c66ac9dbSNicholas Bellinger return ERR_CAST(hba); 3407c66ac9dbSNicholas Bellinger 3408c66ac9dbSNicholas Bellinger config_group_init_type_name(&hba->hba_group, name, 3409c66ac9dbSNicholas Bellinger &target_core_hba_cit); 3410c66ac9dbSNicholas Bellinger 3411c66ac9dbSNicholas Bellinger return &hba->hba_group; 3412c66ac9dbSNicholas Bellinger } 3413c66ac9dbSNicholas Bellinger 3414c66ac9dbSNicholas Bellinger static void target_core_call_delhbafromtarget( 3415c66ac9dbSNicholas Bellinger struct config_group *group, 3416c66ac9dbSNicholas Bellinger struct config_item *item) 3417c66ac9dbSNicholas Bellinger { 34181f6fe7cbSNicholas Bellinger /* 34191f6fe7cbSNicholas Bellinger * core_delete_hba() is called from target_core_hba_item_ops->release() 34201f6fe7cbSNicholas Bellinger * -> target_core_hba_release() 34211f6fe7cbSNicholas Bellinger */ 3422c66ac9dbSNicholas Bellinger config_item_put(item); 3423c66ac9dbSNicholas Bellinger } 3424c66ac9dbSNicholas Bellinger 3425c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_group_ops = { 3426c66ac9dbSNicholas Bellinger .make_group = target_core_call_addhbatotarget, 3427c66ac9dbSNicholas Bellinger .drop_item = target_core_call_delhbafromtarget, 3428c66ac9dbSNicholas Bellinger }; 3429c66ac9dbSNicholas Bellinger 3430ece550b5SBhumika Goyal static const struct config_item_type target_core_cit = { 3431c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3432c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_group_ops, 3433c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3434c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3435c66ac9dbSNicholas Bellinger }; 3436c66ac9dbSNicholas Bellinger 3437c66ac9dbSNicholas Bellinger /* Stop functions for struct config_item_type target_core_hba_cit */ 3438c66ac9dbSNicholas Bellinger 34390a06d430SChristoph Hellwig void target_setup_backend_cits(struct target_backend *tb) 344073112edcSNicholas Bellinger { 34410a06d430SChristoph Hellwig target_core_setup_dev_cit(tb); 34428dc31ff9SMike Christie target_core_setup_dev_action_cit(tb); 34430a06d430SChristoph Hellwig target_core_setup_dev_attrib_cit(tb); 34440a06d430SChristoph Hellwig target_core_setup_dev_pr_cit(tb); 34450a06d430SChristoph Hellwig target_core_setup_dev_wwn_cit(tb); 34460a06d430SChristoph Hellwig target_core_setup_dev_alua_tg_pt_gps_cit(tb); 34470a06d430SChristoph Hellwig target_core_setup_dev_stat_cit(tb); 344873112edcSNicholas Bellinger } 344973112edcSNicholas Bellinger 345078a6295cSLee Duncan static void target_init_dbroot(void) 345178a6295cSLee Duncan { 345278a6295cSLee Duncan struct file *fp; 345378a6295cSLee Duncan 345478a6295cSLee Duncan snprintf(db_root_stage, DB_ROOT_LEN, DB_ROOT_PREFERRED); 345578a6295cSLee Duncan fp = filp_open(db_root_stage, O_RDONLY, 0); 345678a6295cSLee Duncan if (IS_ERR(fp)) { 345778a6295cSLee Duncan pr_err("db_root: cannot open: %s\n", db_root_stage); 345878a6295cSLee Duncan return; 345978a6295cSLee Duncan } 346078a6295cSLee Duncan if (!S_ISDIR(file_inode(fp)->i_mode)) { 346178a6295cSLee Duncan filp_close(fp, NULL); 346278a6295cSLee Duncan pr_err("db_root: not a valid directory: %s\n", db_root_stage); 346378a6295cSLee Duncan return; 346478a6295cSLee Duncan } 346578a6295cSLee Duncan filp_close(fp, NULL); 346678a6295cSLee Duncan 346778a6295cSLee Duncan strncpy(db_root, db_root_stage, DB_ROOT_LEN); 346878a6295cSLee Duncan pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); 346978a6295cSLee Duncan } 347078a6295cSLee Duncan 347154550fabSAxel Lin static int __init target_core_init_configfs(void) 3472c66ac9dbSNicholas Bellinger { 3473d588cf8fSChristoph Hellwig struct configfs_subsystem *subsys = &target_core_fabrics; 3474c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 3475c66ac9dbSNicholas Bellinger int ret; 3476c66ac9dbSNicholas Bellinger 34776708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 3478c66ac9dbSNicholas Bellinger " Engine: %s on %s/%s on "UTS_RELEASE"\n", 3479c66ac9dbSNicholas Bellinger TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 3480c66ac9dbSNicholas Bellinger 3481c66ac9dbSNicholas Bellinger config_group_init(&subsys->su_group); 3482c66ac9dbSNicholas Bellinger mutex_init(&subsys->su_mutex); 3483c66ac9dbSNicholas Bellinger 3484e3d6f909SAndy Grover ret = init_se_kmem_caches(); 3485c66ac9dbSNicholas Bellinger if (ret < 0) 3486e3d6f909SAndy Grover return ret; 3487c66ac9dbSNicholas Bellinger /* 3488c66ac9dbSNicholas Bellinger * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 3489c66ac9dbSNicholas Bellinger * and ALUA Logical Unit Group and Target Port Group infrastructure. 3490c66ac9dbSNicholas Bellinger */ 34911ae1602dSChristoph Hellwig config_group_init_type_name(&target_core_hbagroup, "core", 34921ae1602dSChristoph Hellwig &target_core_cit); 34931ae1602dSChristoph Hellwig configfs_add_default_group(&target_core_hbagroup, &subsys->su_group); 3494c66ac9dbSNicholas Bellinger 3495c66ac9dbSNicholas Bellinger /* 3496c66ac9dbSNicholas Bellinger * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 3497c66ac9dbSNicholas Bellinger */ 34981ae1602dSChristoph Hellwig config_group_init_type_name(&alua_group, "alua", &target_core_alua_cit); 34991ae1602dSChristoph Hellwig configfs_add_default_group(&alua_group, &target_core_hbagroup); 35001ae1602dSChristoph Hellwig 3501c66ac9dbSNicholas Bellinger /* 3502c66ac9dbSNicholas Bellinger * Add ALUA Logical Unit Group and Target Port Group ConfigFS 3503c66ac9dbSNicholas Bellinger * groups under /sys/kernel/config/target/core/alua/ 3504c66ac9dbSNicholas Bellinger */ 35051ae1602dSChristoph Hellwig config_group_init_type_name(&alua_lu_gps_group, "lu_gps", 35061ae1602dSChristoph Hellwig &target_core_alua_lu_gps_cit); 35071ae1602dSChristoph Hellwig configfs_add_default_group(&alua_lu_gps_group, &alua_group); 3508c66ac9dbSNicholas Bellinger 3509c66ac9dbSNicholas Bellinger /* 3510c66ac9dbSNicholas Bellinger * Add core/alua/lu_gps/default_lu_gp 3511c66ac9dbSNicholas Bellinger */ 3512c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 351337bb7899SPeter Senna Tschudin if (IS_ERR(lu_gp)) { 351437bb7899SPeter Senna Tschudin ret = -ENOMEM; 3515c66ac9dbSNicholas Bellinger goto out_global; 351637bb7899SPeter Senna Tschudin } 3517c66ac9dbSNicholas Bellinger 3518c66ac9dbSNicholas Bellinger config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 3519c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 35201ae1602dSChristoph Hellwig configfs_add_default_group(&lu_gp->lu_gp_group, &alua_lu_gps_group); 35211ae1602dSChristoph Hellwig 3522e3d6f909SAndy Grover default_lu_gp = lu_gp; 35231ae1602dSChristoph Hellwig 3524c66ac9dbSNicholas Bellinger /* 3525c66ac9dbSNicholas Bellinger * Register the target_core_mod subsystem with configfs. 3526c66ac9dbSNicholas Bellinger */ 3527c66ac9dbSNicholas Bellinger ret = configfs_register_subsystem(subsys); 3528c66ac9dbSNicholas Bellinger if (ret < 0) { 35296708bb27SAndy Grover pr_err("Error %d while registering subsystem %s\n", 3530c66ac9dbSNicholas Bellinger ret, subsys->su_group.cg_item.ci_namebuf); 3531c66ac9dbSNicholas Bellinger goto out_global; 3532c66ac9dbSNicholas Bellinger } 35336708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 3534ce8dd25dSChristoph Hellwig " Infrastructure: "TARGET_CORE_VERSION" on %s/%s" 3535c66ac9dbSNicholas Bellinger " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 3536c66ac9dbSNicholas Bellinger /* 3537c66ac9dbSNicholas Bellinger * Register built-in RAMDISK subsystem logic for virtual LUN 0 3538c66ac9dbSNicholas Bellinger */ 3539c66ac9dbSNicholas Bellinger ret = rd_module_init(); 3540c66ac9dbSNicholas Bellinger if (ret < 0) 3541c66ac9dbSNicholas Bellinger goto out; 3542c66ac9dbSNicholas Bellinger 35430d0f9dfbSRoland Dreier ret = core_dev_setup_virtual_lun0(); 35440d0f9dfbSRoland Dreier if (ret < 0) 3545c66ac9dbSNicholas Bellinger goto out; 3546c66ac9dbSNicholas Bellinger 3547f99715acSNicholas Bellinger ret = target_xcopy_setup_pt(); 3548f99715acSNicholas Bellinger if (ret < 0) 3549f99715acSNicholas Bellinger goto out; 3550f99715acSNicholas Bellinger 355178a6295cSLee Duncan target_init_dbroot(); 355278a6295cSLee Duncan 3553c66ac9dbSNicholas Bellinger return 0; 3554c66ac9dbSNicholas Bellinger 3555c66ac9dbSNicholas Bellinger out: 3556c66ac9dbSNicholas Bellinger configfs_unregister_subsystem(subsys); 3557c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3558c66ac9dbSNicholas Bellinger rd_module_exit(); 3559c66ac9dbSNicholas Bellinger out_global: 3560e3d6f909SAndy Grover if (default_lu_gp) { 3561e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3562e3d6f909SAndy Grover default_lu_gp = NULL; 3563c66ac9dbSNicholas Bellinger } 3564e3d6f909SAndy Grover release_se_kmem_caches(); 3565e3d6f909SAndy Grover return ret; 3566c66ac9dbSNicholas Bellinger } 3567c66ac9dbSNicholas Bellinger 356854550fabSAxel Lin static void __exit target_core_exit_configfs(void) 3569c66ac9dbSNicholas Bellinger { 35701ae1602dSChristoph Hellwig configfs_remove_default_groups(&alua_lu_gps_group); 35711ae1602dSChristoph Hellwig configfs_remove_default_groups(&alua_group); 35721ae1602dSChristoph Hellwig configfs_remove_default_groups(&target_core_hbagroup); 3573c66ac9dbSNicholas Bellinger 35747c2bf6e9SNicholas Bellinger /* 35757c2bf6e9SNicholas Bellinger * We expect subsys->su_group.default_groups to be released 35767c2bf6e9SNicholas Bellinger * by configfs subsystem provider logic.. 35777c2bf6e9SNicholas Bellinger */ 3578d588cf8fSChristoph Hellwig configfs_unregister_subsystem(&target_core_fabrics); 3579c66ac9dbSNicholas Bellinger 3580e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3581e3d6f909SAndy Grover default_lu_gp = NULL; 35827c2bf6e9SNicholas Bellinger 35836708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3584c66ac9dbSNicholas Bellinger " Infrastructure\n"); 3585c66ac9dbSNicholas Bellinger 3586c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3587c66ac9dbSNicholas Bellinger rd_module_exit(); 3588f99715acSNicholas Bellinger target_xcopy_release_pt(); 3589e3d6f909SAndy Grover release_se_kmem_caches(); 3590c66ac9dbSNicholas Bellinger } 3591c66ac9dbSNicholas Bellinger 3592c66ac9dbSNicholas Bellinger MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3593c66ac9dbSNicholas Bellinger MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3594c66ac9dbSNicholas Bellinger MODULE_LICENSE("GPL"); 3595c66ac9dbSNicholas Bellinger 3596c66ac9dbSNicholas Bellinger module_init(target_core_init_configfs); 3597c66ac9dbSNicholas Bellinger module_exit(target_core_exit_configfs); 3598